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<?php |
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namespace Sofa\Eloquence\Searchable; |
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use Sofa\Eloquence\Contracts\Searchable\Parser as ParserContract; |
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class Parser implements ParserContract |
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{ |
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/** |
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* Default search weight. |
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* |
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* @var int |
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*/ |
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protected $weight; |
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/** |
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* Wildcard token. |
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* |
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* @var string |
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*/ |
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protected $wildcard; |
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/** |
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* Create new parser instance. |
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* |
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* @param int $weight |
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*/ |
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public function __construct($weight = 1, $wildcard = '*') |
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{ |
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$this->weight = $weight; |
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$this->wildcard = $wildcard; |
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} |
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/** |
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* Parse searchable columns. |
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* |
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* @param array|string $columns |
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* @return array |
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*/ |
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public function parseWeights($columns) |
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{ |
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if (is_string($columns)) { |
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$columns = func_get_args(); |
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} |
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return $this->addMissingWeights($columns); |
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} |
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/** |
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* Add search weight to the columns if missing. |
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* |
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* @param array $columns |
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*/ |
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protected function addMissingWeights(array $columns) |
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{ |
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$parsed = []; |
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foreach ($columns as $column => $weight) { |
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if (is_numeric($column)) { |
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list($column, $weight) = [$weight, $this->weight]; |
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} |
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$parsed[$column] = $weight; |
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} |
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return $parsed; |
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} |
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/** |
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* Strip wildcard tokens from the word. |
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* |
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* @param string $word |
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* @return string |
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*/ |
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public function stripWildcards($word) |
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{ |
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return str_replace($this->wildcard, '%', trim($word, $this->wildcard)); |
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} |
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/** |
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* Parse query string into separate words with wildcards if applicable. |
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* |
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* @param string $query |
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* @param bool $fulltext |
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* @return array |
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*/ |
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public function parseQuery($query, $fulltext = true) |
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{ |
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$words = $this->splitString($query); |
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if ($fulltext) { |
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$words = $this->addWildcards($words); |
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} |
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return $words; |
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} |
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/** |
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* Split query string into words/phrases to be searched. |
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* |
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* @param string $query |
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* @return array |
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*/ |
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protected function splitString($query) |
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{ |
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preg_match_all('/(?<=")[\w ][^"]+(?=")|(?<=\s|^)[^\s"]+(?=\s|$)/u', $query, $matches); |
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return reset($matches); |
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} |
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/** |
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* Add wildcard tokens to the words. |
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* |
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* @param array $words |
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*/ |
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protected function addWildcards(array $words) |
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{ |
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$token = $this->wildcard; |
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return array_map(function ($word) use ($token) { |
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return preg_replace('/\*+/', '*', "{$token}{$word}{$token}"); |
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}, $words); |
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} |
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} |
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jarektkaczyk /
eloquence-base
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