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1%option nostdinit noyywrap never-interactive full ecs
2%option 8bit nodefault yylineno
3%option noinput
4%x COMMAND HELP STRING PARAM
5%{
6/*
7 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
8 * Released under the terms of the GNU GPL v2.0.
9 */
10
11#include <limits.h>
12#include <stdio.h>
13#include <stdlib.h>
14#include <string.h>
15#include <unistd.h>
16
17#include "lkc.h"
18
19#define START_STRSIZE 16
20
21static struct {
22 struct file *file;
23 int lineno;
24} current_pos;
25
26static char *text;
27static int text_size, text_asize;
28
29struct buffer {
30 struct buffer *parent;
31 YY_BUFFER_STATE state;
32};
33
34struct buffer *current_buf;
35
36static int last_ts, first_ts;
37
38static void zconf_endhelp(void);
39static void zconf_endfile(void);
40
41static void new_string(void)
42{
43 text = xmalloc(START_STRSIZE);
44 text_asize = START_STRSIZE;
45 text_size = 0;
46 *text = 0;
47}
48
49static void append_string(const char *str, int size)
50{
51 int new_size = text_size + size + 1;
52 if (new_size > text_asize) {
53 new_size += START_STRSIZE - 1;
54 new_size &= -START_STRSIZE;
55 text = xrealloc(text, new_size);
56 text_asize = new_size;
57 }
58 memcpy(text + text_size, str, size);
59 text_size += size;
60 text[text_size] = 0;
61}
62
63static void alloc_string(const char *str, int size)
64{
65 text = xmalloc(size + 1);
66 memcpy(text, str, size);
67 text[size] = 0;
68}
69
70static void warn_ignored_character(char chr)
71{
72 fprintf(stderr,
73 "%s:%d:warning: ignoring unsupported character '%c'\n",
74 zconf_curname(), zconf_lineno(), chr);
75}
76%}
77
78n [A-Za-z0-9_-]
79
80%%
81 int str = 0;
82 int ts, i;
83
84[ \t]*#.*\n |
85[ \t]*\n {
86 return T_EOL;
87}
88[ \t]*#.*
89
90
91[ \t]+ {
92 BEGIN(COMMAND);
93}
94
95. {
96 unput(yytext[0]);
97 BEGIN(COMMAND);
98}
99
100
101<COMMAND>{
102 {n}+ {
103 const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
104 BEGIN(PARAM);
105 current_pos.file = current_file;
106 current_pos.lineno = yylineno;
107 if (id && id->flags & TF_COMMAND) {
108 yylval.id = id;
109 return id->token;
110 }
111 alloc_string(yytext, yyleng);
112 yylval.string = text;
113 return T_WORD;
114 }
115 . warn_ignored_character(*yytext);
116 \n {
117 BEGIN(INITIAL);
118 return T_EOL;
119 }
120}
121
122<PARAM>{
123 "&&" return T_AND;
124 "||" return T_OR;
125 "(" return T_OPEN_PAREN;
126 ")" return T_CLOSE_PAREN;
127 "!" return T_NOT;
128 "=" return T_EQUAL;
129 "!=" return T_UNEQUAL;
130 "<=" return T_LESS_EQUAL;
131 ">=" return T_GREATER_EQUAL;
132 "<" return T_LESS;
133 ">" return T_GREATER;
134 \"|\' {
135 str = yytext[0];
136 new_string();
137 BEGIN(STRING);
138 }
139 \n BEGIN(INITIAL); return T_EOL;
140 ({n}|[/.])+ {
141 const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
142 if (id && id->flags & TF_PARAM) {
143 yylval.id = id;
144 return id->token;
145 }
146 alloc_string(yytext, yyleng);
147 yylval.string = text;
148 return T_WORD;
149 }
150 #.* /* comment */
151 \\\n ;
152 [[:blank:]]+
153 . warn_ignored_character(*yytext);
154 <<EOF>> {
155 BEGIN(INITIAL);
156 }
157}
158
159<STRING>{
160 [^'"\\\n]+/\n {
161 append_string(yytext, yyleng);
162 yylval.string = text;
163 return T_WORD_QUOTE;
164 }
165 [^'"\\\n]+ {
166 append_string(yytext, yyleng);
167 }
168 \\.?/\n {
169 append_string(yytext + 1, yyleng - 1);
170 yylval.string = text;
171 return T_WORD_QUOTE;
172 }
173 \\.? {
174 append_string(yytext + 1, yyleng - 1);
175 }
176 \'|\" {
177 if (str == yytext[0]) {
178 BEGIN(PARAM);
179 yylval.string = text;
180 return T_WORD_QUOTE;
181 } else
182 append_string(yytext, 1);
183 }
184 \n {
185 fprintf(stderr,
186 "%s:%d:warning: multi-line strings not supported\n",
187 zconf_curname(), zconf_lineno());
188 BEGIN(INITIAL);
189 return T_EOL;
190 }
191 <<EOF>> {
192 BEGIN(INITIAL);
193 }
194}
195
196<HELP>{
197 [ \t]+ {
198 ts = 0;
199 for (i = 0; i < yyleng; i++) {
200 if (yytext[i] == '\t')
201 ts = (ts & ~7) + 8;
202 else
203 ts++;
204 }
205 last_ts = ts;
206 if (first_ts) {
207 if (ts < first_ts) {
208 zconf_endhelp();
209 return T_HELPTEXT;
210 }
211 ts -= first_ts;
212 while (ts > 8) {
213 append_string(" ", 8);
214 ts -= 8;
215 }
216 append_string(" ", ts);
217 }
218 }
219 [ \t]*\n/[^ \t\n] {
220 zconf_endhelp();
221 return T_HELPTEXT;
222 }
223 [ \t]*\n {
224 append_string("\n", 1);
225 }
226 [^ \t\n].* {
227 while (yyleng) {
228 if ((yytext[yyleng-1] != ' ') && (yytext[yyleng-1] != '\t'))
229 break;
230 yyleng--;
231 }
232 append_string(yytext, yyleng);
233 if (!first_ts)
234 first_ts = last_ts;
235 }
236 <<EOF>> {
237 zconf_endhelp();
238 return T_HELPTEXT;
239 }
240}
241
242<<EOF>> {
243 if (current_file) {
244 zconf_endfile();
245 return T_EOL;
246 }
247 fclose(yyin);
248 yyterminate();
249}
250
251%%
252void zconf_starthelp(void)
253{
254 new_string();
255 last_ts = first_ts = 0;
256 BEGIN(HELP);
257}
258
259static void zconf_endhelp(void)
260{
261 yylval.string = text;
262 BEGIN(INITIAL);
263}
264
265
266/*
267 * Try to open specified file with following names:
268 * ./name
269 * $(srctree)/name
270 * The latter is used when srctree is separate from objtree
271 * when compiling the kernel.
272 * Return NULL if file is not found.
273 */
274FILE *zconf_fopen(const char *name)
275{
276 char *env, fullname[PATH_MAX+1];
277 FILE *f;
278
279 f = fopen(name, "r");
280 if (!f && name != NULL && name[0] != '/') {
281 env = getenv(SRCTREE);
282 if (env) {
283 sprintf(fullname, "%s/%s", env, name);
284 f = fopen(fullname, "r");
285 }
286 }
287 return f;
288}
289
290void zconf_initscan(const char *name)
291{
292 yyin = zconf_fopen(name);
293 if (!yyin) {
294 fprintf(stderr, "can't find file %s\n", name);
295 exit(1);
296 }
297
298 current_buf = xmalloc(sizeof(*current_buf));
299 memset(current_buf, 0, sizeof(*current_buf));
300
301 current_file = file_lookup(name);
302 yylineno = 1;
303}
304
305void zconf_nextfile(const char *name)
306{
307 struct file *iter;
308 struct file *file = file_lookup(name);
309 struct buffer *buf = xmalloc(sizeof(*buf));
310 memset(buf, 0, sizeof(*buf));
311
312 current_buf->state = YY_CURRENT_BUFFER;
313 yyin = zconf_fopen(file->name);
314 if (!yyin) {
315 fprintf(stderr, "%s:%d: can't open file \"%s\"\n",
316 zconf_curname(), zconf_lineno(), file->name);
317 exit(1);
318 }
319 yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
320 buf->parent = current_buf;
321 current_buf = buf;
322
323 current_file->lineno = yylineno;
324 file->parent = current_file;
325
326 for (iter = current_file; iter; iter = iter->parent) {
327 if (!strcmp(iter->name, file->name)) {
328 fprintf(stderr,
329 "Recursive inclusion detected.\n"
330 "Inclusion path:\n"
331 " current file : %s\n", file->name);
332 iter = file;
333 do {
334 iter = iter->parent;
335 fprintf(stderr, " included from: %s:%d\n",
336 iter->name, iter->lineno - 1);
337 } while (strcmp(iter->name, file->name));
338 exit(1);
339 }
340 }
341
342 yylineno = 1;
343 current_file = file;
344}
345
346static void zconf_endfile(void)
347{
348 struct buffer *parent;
349
350 current_file = current_file->parent;
351 if (current_file)
352 yylineno = current_file->lineno;
353
354 parent = current_buf->parent;
355 if (parent) {
356 fclose(yyin);
357 yy_delete_buffer(YY_CURRENT_BUFFER);
358 yy_switch_to_buffer(parent->state);
359 }
360 free(current_buf);
361 current_buf = parent;
362}
363
364int zconf_lineno(void)
365{
366 return current_pos.lineno;
367}
368
369const char *zconf_curname(void)
370{
371 return current_pos.file ? current_pos.file->name : "<none>";
372}
1%option nostdinit noyywrap never-interactive full ecs
2%option 8bit nodefault perf-report perf-report
3%option noinput
4%x COMMAND HELP STRING PARAM
5%{
6/*
7 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
8 * Released under the terms of the GNU GPL v2.0.
9 */
10
11#include <limits.h>
12#include <stdio.h>
13#include <stdlib.h>
14#include <string.h>
15#include <unistd.h>
16
17#include "lkc.h"
18
19#define START_STRSIZE 16
20
21static struct {
22 struct file *file;
23 int lineno;
24} current_pos;
25
26static char *text;
27static int text_size, text_asize;
28
29struct buffer {
30 struct buffer *parent;
31 YY_BUFFER_STATE state;
32};
33
34struct buffer *current_buf;
35
36static int last_ts, first_ts;
37
38static void zconf_endhelp(void);
39static void zconf_endfile(void);
40
41static void new_string(void)
42{
43 text = malloc(START_STRSIZE);
44 text_asize = START_STRSIZE;
45 text_size = 0;
46 *text = 0;
47}
48
49static void append_string(const char *str, int size)
50{
51 int new_size = text_size + size + 1;
52 if (new_size > text_asize) {
53 new_size += START_STRSIZE - 1;
54 new_size &= -START_STRSIZE;
55 text = realloc(text, new_size);
56 text_asize = new_size;
57 }
58 memcpy(text + text_size, str, size);
59 text_size += size;
60 text[text_size] = 0;
61}
62
63static void alloc_string(const char *str, int size)
64{
65 text = malloc(size + 1);
66 memcpy(text, str, size);
67 text[size] = 0;
68}
69%}
70
71ws [ \n\t]
72n [A-Za-z0-9_]
73
74%%
75 int str = 0;
76 int ts, i;
77
78[ \t]*#.*\n |
79[ \t]*\n {
80 current_file->lineno++;
81 return T_EOL;
82}
83[ \t]*#.*
84
85
86[ \t]+ {
87 BEGIN(COMMAND);
88}
89
90. {
91 unput(yytext[0]);
92 BEGIN(COMMAND);
93}
94
95
96<COMMAND>{
97 {n}+ {
98 const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
99 BEGIN(PARAM);
100 current_pos.file = current_file;
101 current_pos.lineno = current_file->lineno;
102 if (id && id->flags & TF_COMMAND) {
103 zconflval.id = id;
104 return id->token;
105 }
106 alloc_string(yytext, yyleng);
107 zconflval.string = text;
108 return T_WORD;
109 }
110 .
111 \n {
112 BEGIN(INITIAL);
113 current_file->lineno++;
114 return T_EOL;
115 }
116}
117
118<PARAM>{
119 "&&" return T_AND;
120 "||" return T_OR;
121 "(" return T_OPEN_PAREN;
122 ")" return T_CLOSE_PAREN;
123 "!" return T_NOT;
124 "=" return T_EQUAL;
125 "!=" return T_UNEQUAL;
126 \"|\' {
127 str = yytext[0];
128 new_string();
129 BEGIN(STRING);
130 }
131 \n BEGIN(INITIAL); current_file->lineno++; return T_EOL;
132 --- /* ignore */
133 ({n}|[-/.])+ {
134 const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
135 if (id && id->flags & TF_PARAM) {
136 zconflval.id = id;
137 return id->token;
138 }
139 alloc_string(yytext, yyleng);
140 zconflval.string = text;
141 return T_WORD;
142 }
143 #.* /* comment */
144 \\\n current_file->lineno++;
145 .
146 <<EOF>> {
147 BEGIN(INITIAL);
148 }
149}
150
151<STRING>{
152 [^'"\\\n]+/\n {
153 append_string(yytext, yyleng);
154 zconflval.string = text;
155 return T_WORD_QUOTE;
156 }
157 [^'"\\\n]+ {
158 append_string(yytext, yyleng);
159 }
160 \\.?/\n {
161 append_string(yytext + 1, yyleng - 1);
162 zconflval.string = text;
163 return T_WORD_QUOTE;
164 }
165 \\.? {
166 append_string(yytext + 1, yyleng - 1);
167 }
168 \'|\" {
169 if (str == yytext[0]) {
170 BEGIN(PARAM);
171 zconflval.string = text;
172 return T_WORD_QUOTE;
173 } else
174 append_string(yytext, 1);
175 }
176 \n {
177 printf("%s:%d:warning: multi-line strings not supported\n", zconf_curname(), zconf_lineno());
178 current_file->lineno++;
179 BEGIN(INITIAL);
180 return T_EOL;
181 }
182 <<EOF>> {
183 BEGIN(INITIAL);
184 }
185}
186
187<HELP>{
188 [ \t]+ {
189 ts = 0;
190 for (i = 0; i < yyleng; i++) {
191 if (yytext[i] == '\t')
192 ts = (ts & ~7) + 8;
193 else
194 ts++;
195 }
196 last_ts = ts;
197 if (first_ts) {
198 if (ts < first_ts) {
199 zconf_endhelp();
200 return T_HELPTEXT;
201 }
202 ts -= first_ts;
203 while (ts > 8) {
204 append_string(" ", 8);
205 ts -= 8;
206 }
207 append_string(" ", ts);
208 }
209 }
210 [ \t]*\n/[^ \t\n] {
211 current_file->lineno++;
212 zconf_endhelp();
213 return T_HELPTEXT;
214 }
215 [ \t]*\n {
216 current_file->lineno++;
217 append_string("\n", 1);
218 }
219 [^ \t\n].* {
220 while (yyleng) {
221 if ((yytext[yyleng-1] != ' ') && (yytext[yyleng-1] != '\t'))
222 break;
223 yyleng--;
224 }
225 append_string(yytext, yyleng);
226 if (!first_ts)
227 first_ts = last_ts;
228 }
229 <<EOF>> {
230 zconf_endhelp();
231 return T_HELPTEXT;
232 }
233}
234
235<<EOF>> {
236 if (current_file) {
237 zconf_endfile();
238 return T_EOL;
239 }
240 fclose(yyin);
241 yyterminate();
242}
243
244%%
245void zconf_starthelp(void)
246{
247 new_string();
248 last_ts = first_ts = 0;
249 BEGIN(HELP);
250}
251
252static void zconf_endhelp(void)
253{
254 zconflval.string = text;
255 BEGIN(INITIAL);
256}
257
258
259/*
260 * Try to open specified file with following names:
261 * ./name
262 * $(srctree)/name
263 * The latter is used when srctree is separate from objtree
264 * when compiling the kernel.
265 * Return NULL if file is not found.
266 */
267FILE *zconf_fopen(const char *name)
268{
269 char *env, fullname[PATH_MAX+1];
270 FILE *f;
271
272 f = fopen(name, "r");
273 if (!f && name != NULL && name[0] != '/') {
274 env = getenv(SRCTREE);
275 if (env) {
276 sprintf(fullname, "%s/%s", env, name);
277 f = fopen(fullname, "r");
278 }
279 }
280 return f;
281}
282
283void zconf_initscan(const char *name)
284{
285 yyin = zconf_fopen(name);
286 if (!yyin) {
287 printf("can't find file %s\n", name);
288 exit(1);
289 }
290
291 current_buf = malloc(sizeof(*current_buf));
292 memset(current_buf, 0, sizeof(*current_buf));
293
294 current_file = file_lookup(name);
295 current_file->lineno = 1;
296}
297
298void zconf_nextfile(const char *name)
299{
300 struct file *iter;
301 struct file *file = file_lookup(name);
302 struct buffer *buf = malloc(sizeof(*buf));
303 memset(buf, 0, sizeof(*buf));
304
305 current_buf->state = YY_CURRENT_BUFFER;
306 yyin = zconf_fopen(file->name);
307 if (!yyin) {
308 printf("%s:%d: can't open file \"%s\"\n",
309 zconf_curname(), zconf_lineno(), file->name);
310 exit(1);
311 }
312 yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
313 buf->parent = current_buf;
314 current_buf = buf;
315
316 for (iter = current_file->parent; iter; iter = iter->parent ) {
317 if (!strcmp(current_file->name,iter->name) ) {
318 printf("%s:%d: recursive inclusion detected. "
319 "Inclusion path:\n current file : '%s'\n",
320 zconf_curname(), zconf_lineno(),
321 zconf_curname());
322 iter = current_file->parent;
323 while (iter && \
324 strcmp(iter->name,current_file->name)) {
325 printf(" included from: '%s:%d'\n",
326 iter->name, iter->lineno-1);
327 iter = iter->parent;
328 }
329 if (iter)
330 printf(" included from: '%s:%d'\n",
331 iter->name, iter->lineno+1);
332 exit(1);
333 }
334 }
335 file->lineno = 1;
336 file->parent = current_file;
337 current_file = file;
338}
339
340static void zconf_endfile(void)
341{
342 struct buffer *parent;
343
344 current_file = current_file->parent;
345
346 parent = current_buf->parent;
347 if (parent) {
348 fclose(yyin);
349 yy_delete_buffer(YY_CURRENT_BUFFER);
350 yy_switch_to_buffer(parent->state);
351 }
352 free(current_buf);
353 current_buf = parent;
354}
355
356int zconf_lineno(void)
357{
358 return current_pos.lineno;
359}
360
361const char *zconf_curname(void)
362{
363 return current_pos.file ? current_pos.file->name : "<none>";
364}