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 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(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 char *str;
38 char buf[PATH_MAX+20], buf2[PATH_MAX+1], dir[PATH_MAX+1];
39 struct symbol *sym, *env_sym;
40 struct expr *e;
41 struct file *file;
42 FILE *out;
43
44 if (!name)
45 name = ".kconfig.d";
46
47 strcpy(dir, conf_get_configname());
48 str = strrchr(dir, '/');
49 if (str)
50 str[1] = 0;
51 else
52 dir[0] = 0;
53
54 sprintf(buf, "%s..config.tmp", dir);
55 out = fopen(buf, "w");
56 if (!out)
57 return 1;
58 fprintf(out, "deps_config := \\\n");
59 for (file = file_list; file; file = file->next) {
60 if (file->next)
61 fprintf(out, "\t%s \\\n", file->name);
62 else
63 fprintf(out, "\t%s\n", file->name);
64 }
65 fprintf(out, "\n%s: \\\n"
66 "\t$(deps_config)\n\n", conf_get_autoconfig_name());
67
68 expr_list_for_each_sym(sym_env_list, e, sym) {
69 struct property *prop;
70 const char *value;
71
72 prop = sym_get_env_prop(sym);
73 env_sym = prop_get_symbol(prop);
74 if (!env_sym)
75 continue;
76 value = getenv(env_sym->name);
77 if (!value)
78 value = "";
79 fprintf(out, "ifneq \"$(%s)\" \"%s\"\n", env_sym->name, value);
80 fprintf(out, "%s: FORCE\n", conf_get_autoconfig_name());
81 fprintf(out, "endif\n");
82 }
83
84 fprintf(out, "\n$(deps_config): ;\n");
85 fclose(out);
86 sprintf(buf2, "%s%s", dir, name);
87 rename(buf, buf2);
88 return 0;
89 }
90
91
92 /* Allocate initial growable string */
str_new(void)93 struct gstr str_new(void)
94 {
95 struct gstr gs;
96 gs.s = xmalloc(sizeof(char) * 64);
97 gs.len = 64;
98 gs.max_width = 0;
99 strcpy(gs.s, "\0");
100 return gs;
101 }
102
103 /* Free storage for growable string */
str_free(struct gstr * gs)104 void str_free(struct gstr *gs)
105 {
106 if (gs->s)
107 free(gs->s);
108 gs->s = NULL;
109 gs->len = 0;
110 }
111
112 /* Append to growable string */
str_append(struct gstr * gs,const char * s)113 void str_append(struct gstr *gs, const char *s)
114 {
115 size_t l;
116 if (s) {
117 l = strlen(gs->s) + strlen(s) + 1;
118 if (l > gs->len) {
119 gs->s = xrealloc(gs->s, l);
120 gs->len = l;
121 }
122 strcat(gs->s, s);
123 }
124 }
125
126 /* Append printf formatted string to growable string */
str_printf(struct gstr * gs,const char * fmt,...)127 void str_printf(struct gstr *gs, const char *fmt, ...)
128 {
129 va_list ap;
130 char s[10000]; /* big enough... */
131 va_start(ap, fmt);
132 vsnprintf(s, sizeof(s), fmt, ap);
133 str_append(gs, s);
134 va_end(ap);
135 }
136
137 /* Retrieve value of growable string */
str_get(struct gstr * gs)138 const char *str_get(struct gstr *gs)
139 {
140 return gs->s;
141 }
142
xmalloc(size_t size)143 void *xmalloc(size_t size)
144 {
145 void *p = malloc(size);
146 if (p)
147 return p;
148 fprintf(stderr, "Out of memory.\n");
149 exit(1);
150 }
151
xcalloc(size_t nmemb,size_t size)152 void *xcalloc(size_t nmemb, size_t size)
153 {
154 void *p = calloc(nmemb, size);
155 if (p)
156 return p;
157 fprintf(stderr, "Out of memory.\n");
158 exit(1);
159 }
160
xrealloc(void * p,size_t size)161 void *xrealloc(void *p, size_t size)
162 {
163 p = realloc(p, size);
164 if (p)
165 return p;
166 fprintf(stderr, "Out of memory.\n");
167 exit(1);
168 }
169
xstrdup(const char * s)170 char *xstrdup(const char *s)
171 {
172 char *p;
173
174 p = strdup(s);
175 if (p)
176 return p;
177 fprintf(stderr, "Out of memory.\n");
178 exit(1);
179 }
180