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91 lines
3.0 KiB
C
91 lines
3.0 KiB
C
#ifndef INCLUDE_examples_args_h__
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#define INCLUDE_examples_args_h__
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/**
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* Argument-processing helper structure
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*/
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struct args_info {
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int argc;
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char **argv;
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int pos;
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int opts_done : 1; /**< Did we see a -- separator */
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};
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#define ARGS_INFO_INIT { argc, argv, 0, 0 }
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#define ARGS_CURRENT(args) args->argv[args->pos]
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/**
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* Check if a string has the given prefix. Returns 0 if not prefixed
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* or the length of the prefix if it is.
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*/
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extern size_t is_prefixed(const char *str, const char *pfx);
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/**
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* Match an integer string, returning 1 if matched, 0 if not.
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*/
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extern int is_integer(int *out, const char *str, int allow_negative);
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/**
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* Check current `args` entry against `opt` string. If it matches
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* exactly, take the next arg as a string; if it matches as a prefix with
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* an equal sign, take the remainder as a string; if value not supplied,
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* default value `def` will be given. otherwise return 0.
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*/
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extern int optional_str_arg(
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const char **out, struct args_info *args, const char *opt, const char *def);
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/**
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* Check current `args` entry against `opt` string. If it matches
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* exactly, take the next arg as a string; if it matches as a prefix with
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* an equal sign, take the remainder as a string; otherwise return 0.
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*/
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extern int match_str_arg(
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const char **out, struct args_info *args, const char *opt);
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/**
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* Check current `args` entry against `opt` string parsing as uint16. If
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* `opt` matches exactly, take the next arg as a uint16_t value; if `opt`
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* is a prefix (equal sign optional), take the remainder of the arg as a
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* uint16_t value; otherwise return 0.
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*/
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extern int match_uint16_arg(
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uint16_t *out, struct args_info *args, const char *opt);
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/**
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* Check current `args` entry against `opt` string parsing as uint32. If
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* `opt` matches exactly, take the next arg as a uint16_t value; if `opt`
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* is a prefix (equal sign optional), take the remainder of the arg as a
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* uint32_t value; otherwise return 0.
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*/
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extern int match_uint32_arg(
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uint32_t *out, struct args_info *args, const char *opt);
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/**
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* Check current `args` entry against `opt` string parsing as int. If
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* `opt` matches exactly, take the next arg as an int value; if it matches
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* as a prefix (equal sign optional), take the remainder of the arg as a
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* int value; otherwise return 0.
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*/
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extern int match_int_arg(
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int *out, struct args_info *args, const char *opt, int allow_negative);
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/**
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* Check current `args` entry against a "bool" `opt` (ie. --[no-]progress).
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* If `opt` matches positively, out will be set to 1, or if `opt` matches
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* negatively, out will be set to 0, and in both cases 1 will be returned.
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* If neither the positive or the negative form of opt matched, out will be -1,
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* and 0 will be returned.
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*/
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extern int match_bool_arg(int *out, struct args_info *args, const char *opt);
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/**
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* Check if we're processing past the single -- separator
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*/
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extern int match_arg_separator(struct args_info *args);
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/**
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* Consume all remaining arguments in a git_strarray
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*/
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extern void strarray_from_args(git_strarray *array, struct args_info *args);
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#endif
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