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v5.14.15
   1#!/usr/bin/env perl
   2# SPDX-License-Identifier: GPL-2.0
   3#
   4# (c) 2007, Joe Perches <joe@perches.com>
   5#           created from checkpatch.pl
   6#
   7# Print selected MAINTAINERS information for
   8# the files modified in a patch or for a file
   9#
  10# usage: perl scripts/get_maintainer.pl [OPTIONS] <patch>
  11#        perl scripts/get_maintainer.pl [OPTIONS] -f <file>
  12
  13use warnings;
  14use strict;
  15
  16my $P = $0;
  17my $V = '0.26';
  18
  19use Getopt::Long qw(:config no_auto_abbrev);
  20use Cwd;
  21use File::Find;
  22use File::Spec::Functions;
 
  23
  24my $cur_path = fastgetcwd() . '/';
  25my $lk_path = "./";
  26my $email = 1;
  27my $email_usename = 1;
  28my $email_maintainer = 1;
  29my $email_reviewer = 1;
  30my $email_fixes = 1;
  31my $email_list = 1;
  32my $email_moderated_list = 1;
  33my $email_subscriber_list = 0;
  34my $email_git_penguin_chiefs = 0;
  35my $email_git = 0;
  36my $email_git_all_signature_types = 0;
  37my $email_git_blame = 0;
  38my $email_git_blame_signatures = 1;
  39my $email_git_fallback = 1;
  40my $email_git_min_signatures = 1;
  41my $email_git_max_maintainers = 5;
  42my $email_git_min_percent = 5;
  43my $email_git_since = "1-year-ago";
  44my $email_hg_since = "-365";
  45my $interactive = 0;
  46my $email_remove_duplicates = 1;
  47my $email_use_mailmap = 1;
  48my $output_multiline = 1;
  49my $output_separator = ", ";
  50my $output_roles = 0;
  51my $output_rolestats = 1;
  52my $output_section_maxlen = 50;
  53my $scm = 0;
  54my $tree = 1;
  55my $web = 0;
 
  56my $subsystem = 0;
  57my $status = 0;
  58my $letters = "";
  59my $keywords = 1;
 
  60my $sections = 0;
  61my $email_file_emails = 0;
  62my $from_filename = 0;
  63my $pattern_depth = 0;
  64my $self_test = undef;
  65my $version = 0;
  66my $help = 0;
  67my $find_maintainer_files = 0;
  68my $maintainer_path;
  69my $vcs_used = 0;
  70
  71my $exit = 0;
  72
  73my @files = ();
  74my @fixes = ();			# If a patch description includes Fixes: lines
  75my @range = ();
  76my @keyword_tvi = ();
  77my @file_emails = ();
  78
  79my %commit_author_hash;
  80my %commit_signer_hash;
  81
  82my @penguin_chief = ();
  83push(@penguin_chief, "Linus Torvalds:torvalds\@linux-foundation.org");
  84#Andrew wants in on most everything - 2009/01/14
  85#push(@penguin_chief, "Andrew Morton:akpm\@linux-foundation.org");
  86
  87my @penguin_chief_names = ();
  88foreach my $chief (@penguin_chief) {
  89    if ($chief =~ m/^(.*):(.*)/) {
  90	my $chief_name = $1;
  91	my $chief_addr = $2;
  92	push(@penguin_chief_names, $chief_name);
  93    }
  94}
  95my $penguin_chiefs = "\(" . join("|", @penguin_chief_names) . "\)";
  96
  97# Signature types of people who are either
  98# 	a) responsible for the code in question, or
  99# 	b) familiar enough with it to give relevant feedback
 100my @signature_tags = ();
 101push(@signature_tags, "Signed-off-by:");
 102push(@signature_tags, "Reviewed-by:");
 103push(@signature_tags, "Acked-by:");
 104
 105my $signature_pattern = "\(" . join("|", @signature_tags) . "\)";
 106
 107# rfc822 email address - preloaded methods go here.
 108my $rfc822_lwsp = "(?:(?:\\r\\n)?[ \\t])";
 109my $rfc822_char = '[\\000-\\377]';
 110
 111# VCS command support: class-like functions and strings
 112
 113my %VCS_cmds;
 114
 115my %VCS_cmds_git = (
 116    "execute_cmd" => \&git_execute_cmd,
 117    "available" => '(which("git") ne "") && (-e ".git")',
 118    "find_signers_cmd" =>
 119	"git log --no-color --follow --since=\$email_git_since " .
 120	    '--numstat --no-merges ' .
 121	    '--format="GitCommit: %H%n' .
 122		      'GitAuthor: %an <%ae>%n' .
 123		      'GitDate: %aD%n' .
 124		      'GitSubject: %s%n' .
 125		      '%b%n"' .
 126	    " -- \$file",
 127    "find_commit_signers_cmd" =>
 128	"git log --no-color " .
 129	    '--numstat ' .
 130	    '--format="GitCommit: %H%n' .
 131		      'GitAuthor: %an <%ae>%n' .
 132		      'GitDate: %aD%n' .
 133		      'GitSubject: %s%n' .
 134		      '%b%n"' .
 135	    " -1 \$commit",
 136    "find_commit_author_cmd" =>
 137	"git log --no-color " .
 138	    '--numstat ' .
 139	    '--format="GitCommit: %H%n' .
 140		      'GitAuthor: %an <%ae>%n' .
 141		      'GitDate: %aD%n' .
 142		      'GitSubject: %s%n"' .
 143	    " -1 \$commit",
 144    "blame_range_cmd" => "git blame -l -L \$diff_start,+\$diff_length \$file",
 145    "blame_file_cmd" => "git blame -l \$file",
 146    "commit_pattern" => "^GitCommit: ([0-9a-f]{40,40})",
 147    "blame_commit_pattern" => "^([0-9a-f]+) ",
 148    "author_pattern" => "^GitAuthor: (.*)",
 149    "subject_pattern" => "^GitSubject: (.*)",
 150    "stat_pattern" => "^(\\d+)\\t(\\d+)\\t\$file\$",
 151    "file_exists_cmd" => "git ls-files \$file",
 152    "list_files_cmd" => "git ls-files \$file",
 153);
 154
 155my %VCS_cmds_hg = (
 156    "execute_cmd" => \&hg_execute_cmd,
 157    "available" => '(which("hg") ne "") && (-d ".hg")',
 158    "find_signers_cmd" =>
 159	"hg log --date=\$email_hg_since " .
 160	    "--template='HgCommit: {node}\\n" .
 161	                "HgAuthor: {author}\\n" .
 162			"HgSubject: {desc}\\n'" .
 163	    " -- \$file",
 164    "find_commit_signers_cmd" =>
 165	"hg log " .
 166	    "--template='HgSubject: {desc}\\n'" .
 167	    " -r \$commit",
 168    "find_commit_author_cmd" =>
 169	"hg log " .
 170	    "--template='HgCommit: {node}\\n" .
 171		        "HgAuthor: {author}\\n" .
 172			"HgSubject: {desc|firstline}\\n'" .
 173	    " -r \$commit",
 174    "blame_range_cmd" => "",		# not supported
 175    "blame_file_cmd" => "hg blame -n \$file",
 176    "commit_pattern" => "^HgCommit: ([0-9a-f]{40,40})",
 177    "blame_commit_pattern" => "^([ 0-9a-f]+):",
 178    "author_pattern" => "^HgAuthor: (.*)",
 179    "subject_pattern" => "^HgSubject: (.*)",
 180    "stat_pattern" => "^(\\d+)\t(\\d+)\t\$file\$",
 181    "file_exists_cmd" => "hg files \$file",
 182    "list_files_cmd" => "hg manifest -R \$file",
 183);
 184
 185my $conf = which_conf(".get_maintainer.conf");
 186if (-f $conf) {
 187    my @conf_args;
 188    open(my $conffile, '<', "$conf")
 189	or warn "$P: Can't find a readable .get_maintainer.conf file $!\n";
 190
 191    while (<$conffile>) {
 192	my $line = $_;
 193
 194	$line =~ s/\s*\n?$//g;
 195	$line =~ s/^\s*//g;
 196	$line =~ s/\s+/ /g;
 197
 198	next if ($line =~ m/^\s*#/);
 199	next if ($line =~ m/^\s*$/);
 200
 201	my @words = split(" ", $line);
 202	foreach my $word (@words) {
 203	    last if ($word =~ m/^#/);
 204	    push (@conf_args, $word);
 205	}
 206    }
 207    close($conffile);
 208    unshift(@ARGV, @conf_args) if @conf_args;
 209}
 210
 211my @ignore_emails = ();
 212my $ignore_file = which_conf(".get_maintainer.ignore");
 213if (-f $ignore_file) {
 214    open(my $ignore, '<', "$ignore_file")
 215	or warn "$P: Can't find a readable .get_maintainer.ignore file $!\n";
 216    while (<$ignore>) {
 217	my $line = $_;
 218
 219	$line =~ s/\s*\n?$//;
 220	$line =~ s/^\s*//;
 221	$line =~ s/\s+$//;
 222	$line =~ s/#.*$//;
 223
 224	next if ($line =~ m/^\s*$/);
 225	if (rfc822_valid($line)) {
 226	    push(@ignore_emails, $line);
 227	}
 228    }
 229    close($ignore);
 230}
 231
 232if ($#ARGV > 0) {
 233    foreach (@ARGV) {
 234        if ($_ =~ /^-{1,2}self-test(?:=|$)/) {
 235            die "$P: using --self-test does not allow any other option or argument\n";
 236        }
 237    }
 238}
 239
 240if (!GetOptions(
 241		'email!' => \$email,
 242		'git!' => \$email_git,
 243		'git-all-signature-types!' => \$email_git_all_signature_types,
 244		'git-blame!' => \$email_git_blame,
 245		'git-blame-signatures!' => \$email_git_blame_signatures,
 246		'git-fallback!' => \$email_git_fallback,
 247		'git-chief-penguins!' => \$email_git_penguin_chiefs,
 248		'git-min-signatures=i' => \$email_git_min_signatures,
 249		'git-max-maintainers=i' => \$email_git_max_maintainers,
 250		'git-min-percent=i' => \$email_git_min_percent,
 251		'git-since=s' => \$email_git_since,
 252		'hg-since=s' => \$email_hg_since,
 253		'i|interactive!' => \$interactive,
 254		'remove-duplicates!' => \$email_remove_duplicates,
 255		'mailmap!' => \$email_use_mailmap,
 256		'm!' => \$email_maintainer,
 257		'r!' => \$email_reviewer,
 258		'n!' => \$email_usename,
 259		'l!' => \$email_list,
 260		'fixes!' => \$email_fixes,
 261		'moderated!' => \$email_moderated_list,
 262		's!' => \$email_subscriber_list,
 263		'multiline!' => \$output_multiline,
 264		'roles!' => \$output_roles,
 265		'rolestats!' => \$output_rolestats,
 266		'separator=s' => \$output_separator,
 267		'subsystem!' => \$subsystem,
 268		'status!' => \$status,
 269		'scm!' => \$scm,
 270		'tree!' => \$tree,
 271		'web!' => \$web,
 
 272		'letters=s' => \$letters,
 273		'pattern-depth=i' => \$pattern_depth,
 274		'k|keywords!' => \$keywords,
 
 275		'sections!' => \$sections,
 276		'fe|file-emails!' => \$email_file_emails,
 277		'f|file' => \$from_filename,
 278		'find-maintainer-files' => \$find_maintainer_files,
 279		'mpath|maintainer-path=s' => \$maintainer_path,
 280		'self-test:s' => \$self_test,
 281		'v|version' => \$version,
 282		'h|help|usage' => \$help,
 283		)) {
 284    die "$P: invalid argument - use --help if necessary\n";
 285}
 286
 287if ($help != 0) {
 288    usage();
 289    exit 0;
 290}
 291
 292if ($version != 0) {
 293    print("${P} ${V}\n");
 294    exit 0;
 295}
 296
 297if (defined $self_test) {
 298    read_all_maintainer_files();
 299    self_test();
 300    exit 0;
 301}
 302
 303if (-t STDIN && !@ARGV) {
 304    # We're talking to a terminal, but have no command line arguments.
 305    die "$P: missing patchfile or -f file - use --help if necessary\n";
 306}
 307
 308$output_multiline = 0 if ($output_separator ne ", ");
 309$output_rolestats = 1 if ($interactive);
 310$output_roles = 1 if ($output_rolestats);
 311
 312if ($sections || $letters ne "") {
 313    $sections = 1;
 314    $email = 0;
 315    $email_list = 0;
 316    $scm = 0;
 317    $status = 0;
 318    $subsystem = 0;
 319    $web = 0;
 
 320    $keywords = 0;
 
 321    $interactive = 0;
 322} else {
 323    my $selections = $email + $scm + $status + $subsystem + $web;
 324    if ($selections == 0) {
 325	die "$P:  Missing required option: email, scm, status, subsystem or web\n";
 326    }
 327}
 328
 329if ($email &&
 330    ($email_maintainer + $email_reviewer +
 331     $email_list + $email_subscriber_list +
 332     $email_git + $email_git_penguin_chiefs + $email_git_blame) == 0) {
 333    die "$P: Please select at least 1 email option\n";
 334}
 335
 336if ($tree && !top_of_kernel_tree($lk_path)) {
 337    die "$P: The current directory does not appear to be "
 338	. "a linux kernel source tree.\n";
 339}
 340
 341## Read MAINTAINERS for type/value pairs
 342
 343my @typevalue = ();
 344my %keyword_hash;
 345my @mfiles = ();
 346my @self_test_info = ();
 347
 348sub read_maintainer_file {
 349    my ($file) = @_;
 350
 351    open (my $maint, '<', "$file")
 352	or die "$P: Can't open MAINTAINERS file '$file': $!\n";
 353    my $i = 1;
 354    while (<$maint>) {
 355	my $line = $_;
 356	chomp $line;
 357
 358	if ($line =~ m/^([A-Z]):\s*(.*)/) {
 359	    my $type = $1;
 360	    my $value = $2;
 361
 362	    ##Filename pattern matching
 363	    if ($type eq "F" || $type eq "X") {
 364		$value =~ s@\.@\\\.@g;       ##Convert . to \.
 365		$value =~ s/\*/\.\*/g;       ##Convert * to .*
 366		$value =~ s/\?/\./g;         ##Convert ? to .
 367		##if pattern is a directory and it lacks a trailing slash, add one
 368		if ((-d $value)) {
 369		    $value =~ s@([^/])$@$1/@;
 370		}
 371	    } elsif ($type eq "K") {
 372		$keyword_hash{@typevalue} = $value;
 373	    }
 374	    push(@typevalue, "$type:$value");
 375	} elsif (!(/^\s*$/ || /^\s*\#/)) {
 376	    push(@typevalue, $line);
 377	}
 378	if (defined $self_test) {
 379	    push(@self_test_info, {file=>$file, linenr=>$i, line=>$line});
 380	}
 381	$i++;
 382    }
 383    close($maint);
 384}
 385
 386sub find_is_maintainer_file {
 387    my ($file) = $_;
 388    return if ($file !~ m@/MAINTAINERS$@);
 389    $file = $File::Find::name;
 390    return if (! -f $file);
 391    push(@mfiles, $file);
 392}
 393
 394sub find_ignore_git {
 395    return grep { $_ !~ /^\.git$/; } @_;
 396}
 397
 398read_all_maintainer_files();
 399
 400sub read_all_maintainer_files {
 401    my $path = "${lk_path}MAINTAINERS";
 402    if (defined $maintainer_path) {
 403	$path = $maintainer_path;
 404	# Perl Cookbook tilde expansion if necessary
 405	$path =~ s@^~([^/]*)@ $1 ? (getpwnam($1))[7] : ( $ENV{HOME} || $ENV{LOGDIR} || (getpwuid($<))[7])@ex;
 406    }
 407
 408    if (-d $path) {
 409	$path .= '/' if ($path !~ m@/$@);
 410	if ($find_maintainer_files) {
 411	    find( { wanted => \&find_is_maintainer_file,
 412		    preprocess => \&find_ignore_git,
 413		    no_chdir => 1,
 414		}, "$path");
 415	} else {
 416	    opendir(DIR, "$path") or die $!;
 417	    my @files = readdir(DIR);
 418	    closedir(DIR);
 419	    foreach my $file (@files) {
 420		push(@mfiles, "$path$file") if ($file !~ /^\./);
 421	    }
 422	}
 423    } elsif (-f "$path") {
 424	push(@mfiles, "$path");
 425    } else {
 426	die "$P: MAINTAINER file not found '$path'\n";
 427    }
 428    die "$P: No MAINTAINER files found in '$path'\n" if (scalar(@mfiles) == 0);
 429    foreach my $file (@mfiles) {
 430	read_maintainer_file("$file");
 431    }
 432}
 433
 434sub maintainers_in_file {
 435    my ($file) = @_;
 436
 437    return if ($file =~ m@\bMAINTAINERS$@);
 438
 439    if (-f $file && ($email_file_emails || $file =~ /\.yaml$/)) {
 440	open(my $f, '<', $file)
 441	    or die "$P: Can't open $file: $!\n";
 442	my $text = do { local($/) ; <$f> };
 443	close($f);
 444
 445	my @poss_addr = $text =~ m$[A-Za-zÀ-ÿ\"\' \,\.\+-]*\s*[\,]*\s*[\(\<\{]{0,1}[A-Za-z0-9_\.\+-]+\@[A-Za-z0-9\.-]+\.[A-Za-z0-9]+[\)\>\}]{0,1}$g;
 446	push(@file_emails, clean_file_emails(@poss_addr));
 447    }
 448}
 449
 450#
 451# Read mail address map
 452#
 453
 454my $mailmap;
 455
 456read_mailmap();
 457
 458sub read_mailmap {
 459    $mailmap = {
 460	names => {},
 461	addresses => {}
 462    };
 463
 464    return if (!$email_use_mailmap || !(-f "${lk_path}.mailmap"));
 465
 466    open(my $mailmap_file, '<', "${lk_path}.mailmap")
 467	or warn "$P: Can't open .mailmap: $!\n";
 468
 469    while (<$mailmap_file>) {
 470	s/#.*$//; #strip comments
 471	s/^\s+|\s+$//g; #trim
 472
 473	next if (/^\s*$/); #skip empty lines
 474	#entries have one of the following formats:
 475	# name1 <mail1>
 476	# <mail1> <mail2>
 477	# name1 <mail1> <mail2>
 478	# name1 <mail1> name2 <mail2>
 479	# (see man git-shortlog)
 480
 481	if (/^([^<]+)<([^>]+)>$/) {
 482	    my $real_name = $1;
 483	    my $address = $2;
 484
 485	    $real_name =~ s/\s+$//;
 486	    ($real_name, $address) = parse_email("$real_name <$address>");
 487	    $mailmap->{names}->{$address} = $real_name;
 488
 489	} elsif (/^<([^>]+)>\s*<([^>]+)>$/) {
 490	    my $real_address = $1;
 491	    my $wrong_address = $2;
 492
 493	    $mailmap->{addresses}->{$wrong_address} = $real_address;
 494
 495	} elsif (/^(.+)<([^>]+)>\s*<([^>]+)>$/) {
 496	    my $real_name = $1;
 497	    my $real_address = $2;
 498	    my $wrong_address = $3;
 499
 500	    $real_name =~ s/\s+$//;
 501	    ($real_name, $real_address) =
 502		parse_email("$real_name <$real_address>");
 503	    $mailmap->{names}->{$wrong_address} = $real_name;
 504	    $mailmap->{addresses}->{$wrong_address} = $real_address;
 505
 506	} elsif (/^(.+)<([^>]+)>\s*(.+)\s*<([^>]+)>$/) {
 507	    my $real_name = $1;
 508	    my $real_address = $2;
 509	    my $wrong_name = $3;
 510	    my $wrong_address = $4;
 511
 512	    $real_name =~ s/\s+$//;
 513	    ($real_name, $real_address) =
 514		parse_email("$real_name <$real_address>");
 515
 516	    $wrong_name =~ s/\s+$//;
 517	    ($wrong_name, $wrong_address) =
 518		parse_email("$wrong_name <$wrong_address>");
 519
 520	    my $wrong_email = format_email($wrong_name, $wrong_address, 1);
 521	    $mailmap->{names}->{$wrong_email} = $real_name;
 522	    $mailmap->{addresses}->{$wrong_email} = $real_address;
 523	}
 524    }
 525    close($mailmap_file);
 526}
 527
 528## use the filenames on the command line or find the filenames in the patchfiles
 529
 530if (!@ARGV) {
 531    push(@ARGV, "&STDIN");
 532}
 533
 534foreach my $file (@ARGV) {
 535    if ($file ne "&STDIN") {
 536	$file = canonpath($file);
 537	##if $file is a directory and it lacks a trailing slash, add one
 538	if ((-d $file)) {
 539	    $file =~ s@([^/])$@$1/@;
 540	} elsif (!(-f $file)) {
 541	    die "$P: file '${file}' not found\n";
 542	}
 543    }
 544    if ($from_filename && (vcs_exists() && !vcs_file_exists($file))) {
 545	warn "$P: file '$file' not found in version control $!\n";
 546    }
 547    if ($from_filename || ($file ne "&STDIN" && vcs_file_exists($file))) {
 548	$file =~ s/^\Q${cur_path}\E//;	#strip any absolute path
 549	$file =~ s/^\Q${lk_path}\E//;	#or the path to the lk tree
 550	push(@files, $file);
 551	if ($file ne "MAINTAINERS" && -f $file && $keywords) {
 552	    open(my $f, '<', $file)
 553		or die "$P: Can't open $file: $!\n";
 554	    my $text = do { local($/) ; <$f> };
 555	    close($f);
 556	    if ($keywords) {
 557		foreach my $line (keys %keyword_hash) {
 558		    if ($text =~ m/$keyword_hash{$line}/x) {
 559			push(@keyword_tvi, $line);
 560		    }
 561		}
 562	    }
 563	}
 564    } else {
 565	my $file_cnt = @files;
 566	my $lastfile;
 567
 568	open(my $patch, "< $file")
 569	    or die "$P: Can't open $file: $!\n";
 570
 571	# We can check arbitrary information before the patch
 572	# like the commit message, mail headers, etc...
 573	# This allows us to match arbitrary keywords against any part
 574	# of a git format-patch generated file (subject tags, etc...)
 575
 576	my $patch_prefix = "";			#Parsing the intro
 577
 578	while (<$patch>) {
 579	    my $patch_line = $_;
 580	    if (m/^ mode change [0-7]+ => [0-7]+ (\S+)\s*$/) {
 581		my $filename = $1;
 582		push(@files, $filename);
 583	    } elsif (m/^rename (?:from|to) (\S+)\s*$/) {
 584		my $filename = $1;
 585		push(@files, $filename);
 586	    } elsif (m/^diff --git a\/(\S+) b\/(\S+)\s*$/) {
 587		my $filename1 = $1;
 588		my $filename2 = $2;
 589		push(@files, $filename1);
 590		push(@files, $filename2);
 591	    } elsif (m/^Fixes:\s+([0-9a-fA-F]{6,40})/) {
 592		push(@fixes, $1) if ($email_fixes);
 593	    } elsif (m/^\+\+\+\s+(\S+)/ or m/^---\s+(\S+)/) {
 594		my $filename = $1;
 595		$filename =~ s@^[^/]*/@@;
 596		$filename =~ s@\n@@;
 597		$lastfile = $filename;
 598		push(@files, $filename);
 599		$patch_prefix = "^[+-].*";	#Now parsing the actual patch
 600	    } elsif (m/^\@\@ -(\d+),(\d+)/) {
 601		if ($email_git_blame) {
 602		    push(@range, "$lastfile:$1:$2");
 603		}
 604	    } elsif ($keywords) {
 605		foreach my $line (keys %keyword_hash) {
 606		    if ($patch_line =~ m/${patch_prefix}$keyword_hash{$line}/x) {
 607			push(@keyword_tvi, $line);
 608		    }
 609		}
 610	    }
 611	}
 612	close($patch);
 613
 614	if ($file_cnt == @files) {
 615	    warn "$P: file '${file}' doesn't appear to be a patch.  "
 616		. "Add -f to options?\n";
 617	}
 618	@files = sort_and_uniq(@files);
 619    }
 620}
 621
 622@file_emails = uniq(@file_emails);
 623@fixes = uniq(@fixes);
 624
 625my %email_hash_name;
 626my %email_hash_address;
 627my @email_to = ();
 628my %hash_list_to;
 629my @list_to = ();
 630my @scm = ();
 631my @web = ();
 
 632my @subsystem = ();
 633my @status = ();
 634my %deduplicate_name_hash = ();
 635my %deduplicate_address_hash = ();
 636
 637my @maintainers = get_maintainers();
 638if (@maintainers) {
 639    @maintainers = merge_email(@maintainers);
 640    output(@maintainers);
 641}
 642
 643if ($scm) {
 644    @scm = uniq(@scm);
 645    output(@scm);
 646}
 647
 648if ($status) {
 649    @status = uniq(@status);
 650    output(@status);
 651}
 652
 653if ($subsystem) {
 654    @subsystem = uniq(@subsystem);
 655    output(@subsystem);
 656}
 657
 658if ($web) {
 659    @web = uniq(@web);
 660    output(@web);
 661}
 662
 
 
 
 
 
 663exit($exit);
 664
 665sub self_test {
 666    my @lsfiles = ();
 667    my @good_links = ();
 668    my @bad_links = ();
 669    my @section_headers = ();
 670    my $index = 0;
 671
 672    @lsfiles = vcs_list_files($lk_path);
 673
 674    for my $x (@self_test_info) {
 675	$index++;
 676
 677	## Section header duplication and missing section content
 678	if (($self_test eq "" || $self_test =~ /\bsections\b/) &&
 679	    $x->{line} =~ /^\S[^:]/ &&
 680	    defined $self_test_info[$index] &&
 681	    $self_test_info[$index]->{line} =~ /^([A-Z]):\s*\S/) {
 682	    my $has_S = 0;
 683	    my $has_F = 0;
 684	    my $has_ML = 0;
 685	    my $status = "";
 686	    if (grep(m@^\Q$x->{line}\E@, @section_headers)) {
 687		print("$x->{file}:$x->{linenr}: warning: duplicate section header\t$x->{line}\n");
 688	    } else {
 689		push(@section_headers, $x->{line});
 690	    }
 691	    my $nextline = $index;
 692	    while (defined $self_test_info[$nextline] &&
 693		   $self_test_info[$nextline]->{line} =~ /^([A-Z]):\s*(\S.*)/) {
 694		my $type = $1;
 695		my $value = $2;
 696		if ($type eq "S") {
 697		    $has_S = 1;
 698		    $status = $value;
 699		} elsif ($type eq "F" || $type eq "N") {
 700		    $has_F = 1;
 701		} elsif ($type eq "M" || $type eq "R" || $type eq "L") {
 702		    $has_ML = 1;
 703		}
 704		$nextline++;
 705	    }
 706	    if (!$has_ML && $status !~ /orphan|obsolete/i) {
 707		print("$x->{file}:$x->{linenr}: warning: section without email address\t$x->{line}\n");
 708	    }
 709	    if (!$has_S) {
 710		print("$x->{file}:$x->{linenr}: warning: section without status \t$x->{line}\n");
 711	    }
 712	    if (!$has_F) {
 713		print("$x->{file}:$x->{linenr}: warning: section without file pattern\t$x->{line}\n");
 714	    }
 715	}
 716
 717	next if ($x->{line} !~ /^([A-Z]):\s*(.*)/);
 718
 719	my $type = $1;
 720	my $value = $2;
 721
 722	## Filename pattern matching
 723	if (($type eq "F" || $type eq "X") &&
 724	    ($self_test eq "" || $self_test =~ /\bpatterns\b/)) {
 725	    $value =~ s@\.@\\\.@g;       ##Convert . to \.
 726	    $value =~ s/\*/\.\*/g;       ##Convert * to .*
 727	    $value =~ s/\?/\./g;         ##Convert ? to .
 728	    ##if pattern is a directory and it lacks a trailing slash, add one
 729	    if ((-d $value)) {
 730		$value =~ s@([^/])$@$1/@;
 731	    }
 732	    if (!grep(m@^$value@, @lsfiles)) {
 733		print("$x->{file}:$x->{linenr}: warning: no file matches\t$x->{line}\n");
 734	    }
 735
 736	## Link reachability
 737	} elsif (($type eq "W" || $type eq "Q" || $type eq "B") &&
 738		 $value =~ /^https?:/ &&
 739		 ($self_test eq "" || $self_test =~ /\blinks\b/)) {
 740	    next if (grep(m@^\Q$value\E$@, @good_links));
 741	    my $isbad = 0;
 742	    if (grep(m@^\Q$value\E$@, @bad_links)) {
 743	        $isbad = 1;
 744	    } else {
 745		my $output = `wget --spider -q --no-check-certificate --timeout 10 --tries 1 $value`;
 746		if ($? == 0) {
 747		    push(@good_links, $value);
 748		} else {
 749		    push(@bad_links, $value);
 750		    $isbad = 1;
 751		}
 752	    }
 753	    if ($isbad) {
 754	        print("$x->{file}:$x->{linenr}: warning: possible bad link\t$x->{line}\n");
 755	    }
 756
 757	## SCM reachability
 758	} elsif ($type eq "T" &&
 759		 ($self_test eq "" || $self_test =~ /\bscm\b/)) {
 760	    next if (grep(m@^\Q$value\E$@, @good_links));
 761	    my $isbad = 0;
 762	    if (grep(m@^\Q$value\E$@, @bad_links)) {
 763	        $isbad = 1;
 764            } elsif ($value !~ /^(?:git|quilt|hg)\s+\S/) {
 765		print("$x->{file}:$x->{linenr}: warning: malformed entry\t$x->{line}\n");
 766	    } elsif ($value =~ /^git\s+(\S+)(\s+([^\(]+\S+))?/) {
 767		my $url = $1;
 768		my $branch = "";
 769		$branch = $3 if $3;
 770		my $output = `git ls-remote --exit-code -h "$url" $branch > /dev/null 2>&1`;
 771		if ($? == 0) {
 772		    push(@good_links, $value);
 773		} else {
 774		    push(@bad_links, $value);
 775		    $isbad = 1;
 776		}
 777	    } elsif ($value =~ /^(?:quilt|hg)\s+(https?:\S+)/) {
 778		my $url = $1;
 779		my $output = `wget --spider -q --no-check-certificate --timeout 10 --tries 1 $url`;
 780		if ($? == 0) {
 781		    push(@good_links, $value);
 782		} else {
 783		    push(@bad_links, $value);
 784		    $isbad = 1;
 785		}
 786	    }
 787	    if ($isbad) {
 788		print("$x->{file}:$x->{linenr}: warning: possible bad link\t$x->{line}\n");
 789	    }
 790	}
 791    }
 792}
 793
 794sub ignore_email_address {
 795    my ($address) = @_;
 796
 797    foreach my $ignore (@ignore_emails) {
 798	return 1 if ($ignore eq $address);
 799    }
 800
 801    return 0;
 802}
 803
 804sub range_is_maintained {
 805    my ($start, $end) = @_;
 806
 807    for (my $i = $start; $i < $end; $i++) {
 808	my $line = $typevalue[$i];
 809	if ($line =~ m/^([A-Z]):\s*(.*)/) {
 810	    my $type = $1;
 811	    my $value = $2;
 812	    if ($type eq 'S') {
 813		if ($value =~ /(maintain|support)/i) {
 814		    return 1;
 815		}
 816	    }
 817	}
 818    }
 819    return 0;
 820}
 821
 822sub range_has_maintainer {
 823    my ($start, $end) = @_;
 824
 825    for (my $i = $start; $i < $end; $i++) {
 826	my $line = $typevalue[$i];
 827	if ($line =~ m/^([A-Z]):\s*(.*)/) {
 828	    my $type = $1;
 829	    my $value = $2;
 830	    if ($type eq 'M') {
 831		return 1;
 832	    }
 833	}
 834    }
 835    return 0;
 836}
 837
 838sub get_maintainers {
 839    %email_hash_name = ();
 840    %email_hash_address = ();
 841    %commit_author_hash = ();
 842    %commit_signer_hash = ();
 843    @email_to = ();
 844    %hash_list_to = ();
 845    @list_to = ();
 846    @scm = ();
 847    @web = ();
 
 848    @subsystem = ();
 849    @status = ();
 850    %deduplicate_name_hash = ();
 851    %deduplicate_address_hash = ();
 852    if ($email_git_all_signature_types) {
 853	$signature_pattern = "(.+?)[Bb][Yy]:";
 854    } else {
 855	$signature_pattern = "\(" . join("|", @signature_tags) . "\)";
 856    }
 857
 858    # Find responsible parties
 859
 860    my %exact_pattern_match_hash = ();
 861
 862    foreach my $file (@files) {
 863
 864	my %hash;
 865	my $tvi = find_first_section();
 866	while ($tvi < @typevalue) {
 867	    my $start = find_starting_index($tvi);
 868	    my $end = find_ending_index($tvi);
 869	    my $exclude = 0;
 870	    my $i;
 871
 872	    #Do not match excluded file patterns
 873
 874	    for ($i = $start; $i < $end; $i++) {
 875		my $line = $typevalue[$i];
 876		if ($line =~ m/^([A-Z]):\s*(.*)/) {
 877		    my $type = $1;
 878		    my $value = $2;
 879		    if ($type eq 'X') {
 880			if (file_match_pattern($file, $value)) {
 881			    $exclude = 1;
 882			    last;
 883			}
 884		    }
 885		}
 886	    }
 887
 888	    if (!$exclude) {
 889		for ($i = $start; $i < $end; $i++) {
 890		    my $line = $typevalue[$i];
 891		    if ($line =~ m/^([A-Z]):\s*(.*)/) {
 892			my $type = $1;
 893			my $value = $2;
 894			if ($type eq 'F') {
 895			    if (file_match_pattern($file, $value)) {
 896				my $value_pd = ($value =~ tr@/@@);
 897				my $file_pd = ($file  =~ tr@/@@);
 898				$value_pd++ if (substr($value,-1,1) ne "/");
 899				$value_pd = -1 if ($value =~ /^\.\*/);
 900				if ($value_pd >= $file_pd &&
 901				    range_is_maintained($start, $end) &&
 902				    range_has_maintainer($start, $end)) {
 903				    $exact_pattern_match_hash{$file} = 1;
 904				}
 905				if ($pattern_depth == 0 ||
 906				    (($file_pd - $value_pd) < $pattern_depth)) {
 907				    $hash{$tvi} = $value_pd;
 908				}
 909			    }
 910			} elsif ($type eq 'N') {
 911			    if ($file =~ m/$value/x) {
 912				$hash{$tvi} = 0;
 913			    }
 914			}
 915		    }
 916		}
 917	    }
 918	    $tvi = $end + 1;
 919	}
 920
 921	foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {
 922	    add_categories($line);
 923	    if ($sections) {
 924		my $i;
 925		my $start = find_starting_index($line);
 926		my $end = find_ending_index($line);
 927		for ($i = $start; $i < $end; $i++) {
 928		    my $line = $typevalue[$i];
 929		    if ($line =~ /^[FX]:/) {		##Restore file patterns
 930			$line =~ s/([^\\])\.([^\*])/$1\?$2/g;
 931			$line =~ s/([^\\])\.$/$1\?/g;	##Convert . back to ?
 932			$line =~ s/\\\./\./g;       	##Convert \. to .
 933			$line =~ s/\.\*/\*/g;       	##Convert .* to *
 934		    }
 935		    my $count = $line =~ s/^([A-Z]):/$1:\t/g;
 936		    if ($letters eq "" || (!$count || $letters =~ /$1/i)) {
 937			print("$line\n");
 938		    }
 939		}
 940		print("\n");
 941	    }
 942	}
 943
 944	maintainers_in_file($file);
 945    }
 946
 947    if ($keywords) {
 948	@keyword_tvi = sort_and_uniq(@keyword_tvi);
 949	foreach my $line (@keyword_tvi) {
 950	    add_categories($line);
 951	}
 952    }
 953
 954    foreach my $email (@email_to, @list_to) {
 955	$email->[0] = deduplicate_email($email->[0]);
 956    }
 957
 958    foreach my $file (@files) {
 959	if ($email &&
 960	    ($email_git ||
 961	     ($email_git_fallback &&
 962	      $file !~ /MAINTAINERS$/ &&
 963	      !$exact_pattern_match_hash{$file}))) {
 964	    vcs_file_signoffs($file);
 965	}
 966	if ($email && $email_git_blame) {
 967	    vcs_file_blame($file);
 968	}
 969    }
 970
 971    if ($email) {
 972	foreach my $chief (@penguin_chief) {
 973	    if ($chief =~ m/^(.*):(.*)/) {
 974		my $email_address;
 975
 976		$email_address = format_email($1, $2, $email_usename);
 977		if ($email_git_penguin_chiefs) {
 978		    push(@email_to, [$email_address, 'chief penguin']);
 979		} else {
 980		    @email_to = grep($_->[0] !~ /${email_address}/, @email_to);
 981		}
 982	    }
 983	}
 984
 985	foreach my $email (@file_emails) {
 
 986	    my ($name, $address) = parse_email($email);
 987
 988	    my $tmp_email = format_email($name, $address, $email_usename);
 989	    push_email_address($tmp_email, '');
 990	    add_role($tmp_email, 'in file');
 991	}
 992    }
 993
 994    foreach my $fix (@fixes) {
 995	vcs_add_commit_signers($fix, "blamed_fixes");
 996    }
 997
 998    my @to = ();
 999    if ($email || $email_list) {
1000	if ($email) {
1001	    @to = (@to, @email_to);
1002	}
1003	if ($email_list) {
1004	    @to = (@to, @list_to);
1005	}
1006    }
1007
1008    if ($interactive) {
1009	@to = interactive_get_maintainers(\@to);
1010    }
1011
1012    return @to;
1013}
1014
1015sub file_match_pattern {
1016    my ($file, $pattern) = @_;
1017    if (substr($pattern, -1) eq "/") {
1018	if ($file =~ m@^$pattern@) {
1019	    return 1;
1020	}
1021    } else {
1022	if ($file =~ m@^$pattern@) {
1023	    my $s1 = ($file =~ tr@/@@);
1024	    my $s2 = ($pattern =~ tr@/@@);
1025	    if ($s1 == $s2) {
1026		return 1;
1027	    }
1028	}
1029    }
1030    return 0;
1031}
1032
1033sub usage {
1034    print <<EOT;
1035usage: $P [options] patchfile
1036       $P [options] -f file|directory
1037version: $V
1038
1039MAINTAINER field selection options:
1040  --email => print email address(es) if any
1041    --git => include recent git \*-by: signers
1042    --git-all-signature-types => include signers regardless of signature type
1043        or use only ${signature_pattern} signers (default: $email_git_all_signature_types)
1044    --git-fallback => use git when no exact MAINTAINERS pattern (default: $email_git_fallback)
1045    --git-chief-penguins => include ${penguin_chiefs}
1046    --git-min-signatures => number of signatures required (default: $email_git_min_signatures)
1047    --git-max-maintainers => maximum maintainers to add (default: $email_git_max_maintainers)
1048    --git-min-percent => minimum percentage of commits required (default: $email_git_min_percent)
1049    --git-blame => use git blame to find modified commits for patch or file
1050    --git-blame-signatures => when used with --git-blame, also include all commit signers
1051    --git-since => git history to use (default: $email_git_since)
1052    --hg-since => hg history to use (default: $email_hg_since)
1053    --interactive => display a menu (mostly useful if used with the --git option)
1054    --m => include maintainer(s) if any
1055    --r => include reviewer(s) if any
1056    --n => include name 'Full Name <addr\@domain.tld>'
1057    --l => include list(s) if any
1058    --moderated => include moderated lists(s) if any (default: true)
1059    --s => include subscriber only list(s) if any (default: false)
1060    --remove-duplicates => minimize duplicate email names/addresses
1061    --roles => show roles (status:subsystem, git-signer, list, etc...)
1062    --rolestats => show roles and statistics (commits/total_commits, %)
1063    --file-emails => add email addresses found in -f file (default: 0 (off))
1064    --fixes => for patches, add signatures of commits with 'Fixes: <commit>' (default: 1 (on))
1065  --scm => print SCM tree(s) if any
1066  --status => print status if any
1067  --subsystem => print subsystem name if any
1068  --web => print website(s) if any
 
1069
1070Output type options:
1071  --separator [, ] => separator for multiple entries on 1 line
1072    using --separator also sets --nomultiline if --separator is not [, ]
1073  --multiline => print 1 entry per line
1074
1075Other options:
1076  --pattern-depth => Number of pattern directory traversals (default: 0 (all))
1077  --keywords => scan patch for keywords (default: $keywords)
 
1078  --sections => print all of the subsystem sections with pattern matches
1079  --letters => print all matching 'letter' types from all matching sections
1080  --mailmap => use .mailmap file (default: $email_use_mailmap)
1081  --no-tree => run without a kernel tree
1082  --self-test => show potential issues with MAINTAINERS file content
1083  --version => show version
1084  --help => show this help information
1085
1086Default options:
1087  [--email --tree --nogit --git-fallback --m --r --n --l --multiline
1088   --pattern-depth=0 --remove-duplicates --rolestats]
1089
1090Notes:
1091  Using "-f directory" may give unexpected results:
1092      Used with "--git", git signators for _all_ files in and below
1093          directory are examined as git recurses directories.
1094          Any specified X: (exclude) pattern matches are _not_ ignored.
1095      Used with "--nogit", directory is used as a pattern match,
1096          no individual file within the directory or subdirectory
1097          is matched.
1098      Used with "--git-blame", does not iterate all files in directory
1099  Using "--git-blame" is slow and may add old committers and authors
1100      that are no longer active maintainers to the output.
1101  Using "--roles" or "--rolestats" with git send-email --cc-cmd or any
1102      other automated tools that expect only ["name"] <email address>
1103      may not work because of additional output after <email address>.
1104  Using "--rolestats" and "--git-blame" shows the #/total=% commits,
1105      not the percentage of the entire file authored.  # of commits is
1106      not a good measure of amount of code authored.  1 major commit may
1107      contain a thousand lines, 5 trivial commits may modify a single line.
1108  If git is not installed, but mercurial (hg) is installed and an .hg
1109      repository exists, the following options apply to mercurial:
1110          --git,
1111          --git-min-signatures, --git-max-maintainers, --git-min-percent, and
1112          --git-blame
1113      Use --hg-since not --git-since to control date selection
1114  File ".get_maintainer.conf", if it exists in the linux kernel source root
1115      directory, can change whatever get_maintainer defaults are desired.
1116      Entries in this file can be any command line argument.
1117      This file is prepended to any additional command line arguments.
1118      Multiple lines and # comments are allowed.
1119  Most options have both positive and negative forms.
1120      The negative forms for --<foo> are --no<foo> and --no-<foo>.
1121
1122EOT
1123}
1124
1125sub top_of_kernel_tree {
1126    my ($lk_path) = @_;
1127
1128    if ($lk_path ne "" && substr($lk_path,length($lk_path)-1,1) ne "/") {
1129	$lk_path .= "/";
1130    }
1131    if (   (-f "${lk_path}COPYING")
1132	&& (-f "${lk_path}CREDITS")
1133	&& (-f "${lk_path}Kbuild")
1134	&& (-e "${lk_path}MAINTAINERS")
1135	&& (-f "${lk_path}Makefile")
1136	&& (-f "${lk_path}README")
1137	&& (-d "${lk_path}Documentation")
1138	&& (-d "${lk_path}arch")
1139	&& (-d "${lk_path}include")
1140	&& (-d "${lk_path}drivers")
1141	&& (-d "${lk_path}fs")
1142	&& (-d "${lk_path}init")
1143	&& (-d "${lk_path}ipc")
1144	&& (-d "${lk_path}kernel")
1145	&& (-d "${lk_path}lib")
1146	&& (-d "${lk_path}scripts")) {
1147	return 1;
1148    }
1149    return 0;
1150}
1151
 
 
 
 
 
 
 
 
 
 
 
1152sub parse_email {
1153    my ($formatted_email) = @_;
1154
1155    my $name = "";
1156    my $address = "";
1157
1158    if ($formatted_email =~ /^([^<]+)<(.+\@.*)>.*$/) {
1159	$name = $1;
1160	$address = $2;
1161    } elsif ($formatted_email =~ /^\s*<(.+\@\S*)>.*$/) {
1162	$address = $1;
1163    } elsif ($formatted_email =~ /^(.+\@\S*).*$/) {
1164	$address = $1;
1165    }
1166
1167    $name =~ s/^\s+|\s+$//g;
1168    $name =~ s/^\"|\"$//g;
 
1169    $address =~ s/^\s+|\s+$//g;
1170
1171    if ($name =~ /[^\w \-]/i) {  	 ##has "must quote" chars
1172	$name =~ s/(?<!\\)"/\\"/g;       ##escape quotes
1173	$name = "\"$name\"";
1174    }
1175
1176    return ($name, $address);
1177}
1178
1179sub format_email {
1180    my ($name, $address, $usename) = @_;
1181
1182    my $formatted_email;
1183
1184    $name =~ s/^\s+|\s+$//g;
1185    $name =~ s/^\"|\"$//g;
 
1186    $address =~ s/^\s+|\s+$//g;
1187
1188    if ($name =~ /[^\w \-]/i) {          ##has "must quote" chars
1189	$name =~ s/(?<!\\)"/\\"/g;       ##escape quotes
1190	$name = "\"$name\"";
1191    }
1192
1193    if ($usename) {
1194	if ("$name" eq "") {
1195	    $formatted_email = "$address";
1196	} else {
1197	    $formatted_email = "$name <$address>";
1198	}
1199    } else {
1200	$formatted_email = $address;
1201    }
1202
1203    return $formatted_email;
1204}
1205
1206sub find_first_section {
1207    my $index = 0;
1208
1209    while ($index < @typevalue) {
1210	my $tv = $typevalue[$index];
1211	if (($tv =~ m/^([A-Z]):\s*(.*)/)) {
1212	    last;
1213	}
1214	$index++;
1215    }
1216
1217    return $index;
1218}
1219
1220sub find_starting_index {
1221    my ($index) = @_;
1222
1223    while ($index > 0) {
1224	my $tv = $typevalue[$index];
1225	if (!($tv =~ m/^([A-Z]):\s*(.*)/)) {
1226	    last;
1227	}
1228	$index--;
1229    }
1230
1231    return $index;
1232}
1233
1234sub find_ending_index {
1235    my ($index) = @_;
1236
1237    while ($index < @typevalue) {
1238	my $tv = $typevalue[$index];
1239	if (!($tv =~ m/^([A-Z]):\s*(.*)/)) {
1240	    last;
1241	}
1242	$index++;
1243    }
1244
1245    return $index;
1246}
1247
1248sub get_subsystem_name {
1249    my ($index) = @_;
1250
1251    my $start = find_starting_index($index);
1252
1253    my $subsystem = $typevalue[$start];
1254    if ($output_section_maxlen && length($subsystem) > $output_section_maxlen) {
1255	$subsystem = substr($subsystem, 0, $output_section_maxlen - 3);
1256	$subsystem =~ s/\s*$//;
1257	$subsystem = $subsystem . "...";
1258    }
1259    return $subsystem;
1260}
1261
1262sub get_maintainer_role {
1263    my ($index) = @_;
1264
1265    my $i;
1266    my $start = find_starting_index($index);
1267    my $end = find_ending_index($index);
1268
1269    my $role = "unknown";
1270    my $subsystem = get_subsystem_name($index);
1271
1272    for ($i = $start + 1; $i < $end; $i++) {
1273	my $tv = $typevalue[$i];
1274	if ($tv =~ m/^([A-Z]):\s*(.*)/) {
1275	    my $ptype = $1;
1276	    my $pvalue = $2;
1277	    if ($ptype eq "S") {
1278		$role = $pvalue;
1279	    }
1280	}
1281    }
1282
1283    $role = lc($role);
1284    if      ($role eq "supported") {
1285	$role = "supporter";
1286    } elsif ($role eq "maintained") {
1287	$role = "maintainer";
1288    } elsif ($role eq "odd fixes") {
1289	$role = "odd fixer";
1290    } elsif ($role eq "orphan") {
1291	$role = "orphan minder";
1292    } elsif ($role eq "obsolete") {
1293	$role = "obsolete minder";
1294    } elsif ($role eq "buried alive in reporters") {
1295	$role = "chief penguin";
1296    }
1297
1298    return $role . ":" . $subsystem;
1299}
1300
1301sub get_list_role {
1302    my ($index) = @_;
1303
1304    my $subsystem = get_subsystem_name($index);
1305
1306    if ($subsystem eq "THE REST") {
1307	$subsystem = "";
1308    }
1309
1310    return $subsystem;
1311}
1312
1313sub add_categories {
1314    my ($index) = @_;
1315
1316    my $i;
1317    my $start = find_starting_index($index);
1318    my $end = find_ending_index($index);
1319
1320    push(@subsystem, $typevalue[$start]);
1321
1322    for ($i = $start + 1; $i < $end; $i++) {
1323	my $tv = $typevalue[$i];
1324	if ($tv =~ m/^([A-Z]):\s*(.*)/) {
1325	    my $ptype = $1;
1326	    my $pvalue = $2;
1327	    if ($ptype eq "L") {
1328		my $list_address = $pvalue;
1329		my $list_additional = "";
1330		my $list_role = get_list_role($i);
1331
1332		if ($list_role ne "") {
1333		    $list_role = ":" . $list_role;
1334		}
1335		if ($list_address =~ m/([^\s]+)\s+(.*)$/) {
1336		    $list_address = $1;
1337		    $list_additional = $2;
1338		}
1339		if ($list_additional =~ m/subscribers-only/) {
1340		    if ($email_subscriber_list) {
1341			if (!$hash_list_to{lc($list_address)}) {
1342			    $hash_list_to{lc($list_address)} = 1;
1343			    push(@list_to, [$list_address,
1344					    "subscriber list${list_role}"]);
1345			}
1346		    }
1347		} else {
1348		    if ($email_list) {
1349			if (!$hash_list_to{lc($list_address)}) {
1350			    if ($list_additional =~ m/moderated/) {
1351				if ($email_moderated_list) {
1352				    $hash_list_to{lc($list_address)} = 1;
1353				    push(@list_to, [$list_address,
1354						    "moderated list${list_role}"]);
1355				}
1356			    } else {
1357				$hash_list_to{lc($list_address)} = 1;
1358				push(@list_to, [$list_address,
1359						"open list${list_role}"]);
1360			    }
1361			}
1362		    }
1363		}
1364	    } elsif ($ptype eq "M") {
1365		if ($email_maintainer) {
1366		    my $role = get_maintainer_role($i);
1367		    push_email_addresses($pvalue, $role);
1368		}
1369	    } elsif ($ptype eq "R") {
1370		if ($email_reviewer) {
1371		    my $subsystem = get_subsystem_name($i);
1372		    push_email_addresses($pvalue, "reviewer:$subsystem");
1373		}
1374	    } elsif ($ptype eq "T") {
1375		push(@scm, $pvalue);
1376	    } elsif ($ptype eq "W") {
1377		push(@web, $pvalue);
 
 
1378	    } elsif ($ptype eq "S") {
1379		push(@status, $pvalue);
1380	    }
1381	}
1382    }
1383}
1384
1385sub email_inuse {
1386    my ($name, $address) = @_;
1387
1388    return 1 if (($name eq "") && ($address eq ""));
1389    return 1 if (($name ne "") && exists($email_hash_name{lc($name)}));
1390    return 1 if (($address ne "") && exists($email_hash_address{lc($address)}));
1391
1392    return 0;
1393}
1394
1395sub push_email_address {
1396    my ($line, $role) = @_;
1397
1398    my ($name, $address) = parse_email($line);
1399
1400    if ($address eq "") {
1401	return 0;
1402    }
1403
1404    if (!$email_remove_duplicates) {
1405	push(@email_to, [format_email($name, $address, $email_usename), $role]);
1406    } elsif (!email_inuse($name, $address)) {
1407	push(@email_to, [format_email($name, $address, $email_usename), $role]);
1408	$email_hash_name{lc($name)}++ if ($name ne "");
1409	$email_hash_address{lc($address)}++;
1410    }
1411
1412    return 1;
1413}
1414
1415sub push_email_addresses {
1416    my ($address, $role) = @_;
1417
1418    my @address_list = ();
1419
1420    if (rfc822_valid($address)) {
1421	push_email_address($address, $role);
1422    } elsif (@address_list = rfc822_validlist($address)) {
1423	my $array_count = shift(@address_list);
1424	while (my $entry = shift(@address_list)) {
1425	    push_email_address($entry, $role);
1426	}
1427    } else {
1428	if (!push_email_address($address, $role)) {
1429	    warn("Invalid MAINTAINERS address: '" . $address . "'\n");
1430	}
1431    }
1432}
1433
1434sub add_role {
1435    my ($line, $role) = @_;
1436
1437    my ($name, $address) = parse_email($line);
1438    my $email = format_email($name, $address, $email_usename);
1439
1440    foreach my $entry (@email_to) {
1441	if ($email_remove_duplicates) {
1442	    my ($entry_name, $entry_address) = parse_email($entry->[0]);
1443	    if (($name eq $entry_name || $address eq $entry_address)
1444		&& ($role eq "" || !($entry->[1] =~ m/$role/))
1445	    ) {
1446		if ($entry->[1] eq "") {
1447		    $entry->[1] = "$role";
1448		} else {
1449		    $entry->[1] = "$entry->[1],$role";
1450		}
1451	    }
1452	} else {
1453	    if ($email eq $entry->[0]
1454		&& ($role eq "" || !($entry->[1] =~ m/$role/))
1455	    ) {
1456		if ($entry->[1] eq "") {
1457		    $entry->[1] = "$role";
1458		} else {
1459		    $entry->[1] = "$entry->[1],$role";
1460		}
1461	    }
1462	}
1463    }
1464}
1465
1466sub which {
1467    my ($bin) = @_;
1468
1469    foreach my $path (split(/:/, $ENV{PATH})) {
1470	if (-e "$path/$bin") {
1471	    return "$path/$bin";
1472	}
1473    }
1474
1475    return "";
1476}
1477
1478sub which_conf {
1479    my ($conf) = @_;
1480
1481    foreach my $path (split(/:/, ".:$ENV{HOME}:.scripts")) {
1482	if (-e "$path/$conf") {
1483	    return "$path/$conf";
1484	}
1485    }
1486
1487    return "";
1488}
1489
1490sub mailmap_email {
1491    my ($line) = @_;
1492
1493    my ($name, $address) = parse_email($line);
1494    my $email = format_email($name, $address, 1);
1495    my $real_name = $name;
1496    my $real_address = $address;
1497
1498    if (exists $mailmap->{names}->{$email} ||
1499	exists $mailmap->{addresses}->{$email}) {
1500	if (exists $mailmap->{names}->{$email}) {
1501	    $real_name = $mailmap->{names}->{$email};
1502	}
1503	if (exists $mailmap->{addresses}->{$email}) {
1504	    $real_address = $mailmap->{addresses}->{$email};
1505	}
1506    } else {
1507	if (exists $mailmap->{names}->{$address}) {
1508	    $real_name = $mailmap->{names}->{$address};
1509	}
1510	if (exists $mailmap->{addresses}->{$address}) {
1511	    $real_address = $mailmap->{addresses}->{$address};
1512	}
1513    }
1514    return format_email($real_name, $real_address, 1);
1515}
1516
1517sub mailmap {
1518    my (@addresses) = @_;
1519
1520    my @mapped_emails = ();
1521    foreach my $line (@addresses) {
1522	push(@mapped_emails, mailmap_email($line));
1523    }
1524    merge_by_realname(@mapped_emails) if ($email_use_mailmap);
1525    return @mapped_emails;
1526}
1527
1528sub merge_by_realname {
1529    my %address_map;
1530    my (@emails) = @_;
1531
1532    foreach my $email (@emails) {
1533	my ($name, $address) = parse_email($email);
1534	if (exists $address_map{$name}) {
1535	    $address = $address_map{$name};
1536	    $email = format_email($name, $address, 1);
1537	} else {
1538	    $address_map{$name} = $address;
1539	}
1540    }
1541}
1542
1543sub git_execute_cmd {
1544    my ($cmd) = @_;
1545    my @lines = ();
1546
1547    my $output = `$cmd`;
1548    $output =~ s/^\s*//gm;
1549    @lines = split("\n", $output);
1550
1551    return @lines;
1552}
1553
1554sub hg_execute_cmd {
1555    my ($cmd) = @_;
1556    my @lines = ();
1557
1558    my $output = `$cmd`;
1559    @lines = split("\n", $output);
1560
1561    return @lines;
1562}
1563
1564sub extract_formatted_signatures {
1565    my (@signature_lines) = @_;
1566
1567    my @type = @signature_lines;
1568
1569    s/\s*(.*):.*/$1/ for (@type);
1570
1571    # cut -f2- -d":"
1572    s/\s*.*:\s*(.+)\s*/$1/ for (@signature_lines);
1573
1574## Reformat email addresses (with names) to avoid badly written signatures
1575
1576    foreach my $signer (@signature_lines) {
1577	$signer = deduplicate_email($signer);
1578    }
1579
1580    return (\@type, \@signature_lines);
1581}
1582
1583sub vcs_find_signers {
1584    my ($cmd, $file) = @_;
1585    my $commits;
1586    my @lines = ();
1587    my @signatures = ();
1588    my @authors = ();
1589    my @stats = ();
1590
1591    @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
1592
1593    my $pattern = $VCS_cmds{"commit_pattern"};
1594    my $author_pattern = $VCS_cmds{"author_pattern"};
1595    my $stat_pattern = $VCS_cmds{"stat_pattern"};
1596
1597    $stat_pattern =~ s/(\$\w+)/$1/eeg;		#interpolate $stat_pattern
1598
1599    $commits = grep(/$pattern/, @lines);	# of commits
1600
1601    @authors = grep(/$author_pattern/, @lines);
1602    @signatures = grep(/^[ \t]*${signature_pattern}.*\@.*$/, @lines);
1603    @stats = grep(/$stat_pattern/, @lines);
1604
1605#    print("stats: <@stats>\n");
1606
1607    return (0, \@signatures, \@authors, \@stats) if !@signatures;
1608
1609    save_commits_by_author(@lines) if ($interactive);
1610    save_commits_by_signer(@lines) if ($interactive);
1611
1612    if (!$email_git_penguin_chiefs) {
1613	@signatures = grep(!/${penguin_chiefs}/i, @signatures);
1614    }
1615
1616    my ($author_ref, $authors_ref) = extract_formatted_signatures(@authors);
1617    my ($types_ref, $signers_ref) = extract_formatted_signatures(@signatures);
1618
1619    return ($commits, $signers_ref, $authors_ref, \@stats);
1620}
1621
1622sub vcs_find_author {
1623    my ($cmd) = @_;
1624    my @lines = ();
1625
1626    @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
1627
1628    if (!$email_git_penguin_chiefs) {
1629	@lines = grep(!/${penguin_chiefs}/i, @lines);
1630    }
1631
1632    return @lines if !@lines;
1633
1634    my @authors = ();
1635    foreach my $line (@lines) {
1636	if ($line =~ m/$VCS_cmds{"author_pattern"}/) {
1637	    my $author = $1;
1638	    my ($name, $address) = parse_email($author);
1639	    $author = format_email($name, $address, 1);
1640	    push(@authors, $author);
1641	}
1642    }
1643
1644    save_commits_by_author(@lines) if ($interactive);
1645    save_commits_by_signer(@lines) if ($interactive);
1646
1647    return @authors;
1648}
1649
1650sub vcs_save_commits {
1651    my ($cmd) = @_;
1652    my @lines = ();
1653    my @commits = ();
1654
1655    @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
1656
1657    foreach my $line (@lines) {
1658	if ($line =~ m/$VCS_cmds{"blame_commit_pattern"}/) {
1659	    push(@commits, $1);
1660	}
1661    }
1662
1663    return @commits;
1664}
1665
1666sub vcs_blame {
1667    my ($file) = @_;
1668    my $cmd;
1669    my @commits = ();
1670
1671    return @commits if (!(-f $file));
1672
1673    if (@range && $VCS_cmds{"blame_range_cmd"} eq "") {
1674	my @all_commits = ();
1675
1676	$cmd = $VCS_cmds{"blame_file_cmd"};
1677	$cmd =~ s/(\$\w+)/$1/eeg;		#interpolate $cmd
1678	@all_commits = vcs_save_commits($cmd);
1679
1680	foreach my $file_range_diff (@range) {
1681	    next if (!($file_range_diff =~ m/(.+):(.+):(.+)/));
1682	    my $diff_file = $1;
1683	    my $diff_start = $2;
1684	    my $diff_length = $3;
1685	    next if ("$file" ne "$diff_file");
1686	    for (my $i = $diff_start; $i < $diff_start + $diff_length; $i++) {
1687		push(@commits, $all_commits[$i]);
1688	    }
1689	}
1690    } elsif (@range) {
1691	foreach my $file_range_diff (@range) {
1692	    next if (!($file_range_diff =~ m/(.+):(.+):(.+)/));
1693	    my $diff_file = $1;
1694	    my $diff_start = $2;
1695	    my $diff_length = $3;
1696	    next if ("$file" ne "$diff_file");
1697	    $cmd = $VCS_cmds{"blame_range_cmd"};
1698	    $cmd =~ s/(\$\w+)/$1/eeg;		#interpolate $cmd
1699	    push(@commits, vcs_save_commits($cmd));
1700	}
1701    } else {
1702	$cmd = $VCS_cmds{"blame_file_cmd"};
1703	$cmd =~ s/(\$\w+)/$1/eeg;		#interpolate $cmd
1704	@commits = vcs_save_commits($cmd);
1705    }
1706
1707    foreach my $commit (@commits) {
1708	$commit =~ s/^\^//g;
1709    }
1710
1711    return @commits;
1712}
1713
1714my $printed_novcs = 0;
1715sub vcs_exists {
1716    %VCS_cmds = %VCS_cmds_git;
1717    return 1 if eval $VCS_cmds{"available"};
1718    %VCS_cmds = %VCS_cmds_hg;
1719    return 2 if eval $VCS_cmds{"available"};
1720    %VCS_cmds = ();
1721    if (!$printed_novcs) {
1722	warn("$P: No supported VCS found.  Add --nogit to options?\n");
1723	warn("Using a git repository produces better results.\n");
1724	warn("Try Linus Torvalds' latest git repository using:\n");
1725	warn("git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git\n");
1726	$printed_novcs = 1;
1727    }
1728    return 0;
1729}
1730
1731sub vcs_is_git {
1732    vcs_exists();
1733    return $vcs_used == 1;
1734}
1735
1736sub vcs_is_hg {
1737    return $vcs_used == 2;
1738}
1739
1740sub vcs_add_commit_signers {
1741    return if (!vcs_exists());
1742
1743    my ($commit, $desc) = @_;
1744    my $commit_count = 0;
1745    my $commit_authors_ref;
1746    my $commit_signers_ref;
1747    my $stats_ref;
1748    my @commit_authors = ();
1749    my @commit_signers = ();
1750    my $cmd;
1751
1752    $cmd = $VCS_cmds{"find_commit_signers_cmd"};
1753    $cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
1754
1755    ($commit_count, $commit_signers_ref, $commit_authors_ref, $stats_ref) = vcs_find_signers($cmd, "");
1756    @commit_authors = @{$commit_authors_ref} if defined $commit_authors_ref;
1757    @commit_signers = @{$commit_signers_ref} if defined $commit_signers_ref;
1758
1759    foreach my $signer (@commit_signers) {
1760	$signer = deduplicate_email($signer);
1761    }
1762
1763    vcs_assign($desc, 1, @commit_signers);
1764}
1765
1766sub interactive_get_maintainers {
1767    my ($list_ref) = @_;
1768    my @list = @$list_ref;
1769
1770    vcs_exists();
1771
1772    my %selected;
1773    my %authored;
1774    my %signed;
1775    my $count = 0;
1776    my $maintained = 0;
1777    foreach my $entry (@list) {
1778	$maintained = 1 if ($entry->[1] =~ /^(maintainer|supporter)/i);
1779	$selected{$count} = 1;
1780	$authored{$count} = 0;
1781	$signed{$count} = 0;
1782	$count++;
1783    }
1784
1785    #menu loop
1786    my $done = 0;
1787    my $print_options = 0;
1788    my $redraw = 1;
1789    while (!$done) {
1790	$count = 0;
1791	if ($redraw) {
1792	    printf STDERR "\n%1s %2s %-65s",
1793			  "*", "#", "email/list and role:stats";
1794	    if ($email_git ||
1795		($email_git_fallback && !$maintained) ||
1796		$email_git_blame) {
1797		print STDERR "auth sign";
1798	    }
1799	    print STDERR "\n";
1800	    foreach my $entry (@list) {
1801		my $email = $entry->[0];
1802		my $role = $entry->[1];
1803		my $sel = "";
1804		$sel = "*" if ($selected{$count});
1805		my $commit_author = $commit_author_hash{$email};
1806		my $commit_signer = $commit_signer_hash{$email};
1807		my $authored = 0;
1808		my $signed = 0;
1809		$authored++ for (@{$commit_author});
1810		$signed++ for (@{$commit_signer});
1811		printf STDERR "%1s %2d %-65s", $sel, $count + 1, $email;
1812		printf STDERR "%4d %4d", $authored, $signed
1813		    if ($authored > 0 || $signed > 0);
1814		printf STDERR "\n     %s\n", $role;
1815		if ($authored{$count}) {
1816		    my $commit_author = $commit_author_hash{$email};
1817		    foreach my $ref (@{$commit_author}) {
1818			print STDERR "     Author: @{$ref}[1]\n";
1819		    }
1820		}
1821		if ($signed{$count}) {
1822		    my $commit_signer = $commit_signer_hash{$email};
1823		    foreach my $ref (@{$commit_signer}) {
1824			print STDERR "     @{$ref}[2]: @{$ref}[1]\n";
1825		    }
1826		}
1827
1828		$count++;
1829	    }
1830	}
1831	my $date_ref = \$email_git_since;
1832	$date_ref = \$email_hg_since if (vcs_is_hg());
1833	if ($print_options) {
1834	    $print_options = 0;
1835	    if (vcs_exists()) {
1836		print STDERR <<EOT
1837
1838Version Control options:
1839g  use git history      [$email_git]
1840gf use git-fallback     [$email_git_fallback]
1841b  use git blame        [$email_git_blame]
1842bs use blame signatures [$email_git_blame_signatures]
1843c# minimum commits      [$email_git_min_signatures]
1844%# min percent          [$email_git_min_percent]
1845d# history to use       [$$date_ref]
1846x# max maintainers      [$email_git_max_maintainers]
1847t  all signature types  [$email_git_all_signature_types]
1848m  use .mailmap         [$email_use_mailmap]
1849EOT
1850	    }
1851	    print STDERR <<EOT
1852
1853Additional options:
18540  toggle all
1855tm toggle maintainers
1856tg toggle git entries
1857tl toggle open list entries
1858ts toggle subscriber list entries
1859f  emails in file       [$email_file_emails]
1860k  keywords in file     [$keywords]
1861r  remove duplicates    [$email_remove_duplicates]
1862p# pattern match depth  [$pattern_depth]
1863EOT
1864	}
1865	print STDERR
1866"\n#(toggle), A#(author), S#(signed) *(all), ^(none), O(options), Y(approve): ";
1867
1868	my $input = <STDIN>;
1869	chomp($input);
1870
1871	$redraw = 1;
1872	my $rerun = 0;
1873	my @wish = split(/[, ]+/, $input);
1874	foreach my $nr (@wish) {
1875	    $nr = lc($nr);
1876	    my $sel = substr($nr, 0, 1);
1877	    my $str = substr($nr, 1);
1878	    my $val = 0;
1879	    $val = $1 if $str =~ /^(\d+)$/;
1880
1881	    if ($sel eq "y") {
1882		$interactive = 0;
1883		$done = 1;
1884		$output_rolestats = 0;
1885		$output_roles = 0;
1886		last;
1887	    } elsif ($nr =~ /^\d+$/ && $nr > 0 && $nr <= $count) {
1888		$selected{$nr - 1} = !$selected{$nr - 1};
1889	    } elsif ($sel eq "*" || $sel eq '^') {
1890		my $toggle = 0;
1891		$toggle = 1 if ($sel eq '*');
1892		for (my $i = 0; $i < $count; $i++) {
1893		    $selected{$i} = $toggle;
1894		}
1895	    } elsif ($sel eq "0") {
1896		for (my $i = 0; $i < $count; $i++) {
1897		    $selected{$i} = !$selected{$i};
1898		}
1899	    } elsif ($sel eq "t") {
1900		if (lc($str) eq "m") {
1901		    for (my $i = 0; $i < $count; $i++) {
1902			$selected{$i} = !$selected{$i}
1903			    if ($list[$i]->[1] =~ /^(maintainer|supporter)/i);
1904		    }
1905		} elsif (lc($str) eq "g") {
1906		    for (my $i = 0; $i < $count; $i++) {
1907			$selected{$i} = !$selected{$i}
1908			    if ($list[$i]->[1] =~ /^(author|commit|signer)/i);
1909		    }
1910		} elsif (lc($str) eq "l") {
1911		    for (my $i = 0; $i < $count; $i++) {
1912			$selected{$i} = !$selected{$i}
1913			    if ($list[$i]->[1] =~ /^(open list)/i);
1914		    }
1915		} elsif (lc($str) eq "s") {
1916		    for (my $i = 0; $i < $count; $i++) {
1917			$selected{$i} = !$selected{$i}
1918			    if ($list[$i]->[1] =~ /^(subscriber list)/i);
1919		    }
1920		}
1921	    } elsif ($sel eq "a") {
1922		if ($val > 0 && $val <= $count) {
1923		    $authored{$val - 1} = !$authored{$val - 1};
1924		} elsif ($str eq '*' || $str eq '^') {
1925		    my $toggle = 0;
1926		    $toggle = 1 if ($str eq '*');
1927		    for (my $i = 0; $i < $count; $i++) {
1928			$authored{$i} = $toggle;
1929		    }
1930		}
1931	    } elsif ($sel eq "s") {
1932		if ($val > 0 && $val <= $count) {
1933		    $signed{$val - 1} = !$signed{$val - 1};
1934		} elsif ($str eq '*' || $str eq '^') {
1935		    my $toggle = 0;
1936		    $toggle = 1 if ($str eq '*');
1937		    for (my $i = 0; $i < $count; $i++) {
1938			$signed{$i} = $toggle;
1939		    }
1940		}
1941	    } elsif ($sel eq "o") {
1942		$print_options = 1;
1943		$redraw = 1;
1944	    } elsif ($sel eq "g") {
1945		if ($str eq "f") {
1946		    bool_invert(\$email_git_fallback);
1947		} else {
1948		    bool_invert(\$email_git);
1949		}
1950		$rerun = 1;
1951	    } elsif ($sel eq "b") {
1952		if ($str eq "s") {
1953		    bool_invert(\$email_git_blame_signatures);
1954		} else {
1955		    bool_invert(\$email_git_blame);
1956		}
1957		$rerun = 1;
1958	    } elsif ($sel eq "c") {
1959		if ($val > 0) {
1960		    $email_git_min_signatures = $val;
1961		    $rerun = 1;
1962		}
1963	    } elsif ($sel eq "x") {
1964		if ($val > 0) {
1965		    $email_git_max_maintainers = $val;
1966		    $rerun = 1;
1967		}
1968	    } elsif ($sel eq "%") {
1969		if ($str ne "" && $val >= 0) {
1970		    $email_git_min_percent = $val;
1971		    $rerun = 1;
1972		}
1973	    } elsif ($sel eq "d") {
1974		if (vcs_is_git()) {
1975		    $email_git_since = $str;
1976		} elsif (vcs_is_hg()) {
1977		    $email_hg_since = $str;
1978		}
1979		$rerun = 1;
1980	    } elsif ($sel eq "t") {
1981		bool_invert(\$email_git_all_signature_types);
1982		$rerun = 1;
1983	    } elsif ($sel eq "f") {
1984		bool_invert(\$email_file_emails);
1985		$rerun = 1;
1986	    } elsif ($sel eq "r") {
1987		bool_invert(\$email_remove_duplicates);
1988		$rerun = 1;
1989	    } elsif ($sel eq "m") {
1990		bool_invert(\$email_use_mailmap);
1991		read_mailmap();
1992		$rerun = 1;
1993	    } elsif ($sel eq "k") {
1994		bool_invert(\$keywords);
1995		$rerun = 1;
1996	    } elsif ($sel eq "p") {
1997		if ($str ne "" && $val >= 0) {
1998		    $pattern_depth = $val;
1999		    $rerun = 1;
2000		}
2001	    } elsif ($sel eq "h" || $sel eq "?") {
2002		print STDERR <<EOT
2003
2004Interactive mode allows you to select the various maintainers, submitters,
2005commit signers and mailing lists that could be CC'd on a patch.
2006
2007Any *'d entry is selected.
2008
2009If you have git or hg installed, you can choose to summarize the commit
2010history of files in the patch.  Also, each line of the current file can
2011be matched to its commit author and that commits signers with blame.
2012
2013Various knobs exist to control the length of time for active commit
2014tracking, the maximum number of commit authors and signers to add,
2015and such.
2016
2017Enter selections at the prompt until you are satisfied that the selected
2018maintainers are appropriate.  You may enter multiple selections separated
2019by either commas or spaces.
2020
2021EOT
2022	    } else {
2023		print STDERR "invalid option: '$nr'\n";
2024		$redraw = 0;
2025	    }
2026	}
2027	if ($rerun) {
2028	    print STDERR "git-blame can be very slow, please have patience..."
2029		if ($email_git_blame);
2030	    goto &get_maintainers;
2031	}
2032    }
2033
2034    #drop not selected entries
2035    $count = 0;
2036    my @new_emailto = ();
2037    foreach my $entry (@list) {
2038	if ($selected{$count}) {
2039	    push(@new_emailto, $list[$count]);
2040	}
2041	$count++;
2042    }
2043    return @new_emailto;
2044}
2045
2046sub bool_invert {
2047    my ($bool_ref) = @_;
2048
2049    if ($$bool_ref) {
2050	$$bool_ref = 0;
2051    } else {
2052	$$bool_ref = 1;
2053    }
2054}
2055
2056sub deduplicate_email {
2057    my ($email) = @_;
2058
2059    my $matched = 0;
2060    my ($name, $address) = parse_email($email);
2061    $email = format_email($name, $address, 1);
2062    $email = mailmap_email($email);
2063
2064    return $email if (!$email_remove_duplicates);
2065
2066    ($name, $address) = parse_email($email);
2067
2068    if ($name ne "" && $deduplicate_name_hash{lc($name)}) {
2069	$name = $deduplicate_name_hash{lc($name)}->[0];
2070	$address = $deduplicate_name_hash{lc($name)}->[1];
2071	$matched = 1;
2072    } elsif ($deduplicate_address_hash{lc($address)}) {
2073	$name = $deduplicate_address_hash{lc($address)}->[0];
2074	$address = $deduplicate_address_hash{lc($address)}->[1];
2075	$matched = 1;
2076    }
2077    if (!$matched) {
2078	$deduplicate_name_hash{lc($name)} = [ $name, $address ];
2079	$deduplicate_address_hash{lc($address)} = [ $name, $address ];
2080    }
2081    $email = format_email($name, $address, 1);
2082    $email = mailmap_email($email);
2083    return $email;
2084}
2085
2086sub save_commits_by_author {
2087    my (@lines) = @_;
2088
2089    my @authors = ();
2090    my @commits = ();
2091    my @subjects = ();
2092
2093    foreach my $line (@lines) {
2094	if ($line =~ m/$VCS_cmds{"author_pattern"}/) {
2095	    my $author = $1;
2096	    $author = deduplicate_email($author);
2097	    push(@authors, $author);
2098	}
2099	push(@commits, $1) if ($line =~ m/$VCS_cmds{"commit_pattern"}/);
2100	push(@subjects, $1) if ($line =~ m/$VCS_cmds{"subject_pattern"}/);
2101    }
2102
2103    for (my $i = 0; $i < @authors; $i++) {
2104	my $exists = 0;
2105	foreach my $ref(@{$commit_author_hash{$authors[$i]}}) {
2106	    if (@{$ref}[0] eq $commits[$i] &&
2107		@{$ref}[1] eq $subjects[$i]) {
2108		$exists = 1;
2109		last;
2110	    }
2111	}
2112	if (!$exists) {
2113	    push(@{$commit_author_hash{$authors[$i]}},
2114		 [ ($commits[$i], $subjects[$i]) ]);
2115	}
2116    }
2117}
2118
2119sub save_commits_by_signer {
2120    my (@lines) = @_;
2121
2122    my $commit = "";
2123    my $subject = "";
2124
2125    foreach my $line (@lines) {
2126	$commit = $1 if ($line =~ m/$VCS_cmds{"commit_pattern"}/);
2127	$subject = $1 if ($line =~ m/$VCS_cmds{"subject_pattern"}/);
2128	if ($line =~ /^[ \t]*${signature_pattern}.*\@.*$/) {
2129	    my @signatures = ($line);
2130	    my ($types_ref, $signers_ref) = extract_formatted_signatures(@signatures);
2131	    my @types = @$types_ref;
2132	    my @signers = @$signers_ref;
2133
2134	    my $type = $types[0];
2135	    my $signer = $signers[0];
2136
2137	    $signer = deduplicate_email($signer);
2138
2139	    my $exists = 0;
2140	    foreach my $ref(@{$commit_signer_hash{$signer}}) {
2141		if (@{$ref}[0] eq $commit &&
2142		    @{$ref}[1] eq $subject &&
2143		    @{$ref}[2] eq $type) {
2144		    $exists = 1;
2145		    last;
2146		}
2147	    }
2148	    if (!$exists) {
2149		push(@{$commit_signer_hash{$signer}},
2150		     [ ($commit, $subject, $type) ]);
2151	    }
2152	}
2153    }
2154}
2155
2156sub vcs_assign {
2157    my ($role, $divisor, @lines) = @_;
2158
2159    my %hash;
2160    my $count = 0;
2161
2162    return if (@lines <= 0);
2163
2164    if ($divisor <= 0) {
2165	warn("Bad divisor in " . (caller(0))[3] . ": $divisor\n");
2166	$divisor = 1;
2167    }
2168
2169    @lines = mailmap(@lines);
2170
2171    return if (@lines <= 0);
2172
2173    @lines = sort(@lines);
2174
2175    # uniq -c
2176    $hash{$_}++ for @lines;
2177
2178    # sort -rn
2179    foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {
2180	my $sign_offs = $hash{$line};
2181	my $percent = $sign_offs * 100 / $divisor;
2182
2183	$percent = 100 if ($percent > 100);
2184	next if (ignore_email_address($line));
2185	$count++;
2186	last if ($sign_offs < $email_git_min_signatures ||
2187		 $count > $email_git_max_maintainers ||
2188		 $percent < $email_git_min_percent);
2189	push_email_address($line, '');
2190	if ($output_rolestats) {
2191	    my $fmt_percent = sprintf("%.0f", $percent);
2192	    add_role($line, "$role:$sign_offs/$divisor=$fmt_percent%");
2193	} else {
2194	    add_role($line, $role);
2195	}
2196    }
2197}
2198
2199sub vcs_file_signoffs {
2200    my ($file) = @_;
2201
2202    my $authors_ref;
2203    my $signers_ref;
2204    my $stats_ref;
2205    my @authors = ();
2206    my @signers = ();
2207    my @stats = ();
2208    my $commits;
2209
2210    $vcs_used = vcs_exists();
2211    return if (!$vcs_used);
2212
2213    my $cmd = $VCS_cmds{"find_signers_cmd"};
2214    $cmd =~ s/(\$\w+)/$1/eeg;		# interpolate $cmd
2215
2216    ($commits, $signers_ref, $authors_ref, $stats_ref) = vcs_find_signers($cmd, $file);
2217
2218    @signers = @{$signers_ref} if defined $signers_ref;
2219    @authors = @{$authors_ref} if defined $authors_ref;
2220    @stats = @{$stats_ref} if defined $stats_ref;
2221
2222#    print("commits: <$commits>\nsigners:<@signers>\nauthors: <@authors>\nstats: <@stats>\n");
2223
2224    foreach my $signer (@signers) {
2225	$signer = deduplicate_email($signer);
2226    }
2227
2228    vcs_assign("commit_signer", $commits, @signers);
2229    vcs_assign("authored", $commits, @authors);
2230    if ($#authors == $#stats) {
2231	my $stat_pattern = $VCS_cmds{"stat_pattern"};
2232	$stat_pattern =~ s/(\$\w+)/$1/eeg;	#interpolate $stat_pattern
2233
2234	my $added = 0;
2235	my $deleted = 0;
2236	for (my $i = 0; $i <= $#stats; $i++) {
2237	    if ($stats[$i] =~ /$stat_pattern/) {
2238		$added += $1;
2239		$deleted += $2;
2240	    }
2241	}
2242	my @tmp_authors = uniq(@authors);
2243	foreach my $author (@tmp_authors) {
2244	    $author = deduplicate_email($author);
2245	}
2246	@tmp_authors = uniq(@tmp_authors);
2247	my @list_added = ();
2248	my @list_deleted = ();
2249	foreach my $author (@tmp_authors) {
2250	    my $auth_added = 0;
2251	    my $auth_deleted = 0;
2252	    for (my $i = 0; $i <= $#stats; $i++) {
2253		if ($author eq deduplicate_email($authors[$i]) &&
2254		    $stats[$i] =~ /$stat_pattern/) {
2255		    $auth_added += $1;
2256		    $auth_deleted += $2;
2257		}
2258	    }
2259	    for (my $i = 0; $i < $auth_added; $i++) {
2260		push(@list_added, $author);
2261	    }
2262	    for (my $i = 0; $i < $auth_deleted; $i++) {
2263		push(@list_deleted, $author);
2264	    }
2265	}
2266	vcs_assign("added_lines", $added, @list_added);
2267	vcs_assign("removed_lines", $deleted, @list_deleted);
2268    }
2269}
2270
2271sub vcs_file_blame {
2272    my ($file) = @_;
2273
2274    my @signers = ();
2275    my @all_commits = ();
2276    my @commits = ();
2277    my $total_commits;
2278    my $total_lines;
2279
2280    $vcs_used = vcs_exists();
2281    return if (!$vcs_used);
2282
2283    @all_commits = vcs_blame($file);
2284    @commits = uniq(@all_commits);
2285    $total_commits = @commits;
2286    $total_lines = @all_commits;
2287
2288    if ($email_git_blame_signatures) {
2289	if (vcs_is_hg()) {
2290	    my $commit_count;
2291	    my $commit_authors_ref;
2292	    my $commit_signers_ref;
2293	    my $stats_ref;
2294	    my @commit_authors = ();
2295	    my @commit_signers = ();
2296	    my $commit = join(" -r ", @commits);
2297	    my $cmd;
2298
2299	    $cmd = $VCS_cmds{"find_commit_signers_cmd"};
2300	    $cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
2301
2302	    ($commit_count, $commit_signers_ref, $commit_authors_ref, $stats_ref) = vcs_find_signers($cmd, $file);
2303	    @commit_authors = @{$commit_authors_ref} if defined $commit_authors_ref;
2304	    @commit_signers = @{$commit_signers_ref} if defined $commit_signers_ref;
2305
2306	    push(@signers, @commit_signers);
2307	} else {
2308	    foreach my $commit (@commits) {
2309		my $commit_count;
2310		my $commit_authors_ref;
2311		my $commit_signers_ref;
2312		my $stats_ref;
2313		my @commit_authors = ();
2314		my @commit_signers = ();
2315		my $cmd;
2316
2317		$cmd = $VCS_cmds{"find_commit_signers_cmd"};
2318		$cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
2319
2320		($commit_count, $commit_signers_ref, $commit_authors_ref, $stats_ref) = vcs_find_signers($cmd, $file);
2321		@commit_authors = @{$commit_authors_ref} if defined $commit_authors_ref;
2322		@commit_signers = @{$commit_signers_ref} if defined $commit_signers_ref;
2323
2324		push(@signers, @commit_signers);
2325	    }
2326	}
2327    }
2328
2329    if ($from_filename) {
2330	if ($output_rolestats) {
2331	    my @blame_signers;
2332	    if (vcs_is_hg()) {{		# Double brace for last exit
2333		my $commit_count;
2334		my @commit_signers = ();
2335		@commits = uniq(@commits);
2336		@commits = sort(@commits);
2337		my $commit = join(" -r ", @commits);
2338		my $cmd;
2339
2340		$cmd = $VCS_cmds{"find_commit_author_cmd"};
2341		$cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
2342
2343		my @lines = ();
2344
2345		@lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
2346
2347		if (!$email_git_penguin_chiefs) {
2348		    @lines = grep(!/${penguin_chiefs}/i, @lines);
2349		}
2350
2351		last if !@lines;
2352
2353		my @authors = ();
2354		foreach my $line (@lines) {
2355		    if ($line =~ m/$VCS_cmds{"author_pattern"}/) {
2356			my $author = $1;
2357			$author = deduplicate_email($author);
2358			push(@authors, $author);
2359		    }
2360		}
2361
2362		save_commits_by_author(@lines) if ($interactive);
2363		save_commits_by_signer(@lines) if ($interactive);
2364
2365		push(@signers, @authors);
2366	    }}
2367	    else {
2368		foreach my $commit (@commits) {
2369		    my $i;
2370		    my $cmd = $VCS_cmds{"find_commit_author_cmd"};
2371		    $cmd =~ s/(\$\w+)/$1/eeg;	#interpolate $cmd
2372		    my @author = vcs_find_author($cmd);
2373		    next if !@author;
2374
2375		    my $formatted_author = deduplicate_email($author[0]);
2376
2377		    my $count = grep(/$commit/, @all_commits);
2378		    for ($i = 0; $i < $count ; $i++) {
2379			push(@blame_signers, $formatted_author);
2380		    }
2381		}
2382	    }
2383	    if (@blame_signers) {
2384		vcs_assign("authored lines", $total_lines, @blame_signers);
2385	    }
2386	}
2387	foreach my $signer (@signers) {
2388	    $signer = deduplicate_email($signer);
2389	}
2390	vcs_assign("commits", $total_commits, @signers);
2391    } else {
2392	foreach my $signer (@signers) {
2393	    $signer = deduplicate_email($signer);
2394	}
2395	vcs_assign("modified commits", $total_commits, @signers);
2396    }
2397}
2398
2399sub vcs_file_exists {
2400    my ($file) = @_;
2401
2402    my $exists;
2403
2404    my $vcs_used = vcs_exists();
2405    return 0 if (!$vcs_used);
2406
2407    my $cmd = $VCS_cmds{"file_exists_cmd"};
2408    $cmd =~ s/(\$\w+)/$1/eeg;		# interpolate $cmd
2409    $cmd .= " 2>&1";
2410    $exists = &{$VCS_cmds{"execute_cmd"}}($cmd);
2411
2412    return 0 if ($? != 0);
2413
2414    return $exists;
2415}
2416
2417sub vcs_list_files {
2418    my ($file) = @_;
2419
2420    my @lsfiles = ();
2421
2422    my $vcs_used = vcs_exists();
2423    return 0 if (!$vcs_used);
2424
2425    my $cmd = $VCS_cmds{"list_files_cmd"};
2426    $cmd =~ s/(\$\w+)/$1/eeg;   # interpolate $cmd
2427    @lsfiles = &{$VCS_cmds{"execute_cmd"}}($cmd);
2428
2429    return () if ($? != 0);
2430
2431    return @lsfiles;
2432}
2433
2434sub uniq {
2435    my (@parms) = @_;
2436
2437    my %saw;
2438    @parms = grep(!$saw{$_}++, @parms);
2439    return @parms;
2440}
2441
2442sub sort_and_uniq {
2443    my (@parms) = @_;
2444
2445    my %saw;
2446    @parms = sort @parms;
2447    @parms = grep(!$saw{$_}++, @parms);
2448    return @parms;
2449}
2450
2451sub clean_file_emails {
2452    my (@file_emails) = @_;
2453    my @fmt_emails = ();
2454
2455    foreach my $email (@file_emails) {
2456	$email =~ s/[\(\<\{]{0,1}([A-Za-z0-9_\.\+-]+\@[A-Za-z0-9\.-]+)[\)\>\}]{0,1}/\<$1\>/g;
2457	my ($name, $address) = parse_email($email);
2458	if ($name eq '"[,\.]"') {
2459	    $name = "";
2460	}
2461
2462	my @nw = split(/[^A-Za-zÀ-ÿ\'\,\.\+-]/, $name);
 
 
 
 
 
 
 
 
 
2463	if (@nw > 2) {
2464	    my $first = $nw[@nw - 3];
2465	    my $middle = $nw[@nw - 2];
2466	    my $last = $nw[@nw - 1];
2467
2468	    if (((length($first) == 1 && $first =~ m/[A-Za-z]/) ||
2469		 (length($first) == 2 && substr($first, -1) eq ".")) ||
2470		(length($middle) == 1 ||
2471		 (length($middle) == 2 && substr($middle, -1) eq "."))) {
2472		$name = "$first $middle $last";
2473	    } else {
2474		$name = "$middle $last";
2475	    }
 
 
2476	}
2477
2478	if (substr($name, -1) =~ /[,\.]/) {
2479	    $name = substr($name, 0, length($name) - 1);
2480	} elsif (substr($name, -2) =~ /[,\.]"/) {
2481	    $name = substr($name, 0, length($name) - 2) . '"';
2482	}
2483
2484	if (substr($name, 0, 1) =~ /[,\.]/) {
2485	    $name = substr($name, 1, length($name) - 1);
2486	} elsif (substr($name, 0, 2) =~ /"[,\.]/) {
2487	    $name = '"' . substr($name, 2, length($name) - 2);
2488	}
2489
2490	my $fmt_email = format_email($name, $address, $email_usename);
2491	push(@fmt_emails, $fmt_email);
2492    }
2493    return @fmt_emails;
2494}
2495
2496sub merge_email {
2497    my @lines;
2498    my %saw;
2499
2500    for (@_) {
2501	my ($address, $role) = @$_;
2502	if (!$saw{$address}) {
2503	    if ($output_roles) {
2504		push(@lines, "$address ($role)");
2505	    } else {
2506		push(@lines, $address);
2507	    }
2508	    $saw{$address} = 1;
2509	}
2510    }
2511
2512    return @lines;
2513}
2514
2515sub output {
2516    my (@parms) = @_;
2517
2518    if ($output_multiline) {
2519	foreach my $line (@parms) {
2520	    print("${line}\n");
2521	}
2522    } else {
2523	print(join($output_separator, @parms));
2524	print("\n");
2525    }
2526}
2527
2528my $rfc822re;
2529
2530sub make_rfc822re {
2531#   Basic lexical tokens are specials, domain_literal, quoted_string, atom, and
2532#   comment.  We must allow for rfc822_lwsp (or comments) after each of these.
2533#   This regexp will only work on addresses which have had comments stripped
2534#   and replaced with rfc822_lwsp.
2535
2536    my $specials = '()<>@,;:\\\\".\\[\\]';
2537    my $controls = '\\000-\\037\\177';
2538
2539    my $dtext = "[^\\[\\]\\r\\\\]";
2540    my $domain_literal = "\\[(?:$dtext|\\\\.)*\\]$rfc822_lwsp*";
2541
2542    my $quoted_string = "\"(?:[^\\\"\\r\\\\]|\\\\.|$rfc822_lwsp)*\"$rfc822_lwsp*";
2543
2544#   Use zero-width assertion to spot the limit of an atom.  A simple
2545#   $rfc822_lwsp* causes the regexp engine to hang occasionally.
2546    my $atom = "[^$specials $controls]+(?:$rfc822_lwsp+|\\Z|(?=[\\[\"$specials]))";
2547    my $word = "(?:$atom|$quoted_string)";
2548    my $localpart = "$word(?:\\.$rfc822_lwsp*$word)*";
2549
2550    my $sub_domain = "(?:$atom|$domain_literal)";
2551    my $domain = "$sub_domain(?:\\.$rfc822_lwsp*$sub_domain)*";
2552
2553    my $addr_spec = "$localpart\@$rfc822_lwsp*$domain";
2554
2555    my $phrase = "$word*";
2556    my $route = "(?:\@$domain(?:,\@$rfc822_lwsp*$domain)*:$rfc822_lwsp*)";
2557    my $route_addr = "\\<$rfc822_lwsp*$route?$addr_spec\\>$rfc822_lwsp*";
2558    my $mailbox = "(?:$addr_spec|$phrase$route_addr)";
2559
2560    my $group = "$phrase:$rfc822_lwsp*(?:$mailbox(?:,\\s*$mailbox)*)?;\\s*";
2561    my $address = "(?:$mailbox|$group)";
2562
2563    return "$rfc822_lwsp*$address";
2564}
2565
2566sub rfc822_strip_comments {
2567    my $s = shift;
2568#   Recursively remove comments, and replace with a single space.  The simpler
2569#   regexps in the Email Addressing FAQ are imperfect - they will miss escaped
2570#   chars in atoms, for example.
2571
2572    while ($s =~ s/^((?:[^"\\]|\\.)*
2573                    (?:"(?:[^"\\]|\\.)*"(?:[^"\\]|\\.)*)*)
2574                    \((?:[^()\\]|\\.)*\)/$1 /osx) {}
2575    return $s;
2576}
2577
2578#   valid: returns true if the parameter is an RFC822 valid address
2579#
2580sub rfc822_valid {
2581    my $s = rfc822_strip_comments(shift);
2582
2583    if (!$rfc822re) {
2584        $rfc822re = make_rfc822re();
2585    }
2586
2587    return $s =~ m/^$rfc822re$/so && $s =~ m/^$rfc822_char*$/;
2588}
2589
2590#   validlist: In scalar context, returns true if the parameter is an RFC822
2591#              valid list of addresses.
2592#
2593#              In list context, returns an empty list on failure (an invalid
2594#              address was found); otherwise a list whose first element is the
2595#              number of addresses found and whose remaining elements are the
2596#              addresses.  This is needed to disambiguate failure (invalid)
2597#              from success with no addresses found, because an empty string is
2598#              a valid list.
2599
2600sub rfc822_validlist {
2601    my $s = rfc822_strip_comments(shift);
2602
2603    if (!$rfc822re) {
2604        $rfc822re = make_rfc822re();
2605    }
2606    # * null list items are valid according to the RFC
2607    # * the '1' business is to aid in distinguishing failure from no results
2608
2609    my @r;
2610    if ($s =~ m/^(?:$rfc822re)?(?:,(?:$rfc822re)?)*$/so &&
2611	$s =~ m/^$rfc822_char*$/) {
2612        while ($s =~ m/(?:^|,$rfc822_lwsp*)($rfc822re)/gos) {
2613            push(@r, $1);
2614        }
2615        return wantarray ? (scalar(@r), @r) : 1;
2616    }
2617    return wantarray ? () : 0;
2618}
v6.13.7
   1#!/usr/bin/env perl
   2# SPDX-License-Identifier: GPL-2.0
   3#
   4# (c) 2007, Joe Perches <joe@perches.com>
   5#           created from checkpatch.pl
   6#
   7# Print selected MAINTAINERS information for
   8# the files modified in a patch or for a file
   9#
  10# usage: perl scripts/get_maintainer.pl [OPTIONS] <patch>
  11#        perl scripts/get_maintainer.pl [OPTIONS] -f <file>
  12
  13use warnings;
  14use strict;
  15
  16my $P = $0;
  17my $V = '0.26';
  18
  19use Getopt::Long qw(:config no_auto_abbrev);
  20use Cwd;
  21use File::Find;
  22use File::Spec::Functions;
  23use open qw(:std :encoding(UTF-8));
  24
  25my $cur_path = fastgetcwd() . '/';
  26my $lk_path = "./";
  27my $email = 1;
  28my $email_usename = 1;
  29my $email_maintainer = 1;
  30my $email_reviewer = 1;
  31my $email_fixes = 1;
  32my $email_list = 1;
  33my $email_moderated_list = 1;
  34my $email_subscriber_list = 0;
  35my $email_git_penguin_chiefs = 0;
  36my $email_git = 0;
  37my $email_git_all_signature_types = 0;
  38my $email_git_blame = 0;
  39my $email_git_blame_signatures = 1;
  40my $email_git_fallback = 1;
  41my $email_git_min_signatures = 1;
  42my $email_git_max_maintainers = 5;
  43my $email_git_min_percent = 5;
  44my $email_git_since = "1-year-ago";
  45my $email_hg_since = "-365";
  46my $interactive = 0;
  47my $email_remove_duplicates = 1;
  48my $email_use_mailmap = 1;
  49my $output_multiline = 1;
  50my $output_separator = ", ";
  51my $output_roles = 0;
  52my $output_rolestats = 1;
  53my $output_section_maxlen = 50;
  54my $scm = 0;
  55my $tree = 1;
  56my $web = 0;
  57my $bug = 0;
  58my $subsystem = 0;
  59my $status = 0;
  60my $letters = "";
  61my $keywords = 1;
  62my $keywords_in_file = 0;
  63my $sections = 0;
  64my $email_file_emails = 0;
  65my $from_filename = 0;
  66my $pattern_depth = 0;
  67my $self_test = undef;
  68my $version = 0;
  69my $help = 0;
  70my $find_maintainer_files = 0;
  71my $maintainer_path;
  72my $vcs_used = 0;
  73
  74my $exit = 0;
  75
  76my @files = ();
  77my @fixes = ();			# If a patch description includes Fixes: lines
  78my @range = ();
  79my @keyword_tvi = ();
  80my @file_emails = ();
  81
  82my %commit_author_hash;
  83my %commit_signer_hash;
  84
  85my @penguin_chief = ();
  86push(@penguin_chief, "Linus Torvalds:torvalds\@linux-foundation.org");
  87#Andrew wants in on most everything - 2009/01/14
  88#push(@penguin_chief, "Andrew Morton:akpm\@linux-foundation.org");
  89
  90my @penguin_chief_names = ();
  91foreach my $chief (@penguin_chief) {
  92    if ($chief =~ m/^(.*):(.*)/) {
  93	my $chief_name = $1;
  94	my $chief_addr = $2;
  95	push(@penguin_chief_names, $chief_name);
  96    }
  97}
  98my $penguin_chiefs = "\(" . join("|", @penguin_chief_names) . "\)";
  99
 100# Signature types of people who are either
 101# 	a) responsible for the code in question, or
 102# 	b) familiar enough with it to give relevant feedback
 103my @signature_tags = ();
 104push(@signature_tags, "Signed-off-by:");
 105push(@signature_tags, "Reviewed-by:");
 106push(@signature_tags, "Acked-by:");
 107
 108my $signature_pattern = "\(" . join("|", @signature_tags) . "\)";
 109
 110# rfc822 email address - preloaded methods go here.
 111my $rfc822_lwsp = "(?:(?:\\r\\n)?[ \\t])";
 112my $rfc822_char = '[\\000-\\377]';
 113
 114# VCS command support: class-like functions and strings
 115
 116my %VCS_cmds;
 117
 118my %VCS_cmds_git = (
 119    "execute_cmd" => \&git_execute_cmd,
 120    "available" => '(which("git") ne "") && (-e ".git")',
 121    "find_signers_cmd" =>
 122	"git log --no-color --follow --since=\$email_git_since " .
 123	    '--numstat --no-merges ' .
 124	    '--format="GitCommit: %H%n' .
 125		      'GitAuthor: %an <%ae>%n' .
 126		      'GitDate: %aD%n' .
 127		      'GitSubject: %s%n' .
 128		      '%b%n"' .
 129	    " -- \$file",
 130    "find_commit_signers_cmd" =>
 131	"git log --no-color " .
 132	    '--numstat ' .
 133	    '--format="GitCommit: %H%n' .
 134		      'GitAuthor: %an <%ae>%n' .
 135		      'GitDate: %aD%n' .
 136		      'GitSubject: %s%n' .
 137		      '%b%n"' .
 138	    " -1 \$commit",
 139    "find_commit_author_cmd" =>
 140	"git log --no-color " .
 141	    '--numstat ' .
 142	    '--format="GitCommit: %H%n' .
 143		      'GitAuthor: %an <%ae>%n' .
 144		      'GitDate: %aD%n' .
 145		      'GitSubject: %s%n"' .
 146	    " -1 \$commit",
 147    "blame_range_cmd" => "git blame -l -L \$diff_start,+\$diff_length \$file",
 148    "blame_file_cmd" => "git blame -l \$file",
 149    "commit_pattern" => "^GitCommit: ([0-9a-f]{40,40})",
 150    "blame_commit_pattern" => "^([0-9a-f]+) ",
 151    "author_pattern" => "^GitAuthor: (.*)",
 152    "subject_pattern" => "^GitSubject: (.*)",
 153    "stat_pattern" => "^(\\d+)\\t(\\d+)\\t\$file\$",
 154    "file_exists_cmd" => "git ls-files \$file",
 155    "list_files_cmd" => "git ls-files \$file",
 156);
 157
 158my %VCS_cmds_hg = (
 159    "execute_cmd" => \&hg_execute_cmd,
 160    "available" => '(which("hg") ne "") && (-d ".hg")',
 161    "find_signers_cmd" =>
 162	"hg log --date=\$email_hg_since " .
 163	    "--template='HgCommit: {node}\\n" .
 164	                "HgAuthor: {author}\\n" .
 165			"HgSubject: {desc}\\n'" .
 166	    " -- \$file",
 167    "find_commit_signers_cmd" =>
 168	"hg log " .
 169	    "--template='HgSubject: {desc}\\n'" .
 170	    " -r \$commit",
 171    "find_commit_author_cmd" =>
 172	"hg log " .
 173	    "--template='HgCommit: {node}\\n" .
 174		        "HgAuthor: {author}\\n" .
 175			"HgSubject: {desc|firstline}\\n'" .
 176	    " -r \$commit",
 177    "blame_range_cmd" => "",		# not supported
 178    "blame_file_cmd" => "hg blame -n \$file",
 179    "commit_pattern" => "^HgCommit: ([0-9a-f]{40,40})",
 180    "blame_commit_pattern" => "^([ 0-9a-f]+):",
 181    "author_pattern" => "^HgAuthor: (.*)",
 182    "subject_pattern" => "^HgSubject: (.*)",
 183    "stat_pattern" => "^(\\d+)\t(\\d+)\t\$file\$",
 184    "file_exists_cmd" => "hg files \$file",
 185    "list_files_cmd" => "hg manifest -R \$file",
 186);
 187
 188my $conf = which_conf(".get_maintainer.conf");
 189if (-f $conf) {
 190    my @conf_args;
 191    open(my $conffile, '<', "$conf")
 192	or warn "$P: Can't find a readable .get_maintainer.conf file $!\n";
 193
 194    while (<$conffile>) {
 195	my $line = $_;
 196
 197	$line =~ s/\s*\n?$//g;
 198	$line =~ s/^\s*//g;
 199	$line =~ s/\s+/ /g;
 200
 201	next if ($line =~ m/^\s*#/);
 202	next if ($line =~ m/^\s*$/);
 203
 204	my @words = split(" ", $line);
 205	foreach my $word (@words) {
 206	    last if ($word =~ m/^#/);
 207	    push (@conf_args, $word);
 208	}
 209    }
 210    close($conffile);
 211    unshift(@ARGV, @conf_args) if @conf_args;
 212}
 213
 214my @ignore_emails = ();
 215my $ignore_file = which_conf(".get_maintainer.ignore");
 216if (-f $ignore_file) {
 217    open(my $ignore, '<', "$ignore_file")
 218	or warn "$P: Can't find a readable .get_maintainer.ignore file $!\n";
 219    while (<$ignore>) {
 220	my $line = $_;
 221
 222	$line =~ s/\s*\n?$//;
 223	$line =~ s/^\s*//;
 224	$line =~ s/\s+$//;
 225	$line =~ s/#.*$//;
 226
 227	next if ($line =~ m/^\s*$/);
 228	if (rfc822_valid($line)) {
 229	    push(@ignore_emails, $line);
 230	}
 231    }
 232    close($ignore);
 233}
 234
 235if ($#ARGV > 0) {
 236    foreach (@ARGV) {
 237        if ($_ =~ /^-{1,2}self-test(?:=|$)/) {
 238            die "$P: using --self-test does not allow any other option or argument\n";
 239        }
 240    }
 241}
 242
 243if (!GetOptions(
 244		'email!' => \$email,
 245		'git!' => \$email_git,
 246		'git-all-signature-types!' => \$email_git_all_signature_types,
 247		'git-blame!' => \$email_git_blame,
 248		'git-blame-signatures!' => \$email_git_blame_signatures,
 249		'git-fallback!' => \$email_git_fallback,
 250		'git-chief-penguins!' => \$email_git_penguin_chiefs,
 251		'git-min-signatures=i' => \$email_git_min_signatures,
 252		'git-max-maintainers=i' => \$email_git_max_maintainers,
 253		'git-min-percent=i' => \$email_git_min_percent,
 254		'git-since=s' => \$email_git_since,
 255		'hg-since=s' => \$email_hg_since,
 256		'i|interactive!' => \$interactive,
 257		'remove-duplicates!' => \$email_remove_duplicates,
 258		'mailmap!' => \$email_use_mailmap,
 259		'm!' => \$email_maintainer,
 260		'r!' => \$email_reviewer,
 261		'n!' => \$email_usename,
 262		'l!' => \$email_list,
 263		'fixes!' => \$email_fixes,
 264		'moderated!' => \$email_moderated_list,
 265		's!' => \$email_subscriber_list,
 266		'multiline!' => \$output_multiline,
 267		'roles!' => \$output_roles,
 268		'rolestats!' => \$output_rolestats,
 269		'separator=s' => \$output_separator,
 270		'subsystem!' => \$subsystem,
 271		'status!' => \$status,
 272		'scm!' => \$scm,
 273		'tree!' => \$tree,
 274		'web!' => \$web,
 275		'bug!' => \$bug,
 276		'letters=s' => \$letters,
 277		'pattern-depth=i' => \$pattern_depth,
 278		'k|keywords!' => \$keywords,
 279		'kf|keywords-in-file!' => \$keywords_in_file,
 280		'sections!' => \$sections,
 281		'fe|file-emails!' => \$email_file_emails,
 282		'f|file' => \$from_filename,
 283		'find-maintainer-files' => \$find_maintainer_files,
 284		'mpath|maintainer-path=s' => \$maintainer_path,
 285		'self-test:s' => \$self_test,
 286		'v|version' => \$version,
 287		'h|help|usage' => \$help,
 288		)) {
 289    die "$P: invalid argument - use --help if necessary\n";
 290}
 291
 292if ($help != 0) {
 293    usage();
 294    exit 0;
 295}
 296
 297if ($version != 0) {
 298    print("${P} ${V}\n");
 299    exit 0;
 300}
 301
 302if (defined $self_test) {
 303    read_all_maintainer_files();
 304    self_test();
 305    exit 0;
 306}
 307
 308if (-t STDIN && !@ARGV) {
 309    # We're talking to a terminal, but have no command line arguments.
 310    die "$P: missing patchfile or -f file - use --help if necessary\n";
 311}
 312
 313$output_multiline = 0 if ($output_separator ne ", ");
 314$output_rolestats = 1 if ($interactive);
 315$output_roles = 1 if ($output_rolestats);
 316
 317if ($sections || $letters ne "") {
 318    $sections = 1;
 319    $email = 0;
 320    $email_list = 0;
 321    $scm = 0;
 322    $status = 0;
 323    $subsystem = 0;
 324    $web = 0;
 325    $bug = 0;
 326    $keywords = 0;
 327    $keywords_in_file = 0;
 328    $interactive = 0;
 329} else {
 330    my $selections = $email + $scm + $status + $subsystem + $web + $bug;
 331    if ($selections == 0) {
 332	die "$P:  Missing required option: email, scm, status, subsystem, web or bug\n";
 333    }
 334}
 335
 336if ($email &&
 337    ($email_maintainer + $email_reviewer +
 338     $email_list + $email_subscriber_list +
 339     $email_git + $email_git_penguin_chiefs + $email_git_blame) == 0) {
 340    die "$P: Please select at least 1 email option\n";
 341}
 342
 343if ($tree && !top_of_kernel_tree($lk_path)) {
 344    die "$P: The current directory does not appear to be "
 345	. "a linux kernel source tree.\n";
 346}
 347
 348## Read MAINTAINERS for type/value pairs
 349
 350my @typevalue = ();
 351my %keyword_hash;
 352my @mfiles = ();
 353my @self_test_info = ();
 354
 355sub read_maintainer_file {
 356    my ($file) = @_;
 357
 358    open (my $maint, '<', "$file")
 359	or die "$P: Can't open MAINTAINERS file '$file': $!\n";
 360    my $i = 1;
 361    while (<$maint>) {
 362	my $line = $_;
 363	chomp $line;
 364
 365	if ($line =~ m/^([A-Z]):\s*(.*)/) {
 366	    my $type = $1;
 367	    my $value = $2;
 368
 369	    ##Filename pattern matching
 370	    if ($type eq "F" || $type eq "X") {
 371		$value =~ s@\.@\\\.@g;       ##Convert . to \.
 372		$value =~ s/\*/\.\*/g;       ##Convert * to .*
 373		$value =~ s/\?/\./g;         ##Convert ? to .
 374		##if pattern is a directory and it lacks a trailing slash, add one
 375		if ((-d $value)) {
 376		    $value =~ s@([^/])$@$1/@;
 377		}
 378	    } elsif ($type eq "K") {
 379		$keyword_hash{@typevalue} = $value;
 380	    }
 381	    push(@typevalue, "$type:$value");
 382	} elsif (!(/^\s*$/ || /^\s*\#/)) {
 383	    push(@typevalue, $line);
 384	}
 385	if (defined $self_test) {
 386	    push(@self_test_info, {file=>$file, linenr=>$i, line=>$line});
 387	}
 388	$i++;
 389    }
 390    close($maint);
 391}
 392
 393sub find_is_maintainer_file {
 394    my ($file) = $_;
 395    return if ($file !~ m@/MAINTAINERS$@);
 396    $file = $File::Find::name;
 397    return if (! -f $file);
 398    push(@mfiles, $file);
 399}
 400
 401sub find_ignore_git {
 402    return grep { $_ !~ /^\.git$/; } @_;
 403}
 404
 405read_all_maintainer_files();
 406
 407sub read_all_maintainer_files {
 408    my $path = "${lk_path}MAINTAINERS";
 409    if (defined $maintainer_path) {
 410	$path = $maintainer_path;
 411	# Perl Cookbook tilde expansion if necessary
 412	$path =~ s@^~([^/]*)@ $1 ? (getpwnam($1))[7] : ( $ENV{HOME} || $ENV{LOGDIR} || (getpwuid($<))[7])@ex;
 413    }
 414
 415    if (-d $path) {
 416	$path .= '/' if ($path !~ m@/$@);
 417	if ($find_maintainer_files) {
 418	    find( { wanted => \&find_is_maintainer_file,
 419		    preprocess => \&find_ignore_git,
 420		    no_chdir => 1,
 421		}, "$path");
 422	} else {
 423	    opendir(DIR, "$path") or die $!;
 424	    my @files = readdir(DIR);
 425	    closedir(DIR);
 426	    foreach my $file (@files) {
 427		push(@mfiles, "$path$file") if ($file !~ /^\./);
 428	    }
 429	}
 430    } elsif (-f "$path") {
 431	push(@mfiles, "$path");
 432    } else {
 433	die "$P: MAINTAINER file not found '$path'\n";
 434    }
 435    die "$P: No MAINTAINER files found in '$path'\n" if (scalar(@mfiles) == 0);
 436    foreach my $file (@mfiles) {
 437	read_maintainer_file("$file");
 438    }
 439}
 440
 441sub maintainers_in_file {
 442    my ($file) = @_;
 443
 444    return if ($file =~ m@\bMAINTAINERS$@);
 445
 446    if (-f $file && ($email_file_emails || $file =~ /\.yaml$/)) {
 447	open(my $f, '<', $file)
 448	    or die "$P: Can't open $file: $!\n";
 449	my $text = do { local($/) ; <$f> };
 450	close($f);
 451
 452	my @poss_addr = $text =~ m$[\p{L}\"\' \,\.\+-]*\s*[\,]*\s*[\(\<\{]{0,1}[A-Za-z0-9_\.\+-]+\@[A-Za-z0-9\.-]+\.[A-Za-z0-9]+[\)\>\}]{0,1}$g;
 453	push(@file_emails, clean_file_emails(@poss_addr));
 454    }
 455}
 456
 457#
 458# Read mail address map
 459#
 460
 461my $mailmap;
 462
 463read_mailmap();
 464
 465sub read_mailmap {
 466    $mailmap = {
 467	names => {},
 468	addresses => {}
 469    };
 470
 471    return if (!$email_use_mailmap || !(-f "${lk_path}.mailmap"));
 472
 473    open(my $mailmap_file, '<', "${lk_path}.mailmap")
 474	or warn "$P: Can't open .mailmap: $!\n";
 475
 476    while (<$mailmap_file>) {
 477	s/#.*$//; #strip comments
 478	s/^\s+|\s+$//g; #trim
 479
 480	next if (/^\s*$/); #skip empty lines
 481	#entries have one of the following formats:
 482	# name1 <mail1>
 483	# <mail1> <mail2>
 484	# name1 <mail1> <mail2>
 485	# name1 <mail1> name2 <mail2>
 486	# (see man git-shortlog)
 487
 488	if (/^([^<]+)<([^>]+)>$/) {
 489	    my $real_name = $1;
 490	    my $address = $2;
 491
 492	    $real_name =~ s/\s+$//;
 493	    ($real_name, $address) = parse_email("$real_name <$address>");
 494	    $mailmap->{names}->{$address} = $real_name;
 495
 496	} elsif (/^<([^>]+)>\s*<([^>]+)>$/) {
 497	    my $real_address = $1;
 498	    my $wrong_address = $2;
 499
 500	    $mailmap->{addresses}->{$wrong_address} = $real_address;
 501
 502	} elsif (/^(.+)<([^>]+)>\s*<([^>]+)>$/) {
 503	    my $real_name = $1;
 504	    my $real_address = $2;
 505	    my $wrong_address = $3;
 506
 507	    $real_name =~ s/\s+$//;
 508	    ($real_name, $real_address) =
 509		parse_email("$real_name <$real_address>");
 510	    $mailmap->{names}->{$wrong_address} = $real_name;
 511	    $mailmap->{addresses}->{$wrong_address} = $real_address;
 512
 513	} elsif (/^(.+)<([^>]+)>\s*(.+)\s*<([^>]+)>$/) {
 514	    my $real_name = $1;
 515	    my $real_address = $2;
 516	    my $wrong_name = $3;
 517	    my $wrong_address = $4;
 518
 519	    $real_name =~ s/\s+$//;
 520	    ($real_name, $real_address) =
 521		parse_email("$real_name <$real_address>");
 522
 523	    $wrong_name =~ s/\s+$//;
 524	    ($wrong_name, $wrong_address) =
 525		parse_email("$wrong_name <$wrong_address>");
 526
 527	    my $wrong_email = format_email($wrong_name, $wrong_address, 1);
 528	    $mailmap->{names}->{$wrong_email} = $real_name;
 529	    $mailmap->{addresses}->{$wrong_email} = $real_address;
 530	}
 531    }
 532    close($mailmap_file);
 533}
 534
 535## use the filenames on the command line or find the filenames in the patchfiles
 536
 537if (!@ARGV) {
 538    push(@ARGV, "&STDIN");
 539}
 540
 541foreach my $file (@ARGV) {
 542    if ($file ne "&STDIN") {
 543	$file = canonpath($file);
 544	##if $file is a directory and it lacks a trailing slash, add one
 545	if ((-d $file)) {
 546	    $file =~ s@([^/])$@$1/@;
 547	} elsif (!(-f $file)) {
 548	    die "$P: file '${file}' not found\n";
 549	}
 550    }
 551    if ($from_filename && (vcs_exists() && !vcs_file_exists($file))) {
 552	warn "$P: file '$file' not found in version control $!\n";
 553    }
 554    if ($from_filename || ($file ne "&STDIN" && vcs_file_exists($file))) {
 555	$file =~ s/^\Q${cur_path}\E//;	#strip any absolute path
 556	$file =~ s/^\Q${lk_path}\E//;	#or the path to the lk tree
 557	push(@files, $file);
 558	if ($file ne "MAINTAINERS" && -f $file && $keywords && $keywords_in_file) {
 559	    open(my $f, '<', $file)
 560		or die "$P: Can't open $file: $!\n";
 561	    my $text = do { local($/) ; <$f> };
 562	    close($f);
 563	    foreach my $line (keys %keyword_hash) {
 564		if ($text =~ m/$keyword_hash{$line}/x) {
 565		    push(@keyword_tvi, $line);
 
 
 566		}
 567	    }
 568	}
 569    } else {
 570	my $file_cnt = @files;
 571	my $lastfile;
 572
 573	open(my $patch, "< $file")
 574	    or die "$P: Can't open $file: $!\n";
 575
 576	# We can check arbitrary information before the patch
 577	# like the commit message, mail headers, etc...
 578	# This allows us to match arbitrary keywords against any part
 579	# of a git format-patch generated file (subject tags, etc...)
 580
 581	my $patch_prefix = "";			#Parsing the intro
 582
 583	while (<$patch>) {
 584	    my $patch_line = $_;
 585	    if (m/^ mode change [0-7]+ => [0-7]+ (\S+)\s*$/) {
 586		my $filename = $1;
 587		push(@files, $filename);
 588	    } elsif (m/^rename (?:from|to) (\S+)\s*$/) {
 589		my $filename = $1;
 590		push(@files, $filename);
 591	    } elsif (m/^diff --git a\/(\S+) b\/(\S+)\s*$/) {
 592		my $filename1 = $1;
 593		my $filename2 = $2;
 594		push(@files, $filename1);
 595		push(@files, $filename2);
 596	    } elsif (m/^Fixes:\s+([0-9a-fA-F]{6,40})/) {
 597		push(@fixes, $1) if ($email_fixes);
 598	    } elsif (m/^\+\+\+\s+(\S+)/ or m/^---\s+(\S+)/) {
 599		my $filename = $1;
 600		$filename =~ s@^[^/]*/@@;
 601		$filename =~ s@\n@@;
 602		$lastfile = $filename;
 603		push(@files, $filename);
 604		$patch_prefix = "^[+-].*";	#Now parsing the actual patch
 605	    } elsif (m/^\@\@ -(\d+),(\d+)/) {
 606		if ($email_git_blame) {
 607		    push(@range, "$lastfile:$1:$2");
 608		}
 609	    } elsif ($keywords) {
 610		foreach my $line (keys %keyword_hash) {
 611		    if ($patch_line =~ m/${patch_prefix}$keyword_hash{$line}/x) {
 612			push(@keyword_tvi, $line);
 613		    }
 614		}
 615	    }
 616	}
 617	close($patch);
 618
 619	if ($file_cnt == @files) {
 620	    warn "$P: file '${file}' doesn't appear to be a patch.  "
 621		. "Add -f to options?\n";
 622	}
 623	@files = sort_and_uniq(@files);
 624    }
 625}
 626
 627@file_emails = uniq(@file_emails);
 628@fixes = uniq(@fixes);
 629
 630my %email_hash_name;
 631my %email_hash_address;
 632my @email_to = ();
 633my %hash_list_to;
 634my @list_to = ();
 635my @scm = ();
 636my @web = ();
 637my @bug = ();
 638my @subsystem = ();
 639my @status = ();
 640my %deduplicate_name_hash = ();
 641my %deduplicate_address_hash = ();
 642
 643my @maintainers = get_maintainers();
 644if (@maintainers) {
 645    @maintainers = merge_email(@maintainers);
 646    output(@maintainers);
 647}
 648
 649if ($scm) {
 650    @scm = uniq(@scm);
 651    output(@scm);
 652}
 653
 654if ($status) {
 655    @status = uniq(@status);
 656    output(@status);
 657}
 658
 659if ($subsystem) {
 660    @subsystem = uniq(@subsystem);
 661    output(@subsystem);
 662}
 663
 664if ($web) {
 665    @web = uniq(@web);
 666    output(@web);
 667}
 668
 669if ($bug) {
 670    @bug = uniq(@bug);
 671    output(@bug);
 672}
 673
 674exit($exit);
 675
 676sub self_test {
 677    my @lsfiles = ();
 678    my @good_links = ();
 679    my @bad_links = ();
 680    my @section_headers = ();
 681    my $index = 0;
 682
 683    @lsfiles = vcs_list_files($lk_path);
 684
 685    for my $x (@self_test_info) {
 686	$index++;
 687
 688	## Section header duplication and missing section content
 689	if (($self_test eq "" || $self_test =~ /\bsections\b/) &&
 690	    $x->{line} =~ /^\S[^:]/ &&
 691	    defined $self_test_info[$index] &&
 692	    $self_test_info[$index]->{line} =~ /^([A-Z]):\s*\S/) {
 693	    my $has_S = 0;
 694	    my $has_F = 0;
 695	    my $has_ML = 0;
 696	    my $status = "";
 697	    if (grep(m@^\Q$x->{line}\E@, @section_headers)) {
 698		print("$x->{file}:$x->{linenr}: warning: duplicate section header\t$x->{line}\n");
 699	    } else {
 700		push(@section_headers, $x->{line});
 701	    }
 702	    my $nextline = $index;
 703	    while (defined $self_test_info[$nextline] &&
 704		   $self_test_info[$nextline]->{line} =~ /^([A-Z]):\s*(\S.*)/) {
 705		my $type = $1;
 706		my $value = $2;
 707		if ($type eq "S") {
 708		    $has_S = 1;
 709		    $status = $value;
 710		} elsif ($type eq "F" || $type eq "N") {
 711		    $has_F = 1;
 712		} elsif ($type eq "M" || $type eq "R" || $type eq "L") {
 713		    $has_ML = 1;
 714		}
 715		$nextline++;
 716	    }
 717	    if (!$has_ML && $status !~ /orphan|obsolete/i) {
 718		print("$x->{file}:$x->{linenr}: warning: section without email address\t$x->{line}\n");
 719	    }
 720	    if (!$has_S) {
 721		print("$x->{file}:$x->{linenr}: warning: section without status \t$x->{line}\n");
 722	    }
 723	    if (!$has_F) {
 724		print("$x->{file}:$x->{linenr}: warning: section without file pattern\t$x->{line}\n");
 725	    }
 726	}
 727
 728	next if ($x->{line} !~ /^([A-Z]):\s*(.*)/);
 729
 730	my $type = $1;
 731	my $value = $2;
 732
 733	## Filename pattern matching
 734	if (($type eq "F" || $type eq "X") &&
 735	    ($self_test eq "" || $self_test =~ /\bpatterns\b/)) {
 736	    $value =~ s@\.@\\\.@g;       ##Convert . to \.
 737	    $value =~ s/\*/\.\*/g;       ##Convert * to .*
 738	    $value =~ s/\?/\./g;         ##Convert ? to .
 739	    ##if pattern is a directory and it lacks a trailing slash, add one
 740	    if ((-d $value)) {
 741		$value =~ s@([^/])$@$1/@;
 742	    }
 743	    if (!grep(m@^$value@, @lsfiles)) {
 744		print("$x->{file}:$x->{linenr}: warning: no file matches\t$x->{line}\n");
 745	    }
 746
 747	## Link reachability
 748	} elsif (($type eq "W" || $type eq "Q" || $type eq "B") &&
 749		 $value =~ /^https?:/ &&
 750		 ($self_test eq "" || $self_test =~ /\blinks\b/)) {
 751	    next if (grep(m@^\Q$value\E$@, @good_links));
 752	    my $isbad = 0;
 753	    if (grep(m@^\Q$value\E$@, @bad_links)) {
 754	        $isbad = 1;
 755	    } else {
 756		my $output = `wget --spider -q --no-check-certificate --timeout 10 --tries 1 $value`;
 757		if ($? == 0) {
 758		    push(@good_links, $value);
 759		} else {
 760		    push(@bad_links, $value);
 761		    $isbad = 1;
 762		}
 763	    }
 764	    if ($isbad) {
 765	        print("$x->{file}:$x->{linenr}: warning: possible bad link\t$x->{line}\n");
 766	    }
 767
 768	## SCM reachability
 769	} elsif ($type eq "T" &&
 770		 ($self_test eq "" || $self_test =~ /\bscm\b/)) {
 771	    next if (grep(m@^\Q$value\E$@, @good_links));
 772	    my $isbad = 0;
 773	    if (grep(m@^\Q$value\E$@, @bad_links)) {
 774	        $isbad = 1;
 775            } elsif ($value !~ /^(?:git|quilt|hg)\s+\S/) {
 776		print("$x->{file}:$x->{linenr}: warning: malformed entry\t$x->{line}\n");
 777	    } elsif ($value =~ /^git\s+(\S+)(\s+([^\(]+\S+))?/) {
 778		my $url = $1;
 779		my $branch = "";
 780		$branch = $3 if $3;
 781		my $output = `git ls-remote --exit-code -h "$url" $branch > /dev/null 2>&1`;
 782		if ($? == 0) {
 783		    push(@good_links, $value);
 784		} else {
 785		    push(@bad_links, $value);
 786		    $isbad = 1;
 787		}
 788	    } elsif ($value =~ /^(?:quilt|hg)\s+(https?:\S+)/) {
 789		my $url = $1;
 790		my $output = `wget --spider -q --no-check-certificate --timeout 10 --tries 1 $url`;
 791		if ($? == 0) {
 792		    push(@good_links, $value);
 793		} else {
 794		    push(@bad_links, $value);
 795		    $isbad = 1;
 796		}
 797	    }
 798	    if ($isbad) {
 799		print("$x->{file}:$x->{linenr}: warning: possible bad link\t$x->{line}\n");
 800	    }
 801	}
 802    }
 803}
 804
 805sub ignore_email_address {
 806    my ($address) = @_;
 807
 808    foreach my $ignore (@ignore_emails) {
 809	return 1 if ($ignore eq $address);
 810    }
 811
 812    return 0;
 813}
 814
 815sub range_is_maintained {
 816    my ($start, $end) = @_;
 817
 818    for (my $i = $start; $i < $end; $i++) {
 819	my $line = $typevalue[$i];
 820	if ($line =~ m/^([A-Z]):\s*(.*)/) {
 821	    my $type = $1;
 822	    my $value = $2;
 823	    if ($type eq 'S') {
 824		if ($value =~ /(maintain|support)/i) {
 825		    return 1;
 826		}
 827	    }
 828	}
 829    }
 830    return 0;
 831}
 832
 833sub range_has_maintainer {
 834    my ($start, $end) = @_;
 835
 836    for (my $i = $start; $i < $end; $i++) {
 837	my $line = $typevalue[$i];
 838	if ($line =~ m/^([A-Z]):\s*(.*)/) {
 839	    my $type = $1;
 840	    my $value = $2;
 841	    if ($type eq 'M') {
 842		return 1;
 843	    }
 844	}
 845    }
 846    return 0;
 847}
 848
 849sub get_maintainers {
 850    %email_hash_name = ();
 851    %email_hash_address = ();
 852    %commit_author_hash = ();
 853    %commit_signer_hash = ();
 854    @email_to = ();
 855    %hash_list_to = ();
 856    @list_to = ();
 857    @scm = ();
 858    @web = ();
 859    @bug = ();
 860    @subsystem = ();
 861    @status = ();
 862    %deduplicate_name_hash = ();
 863    %deduplicate_address_hash = ();
 864    if ($email_git_all_signature_types) {
 865	$signature_pattern = "(.+?)[Bb][Yy]:";
 866    } else {
 867	$signature_pattern = "\(" . join("|", @signature_tags) . "\)";
 868    }
 869
 870    # Find responsible parties
 871
 872    my %exact_pattern_match_hash = ();
 873
 874    foreach my $file (@files) {
 875
 876	my %hash;
 877	my $tvi = find_first_section();
 878	while ($tvi < @typevalue) {
 879	    my $start = find_starting_index($tvi);
 880	    my $end = find_ending_index($tvi);
 881	    my $exclude = 0;
 882	    my $i;
 883
 884	    #Do not match excluded file patterns
 885
 886	    for ($i = $start; $i < $end; $i++) {
 887		my $line = $typevalue[$i];
 888		if ($line =~ m/^([A-Z]):\s*(.*)/) {
 889		    my $type = $1;
 890		    my $value = $2;
 891		    if ($type eq 'X') {
 892			if (file_match_pattern($file, $value)) {
 893			    $exclude = 1;
 894			    last;
 895			}
 896		    }
 897		}
 898	    }
 899
 900	    if (!$exclude) {
 901		for ($i = $start; $i < $end; $i++) {
 902		    my $line = $typevalue[$i];
 903		    if ($line =~ m/^([A-Z]):\s*(.*)/) {
 904			my $type = $1;
 905			my $value = $2;
 906			if ($type eq 'F') {
 907			    if (file_match_pattern($file, $value)) {
 908				my $value_pd = ($value =~ tr@/@@);
 909				my $file_pd = ($file  =~ tr@/@@);
 910				$value_pd++ if (substr($value,-1,1) ne "/");
 911				$value_pd = -1 if ($value =~ /^\.\*/);
 912				if ($value_pd >= $file_pd &&
 913				    range_is_maintained($start, $end) &&
 914				    range_has_maintainer($start, $end)) {
 915				    $exact_pattern_match_hash{$file} = 1;
 916				}
 917				if ($pattern_depth == 0 ||
 918				    (($file_pd - $value_pd) < $pattern_depth)) {
 919				    $hash{$tvi} = $value_pd;
 920				}
 921			    }
 922			} elsif ($type eq 'N') {
 923			    if ($file =~ m/$value/x) {
 924				$hash{$tvi} = 0;
 925			    }
 926			}
 927		    }
 928		}
 929	    }
 930	    $tvi = $end + 1;
 931	}
 932
 933	foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {
 934	    add_categories($line, "");
 935	    if ($sections) {
 936		my $i;
 937		my $start = find_starting_index($line);
 938		my $end = find_ending_index($line);
 939		for ($i = $start; $i < $end; $i++) {
 940		    my $line = $typevalue[$i];
 941		    if ($line =~ /^[FX]:/) {		##Restore file patterns
 942			$line =~ s/([^\\])\.([^\*])/$1\?$2/g;
 943			$line =~ s/([^\\])\.$/$1\?/g;	##Convert . back to ?
 944			$line =~ s/\\\./\./g;       	##Convert \. to .
 945			$line =~ s/\.\*/\*/g;       	##Convert .* to *
 946		    }
 947		    my $count = $line =~ s/^([A-Z]):/$1:\t/g;
 948		    if ($letters eq "" || (!$count || $letters =~ /$1/i)) {
 949			print("$line\n");
 950		    }
 951		}
 952		print("\n");
 953	    }
 954	}
 955
 956	maintainers_in_file($file);
 957    }
 958
 959    if ($keywords) {
 960	@keyword_tvi = sort_and_uniq(@keyword_tvi);
 961	foreach my $line (@keyword_tvi) {
 962	    add_categories($line, ":Keyword:$keyword_hash{$line}");
 963	}
 964    }
 965
 966    foreach my $email (@email_to, @list_to) {
 967	$email->[0] = deduplicate_email($email->[0]);
 968    }
 969
 970    foreach my $file (@files) {
 971	if ($email &&
 972	    ($email_git ||
 973	     ($email_git_fallback &&
 974	      $file !~ /MAINTAINERS$/ &&
 975	      !$exact_pattern_match_hash{$file}))) {
 976	    vcs_file_signoffs($file);
 977	}
 978	if ($email && $email_git_blame) {
 979	    vcs_file_blame($file);
 980	}
 981    }
 982
 983    if ($email) {
 984	foreach my $chief (@penguin_chief) {
 985	    if ($chief =~ m/^(.*):(.*)/) {
 986		my $email_address;
 987
 988		$email_address = format_email($1, $2, $email_usename);
 989		if ($email_git_penguin_chiefs) {
 990		    push(@email_to, [$email_address, 'chief penguin']);
 991		} else {
 992		    @email_to = grep($_->[0] !~ /${email_address}/, @email_to);
 993		}
 994	    }
 995	}
 996
 997	foreach my $email (@file_emails) {
 998	    $email = mailmap_email($email);
 999	    my ($name, $address) = parse_email($email);
1000
1001	    my $tmp_email = format_email($name, $address, $email_usename);
1002	    push_email_address($tmp_email, '');
1003	    add_role($tmp_email, 'in file');
1004	}
1005    }
1006
1007    foreach my $fix (@fixes) {
1008	vcs_add_commit_signers($fix, "blamed_fixes");
1009    }
1010
1011    my @to = ();
1012    if ($email || $email_list) {
1013	if ($email) {
1014	    @to = (@to, @email_to);
1015	}
1016	if ($email_list) {
1017	    @to = (@to, @list_to);
1018	}
1019    }
1020
1021    if ($interactive) {
1022	@to = interactive_get_maintainers(\@to);
1023    }
1024
1025    return @to;
1026}
1027
1028sub file_match_pattern {
1029    my ($file, $pattern) = @_;
1030    if (substr($pattern, -1) eq "/") {
1031	if ($file =~ m@^$pattern@) {
1032	    return 1;
1033	}
1034    } else {
1035	if ($file =~ m@^$pattern@) {
1036	    my $s1 = ($file =~ tr@/@@);
1037	    my $s2 = ($pattern =~ tr@/@@);
1038	    if ($s1 == $s2) {
1039		return 1;
1040	    }
1041	}
1042    }
1043    return 0;
1044}
1045
1046sub usage {
1047    print <<EOT;
1048usage: $P [options] patchfile
1049       $P [options] -f file|directory
1050version: $V
1051
1052MAINTAINER field selection options:
1053  --email => print email address(es) if any
1054    --git => include recent git \*-by: signers
1055    --git-all-signature-types => include signers regardless of signature type
1056        or use only ${signature_pattern} signers (default: $email_git_all_signature_types)
1057    --git-fallback => use git when no exact MAINTAINERS pattern (default: $email_git_fallback)
1058    --git-chief-penguins => include ${penguin_chiefs}
1059    --git-min-signatures => number of signatures required (default: $email_git_min_signatures)
1060    --git-max-maintainers => maximum maintainers to add (default: $email_git_max_maintainers)
1061    --git-min-percent => minimum percentage of commits required (default: $email_git_min_percent)
1062    --git-blame => use git blame to find modified commits for patch or file
1063    --git-blame-signatures => when used with --git-blame, also include all commit signers
1064    --git-since => git history to use (default: $email_git_since)
1065    --hg-since => hg history to use (default: $email_hg_since)
1066    --interactive => display a menu (mostly useful if used with the --git option)
1067    --m => include maintainer(s) if any
1068    --r => include reviewer(s) if any
1069    --n => include name 'Full Name <addr\@domain.tld>'
1070    --l => include list(s) if any
1071    --moderated => include moderated lists(s) if any (default: true)
1072    --s => include subscriber only list(s) if any (default: false)
1073    --remove-duplicates => minimize duplicate email names/addresses
1074    --roles => show roles (status:subsystem, git-signer, list, etc...)
1075    --rolestats => show roles and statistics (commits/total_commits, %)
1076    --file-emails => add email addresses found in -f file (default: 0 (off))
1077    --fixes => for patches, add signatures of commits with 'Fixes: <commit>' (default: 1 (on))
1078  --scm => print SCM tree(s) if any
1079  --status => print status if any
1080  --subsystem => print subsystem name if any
1081  --web => print website(s) if any
1082  --bug => print bug reporting info if any
1083
1084Output type options:
1085  --separator [, ] => separator for multiple entries on 1 line
1086    using --separator also sets --nomultiline if --separator is not [, ]
1087  --multiline => print 1 entry per line
1088
1089Other options:
1090  --pattern-depth => Number of pattern directory traversals (default: 0 (all))
1091  --keywords => scan patch for keywords (default: $keywords)
1092  --keywords-in-file => scan file for keywords (default: $keywords_in_file)
1093  --sections => print all of the subsystem sections with pattern matches
1094  --letters => print all matching 'letter' types from all matching sections
1095  --mailmap => use .mailmap file (default: $email_use_mailmap)
1096  --no-tree => run without a kernel tree
1097  --self-test => show potential issues with MAINTAINERS file content
1098  --version => show version
1099  --help => show this help information
1100
1101Default options:
1102  [--email --tree --nogit --git-fallback --m --r --n --l --multiline
1103   --pattern-depth=0 --remove-duplicates --rolestats --keywords]
1104
1105Notes:
1106  Using "-f directory" may give unexpected results:
1107      Used with "--git", git signators for _all_ files in and below
1108          directory are examined as git recurses directories.
1109          Any specified X: (exclude) pattern matches are _not_ ignored.
1110      Used with "--nogit", directory is used as a pattern match,
1111          no individual file within the directory or subdirectory
1112          is matched.
1113      Used with "--git-blame", does not iterate all files in directory
1114  Using "--git-blame" is slow and may add old committers and authors
1115      that are no longer active maintainers to the output.
1116  Using "--roles" or "--rolestats" with git send-email --cc-cmd or any
1117      other automated tools that expect only ["name"] <email address>
1118      may not work because of additional output after <email address>.
1119  Using "--rolestats" and "--git-blame" shows the #/total=% commits,
1120      not the percentage of the entire file authored.  # of commits is
1121      not a good measure of amount of code authored.  1 major commit may
1122      contain a thousand lines, 5 trivial commits may modify a single line.
1123  If git is not installed, but mercurial (hg) is installed and an .hg
1124      repository exists, the following options apply to mercurial:
1125          --git,
1126          --git-min-signatures, --git-max-maintainers, --git-min-percent, and
1127          --git-blame
1128      Use --hg-since not --git-since to control date selection
1129  File ".get_maintainer.conf", if it exists in the linux kernel source root
1130      directory, can change whatever get_maintainer defaults are desired.
1131      Entries in this file can be any command line argument.
1132      This file is prepended to any additional command line arguments.
1133      Multiple lines and # comments are allowed.
1134  Most options have both positive and negative forms.
1135      The negative forms for --<foo> are --no<foo> and --no-<foo>.
1136
1137EOT
1138}
1139
1140sub top_of_kernel_tree {
1141    my ($lk_path) = @_;
1142
1143    if ($lk_path ne "" && substr($lk_path,length($lk_path)-1,1) ne "/") {
1144	$lk_path .= "/";
1145    }
1146    if (   (-f "${lk_path}COPYING")
1147	&& (-f "${lk_path}CREDITS")
1148	&& (-f "${lk_path}Kbuild")
1149	&& (-e "${lk_path}MAINTAINERS")
1150	&& (-f "${lk_path}Makefile")
1151	&& (-f "${lk_path}README")
1152	&& (-d "${lk_path}Documentation")
1153	&& (-d "${lk_path}arch")
1154	&& (-d "${lk_path}include")
1155	&& (-d "${lk_path}drivers")
1156	&& (-d "${lk_path}fs")
1157	&& (-d "${lk_path}init")
1158	&& (-d "${lk_path}ipc")
1159	&& (-d "${lk_path}kernel")
1160	&& (-d "${lk_path}lib")
1161	&& (-d "${lk_path}scripts")) {
1162	return 1;
1163    }
1164    return 0;
1165}
1166
1167sub escape_name {
1168    my ($name) = @_;
1169
1170    if ($name =~ /[^\w \-]/ai) {  	 ##has "must quote" chars
1171	$name =~ s/(?<!\\)"/\\"/g;       ##escape quotes
1172	$name = "\"$name\"";
1173    }
1174
1175    return $name;
1176}
1177
1178sub parse_email {
1179    my ($formatted_email) = @_;
1180
1181    my $name = "";
1182    my $address = "";
1183
1184    if ($formatted_email =~ /^([^<]+)<(.+\@.*)>.*$/) {
1185	$name = $1;
1186	$address = $2;
1187    } elsif ($formatted_email =~ /^\s*<(.+\@\S*)>.*$/) {
1188	$address = $1;
1189    } elsif ($formatted_email =~ /^(.+\@\S*).*$/) {
1190	$address = $1;
1191    }
1192
1193    $name =~ s/^\s+|\s+$//g;
1194    $name =~ s/^\"|\"$//g;
1195    $name = escape_name($name);
1196    $address =~ s/^\s+|\s+$//g;
1197
 
 
 
 
 
1198    return ($name, $address);
1199}
1200
1201sub format_email {
1202    my ($name, $address, $usename) = @_;
1203
1204    my $formatted_email;
1205
1206    $name =~ s/^\s+|\s+$//g;
1207    $name =~ s/^\"|\"$//g;
1208    $name = escape_name($name);
1209    $address =~ s/^\s+|\s+$//g;
1210
 
 
 
 
 
1211    if ($usename) {
1212	if ("$name" eq "") {
1213	    $formatted_email = "$address";
1214	} else {
1215	    $formatted_email = "$name <$address>";
1216	}
1217    } else {
1218	$formatted_email = $address;
1219    }
1220
1221    return $formatted_email;
1222}
1223
1224sub find_first_section {
1225    my $index = 0;
1226
1227    while ($index < @typevalue) {
1228	my $tv = $typevalue[$index];
1229	if (($tv =~ m/^([A-Z]):\s*(.*)/)) {
1230	    last;
1231	}
1232	$index++;
1233    }
1234
1235    return $index;
1236}
1237
1238sub find_starting_index {
1239    my ($index) = @_;
1240
1241    while ($index > 0) {
1242	my $tv = $typevalue[$index];
1243	if (!($tv =~ m/^([A-Z]):\s*(.*)/)) {
1244	    last;
1245	}
1246	$index--;
1247    }
1248
1249    return $index;
1250}
1251
1252sub find_ending_index {
1253    my ($index) = @_;
1254
1255    while ($index < @typevalue) {
1256	my $tv = $typevalue[$index];
1257	if (!($tv =~ m/^([A-Z]):\s*(.*)/)) {
1258	    last;
1259	}
1260	$index++;
1261    }
1262
1263    return $index;
1264}
1265
1266sub get_subsystem_name {
1267    my ($index) = @_;
1268
1269    my $start = find_starting_index($index);
1270
1271    my $subsystem = $typevalue[$start];
1272    if ($output_section_maxlen && length($subsystem) > $output_section_maxlen) {
1273	$subsystem = substr($subsystem, 0, $output_section_maxlen - 3);
1274	$subsystem =~ s/\s*$//;
1275	$subsystem = $subsystem . "...";
1276    }
1277    return $subsystem;
1278}
1279
1280sub get_maintainer_role {
1281    my ($index) = @_;
1282
1283    my $i;
1284    my $start = find_starting_index($index);
1285    my $end = find_ending_index($index);
1286
1287    my $role = "unknown";
1288    my $subsystem = get_subsystem_name($index);
1289
1290    for ($i = $start + 1; $i < $end; $i++) {
1291	my $tv = $typevalue[$i];
1292	if ($tv =~ m/^([A-Z]):\s*(.*)/) {
1293	    my $ptype = $1;
1294	    my $pvalue = $2;
1295	    if ($ptype eq "S") {
1296		$role = $pvalue;
1297	    }
1298	}
1299    }
1300
1301    $role = lc($role);
1302    if      ($role eq "supported") {
1303	$role = "supporter";
1304    } elsif ($role eq "maintained") {
1305	$role = "maintainer";
1306    } elsif ($role eq "odd fixes") {
1307	$role = "odd fixer";
1308    } elsif ($role eq "orphan") {
1309	$role = "orphan minder";
1310    } elsif ($role eq "obsolete") {
1311	$role = "obsolete minder";
1312    } elsif ($role eq "buried alive in reporters") {
1313	$role = "chief penguin";
1314    }
1315
1316    return $role . ":" . $subsystem;
1317}
1318
1319sub get_list_role {
1320    my ($index) = @_;
1321
1322    my $subsystem = get_subsystem_name($index);
1323
1324    if ($subsystem eq "THE REST") {
1325	$subsystem = "";
1326    }
1327
1328    return $subsystem;
1329}
1330
1331sub add_categories {
1332    my ($index, $suffix) = @_;
1333
1334    my $i;
1335    my $start = find_starting_index($index);
1336    my $end = find_ending_index($index);
1337
1338    push(@subsystem, $typevalue[$start]);
1339
1340    for ($i = $start + 1; $i < $end; $i++) {
1341	my $tv = $typevalue[$i];
1342	if ($tv =~ m/^([A-Z]):\s*(.*)/) {
1343	    my $ptype = $1;
1344	    my $pvalue = $2;
1345	    if ($ptype eq "L") {
1346		my $list_address = $pvalue;
1347		my $list_additional = "";
1348		my $list_role = get_list_role($i);
1349
1350		if ($list_role ne "") {
1351		    $list_role = ":" . $list_role;
1352		}
1353		if ($list_address =~ m/([^\s]+)\s+(.*)$/) {
1354		    $list_address = $1;
1355		    $list_additional = $2;
1356		}
1357		if ($list_additional =~ m/subscribers-only/) {
1358		    if ($email_subscriber_list) {
1359			if (!$hash_list_to{lc($list_address)}) {
1360			    $hash_list_to{lc($list_address)} = 1;
1361			    push(@list_to, [$list_address,
1362					    "subscriber list${list_role}" . $suffix]);
1363			}
1364		    }
1365		} else {
1366		    if ($email_list) {
1367			if (!$hash_list_to{lc($list_address)}) {
1368			    if ($list_additional =~ m/moderated/) {
1369				if ($email_moderated_list) {
1370				    $hash_list_to{lc($list_address)} = 1;
1371				    push(@list_to, [$list_address,
1372						    "moderated list${list_role}" . $suffix]);
1373				}
1374			    } else {
1375				$hash_list_to{lc($list_address)} = 1;
1376				push(@list_to, [$list_address,
1377						"open list${list_role}" . $suffix]);
1378			    }
1379			}
1380		    }
1381		}
1382	    } elsif ($ptype eq "M") {
1383		if ($email_maintainer) {
1384		    my $role = get_maintainer_role($i);
1385		    push_email_addresses($pvalue, $role . $suffix);
1386		}
1387	    } elsif ($ptype eq "R") {
1388		if ($email_reviewer) {
1389		    my $subsystem = get_subsystem_name($i);
1390		    push_email_addresses($pvalue, "reviewer:$subsystem" . $suffix);
1391		}
1392	    } elsif ($ptype eq "T") {
1393		push(@scm, $pvalue . $suffix);
1394	    } elsif ($ptype eq "W") {
1395		push(@web, $pvalue . $suffix);
1396	    } elsif ($ptype eq "B") {
1397		push(@bug, $pvalue . $suffix);
1398	    } elsif ($ptype eq "S") {
1399		push(@status, $pvalue . $suffix);
1400	    }
1401	}
1402    }
1403}
1404
1405sub email_inuse {
1406    my ($name, $address) = @_;
1407
1408    return 1 if (($name eq "") && ($address eq ""));
1409    return 1 if (($name ne "") && exists($email_hash_name{lc($name)}));
1410    return 1 if (($address ne "") && exists($email_hash_address{lc($address)}));
1411
1412    return 0;
1413}
1414
1415sub push_email_address {
1416    my ($line, $role) = @_;
1417
1418    my ($name, $address) = parse_email($line);
1419
1420    if ($address eq "") {
1421	return 0;
1422    }
1423
1424    if (!$email_remove_duplicates) {
1425	push(@email_to, [format_email($name, $address, $email_usename), $role]);
1426    } elsif (!email_inuse($name, $address)) {
1427	push(@email_to, [format_email($name, $address, $email_usename), $role]);
1428	$email_hash_name{lc($name)}++ if ($name ne "");
1429	$email_hash_address{lc($address)}++;
1430    }
1431
1432    return 1;
1433}
1434
1435sub push_email_addresses {
1436    my ($address, $role) = @_;
1437
1438    my @address_list = ();
1439
1440    if (rfc822_valid($address)) {
1441	push_email_address($address, $role);
1442    } elsif (@address_list = rfc822_validlist($address)) {
1443	my $array_count = shift(@address_list);
1444	while (my $entry = shift(@address_list)) {
1445	    push_email_address($entry, $role);
1446	}
1447    } else {
1448	if (!push_email_address($address, $role)) {
1449	    warn("Invalid MAINTAINERS address: '" . $address . "'\n");
1450	}
1451    }
1452}
1453
1454sub add_role {
1455    my ($line, $role) = @_;
1456
1457    my ($name, $address) = parse_email($line);
1458    my $email = format_email($name, $address, $email_usename);
1459
1460    foreach my $entry (@email_to) {
1461	if ($email_remove_duplicates) {
1462	    my ($entry_name, $entry_address) = parse_email($entry->[0]);
1463	    if (($name eq $entry_name || $address eq $entry_address)
1464		&& ($role eq "" || !($entry->[1] =~ m/$role/))
1465	    ) {
1466		if ($entry->[1] eq "") {
1467		    $entry->[1] = "$role";
1468		} else {
1469		    $entry->[1] = "$entry->[1],$role";
1470		}
1471	    }
1472	} else {
1473	    if ($email eq $entry->[0]
1474		&& ($role eq "" || !($entry->[1] =~ m/$role/))
1475	    ) {
1476		if ($entry->[1] eq "") {
1477		    $entry->[1] = "$role";
1478		} else {
1479		    $entry->[1] = "$entry->[1],$role";
1480		}
1481	    }
1482	}
1483    }
1484}
1485
1486sub which {
1487    my ($bin) = @_;
1488
1489    foreach my $path (split(/:/, $ENV{PATH})) {
1490	if (-e "$path/$bin") {
1491	    return "$path/$bin";
1492	}
1493    }
1494
1495    return "";
1496}
1497
1498sub which_conf {
1499    my ($conf) = @_;
1500
1501    foreach my $path (split(/:/, ".:$ENV{HOME}:.scripts")) {
1502	if (-e "$path/$conf") {
1503	    return "$path/$conf";
1504	}
1505    }
1506
1507    return "";
1508}
1509
1510sub mailmap_email {
1511    my ($line) = @_;
1512
1513    my ($name, $address) = parse_email($line);
1514    my $email = format_email($name, $address, 1);
1515    my $real_name = $name;
1516    my $real_address = $address;
1517
1518    if (exists $mailmap->{names}->{$email} ||
1519	exists $mailmap->{addresses}->{$email}) {
1520	if (exists $mailmap->{names}->{$email}) {
1521	    $real_name = $mailmap->{names}->{$email};
1522	}
1523	if (exists $mailmap->{addresses}->{$email}) {
1524	    $real_address = $mailmap->{addresses}->{$email};
1525	}
1526    } else {
1527	if (exists $mailmap->{names}->{$address}) {
1528	    $real_name = $mailmap->{names}->{$address};
1529	}
1530	if (exists $mailmap->{addresses}->{$address}) {
1531	    $real_address = $mailmap->{addresses}->{$address};
1532	}
1533    }
1534    return format_email($real_name, $real_address, 1);
1535}
1536
1537sub mailmap {
1538    my (@addresses) = @_;
1539
1540    my @mapped_emails = ();
1541    foreach my $line (@addresses) {
1542	push(@mapped_emails, mailmap_email($line));
1543    }
1544    merge_by_realname(@mapped_emails) if ($email_use_mailmap);
1545    return @mapped_emails;
1546}
1547
1548sub merge_by_realname {
1549    my %address_map;
1550    my (@emails) = @_;
1551
1552    foreach my $email (@emails) {
1553	my ($name, $address) = parse_email($email);
1554	if (exists $address_map{$name}) {
1555	    $address = $address_map{$name};
1556	    $email = format_email($name, $address, 1);
1557	} else {
1558	    $address_map{$name} = $address;
1559	}
1560    }
1561}
1562
1563sub git_execute_cmd {
1564    my ($cmd) = @_;
1565    my @lines = ();
1566
1567    my $output = `$cmd`;
1568    $output =~ s/^\s*//gm;
1569    @lines = split("\n", $output);
1570
1571    return @lines;
1572}
1573
1574sub hg_execute_cmd {
1575    my ($cmd) = @_;
1576    my @lines = ();
1577
1578    my $output = `$cmd`;
1579    @lines = split("\n", $output);
1580
1581    return @lines;
1582}
1583
1584sub extract_formatted_signatures {
1585    my (@signature_lines) = @_;
1586
1587    my @type = @signature_lines;
1588
1589    s/\s*(.*):.*/$1/ for (@type);
1590
1591    # cut -f2- -d":"
1592    s/\s*.*:\s*(.+)\s*/$1/ for (@signature_lines);
1593
1594## Reformat email addresses (with names) to avoid badly written signatures
1595
1596    foreach my $signer (@signature_lines) {
1597	$signer = deduplicate_email($signer);
1598    }
1599
1600    return (\@type, \@signature_lines);
1601}
1602
1603sub vcs_find_signers {
1604    my ($cmd, $file) = @_;
1605    my $commits;
1606    my @lines = ();
1607    my @signatures = ();
1608    my @authors = ();
1609    my @stats = ();
1610
1611    @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
1612
1613    my $pattern = $VCS_cmds{"commit_pattern"};
1614    my $author_pattern = $VCS_cmds{"author_pattern"};
1615    my $stat_pattern = $VCS_cmds{"stat_pattern"};
1616
1617    $stat_pattern =~ s/(\$\w+)/$1/eeg;		#interpolate $stat_pattern
1618
1619    $commits = grep(/$pattern/, @lines);	# of commits
1620
1621    @authors = grep(/$author_pattern/, @lines);
1622    @signatures = grep(/^[ \t]*${signature_pattern}.*\@.*$/, @lines);
1623    @stats = grep(/$stat_pattern/, @lines);
1624
1625#    print("stats: <@stats>\n");
1626
1627    return (0, \@signatures, \@authors, \@stats) if !@signatures;
1628
1629    save_commits_by_author(@lines) if ($interactive);
1630    save_commits_by_signer(@lines) if ($interactive);
1631
1632    if (!$email_git_penguin_chiefs) {
1633	@signatures = grep(!/${penguin_chiefs}/i, @signatures);
1634    }
1635
1636    my ($author_ref, $authors_ref) = extract_formatted_signatures(@authors);
1637    my ($types_ref, $signers_ref) = extract_formatted_signatures(@signatures);
1638
1639    return ($commits, $signers_ref, $authors_ref, \@stats);
1640}
1641
1642sub vcs_find_author {
1643    my ($cmd) = @_;
1644    my @lines = ();
1645
1646    @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
1647
1648    if (!$email_git_penguin_chiefs) {
1649	@lines = grep(!/${penguin_chiefs}/i, @lines);
1650    }
1651
1652    return @lines if !@lines;
1653
1654    my @authors = ();
1655    foreach my $line (@lines) {
1656	if ($line =~ m/$VCS_cmds{"author_pattern"}/) {
1657	    my $author = $1;
1658	    my ($name, $address) = parse_email($author);
1659	    $author = format_email($name, $address, 1);
1660	    push(@authors, $author);
1661	}
1662    }
1663
1664    save_commits_by_author(@lines) if ($interactive);
1665    save_commits_by_signer(@lines) if ($interactive);
1666
1667    return @authors;
1668}
1669
1670sub vcs_save_commits {
1671    my ($cmd) = @_;
1672    my @lines = ();
1673    my @commits = ();
1674
1675    @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
1676
1677    foreach my $line (@lines) {
1678	if ($line =~ m/$VCS_cmds{"blame_commit_pattern"}/) {
1679	    push(@commits, $1);
1680	}
1681    }
1682
1683    return @commits;
1684}
1685
1686sub vcs_blame {
1687    my ($file) = @_;
1688    my $cmd;
1689    my @commits = ();
1690
1691    return @commits if (!(-f $file));
1692
1693    if (@range && $VCS_cmds{"blame_range_cmd"} eq "") {
1694	my @all_commits = ();
1695
1696	$cmd = $VCS_cmds{"blame_file_cmd"};
1697	$cmd =~ s/(\$\w+)/$1/eeg;		#interpolate $cmd
1698	@all_commits = vcs_save_commits($cmd);
1699
1700	foreach my $file_range_diff (@range) {
1701	    next if (!($file_range_diff =~ m/(.+):(.+):(.+)/));
1702	    my $diff_file = $1;
1703	    my $diff_start = $2;
1704	    my $diff_length = $3;
1705	    next if ("$file" ne "$diff_file");
1706	    for (my $i = $diff_start; $i < $diff_start + $diff_length; $i++) {
1707		push(@commits, $all_commits[$i]);
1708	    }
1709	}
1710    } elsif (@range) {
1711	foreach my $file_range_diff (@range) {
1712	    next if (!($file_range_diff =~ m/(.+):(.+):(.+)/));
1713	    my $diff_file = $1;
1714	    my $diff_start = $2;
1715	    my $diff_length = $3;
1716	    next if ("$file" ne "$diff_file");
1717	    $cmd = $VCS_cmds{"blame_range_cmd"};
1718	    $cmd =~ s/(\$\w+)/$1/eeg;		#interpolate $cmd
1719	    push(@commits, vcs_save_commits($cmd));
1720	}
1721    } else {
1722	$cmd = $VCS_cmds{"blame_file_cmd"};
1723	$cmd =~ s/(\$\w+)/$1/eeg;		#interpolate $cmd
1724	@commits = vcs_save_commits($cmd);
1725    }
1726
1727    foreach my $commit (@commits) {
1728	$commit =~ s/^\^//g;
1729    }
1730
1731    return @commits;
1732}
1733
1734my $printed_novcs = 0;
1735sub vcs_exists {
1736    %VCS_cmds = %VCS_cmds_git;
1737    return 1 if eval $VCS_cmds{"available"};
1738    %VCS_cmds = %VCS_cmds_hg;
1739    return 2 if eval $VCS_cmds{"available"};
1740    %VCS_cmds = ();
1741    if (!$printed_novcs && $email_git) {
1742	warn("$P: No supported VCS found.  Add --nogit to options?\n");
1743	warn("Using a git repository produces better results.\n");
1744	warn("Try Linus Torvalds' latest git repository using:\n");
1745	warn("git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git\n");
1746	$printed_novcs = 1;
1747    }
1748    return 0;
1749}
1750
1751sub vcs_is_git {
1752    vcs_exists();
1753    return $vcs_used == 1;
1754}
1755
1756sub vcs_is_hg {
1757    return $vcs_used == 2;
1758}
1759
1760sub vcs_add_commit_signers {
1761    return if (!vcs_exists());
1762
1763    my ($commit, $desc) = @_;
1764    my $commit_count = 0;
1765    my $commit_authors_ref;
1766    my $commit_signers_ref;
1767    my $stats_ref;
1768    my @commit_authors = ();
1769    my @commit_signers = ();
1770    my $cmd;
1771
1772    $cmd = $VCS_cmds{"find_commit_signers_cmd"};
1773    $cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
1774
1775    ($commit_count, $commit_signers_ref, $commit_authors_ref, $stats_ref) = vcs_find_signers($cmd, "");
1776    @commit_authors = @{$commit_authors_ref} if defined $commit_authors_ref;
1777    @commit_signers = @{$commit_signers_ref} if defined $commit_signers_ref;
1778
1779    foreach my $signer (@commit_signers) {
1780	$signer = deduplicate_email($signer);
1781    }
1782
1783    vcs_assign($desc, 1, @commit_signers);
1784}
1785
1786sub interactive_get_maintainers {
1787    my ($list_ref) = @_;
1788    my @list = @$list_ref;
1789
1790    vcs_exists();
1791
1792    my %selected;
1793    my %authored;
1794    my %signed;
1795    my $count = 0;
1796    my $maintained = 0;
1797    foreach my $entry (@list) {
1798	$maintained = 1 if ($entry->[1] =~ /^(maintainer|supporter)/i);
1799	$selected{$count} = 1;
1800	$authored{$count} = 0;
1801	$signed{$count} = 0;
1802	$count++;
1803    }
1804
1805    #menu loop
1806    my $done = 0;
1807    my $print_options = 0;
1808    my $redraw = 1;
1809    while (!$done) {
1810	$count = 0;
1811	if ($redraw) {
1812	    printf STDERR "\n%1s %2s %-65s",
1813			  "*", "#", "email/list and role:stats";
1814	    if ($email_git ||
1815		($email_git_fallback && !$maintained) ||
1816		$email_git_blame) {
1817		print STDERR "auth sign";
1818	    }
1819	    print STDERR "\n";
1820	    foreach my $entry (@list) {
1821		my $email = $entry->[0];
1822		my $role = $entry->[1];
1823		my $sel = "";
1824		$sel = "*" if ($selected{$count});
1825		my $commit_author = $commit_author_hash{$email};
1826		my $commit_signer = $commit_signer_hash{$email};
1827		my $authored = 0;
1828		my $signed = 0;
1829		$authored++ for (@{$commit_author});
1830		$signed++ for (@{$commit_signer});
1831		printf STDERR "%1s %2d %-65s", $sel, $count + 1, $email;
1832		printf STDERR "%4d %4d", $authored, $signed
1833		    if ($authored > 0 || $signed > 0);
1834		printf STDERR "\n     %s\n", $role;
1835		if ($authored{$count}) {
1836		    my $commit_author = $commit_author_hash{$email};
1837		    foreach my $ref (@{$commit_author}) {
1838			print STDERR "     Author: @{$ref}[1]\n";
1839		    }
1840		}
1841		if ($signed{$count}) {
1842		    my $commit_signer = $commit_signer_hash{$email};
1843		    foreach my $ref (@{$commit_signer}) {
1844			print STDERR "     @{$ref}[2]: @{$ref}[1]\n";
1845		    }
1846		}
1847
1848		$count++;
1849	    }
1850	}
1851	my $date_ref = \$email_git_since;
1852	$date_ref = \$email_hg_since if (vcs_is_hg());
1853	if ($print_options) {
1854	    $print_options = 0;
1855	    if (vcs_exists()) {
1856		print STDERR <<EOT
1857
1858Version Control options:
1859g  use git history      [$email_git]
1860gf use git-fallback     [$email_git_fallback]
1861b  use git blame        [$email_git_blame]
1862bs use blame signatures [$email_git_blame_signatures]
1863c# minimum commits      [$email_git_min_signatures]
1864%# min percent          [$email_git_min_percent]
1865d# history to use       [$$date_ref]
1866x# max maintainers      [$email_git_max_maintainers]
1867t  all signature types  [$email_git_all_signature_types]
1868m  use .mailmap         [$email_use_mailmap]
1869EOT
1870	    }
1871	    print STDERR <<EOT
1872
1873Additional options:
18740  toggle all
1875tm toggle maintainers
1876tg toggle git entries
1877tl toggle open list entries
1878ts toggle subscriber list entries
1879f  emails in file       [$email_file_emails]
1880k  keywords in file     [$keywords]
1881r  remove duplicates    [$email_remove_duplicates]
1882p# pattern match depth  [$pattern_depth]
1883EOT
1884	}
1885	print STDERR
1886"\n#(toggle), A#(author), S#(signed) *(all), ^(none), O(options), Y(approve): ";
1887
1888	my $input = <STDIN>;
1889	chomp($input);
1890
1891	$redraw = 1;
1892	my $rerun = 0;
1893	my @wish = split(/[, ]+/, $input);
1894	foreach my $nr (@wish) {
1895	    $nr = lc($nr);
1896	    my $sel = substr($nr, 0, 1);
1897	    my $str = substr($nr, 1);
1898	    my $val = 0;
1899	    $val = $1 if $str =~ /^(\d+)$/;
1900
1901	    if ($sel eq "y") {
1902		$interactive = 0;
1903		$done = 1;
1904		$output_rolestats = 0;
1905		$output_roles = 0;
1906		last;
1907	    } elsif ($nr =~ /^\d+$/ && $nr > 0 && $nr <= $count) {
1908		$selected{$nr - 1} = !$selected{$nr - 1};
1909	    } elsif ($sel eq "*" || $sel eq '^') {
1910		my $toggle = 0;
1911		$toggle = 1 if ($sel eq '*');
1912		for (my $i = 0; $i < $count; $i++) {
1913		    $selected{$i} = $toggle;
1914		}
1915	    } elsif ($sel eq "0") {
1916		for (my $i = 0; $i < $count; $i++) {
1917		    $selected{$i} = !$selected{$i};
1918		}
1919	    } elsif ($sel eq "t") {
1920		if (lc($str) eq "m") {
1921		    for (my $i = 0; $i < $count; $i++) {
1922			$selected{$i} = !$selected{$i}
1923			    if ($list[$i]->[1] =~ /^(maintainer|supporter)/i);
1924		    }
1925		} elsif (lc($str) eq "g") {
1926		    for (my $i = 0; $i < $count; $i++) {
1927			$selected{$i} = !$selected{$i}
1928			    if ($list[$i]->[1] =~ /^(author|commit|signer)/i);
1929		    }
1930		} elsif (lc($str) eq "l") {
1931		    for (my $i = 0; $i < $count; $i++) {
1932			$selected{$i} = !$selected{$i}
1933			    if ($list[$i]->[1] =~ /^(open list)/i);
1934		    }
1935		} elsif (lc($str) eq "s") {
1936		    for (my $i = 0; $i < $count; $i++) {
1937			$selected{$i} = !$selected{$i}
1938			    if ($list[$i]->[1] =~ /^(subscriber list)/i);
1939		    }
1940		}
1941	    } elsif ($sel eq "a") {
1942		if ($val > 0 && $val <= $count) {
1943		    $authored{$val - 1} = !$authored{$val - 1};
1944		} elsif ($str eq '*' || $str eq '^') {
1945		    my $toggle = 0;
1946		    $toggle = 1 if ($str eq '*');
1947		    for (my $i = 0; $i < $count; $i++) {
1948			$authored{$i} = $toggle;
1949		    }
1950		}
1951	    } elsif ($sel eq "s") {
1952		if ($val > 0 && $val <= $count) {
1953		    $signed{$val - 1} = !$signed{$val - 1};
1954		} elsif ($str eq '*' || $str eq '^') {
1955		    my $toggle = 0;
1956		    $toggle = 1 if ($str eq '*');
1957		    for (my $i = 0; $i < $count; $i++) {
1958			$signed{$i} = $toggle;
1959		    }
1960		}
1961	    } elsif ($sel eq "o") {
1962		$print_options = 1;
1963		$redraw = 1;
1964	    } elsif ($sel eq "g") {
1965		if ($str eq "f") {
1966		    bool_invert(\$email_git_fallback);
1967		} else {
1968		    bool_invert(\$email_git);
1969		}
1970		$rerun = 1;
1971	    } elsif ($sel eq "b") {
1972		if ($str eq "s") {
1973		    bool_invert(\$email_git_blame_signatures);
1974		} else {
1975		    bool_invert(\$email_git_blame);
1976		}
1977		$rerun = 1;
1978	    } elsif ($sel eq "c") {
1979		if ($val > 0) {
1980		    $email_git_min_signatures = $val;
1981		    $rerun = 1;
1982		}
1983	    } elsif ($sel eq "x") {
1984		if ($val > 0) {
1985		    $email_git_max_maintainers = $val;
1986		    $rerun = 1;
1987		}
1988	    } elsif ($sel eq "%") {
1989		if ($str ne "" && $val >= 0) {
1990		    $email_git_min_percent = $val;
1991		    $rerun = 1;
1992		}
1993	    } elsif ($sel eq "d") {
1994		if (vcs_is_git()) {
1995		    $email_git_since = $str;
1996		} elsif (vcs_is_hg()) {
1997		    $email_hg_since = $str;
1998		}
1999		$rerun = 1;
2000	    } elsif ($sel eq "t") {
2001		bool_invert(\$email_git_all_signature_types);
2002		$rerun = 1;
2003	    } elsif ($sel eq "f") {
2004		bool_invert(\$email_file_emails);
2005		$rerun = 1;
2006	    } elsif ($sel eq "r") {
2007		bool_invert(\$email_remove_duplicates);
2008		$rerun = 1;
2009	    } elsif ($sel eq "m") {
2010		bool_invert(\$email_use_mailmap);
2011		read_mailmap();
2012		$rerun = 1;
2013	    } elsif ($sel eq "k") {
2014		bool_invert(\$keywords);
2015		$rerun = 1;
2016	    } elsif ($sel eq "p") {
2017		if ($str ne "" && $val >= 0) {
2018		    $pattern_depth = $val;
2019		    $rerun = 1;
2020		}
2021	    } elsif ($sel eq "h" || $sel eq "?") {
2022		print STDERR <<EOT
2023
2024Interactive mode allows you to select the various maintainers, submitters,
2025commit signers and mailing lists that could be CC'd on a patch.
2026
2027Any *'d entry is selected.
2028
2029If you have git or hg installed, you can choose to summarize the commit
2030history of files in the patch.  Also, each line of the current file can
2031be matched to its commit author and that commits signers with blame.
2032
2033Various knobs exist to control the length of time for active commit
2034tracking, the maximum number of commit authors and signers to add,
2035and such.
2036
2037Enter selections at the prompt until you are satisfied that the selected
2038maintainers are appropriate.  You may enter multiple selections separated
2039by either commas or spaces.
2040
2041EOT
2042	    } else {
2043		print STDERR "invalid option: '$nr'\n";
2044		$redraw = 0;
2045	    }
2046	}
2047	if ($rerun) {
2048	    print STDERR "git-blame can be very slow, please have patience..."
2049		if ($email_git_blame);
2050	    goto &get_maintainers;
2051	}
2052    }
2053
2054    #drop not selected entries
2055    $count = 0;
2056    my @new_emailto = ();
2057    foreach my $entry (@list) {
2058	if ($selected{$count}) {
2059	    push(@new_emailto, $list[$count]);
2060	}
2061	$count++;
2062    }
2063    return @new_emailto;
2064}
2065
2066sub bool_invert {
2067    my ($bool_ref) = @_;
2068
2069    if ($$bool_ref) {
2070	$$bool_ref = 0;
2071    } else {
2072	$$bool_ref = 1;
2073    }
2074}
2075
2076sub deduplicate_email {
2077    my ($email) = @_;
2078
2079    my $matched = 0;
2080    my ($name, $address) = parse_email($email);
2081    $email = format_email($name, $address, 1);
2082    $email = mailmap_email($email);
2083
2084    return $email if (!$email_remove_duplicates);
2085
2086    ($name, $address) = parse_email($email);
2087
2088    if ($name ne "" && $deduplicate_name_hash{lc($name)}) {
2089	$name = $deduplicate_name_hash{lc($name)}->[0];
2090	$address = $deduplicate_name_hash{lc($name)}->[1];
2091	$matched = 1;
2092    } elsif ($deduplicate_address_hash{lc($address)}) {
2093	$name = $deduplicate_address_hash{lc($address)}->[0];
2094	$address = $deduplicate_address_hash{lc($address)}->[1];
2095	$matched = 1;
2096    }
2097    if (!$matched) {
2098	$deduplicate_name_hash{lc($name)} = [ $name, $address ];
2099	$deduplicate_address_hash{lc($address)} = [ $name, $address ];
2100    }
2101    $email = format_email($name, $address, 1);
2102    $email = mailmap_email($email);
2103    return $email;
2104}
2105
2106sub save_commits_by_author {
2107    my (@lines) = @_;
2108
2109    my @authors = ();
2110    my @commits = ();
2111    my @subjects = ();
2112
2113    foreach my $line (@lines) {
2114	if ($line =~ m/$VCS_cmds{"author_pattern"}/) {
2115	    my $author = $1;
2116	    $author = deduplicate_email($author);
2117	    push(@authors, $author);
2118	}
2119	push(@commits, $1) if ($line =~ m/$VCS_cmds{"commit_pattern"}/);
2120	push(@subjects, $1) if ($line =~ m/$VCS_cmds{"subject_pattern"}/);
2121    }
2122
2123    for (my $i = 0; $i < @authors; $i++) {
2124	my $exists = 0;
2125	foreach my $ref(@{$commit_author_hash{$authors[$i]}}) {
2126	    if (@{$ref}[0] eq $commits[$i] &&
2127		@{$ref}[1] eq $subjects[$i]) {
2128		$exists = 1;
2129		last;
2130	    }
2131	}
2132	if (!$exists) {
2133	    push(@{$commit_author_hash{$authors[$i]}},
2134		 [ ($commits[$i], $subjects[$i]) ]);
2135	}
2136    }
2137}
2138
2139sub save_commits_by_signer {
2140    my (@lines) = @_;
2141
2142    my $commit = "";
2143    my $subject = "";
2144
2145    foreach my $line (@lines) {
2146	$commit = $1 if ($line =~ m/$VCS_cmds{"commit_pattern"}/);
2147	$subject = $1 if ($line =~ m/$VCS_cmds{"subject_pattern"}/);
2148	if ($line =~ /^[ \t]*${signature_pattern}.*\@.*$/) {
2149	    my @signatures = ($line);
2150	    my ($types_ref, $signers_ref) = extract_formatted_signatures(@signatures);
2151	    my @types = @$types_ref;
2152	    my @signers = @$signers_ref;
2153
2154	    my $type = $types[0];
2155	    my $signer = $signers[0];
2156
2157	    $signer = deduplicate_email($signer);
2158
2159	    my $exists = 0;
2160	    foreach my $ref(@{$commit_signer_hash{$signer}}) {
2161		if (@{$ref}[0] eq $commit &&
2162		    @{$ref}[1] eq $subject &&
2163		    @{$ref}[2] eq $type) {
2164		    $exists = 1;
2165		    last;
2166		}
2167	    }
2168	    if (!$exists) {
2169		push(@{$commit_signer_hash{$signer}},
2170		     [ ($commit, $subject, $type) ]);
2171	    }
2172	}
2173    }
2174}
2175
2176sub vcs_assign {
2177    my ($role, $divisor, @lines) = @_;
2178
2179    my %hash;
2180    my $count = 0;
2181
2182    return if (@lines <= 0);
2183
2184    if ($divisor <= 0) {
2185	warn("Bad divisor in " . (caller(0))[3] . ": $divisor\n");
2186	$divisor = 1;
2187    }
2188
2189    @lines = mailmap(@lines);
2190
2191    return if (@lines <= 0);
2192
2193    @lines = sort(@lines);
2194
2195    # uniq -c
2196    $hash{$_}++ for @lines;
2197
2198    # sort -rn
2199    foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {
2200	my $sign_offs = $hash{$line};
2201	my $percent = $sign_offs * 100 / $divisor;
2202
2203	$percent = 100 if ($percent > 100);
2204	next if (ignore_email_address($line));
2205	$count++;
2206	last if ($sign_offs < $email_git_min_signatures ||
2207		 $count > $email_git_max_maintainers ||
2208		 $percent < $email_git_min_percent);
2209	push_email_address($line, '');
2210	if ($output_rolestats) {
2211	    my $fmt_percent = sprintf("%.0f", $percent);
2212	    add_role($line, "$role:$sign_offs/$divisor=$fmt_percent%");
2213	} else {
2214	    add_role($line, $role);
2215	}
2216    }
2217}
2218
2219sub vcs_file_signoffs {
2220    my ($file) = @_;
2221
2222    my $authors_ref;
2223    my $signers_ref;
2224    my $stats_ref;
2225    my @authors = ();
2226    my @signers = ();
2227    my @stats = ();
2228    my $commits;
2229
2230    $vcs_used = vcs_exists();
2231    return if (!$vcs_used);
2232
2233    my $cmd = $VCS_cmds{"find_signers_cmd"};
2234    $cmd =~ s/(\$\w+)/$1/eeg;		# interpolate $cmd
2235
2236    ($commits, $signers_ref, $authors_ref, $stats_ref) = vcs_find_signers($cmd, $file);
2237
2238    @signers = @{$signers_ref} if defined $signers_ref;
2239    @authors = @{$authors_ref} if defined $authors_ref;
2240    @stats = @{$stats_ref} if defined $stats_ref;
2241
2242#    print("commits: <$commits>\nsigners:<@signers>\nauthors: <@authors>\nstats: <@stats>\n");
2243
2244    foreach my $signer (@signers) {
2245	$signer = deduplicate_email($signer);
2246    }
2247
2248    vcs_assign("commit_signer", $commits, @signers);
2249    vcs_assign("authored", $commits, @authors);
2250    if ($#authors == $#stats) {
2251	my $stat_pattern = $VCS_cmds{"stat_pattern"};
2252	$stat_pattern =~ s/(\$\w+)/$1/eeg;	#interpolate $stat_pattern
2253
2254	my $added = 0;
2255	my $deleted = 0;
2256	for (my $i = 0; $i <= $#stats; $i++) {
2257	    if ($stats[$i] =~ /$stat_pattern/) {
2258		$added += $1;
2259		$deleted += $2;
2260	    }
2261	}
2262	my @tmp_authors = uniq(@authors);
2263	foreach my $author (@tmp_authors) {
2264	    $author = deduplicate_email($author);
2265	}
2266	@tmp_authors = uniq(@tmp_authors);
2267	my @list_added = ();
2268	my @list_deleted = ();
2269	foreach my $author (@tmp_authors) {
2270	    my $auth_added = 0;
2271	    my $auth_deleted = 0;
2272	    for (my $i = 0; $i <= $#stats; $i++) {
2273		if ($author eq deduplicate_email($authors[$i]) &&
2274		    $stats[$i] =~ /$stat_pattern/) {
2275		    $auth_added += $1;
2276		    $auth_deleted += $2;
2277		}
2278	    }
2279	    for (my $i = 0; $i < $auth_added; $i++) {
2280		push(@list_added, $author);
2281	    }
2282	    for (my $i = 0; $i < $auth_deleted; $i++) {
2283		push(@list_deleted, $author);
2284	    }
2285	}
2286	vcs_assign("added_lines", $added, @list_added);
2287	vcs_assign("removed_lines", $deleted, @list_deleted);
2288    }
2289}
2290
2291sub vcs_file_blame {
2292    my ($file) = @_;
2293
2294    my @signers = ();
2295    my @all_commits = ();
2296    my @commits = ();
2297    my $total_commits;
2298    my $total_lines;
2299
2300    $vcs_used = vcs_exists();
2301    return if (!$vcs_used);
2302
2303    @all_commits = vcs_blame($file);
2304    @commits = uniq(@all_commits);
2305    $total_commits = @commits;
2306    $total_lines = @all_commits;
2307
2308    if ($email_git_blame_signatures) {
2309	if (vcs_is_hg()) {
2310	    my $commit_count;
2311	    my $commit_authors_ref;
2312	    my $commit_signers_ref;
2313	    my $stats_ref;
2314	    my @commit_authors = ();
2315	    my @commit_signers = ();
2316	    my $commit = join(" -r ", @commits);
2317	    my $cmd;
2318
2319	    $cmd = $VCS_cmds{"find_commit_signers_cmd"};
2320	    $cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
2321
2322	    ($commit_count, $commit_signers_ref, $commit_authors_ref, $stats_ref) = vcs_find_signers($cmd, $file);
2323	    @commit_authors = @{$commit_authors_ref} if defined $commit_authors_ref;
2324	    @commit_signers = @{$commit_signers_ref} if defined $commit_signers_ref;
2325
2326	    push(@signers, @commit_signers);
2327	} else {
2328	    foreach my $commit (@commits) {
2329		my $commit_count;
2330		my $commit_authors_ref;
2331		my $commit_signers_ref;
2332		my $stats_ref;
2333		my @commit_authors = ();
2334		my @commit_signers = ();
2335		my $cmd;
2336
2337		$cmd = $VCS_cmds{"find_commit_signers_cmd"};
2338		$cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
2339
2340		($commit_count, $commit_signers_ref, $commit_authors_ref, $stats_ref) = vcs_find_signers($cmd, $file);
2341		@commit_authors = @{$commit_authors_ref} if defined $commit_authors_ref;
2342		@commit_signers = @{$commit_signers_ref} if defined $commit_signers_ref;
2343
2344		push(@signers, @commit_signers);
2345	    }
2346	}
2347    }
2348
2349    if ($from_filename) {
2350	if ($output_rolestats) {
2351	    my @blame_signers;
2352	    if (vcs_is_hg()) {{		# Double brace for last exit
2353		my $commit_count;
2354		my @commit_signers = ();
2355		@commits = uniq(@commits);
2356		@commits = sort(@commits);
2357		my $commit = join(" -r ", @commits);
2358		my $cmd;
2359
2360		$cmd = $VCS_cmds{"find_commit_author_cmd"};
2361		$cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
2362
2363		my @lines = ();
2364
2365		@lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
2366
2367		if (!$email_git_penguin_chiefs) {
2368		    @lines = grep(!/${penguin_chiefs}/i, @lines);
2369		}
2370
2371		last if !@lines;
2372
2373		my @authors = ();
2374		foreach my $line (@lines) {
2375		    if ($line =~ m/$VCS_cmds{"author_pattern"}/) {
2376			my $author = $1;
2377			$author = deduplicate_email($author);
2378			push(@authors, $author);
2379		    }
2380		}
2381
2382		save_commits_by_author(@lines) if ($interactive);
2383		save_commits_by_signer(@lines) if ($interactive);
2384
2385		push(@signers, @authors);
2386	    }}
2387	    else {
2388		foreach my $commit (@commits) {
2389		    my $i;
2390		    my $cmd = $VCS_cmds{"find_commit_author_cmd"};
2391		    $cmd =~ s/(\$\w+)/$1/eeg;	#interpolate $cmd
2392		    my @author = vcs_find_author($cmd);
2393		    next if !@author;
2394
2395		    my $formatted_author = deduplicate_email($author[0]);
2396
2397		    my $count = grep(/$commit/, @all_commits);
2398		    for ($i = 0; $i < $count ; $i++) {
2399			push(@blame_signers, $formatted_author);
2400		    }
2401		}
2402	    }
2403	    if (@blame_signers) {
2404		vcs_assign("authored lines", $total_lines, @blame_signers);
2405	    }
2406	}
2407	foreach my $signer (@signers) {
2408	    $signer = deduplicate_email($signer);
2409	}
2410	vcs_assign("commits", $total_commits, @signers);
2411    } else {
2412	foreach my $signer (@signers) {
2413	    $signer = deduplicate_email($signer);
2414	}
2415	vcs_assign("modified commits", $total_commits, @signers);
2416    }
2417}
2418
2419sub vcs_file_exists {
2420    my ($file) = @_;
2421
2422    my $exists;
2423
2424    my $vcs_used = vcs_exists();
2425    return 0 if (!$vcs_used);
2426
2427    my $cmd = $VCS_cmds{"file_exists_cmd"};
2428    $cmd =~ s/(\$\w+)/$1/eeg;		# interpolate $cmd
2429    $cmd .= " 2>&1";
2430    $exists = &{$VCS_cmds{"execute_cmd"}}($cmd);
2431
2432    return 0 if ($? != 0);
2433
2434    return $exists;
2435}
2436
2437sub vcs_list_files {
2438    my ($file) = @_;
2439
2440    my @lsfiles = ();
2441
2442    my $vcs_used = vcs_exists();
2443    return 0 if (!$vcs_used);
2444
2445    my $cmd = $VCS_cmds{"list_files_cmd"};
2446    $cmd =~ s/(\$\w+)/$1/eeg;   # interpolate $cmd
2447    @lsfiles = &{$VCS_cmds{"execute_cmd"}}($cmd);
2448
2449    return () if ($? != 0);
2450
2451    return @lsfiles;
2452}
2453
2454sub uniq {
2455    my (@parms) = @_;
2456
2457    my %saw;
2458    @parms = grep(!$saw{$_}++, @parms);
2459    return @parms;
2460}
2461
2462sub sort_and_uniq {
2463    my (@parms) = @_;
2464
2465    my %saw;
2466    @parms = sort @parms;
2467    @parms = grep(!$saw{$_}++, @parms);
2468    return @parms;
2469}
2470
2471sub clean_file_emails {
2472    my (@file_emails) = @_;
2473    my @fmt_emails = ();
2474
2475    foreach my $email (@file_emails) {
2476	$email =~ s/[\(\<\{]{0,1}([A-Za-z0-9_\.\+-]+\@[A-Za-z0-9\.-]+)[\)\>\}]{0,1}/\<$1\>/g;
2477	my ($name, $address) = parse_email($email);
 
 
 
2478
2479	# Strip quotes for easier processing, format_email will add them back
2480	$name =~ s/^"(.*)"$/$1/;
2481
2482	# Split into name-like parts and remove stray punctuation particles
2483	my @nw = split(/[^\p{L}\'\,\.\+-]/, $name);
2484	@nw = grep(!/^[\'\,\.\+-]$/, @nw);
2485
2486	# Make a best effort to extract the name, and only the name, by taking
2487	# only the last two names, or in the case of obvious initials, the last
2488	# three names.
2489	if (@nw > 2) {
2490	    my $first = $nw[@nw - 3];
2491	    my $middle = $nw[@nw - 2];
2492	    my $last = $nw[@nw - 1];
2493
2494	    if (((length($first) == 1 && $first =~ m/\p{L}/) ||
2495		 (length($first) == 2 && substr($first, -1) eq ".")) ||
2496		(length($middle) == 1 ||
2497		 (length($middle) == 2 && substr($middle, -1) eq "."))) {
2498		$name = "$first $middle $last";
2499	    } else {
2500		$name = "$middle $last";
2501	    }
2502	} else {
2503	    $name = "@nw";
2504	}
2505
2506	if (substr($name, -1) =~ /[,\.]/) {
2507	    $name = substr($name, 0, length($name) - 1);
 
 
2508	}
2509
2510	if (substr($name, 0, 1) =~ /[,\.]/) {
2511	    $name = substr($name, 1, length($name) - 1);
 
 
2512	}
2513
2514	my $fmt_email = format_email($name, $address, $email_usename);
2515	push(@fmt_emails, $fmt_email);
2516    }
2517    return @fmt_emails;
2518}
2519
2520sub merge_email {
2521    my @lines;
2522    my %saw;
2523
2524    for (@_) {
2525	my ($address, $role) = @$_;
2526	if (!$saw{$address}) {
2527	    if ($output_roles) {
2528		push(@lines, "$address ($role)");
2529	    } else {
2530		push(@lines, $address);
2531	    }
2532	    $saw{$address} = 1;
2533	}
2534    }
2535
2536    return @lines;
2537}
2538
2539sub output {
2540    my (@parms) = @_;
2541
2542    if ($output_multiline) {
2543	foreach my $line (@parms) {
2544	    print("${line}\n");
2545	}
2546    } else {
2547	print(join($output_separator, @parms));
2548	print("\n");
2549    }
2550}
2551
2552my $rfc822re;
2553
2554sub make_rfc822re {
2555#   Basic lexical tokens are specials, domain_literal, quoted_string, atom, and
2556#   comment.  We must allow for rfc822_lwsp (or comments) after each of these.
2557#   This regexp will only work on addresses which have had comments stripped
2558#   and replaced with rfc822_lwsp.
2559
2560    my $specials = '()<>@,;:\\\\".\\[\\]';
2561    my $controls = '\\000-\\037\\177';
2562
2563    my $dtext = "[^\\[\\]\\r\\\\]";
2564    my $domain_literal = "\\[(?:$dtext|\\\\.)*\\]$rfc822_lwsp*";
2565
2566    my $quoted_string = "\"(?:[^\\\"\\r\\\\]|\\\\.|$rfc822_lwsp)*\"$rfc822_lwsp*";
2567
2568#   Use zero-width assertion to spot the limit of an atom.  A simple
2569#   $rfc822_lwsp* causes the regexp engine to hang occasionally.
2570    my $atom = "[^$specials $controls]+(?:$rfc822_lwsp+|\\Z|(?=[\\[\"$specials]))";
2571    my $word = "(?:$atom|$quoted_string)";
2572    my $localpart = "$word(?:\\.$rfc822_lwsp*$word)*";
2573
2574    my $sub_domain = "(?:$atom|$domain_literal)";
2575    my $domain = "$sub_domain(?:\\.$rfc822_lwsp*$sub_domain)*";
2576
2577    my $addr_spec = "$localpart\@$rfc822_lwsp*$domain";
2578
2579    my $phrase = "$word*";
2580    my $route = "(?:\@$domain(?:,\@$rfc822_lwsp*$domain)*:$rfc822_lwsp*)";
2581    my $route_addr = "\\<$rfc822_lwsp*$route?$addr_spec\\>$rfc822_lwsp*";
2582    my $mailbox = "(?:$addr_spec|$phrase$route_addr)";
2583
2584    my $group = "$phrase:$rfc822_lwsp*(?:$mailbox(?:,\\s*$mailbox)*)?;\\s*";
2585    my $address = "(?:$mailbox|$group)";
2586
2587    return "$rfc822_lwsp*$address";
2588}
2589
2590sub rfc822_strip_comments {
2591    my $s = shift;
2592#   Recursively remove comments, and replace with a single space.  The simpler
2593#   regexps in the Email Addressing FAQ are imperfect - they will miss escaped
2594#   chars in atoms, for example.
2595
2596    while ($s =~ s/^((?:[^"\\]|\\.)*
2597                    (?:"(?:[^"\\]|\\.)*"(?:[^"\\]|\\.)*)*)
2598                    \((?:[^()\\]|\\.)*\)/$1 /osx) {}
2599    return $s;
2600}
2601
2602#   valid: returns true if the parameter is an RFC822 valid address
2603#
2604sub rfc822_valid {
2605    my $s = rfc822_strip_comments(shift);
2606
2607    if (!$rfc822re) {
2608        $rfc822re = make_rfc822re();
2609    }
2610
2611    return $s =~ m/^$rfc822re$/so && $s =~ m/^$rfc822_char*$/;
2612}
2613
2614#   validlist: In scalar context, returns true if the parameter is an RFC822
2615#              valid list of addresses.
2616#
2617#              In list context, returns an empty list on failure (an invalid
2618#              address was found); otherwise a list whose first element is the
2619#              number of addresses found and whose remaining elements are the
2620#              addresses.  This is needed to disambiguate failure (invalid)
2621#              from success with no addresses found, because an empty string is
2622#              a valid list.
2623
2624sub rfc822_validlist {
2625    my $s = rfc822_strip_comments(shift);
2626
2627    if (!$rfc822re) {
2628        $rfc822re = make_rfc822re();
2629    }
2630    # * null list items are valid according to the RFC
2631    # * the '1' business is to aid in distinguishing failure from no results
2632
2633    my @r;
2634    if ($s =~ m/^(?:$rfc822re)?(?:,(?:$rfc822re)?)*$/so &&
2635	$s =~ m/^$rfc822_char*$/) {
2636        while ($s =~ m/(?:^|,$rfc822_lwsp*)($rfc822re)/gos) {
2637            push(@r, $1);
2638        }
2639        return wantarray ? (scalar(@r), @r) : 1;
2640    }
2641    return wantarray ? () : 0;
2642}