projects/linux·blob v2.6.21 · refs

111 lines · 2.2 KiB

1/*
2 * Copyright (C) 2002-2005 Roman Zippel <[email protected]>
3 * Copyright (C) 2002-2005 Sam Ravnborg <[email protected]>
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 */
12struct 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/* write a dependency file as used by kbuild to track dependencies */
30int file_write_dep(const char *name)
31{
32 struct file *file;
33 FILE *out;
34
35 if (!name)
36 name = ".kconfig.d";
37 out = fopen("..config.tmp", "w");
38 if (!out)
39 return 1;
40 fprintf(out, "deps_config := \\\n");
41 for (file = file_list; file; file = file->next) {
42 if (file->next)
43 fprintf(out, "\t%s \\\n", file->name);
44 else
45 fprintf(out, "\t%s\n", file->name);
46 }
47 fprintf(out, "\ninclude/config/auto.conf: \\\n"
48 "\t$(deps_config)\n\n"
49 "$(deps_config): ;\n");
50 fclose(out);
51 rename("..config.tmp", name);
52 return 0;
53}
54
55
56/* Allocate initial growable sting */
57struct gstr str_new(void)
58{
59 struct gstr gs;
60 gs.s = malloc(sizeof(char) * 64);
61 gs.len = 16;
62 strcpy(gs.s, "\0");
63 return gs;
64}
65
66/* Allocate and assign growable string */
67struct gstr str_assign(const char *s)
68{
69 struct gstr gs;
70 gs.s = strdup(s);
71 gs.len = strlen(s) + 1;
72 return gs;
73}
74
75/* Free storage for growable string */
76void str_free(struct gstr *gs)
77{
78 if (gs->s)
79 free(gs->s);
80 gs->s = NULL;
81 gs->len = 0;
82}
83
84/* Append to growable string */
85void str_append(struct gstr *gs, const char *s)
86{
87 size_t l = strlen(gs->s) + strlen(s) + 1;
88 if (l > gs->len) {
89 gs->s = realloc(gs->s, l);
90 gs->len = l;
91 }
92 strcat(gs->s, s);
93}
94
95/* Append printf formatted string to growable string */
96void str_printf(struct gstr *gs, const char *fmt, ...)
97{
98 va_list ap;
99 char s[10000]; /* big enough... */
100 va_start(ap, fmt);
101 vsnprintf(s, sizeof(s), fmt, ap);
102 str_append(gs, s);
103 va_end(ap);
104}
105
106/* Retrieve value of growable string */
107const char *str_get(struct gstr *gs)
108{
109 return gs->s;
110}
111