58 lines
1.5 KiB
PHP
58 lines
1.5 KiB
PHP
<?php
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namespace pizzaboxer\ProjectPolygon;
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class Gzip
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{
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// this is to compress models and places to help conserve space
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// this should be used only for models and places, nothing else
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//http://stackoverflow.com/questions/6073397/how-do-you-create-a-gz-file-using-php
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static function Compress(string $inFilename, int $level = 9): string
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{
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// Is the file gzipped already?
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$extension = pathinfo($inFilename, PATHINFO_EXTENSION);
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if ($extension == "gz") { return $inFilename; }
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// Open input file
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$inFile = fopen($inFilename, "rb");
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if ($inFile === false) { throw new \Exception("Unable to open input file: $inFilename"); }
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// Open output file
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$gzFilename = $inFilename.".gz";
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$gzFile = gzopen($gzFilename, "wb".$level);
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if ($gzFile === false)
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{
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fclose($inFile);
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throw new \Exception("Unable to open output file: $gzFilename");
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}
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// Stream copy
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$length = 65536 * 1024; // 512 kB
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while (!feof($inFile)) { gzwrite($gzFile, fread($inFile, $length)); }
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// Close files
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fclose($inFile);
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gzclose($gzFile);
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// Return the new filename
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//delete original
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unlink($inFilename);
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rename($gzFilename, $inFilename);
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return $gzFilename;
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}
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static function Decompress($filename, $buffer_size = 8192)
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{
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$buffer = "";
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$file = gzopen($filename, 'rb');
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while(!gzeof($file)) { $buffer .= gzread($file, $buffer_size); }
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gzclose($file);
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return $buffer;
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}
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static function IsGzEncoded($Data)
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{
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return mb_strpos($Data, "\x1f\x8b\x08") === 0;
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}
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} |