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63 lines
1.3 KiB
63 lines
1.3 KiB
<?php |
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/** |
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* Contains Boolean search from the search form. |
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*/ |
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class FreshRSS_BooleanSearch { |
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private $raw_input = ''; |
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private $searches = array(); |
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public function __construct($input) { |
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$input = trim($input); |
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if ($input == '') { |
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return; |
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} |
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$this->raw_input = $input; |
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$input = preg_replace('/:"(.*?)"/', ':"\1"', $input); |
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$splits = preg_split('/\b(OR)\b/i', $input, -1, PREG_SPLIT_DELIM_CAPTURE); |
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$segment = ''; |
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$ns = count($splits); |
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for ($i = 0; $i < $ns; $i++) { |
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$segment = $segment . $splits[$i]; |
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if (trim($segment) == '' || strcasecmp($segment, 'OR') === 0) { |
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$segment = ''; |
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} else { |
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$quotes = substr_count($segment, '"') + substr_count($segment, '"'); |
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if ($quotes % 2 === 0) { |
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$segment = trim($segment); |
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if ($segment != '') { |
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$this->searches[] = new FreshRSS_Search($segment); |
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} |
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$segment = ''; |
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} |
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} |
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} |
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$segment = trim($segment); |
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if ($segment != '') { |
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$this->searches[] = new FreshRSS_Search($segment); |
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} |
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} |
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public function searches() { |
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return $this->searches; |
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} |
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public function add($search) { |
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if ($search instanceof FreshRSS_Search) { |
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$this->searches[] = $search; |
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return $search; |
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} |
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return null; |
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} |
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public function __toString() { |
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return $this->getRawInput(); |
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} |
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public function getRawInput() { |
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return $this->raw_input; |
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} |
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}
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