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 */
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