TPSection.php

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<?php
class TPSection {
    public $id;
    public $name;
    public $text;
    public $type;
    public $oldText;

    public function getText() {
        return $this->text;
    }

    public function getTextForTrans() {
        $re = '~<tvar\|([^>]+)>(.*?)</>~u';

        return preg_replace( $re, '\2', $this->text );
    }

    public function getMarkedText() {
        $id = isset( $this->name ) ? $this->name : $this->id;
        $header = "<!--T:{$id}-->";
        $re = '~^(=+.*?=+\s*?$)~m';
        $rep = "\\1 $header";
        $count = 0;

        $text = preg_replace( $re, $rep, $this->text, 1, $count );

        if ( $count === 0 ) {
            $text = $header . "\n" . $this->text;
        }

        return $text;
    }

    public function getOldText() {
        return isset( $this->oldText ) ? $this->oldText : $this->text;
    }

    public function getVariables() {
        $re = '~<tvar\|([^>]+)>(.*?)</>~u';
        $matches = array();
        preg_match_all( $re, $this->text, $matches, PREG_SET_ORDER );
        $vars = array();

        foreach ( $matches as $m ) {
            $vars['$' . $m[1]] = $m[2];
        }

        return $vars;
    }
}