don't generate .tmpconfig.h and .kconfig.d
[openwrt/svn-archive/archive.git] / scripts / config / util.c
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 <string.h>
9 #include "lkc.h"
10
11 /* file already present in list? If not add it */
12 struct file *file_lookup(const char *name)
13 {
14 struct file *file;
15
16 for (file = file_list; file; file = file->next) {
17 if (!strcmp(name, file->name))
18 return file;
19 }
20
21 file = malloc(sizeof(*file));
22 memset(file, 0, sizeof(*file));
23 file->name = strdup(name);
24 file->next = file_list;
25 file_list = file;
26 return file;
27 }
28
29 /* Allocate initial growable sting */
30 struct gstr str_new(void)
31 {
32 struct gstr gs;
33 gs.s = malloc(sizeof(char) * 64);
34 gs.len = 16;
35 strcpy(gs.s, "\0");
36 return gs;
37 }
38
39 /* Allocate and assign growable string */
40 struct gstr str_assign(const char *s)
41 {
42 struct gstr gs;
43 gs.s = strdup(s);
44 gs.len = strlen(s) + 1;
45 return gs;
46 }
47
48 /* Free storage for growable string */
49 void str_free(struct gstr *gs)
50 {
51 if (gs->s)
52 free(gs->s);
53 gs->s = NULL;
54 gs->len = 0;
55 }
56
57 /* Append to growable string */
58 void str_append(struct gstr *gs, const char *s)
59 {
60 size_t l = strlen(gs->s) + strlen(s) + 1;
61 if (l > gs->len) {
62 gs->s = realloc(gs->s, l);
63 gs->len = l;
64 }
65 strcat(gs->s, s);
66 }
67
68 /* Append printf formatted string to growable string */
69 void str_printf(struct gstr *gs, const char *fmt, ...)
70 {
71 va_list ap;
72 char s[10000]; /* big enough... */
73 va_start(ap, fmt);
74 vsnprintf(s, sizeof(s), fmt, ap);
75 str_append(gs, s);
76 va_end(ap);
77 }
78
79 /* Retrieve value of growable string */
80 const char *str_get(struct gstr *gs)
81 {
82 return gs->s;
83 }
84