cf009b4cbb
full commandline parsing
-has pitch, speed, time_stretch
/* pitch_screen
* accepts args -q, -g, -p=, -s=, -k=; (= sign is optional)
* -q silences output splash
* -g runs the gui (Runs immediately)
* -p100 would set pitch to 100%
* -s=90 sets speed to 90% if timestrech is enabled
* -k=true -k1 enables time stretch -k0 -kf-kn disables
*/
Change-Id: I900c4b5d184e12ddbe47509f66fdf3e55193a520
60 lines
2.9 KiB
C
60 lines
2.9 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2021 William Wilgus
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef _LIB_ARG_HELPER_H_
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#define _LIB_ARG_HELPER_H_
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#include "plugin.h"
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#define ARGPARSE_MAX_FRAC_DIGITS 9 /* Uses 30 bits max (0.999999999) */
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#define ARGP_EXP(a, b) (a ##E## b)
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#define ARGP_FRAC_DEC_MULTIPLIER(n) ARGP_EXP(1,n) /*1x10^n*/
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#define ARGPARSE_FRAC_DEC_MULTIPLIER \
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(long)ARGP_FRAC_DEC_MULTIPLIER(ARGPARSE_MAX_FRAC_DIGITS)
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/* fills buf with a string upto buf_sz, null terminates the buffer
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* strings break on WS by default but can be enclosed in single or double quotes
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* opening and closing quotes will not be included in the buffer but will be counted
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* use alternating quotes if you really want them included '"text"' or "'text'"
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* failure to close the string will result in eating all remaining args till \0
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* If buffer full remaining chars are discarded till stopchar or \0 is reached */
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int string_parse(const char **parameter, char* buf, size_t buf_sz);
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/* passes *character a single character eats remaining non-WS characters */
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int char_parse(const char **parameter, char* character);
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/* determine true false using the first character the rest are skipped/ignored */
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int bool_parse(const char **parameter, bool *choice);
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/* passes number and or decimal portion of number base 10 only.. */
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int longnum_parse(const char **parameter, long *number, long *decimal);
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int num_parse(const char **parameter, int *number, int *decimal);
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/*
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*argparse(const char *parameter, int parameter_len,
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* int (*arg_callback)(char argchar, const char **parameter))
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* parameter : constant char string of arguments
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* parameter_len : may be set to -1 if your parameter string is NULL (\0) terminated
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* arg_callback : function gets called for each SWCHAR found in the parameter string
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* Note: WS at beginning is stripped, **parameter starts at the first NON WS char
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* return 0 for arg_callback to quit parsing immediately
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*/
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void argparse(const char *parameter, int parameter_len,
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int (*arg_callback)(char argchar, const char **parameter));
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#endif /* _LIB_ARG_HELPER_H_ */
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