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1/*
2 * Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
3 * Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
4 *
5 * Released under the terms of the GNU GPL v2.0.
6 */
7
8#include <stdarg.h>
9#include <stdlib.h>
10#include <string.h>
11#include "lkc.h"
12
13/* file already present in list? If not add it */
14struct file *file_lookup(const char *name)
15{
16 struct file *file;
17 const char *file_name = sym_expand_string_value(name);
18
19 for (file = file_list; file; file = file->next) {
20 if (!strcmp(name, file->name)) {
21 free((void *)file_name);
22 return file;
23 }
24 }
25
26 file = xmalloc(sizeof(*file));
27 memset(file, 0, sizeof(*file));
28 file->name = file_name;
29 file->next = file_list;
30 file_list = file;
31 return file;
32}
33
34/* write a dependency file as used by kbuild to track dependencies */
35int file_write_dep(const char *name)
36{
37 struct symbol *sym, *env_sym;
38 struct expr *e;
39 struct file *file;
40 FILE *out;
41
42 if (!name)
43 name = ".kconfig.d";
44 out = fopen("..config.tmp", "w");
45 if (!out)
46 return 1;
47 fprintf(out, "deps_config := \\\n");
48 for (file = file_list; file; file = file->next) {
49 if (file->next)
50 fprintf(out, "\t%s \\\n", file->name);
51 else
52 fprintf(out, "\t%s\n", file->name);
53 }
54 fprintf(out, "\n%s: \\\n"
55 "\t$(deps_config)\n\n", conf_get_autoconfig_name());
56
57 expr_list_for_each_sym(sym_env_list, e, sym) {
58 struct property *prop;
59 const char *value;
60
61 prop = sym_get_env_prop(sym);
62 env_sym = prop_get_symbol(prop);
63 if (!env_sym)
64 continue;
65 value = getenv(env_sym->name);
66 if (!value)
67 value = "";
68 fprintf(out, "ifneq \"$(%s)\" \"%s\"\n", env_sym->name, value);
69 fprintf(out, "%s: FORCE\n", conf_get_autoconfig_name());
70 fprintf(out, "endif\n");
71 }
72
73 fprintf(out, "\n$(deps_config): ;\n");
74 fclose(out);
75 rename("..config.tmp", name);
76 return 0;
77}
78
79
80/* Allocate initial growable string */
81struct gstr str_new(void)
82{
83 struct gstr gs;
84 gs.s = xmalloc(sizeof(char) * 64);
85 gs.len = 64;
86 gs.max_width = 0;
87 strcpy(gs.s, "\0");
88 return gs;
89}
90
91/* Free storage for growable string */
92void str_free(struct gstr *gs)
93{
94 if (gs->s)
95 free(gs->s);
96 gs->s = NULL;
97 gs->len = 0;
98}
99
100/* Append to growable string */
101void str_append(struct gstr *gs, const char *s)
102{
103 size_t l;
104 if (s) {
105 l = strlen(gs->s) + strlen(s) + 1;
106 if (l > gs->len) {
107 gs->s = realloc(gs->s, l);
108 gs->len = l;
109 }
110 strcat(gs->s, s);
111 }
112}
113
114/* Append printf formatted string to growable string */
115void str_printf(struct gstr *gs, const char *fmt, ...)
116{
117 va_list ap;
118 char s[10000]; /* big enough... */
119 va_start(ap, fmt);
120 vsnprintf(s, sizeof(s), fmt, ap);
121 str_append(gs, s);
122 va_end(ap);
123}
124
125/* Retrieve value of growable string */
126const char *str_get(struct gstr *gs)
127{
128 return gs->s;
129}
130
131void *xmalloc(size_t size)
132{
133 void *p = malloc(size);
134 if (p)
135 return p;
136 fprintf(stderr, "Out of memory.\n");
137 exit(1);
138}
139
140void *xcalloc(size_t nmemb, size_t size)
141{
142 void *p = calloc(nmemb, size);
143 if (p)
144 return p;
145 fprintf(stderr, "Out of memory.\n");
146 exit(1);
147}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
4 * Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
5 */
6
7#include <stdarg.h>
8#include <stdlib.h>
9#include <string.h>
10
11#include "hashtable.h"
12#include "lkc.h"
13
14unsigned int strhash(const char *s)
15{
16 /* fnv32 hash */
17 unsigned int hash = 2166136261U;
18
19 for (; *s; s++)
20 hash = (hash ^ *s) * 0x01000193;
21 return hash;
22}
23
24/* hash table of all parsed Kconfig files */
25static HASHTABLE_DEFINE(file_hashtable, 1U << 11);
26
27struct file {
28 struct hlist_node node;
29 char name[];
30};
31
32/* file already present in list? If not add it */
33const char *file_lookup(const char *name)
34{
35 struct file *file;
36 size_t len;
37 int hash = strhash(name);
38
39 hash_for_each_possible(file_hashtable, file, node, hash)
40 if (!strcmp(name, file->name))
41 return file->name;
42
43 len = strlen(name);
44 file = xmalloc(sizeof(*file) + len + 1);
45 memset(file, 0, sizeof(*file));
46 memcpy(file->name, name, len);
47 file->name[len] = '\0';
48
49 hash_add(file_hashtable, &file->node, hash);
50
51 str_printf(&autoconf_cmd, "\t%s \\\n", name);
52
53 return file->name;
54}
55
56/* Allocate initial growable string */
57struct gstr str_new(void)
58{
59 struct gstr gs;
60 gs.s = xmalloc(sizeof(char) * 64);
61 gs.len = 64;
62 gs.max_width = 0;
63 strcpy(gs.s, "\0");
64 return gs;
65}
66
67/* Free storage for growable string */
68void str_free(struct gstr *gs)
69{
70 free(gs->s);
71 gs->s = NULL;
72 gs->len = 0;
73}
74
75/* Append to growable string */
76void str_append(struct gstr *gs, const char *s)
77{
78 size_t l;
79 if (s) {
80 l = strlen(gs->s) + strlen(s) + 1;
81 if (l > gs->len) {
82 gs->s = xrealloc(gs->s, l);
83 gs->len = l;
84 }
85 strcat(gs->s, s);
86 }
87}
88
89/* Append printf formatted string to growable string */
90void str_printf(struct gstr *gs, const char *fmt, ...)
91{
92 va_list ap;
93 char s[10000]; /* big enough... */
94 va_start(ap, fmt);
95 vsnprintf(s, sizeof(s), fmt, ap);
96 str_append(gs, s);
97 va_end(ap);
98}
99
100/* Retrieve value of growable string */
101char *str_get(struct gstr *gs)
102{
103 return gs->s;
104}
105
106void *xmalloc(size_t size)
107{
108 void *p = malloc(size);
109 if (p)
110 return p;
111 fprintf(stderr, "Out of memory.\n");
112 exit(1);
113}
114
115void *xcalloc(size_t nmemb, size_t size)
116{
117 void *p = calloc(nmemb, size);
118 if (p)
119 return p;
120 fprintf(stderr, "Out of memory.\n");
121 exit(1);
122}
123
124void *xrealloc(void *p, size_t size)
125{
126 p = realloc(p, size);
127 if (p)
128 return p;
129 fprintf(stderr, "Out of memory.\n");
130 exit(1);
131}
132
133char *xstrdup(const char *s)
134{
135 char *p;
136
137 p = strdup(s);
138 if (p)
139 return p;
140 fprintf(stderr, "Out of memory.\n");
141 exit(1);
142}
143
144char *xstrndup(const char *s, size_t n)
145{
146 char *p;
147
148 p = strndup(s, n);
149 if (p)
150 return p;
151 fprintf(stderr, "Out of memory.\n");
152 exit(1);
153}