mirror of
https://github.com/git/git.git
synced 2024-10-30 22:07:53 +01:00
56eb8b43eb
* jc/symbol-static: date.c: mark file-local function static Replace parse_blob() with an explanatory comment symlinks.c: remove unused functions object.c: remove unused functions strbuf.c: remove unused function sha1_file.c: remove unused function mailmap.c: remove unused function utf8.c: mark file-local function static submodule.c: mark file-local function static quote.c: mark file-local function static remote-curl.c: mark file-local function static read-cache.c: mark file-local functions static parse-options.c: mark file-local function static entry.c: mark file-local function static http.c: mark file-local functions static pretty.c: mark file-local function static builtin-rev-list.c: mark file-local function static bisect.c: mark file-local function static
645 lines
16 KiB
C
645 lines
16 KiB
C
#include "git-compat-util.h"
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#include "parse-options.h"
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#include "cache.h"
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#include "commit.h"
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static int parse_options_usage(const char * const *usagestr,
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const struct option *opts);
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#define OPT_SHORT 1
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#define OPT_UNSET 2
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static int opterror(const struct option *opt, const char *reason, int flags)
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{
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if (flags & OPT_SHORT)
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return error("switch `%c' %s", opt->short_name, reason);
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if (flags & OPT_UNSET)
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return error("option `no-%s' %s", opt->long_name, reason);
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return error("option `%s' %s", opt->long_name, reason);
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}
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static int get_arg(struct parse_opt_ctx_t *p, const struct option *opt,
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int flags, const char **arg)
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{
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if (p->opt) {
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*arg = p->opt;
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p->opt = NULL;
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} else if (p->argc == 1 && (opt->flags & PARSE_OPT_LASTARG_DEFAULT)) {
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*arg = (const char *)opt->defval;
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} else if (p->argc > 1) {
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p->argc--;
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*arg = *++p->argv;
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} else
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return opterror(opt, "requires a value", flags);
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return 0;
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}
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static void fix_filename(const char *prefix, const char **file)
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{
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if (!file || !*file || !prefix || is_absolute_path(*file)
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|| !strcmp("-", *file))
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return;
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*file = xstrdup(prefix_filename(prefix, strlen(prefix), *file));
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}
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static int get_value(struct parse_opt_ctx_t *p,
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const struct option *opt, int flags)
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{
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const char *s, *arg;
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const int unset = flags & OPT_UNSET;
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int err;
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if (unset && p->opt)
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return opterror(opt, "takes no value", flags);
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if (unset && (opt->flags & PARSE_OPT_NONEG))
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return opterror(opt, "isn't available", flags);
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if (!(flags & OPT_SHORT) && p->opt) {
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switch (opt->type) {
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case OPTION_CALLBACK:
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if (!(opt->flags & PARSE_OPT_NOARG))
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break;
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/* FALLTHROUGH */
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case OPTION_BOOLEAN:
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case OPTION_BIT:
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case OPTION_NEGBIT:
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case OPTION_SET_INT:
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case OPTION_SET_PTR:
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return opterror(opt, "takes no value", flags);
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default:
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break;
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}
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}
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switch (opt->type) {
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case OPTION_BIT:
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if (unset)
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*(int *)opt->value &= ~opt->defval;
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else
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*(int *)opt->value |= opt->defval;
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return 0;
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case OPTION_NEGBIT:
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if (unset)
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*(int *)opt->value |= opt->defval;
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else
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*(int *)opt->value &= ~opt->defval;
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return 0;
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case OPTION_BOOLEAN:
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*(int *)opt->value = unset ? 0 : *(int *)opt->value + 1;
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return 0;
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case OPTION_SET_INT:
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*(int *)opt->value = unset ? 0 : opt->defval;
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return 0;
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case OPTION_SET_PTR:
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*(void **)opt->value = unset ? NULL : (void *)opt->defval;
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return 0;
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case OPTION_STRING:
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if (unset)
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*(const char **)opt->value = NULL;
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else if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
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*(const char **)opt->value = (const char *)opt->defval;
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else
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return get_arg(p, opt, flags, (const char **)opt->value);
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return 0;
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case OPTION_FILENAME:
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err = 0;
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if (unset)
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*(const char **)opt->value = NULL;
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else if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
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*(const char **)opt->value = (const char *)opt->defval;
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else
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err = get_arg(p, opt, flags, (const char **)opt->value);
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if (!err)
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fix_filename(p->prefix, (const char **)opt->value);
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return err;
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case OPTION_CALLBACK:
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if (unset)
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return (*opt->callback)(opt, NULL, 1) ? (-1) : 0;
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if (opt->flags & PARSE_OPT_NOARG)
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return (*opt->callback)(opt, NULL, 0) ? (-1) : 0;
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if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
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return (*opt->callback)(opt, NULL, 0) ? (-1) : 0;
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if (get_arg(p, opt, flags, &arg))
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return -1;
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return (*opt->callback)(opt, arg, 0) ? (-1) : 0;
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case OPTION_INTEGER:
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if (unset) {
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*(int *)opt->value = 0;
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return 0;
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}
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if (opt->flags & PARSE_OPT_OPTARG && !p->opt) {
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*(int *)opt->value = opt->defval;
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return 0;
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}
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if (get_arg(p, opt, flags, &arg))
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return -1;
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*(int *)opt->value = strtol(arg, (char **)&s, 10);
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if (*s)
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return opterror(opt, "expects a numerical value", flags);
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return 0;
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default:
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die("should not happen, someone must be hit on the forehead");
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}
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}
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static int parse_short_opt(struct parse_opt_ctx_t *p, const struct option *options)
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{
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const struct option *numopt = NULL;
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for (; options->type != OPTION_END; options++) {
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if (options->short_name == *p->opt) {
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p->opt = p->opt[1] ? p->opt + 1 : NULL;
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return get_value(p, options, OPT_SHORT);
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}
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/*
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* Handle the numerical option later, explicit one-digit
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* options take precedence over it.
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*/
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if (options->type == OPTION_NUMBER)
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numopt = options;
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}
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if (numopt && isdigit(*p->opt)) {
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size_t len = 1;
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char *arg;
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int rc;
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while (isdigit(p->opt[len]))
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len++;
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arg = xmemdupz(p->opt, len);
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p->opt = p->opt[len] ? p->opt + len : NULL;
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rc = (*numopt->callback)(numopt, arg, 0) ? (-1) : 0;
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free(arg);
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return rc;
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}
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return -2;
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}
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static int parse_long_opt(struct parse_opt_ctx_t *p, const char *arg,
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const struct option *options)
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{
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const char *arg_end = strchr(arg, '=');
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const struct option *abbrev_option = NULL, *ambiguous_option = NULL;
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int abbrev_flags = 0, ambiguous_flags = 0;
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if (!arg_end)
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arg_end = arg + strlen(arg);
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for (; options->type != OPTION_END; options++) {
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const char *rest;
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int flags = 0;
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if (!options->long_name)
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continue;
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rest = skip_prefix(arg, options->long_name);
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if (options->type == OPTION_ARGUMENT) {
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if (!rest)
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continue;
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if (*rest == '=')
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return opterror(options, "takes no value", flags);
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if (*rest)
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continue;
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p->out[p->cpidx++] = arg - 2;
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return 0;
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}
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if (!rest) {
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/* abbreviated? */
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if (!strncmp(options->long_name, arg, arg_end - arg)) {
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is_abbreviated:
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if (abbrev_option) {
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/*
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* If this is abbreviated, it is
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* ambiguous. So when there is no
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* exact match later, we need to
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* error out.
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*/
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ambiguous_option = abbrev_option;
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ambiguous_flags = abbrev_flags;
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}
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if (!(flags & OPT_UNSET) && *arg_end)
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p->opt = arg_end + 1;
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abbrev_option = options;
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abbrev_flags = flags;
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continue;
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}
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/* negation allowed? */
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if (options->flags & PARSE_OPT_NONEG)
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continue;
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/* negated and abbreviated very much? */
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if (!prefixcmp("no-", arg)) {
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flags |= OPT_UNSET;
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goto is_abbreviated;
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}
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/* negated? */
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if (strncmp(arg, "no-", 3))
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continue;
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flags |= OPT_UNSET;
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rest = skip_prefix(arg + 3, options->long_name);
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/* abbreviated and negated? */
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if (!rest && !prefixcmp(options->long_name, arg + 3))
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goto is_abbreviated;
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if (!rest)
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continue;
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}
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if (*rest) {
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if (*rest != '=')
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continue;
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p->opt = rest + 1;
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}
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return get_value(p, options, flags);
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}
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if (ambiguous_option)
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return error("Ambiguous option: %s "
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"(could be --%s%s or --%s%s)",
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arg,
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(ambiguous_flags & OPT_UNSET) ? "no-" : "",
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ambiguous_option->long_name,
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(abbrev_flags & OPT_UNSET) ? "no-" : "",
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abbrev_option->long_name);
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if (abbrev_option)
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return get_value(p, abbrev_option, abbrev_flags);
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return -2;
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}
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static int parse_nodash_opt(struct parse_opt_ctx_t *p, const char *arg,
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const struct option *options)
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{
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for (; options->type != OPTION_END; options++) {
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if (!(options->flags & PARSE_OPT_NODASH))
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continue;
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if ((options->flags & PARSE_OPT_OPTARG) ||
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!(options->flags & PARSE_OPT_NOARG))
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die("BUG: dashless options don't support arguments");
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if (!(options->flags & PARSE_OPT_NONEG))
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die("BUG: dashless options don't support negation");
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if (options->long_name)
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die("BUG: dashless options can't be long");
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if (options->short_name == arg[0] && arg[1] == '\0')
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return get_value(p, options, OPT_SHORT);
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}
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return -2;
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}
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static void check_typos(const char *arg, const struct option *options)
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{
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if (strlen(arg) < 3)
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return;
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if (!prefixcmp(arg, "no-")) {
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error ("did you mean `--%s` (with two dashes ?)", arg);
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exit(129);
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}
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for (; options->type != OPTION_END; options++) {
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if (!options->long_name)
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continue;
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if (!prefixcmp(options->long_name, arg)) {
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error ("did you mean `--%s` (with two dashes ?)", arg);
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exit(129);
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}
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}
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}
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static void parse_options_check(const struct option *opts)
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{
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int err = 0;
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for (; opts->type != OPTION_END; opts++) {
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if ((opts->flags & PARSE_OPT_LASTARG_DEFAULT) &&
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(opts->flags & PARSE_OPT_OPTARG)) {
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if (opts->long_name) {
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error("`--%s` uses incompatible flags "
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"LASTARG_DEFAULT and OPTARG", opts->long_name);
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} else {
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error("`-%c` uses incompatible flags "
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"LASTARG_DEFAULT and OPTARG", opts->short_name);
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}
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err |= 1;
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}
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}
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if (err)
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exit(129);
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}
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void parse_options_start(struct parse_opt_ctx_t *ctx,
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int argc, const char **argv, const char *prefix,
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int flags)
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{
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memset(ctx, 0, sizeof(*ctx));
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ctx->argc = argc - 1;
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ctx->argv = argv + 1;
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ctx->out = argv;
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ctx->prefix = prefix;
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ctx->cpidx = ((flags & PARSE_OPT_KEEP_ARGV0) != 0);
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ctx->flags = flags;
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if ((flags & PARSE_OPT_KEEP_UNKNOWN) &&
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(flags & PARSE_OPT_STOP_AT_NON_OPTION))
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die("STOP_AT_NON_OPTION and KEEP_UNKNOWN don't go together");
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}
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static int usage_with_options_internal(const char * const *,
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const struct option *, int);
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int parse_options_step(struct parse_opt_ctx_t *ctx,
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const struct option *options,
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const char * const usagestr[])
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{
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int internal_help = !(ctx->flags & PARSE_OPT_NO_INTERNAL_HELP);
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parse_options_check(options);
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/* we must reset ->opt, unknown short option leave it dangling */
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ctx->opt = NULL;
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for (; ctx->argc; ctx->argc--, ctx->argv++) {
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const char *arg = ctx->argv[0];
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if (*arg != '-' || !arg[1]) {
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if (parse_nodash_opt(ctx, arg, options) == 0)
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continue;
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if (ctx->flags & PARSE_OPT_STOP_AT_NON_OPTION)
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break;
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ctx->out[ctx->cpidx++] = ctx->argv[0];
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continue;
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}
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if (arg[1] != '-') {
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ctx->opt = arg + 1;
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if (internal_help && *ctx->opt == 'h')
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return parse_options_usage(usagestr, options);
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switch (parse_short_opt(ctx, options)) {
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case -1:
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return parse_options_usage(usagestr, options);
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case -2:
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goto unknown;
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}
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if (ctx->opt)
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check_typos(arg + 1, options);
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while (ctx->opt) {
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if (internal_help && *ctx->opt == 'h')
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return parse_options_usage(usagestr, options);
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switch (parse_short_opt(ctx, options)) {
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case -1:
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return parse_options_usage(usagestr, options);
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case -2:
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/* fake a short option thing to hide the fact that we may have
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* started to parse aggregated stuff
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*
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* This is leaky, too bad.
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*/
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ctx->argv[0] = xstrdup(ctx->opt - 1);
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*(char *)ctx->argv[0] = '-';
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goto unknown;
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}
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}
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continue;
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}
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if (!arg[2]) { /* "--" */
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if (!(ctx->flags & PARSE_OPT_KEEP_DASHDASH)) {
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ctx->argc--;
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ctx->argv++;
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}
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break;
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}
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if (internal_help && !strcmp(arg + 2, "help-all"))
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return usage_with_options_internal(usagestr, options, 1);
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if (internal_help && !strcmp(arg + 2, "help"))
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return parse_options_usage(usagestr, options);
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switch (parse_long_opt(ctx, arg + 2, options)) {
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case -1:
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return parse_options_usage(usagestr, options);
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case -2:
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goto unknown;
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}
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continue;
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unknown:
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if (!(ctx->flags & PARSE_OPT_KEEP_UNKNOWN))
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return PARSE_OPT_UNKNOWN;
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ctx->out[ctx->cpidx++] = ctx->argv[0];
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ctx->opt = NULL;
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}
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return PARSE_OPT_DONE;
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}
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int parse_options_end(struct parse_opt_ctx_t *ctx)
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{
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memmove(ctx->out + ctx->cpidx, ctx->argv, ctx->argc * sizeof(*ctx->out));
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ctx->out[ctx->cpidx + ctx->argc] = NULL;
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return ctx->cpidx + ctx->argc;
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}
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int parse_options(int argc, const char **argv, const char *prefix,
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const struct option *options, const char * const usagestr[],
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int flags)
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{
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struct parse_opt_ctx_t ctx;
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parse_options_start(&ctx, argc, argv, prefix, flags);
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switch (parse_options_step(&ctx, options, usagestr)) {
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case PARSE_OPT_HELP:
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exit(129);
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case PARSE_OPT_DONE:
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break;
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default: /* PARSE_OPT_UNKNOWN */
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if (ctx.argv[0][1] == '-') {
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error("unknown option `%s'", ctx.argv[0] + 2);
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} else {
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error("unknown switch `%c'", *ctx.opt);
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}
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usage_with_options(usagestr, options);
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}
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return parse_options_end(&ctx);
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}
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static int usage_argh(const struct option *opts)
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{
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const char *s;
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int literal = (opts->flags & PARSE_OPT_LITERAL_ARGHELP) || !opts->argh;
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if (opts->flags & PARSE_OPT_OPTARG)
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if (opts->long_name)
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s = literal ? "[=%s]" : "[=<%s>]";
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else
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s = literal ? "[%s]" : "[<%s>]";
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else
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s = literal ? " %s" : " <%s>";
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return fprintf(stderr, s, opts->argh ? opts->argh : "...");
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}
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#define USAGE_OPTS_WIDTH 24
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#define USAGE_GAP 2
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static int usage_with_options_internal(const char * const *usagestr,
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const struct option *opts, int full)
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{
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if (!usagestr)
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return PARSE_OPT_HELP;
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fprintf(stderr, "usage: %s\n", *usagestr++);
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while (*usagestr && **usagestr)
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fprintf(stderr, " or: %s\n", *usagestr++);
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while (*usagestr) {
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fprintf(stderr, "%s%s\n",
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**usagestr ? " " : "",
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*usagestr);
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usagestr++;
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}
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if (opts->type != OPTION_GROUP)
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fputc('\n', stderr);
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|
|
for (; opts->type != OPTION_END; opts++) {
|
|
size_t pos;
|
|
int pad;
|
|
|
|
if (opts->type == OPTION_GROUP) {
|
|
fputc('\n', stderr);
|
|
if (*opts->help)
|
|
fprintf(stderr, "%s\n", opts->help);
|
|
continue;
|
|
}
|
|
if (!full && (opts->flags & PARSE_OPT_HIDDEN))
|
|
continue;
|
|
|
|
pos = fprintf(stderr, " ");
|
|
if (opts->short_name && !(opts->flags & PARSE_OPT_NEGHELP)) {
|
|
if (opts->flags & PARSE_OPT_NODASH)
|
|
pos += fprintf(stderr, "%c", opts->short_name);
|
|
else
|
|
pos += fprintf(stderr, "-%c", opts->short_name);
|
|
}
|
|
if (opts->long_name && opts->short_name)
|
|
pos += fprintf(stderr, ", ");
|
|
if (opts->long_name)
|
|
pos += fprintf(stderr, "--%s%s",
|
|
(opts->flags & PARSE_OPT_NEGHELP) ? "no-" : "",
|
|
opts->long_name);
|
|
if (opts->type == OPTION_NUMBER)
|
|
pos += fprintf(stderr, "-NUM");
|
|
|
|
if (!(opts->flags & PARSE_OPT_NOARG))
|
|
pos += usage_argh(opts);
|
|
|
|
if (pos <= USAGE_OPTS_WIDTH)
|
|
pad = USAGE_OPTS_WIDTH - pos;
|
|
else {
|
|
fputc('\n', stderr);
|
|
pad = USAGE_OPTS_WIDTH;
|
|
}
|
|
fprintf(stderr, "%*s%s\n", pad + USAGE_GAP, "", opts->help);
|
|
}
|
|
fputc('\n', stderr);
|
|
|
|
return PARSE_OPT_HELP;
|
|
}
|
|
|
|
void usage_with_options(const char * const *usagestr,
|
|
const struct option *opts)
|
|
{
|
|
usage_with_options_internal(usagestr, opts, 0);
|
|
exit(129);
|
|
}
|
|
|
|
void usage_msg_opt(const char *msg,
|
|
const char * const *usagestr,
|
|
const struct option *options)
|
|
{
|
|
fprintf(stderr, "%s\n\n", msg);
|
|
usage_with_options(usagestr, options);
|
|
}
|
|
|
|
static int parse_options_usage(const char * const *usagestr,
|
|
const struct option *opts)
|
|
{
|
|
return usage_with_options_internal(usagestr, opts, 0);
|
|
}
|
|
|
|
|
|
/*----- some often used options -----*/
|
|
#include "cache.h"
|
|
|
|
int parse_opt_abbrev_cb(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
int v;
|
|
|
|
if (!arg) {
|
|
v = unset ? 0 : DEFAULT_ABBREV;
|
|
} else {
|
|
v = strtol(arg, (char **)&arg, 10);
|
|
if (*arg)
|
|
return opterror(opt, "expects a numerical value", 0);
|
|
if (v && v < MINIMUM_ABBREV)
|
|
v = MINIMUM_ABBREV;
|
|
else if (v > 40)
|
|
v = 40;
|
|
}
|
|
*(int *)(opt->value) = v;
|
|
return 0;
|
|
}
|
|
|
|
int parse_opt_approxidate_cb(const struct option *opt, const char *arg,
|
|
int unset)
|
|
{
|
|
*(unsigned long *)(opt->value) = approxidate(arg);
|
|
return 0;
|
|
}
|
|
|
|
int parse_opt_verbosity_cb(const struct option *opt, const char *arg,
|
|
int unset)
|
|
{
|
|
int *target = opt->value;
|
|
|
|
if (unset)
|
|
/* --no-quiet, --no-verbose */
|
|
*target = 0;
|
|
else if (opt->short_name == 'v') {
|
|
if (*target >= 0)
|
|
(*target)++;
|
|
else
|
|
*target = 1;
|
|
} else {
|
|
if (*target <= 0)
|
|
(*target)--;
|
|
else
|
|
*target = -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int parse_opt_with_commit(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
unsigned char sha1[20];
|
|
struct commit *commit;
|
|
|
|
if (!arg)
|
|
return -1;
|
|
if (get_sha1(arg, sha1))
|
|
return error("malformed object name %s", arg);
|
|
commit = lookup_commit_reference(sha1);
|
|
if (!commit)
|
|
return error("no such commit %s", arg);
|
|
commit_list_insert(commit, opt->value);
|
|
return 0;
|
|
}
|
|
|
|
int parse_opt_tertiary(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
int *target = opt->value;
|
|
*target = unset ? 2 : 1;
|
|
return 0;
|
|
}
|