blob: 6330cc871a471495e6820be441c96ea61c6886a1 [file] [log] [blame]
Kevin O'Connora4c5daf2011-01-24 22:13:58 -05001/*
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 */
12struct file *file_lookup(const char *name)
13{
14 struct file *file;
15 const char *file_name = sym_expand_string_value(name);
16
17 for (file = file_list; file; file = file->next) {
18 if (!strcmp(name, file->name)) {
19 free((void *)file_name);
20 return file;
21 }
22 }
23
24 file = malloc(sizeof(*file));
25 memset(file, 0, sizeof(*file));
26 file->name = file_name;
27 file->next = file_list;
28 file_list = file;
29 return file;
30}
31
32/* write a dependency file as used by kbuild to track dependencies */
33int file_write_dep(const char *name)
34{
35 struct symbol *sym, *env_sym;
36 struct expr *e;
37 struct file *file;
38 FILE *out;
39
40 if (!name)
41 name = ".kconfig.d";
42 out = fopen("..config.tmp", "w");
43 if (!out)
44 return 1;
45 fprintf(out, "deps_config := \\\n");
46 for (file = file_list; file; file = file->next) {
47 if (file->next)
48 fprintf(out, "\t%s \\\n", file->name);
49 else
50 fprintf(out, "\t%s\n", file->name);
51 }
52 fprintf(out, "\n%s: \\\n"
53 "\t$(deps_config)\n\n", conf_get_autoconfig_name());
54
55 expr_list_for_each_sym(sym_env_list, e, sym) {
56 struct property *prop;
57 const char *value;
58
59 prop = sym_get_env_prop(sym);
60 env_sym = prop_get_symbol(prop);
61 if (!env_sym)
62 continue;
63 value = getenv(env_sym->name);
64 if (!value)
65 value = "";
66 fprintf(out, "ifneq \"$(%s)\" \"%s\"\n", env_sym->name, value);
67 fprintf(out, "%s: FORCE\n", conf_get_autoconfig_name());
68 fprintf(out, "endif\n");
69 }
70
71 fprintf(out, "\n$(deps_config): ;\n");
72 fclose(out);
73 rename("..config.tmp", name);
74 return 0;
75}
76
77
78/* Allocate initial growable string */
79struct gstr str_new(void)
80{
81 struct gstr gs;
82 gs.s = malloc(sizeof(char) * 64);
83 gs.len = 64;
84 gs.max_width = 0;
85 strcpy(gs.s, "\0");
86 return gs;
87}
88
89/* Allocate and assign growable string */
90struct gstr str_assign(const char *s)
91{
92 struct gstr gs;
93 gs.s = strdup(s);
94 gs.len = strlen(s) + 1;
95 gs.max_width = 0;
96 return gs;
97}
98
99/* Free storage for growable string */
100void str_free(struct gstr *gs)
101{
102 if (gs->s)
103 free(gs->s);
104 gs->s = NULL;
105 gs->len = 0;
106}
107
108/* Append to growable string */
109void str_append(struct gstr *gs, const char *s)
110{
111 size_t l;
112 if (s) {
113 l = strlen(gs->s) + strlen(s) + 1;
114 if (l > gs->len) {
115 gs->s = realloc(gs->s, l);
116 gs->len = l;
117 }
118 strcat(gs->s, s);
119 }
120}
121
122/* Append printf formatted string to growable string */
123void str_printf(struct gstr *gs, const char *fmt, ...)
124{
125 va_list ap;
126 char s[10000]; /* big enough... */
127 va_start(ap, fmt);
128 vsnprintf(s, sizeof(s), fmt, ap);
129 str_append(gs, s);
130 va_end(ap);
131}
132
133/* Retrieve value of growable string */
134const char *str_get(struct gstr *gs)
135{
136 return gs->s;
137}
138