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 symbol *sym, *env_sym;
33 struct expr *e;
34 struct file *file;
35 FILE *out;
36
37 if (!name)
38 name = ".kconfig.d";
39 out = fopen("..config.tmp", "w");
40 if (!out)
41 return 1;
42 fprintf(out, "deps_config := \\\n");
43 for (file = file_list; file; file = file->next) {
44 if (file->next)
45 fprintf(out, "\t%s \\\n", file->name);
46 else
47 fprintf(out, "\t%s\n", file->name);
48 }
49 fprintf(out, "\n%s: \\\n"
50 "\t$(deps_config)\n\n", conf_get_autoconfig_name());
51
52 expr_list_for_each_sym(sym_env_list, e, sym) {
53 struct property *prop;
54 const char *value;
55
56 prop = sym_get_env_prop(sym);
57 env_sym = prop_get_symbol(prop);
58 if (!env_sym)
59 continue;
60 value = getenv(env_sym->name);
61 if (!value)
62 value = "";
63 fprintf(out, "ifneq \"$(%s)\" \"%s\"\n", env_sym->name, value);
64 fprintf(out, "%s: FORCE\n", conf_get_autoconfig_name());
65 fprintf(out, "endif\n");
66 }
67
68 fprintf(out, "\n$(deps_config): ;\n");
69 fclose(out);
70 rename("..config.tmp", name);
71 return 0;
72 }
73
74
75 /* Allocate initial growable sting */
76 struct gstr str_new(void)
77 {
78 struct gstr gs;
79 gs.s = malloc(sizeof(char) * 64);
80 gs.len = 64;
81 strcpy(gs.s, "\0");
82 return gs;
83 }
84
85 /* Allocate and assign growable string */
86 struct gstr str_assign(const char *s)
87 {
88 struct gstr gs;
89 gs.s = strdup(s);
90 gs.len = strlen(s) + 1;
91 return gs;
92 }
93
94 /* Free storage for growable string */
95 void str_free(struct gstr *gs)
96 {
97 if (gs->s)
98 free(gs->s);
99 gs->s = NULL;
100 gs->len = 0;
101 }
102
103 /* Append to growable string */
104 void str_append(struct gstr *gs, const char *s)
105 {
106 size_t l;
107 if (s) {
108 l = strlen(gs->s) + strlen(s) + 1;
109 if (l > gs->len) {
110 gs->s = realloc(gs->s, l);
111 gs->len = l;
112 }
113 strcat(gs->s, s);
114 }
115 }
116
117 /* Append printf formatted string to growable string */
118 void str_printf(struct gstr *gs, const char *fmt, ...)
119 {
120 va_list ap;
121 char s[10000]; /* big enough... */
122 va_start(ap, fmt);
123 vsnprintf(s, sizeof(s), fmt, ap);
124 str_append(gs, s);
125 va_end(ap);
126 }
127
128 /* Retrieve value of growable string */
129 const char *str_get(struct gstr *gs)
130 {
131 return gs->s;
132 }
133
134
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