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<?php |
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/* |
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* This file is part of the overtrue/pinyin. |
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* |
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* (c) 2016 Seven Du <[email protected]> |
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*/ |
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namespace Overtrue\Pinyin; |
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use Closure; |
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use Exception; |
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use SplFileObject; |
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use Generator; |
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/** |
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* Generator syntax(yield) Dict File loader. |
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*/ |
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class GeneratorFileDictLoader implements DictLoaderInterface |
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{ |
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/** |
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* Data directory. |
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* |
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* @var string |
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*/ |
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protected $path; |
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/** |
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* Words segment name. |
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* |
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* @var string |
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*/ |
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protected $segmentName = 'words_%s'; |
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/** |
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* SplFileObjects. |
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* |
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* @var array |
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*/ |
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protected static $handles = []; |
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/** |
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* surnames. |
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* |
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* @var SplFileObject |
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*/ |
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protected static $surnamesHandle; |
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/** |
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* Constructor. |
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* |
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* @param string $path |
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*/ |
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public function __construct($path) |
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{ |
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$this->path = $path; |
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for ($i = 0; $i < 100; ++$i) { |
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$segment = $this->path.'/'.sprintf($this->segmentName, $i); |
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if (file_exists($segment) && is_file($segment)) { |
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array_push(static::$handles, $this->openFile($segment)); |
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} |
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} |
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} |
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/** |
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* Construct a new file object. |
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* |
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* @param string $filename file path |
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* @return SplFileObject |
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*/ |
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protected function openFile($filename, $mode = 'r') |
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{ |
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return new SplFileObject($filename, $mode); |
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} |
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/** |
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* get Generator syntax. |
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* |
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* @param array $handles SplFileObjects |
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*/ |
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protected function getGenerator(array $handles) |
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{ |
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foreach ($handles as $handle) { |
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$handle->seek(0); |
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while ($handle->eof() === false) { |
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$string = str_replace(['\'', ' ', PHP_EOL, ','], '', $handle->fgets()); |
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if (strpos($string, '=>') === false) { |
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continue; |
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} |
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list($string, $pinyin) = explode('=>', $string); |
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yield $string => $pinyin; |
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} |
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} |
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} |
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/** |
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* Traverse the stream. |
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* |
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* @param Generator $generator |
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* @param Closure $callback |
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* @author Seven Du <[email protected]> |
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*/ |
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protected function traversing(Generator $generator, Closure $callback) |
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{ |
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foreach ($generator as $string => $pinyin) { |
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$callback([$string => $pinyin]); |
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} |
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} |
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/** |
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* Load dict. |
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* |
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* @param Closure $callback |
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*/ |
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public function map(Closure $callback) |
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{ |
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$this->traversing($this->getGenerator(static::$handles), $callback); |
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} |
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/** |
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* Load surname dict. |
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* |
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* @param Closure $callback |
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*/ |
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public function mapSurname(Closure $callback) |
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{ |
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if (!static::$surnamesHandle instanceof SplFileObject) { |
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$surnameFilename = $this->path.'/surnames'; |
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static::$surnamesHandle = $this->openFile($surnameFilename); |
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} |
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$this->traversing($this->getGenerator([static::$surnamesHandle]), $callback); |
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} |
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} |
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overtrue /
pinyin
