src/flstring.c

   1 /*
   2  * "$Id: flstring.c 7903 2010-11-28 21:06:39Z matt $"
   3  *
   4  * BSD string functions for the Fast Light Tool Kit (FLTK).
   5  *
   6  * Copyright 1998-2010 by Bill Spitzak and others.
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Library General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Library General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Library General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21  * USA.
  22  *
  23  * Please report all bugs and problems on the following page:
  24  *
  25  *     http://www.fltk.org/str.php
  26  */
  27
  28 #include "flstring.h"
  29
  30
  31 /*
  32  * 'fl_strlcat()' - Safely concatenate two strings.
  33  */
  34
  35 size_t                          /* O - Length of string */
  36 fl_strlcat(char       *dst,     /* O - Destination string */
  37            const char *src,     /* I - Source string */
  38            size_t     size) {   /* I - Size of destination string buffer */
  39   size_t        srclen;         /* Length of source string */
  40   size_t        dstlen;         /* Length of destination string */
  41
  42
  43  /*
  44   * Figure out how much room is left...
  45   */
  46
  47   dstlen = strlen(dst);
  48   size   -= dstlen + 1;
  49
  50   if (!size) return (dstlen);   /* No room, return immediately... */
  51
  52  /*
  53   * Figure out how much room is needed...
  54   */
  55
  56   srclen = strlen(src);
  57
  58  /*
  59   * Copy the appropriate amount...
  60   */
  61
  62   if (srclen > size) srclen = size;
  63
  64   memcpy(dst + dstlen, src, srclen);
  65   dst[dstlen + srclen] = '\0';
  66
  67   return (dstlen + srclen);
  68 }
  69
  70
  71 /*
  72  * 'fl_strlcpy()' - Safely copy two strings.
  73  */
  74
  75 size_t                          /* O - Length of string */
  76 fl_strlcpy(char       *dst,     /* O - Destination string */
  77            const char *src,     /* I - Source string */
  78            size_t      size) {  /* I - Size of destination string buffer */
  79   size_t        srclen;         /* Length of source string */
  80
  81
  82  /*
  83   * Figure out how much room is needed...
  84   */
  85
  86   size --;
  87
  88   srclen = strlen(src);
  89
  90  /*
  91   * Copy the appropriate amount...
  92   */
  93
  94   if (srclen > size) srclen = size;
  95
  96   memcpy(dst, src, srclen);
  97   dst[srclen] = '\0';
  98
  99   return (srclen);
 100 }
 101
 102
 103 /*
 104  * End of "$Id: flstring.c 7903 2010-11-28 21:06:39Z matt $".
 105  */