mirror of https://git.ffmpeg.org/ffmpeg.git
100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
/*
|
|
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
|
|
* Copyright (c) 2007 Mans Rullgard
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
#include "avstring.h"
|
|
#include "mem.h"
|
|
|
|
int av_strstart(const char *str, const char *pfx, const char **ptr)
|
|
{
|
|
while (*pfx && *pfx == *str) {
|
|
pfx++;
|
|
str++;
|
|
}
|
|
if (!*pfx && ptr)
|
|
*ptr = str;
|
|
return !*pfx;
|
|
}
|
|
|
|
int av_stristart(const char *str, const char *pfx, const char **ptr)
|
|
{
|
|
while (*pfx && toupper((unsigned)*pfx) == toupper((unsigned)*str)) {
|
|
pfx++;
|
|
str++;
|
|
}
|
|
if (!*pfx && ptr)
|
|
*ptr = str;
|
|
return !*pfx;
|
|
}
|
|
|
|
char *av_stristr(const char *s1, const char *s2)
|
|
{
|
|
if (!*s2)
|
|
return s1;
|
|
|
|
do {
|
|
if (av_stristart(s1, s2, NULL))
|
|
return s1;
|
|
} while (*s1++);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
size_t av_strlcpy(char *dst, const char *src, size_t size)
|
|
{
|
|
size_t len = 0;
|
|
while (++len < size && *src)
|
|
*dst++ = *src++;
|
|
if (len <= size)
|
|
*dst = 0;
|
|
return len + strlen(src) - 1;
|
|
}
|
|
|
|
size_t av_strlcat(char *dst, const char *src, size_t size)
|
|
{
|
|
size_t len = strlen(dst);
|
|
if (size <= len + 1)
|
|
return len + strlen(src);
|
|
return len + av_strlcpy(dst + len, src, size - len);
|
|
}
|
|
|
|
size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...)
|
|
{
|
|
int len = strlen(dst);
|
|
va_list vl;
|
|
|
|
va_start(vl, fmt);
|
|
len += vsnprintf(dst + len, size > len ? size - len : 0, fmt, vl);
|
|
va_end(vl);
|
|
|
|
return len;
|
|
}
|
|
|
|
char *av_d2str(double d)
|
|
{
|
|
char *str= av_malloc(16);
|
|
if(str) snprintf(str, 16, "%f", d);
|
|
return str;
|
|
}
|