| #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; |
| |
| enum opt_parsed { |
| OPT_LONG = 0, |
| OPT_SHORT = 1<<0, |
| OPT_UNSET = 1<<1, |
| }; |
| |
| static void optbug(const struct option *opt, const char *reason) |
| { |
| if (opt->long_name && opt->short_name) |
| bug("switch '%c' (--%s) %s", opt->short_name, |
| opt->long_name, reason); |
| else if (opt->long_name) |
| bug("option '%s' %s", opt->long_name, reason); |
| else |
| bug("switch '%c' %s", opt->short_name, reason); |
| } |
| |
| static const char *optname(const struct option *opt, enum opt_parsed 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 if (flags == OPT_LONG) |
| strbuf_addf(&sb, "option `%s'", opt->long_name); |
| else |
| BUG("optname() got unknown flags %d", flags); |
| |
| return sb.buf; |
| } |
| |
| static enum parse_opt_result get_arg(struct parse_opt_ctx_t *p, |
| const struct option *opt, |
| enum opt_parsed 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, |
| enum opt_parsed 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, |
| enum opt_parsed 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; |
| enum opt_parsed abbrev_flags = OPT_LONG, ambiguous_flags = OPT_LONG; |
| |
| for (; options->type != OPTION_END; options++) { |
| const char *rest, *long_name = options->long_name; |
| enum opt_parsed flags = OPT_LONG, opt_flags = OPT_LONG; |
| |
| if (options->type == OPTION_SUBCOMMAND) |
| continue; |
| if (!long_name) |
| continue; |
| |
| again: |
| if (!skip_prefix(arg, long_name, &rest)) |
| rest = NULL; |
| if (!rest) { |
| /* abbreviated? */ |
| if (!(p->flags & PARSE_OPT_KEEP_UNKNOWN_OPT) && |
| !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 enum parse_opt_result 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 PARSE_OPT_ERROR; |
| } |
| |
| static enum parse_opt_result parse_subcommand(const char *arg, |
| const struct option *options) |
| { |
| for (; options->type != OPTION_END; options++) |
| if (options->type == OPTION_SUBCOMMAND && |
| !strcmp(options->long_name, arg)) { |
| *(parse_opt_subcommand_fn **)options->value = options->subcommand_fn; |
| return PARSE_OPT_SUBCOMMAND; |
| } |
| |
| return PARSE_OPT_UNKNOWN; |
| } |
| |
| 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) |
| { |
| char short_opts[128]; |
| void *subcommand_value = NULL; |
| |
| 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)) |
| optbug(opts, "uses incompatible flags " |
| "LASTARG_DEFAULT and OPTARG"); |
| if (opts->short_name) { |
| if (0x7F <= opts->short_name) |
| optbug(opts, "invalid short name"); |
| else if (short_opts[opts->short_name]++) |
| 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)) |
| 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)) |
| optbug(opts, "should not accept an argument"); |
| break; |
| case OPTION_CALLBACK: |
| if (!opts->callback && !opts->ll_callback) |
| optbug(opts, "OPTION_CALLBACK needs one callback"); |
| else if (opts->callback && opts->ll_callback) |
| optbug(opts, "OPTION_CALLBACK can't have two callbacks"); |
| break; |
| case OPTION_LOWLEVEL_CALLBACK: |
| if (!opts->ll_callback) |
| optbug(opts, "OPTION_LOWLEVEL_CALLBACK needs a callback"); |
| if (opts->callback) |
| optbug(opts, "OPTION_LOWLEVEL_CALLBACK needs no high level callback"); |
| break; |
| case OPTION_ALIAS: |
| optbug(opts, "OPT_ALIAS() should not remain at this point. " |
| "Are you using parse_options_step() directly?\n" |
| "That case is not supported yet."); |
| break; |
| case OPTION_SUBCOMMAND: |
| if (!opts->value || !opts->subcommand_fn) |
| optbug(opts, "OPTION_SUBCOMMAND needs a value and a subcommand function"); |
| if (!subcommand_value) |
| subcommand_value = opts->value; |
| else if (subcommand_value != opts->value) |
| optbug(opts, "all OPTION_SUBCOMMANDs need the same value"); |
| break; |
| default: |
| ; /* ok. (usually accepts an argument) */ |
| } |
| if (opts->argh && |
| strcspn(opts->argh, " _") != strlen(opts->argh)) |
| optbug(opts, "multi-word argh should use dash to separate words"); |
| } |
| BUG_if_bug("invalid 'struct option'"); |
| } |
| |
| static int has_subcommands(const struct option *options) |
| { |
| for (; options->type != OPTION_END; options++) |
| if (options->type == OPTION_SUBCOMMAND) |
| return 1; |
| return 0; |
| } |
| |
| static void parse_options_start_1(struct parse_opt_ctx_t *ctx, |
| int argc, const char **argv, const char *prefix, |
| const struct option *options, |
| enum parse_opt_flags 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; |
| ctx->has_subcommands = has_subcommands(options); |
| if (!ctx->has_subcommands && (flags & PARSE_OPT_SUBCOMMAND_OPTIONAL)) |
| BUG("Using PARSE_OPT_SUBCOMMAND_OPTIONAL without subcommands"); |
| if (ctx->has_subcommands) { |
| if (flags & PARSE_OPT_STOP_AT_NON_OPTION) |
| BUG("subcommands are incompatible with PARSE_OPT_STOP_AT_NON_OPTION"); |
| if (!(flags & PARSE_OPT_SUBCOMMAND_OPTIONAL)) { |
| if (flags & PARSE_OPT_KEEP_UNKNOWN_OPT) |
| BUG("subcommands are incompatible with PARSE_OPT_KEEP_UNKNOWN_OPT unless in combination with PARSE_OPT_SUBCOMMAND_OPTIONAL"); |
| if (flags & PARSE_OPT_KEEP_DASHDASH) |
| BUG("subcommands are incompatible with PARSE_OPT_KEEP_DASHDASH unless in combination with PARSE_OPT_SUBCOMMAND_OPTIONAL"); |
| } |
| } |
| if ((flags & PARSE_OPT_KEEP_UNKNOWN_OPT) && |
| (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, |
| enum parse_opt_flags 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 *prefix = "--"; |
| const char *suffix = ""; |
| |
| if (!opts->long_name) |
| continue; |
| if (!show_all && |
| (opts->flags & (PARSE_OPT_HIDDEN | PARSE_OPT_NOCOMPLETE | PARSE_OPT_FROM_ALIAS))) |
| continue; |
| |
| switch (opts->type) { |
| case OPTION_SUBCOMMAND: |
| prefix = ""; |
| break; |
| 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%s%s", opts == original_opts ? "" : " ", |
| prefix, 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. |
| * |
| * The returned options should be freed using free_preprocessed_options. |
| */ |
| 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; |
| |
| DUP_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); |
| newopt[i].flags |= PARSE_OPT_FROM_ALIAS; |
| 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 void free_preprocessed_options(struct option *options) |
| { |
| int i; |
| |
| if (!options) |
| return; |
| |
| for (i = 0; options[i].type != OPTION_END; i++) { |
| if (options[i].flags & PARSE_OPT_FROM_ALIAS) |
| free((void *)options[i].help); |
| } |
| free(options); |
| } |
| |
| static enum parse_opt_result usage_with_options_internal(struct parse_opt_ctx_t *, |
| const char * const *, |
| const struct option *, |
| int, int); |
| |
| enum parse_opt_result 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->has_subcommands) { |
| if (ctx->flags & PARSE_OPT_STOP_AT_NON_OPTION) |
| return PARSE_OPT_NON_OPTION; |
| ctx->out[ctx->cpidx++] = ctx->argv[0]; |
| continue; |
| } |
| switch (parse_subcommand(arg, options)) { |
| case PARSE_OPT_SUBCOMMAND: |
| return PARSE_OPT_SUBCOMMAND; |
| case PARSE_OPT_UNKNOWN: |
| if (ctx->flags & PARSE_OPT_SUBCOMMAND_OPTIONAL) |
| /* |
| * arg is neither a short or long |
| * option nor a subcommand. Since |
| * this command has a default |
| * operation mode, we have to treat |
| * this arg and all remaining args |
| * as args meant to that default |
| * operation mode. |
| * So we are done parsing. |
| */ |
| return PARSE_OPT_DONE; |
| error(_("unknown subcommand: `%s'"), arg); |
| usage_with_options(usagestr, options); |
| case PARSE_OPT_COMPLETE: |
| case PARSE_OPT_HELP: |
| case PARSE_OPT_ERROR: |
| case PARSE_OPT_DONE: |
| case PARSE_OPT_NON_OPTION: |
| /* Impossible. */ |
| BUG("parse_subcommand() cannot return these"); |
| } |
| } |
| |
| /* 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_SUBCOMMAND: |
| 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_SUBCOMMAND: |
| 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_SUBCOMMAND: |
| 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->has_subcommands && |
| (ctx->flags & PARSE_OPT_SUBCOMMAND_OPTIONAL) && |
| (ctx->flags & PARSE_OPT_KEEP_UNKNOWN_OPT)) { |
| /* |
| * Found an unknown option given to a command with |
| * subcommands that has a default operation mode: |
| * we treat this option and all remaining args as |
| * arguments meant to that default operation mode. |
| * So we are done parsing. |
| */ |
| return PARSE_OPT_DONE; |
| } |
| if (!(ctx->flags & PARSE_OPT_KEEP_UNKNOWN_OPT)) |
| 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[], |
| enum parse_opt_flags 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_SUBCOMMAND: |
| break; |
| case PARSE_OPT_DONE: |
| if (ctx.has_subcommands && |
| !(flags & PARSE_OPT_SUBCOMMAND_OPTIONAL)) { |
| error(_("need a subcommand")); |
| usage_with_options(usagestr, options); |
| } |
| break; |
| case 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_prefix(argc, argv, NULL); |
| free_preprocessed_options(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 enum parse_opt_result 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; |
| |
| const char *usage_prefix = _("usage: %s"); |
| /* |
| * The translation could be anything, but we can count on |
| * msgfmt(1)'s --check option to have asserted that "%s" is in |
| * the translation. So compute the length of the "usage: " |
| * part. We are assuming that the translator wasn't overly |
| * clever and used e.g. "%1$s" instead of "%s", there's only |
| * one "%s" in "usage_prefix" above, so there's no reason to |
| * do so even with a RTL language. |
| */ |
| size_t usage_len = strlen(usage_prefix) - strlen("%s"); |
| /* |
| * TRANSLATORS: the colon here should align with the |
| * one in "usage: %s" translation. |
| */ |
| const char *or_prefix = _(" or: %s"); |
| /* |
| * TRANSLATORS: You should only need to translate this format |
| * string if your language is a RTL language (e.g. Arabic, |
| * Hebrew etc.), not if it's a LTR language (e.g. German, |
| * Russian, Chinese etc.). |
| * |
| * When a translated usage string has an embedded "\n" it's |
| * because options have wrapped to the next line. The line |
| * after the "\n" will then be padded to align with the |
| * command name, such as N_("git cmd [opt]\n<8 |
| * spaces>[opt2]"), where the 8 spaces are the same length as |
| * "git cmd ". |
| * |
| * This format string prints out that already-translated |
| * line. The "%*s" is whitespace padding to account for the |
| * padding at the start of the line that we add in this |
| * function. The "%s" is a line in the (hopefully already |
| * translated) N_() usage string, which contained embedded |
| * newlines before we split it up. |
| */ |
| const char *usage_continued = _("%*s%s"); |
| const char *prefix = usage_prefix; |
| int saw_empty_line = 0; |
| |
| if (!usagestr) |
| return PARSE_OPT_HELP; |
| |
| if (!err && ctx && ctx->flags & PARSE_OPT_SHELL_EVAL) |
| fprintf(outfile, "cat <<\\EOF\n"); |
| |
| while (*usagestr) { |
| const char *str = _(*usagestr++); |
| struct string_list list = STRING_LIST_INIT_DUP; |
| unsigned int j; |
| |
| if (!saw_empty_line && !*str) |
| saw_empty_line = 1; |
| |
| string_list_split(&list, str, '\n', -1); |
| for (j = 0; j < list.nr; j++) { |
| const char *line = list.items[j].string; |
| |
| if (saw_empty_line && *line) |
| fprintf_ln(outfile, _(" %s"), line); |
| else if (saw_empty_line) |
| fputc('\n', outfile); |
| else if (!j) |
| fprintf_ln(outfile, prefix, line); |
| else |
| fprintf_ln(outfile, usage_continued, |
| (int)usage_len, "", line); |
| } |
| string_list_clear(&list, 0); |
| |
| prefix = or_prefix; |
| } |
| |
| need_newline = 1; |
| |
| for (; opts->type != OPTION_END; opts++) { |
| size_t pos; |
| int pad; |
| |
| if (opts->type == OPTION_SUBCOMMAND) |
| continue; |
| 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) |
| { |
| die_message("%s\n", msg); /* The extra \n is intentional */ |
| usage_with_options(usagestr, options); |
| } |
| |
| void NORETURN usage_msg_optf(const char * const fmt, |
| const char * const *usagestr, |
| const struct option *options, ...) |
| { |
| struct strbuf msg = STRBUF_INIT; |
| va_list ap; |
| va_start(ap, options); |
| strbuf_vaddf(&msg, fmt, ap); |
| va_end(ap); |
| |
| usage_msg_opt(msg.buf, usagestr, options); |
| } |
| |
| void die_for_incompatible_opt4(int opt1, const char *opt1_name, |
| int opt2, const char *opt2_name, |
| int opt3, const char *opt3_name, |
| int opt4, const char *opt4_name) |
| { |
| int count = 0; |
| const char *options[4]; |
| |
| if (opt1) |
| options[count++] = opt1_name; |
| if (opt2) |
| options[count++] = opt2_name; |
| if (opt3) |
| options[count++] = opt3_name; |
| if (opt4) |
| options[count++] = opt4_name; |
| switch (count) { |
| case 4: |
| die(_("options '%s', '%s', '%s', and '%s' cannot be used together"), |
| opt1_name, opt2_name, opt3_name, opt4_name); |
| break; |
| case 3: |
| die(_("options '%s', '%s', and '%s' cannot be used together"), |
| options[0], options[1], options[2]); |
| break; |
| case 2: |
| die(_("options '%s' and '%s' cannot be used together"), |
| options[0], options[1]); |
| break; |
| default: |
| break; |
| } |
| } |