83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
/*
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* Copyright (C) 2022-2024 Jordan Bancino <@jordan:bancino.net>
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef CYTOPLASM_ARGS_H
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#define CYTOPLASM_ARGS_H
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/***
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* @Nm Args
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* @Nd Getopt-style argument parser that operates on arrays.
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* @Dd May 12 2023
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* @Xr Array
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*
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* .Nm
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* provides a simple argument parser in the style of
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* .Xr getopt 3 .
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* It exists because the runtime passes the program arguments as
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* an Array, and it is often useful to parse the arguments to
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* provide the standard command line interface.
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*/
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#include "Array.h"
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/**
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* All state is stored in this structure, instead of global
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* variables. This makes
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* .Nm
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* thread-safe and easy to reset.
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*/
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typedef struct ArgParseState
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{
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int optInd;
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int optErr;
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int optOpt;
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char *optArg;
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int optPos;
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} ArgParseState;
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/**
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* Initialize the variables in the given parser state structure
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* to their default values. This should be called before
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* .Fn ArgParse
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* is called with the parser state. It should also be called if
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* .Fn ArgParse
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* will be used again on a different array, or the same array all
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* over again.
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*/
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extern void ArgParseStateInit(ArgParseState *);
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/**
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* Parse command line arguments stored in the given array, using
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* the given state and option string. This function behaves
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* identically to the POSIX
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* .Fn getopt
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* function, and should be used in exactly the same way. Refer to
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* your system's
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* .Xr getopt 3
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* page for details.
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*/
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extern int ArgParse(ArgParseState *, Array *, const char *);
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#endif /* CYTOPLASM_ARGS_H */
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