mirror of
https://github.com/stevenhowes/CTheEscape.git
synced 2026-05-26 15:53:29 +01:00
stevenhowes
70 lines
1.4 KiB
PHP
70 lines
1.4 KiB
PHP
<?php
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function map_compress($data)
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{
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$base64 = base64_encode($data);
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$newstring = "";
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$array = str_split($base64);
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$array[] = ".";
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$consec = 1;
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for($i = 0; $i < strlen($base64);$i++)
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{
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if(($array[$i] != $array[$i+1]) || ($consec == 255))
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{
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if($consec > 3)
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$newstring .= ">" . chr($consec) . $array[$i];
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else
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$newstring .= str_repeat($array[$i],$consec);
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$consec = 1;
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}else{
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$consec++;
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}
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}
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return $newstring;
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}
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function map_decompress($data)
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{
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$newstring = "";
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$array = str_split($data);
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$inrep = 0;
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$repcount = "";
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for($i = 0; $i < strlen($data);$i++)
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{
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if(($array[$i] == ">") && ($inrep == 0))
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$inrep = 1;
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elseif($inrep == 1)
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{
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$inrep = 0;
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$repcount .= $array[$i];
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}
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else
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{
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if($repcount != "")
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{
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$newstring .= str_repeat($array[$i],intval(ord($repcount)));
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$repcount = "";
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}
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else
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{
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$newstring .= $array[$i];
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}
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}
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}
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return base64_decode($newstring);
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}
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$mapdata = file_get_contents("S:\\RiscOSDev\\rpcemu-win32-0.9.3-bundle-371-issue-1\\RPCEmu - 371\\hostfs\\Dev\\!TheEsc\\m2_map,ffd");
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echo "In Raw " . md5($mapdata). " " . strlen($mapdata). "\n";
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$compressedstring = map_compress($mapdata);
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echo "Cmprssd " . md5($compressedstring). " " . strlen($compressedstring). "\n";
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$decompressedstring = map_decompress($compressedstring);
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echo "Out Raw " .md5($decompressedstring). " " . strlen($decompressedstring). "\n";
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?>
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