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

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                  fname.c                                  */
   4 /*                                                                           */
   5 /*                       File name handling utilities                        */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2000      Ullrich von Bassewitz                                       */
  10 /*               Wacholderweg 14                                             */
  11 /*               D-70597 Stuttgart                                           */
  12 /* EMail:        uz@musoftware.de                                            */
  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
  38 #include "xmalloc.h"
  39 #include "fname.h"
  40
  41
  42
  43 /*****************************************************************************/
  44 /*                                   Code                                    */
  45 /*****************************************************************************/
  46
  47
  48
  49 char* MakeFilename (const char* Origin, const char* Ext)
  50 /* Make a new file name from Origin and Ext. If Origin has an extension, it
  51  * is removed and Ext is appended. If Origin has no extension, Ext is simply
  52  * appended. The result is placed in a malloc'ed buffer and returned.
  53  * The function may be used to create "foo.o" from "foo.s".
  54  */
  55 {
  56     /* Construct the name */
  57     char* Result;
  58     const char* P = strrchr (Origin, '.');
  59     if (P == 0) {
  60         /* No dot, add the extension */
  61         Result = xmalloc (strlen (Origin) + strlen (Ext) + 1);
  62         strcpy (Result, Origin);
  63         strcat (Result, Ext);
  64     } else {
  65         Result = xmalloc (P - Origin + strlen (Ext) + 1);
  66         memcpy (Result, Origin, P - Origin);
  67         strcpy (Result + (P - Origin), Ext);
  68     }
  69     return Result;
  70 }
  71
  72
  73