Viewing file:  util.c (2.19 KB) -rw-r--r--
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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 <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 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, "\ninclude/config/auto.conf: \\\n"
"\t$(deps_config)\n\n"
"$(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 = 16;
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;
}
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