yann@1: /*
yann@1:  * Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
yann@1:  * Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
yann@1:  *
yann@1:  * Released under the terms of the GNU GPL v2.0.
yann@1:  */
yann@1: 
yann@1: #include <string.h>
yann@1: #include "lkc.h"
yann@1: 
yann@1: /* file already present in list? If not add it */
yann@1: struct file *file_lookup(const char *name)
yann@1: {
yann@1: 	struct file *file;
yann@1: 
yann@1: 	for (file = file_list; file; file = file->next) {
yann@1: 		if (!strcmp(name, file->name))
yann@1: 			return file;
yann@1: 	}
yann@1: 
yann@1: 	file = malloc(sizeof(*file));
yann@1: 	memset(file, 0, sizeof(*file));
yann@1: 	file->name = strdup(name);
yann@1: 	file->next = file_list;
yann@1: 	file_list = file;
yann@1: 	return file;
yann@1: }
yann@1: 
yann@1: /* write a dependency file as used by kbuild to track dependencies */
yann@1: int file_write_dep(const char *name)
yann@1: {
yann@1: 	struct file *file;
yann@1: 	FILE *out;
yann@1: 
yann@1: 	if (!name)
yann@1: 		name = ".kconfig.d";
yann@1: 	out = fopen("..config.tmp", "w");
yann@1: 	if (!out)
yann@1: 		return 1;
yann@1: 	fprintf(out, "deps_config := \\\n");
yann@1: 	for (file = file_list; file; file = file->next) {
yann@1: 		if (file->next)
yann@1: 			fprintf(out, "\t%s \\\n", file->name);
yann@1: 		else
yann@1: 			fprintf(out, "\t%s\n", file->name);
yann@1: 	}
yann@1: 	fprintf(out, "\ninclude/config/auto.conf: \\\n"
yann@1: 		     "\t$(deps_config)\n\n"
yann@1: 		     "$(deps_config): ;\n");
yann@1: 	fclose(out);
yann@1: 	rename("..config.tmp", name);
yann@1: 	return 0;
yann@1: }
yann@1: 
yann@1: 
yann@1: /* Allocate initial growable sting */
yann@1: struct gstr str_new(void)
yann@1: {
yann@1: 	struct gstr gs;
yann@1: 	gs.s = malloc(sizeof(char) * 64);
yann@1: 	gs.len = 16;
yann@1: 	strcpy(gs.s, "\0");
yann@1: 	return gs;
yann@1: }
yann@1: 
yann@1: /* Allocate and assign growable string */
yann@1: struct gstr str_assign(const char *s)
yann@1: {
yann@1: 	struct gstr gs;
yann@1: 	gs.s = strdup(s);
yann@1: 	gs.len = strlen(s) + 1;
yann@1: 	return gs;
yann@1: }
yann@1: 
yann@1: /* Free storage for growable string */
yann@1: void str_free(struct gstr *gs)
yann@1: {
yann@1: 	if (gs->s)
yann@1: 		free(gs->s);
yann@1: 	gs->s = NULL;
yann@1: 	gs->len = 0;
yann@1: }
yann@1: 
yann@1: /* Append to growable string */
yann@1: void str_append(struct gstr *gs, const char *s)
yann@1: {
yann@1: 	size_t l = strlen(gs->s) + strlen(s) + 1;
yann@1: 	if (l > gs->len) {
yann@1: 		gs->s   = realloc(gs->s, l);
yann@1: 		gs->len = l;
yann@1: 	}
yann@1: 	strcat(gs->s, s);
yann@1: }
yann@1: 
yann@1: /* Append printf formatted string to growable string */
yann@1: void str_printf(struct gstr *gs, const char *fmt, ...)
yann@1: {
yann@1: 	va_list ap;
yann@1: 	char s[10000]; /* big enough... */
yann@1: 	va_start(ap, fmt);
yann@1: 	vsnprintf(s, sizeof(s), fmt, ap);
yann@1: 	str_append(gs, s);
yann@1: 	va_end(ap);
yann@1: }
yann@1: 
yann@1: /* Retrieve value of growable string */
yann@1: const char *str_get(struct gstr *gs)
yann@1: {
yann@1: 	return gs->s;
yann@1: }
yann@1: