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/* * 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 <stdarg.h>#include <stdlib.h>#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 = xmalloc(sizeof(*file));	memset(file, 0, sizeof(*file));	file->name = xstrdup(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 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$(deps_config)\n\n", conf_get_autoconfig_name()); 	env_write_dep(out, conf_get_autoconfig_name()); 	fprintf(out, "\n$(deps_config): ;\n");	fclose(out);	rename("..config.tmp", name);	return 0;}  /* Allocate initial growable string */struct gstr str_new(void){	struct gstr gs;	gs.s = xmalloc(sizeof(char) * 64);	gs.len = 64;	gs.max_width = 0;	strcpy(gs.s, "\0");	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 = xrealloc(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;} void *xmalloc(size_t size){	void *p = malloc(size);	if (p)		return p;	fprintf(stderr, "Out of memory.\n");	exit(1);} void *xcalloc(size_t nmemb, size_t size){	void *p = calloc(nmemb, size);	if (p)		return p;	fprintf(stderr, "Out of memory.\n");	exit(1);} void *xrealloc(void *p, size_t size){	p = realloc(p, size);	if (p)		return p;	fprintf(stderr, "Out of memory.\n");	exit(1);} char *xstrdup(const char *s){	char *p; 	p = strdup(s);	if (p)		return p;	fprintf(stderr, "Out of memory.\n");	exit(1);} char *xstrndup(const char *s, size_t n){	char *p; 	p = strndup(s, n);	if (p)		return p;	fprintf(stderr, "Out of memory.\n");	exit(1);}