git.sur5r.net Git - cc65/blob - src/sp65/convert.c

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                 convert.c                                 */
   4 /*                                                                           */
   5 /*    Main target conversion module for the sp65 file and bitmap utility     */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2012,      Ullrich von Bassewitz                                      */
  10 /*                Roemerstrasse 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 <stdlib.h>
  37
  38 /* sp65 */
  39 #include "attr.h"
  40 #include "convert.h"
  41 #include "error.h"
  42 #include "koala.h"
  43 #include "lynxsprite.h"
  44 #include "vic2sprite.h"
  45
  46
  47
  48 /*****************************************************************************/
  49 /*                                   Data                                    */
  50 /*****************************************************************************/
  51
  52
  53
  54 /* Type of the entry in the converter table */
  55 typedef struct ConverterMapEntry ConverterMapEntry;
  56 struct ConverterMapEntry {
  57     const char*         Format;
  58     StrBuf*             (*ConvertFunc) (const Bitmap*, const Collection*);
  59 };
  60
  61 /* Converter table, alphabetically sorted */
  62 static const ConverterMapEntry ConverterMap[] = {
  63     {   "koala",                GenKoala        },
  64     {   "lynx-sprite",          GenLynxSprite   },
  65     {   "vic2-sprite",          GenVic2Sprite   },
  66 };
  67
  68
  69
  70 /*****************************************************************************/
  71 /*                                   Code                                    */
  72 /*****************************************************************************/
  73
  74
  75
  76 static int Compare (const void* Key, const void* MapEntry)
  77 /* Compare function for bsearch */
  78 {
  79     return strcmp (Key, ((const ConverterMapEntry*) MapEntry)->Format);
  80 }
  81
  82
  83
  84 StrBuf* ConvertTo (const Bitmap* B, const Collection* A)
  85 /* Convert the bitmap B into some sort of other binary format. The output is
  86  * stored in a string buffer (which is actually a dynamic char array) and
  87  * returned. The actual output format is taken from the "format" attribute
  88  * in the attribute collection A.
  89  */
  90 {
  91     const ConverterMapEntry* E;
  92
  93     /* Get the format to convert to */
  94     const char* Format = NeedAttrVal (A, "format", "convert");
  95
  96     /* Search for the matching converter */
  97     E = bsearch (Format,
  98                  ConverterMap,
  99                  sizeof (ConverterMap) / sizeof (ConverterMap[0]),
 100                  sizeof (ConverterMap[0]),
 101                  Compare);
 102     if (E == 0) {
 103         Error ("No such target format: `%s'", Format);
 104     }
 105
 106     /* Do the conversion */
 107     return E->ConvertFunc (B, A);
 108 }
 109
 110
 111
 112 void ListConversionTargets (FILE* F)
 113 /* Output a list of conversion targets */
 114 {
 115     unsigned I;
 116     for (I = 0; I < sizeof (ConverterMap) / sizeof (ConverterMap[0]); ++I) {
 117         fprintf (F, "  %s\n", ConverterMap[I].Format);
 118     }
 119 }
 120