#include "util.h"
#include "parse-options.h"
#include "cache.h"
#include "header.h"
#include <linux/string.h>
#define OPT_SHORT 1
#define OPT_UNSET 2
static struct strbuf error_buf = STRBUF_INIT;
static int opterror(const struct option *opt, const char *reason, int flags)
{
if (flags & OPT_SHORT)
return error("switch `%c' %s", opt->short_name, reason);
if (flags & OPT_UNSET)
return error("option `no-%s' %s", opt->long_name, reason);
return error("option `%s' %s", opt->long_name, reason);
}
static int get_arg(struct parse_opt_ctx_t *p, const struct option *opt,
int flags, const char **arg)
{
if (p->opt) {
*arg = p->opt;
p->opt = NULL;
} else if ((opt->flags & PARSE_OPT_LASTARG_DEFAULT) && (p->argc == 1 ||
**(p->argv + 1) == '-')) {
*arg = (const char *)opt->defval;
} else if (p->argc > 1) {
p->argc--;
*arg = *++p->argv;
} else
return opterror(opt, "requires a value", flags);
return 0;
}
static int get_value(struct parse_opt_ctx_t *p,
const struct option *opt, int flags)
{
const char *s, *arg = NULL;
const int unset = flags & OPT_UNSET;
int err;
if (unset && p->opt)
return opterror(opt, "takes no value", flags);
if (unset && (opt->flags & PARSE_OPT_NONEG))
return opterror(opt, "isn't available", flags);
if (opt->flags & PARSE_OPT_DISABLED)
return opterror(opt, "is not usable", flags);
if (opt->flags & PARSE_OPT_EXCLUSIVE) {
if (p->excl_opt && p->excl_opt != opt) {
char msg[128];
if (((flags & OPT_SHORT) && p->excl_opt->short_name) ||
p->excl_opt->long_name == NULL) {
scnprintf(msg, sizeof(msg), "cannot be used with switch `%c'",
p->excl_opt->short_name);
} else {
scnprintf(msg, sizeof(msg), "cannot be used with %s",
p->excl_opt->long_name);
}
opterror(opt, msg, flags);
return -3;
}
p->excl_opt = opt;
}
if (!(flags & OPT_SHORT) && p->opt) {
switch (opt->type) {
case OPTION_CALLBACK:
if (!(opt->flags & PARSE_OPT_NOARG))
break;
/* FALLTHROUGH */
case OPTION_BOOLEAN:
case OPTION_INCR:
case OPTION_BIT:
case OPTION_SET_UINT:
case OPTION_SET_PTR:
return opterror(opt, "takes no value", flags);
case OPTION_END:
case OPTION_ARGUMENT:
case OPTION_GROUP:
case OPTION_STRING:
case OPTION_INTEGER:
case OPTION_UINTEGER:
case OPTION_LONG:
case OPTION_U64:
default:
break;
}
}
switch (opt->type) {
case OPTION_BIT:
if (unset)
*(int *)opt->value &= ~opt->defval;
else
*(int *)opt->value |= opt->defval;
return 0;
case OPTION_BOOLEAN:
*(bool *)opt->value = unset ? false : true;
if (opt->set)
*(bool *)opt->set = true;
return 0;
case OPTION_INCR:
*(int *)opt->value = unset ? 0 : *(int *)opt->value + 1;
return 0;
case OPTION_SET_UINT:
*(unsigned int *)opt->value = unset ? 0 : opt->defval;
return 0;
case OPTION_SET_PTR:
*(void **)opt->value = unset ? NULL : (void *)opt->defval;
return 0;
case OPTION_STRING:
err = 0;
if (unset)
*(const char **)opt->value = NULL;
else if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
*(const char **)opt->value = (const char *)opt->defval;