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 char tmpf[PATH_MAX+1];
41 FILE *out;
42
43 if (!name)
44 name = ".kconfig.d";
45 strcpy(tmpf, name);
46 dir_name(tmpf);
47 strcat(tmpf, "..config.tmp");
48 out = fopen(tmpf, "w");
49 if (!out)
50 return 1;
51 fprintf(out, "deps_config := \\\n");
52 for (file = file_list; file; file = file->next) {
53 if (file->next)
54 fprintf(out, "\t%s \\\n", file->name);
55 else
56 fprintf(out, "\t%s\n", file->name);
57 }
58 fprintf(out, "\n%s: \\\n"
59 "\t$(deps_config)\n\n", conf_get_autoconfig_name());
60
61 expr_list_for_each_sym(sym_env_list, e, sym) {
62 struct property *prop;
63 const char *value;
64
65 prop = sym_get_env_prop(sym);
66 env_sym = prop_get_symbol(prop);
67 if (!env_sym)
68 continue;
69 value = getenv(env_sym->name);
70 if (!value)
71 value = "";
72 fprintf(out, "ifneq \"$(%s)\" \"%s\"\n", env_sym->name, value);
73 fprintf(out, "%s: FORCE\n", conf_get_autoconfig_name());
74 fprintf(out, "endif\n");
75 }
76
77 fprintf(out, "\n$(deps_config): ;\n");
78 fclose(out);
79 rename(tmpf, name);
80 return 0;
81 }
82
83
84 /* Allocate initial growable string */
str_new(void)85 struct gstr str_new(void)
86 {
87 struct gstr gs;
88 gs.s = xmalloc(sizeof(char) * 64);
89 gs.len = 64;
90 gs.max_width = 0;
91 strcpy(gs.s, "\0");
92 return gs;
93 }
94
95 /* Allocate and assign growable string */
str_assign(const char * s)96 struct gstr str_assign(const char *s)
97 {
98 struct gstr gs;
99 gs.s = strdup(s);
100 gs.len = strlen(s) + 1;
101 gs.max_width = 0;
102 return gs;
103 }
104
105 /* Free storage for growable string */
str_free(struct gstr * gs)106 void str_free(struct gstr *gs)
107 {
108 if (gs->s)
109 free(gs->s);
110 gs->s = NULL;
111 gs->len = 0;
112 }
113
114 /* Append to growable string */
str_append(struct gstr * gs,const char * s)115 void str_append(struct gstr *gs, const char *s)
116 {
117 size_t l;
118 if (s) {
119 l = strlen(gs->s) + strlen(s) + 1;
120 if (l > gs->len) {
121 gs->s = realloc(gs->s, l);
122 gs->len = l;
123 }
124 strcat(gs->s, s);
125 }
126 }
127
128 /* Append printf formatted string to growable string */
str_printf(struct gstr * gs,const char * fmt,...)129 void str_printf(struct gstr *gs, const char *fmt, ...)
130 {
131 va_list ap;
132 char s[10000]; /* big enough... */
133 va_start(ap, fmt);
134 vsnprintf(s, sizeof(s), fmt, ap);
135 str_append(gs, s);
136 va_end(ap);
137 }
138
139 /* Retrieve value of growable string */
str_get(struct gstr * gs)140 const char *str_get(struct gstr *gs)
141 {
142 return gs->s;
143 }
144
xmalloc(size_t size)145 void *xmalloc(size_t size)
146 {
147 void *p = malloc(size);
148 if (p)
149 return p;
150 fprintf(stderr, "Out of memory.\n");
151 exit(1);
152 }
153
xcalloc(size_t nmemb,size_t size)154 void *xcalloc(size_t nmemb, size_t size)
155 {
156 void *p = calloc(nmemb, size);
157 if (p)
158 return p;
159 fprintf(stderr, "Out of memory.\n");
160 exit(1);
161 }
162
163 /* basename, dirname - parse pathname components */
dir_name(char * path)164 char *dir_name(char *path)
165 {
166 char *slash = strrchr(path, '/');
167 int size = 0;
168 if (slash)
169 size = slash - path + 1;
170 path[size] = 0;
171 return path;
172 }
base_name(char * path)173 char *base_name(char *path)
174 {
175 char *slash = strrchr(path, '/');
176 if (slash)
177 path += slash - path + 1;
178 return path;
179
180 }
181
182