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,
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 */
61struct 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 */
71struct 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 */
80void str_free(struct gstr *gs)
81{
82	if (gs->s)
83		free(gs->s);
84	gs->s = NULL;
85	gs->len = 0;
86}
87
88/* Append to growable string */
89void str_append(struct gstr *gs, const char *s)
90{
91	size_t l = strlen(gs->s) + strlen(s) + 1;
92	if (l > gs->len) {
93		gs->s   = realloc(gs->s, l);
94		gs->len = l;
95	}
96	strcat(gs->s, s);
97}
98
99/* Append printf formatted string to growable string */
100void str_printf(struct gstr *gs, const char *fmt, ...)
101{
102	va_list ap;
103	char s[10000]; /* big enough... */
104	va_start(ap, fmt);
105	vsnprintf(s, sizeof(s), fmt, ap);
106	str_append(gs, s);
107	va_end(ap);
108}
109
110/* Retrieve value of growable string */
111const char *str_get(struct gstr *gs)
112{
113	return gs->s;
114}
115
116