107f43a0f7
1) The field 'len' of the 'gstr' structure seems to track the size of the memory already allocated for the "growable string". So the value of this field should be the same as the 'malloc()' just above, shouldn't it ? Signed-off-by: Christophe Jaillet <christophe.jaillet@wanadoo.fr> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
133 lines
2.6 KiB
C
133 lines
2.6 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 <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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for (file = file_list; file; file = file->next) {
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if (!strcmp(name, file->name))
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return file;
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}
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file = malloc(sizeof(*file));
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memset(file, 0, sizeof(*file));
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file->name = strdup(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, "\ninclude/config/auto.conf: \\\n"
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"\t$(deps_config)\n\n");
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expr_list_for_each_sym(sym_env_list, e, sym) {
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struct property *prop;
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const char *value;
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prop = sym_get_env_prop(sym);
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env_sym = prop_get_symbol(prop);
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if (!env_sym)
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continue;
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value = getenv(env_sym->name);
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if (!value)
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value = "";
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fprintf(out, "ifneq \"$(%s)\" \"%s\"\n", env_sym->name, value);
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fprintf(out, "include/config/auto.conf: FORCE\n");
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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 sting */
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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 = malloc(sizeof(char) * 64);
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gs.len = 64;
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strcpy(gs.s, "\0");
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return gs;
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}
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/* Allocate and assign growable string */
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struct gstr str_assign(const char *s)
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{
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struct gstr gs;
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gs.s = strdup(s);
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gs.len = strlen(s) + 1;
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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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