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584 lines
17 KiB
584 lines
17 KiB
#ifndef PARSE_OPTIONS_H |
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#define PARSE_OPTIONS_H |
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|
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#include "gettext.h" |
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|
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/** |
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* Refer to Documentation/technical/api-parse-options.txt for the API doc. |
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*/ |
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|
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enum parse_opt_type { |
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/* special types */ |
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OPTION_END, |
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OPTION_GROUP, |
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OPTION_NUMBER, |
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OPTION_ALIAS, |
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OPTION_SUBCOMMAND, |
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/* options with no arguments */ |
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OPTION_BIT, |
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OPTION_NEGBIT, |
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OPTION_BITOP, |
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OPTION_COUNTUP, |
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OPTION_SET_INT, |
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/* options with arguments (usually) */ |
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OPTION_STRING, |
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OPTION_INTEGER, |
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OPTION_MAGNITUDE, |
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OPTION_CALLBACK, |
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OPTION_LOWLEVEL_CALLBACK, |
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OPTION_FILENAME |
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}; |
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|
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enum parse_opt_flags { |
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PARSE_OPT_KEEP_DASHDASH = 1 << 0, |
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PARSE_OPT_STOP_AT_NON_OPTION = 1 << 1, |
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PARSE_OPT_KEEP_ARGV0 = 1 << 2, |
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PARSE_OPT_KEEP_UNKNOWN_OPT = 1 << 3, |
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PARSE_OPT_NO_INTERNAL_HELP = 1 << 4, |
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PARSE_OPT_ONE_SHOT = 1 << 5, |
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PARSE_OPT_SHELL_EVAL = 1 << 6, |
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PARSE_OPT_SUBCOMMAND_OPTIONAL = 1 << 7, |
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}; |
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|
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enum parse_opt_option_flags { |
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PARSE_OPT_OPTARG = 1 << 0, |
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PARSE_OPT_NOARG = 1 << 1, |
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PARSE_OPT_NONEG = 1 << 2, |
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PARSE_OPT_HIDDEN = 1 << 3, |
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PARSE_OPT_LASTARG_DEFAULT = 1 << 4, |
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PARSE_OPT_NODASH = 1 << 5, |
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PARSE_OPT_LITERAL_ARGHELP = 1 << 6, |
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PARSE_OPT_FROM_ALIAS = 1 << 7, |
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PARSE_OPT_NOCOMPLETE = 1 << 9, |
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PARSE_OPT_COMP_ARG = 1 << 10, |
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PARSE_OPT_CMDMODE = 1 << 11, |
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}; |
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|
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enum parse_opt_result { |
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PARSE_OPT_COMPLETE = -3, |
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PARSE_OPT_HELP = -2, |
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PARSE_OPT_ERROR = -1, /* must be the same as error() */ |
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PARSE_OPT_DONE = 0, /* fixed so that "return 0" works */ |
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PARSE_OPT_NON_OPTION, |
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PARSE_OPT_SUBCOMMAND, |
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PARSE_OPT_UNKNOWN |
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}; |
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|
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struct option; |
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typedef int parse_opt_cb(const struct option *, const char *arg, int unset); |
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|
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struct parse_opt_ctx_t; |
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typedef enum parse_opt_result parse_opt_ll_cb(struct parse_opt_ctx_t *ctx, |
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const struct option *opt, |
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const char *arg, int unset); |
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|
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typedef int parse_opt_subcommand_fn(int argc, const char **argv, |
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const char *prefix); |
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|
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/* |
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* `type`:: |
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* holds the type of the option, you must have an OPTION_END last in your |
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* array. |
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* |
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* `short_name`:: |
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* the character to use as a short option name, '\0' if none. |
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* |
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* `long_name`:: |
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* the long option (without the leading dashes) or subcommand name, |
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* NULL if none. |
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* |
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* `value`:: |
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* stores pointers to the values to be filled. |
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* |
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* `argh`:: |
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* token to explain the kind of argument this option wants. Does not |
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* begin in capital letter, and does not end with a full stop. |
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* Should be wrapped by N_() for translation. |
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* Is automatically enclosed in brackets when printed, unless it |
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* contains any of the following characters: ()<>[]| |
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* E.g. "name" is shown as "<name>" to indicate that a name value |
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* needs to be supplied, not the literal string "name", but |
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* "<start>,<end>" and "(this|that)" are printed verbatim. |
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* |
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* `help`:: |
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* the short help associated to what the option does. |
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* Must never be NULL (except for OPTION_END and OPTION_SUBCOMMAND). |
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* OPTION_GROUP uses this pointer to store the group header. |
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* Should be wrapped by N_() for translation. |
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* |
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* `flags`:: |
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* mask of parse_opt_option_flags. |
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* PARSE_OPT_OPTARG: says that the argument is optional (not for BOOLEANs) |
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* PARSE_OPT_NOARG: says that this option does not take an argument |
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* PARSE_OPT_NONEG: says that this option cannot be negated |
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* PARSE_OPT_HIDDEN: this option is skipped in the default usage, and |
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* shown only in the full usage. |
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* PARSE_OPT_LASTARG_DEFAULT: says that this option will take the default |
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* value if no argument is given when the option |
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* is last on the command line. If the option is |
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* not last it will require an argument. |
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* Should not be used with PARSE_OPT_OPTARG. |
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* PARSE_OPT_NODASH: this option doesn't start with a dash; can only be a |
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* short option and can't accept arguments. |
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* PARSE_OPT_LITERAL_ARGHELP: says that argh shouldn't be enclosed in brackets |
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* (i.e. '<argh>') in the help message. |
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* Useful for options with multiple parameters. |
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* PARSE_OPT_NOCOMPLETE: by default all visible options are completable |
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* by git-completion.bash. This option suppresses that. |
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* PARSE_OPT_COMP_ARG: this option forces to git-completion.bash to |
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* complete an option as --name= not --name even if |
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* the option takes optional argument. |
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* |
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* `callback`:: |
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* pointer to the callback to use for OPTION_CALLBACK |
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* |
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* `defval`:: |
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* default value to fill (*->value) with for PARSE_OPT_OPTARG. |
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* OPTION_{BIT,SET_INT} store the {mask,integer} to put in the value when met. |
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* CALLBACKS can use it like they want. |
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* |
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* `ll_callback`:: |
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* pointer to the callback to use for OPTION_LOWLEVEL_CALLBACK |
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* |
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* `subcommand_fn`:: |
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* pointer to a function to use for OPTION_SUBCOMMAND. |
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* It will be put in value when the subcommand is given on the command line. |
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*/ |
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struct option { |
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enum parse_opt_type type; |
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int short_name; |
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const char *long_name; |
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void *value; |
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const char *argh; |
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const char *help; |
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|
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enum parse_opt_option_flags flags; |
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parse_opt_cb *callback; |
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intptr_t defval; |
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parse_opt_ll_cb *ll_callback; |
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intptr_t extra; |
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parse_opt_subcommand_fn *subcommand_fn; |
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}; |
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|
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#define OPT_BIT_F(s, l, v, h, b, f) { \ |
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.type = OPTION_BIT, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.help = (h), \ |
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.flags = PARSE_OPT_NOARG|(f), \ |
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.callback = NULL, \ |
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.defval = (b), \ |
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} |
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#define OPT_COUNTUP_F(s, l, v, h, f) { \ |
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.type = OPTION_COUNTUP, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.help = (h), \ |
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.flags = PARSE_OPT_NOARG|(f), \ |
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} |
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#define OPT_SET_INT_F(s, l, v, h, i, f) { \ |
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.type = OPTION_SET_INT, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.help = (h), \ |
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.flags = PARSE_OPT_NOARG | (f), \ |
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.defval = (i), \ |
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} |
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#define OPT_BOOL_F(s, l, v, h, f) OPT_SET_INT_F(s, l, v, h, 1, f) |
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#define OPT_CALLBACK_F(s, l, v, a, h, f, cb) { \ |
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.type = OPTION_CALLBACK, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.argh = (a), \ |
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.help = (h), \ |
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.flags = (f), \ |
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.callback = (cb), \ |
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} |
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#define OPT_STRING_F(s, l, v, a, h, f) { \ |
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.type = OPTION_STRING, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.argh = (a), \ |
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.help = (h), \ |
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.flags = (f), \ |
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} |
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#define OPT_INTEGER_F(s, l, v, h, f) { \ |
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.type = OPTION_INTEGER, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.argh = N_("n"), \ |
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.help = (h), \ |
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.flags = (f), \ |
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} |
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|
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#define OPT_END() { \ |
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.type = OPTION_END, \ |
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} |
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#define OPT_GROUP(h) { \ |
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.type = OPTION_GROUP, \ |
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.help = (h), \ |
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} |
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#define OPT_BIT(s, l, v, h, b) OPT_BIT_F(s, l, v, h, b, 0) |
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#define OPT_BITOP(s, l, v, h, set, clear) { \ |
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.type = OPTION_BITOP, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.help = (h), \ |
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.flags = PARSE_OPT_NOARG|PARSE_OPT_NONEG, \ |
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.defval = (set), \ |
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.extra = (clear), \ |
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} |
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#define OPT_NEGBIT(s, l, v, h, b) { \ |
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.type = OPTION_NEGBIT, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.help = (h), \ |
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.flags = PARSE_OPT_NOARG, \ |
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.defval = (b), \ |
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} |
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#define OPT_COUNTUP(s, l, v, h) OPT_COUNTUP_F(s, l, v, h, 0) |
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#define OPT_SET_INT(s, l, v, h, i) OPT_SET_INT_F(s, l, v, h, i, 0) |
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#define OPT_BOOL(s, l, v, h) OPT_BOOL_F(s, l, v, h, 0) |
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#define OPT_HIDDEN_BOOL(s, l, v, h) { \ |
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.type = OPTION_SET_INT, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.help = (h), \ |
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.flags = PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, \ |
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.defval = 1, \ |
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} |
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#define OPT_CMDMODE_F(s, l, v, h, i, f) { \ |
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.type = OPTION_SET_INT, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.help = (h), \ |
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.flags = PARSE_OPT_CMDMODE|PARSE_OPT_NOARG|PARSE_OPT_NONEG | (f), \ |
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.defval = (i), \ |
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} |
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#define OPT_CMDMODE(s, l, v, h, i) OPT_CMDMODE_F(s, l, v, h, i, 0) |
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|
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#define OPT_INTEGER(s, l, v, h) OPT_INTEGER_F(s, l, v, h, 0) |
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#define OPT_MAGNITUDE(s, l, v, h) { \ |
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.type = OPTION_MAGNITUDE, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.argh = N_("n"), \ |
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.help = (h), \ |
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.flags = PARSE_OPT_NONEG, \ |
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} |
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#define OPT_STRING(s, l, v, a, h) OPT_STRING_F(s, l, v, a, h, 0) |
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#define OPT_STRING_LIST(s, l, v, a, h) { \ |
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.type = OPTION_CALLBACK, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.argh = (a), \ |
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.help = (h), \ |
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.callback = &parse_opt_string_list, \ |
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} |
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#define OPT_STRVEC(s, l, v, a, h) { \ |
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.type = OPTION_CALLBACK, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.argh = (a), \ |
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.help = (h), \ |
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.callback = &parse_opt_strvec, \ |
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} |
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#define OPT_UYN(s, l, v, h) { \ |
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.type = OPTION_CALLBACK, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.help = (h), \ |
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.flags = PARSE_OPT_NOARG, \ |
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.callback = &parse_opt_tertiary, \ |
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} |
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#define OPT_EXPIRY_DATE(s, l, v, h) { \ |
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.type = OPTION_CALLBACK, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.argh = N_("expiry-date"), \ |
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.help = (h), \ |
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.callback = parse_opt_expiry_date_cb, \ |
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} |
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#define OPT_CALLBACK(s, l, v, a, h, cb) OPT_CALLBACK_F(s, l, v, a, h, 0, cb) |
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#define OPT_NUMBER_CALLBACK(v, h, cb) { \ |
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.type = OPTION_NUMBER, \ |
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.value = (v), \ |
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.help = (h), \ |
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.flags = PARSE_OPT_NOARG | PARSE_OPT_NONEG, \ |
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.callback = (cb), \ |
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} |
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#define OPT_FILENAME(s, l, v, h) { \ |
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.type = OPTION_FILENAME, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.argh = N_("file"), \ |
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.help = (h), \ |
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} |
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#define OPT_COLOR_FLAG(s, l, v, h) { \ |
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.type = OPTION_CALLBACK, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.argh = N_("when"), \ |
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.help = (h), \ |
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.flags = PARSE_OPT_OPTARG, \ |
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.callback = parse_opt_color_flag_cb, \ |
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.defval = (intptr_t)"always", \ |
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} |
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|
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#define OPT_NOOP_NOARG(s, l) { \ |
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.type = OPTION_CALLBACK, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.help = N_("no-op (backward compatibility)"), \ |
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.flags = PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, \ |
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.callback = parse_opt_noop_cb, \ |
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} |
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#define OPT_ALIAS(s, l, source_long_name) { \ |
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.type = OPTION_ALIAS, \ |
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.short_name = (s), \ |
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.long_name = (l), \ |
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.value = (source_long_name), \ |
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} |
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|
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#define OPT_SUBCOMMAND_F(l, v, fn, f) { \ |
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.type = OPTION_SUBCOMMAND, \ |
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.long_name = (l), \ |
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.value = (v), \ |
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.flags = (f), \ |
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.subcommand_fn = (fn), \ |
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} |
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#define OPT_SUBCOMMAND(l, v, fn) OPT_SUBCOMMAND_F((l), (v), (fn), 0) |
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|
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/* |
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* parse_options() will filter out the processed options and leave the |
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* non-option arguments in argv[]. argv0 is assumed program name and |
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* skipped. |
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* |
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* usagestr strings should be marked for translation with N_(). |
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* |
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* Returns the number of arguments left in argv[]. |
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* |
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* In one-shot mode, argv0 is not a program name, argv[] is left |
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* untouched and parse_options() returns the number of options |
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* processed. |
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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, |
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const char * const usagestr[], |
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enum parse_opt_flags flags); |
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|
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NORETURN void usage_with_options(const char * const *usagestr, |
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const struct option *options); |
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|
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NORETURN void usage_msg_opt(const char *msg, |
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const char * const *usagestr, |
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const struct option *options); |
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|
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/** |
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* usage_msg_optf() is like usage_msg_opt() except that the first |
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* argument is a format string, and optional format arguments follow |
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* after the 3rd option. |
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*/ |
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__attribute__((format (printf,1,4))) |
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void NORETURN usage_msg_optf(const char *fmt, |
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const char * const *usagestr, |
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const struct option *options, ...); |
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|
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void die_for_incompatible_opt4(int opt1, const char *opt1_name, |
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int opt2, const char *opt2_name, |
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int opt3, const char *opt3_name, |
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int opt4, const char *opt4_name); |
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|
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|
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static inline void die_for_incompatible_opt3(int opt1, const char *opt1_name, |
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int opt2, const char *opt2_name, |
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int opt3, const char *opt3_name) |
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{ |
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die_for_incompatible_opt4(opt1, opt1_name, |
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opt2, opt2_name, |
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opt3, opt3_name, |
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0, ""); |
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} |
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|
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/* |
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* Use these assertions for callbacks that expect to be called with NONEG and |
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* NOARG respectively, and do not otherwise handle the "unset" and "arg" |
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* parameters. |
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*/ |
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#define BUG_ON_OPT_NEG(unset) do { \ |
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if ((unset)) \ |
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BUG("option callback does not expect negation"); \ |
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} while (0) |
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#define BUG_ON_OPT_ARG(arg) do { \ |
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if ((arg)) \ |
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BUG("option callback does not expect an argument"); \ |
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} while (0) |
|
|
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/* |
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* Similar to the assertions above, but checks that "arg" is always non-NULL. |
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* This assertion also implies BUG_ON_OPT_NEG(), letting you declare both |
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* assertions in a single line. |
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*/ |
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#define BUG_ON_OPT_NEG_NOARG(unset, arg) do { \ |
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BUG_ON_OPT_NEG(unset); \ |
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if(!(arg)) \ |
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BUG("option callback expects an argument"); \ |
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} while(0) |
|
|
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/*----- incremental advanced APIs -----*/ |
|
|
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/* |
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* It's okay for the caller to consume argv/argc in the usual way. |
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* Other fields of that structure are private to parse-options and should not |
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* be modified in any way. |
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*/ |
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struct parse_opt_ctx_t { |
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const char **argv; |
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const char **out; |
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int argc, cpidx, total; |
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const char *opt; |
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enum parse_opt_flags flags; |
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unsigned has_subcommands; |
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const char *prefix; |
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const char **alias_groups; /* must be in groups of 3 elements! */ |
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struct option *updated_options; |
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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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const struct option *options, |
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enum parse_opt_flags flags); |
|
|
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enum parse_opt_result 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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int parse_options_end(struct parse_opt_ctx_t *ctx); |
|
|
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struct option *parse_options_dup(const struct option *a); |
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struct option *parse_options_concat(const struct option *a, const struct option *b); |
|
|
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/*----- some often used options -----*/ |
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int parse_opt_abbrev_cb(const struct option *, const char *, int); |
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int parse_opt_expiry_date_cb(const struct option *, const char *, int); |
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int parse_opt_color_flag_cb(const struct option *, const char *, int); |
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int parse_opt_verbosity_cb(const struct option *, const char *, int); |
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/* value is struct oid_array* */ |
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int parse_opt_object_name(const struct option *, const char *, int); |
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/* value is struct object_id* */ |
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int parse_opt_object_id(const struct option *, const char *, int); |
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int parse_opt_commits(const struct option *, const char *, int); |
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int parse_opt_commit(const struct option *, const char *, int); |
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int parse_opt_tertiary(const struct option *, const char *, int); |
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int parse_opt_string_list(const struct option *, const char *, int); |
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int parse_opt_strvec(const struct option *, const char *, int); |
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int parse_opt_noop_cb(const struct option *, const char *, int); |
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int parse_opt_passthru(const struct option *, const char *, int); |
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int parse_opt_passthru_argv(const struct option *, const char *, int); |
|
/* value is enum branch_track* */ |
|
int parse_opt_tracking_mode(const struct option *, const char *, int); |
|
|
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#define OPT__VERBOSE(var, h) OPT_COUNTUP('v', "verbose", (var), (h)) |
|
#define OPT__QUIET(var, h) OPT_COUNTUP('q', "quiet", (var), (h)) |
|
#define OPT__VERBOSITY(var) { \ |
|
.type = OPTION_CALLBACK, \ |
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.short_name = 'v', \ |
|
.long_name = "verbose", \ |
|
.value = (var), \ |
|
.help = N_("be more verbose"), \ |
|
.flags = PARSE_OPT_NOARG, \ |
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.callback = &parse_opt_verbosity_cb, \ |
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}, { \ |
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.type = OPTION_CALLBACK, \ |
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.short_name = 'q', \ |
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.long_name = "quiet", \ |
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.value = (var), \ |
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.help = N_("be more quiet"), \ |
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.flags = PARSE_OPT_NOARG, \ |
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.callback = &parse_opt_verbosity_cb, \ |
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} |
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#define OPT__DRY_RUN(var, h) OPT_BOOL('n', "dry-run", (var), (h)) |
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#define OPT__FORCE(var, h, f) OPT_COUNTUP_F('f', "force", (var), (h), (f)) |
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#define OPT__ABBREV(var) { \ |
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.type = OPTION_CALLBACK, \ |
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.long_name = "abbrev", \ |
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.value = (var), \ |
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.argh = N_("n"), \ |
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.help = N_("use <n> digits to display object names"), \ |
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.flags = PARSE_OPT_OPTARG, \ |
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.callback = &parse_opt_abbrev_cb, \ |
|
} |
|
#define OPT__SUPER_PREFIX(var) \ |
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OPT_STRING_F(0, "super-prefix", (var), N_("prefix"), \ |
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N_("prefixed path to initial superproject"), PARSE_OPT_HIDDEN) |
|
|
|
#define OPT__COLOR(var, h) \ |
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OPT_COLOR_FLAG(0, "color", (var), (h)) |
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#define OPT_COLUMN(s, l, v, h) { \ |
|
.type = OPTION_CALLBACK, \ |
|
.short_name = (s), \ |
|
.long_name = (l), \ |
|
.value = (v), \ |
|
.argh = N_("style"), \ |
|
.help = (h), \ |
|
.flags = PARSE_OPT_OPTARG, \ |
|
.callback = parseopt_column_callback, \ |
|
} |
|
#define OPT_PASSTHRU(s, l, v, a, h, f) { \ |
|
.type = OPTION_CALLBACK, \ |
|
.short_name = (s), \ |
|
.long_name = (l), \ |
|
.value = (v), \ |
|
.argh = (a), \ |
|
.help = (h), \ |
|
.flags = (f), \ |
|
.callback = parse_opt_passthru, \ |
|
} |
|
#define OPT_PASSTHRU_ARGV(s, l, v, a, h, f) { \ |
|
.type = OPTION_CALLBACK, \ |
|
.short_name = (s), \ |
|
.long_name = (l), \ |
|
.value = (v), \ |
|
.argh = (a), \ |
|
.help = (h), \ |
|
.flags = (f), \ |
|
.callback = parse_opt_passthru_argv, \ |
|
} |
|
#define _OPT_CONTAINS_OR_WITH(l, v, h, f) { \ |
|
.type = OPTION_CALLBACK, \ |
|
.long_name = (l), \ |
|
.value = (v), \ |
|
.argh = N_("commit"), \ |
|
.help = (h), \ |
|
.flags = PARSE_OPT_LASTARG_DEFAULT | (f), \ |
|
.callback = parse_opt_commits, \ |
|
.defval = (intptr_t) "HEAD", \ |
|
} |
|
#define OPT_CONTAINS(v, h) _OPT_CONTAINS_OR_WITH("contains", v, h, PARSE_OPT_NONEG) |
|
#define OPT_NO_CONTAINS(v, h) _OPT_CONTAINS_OR_WITH("no-contains", v, h, PARSE_OPT_NONEG) |
|
#define OPT_WITH(v, h) _OPT_CONTAINS_OR_WITH("with", v, h, PARSE_OPT_HIDDEN | PARSE_OPT_NONEG) |
|
#define OPT_WITHOUT(v, h) _OPT_CONTAINS_OR_WITH("without", v, h, PARSE_OPT_HIDDEN | PARSE_OPT_NONEG) |
|
#define OPT_CLEANUP(v) OPT_STRING(0, "cleanup", v, N_("mode"), N_("how to strip spaces and #comments from message")) |
|
#define OPT_PATHSPEC_FROM_FILE(v) OPT_FILENAME(0, "pathspec-from-file", v, N_("read pathspec from file")) |
|
#define OPT_PATHSPEC_FILE_NUL(v) OPT_BOOL(0, "pathspec-file-nul", v, N_("with --pathspec-from-file, pathspec elements are separated with NUL character")) |
|
#define OPT_AUTOSTASH(v) OPT_BOOL(0, "autostash", v, N_("automatically stash/stash pop before and after")) |
|
|
|
#endif
|
|
|