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 */
file_lookup(const char * name)14 struct 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 */
file_write_dep(const char * name)35 int 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 */
str_new(void)81 struct 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 /* Allocate and assign growable string */
str_assign(const char * s)92 struct gstr str_assign(const char *s)
93 {
94 struct gstr gs;
95 gs.s = strdup(s);
96 gs.len = strlen(s) + 1;
97 gs.max_width = 0;
98 return gs;
99 }
100
101 /* Free storage for growable string */
str_free(struct gstr * gs)102 void str_free(struct gstr *gs)
103 {
104 if (gs->s)
105 free(gs->s);
106 gs->s = NULL;
107 gs->len = 0;
108 }
109
110 /* Append to growable string */
str_append(struct gstr * gs,const char * s)111 void str_append(struct gstr *gs, const char *s)
112 {
113 size_t l;
114 if (s) {
115 l = strlen(gs->s) + strlen(s) + 1;
116 if (l > gs->len) {
117 gs->s = realloc(gs->s, l);
118 gs->len = l;
119 }
120 strcat(gs->s, s);
121 }
122 }
123
124 /* Append printf formatted string to growable string */
str_printf(struct gstr * gs,const char * fmt,...)125 void str_printf(struct gstr *gs, const char *fmt, ...)
126 {
127 va_list ap;
128 char s[10000]; /* big enough... */
129 va_start(ap, fmt);
130 vsnprintf(s, sizeof(s), fmt, ap);
131 str_append(gs, s);
132 va_end(ap);
133 }
134
135 /* Retrieve value of growable string */
str_get(struct gstr * gs)136 const char *str_get(struct gstr *gs)
137 {
138 return gs->s;
139 }
140
xmalloc(size_t size)141 void *xmalloc(size_t size)
142 {
143 void *p = malloc(size);
144 if (p)
145 return p;
146 fprintf(stderr, "Out of memory.\n");
147 exit(1);
148 }
149
xcalloc(size_t nmemb,size_t size)150 void *xcalloc(size_t nmemb, size_t size)
151 {
152 void *p = calloc(nmemb, size);
153 if (p)
154 return p;
155 fprintf(stderr, "Out of memory.\n");
156 exit(1);
157 }
158