tsiry-sandratraina.com
A modern Music Player Daemon based on Rockbox open source high quality audio player
libadwaita
audio
rust
zig
deno
mpris
rockbox
mpd
1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2021 William Wilgus
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21#ifndef _LIB_ARG_HELPER_H_
22#define _LIB_ARG_HELPER_H_
23
24#include "plugin.h"
25
26#define ARGPARSE_MAX_FRAC_DIGITS 9 /* Uses 30 bits max (0.999999999) */
27
28#define ARGP_EXP(a, b) (a ##E## b)
29#define ARGP_FRAC_DEC_MULTIPLIER(n) ARGP_EXP(1,n) /*1x10^n*/
30#define ARGPARSE_FRAC_DEC_MULTIPLIER \
31 (long)ARGP_FRAC_DEC_MULTIPLIER(ARGPARSE_MAX_FRAC_DIGITS)
32
33/* fills buf with a string upto buf_sz, null terminates the buffer
34 * strings break on WS by default but can be enclosed in single or double quotes
35 * opening and closing quotes will not be included in the buffer but will be counted
36 * use alternating quotes if you really want them included '"text"' or "'text'"
37 * failure to close the string will result in eating all remaining args till \0
38 * If buffer full remaining chars are discarded till stopchar or \0 is reached */
39int string_parse(const char **parameter, char* buf, size_t buf_sz);
40/* passes *character a single character eats remaining non-WS characters */
41int char_parse(const char **parameter, char* character);
42/* determine true false using the first character the rest are skipped/ignored */
43int bool_parse(const char **parameter, bool *choice);
44/* passes number and or decimal portion of number base 10 only.. */
45int longnum_parse(const char **parameter, long *number, long *decimal);
46int num_parse(const char **parameter, int *number, int *decimal);
47
48/*
49*argparse(const char *parameter, int parameter_len,
50* int (*arg_callback)(char argchar, const char **parameter))
51* parameter : constant char string of arguments
52* parameter_len : may be set to -1 if your parameter string is NULL (\0) terminated
53* arg_callback : function gets called for each SWCHAR found in the parameter string
54* Note: WS at beginning is stripped, **parameter starts at the first NON WS char
55* return 0 for arg_callback to quit parsing immediately
56*/
57void argparse(const char *parameter, int parameter_len, void *userdata,
58 int (*arg_callback)(char argchar, const char **parameter, void *userdata));
59
60#endif /* _LIB_ARG_HELPER_H_ */