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 "geosbitmap.h"
  43 #include "geosicon.h"
  44 #include "koala.h"
  45 #include "lynxsprite.h"
  46 #include "raw.h"
  47 #include "vic2sprite.h"
  48
  49
  50
  51 /*****************************************************************************/
  52 /*                                   Data                                    */
  53 /*****************************************************************************/
  54
  55
  56
  57 /* Type of the entry in the converter table */
  58 typedef struct ConverterMapEntry ConverterMapEntry;
  59 struct ConverterMapEntry {
  60     const char*         Format;
  61     StrBuf*             (*ConvertFunc) (const Bitmap*, const Collection*);
  62 };
  63
  64 /* Converter table, alphabetically sorted */
  65 static const ConverterMapEntry ConverterMap[] = {
  66     {   "geos-bitmap",          GenGeosBitmap   },
  67     {   "geos-icon",            GenGeosIcon     },
  68     {   "koala",                GenKoala        },
  69     {   "lynx-sprite",          GenLynxSprite   },
  70     {   "raw",                  GenRaw          },
  71     {   "vic2-sprite",          GenVic2Sprite   },
  72 };
  73
  74
  75
  76 /*****************************************************************************/
  77 /*                                   Code                                    */
  78 /*****************************************************************************/
  79
  80
  81
  82 static int Compare (const void* Key, const void* MapEntry)
  83 /* Compare function for bsearch */
  84 {
  85     return strcmp (Key, ((const ConverterMapEntry*) MapEntry)->Format);
  86 }
  87
  88
  89
  90 StrBuf* ConvertTo (const Bitmap* B, const Collection* A)
  91 /* Convert the bitmap B into some sort of other binary format. The output is
  92 ** stored in a string buffer (which is actually a dynamic char array) and
  93 ** returned. The actual output format is taken from the "format" attribute
  94 ** in the attribute collection A.
  95 */
  96 {
  97     const ConverterMapEntry* E;
  98
  99     /* Get the format to convert to */
 100     const char* Format = NeedAttrVal (A, "format", "convert");
 101
 102     /* Search for the matching converter */
 103     E = bsearch (Format,
 104                  ConverterMap,
 105                  sizeof (ConverterMap) / sizeof (ConverterMap[0]),
 106                  sizeof (ConverterMap[0]),
 107                  Compare);
 108     if (E == 0) {
 109         Error ("No such target format: '%s'", Format);
 110     }
 111
 112     /* Do the conversion */
 113     return E->ConvertFunc (B, A);
 114 }
 115
 116
 117
 118 void ListConversionTargets (FILE* F)
 119 /* Output a list of conversion targets */
 120 {
 121     unsigned I;
 122     for (I = 0; I < sizeof (ConverterMap) / sizeof (ConverterMap[0]); ++I) {
 123         fprintf (F, "  %s\n", ConverterMap[I].Format);
 124     }
 125 }