[net-next-2.6.git] / scripts / kconfig / util.c

/*
 * Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
 * Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
 *
 * Released under the terms of the GNU GPL v2.0.
 */

#include <string.h>
#include "lkc.h"

/* file already present in list? If not add it */
struct file *file_lookup(const char *name)
{
	struct file *file;

	for (file = file_list; file; file = file->next) {
		if (!strcmp(name, file->name))
			return file;
	}

	file = malloc(sizeof(*file));
	memset(file, 0, sizeof(*file));
	file->name = strdup(name);
	file->next = file_list;
	file_list = file;
	return file;
}

/* write a dependency file as used by kbuild to track dependencies */
int file_write_dep(const char *name)
{
	struct symbol *sym, *env_sym;
	struct expr *e;
	struct file *file;
	FILE *out;

	if (!name)
		name = ".kconfig.d";
	out = fopen("..config.tmp", "w");
	if (!out)
		return 1;
	fprintf(out, "deps_config := \\\n");
	for (file = file_list; file; file = file->next) {
		if (file->next)
			fprintf(out, "\t%s \\\n", file->name);
		else
			fprintf(out, "\t%s\n", file->name);
	}
	fprintf(out, "\n%s: \\\n"
		     "\t$(deps_config)\n\n", conf_get_autoconfig_name());

	expr_list_for_each_sym(sym_env_list, e, sym) {
		struct property *prop;
		const char *value;

		prop = sym_get_env_prop(sym);
		env_sym = prop_get_symbol(prop);
		if (!env_sym)
			continue;
		value = getenv(env_sym->name);
		if (!value)
			value = "";
		fprintf(out, "ifneq \"$(%s)\" \"%s\"\n", env_sym->name, value);
		fprintf(out, "%s: FORCE\n", conf_get_autoconfig_name());
		fprintf(out, "endif\n");
	}

	fprintf(out, "\n$(deps_config): ;\n");
	fclose(out);
	rename("..config.tmp", name);
	return 0;
}


/* Allocate initial growable sting */
struct gstr str_new(void)
{
	struct gstr gs;
	gs.s = malloc(sizeof(char) * 64);
	gs.len = 64;
	strcpy(gs.s, "\0");
	return gs;
}

/* Allocate and assign growable string */
struct gstr str_assign(const char *s)
{
	struct gstr gs;
	gs.s = strdup(s);
	gs.len = strlen(s) + 1;
	return gs;
}

/* Free storage for growable string */
void str_free(struct gstr *gs)
{
	if (gs->s)
		free(gs->s);
	gs->s = NULL;
	gs->len = 0;
}

/* Append to growable string */
void str_append(struct gstr *gs, const char *s)
{
	size_t l;
	if (s) {
		l = strlen(gs->s) + strlen(s) + 1;
		if (l > gs->len) {
			gs->s   = realloc(gs->s, l);
			gs->len = l;
		}
		strcat(gs->s, s);
	}
}

/* Append printf formatted string to growable string */
void str_printf(struct gstr *gs, const char *fmt, ...)
{
	va_list ap;
	char s[10000]; /* big enough... */
	va_start(ap, fmt);
	vsnprintf(s, sizeof(s), fmt, ap);
	str_append(gs, s);
	va_end(ap);
}

/* Retrieve value of growable string */
const char *str_get(struct gstr *gs)
{
	return gs->s;
}
Commit	Line	Data
1da177e4 LT	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	{
93449082 RZ	32	struct symbol sym, env_sym;
93449082 RZ	33	struct expr *e;
1da177e4 LT	34	struct file *file;
	35	FILE *out;
	36
	37	if (!name)
752625cf	38	name = ".kconfig.d";
1da177e4 LT	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	}
12122f62 MH	49	fprintf(out, "\n%s: \\\n"
12122f62 MH	50	"\t$(deps_config)\n\n", conf_get_autoconfig_name());
93449082 RZ	51
	52	expr_list_for_each_sym(sym_env_list, e, sym) {
	53	struct property *prop;
	54	const char *value;
	55
	56	prop = sym_get_env_prop(sym);
	57	env_sym = prop_get_symbol(prop);
	58	if (!env_sym)
	59	continue;
	60	value = getenv(env_sym->name);
	61	if (!value)
	62	value = "";
	63	fprintf(out, "ifneq \"$(%s)\" \"%s\"\n", env_sym->name, value);
12122f62	64	fprintf(out, "%s: FORCE\n", conf_get_autoconfig_name());
93449082 RZ	65	fprintf(out, "endif\n");
	66	}
	67
	68	fprintf(out, "\n$(deps_config): ;\n");
1da177e4 LT	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);
107f43a0	80	gs.len = 64;
1da177e4 LT	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	{
a67cb131 SR	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);
1da177e4	114	}
1da177e4 LT	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
4a4efbde	128	/* Retrieve value of growable string */
1da177e4 LT	129	const char str_get(struct gstr gs)
	130	{
	131	return gs->s;
	132	}
	133