Mercurial > hg > toybox
comparison kconfig/util.c @ 10:4d21d59f3206
Add menuconfig, plus some basic Config info, lots of which is just future
plans for toysh. Nothing's currently _using_ this config info, but at least
it's being generated now.
author | landley@driftwood |
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date | Tue, 31 Oct 2006 23:30:06 -0500 |
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-1:000000000000 | 10:4d21d59f3206 |
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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 /* write a dependency file as used by kbuild to track dependencies */ | |
30 int 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 */ | |
57 struct 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 */ | |
67 struct 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 */ | |
76 void 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 */ | |
85 void 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 */ | |
96 void 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 */ | |
107 const char *str_get(struct gstr *gs) | |
108 { | |
109 return gs->s; | |
110 } | |
111 |