123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014 |
- #include "git-compat-util.h"
- #include "parse-options.h"
- #include "cache.h"
- #include "config.h"
- #include "commit.h"
- #include "color.h"
- #include "utf8.h"
- static int disallow_abbreviated_options;
- #define OPT_SHORT 1
- #define OPT_UNSET 2
- int optbug(const struct option *opt, const char *reason)
- {
- if (opt->long_name) {
- if (opt->short_name)
- return error("BUG: switch '%c' (--%s) %s",
- opt->short_name, opt->long_name, reason);
- return error("BUG: option '%s' %s", opt->long_name, reason);
- }
- return error("BUG: switch '%c' %s", opt->short_name, reason);
- }
- static enum parse_opt_result 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 (p->argc == 1 && (opt->flags & PARSE_OPT_LASTARG_DEFAULT)) {
- *arg = (const char *)opt->defval;
- } else if (p->argc > 1) {
- p->argc--;
- *arg = *++p->argv;
- } else
- return error(_("%s requires a value"), optname(opt, flags));
- return 0;
- }
- static void fix_filename(const char *prefix, const char **file)
- {
- if (!file || !*file || !prefix || is_absolute_path(*file)
- || !strcmp("-", *file))
- return;
- *file = prefix_filename(prefix, *file);
- }
- static enum parse_opt_result opt_command_mode_error(
- const struct option *opt,
- const struct option *all_opts,
- int flags)
- {
- const struct option *that;
- struct strbuf that_name = STRBUF_INIT;
- /*
- * Find the other option that was used to set the variable
- * already, and report that this is not compatible with it.
- */
- for (that = all_opts; that->type != OPTION_END; that++) {
- if (that == opt ||
- !(that->flags & PARSE_OPT_CMDMODE) ||
- that->value != opt->value ||
- that->defval != *(int *)opt->value)
- continue;
- if (that->long_name)
- strbuf_addf(&that_name, "--%s", that->long_name);
- else
- strbuf_addf(&that_name, "-%c", that->short_name);
- error(_("%s is incompatible with %s"),
- optname(opt, flags), that_name.buf);
- strbuf_release(&that_name);
- return PARSE_OPT_ERROR;
- }
- return error(_("%s : incompatible with something else"),
- optname(opt, flags));
- }
- static enum parse_opt_result get_value(struct parse_opt_ctx_t *p,
- const struct option *opt,
- const struct option *all_opts,
- int flags)
- {
- const char *s, *arg;
- const int unset = flags & OPT_UNSET;
- int err;
- if (unset && p->opt)
- return error(_("%s takes no value"), optname(opt, flags));
- if (unset && (opt->flags & PARSE_OPT_NONEG))
- return error(_("%s isn't available"), optname(opt, flags));
- if (!(flags & OPT_SHORT) && p->opt && (opt->flags & PARSE_OPT_NOARG))
- return error(_("%s takes no value"), optname(opt, flags));
- /*
- * Giving the same mode option twice, although unnecessary,
- * is not a grave error, so let it pass.
- */
- if ((opt->flags & PARSE_OPT_CMDMODE) &&
- *(int *)opt->value && *(int *)opt->value != opt->defval)
- return opt_command_mode_error(opt, all_opts, flags);
- switch (opt->type) {
- case OPTION_LOWLEVEL_CALLBACK:
- return opt->ll_callback(p, opt, NULL, unset);
- case OPTION_BIT:
- if (unset)
- *(int *)opt->value &= ~opt->defval;
- else
- *(int *)opt->value |= opt->defval;
- return 0;
- case OPTION_NEGBIT:
- if (unset)
- *(int *)opt->value |= opt->defval;
- else
- *(int *)opt->value &= ~opt->defval;
- return 0;
- case OPTION_BITOP:
- if (unset)
- BUG("BITOP can't have unset form");
- *(int *)opt->value &= ~opt->extra;
- *(int *)opt->value |= opt->defval;
- return 0;
- case OPTION_COUNTUP:
- if (*(int *)opt->value < 0)
- *(int *)opt->value = 0;
- *(int *)opt->value = unset ? 0 : *(int *)opt->value + 1;
- return 0;
- case OPTION_SET_INT:
- *(int *)opt->value = unset ? 0 : opt->defval;
- return 0;
- case OPTION_STRING:
- if (unset)
- *(const char **)opt->value = NULL;
- else if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
- *(const char **)opt->value = (const char *)opt->defval;
- else
- return get_arg(p, opt, flags, (const char **)opt->value);
- return 0;
- case OPTION_FILENAME:
- 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;
- else
- err = get_arg(p, opt, flags, (const char **)opt->value);
- if (!err)
- fix_filename(p->prefix, (const char **)opt->value);
- return err;
- case OPTION_CALLBACK:
- {
- const char *p_arg = NULL;
- int p_unset;
- if (unset)
- p_unset = 1;
- else if (opt->flags & PARSE_OPT_NOARG)
- p_unset = 0;
- else if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
- p_unset = 0;
- else if (get_arg(p, opt, flags, &arg))
- return -1;
- else {
- p_unset = 0;
- p_arg = arg;
- }
- if (opt->callback)
- return (*opt->callback)(opt, p_arg, p_unset) ? (-1) : 0;
- else
- return (*opt->ll_callback)(p, opt, p_arg, p_unset);
- }
- case OPTION_INTEGER:
- if (unset) {
- *(int *)opt->value = 0;
- return 0;
- }
- if (opt->flags & PARSE_OPT_OPTARG && !p->opt) {
- *(int *)opt->value = opt->defval;
- return 0;
- }
- if (get_arg(p, opt, flags, &arg))
- return -1;
- if (!*arg)
- return error(_("%s expects a numerical value"),
- optname(opt, flags));
- *(int *)opt->value = strtol(arg, (char **)&s, 10);
- if (*s)
- return error(_("%s expects a numerical value"),
- optname(opt, flags));
- return 0;
- case OPTION_MAGNITUDE:
- if (unset) {
- *(unsigned long *)opt->value = 0;
- return 0;
- }
- if (opt->flags & PARSE_OPT_OPTARG && !p->opt) {
- *(unsigned long *)opt->value = opt->defval;
- return 0;
- }
- if (get_arg(p, opt, flags, &arg))
- return -1;
- if (!git_parse_ulong(arg, opt->value))
- return error(_("%s expects a non-negative integer value"
- " with an optional k/m/g suffix"),
- optname(opt, flags));
- return 0;
- default:
- BUG("opt->type %d should not happen", opt->type);
- }
- }
- static enum parse_opt_result parse_short_opt(struct parse_opt_ctx_t *p,
- const struct option *options)
- {
- const struct option *all_opts = options;
- const struct option *numopt = NULL;
- for (; options->type != OPTION_END; options++) {
- if (options->short_name == *p->opt) {
- p->opt = p->opt[1] ? p->opt + 1 : NULL;
- return get_value(p, options, all_opts, OPT_SHORT);
- }
- /*
- * Handle the numerical option later, explicit one-digit
- * options take precedence over it.
- */
- if (options->type == OPTION_NUMBER)
- numopt = options;
- }
- if (numopt && isdigit(*p->opt)) {
- size_t len = 1;
- char *arg;
- int rc;
- while (isdigit(p->opt[len]))
- len++;
- arg = xmemdupz(p->opt, len);
- p->opt = p->opt[len] ? p->opt + len : NULL;
- if (numopt->callback)
- rc = (*numopt->callback)(numopt, arg, 0) ? (-1) : 0;
- else
- rc = (*numopt->ll_callback)(p, numopt, arg, 0);
- free(arg);
- return rc;
- }
- return PARSE_OPT_UNKNOWN;
- }
- static int has_string(const char *it, const char **array)
- {
- while (*array)
- if (!strcmp(it, *(array++)))
- return 1;
- return 0;
- }
- static int is_alias(struct parse_opt_ctx_t *ctx,
- const struct option *one_opt,
- const struct option *another_opt)
- {
- const char **group;
- if (!ctx->alias_groups)
- return 0;
- if (!one_opt->long_name || !another_opt->long_name)
- return 0;
- for (group = ctx->alias_groups; *group; group += 3) {
- /* it and other are from the same family? */
- if (has_string(one_opt->long_name, group) &&
- has_string(another_opt->long_name, group))
- return 1;
- }
- return 0;
- }
- static enum parse_opt_result parse_long_opt(
- struct parse_opt_ctx_t *p, const char *arg,
- const struct option *options)
- {
- const struct option *all_opts = options;
- const char *arg_end = strchrnul(arg, '=');
- const struct option *abbrev_option = NULL, *ambiguous_option = NULL;
- int abbrev_flags = 0, ambiguous_flags = 0;
- for (; options->type != OPTION_END; options++) {
- const char *rest, *long_name = options->long_name;
- int flags = 0, opt_flags = 0;
- if (!long_name)
- continue;
- again:
- if (!skip_prefix(arg, long_name, &rest))
- rest = NULL;
- if (options->type == OPTION_ARGUMENT) {
- if (!rest)
- continue;
- if (*rest == '=')
- return error(_("%s takes no value"),
- optname(options, flags));
- if (*rest)
- continue;
- if (options->value)
- *(int *)options->value = options->defval;
- p->out[p->cpidx++] = arg - 2;
- return PARSE_OPT_DONE;
- }
- if (!rest) {
- /* abbreviated? */
- if (!(p->flags & PARSE_OPT_KEEP_UNKNOWN) &&
- !strncmp(long_name, arg, arg_end - arg)) {
- is_abbreviated:
- if (abbrev_option &&
- !is_alias(p, abbrev_option, options)) {
- /*
- * If this is abbreviated, it is
- * ambiguous. So when there is no
- * exact match later, we need to
- * error out.
- */
- ambiguous_option = abbrev_option;
- ambiguous_flags = abbrev_flags;
- }
- if (!(flags & OPT_UNSET) && *arg_end)
- p->opt = arg_end + 1;
- abbrev_option = options;
- abbrev_flags = flags ^ opt_flags;
- continue;
- }
- /* negation allowed? */
- if (options->flags & PARSE_OPT_NONEG)
- continue;
- /* negated and abbreviated very much? */
- if (starts_with("no-", arg)) {
- flags |= OPT_UNSET;
- goto is_abbreviated;
- }
- /* negated? */
- if (!starts_with(arg, "no-")) {
- if (skip_prefix(long_name, "no-", &long_name)) {
- opt_flags |= OPT_UNSET;
- goto again;
- }
- continue;
- }
- flags |= OPT_UNSET;
- if (!skip_prefix(arg + 3, long_name, &rest)) {
- /* abbreviated and negated? */
- if (starts_with(long_name, arg + 3))
- goto is_abbreviated;
- else
- continue;
- }
- }
- if (*rest) {
- if (*rest != '=')
- continue;
- p->opt = rest + 1;
- }
- return get_value(p, options, all_opts, flags ^ opt_flags);
- }
- if (disallow_abbreviated_options && (ambiguous_option || abbrev_option))
- die("disallowed abbreviated or ambiguous option '%.*s'",
- (int)(arg_end - arg), arg);
- if (ambiguous_option) {
- error(_("ambiguous option: %s "
- "(could be --%s%s or --%s%s)"),
- arg,
- (ambiguous_flags & OPT_UNSET) ? "no-" : "",
- ambiguous_option->long_name,
- (abbrev_flags & OPT_UNSET) ? "no-" : "",
- abbrev_option->long_name);
- return PARSE_OPT_HELP;
- }
- if (abbrev_option)
- return get_value(p, abbrev_option, all_opts, abbrev_flags);
- return PARSE_OPT_UNKNOWN;
- }
- static int parse_nodash_opt(struct parse_opt_ctx_t *p, const char *arg,
- const struct option *options)
- {
- const struct option *all_opts = options;
- for (; options->type != OPTION_END; options++) {
- if (!(options->flags & PARSE_OPT_NODASH))
- continue;
- if (options->short_name == arg[0] && arg[1] == '\0')
- return get_value(p, options, all_opts, OPT_SHORT);
- }
- return -2;
- }
- static void check_typos(const char *arg, const struct option *options)
- {
- if (strlen(arg) < 3)
- return;
- if (starts_with(arg, "no-")) {
- error(_("did you mean `--%s` (with two dashes)?"), arg);
- exit(129);
- }
- for (; options->type != OPTION_END; options++) {
- if (!options->long_name)
- continue;
- if (starts_with(options->long_name, arg)) {
- error(_("did you mean `--%s` (with two dashes)?"), arg);
- exit(129);
- }
- }
- }
- static void parse_options_check(const struct option *opts)
- {
- int err = 0;
- char short_opts[128];
- memset(short_opts, '\0', sizeof(short_opts));
- for (; opts->type != OPTION_END; opts++) {
- if ((opts->flags & PARSE_OPT_LASTARG_DEFAULT) &&
- (opts->flags & PARSE_OPT_OPTARG))
- err |= optbug(opts, "uses incompatible flags "
- "LASTARG_DEFAULT and OPTARG");
- if (opts->short_name) {
- if (0x7F <= opts->short_name)
- err |= optbug(opts, "invalid short name");
- else if (short_opts[opts->short_name]++)
- err |= optbug(opts, "short name already used");
- }
- if (opts->flags & PARSE_OPT_NODASH &&
- ((opts->flags & PARSE_OPT_OPTARG) ||
- !(opts->flags & PARSE_OPT_NOARG) ||
- !(opts->flags & PARSE_OPT_NONEG) ||
- opts->long_name))
- err |= optbug(opts, "uses feature "
- "not supported for dashless options");
- switch (opts->type) {
- case OPTION_COUNTUP:
- case OPTION_BIT:
- case OPTION_NEGBIT:
- case OPTION_SET_INT:
- case OPTION_NUMBER:
- if ((opts->flags & PARSE_OPT_OPTARG) ||
- !(opts->flags & PARSE_OPT_NOARG))
- err |= optbug(opts, "should not accept an argument");
- break;
- case OPTION_CALLBACK:
- if (!opts->callback && !opts->ll_callback)
- BUG("OPTION_CALLBACK needs one callback");
- if (opts->callback && opts->ll_callback)
- BUG("OPTION_CALLBACK can't have two callbacks");
- break;
- case OPTION_LOWLEVEL_CALLBACK:
- if (!opts->ll_callback)
- BUG("OPTION_LOWLEVEL_CALLBACK needs a callback");
- if (opts->callback)
- BUG("OPTION_LOWLEVEL_CALLBACK needs no high level callback");
- break;
- case OPTION_ALIAS:
- BUG("OPT_ALIAS() should not remain at this point. "
- "Are you using parse_options_step() directly?\n"
- "That case is not supported yet.");
- default:
- ; /* ok. (usually accepts an argument) */
- }
- if (opts->argh &&
- strcspn(opts->argh, " _") != strlen(opts->argh))
- err |= optbug(opts, "multi-word argh should use dash to separate words");
- }
- if (err)
- exit(128);
- }
- static void parse_options_start_1(struct parse_opt_ctx_t *ctx,
- int argc, const char **argv, const char *prefix,
- const struct option *options, int flags)
- {
- ctx->argc = argc;
- ctx->argv = argv;
- if (!(flags & PARSE_OPT_ONE_SHOT)) {
- ctx->argc--;
- ctx->argv++;
- }
- ctx->total = ctx->argc;
- ctx->out = argv;
- ctx->prefix = prefix;
- ctx->cpidx = ((flags & PARSE_OPT_KEEP_ARGV0) != 0);
- ctx->flags = flags;
- if ((flags & PARSE_OPT_KEEP_UNKNOWN) &&
- (flags & PARSE_OPT_STOP_AT_NON_OPTION) &&
- !(flags & PARSE_OPT_ONE_SHOT))
- BUG("STOP_AT_NON_OPTION and KEEP_UNKNOWN don't go together");
- if ((flags & PARSE_OPT_ONE_SHOT) &&
- (flags & PARSE_OPT_KEEP_ARGV0))
- BUG("Can't keep argv0 if you don't have it");
- parse_options_check(options);
- }
- void parse_options_start(struct parse_opt_ctx_t *ctx,
- int argc, const char **argv, const char *prefix,
- const struct option *options, int flags)
- {
- memset(ctx, 0, sizeof(*ctx));
- parse_options_start_1(ctx, argc, argv, prefix, options, flags);
- }
- static void show_negated_gitcomp(const struct option *opts, int show_all,
- int nr_noopts)
- {
- int printed_dashdash = 0;
- for (; opts->type != OPTION_END; opts++) {
- int has_unset_form = 0;
- const char *name;
- if (!opts->long_name)
- continue;
- if (!show_all &&
- (opts->flags & (PARSE_OPT_HIDDEN | PARSE_OPT_NOCOMPLETE)))
- continue;
- if (opts->flags & PARSE_OPT_NONEG)
- continue;
- switch (opts->type) {
- case OPTION_STRING:
- case OPTION_FILENAME:
- case OPTION_INTEGER:
- case OPTION_MAGNITUDE:
- case OPTION_CALLBACK:
- case OPTION_BIT:
- case OPTION_NEGBIT:
- case OPTION_COUNTUP:
- case OPTION_SET_INT:
- has_unset_form = 1;
- break;
- default:
- break;
- }
- if (!has_unset_form)
- continue;
- if (skip_prefix(opts->long_name, "no-", &name)) {
- if (nr_noopts < 0)
- printf(" --%s", name);
- } else if (nr_noopts >= 0) {
- if (nr_noopts && !printed_dashdash) {
- printf(" --");
- printed_dashdash = 1;
- }
- printf(" --no-%s", opts->long_name);
- nr_noopts++;
- }
- }
- }
- static int show_gitcomp(const struct option *opts, int show_all)
- {
- const struct option *original_opts = opts;
- int nr_noopts = 0;
- for (; opts->type != OPTION_END; opts++) {
- const char *suffix = "";
- if (!opts->long_name)
- continue;
- if (!show_all &&
- (opts->flags & (PARSE_OPT_HIDDEN | PARSE_OPT_NOCOMPLETE)))
- continue;
- switch (opts->type) {
- case OPTION_GROUP:
- continue;
- case OPTION_STRING:
- case OPTION_FILENAME:
- case OPTION_INTEGER:
- case OPTION_MAGNITUDE:
- case OPTION_CALLBACK:
- if (opts->flags & PARSE_OPT_NOARG)
- break;
- if (opts->flags & PARSE_OPT_OPTARG)
- break;
- if (opts->flags & PARSE_OPT_LASTARG_DEFAULT)
- break;
- suffix = "=";
- break;
- default:
- break;
- }
- if (opts->flags & PARSE_OPT_COMP_ARG)
- suffix = "=";
- if (starts_with(opts->long_name, "no-"))
- nr_noopts++;
- printf(" --%s%s", opts->long_name, suffix);
- }
- show_negated_gitcomp(original_opts, show_all, -1);
- show_negated_gitcomp(original_opts, show_all, nr_noopts);
- fputc('\n', stdout);
- return PARSE_OPT_COMPLETE;
- }
- /*
- * Scan and may produce a new option[] array, which should be used
- * instead of the original 'options'.
- *
- * Right now this is only used to preprocess and substitute
- * OPTION_ALIAS.
- */
- static struct option *preprocess_options(struct parse_opt_ctx_t *ctx,
- const struct option *options)
- {
- struct option *newopt;
- int i, nr, alias;
- int nr_aliases = 0;
- for (nr = 0; options[nr].type != OPTION_END; nr++) {
- if (options[nr].type == OPTION_ALIAS)
- nr_aliases++;
- }
- if (!nr_aliases)
- return NULL;
- ALLOC_ARRAY(newopt, nr + 1);
- COPY_ARRAY(newopt, options, nr + 1);
- /* each alias has two string pointers and NULL */
- CALLOC_ARRAY(ctx->alias_groups, 3 * (nr_aliases + 1));
- for (alias = 0, i = 0; i < nr; i++) {
- int short_name;
- const char *long_name;
- const char *source;
- struct strbuf help = STRBUF_INIT;
- int j;
- if (newopt[i].type != OPTION_ALIAS)
- continue;
- short_name = newopt[i].short_name;
- long_name = newopt[i].long_name;
- source = newopt[i].value;
- if (!long_name)
- BUG("An alias must have long option name");
- strbuf_addf(&help, _("alias of --%s"), source);
- for (j = 0; j < nr; j++) {
- const char *name = options[j].long_name;
- if (!name || strcmp(name, source))
- continue;
- if (options[j].type == OPTION_ALIAS)
- BUG("No please. Nested aliases are not supported.");
- memcpy(newopt + i, options + j, sizeof(*newopt));
- newopt[i].short_name = short_name;
- newopt[i].long_name = long_name;
- newopt[i].help = strbuf_detach(&help, NULL);
- break;
- }
- if (j == nr)
- BUG("could not find source option '%s' of alias '%s'",
- source, newopt[i].long_name);
- ctx->alias_groups[alias * 3 + 0] = newopt[i].long_name;
- ctx->alias_groups[alias * 3 + 1] = options[j].long_name;
- ctx->alias_groups[alias * 3 + 2] = NULL;
- alias++;
- }
- return newopt;
- }
- static int usage_with_options_internal(struct parse_opt_ctx_t *,
- const char * const *,
- const struct option *, int, int);
- int parse_options_step(struct parse_opt_ctx_t *ctx,
- const struct option *options,
- const char * const usagestr[])
- {
- int internal_help = !(ctx->flags & PARSE_OPT_NO_INTERNAL_HELP);
- /* we must reset ->opt, unknown short option leave it dangling */
- ctx->opt = NULL;
- for (; ctx->argc; ctx->argc--, ctx->argv++) {
- const char *arg = ctx->argv[0];
- if (ctx->flags & PARSE_OPT_ONE_SHOT &&
- ctx->argc != ctx->total)
- break;
- if (*arg != '-' || !arg[1]) {
- if (parse_nodash_opt(ctx, arg, options) == 0)
- continue;
- if (ctx->flags & PARSE_OPT_STOP_AT_NON_OPTION)
- return PARSE_OPT_NON_OPTION;
- ctx->out[ctx->cpidx++] = ctx->argv[0];
- continue;
- }
- /* lone -h asks for help */
- if (internal_help && ctx->total == 1 && !strcmp(arg + 1, "h"))
- goto show_usage;
- /*
- * lone --git-completion-helper and --git-completion-helper-all
- * are asked by git-completion.bash
- */
- if (ctx->total == 1 && !strcmp(arg, "--git-completion-helper"))
- return show_gitcomp(options, 0);
- if (ctx->total == 1 && !strcmp(arg, "--git-completion-helper-all"))
- return show_gitcomp(options, 1);
- if (arg[1] != '-') {
- ctx->opt = arg + 1;
- switch (parse_short_opt(ctx, options)) {
- case PARSE_OPT_ERROR:
- return PARSE_OPT_ERROR;
- case PARSE_OPT_UNKNOWN:
- if (ctx->opt)
- check_typos(arg + 1, options);
- if (internal_help && *ctx->opt == 'h')
- goto show_usage;
- goto unknown;
- case PARSE_OPT_NON_OPTION:
- case PARSE_OPT_HELP:
- case PARSE_OPT_COMPLETE:
- BUG("parse_short_opt() cannot return these");
- case PARSE_OPT_DONE:
- break;
- }
- if (ctx->opt)
- check_typos(arg + 1, options);
- while (ctx->opt) {
- switch (parse_short_opt(ctx, options)) {
- case PARSE_OPT_ERROR:
- return PARSE_OPT_ERROR;
- case PARSE_OPT_UNKNOWN:
- if (internal_help && *ctx->opt == 'h')
- goto show_usage;
- /* fake a short option thing to hide the fact that we may have
- * started to parse aggregated stuff
- *
- * This is leaky, too bad.
- */
- ctx->argv[0] = xstrdup(ctx->opt - 1);
- *(char *)ctx->argv[0] = '-';
- goto unknown;
- case PARSE_OPT_NON_OPTION:
- case PARSE_OPT_COMPLETE:
- case PARSE_OPT_HELP:
- BUG("parse_short_opt() cannot return these");
- case PARSE_OPT_DONE:
- break;
- }
- }
- continue;
- }
- if (!arg[2] /* "--" */ ||
- !strcmp(arg + 2, "end-of-options")) {
- if (!(ctx->flags & PARSE_OPT_KEEP_DASHDASH)) {
- ctx->argc--;
- ctx->argv++;
- }
- break;
- }
- if (internal_help && !strcmp(arg + 2, "help-all"))
- return usage_with_options_internal(ctx, usagestr, options, 1, 0);
- if (internal_help && !strcmp(arg + 2, "help"))
- goto show_usage;
- switch (parse_long_opt(ctx, arg + 2, options)) {
- case PARSE_OPT_ERROR:
- return PARSE_OPT_ERROR;
- case PARSE_OPT_UNKNOWN:
- goto unknown;
- case PARSE_OPT_HELP:
- goto show_usage;
- case PARSE_OPT_NON_OPTION:
- case PARSE_OPT_COMPLETE:
- BUG("parse_long_opt() cannot return these");
- case PARSE_OPT_DONE:
- break;
- }
- continue;
- unknown:
- if (ctx->flags & PARSE_OPT_ONE_SHOT)
- break;
- if (!(ctx->flags & PARSE_OPT_KEEP_UNKNOWN))
- return PARSE_OPT_UNKNOWN;
- ctx->out[ctx->cpidx++] = ctx->argv[0];
- ctx->opt = NULL;
- }
- return PARSE_OPT_DONE;
- show_usage:
- return usage_with_options_internal(ctx, usagestr, options, 0, 0);
- }
- int parse_options_end(struct parse_opt_ctx_t *ctx)
- {
- if (ctx->flags & PARSE_OPT_ONE_SHOT)
- return ctx->total - ctx->argc;
- MOVE_ARRAY(ctx->out + ctx->cpidx, ctx->argv, ctx->argc);
- ctx->out[ctx->cpidx + ctx->argc] = NULL;
- return ctx->cpidx + ctx->argc;
- }
- int parse_options(int argc, const char **argv, const char *prefix,
- const struct option *options, const char * const usagestr[],
- int flags)
- {
- struct parse_opt_ctx_t ctx;
- struct option *real_options;
- disallow_abbreviated_options =
- git_env_bool("GIT_TEST_DISALLOW_ABBREVIATED_OPTIONS", 0);
- memset(&ctx, 0, sizeof(ctx));
- real_options = preprocess_options(&ctx, options);
- if (real_options)
- options = real_options;
- parse_options_start_1(&ctx, argc, argv, prefix, options, flags);
- switch (parse_options_step(&ctx, options, usagestr)) {
- case PARSE_OPT_HELP:
- case PARSE_OPT_ERROR:
- exit(129);
- case PARSE_OPT_COMPLETE:
- exit(0);
- case PARSE_OPT_NON_OPTION:
- case PARSE_OPT_DONE:
- break;
- default: /* PARSE_OPT_UNKNOWN */
- if (ctx.argv[0][1] == '-') {
- error(_("unknown option `%s'"), ctx.argv[0] + 2);
- } else if (isascii(*ctx.opt)) {
- error(_("unknown switch `%c'"), *ctx.opt);
- } else {
- error(_("unknown non-ascii option in string: `%s'"),
- ctx.argv[0]);
- }
- usage_with_options(usagestr, options);
- }
- precompose_argv(argc, argv);
- free(real_options);
- free(ctx.alias_groups);
- return parse_options_end(&ctx);
- }
- static int usage_argh(const struct option *opts, FILE *outfile)
- {
- const char *s;
- int literal = (opts->flags & PARSE_OPT_LITERAL_ARGHELP) ||
- !opts->argh || !!strpbrk(opts->argh, "()<>[]|");
- if (opts->flags & PARSE_OPT_OPTARG)
- if (opts->long_name)
- s = literal ? "[=%s]" : "[=<%s>]";
- else
- s = literal ? "[%s]" : "[<%s>]";
- else
- s = literal ? " %s" : " <%s>";
- return utf8_fprintf(outfile, s, opts->argh ? _(opts->argh) : _("..."));
- }
- #define USAGE_OPTS_WIDTH 24
- #define USAGE_GAP 2
- static int usage_with_options_internal(struct parse_opt_ctx_t *ctx,
- const char * const *usagestr,
- const struct option *opts, int full, int err)
- {
- FILE *outfile = err ? stderr : stdout;
- int need_newline;
- if (!usagestr)
- return PARSE_OPT_HELP;
- if (!err && ctx && ctx->flags & PARSE_OPT_SHELL_EVAL)
- fprintf(outfile, "cat <<\\EOF\n");
- fprintf_ln(outfile, _("usage: %s"), _(*usagestr++));
- while (*usagestr && **usagestr)
- /*
- * TRANSLATORS: the colon here should align with the
- * one in "usage: %s" translation.
- */
- fprintf_ln(outfile, _(" or: %s"), _(*usagestr++));
- while (*usagestr) {
- if (**usagestr)
- fprintf_ln(outfile, _(" %s"), _(*usagestr));
- else
- fputc('\n', outfile);
- usagestr++;
- }
- need_newline = 1;
- for (; opts->type != OPTION_END; opts++) {
- size_t pos;
- int pad;
- if (opts->type == OPTION_GROUP) {
- fputc('\n', outfile);
- need_newline = 0;
- if (*opts->help)
- fprintf(outfile, "%s\n", _(opts->help));
- continue;
- }
- if (!full && (opts->flags & PARSE_OPT_HIDDEN))
- continue;
- if (need_newline) {
- fputc('\n', outfile);
- need_newline = 0;
- }
- pos = fprintf(outfile, " ");
- if (opts->short_name) {
- if (opts->flags & PARSE_OPT_NODASH)
- pos += fprintf(outfile, "%c", opts->short_name);
- else
- pos += fprintf(outfile, "-%c", opts->short_name);
- }
- if (opts->long_name && opts->short_name)
- pos += fprintf(outfile, ", ");
- if (opts->long_name)
- pos += fprintf(outfile, "--%s", opts->long_name);
- if (opts->type == OPTION_NUMBER)
- pos += utf8_fprintf(outfile, _("-NUM"));
- if ((opts->flags & PARSE_OPT_LITERAL_ARGHELP) ||
- !(opts->flags & PARSE_OPT_NOARG))
- pos += usage_argh(opts, outfile);
- if (pos <= USAGE_OPTS_WIDTH)
- pad = USAGE_OPTS_WIDTH - pos;
- else {
- fputc('\n', outfile);
- pad = USAGE_OPTS_WIDTH;
- }
- if (opts->type == OPTION_ALIAS) {
- fprintf(outfile, "%*s", pad + USAGE_GAP, "");
- fprintf_ln(outfile, _("alias of --%s"),
- (const char *)opts->value);
- continue;
- }
- fprintf(outfile, "%*s%s\n", pad + USAGE_GAP, "", _(opts->help));
- }
- fputc('\n', outfile);
- if (!err && ctx && ctx->flags & PARSE_OPT_SHELL_EVAL)
- fputs("EOF\n", outfile);
- return PARSE_OPT_HELP;
- }
- void NORETURN usage_with_options(const char * const *usagestr,
- const struct option *opts)
- {
- usage_with_options_internal(NULL, usagestr, opts, 0, 1);
- exit(129);
- }
- void NORETURN usage_msg_opt(const char *msg,
- const char * const *usagestr,
- const struct option *options)
- {
- fprintf(stderr, "fatal: %s\n\n", msg);
- usage_with_options(usagestr, options);
- }
- const char *optname(const struct option *opt, int flags)
- {
- static struct strbuf sb = STRBUF_INIT;
- strbuf_reset(&sb);
- if (flags & OPT_SHORT)
- strbuf_addf(&sb, "switch `%c'", opt->short_name);
- else if (flags & OPT_UNSET)
- strbuf_addf(&sb, "option `no-%s'", opt->long_name);
- else
- strbuf_addf(&sb, "option `%s'", opt->long_name);
- return sb.buf;
- }
|