mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
147 lines
2.9 KiB
C
147 lines
2.9 KiB
C
/*
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* Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
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* Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
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*
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* Released under the terms of the GNU GPL v2.0.
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*/
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include "lkc.h"
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/* file already present in list? If not add it */
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struct file *file_lookup(const char *name)
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{
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struct file *file;
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const char *file_name = sym_expand_string_value(name);
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for (file = file_list; file; file = file->next) {
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if (!strcmp(name, file->name)) {
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free((void *)file_name);
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return file;
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}
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}
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file = xmalloc(sizeof(*file));
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memset(file, 0, sizeof(*file));
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file->name = file_name;
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file->next = file_list;
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file_list = file;
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return file;
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}
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/* write a dependency file as used by kbuild to track dependencies */
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int file_write_dep(const char *name)
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{
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struct symbol *sym, *env_sym;
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struct expr *e;
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struct file *file;
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FILE *out;
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if (!name)
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name = ".kconfig.d";
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out = fopen("..config.tmp", "w");
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if (!out)
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return 1;
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fprintf(out, "deps_config := \\\n");
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for (file = file_list; file; file = file->next) {
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if (file->next)
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fprintf(out, "\t%s \\\n", file->name);
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else
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fprintf(out, "\t%s\n", file->name);
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}
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fprintf(out, "\n%s: \\\n"
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"\t$(deps_config)\n\n", conf_get_autoconfig_name());
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expr_list_for_each_sym(sym_env_list, e, sym) {
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struct property *prop;
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const char *value;
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prop = sym_get_env_prop(sym);
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env_sym = prop_get_symbol(prop);
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if (!env_sym)
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continue;
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value = getenv(env_sym->name);
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if (!value)
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value = "";
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fprintf(out, "ifneq \"$(%s)\" \"%s\"\n", env_sym->name, value);
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fprintf(out, "%s: FORCE\n", conf_get_autoconfig_name());
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fprintf(out, "endif\n");
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}
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fprintf(out, "\n$(deps_config): ;\n");
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fclose(out);
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rename("..config.tmp", name);
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return 0;
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}
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/* Allocate initial growable string */
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struct gstr str_new(void)
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{
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struct gstr gs;
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gs.s = xmalloc(sizeof(char) * 64);
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gs.len = 64;
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gs.max_width = 0;
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strcpy(gs.s, "\0");
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return gs;
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}
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/* Free storage for growable string */
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void str_free(struct gstr *gs)
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{
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if (gs->s)
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free(gs->s);
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gs->s = NULL;
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gs->len = 0;
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}
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/* Append to growable string */
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void str_append(struct gstr *gs, const char *s)
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{
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size_t l;
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if (s) {
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l = strlen(gs->s) + strlen(s) + 1;
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if (l > gs->len) {
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gs->s = realloc(gs->s, l);
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gs->len = l;
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}
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strcat(gs->s, s);
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}
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}
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/* Append printf formatted string to growable string */
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void str_printf(struct gstr *gs, const char *fmt, ...)
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{
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va_list ap;
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char s[10000]; /* big enough... */
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va_start(ap, fmt);
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vsnprintf(s, sizeof(s), fmt, ap);
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str_append(gs, s);
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va_end(ap);
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}
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/* Retrieve value of growable string */
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const char *str_get(struct gstr *gs)
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{
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return gs->s;
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}
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void *xmalloc(size_t size)
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{
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void *p = malloc(size);
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if (p)
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return p;
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fprintf(stderr, "Out of memory.\n");
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exit(1);
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}
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void *xcalloc(size_t nmemb, size_t size)
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{
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void *p = calloc(nmemb, size);
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if (p)
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return p;
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fprintf(stderr, "Out of memory.\n");
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exit(1);
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}
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