mplayer/avstring.c

   1 /*
   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 #include <stdarg.h>
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <ctype.h>
  26 #include "avstring.h"
  27 #include "mem.h"
  28
  29 int av_strstart(const char *str, const char *pfx, const char **ptr)
  30 {
  31     while (*pfx && *pfx == *str) {
  32         pfx++;
  33         str++;
  34     }
  35     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     while (*pfx && toupper((unsigned)*pfx) == toupper((unsigned)*str)) {
  43         pfx++;
  44         str++;
  45     }
  46     if (!*pfx && ptr)
  47         *ptr = str;
  48     return !*pfx;
  49 }
  50
  51 size_t av_strlcpy(char *dst, const char *src, size_t size)
  52 {
  53     size_t len = 0;
  54     while (++len < size && *src)
  55         *dst++ = *src++;
  56     if (len <= size)
  57         *dst = 0;
  58     return len + strlen(src) - 1;
  59 }
  60
  61 size_t av_strlcat(char *dst, const char *src, size_t size)
  62 {
  63     size_t len = strlen(dst);
  64     if (size <= len + 1)
  65         return len + strlen(src);
  66     return len + av_strlcpy(dst + len, src, size - len);
  67 }
  68
  69 size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...)
  70 {
  71     int len = strlen(dst);
  72     va_list vl;
  73
  74     va_start(vl, fmt);
  75     len += vsnprintf(dst + len, size > len ? size - len : 0, fmt, vl);
  76     va_end(vl);
  77
  78     return len;
  79 }
  80 /*
  81 char *av_d2str(double d)
  82 {
  83     char *str= av_malloc(16);
  84     if(str) snprintf(str, 16, "%f", d);
  85     return str;
  86 }
  87 */