/branches/18.06.1/scripts/config/util.c |
@@ -0,0 +1,147 @@ |
/* |
* 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; |
const char *file_name = sym_expand_string_value(name); |
|
for (file = file_list; file; file = file->next) { |
if (!strcmp(name, file->name)) { |
free((void *)file_name); |
return file; |
} |
} |
|
file = xmalloc(sizeof(*file)); |
memset(file, 0, sizeof(*file)); |
file->name = file_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 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 = 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; |
} |
|
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); |
} |