Statistics
| Branch: | Revision:

ffmpeg / libavutil / avstring.c @ 68006ed0

History | View | Annotate | Download (2.34 KB)

1 fc78ce80 Måns Rullgård
/*
2
 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
3
 * Copyright (c) 2007 Mans Rullgard
4
 *
5
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
9
 * License as published by the Free Software Foundation; either
10
 * version 2.1 of the License, or (at your option) any later version.
11
 *
12
 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16
 *
17
 * You should have received a copy of the GNU Lesser General Public
18
 * License along with FFmpeg; if not, write to the Free Software
19
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 */
21
22 1e7f3638 Luca Abeni
#include <stdarg.h>
23
#include <stdio.h>
24 fc78ce80 Måns Rullgård
#include <string.h>
25
#include <ctype.h>
26
#include "avstring.h"
27 64b12fc3 Michael Niedermayer
#include "mem.h"
28 fc78ce80 Måns Rullgård
29
int av_strstart(const char *str, const char *pfx, const char **ptr)
30
{
31 059eeabf Måns Rullgård
    while (*pfx && *pfx == *str) {
32
        pfx++;
33
        str++;
34
    }
35 fc78ce80 Måns Rullgård
    if (!*pfx && ptr)
36
        *ptr = str;
37
    return !*pfx;
38
}
39
40
int av_stristart(const char *str, const char *pfx, const char **ptr)
41
{
42 059eeabf Måns Rullgård
    while (*pfx && toupper((unsigned)*pfx) == toupper((unsigned)*str)) {
43
        pfx++;
44
        str++;
45
    }
46 fc78ce80 Måns Rullgård
    if (!*pfx && ptr)
47
        *ptr = str;
48
    return !*pfx;
49
}
50
51 ac6ef868 Måns Rullgård
char *av_stristr(const char *s1, const char *s2)
52
{
53
    if (!*s2)
54
        return s1;
55
56
    do {
57
        if (av_stristart(s1, s2, NULL))
58
            return s1;
59
    } while (*s1++);
60
61
    return NULL;
62
}
63
64 fc78ce80 Måns Rullgård
size_t av_strlcpy(char *dst, const char *src, size_t size)
65
{
66
    size_t len = 0;
67
    while (++len < size && *src)
68
        *dst++ = *src++;
69
    if (len <= size)
70
        *dst = 0;
71
    return len + strlen(src) - 1;
72
}
73
74
size_t av_strlcat(char *dst, const char *src, size_t size)
75
{
76
    size_t len = strlen(dst);
77
    if (size <= len + 1)
78
        return len + strlen(src);
79
    return len + av_strlcpy(dst + len, src, size - len);
80
}
81 1e7f3638 Luca Abeni
82
size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...)
83
{
84
    int len = strlen(dst);
85
    va_list vl;
86
87
    va_start(vl, fmt);
88
    len += vsnprintf(dst + len, size > len ? size - len : 0, fmt, vl);
89
    va_end(vl);
90
91
    return len;
92
}
93 277c7332 Michael Niedermayer
94 b3e88ae8 Michael Niedermayer
char *av_d2str(double d)
95
{
96 277c7332 Michael Niedermayer
    char *str= av_malloc(16);
97
    if(str) snprintf(str, 16, "%f", d);
98
    return str;
99
}