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 */
file_lookup(const char * name)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 */
file_write_dep(const char * name)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,
48 "\n"
49 ".config include/autoconf.h: $(deps_config)\n"
50 "\n"
51 "include/autoconf.h: .config\n" /* bbox */
52 "\n"
53 "$(deps_config):\n");
54 fclose(out);
55 rename("..config.tmp", name);
56 return 0;
57 }
58
59
60 /* Allocate initial growable string */
str_new(void)61 struct gstr str_new(void)
62 {
63 struct gstr gs;
64 gs.s = malloc(sizeof(char) * 64);
65 gs.len = 16;
66 strcpy(gs.s, "\0");
67 return gs;
68 }
69
70 /* Allocate and assign growable string */
str_assign(const char * s)71 struct gstr str_assign(const char *s)
72 {
73 struct gstr gs;
74 gs.s = strdup(s);
75 gs.len = strlen(s) + 1;
76 return gs;
77 }
78
79 /* Free storage for growable string */
str_free(struct gstr * gs)80 void str_free(struct gstr *gs)
81 {
82 free(gs->s);
83 gs->s = NULL;
84 gs->len = 0;
85 }
86
87 /* Append to growable string */
str_append(struct gstr * gs,const char * s)88 void str_append(struct gstr *gs, const char *s)
89 {
90 size_t l = strlen(gs->s) + strlen(s) + 1;
91 if (l > gs->len) {
92 gs->s = realloc(gs->s, l);
93 gs->len = l;
94 }
95 strcat(gs->s, s);
96 }
97
98 /* Append printf formatted string to growable string */
str_printf(struct gstr * gs,const char * fmt,...)99 void str_printf(struct gstr *gs, const char *fmt, ...)
100 {
101 va_list ap;
102 char s[10000]; /* big enough... */
103 va_start(ap, fmt);
104 vsnprintf(s, sizeof(s), fmt, ap);
105 str_append(gs, s);
106 va_end(ap);
107 }
108
109 /* Retrieve value of growable string */
str_get(struct gstr * gs)110 const char *str_get(struct gstr *gs)
111 {
112 return gs->s;
113 }
114