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) 2022 by 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#include "config.h"
22
23#include <stddef.h>
24#include <string.h>
25#include "strtok_r.h"
26/* strptokspn_r is a custom implementation of strtok_r that does NOT modify
27 * the source string.
28 *
29 * strptokspn_r reads ptr as a series of zero or more tokens,
30 * and sep as delimiters of the tokens
31 * The tokens can be separated by one or more of the delimiters
32 * first call searches for the first token skipping over any leading delimiters.
33 * Returns pointer to first token
34 * Pointer *len contains the span to the first delimeter
35 * (this would be the resulting strlen had token actually been NULL terminated)
36 * Pointer **end contains pointer to first character after the last delimeter
37 *
38 * When strptokspn_r is called with a ptr == NULL, the next token is read from
39 * Pointer **end
40 *
41 * Note the returned token is NOT NULL terminated by the function as in strtok_r
42 * However the caller can use ret[len] = '\0'; to emulate a call to strtok_r
43*/
44const char *strptokspn_r(const char *ptr, const char *sep, size_t *len, const char **end)
45{
46 if (ptr == NULL) /* we got NULL input so then we get last position instead */
47 {
48 ptr = *end;
49 }
50
51 /* pass all letters that are including in the separator string */
52 while (*ptr && strchr(sep, *ptr))
53 ++ptr;
54
55 if (*ptr != '\0')
56 {
57 /* so this is where the next piece of string starts */
58 const char *start = ptr;
59 *len = strcspn(ptr, sep); /* Get span until any sep character in string */
60 *end = ptr + *len;
61 if (**end) /* the end is not a null byte */
62 ++*end;
63 return start;
64 }
65 return NULL;
66}
67
68#if !defined(HAVE_STRTOK_R)
69char * strtok_r(char *ptr, const char *sep, char **end)
70{
71 size_t len;
72 char * ret = (char*) strptokspn_r((const char*)ptr, sep, &len, (const char**) end);
73 if (ret)
74 ret[len] = '\0';
75 return ret;
76}
77#endif