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<?php
/**
* Helper code for TranslatablePage.
*
* @file
* @author Niklas Laxström
* @copyright Copyright © 2009-2013 Niklas Laxström
* @license GPL-2.0+
*/
/**
* This class represents the results of parsed source page, that is, the
* extracted sections and a template.
*
* @ingroup PageTranslation
*/
class TPParse {
/// \type{Title} Title of the page.
protected $title;
/** \arrayof{String,TPSection} Parsed sections indexed with placeholder.
* @todo Encapsulate
*/
public $sections = array();
/** \string Page source with content replaced with placeholders.
* @todo Encapsulate
*/
public $template = null;
/**
* @var null|array Sections saved in the database. array( string => TPSection, ... )
*/
protected $dbSections = null;
/// Constructor
public function __construct( Title $title ) {
$this->title = $title;
}
/**
* Returns the number of sections in this page.
* @return \int
*/
public function countSections() {
return count( $this->sections );
}
/**
* Returns the page template where translatable content is replaced with
* placeholders.
* @return \string
*/
public function getTemplate() {
return $this->template;
}
/**
* Returns the page template where the ugly placeholders are replaced with
* section markers. Sections which previously had no number will get one
* assigned now.
* @return \string
*/
public function getTemplatePretty() {
$text = $this->template;
$sections = $this->getSectionsForSave();
foreach ( $sections as $ph => $s ) {
$text = str_replace( $ph, "<!--T:{$s->id}-->", $text );
}
return $text;
}
/**
* Gets the sections and assigns section id for new sections
* @param int $highest The largest used integer id (Since 2012-08-02)
* @return array array( string => TPSection, ... )
*/
public function getSectionsForSave( $highest = 0 ) {
$this->loadFromDatabase();
$sections = $this->sections;
foreach ( array_keys( $this->dbSections ) as $key ) {
$highest = max( $highest, (int)$key );
}
foreach ( $sections as $_ ) {
$highest = max( $highest, (int)$_->id );
}
foreach ( $sections as $s ) {
$s->type = 'old';
if ( $s->id === -1 ) {
$s->type = 'new';
$s->id = ++$highest;
} else {
if ( isset( $this->dbSections[$s->id] ) ) {
$storedText = $this->dbSections[$s->id]->text;
if ( $s->text !== $storedText ) {
$s->type = 'changed';
$s->oldText = $storedText;
}
}
}
}
return $sections;
}
/**
* Returns list of deleted sections.
* @return array List of sections indexed by id. array( string => TPsection, ... )
*/
public function getDeletedSections() {
$sections = $this->getSectionsForSave();
$deleted = $this->dbSections;
foreach ( $sections as $s ) {
if ( isset( $deleted[$s->id] ) ) {
unset( $deleted[$s->id] );
}
}
return $deleted;
}
/**
* Load section saved in the database. Populates dbSections.
*/
protected function loadFromDatabase() {
if ( $this->dbSections !== null ) {
return;
}
$this->dbSections = array();
$db = TranslateUtils::getSafeReadDB();
$tables = 'translate_sections';
$vars = array( 'trs_key', 'trs_text' );
$conds = array( 'trs_page' => $this->title->getArticleID() );
$res = $db->select( $tables, $vars, $conds, __METHOD__ );
foreach ( $res as $r ) {
$section = new TPSection;
$section->id = $r->trs_key;
$section->text = $r->trs_text;
$section->type = 'db';
$this->dbSections[$r->trs_key] = $section;
}
}
/**
* Returns the source page with translation section mark-up added.
*
* @return string Wikitext.
*/
public function getSourcePageText() {
$text = $this->template;
foreach ( $this->sections as $ph => $s ) {
$text = str_replace( $ph, $s->getMarkedText(), $text );
}
return $text;
}
/**
* Returns translation page with all possible translations replaced in
* and ugly translation tags removed.
*
* @param MessageCollection $collection Collection that holds translated messages.
* @return string Whole page as wikitext.
*/
public function getTranslationPageText( $collection ) {
$text = $this->template; // The source
// For finding the messages
$prefix = $this->title->getPrefixedDBkey() . '/';
if ( $collection instanceof MessageCollection ) {
$collection->loadTranslations( DB_MASTER );
$collection->filter( 'translated', false );
}
foreach ( $this->sections as $ph => $s ) {
$sectiontext = null;
if ( isset( $collection[$prefix . $s->id] ) ) {
/**
* @var TMessage $msg
*/
$msg = $collection[$prefix . $s->id];
$sectiontext = $msg->translation();
}
// Use the original text if no translation is available.
// For the source language, this will actually be the source, which
// contains variable declarations (tvar) instead of variables ($1).
// The getTextWithVariables will convert declarations to normal variables
// for us so that the variable substitutions below will also work
// for the source language.
if ( $sectiontext === null || $sectiontext === $s->getText() ) {
$sectiontext = $s->getTextWithVariables();
}
// Substitute variables into section text and substitute text into document
$sectiontext = strtr( $sectiontext, $s->getVariables() );
$text = str_replace( $ph, $sectiontext, $text );
}
$nph = array();
$text = TranslatablePage::armourNowiki( $nph, $text );
// Remove translation markup from the template to produce final text
$cb = array( __CLASS__, 'replaceTagCb' );
$text = preg_replace_callback( '~(<translate>)(.*)(</translate>)~sU', $cb, $text );
$text = TranslatablePage::unArmourNowiki( $nph, $text );
return $text;
}
/**
* Chops of trailing or preceeding whitespace intelligently to avoid
* build up of unintented whitespace.
* @param array $matches
* @return string
*/
protected static function replaceTagCb( $matches ) {
return preg_replace( '~^\n|\n\z~', '', $matches[2] );
}
}
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