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diff --git a/graphics/asymptote/prc/PRCTools/inflation.cc b/graphics/asymptote/prc/PRCTools/inflation.cc
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+/************
+*
+* This file is part of a tool for reading 3D content in the PRC format.
+* Copyright (C) 2008 Orest Shardt <shardtor (at) gmail dot com>
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU Lesser General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public License
+* along with this program. If not, see <http://www.gnu.org/licenses/>.
+*
+*************/
+
+#include "inflation.h"
+
+using std::istream;
+using std::ios;
+using std::cout;
+using std::cerr;
+using std::endl;
+using std::exit;
+
+int decompress(char* inb, int fileLength, char* &outb)
+{
+ const int CHUNK = 16384;
+ unsigned int resultSize = 0;
+
+ outb = (char*) realloc(outb,CHUNK);
+ z_stream strm;
+ strm.zalloc = Z_NULL;
+ strm.zfree = Z_NULL;
+ strm.avail_in = fileLength;
+ strm.next_in = (unsigned char*)inb;
+ strm.opaque = Z_NULL;
+ int code = inflateInit(&strm);
+
+ if(code != Z_OK)
+ return -1;
+
+ strm.next_out = (unsigned char*)outb;
+ strm.avail_out = CHUNK;
+ code = inflate(&strm,Z_NO_FLUSH);
+ resultSize = CHUNK-strm.avail_out;
+
+ unsigned int size = CHUNK;
+ while(code == Z_OK)
+ {
+ outb = (char*) realloc(outb,2*size);
+ if(outb == NULL)
+ {
+ cerr << "Ran out of memory while decompressing." << endl;
+ exit(1);
+ }
+ strm.next_out = (Bytef*)(outb + resultSize);
+ strm.avail_out += size;
+ size *= 2;
+ code = inflate(&strm,Z_NO_FLUSH);
+ resultSize = size - strm.avail_out;
+ }
+
+ code = inflateEnd(&strm);
+ if(code != Z_OK)
+ {
+ free(outb);
+ return 0;
+ }
+
+ return resultSize;
+}
+
+int decompress(istream &input,char* &result)
+{
+ input.seekg(0,ios::end);
+ int fileLength = input.tellg();
+ input.seekg(0,ios::beg);
+
+ char *inb = new char[fileLength];
+ input.read(inb,fileLength);
+
+ int code = decompress(inb,fileLength,result);
+ delete[] inb;
+ return code;
+}