git.sur5r.net Git - cc65/blob - src/common/strutil.c

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                 strutil.h                                 */
   4 /*                                                                           */
   5 /*                         String utility functions                          */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2001-2003 Ullrich von Bassewitz                                       */
  10 /*               Römerstrasse 52                                             */
  11 /*               D-70794 Filderstadt                                         */
  12 /* EMail:        uz@cc65.org                                                 */
  13 /*                                                                           */
  14 /*                                                                           */
  15 /* This software is provided 'as-is', without any expressed or implied       */
  16 /* warranty.  In no event will the authors be held liable for any damages    */
  17 /* arising from the use of this software.                                    */
  18 /*                                                                           */
  19 /* Permission is granted to anyone to use this software for any purpose,     */
  20 /* including commercial applications, and to alter it and redistribute it    */
  21 /* freely, subject to the following restrictions:                            */
  22 /*                                                                           */
  23 /* 1. The origin of this software must not be misrepresented; you must not   */
  24 /*    claim that you wrote the original software. If you use this software   */
  25 /*    in a product, an acknowledgment in the product documentation would be  */
  26 /*    appreciated but is not required.                                       */
  27 /* 2. Altered source versions must be plainly marked as such, and must not   */
  28 /*    be misrepresented as being the original software.                      */
  29 /* 3. This notice may not be removed or altered from any source              */
  30 /*    distribution.                                                          */
  31 /*                                                                           */
  32 /*****************************************************************************/
  33
  34
  35
  36 #include <string.h>
  37 #include <ctype.h>
  38
  39 /* common */
  40 #include "strutil.h"
  41
  42
  43
  44 /*****************************************************************************/
  45 /*                                   Code                                    */
  46 /*****************************************************************************/
  47
  48
  49
  50 char* StrCopy (char* Dest, size_t DestSize, const char* Source)
  51 /* Copy Source to Dest honouring the maximum size of the target buffer. In
  52  * constrast to strncpy, the resulting string will always be NUL terminated.
  53  * The function returns the pointer to the destintation buffer.
  54  */
  55 {
  56     size_t Len = strlen (Source);
  57     if (Len >= DestSize) {
  58         memcpy (Dest, Source, DestSize-1);
  59         Dest[DestSize-1] = '\0';
  60     } else {
  61         memcpy (Dest, Source, Len+1);
  62     }
  63     return Dest;
  64 }
  65
  66
  67
  68 int StrCaseCmp (const char* S1, const char* S2)
  69 /* Compare two strings ignoring case */
  70 {
  71     int Diff;
  72     while ((Diff = toupper (*S1) - toupper (*S2)) == 0 && *S1) {
  73         ++S1;
  74         ++S2;
  75     }
  76     return Diff;
  77 }
  78
  79
  80