60 lines
2.9 KiB
C
60 lines
2.9 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2021 William Wilgus
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
****************************************************************************/
|
|
#ifndef _LIB_ARG_HELPER_H_
|
|
#define _LIB_ARG_HELPER_H_
|
|
|
|
#include "plugin.h"
|
|
|
|
#define ARGPARSE_MAX_FRAC_DIGITS 9 /* Uses 30 bits max (0.999999999) */
|
|
|
|
#define ARGP_EXP(a, b) (a ##E## b)
|
|
#define ARGP_FRAC_DEC_MULTIPLIER(n) AP_EXP(1,n) /*1x10^n*/
|
|
#define ARGPARSE_FRAC_DEC_MULTIPLIER \
|
|
(long)ARGP_FRAC_DEC_MULTIPLIER(ARGPARSE_MAX_FRAC_DIGITS)
|
|
|
|
/* fills buf with a string upto buf_sz, null terminates the buffer
|
|
* strings break on WS by default but can be enclosed in single or double quotes
|
|
* opening and closing quotes will not be included in the buffer but will be counted
|
|
* use alternating quotes if you really want them included '"text"' or "'text'"
|
|
* failure to close the string will result in eating all remaining args till \0
|
|
* If buffer full remaining chars are discarded till stopchar or \0 is reached */
|
|
int string_parse(const char **parameter, char* buf, size_t buf_sz);
|
|
/* passes *character a single character eats remaining non-WS characters */
|
|
int char_parse(const char **parameter, char* character);
|
|
/* determine true false using the first character the rest are skipped/ignored */
|
|
int bool_parse(const char **parameter, bool *choice);
|
|
/* passes number and or decimal portion of number base 10 only.. */
|
|
int longnum_parse(const char **parameter, long *number, long *decimal);
|
|
int num_parse(const char **parameter, int *number, int *decimal);
|
|
|
|
/*
|
|
*argparse(const char *parameter, int parameter_len,
|
|
* int (*arg_callback)(char argchar, const char **parameter))
|
|
* parameter : constant char string of arguments
|
|
* parameter_len : may be set to -1 if your parameter string is NULL (\0) terminated
|
|
* arg_callback : function gets called for each SWCHAR found in the parameter string
|
|
* Note: WS at beginning is stripped, **parameter starts at the first NON WS char
|
|
* return 0 for arg_callback to quit parsing immediately
|
|
*/
|
|
void argparse(const char *parameter, int parameter_len,
|
|
int (*arg_callback)(char argchar, const char **parameter));
|
|
|
|
#endif /* _LIB_ARG_HELPER_H_ */
|