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<?php |
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namespace HexMakina\LocalFS\Text; |
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class TextFile extends \HexMakina\LocalFS\File |
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{ |
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public static function identical($filepath_1, $filepath_2, $read_length = 8192) |
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{ |
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//** TEST FOR EXISTENCE |
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if (!file_exists($filepath_1) || !file_exists($filepath_2)) { |
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throw new \Exception('file_exists false'); |
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} |
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//** TEST FOR SYMLINK |
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$filepath_1 = self::resolve_symlink($filepath_1); |
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$filepath_2 = self::resolve_symlink($filepath_2); |
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//** TEST FOR IDENTICAL TYPE AND SIZE |
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if (filetype($filepath_1) !== filetype($filepath_2) || filesize($filepath_1) !== filesize($filepath_2)) { |
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return false; |
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} |
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//** TEST FOR IDENTICAL CONTENT |
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return self::compare_content($filepath_1, $filepath_2, $read_length); |
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} |
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public static function compare_content($filepath_1, $filepath_2, $read_length = 8192) : bool |
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{ |
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$file_1 = new TextFile($filepath_1, 'r'); |
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$file_2 = new TextFile($filepath_2, 'r'); |
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if ($file_1->size() !== $file_2->size()) { |
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return false; |
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} |
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$identical = true; |
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while (!feof($file_1->pointer()) && $identical === true) { |
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$chunk_1 = fread($file_1->pointer(), $read_length); |
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$chunk_2 = fread($file_2->pointer(), $read_length); |
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if ($chunk_1 === false || $chunk_2 === false) { |
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$file_1->close(); |
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$file_2->close(); |
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throw new \RuntimeException('fread failure'); |
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} |
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$identical = $chunk_1 === $chunk_2; // must be last loop line |
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} |
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$file_1->close(); |
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$file_2->close(); |
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return $identical; |
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} |
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public function __toString() |
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{ |
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return file_get_contents($this->filepath()); |
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} |
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} |
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HexMakina /
LocalFS
