utils/dlang/zgrab_copy.d

   1 import arsd.image;
   2 import iv.vfs.io;
   3
   4
   5 PNG *loadPng (string fname) {
   6   import std.file;
   7   return readPng(cast(ubyte[])read(fname));
   8 }
   9
  10
  11 Chunk clone (Chunk *cc) {
  12   Chunk res;
  13   res.size = cc.size;
  14   res.type[] = cc.type[];
  15   res.payload = cc.payload.dup;
  16   res.checksum = cc.checksum;
  17   return res;
  18 }
  19
  20 void main (string[] args) {
  21   assert(args.length == 3);
  22   auto png = loadPng(args[1]);
  23   Chunk grab = png.getChunk("grAb").clone;
  24   if (grab.size != 8) assert(0);
  25   {
  26     int ofsx = grab.payload[3]|(grab.payload[2]<<8)|(grab.payload[1]<<16)|(grab.payload[0]<<24);
  27     int ofsy = grab.payload[4+3]|(grab.payload[4+2]<<8)|(grab.payload[4+1]<<16)|(grab.payload[4+0]<<24);
  28     writeln("  offset: (", ofsx, ", ", ofsy, ")");
  29   }
  30   auto destpng = loadPng(args[2]);
  31   foreach (ref const cc; destpng.chunks) {
  32     if (cast(const(char)[])cc.type[] == "grAb") {
  33       //writeln("  ", cc.payload);
  34       int ofsx = cc.payload[3]|(cc.payload[2]<<8)|(cc.payload[1]<<16)|(cc.payload[0]<<24);
  35       int ofsy = cc.payload[4+3]|(cc.payload[4+2]<<8)|(cc.payload[4+1]<<16)|(cc.payload[4+0]<<24);
  36       writeln("  offset: (", ofsx, ", ", ofsy, ")");
  37       assert(0);
  38     }
  39   }
  40   destpng.insertChunk(&grab, true);
  41   destpng.length = 0;
  42   import std.file;
  43   std.file.write(args[2], writePng(destpng));
  44 }