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-rw-r--r--parse-options.c1013
1 files changed, 1013 insertions, 0 deletions
diff --git a/parse-options.c b/parse-options.c
new file mode 100644
index 0000000..f050743
--- /dev/null
+++ b/parse-options.c
@@ -0,0 +1,1013 @@
+#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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 00:04:38 +0000