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82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
#ifndef NOTMUCH_OPTS_H
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#define NOTMUCH_OPTS_H
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#include <stdbool.h>
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#include "notmuch.h"
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/*
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* Describe one of the possibilities for a keyword option
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* 'value' will be copied to the output variable
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*/
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typedef struct notmuch_keyword {
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const char *name;
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int value;
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} notmuch_keyword_t;
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/* Describe one option. */
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typedef struct notmuch_opt_desc {
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/* One and only one of opt_* must be set. */
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const struct notmuch_opt_desc *opt_inherit;
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bool *opt_bool;
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int *opt_int;
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int *opt_keyword;
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int *opt_flags;
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const char **opt_string;
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const char **opt_position;
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/* for opt_keyword only: if no matching arguments were found, and
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* keyword_no_arg_value is set, then use keyword_no_arg_value instead. */
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const char *keyword_no_arg_value;
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/* Must be set except for opt_inherit and opt_position. */
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const char *name;
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/* Optional, if non-NULL, set to true if the option is present. */
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bool *present;
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/* Optional, allow empty strings for opt_string. */
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bool allow_empty;
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/* Must be set for opt_keyword and opt_flags. */
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const struct notmuch_keyword *keywords;
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} notmuch_opt_desc_t;
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/*
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* This is the main entry point for command line argument parsing.
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*
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* Parse command line arguments according to structure options,
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* starting at position opt_index.
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*
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* All output of parsed values is via pointers in options.
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*
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* Parsing stops at -- (consumed) or at the (k+1)st argument
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* not starting with -- (a "positional argument") if options contains
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* k positional argument descriptors.
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*
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* Returns the index of first non-parsed argument, or -1 in case of error.
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*
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*/
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int
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parse_arguments (int argc, char **argv, const notmuch_opt_desc_t *options, int opt_index);
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/*
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* If the argument parsing loop provided by parse_arguments is not
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* flexible enough, then the user might be interested in the following
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* routines, but note that the API to parse_option might have to
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* change. See command-line-arguments.c for descriptions of these
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* functions.
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*/
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int
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parse_option (int argc, char **argv, const notmuch_opt_desc_t *options, int opt_index);
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bool
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parse_position_arg (const char *arg,
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int position_arg_index,
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const notmuch_opt_desc_t *options);
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#endif
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