Edit File by line

<?php

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/**

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* Class for working with PO files

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* @version $Id: po.php 1158 2015-11-20 04:31:23Z dd32 $

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* @package pomo

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* @subpackage po

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require_once __DIR__ . '/translations.php';

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if ( ! defined( 'PO_MAX_LINE_LEN' ) ) {

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define( 'PO_MAX_LINE_LEN', 79 );

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}

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* The `auto_detect_line_endings` setting has been deprecated in PHP 8.1,

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* but will continue to work until PHP 9.0.

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* For now, we're silencing the deprecation notice as there may still be

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* translation files around which haven't been updated in a long time and

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* which still use the old MacOS standalone `\r` as a line ending.

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* This fix should be revisited when PHP 9.0 is in alpha/beta.

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@ini_set( 'auto_detect_line_endings', 1 ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged

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/**

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* Routines for working with PO files

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if ( ! class_exists( 'PO', false ) ) :

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class PO extends Gettext_Translations {

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public $comments_before_headers = '';

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/**

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* Exports headers to a PO entry

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* @return string msgid/msgstr PO entry for this PO file headers, doesn't contain newline at the end

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public function export_headers() {

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$header_string = '';

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foreach ( $this->headers as $header => $value ) {

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$header_string .= "$header: $value\n";

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}

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$poified = PO::poify( $header_string );

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if ( $this->comments_before_headers ) {

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$before_headers = $this->prepend_each_line( rtrim( $this->comments_before_headers ) . "\n", '# ' );

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} else {

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$before_headers = '';

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}

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return rtrim( "{$before_headers}msgid \"\"\nmsgstr $poified" );

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}

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/**

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* Exports all entries to PO format

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* @return string sequence of msgid/msgstr PO strings, doesn't contain a newline at the end

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public function export_entries() {

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// TODO: Sorting.

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return implode( "\n\n", array_map( array( 'PO', 'export_entry' ), $this->entries ) );

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}

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/**

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* Exports the whole PO file as a string

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* @param bool $include_headers whether to include the headers in the export

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* @return string ready for inclusion in PO file string for headers and all the entries

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public function export( $include_headers = true ) {

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$res = '';

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if ( $include_headers ) {

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$res .= $this->export_headers();

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$res .= "\n\n";

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}

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$res .= $this->export_entries();

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return $res;

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}

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/**

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* Same as {@link export}, but writes the result to a file

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* @param string $filename Where to write the PO string.

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* @param bool $include_headers Whether to include the headers in the export.

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* @return bool true on success, false on error

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public function export_to_file( $filename, $include_headers = true ) {

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$fh = fopen( $filename, 'w' );

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if ( false === $fh ) {

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return false;

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}

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$export = $this->export( $include_headers );

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$res = fwrite( $fh, $export );

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if ( false === $res ) {

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return false;

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}

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return fclose( $fh );

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}

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/**

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* Text to include as a comment before the start of the PO contents

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* Doesn't need to include # in the beginning of lines, these are added automatically

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* @param string $text Text to include as a comment.

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public function set_comment_before_headers( $text ) {

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$this->comments_before_headers = $text;

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}

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/**

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* Formats a string in PO-style

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* @param string $input_string the string to format

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* @return string the poified string

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public static function poify( $input_string ) {

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$quote = '"';

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$slash = '\\';

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$newline = "\n";

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$replaces = array(

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"$slash" => "$slash$slash",

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"$quote" => "$slash$quote",

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"\t" => '\t',

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);

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$input_string = str_replace( array_keys( $replaces ), array_values( $replaces ), $input_string );

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$po = $quote . implode( "{$slash}n{$quote}{$newline}{$quote}", explode( $newline, $input_string ) ) . $quote;

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// Add empty string on first line for readability.

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if ( str_contains( $input_string, $newline ) &&

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( substr_count( $input_string, $newline ) > 1 || substr( $input_string, -strlen( $newline ) ) !== $newline ) ) {

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$po = "$quote$quote$newline$po";

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}

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// Remove empty strings.

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$po = str_replace( "$newline$quote$quote", '', $po );

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return $po;

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}

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/**

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* Gives back the original string from a PO-formatted string

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* @param string $input_string PO-formatted string

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* @return string unescaped string

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public static function unpoify( $input_string ) {

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$escapes = array(

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't' => "\t",

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'n' => "\n",

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'r' => "\r",

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'\\' => '\\',

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);

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$lines = array_map( 'trim', explode( "\n", $input_string ) );

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$lines = array_map( array( 'PO', 'trim_quotes' ), $lines );

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$unpoified = '';

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$previous_is_backslash = false;

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foreach ( $lines as $line ) {

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preg_match_all( '/./u', $line, $chars );

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$chars = $chars[0];

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foreach ( $chars as $char ) {

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if ( ! $previous_is_backslash ) {

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if ( '\\' === $char ) {

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$previous_is_backslash = true;

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} else {

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$unpoified .= $char;

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}

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} else {

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$previous_is_backslash = false;

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$unpoified .= isset( $escapes[ $char ] ) ? $escapes[ $char ] : $char;

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}

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}

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}

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// Standardize the line endings on imported content, technically PO files shouldn't contain \r.

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$unpoified = str_replace( array( "\r\n", "\r" ), "\n", $unpoified );

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return $unpoified;

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}

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/**

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* Inserts $with in the beginning of every new line of $input_string and

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* returns the modified string

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* @param string $input_string prepend lines in this string

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* @param string $with prepend lines with this string

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public static function prepend_each_line( $input_string, $with ) {

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$lines = explode( "\n", $input_string );

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$append = '';

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if ( "\n" === substr( $input_string, -1 ) && '' === end( $lines ) ) {

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* Last line might be empty because $input_string was terminated

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* with a newline, remove it from the $lines array,

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* we'll restore state by re-terminating the string at the end.

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array_pop( $lines );

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$append = "\n";

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}

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foreach ( $lines as &$line ) {

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$line = $with . $line;

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}

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unset( $line );

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return implode( "\n", $lines ) . $append;

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}

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/**

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* Prepare a text as a comment -- wraps the lines and prepends #

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* and a special character to each line

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* @access private

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* @param string $text the comment text

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* @param string $char character to denote a special PO comment,

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* like :, default is a space

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public static function comment_block( $text, $char = ' ' ) {

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$text = wordwrap( $text, PO_MAX_LINE_LEN - 3 );

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return PO::prepend_each_line( $text, "#$char " );

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}

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/**

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* Builds a string from the entry for inclusion in PO file

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* @param Translation_Entry $entry the entry to convert to po string.

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* @return string|false PO-style formatted string for the entry or

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* false if the entry is empty

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public static function export_entry( $entry ) {

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if ( null === $entry->singular || '' === $entry->singular ) {

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return false;

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}

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$po = array();

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if ( ! empty( $entry->translator_comments ) ) {

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$po[] = PO::comment_block( $entry->translator_comments );

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}

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if ( ! empty( $entry->extracted_comments ) ) {

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$po[] = PO::comment_block( $entry->extracted_comments, '.' );

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}

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if ( ! empty( $entry->references ) ) {

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$po[] = PO::comment_block( implode( ' ', $entry->references ), ':' );

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}

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if ( ! empty( $entry->flags ) ) {

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$po[] = PO::comment_block( implode( ', ', $entry->flags ), ',' );

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}

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if ( $entry->context ) {

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$po[] = 'msgctxt ' . PO::poify( $entry->context );

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}

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$po[] = 'msgid ' . PO::poify( $entry->singular );

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if ( ! $entry->is_plural ) {

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$translation = empty( $entry->translations ) ? '' : $entry->translations[0];

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$translation = PO::match_begin_and_end_newlines( $translation, $entry->singular );

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$po[] = 'msgstr ' . PO::poify( $translation );

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} else {

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$po[] = 'msgid_plural ' . PO::poify( $entry->plural );

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$translations = empty( $entry->translations ) ? array( '', '' ) : $entry->translations;

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foreach ( $translations as $i => $translation ) {

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$translation = PO::match_begin_and_end_newlines( $translation, $entry->plural );

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$po[] = "msgstr[$i] " . PO::poify( $translation );

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}

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}

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return implode( "\n", $po );

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}

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public static function match_begin_and_end_newlines( $translation, $original ) {

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if ( '' === $translation ) {

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return $translation;

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}

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$original_begin = "\n" === substr( $original, 0, 1 );

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$original_end = "\n" === substr( $original, -1 );

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$translation_begin = "\n" === substr( $translation, 0, 1 );

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$translation_end = "\n" === substr( $translation, -1 );

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if ( $original_begin ) {

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if ( ! $translation_begin ) {

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$translation = "\n" . $translation;

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}

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} elseif ( $translation_begin ) {

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$translation = ltrim( $translation, "\n" );

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}

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if ( $original_end ) {

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if ( ! $translation_end ) {

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$translation .= "\n";

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}

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} elseif ( $translation_end ) {

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$translation = rtrim( $translation, "\n" );

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}

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return $translation;

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}

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/**

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* @param string $filename

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* @return bool

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public function import_from_file( $filename ) {

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$f = fopen( $filename, 'r' );

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if ( ! $f ) {

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return false;

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}

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$lineno = 0;

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while ( true ) {

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$res = $this->read_entry( $f, $lineno );

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if ( ! $res ) {

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break;

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}

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if ( '' === $res['entry']->singular ) {

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$this->set_headers( $this->make_headers( $res['entry']->translations[0] ) );

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} else {

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$this->add_entry( $res['entry'] );

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}

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}

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PO::read_line( $f, 'clear' );

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if ( false === $res ) {

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return false;

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}

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if ( ! $this->headers && ! $this->entries ) {

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return false;

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}

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return true;

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}

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/**

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* Helper function for read_entry

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* @param string $context

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* @return bool

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protected static function is_final( $context ) {

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return ( 'msgstr' === $context ) || ( 'msgstr_plural' === $context );

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}

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/**

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* @param resource $f

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* @param int $lineno

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* @return null|false|array

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public function read_entry( $f, $lineno = 0 ) {

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$entry = new Translation_Entry();

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// Where were we in the last step.

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// Can be: comment, msgctxt, msgid, msgid_plural, msgstr, msgstr_plural.

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$context = '';

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$msgstr_index = 0;

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while ( true ) {

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++$lineno;

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$line = PO::read_line( $f );

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if ( ! $line ) {

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if ( feof( $f ) ) {

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if ( self::is_final( $context ) ) {

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break;

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} elseif ( ! $context ) { // We haven't read a line and EOF came.

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return null;

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} else {

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return false;

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}

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} else {

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return false;

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}

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}

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if ( "\n" === $line ) {

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continue;

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}

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$line = trim( $line );

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if ( preg_match( '/^#/', $line, $m ) ) {

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// The comment is the start of a new entry.

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if ( self::is_final( $context ) ) {

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PO::read_line( $f, 'put-back' );

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--$lineno;

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break;

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}

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// Comments have to be at the beginning.

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if ( $context && 'comment' !== $context ) {

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return false;

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}

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// Add comment.

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$this->add_comment_to_entry( $entry, $line );

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} elseif ( preg_match( '/^msgctxt\s+(".*")/', $line, $m ) ) {

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if ( self::is_final( $context ) ) {

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PO::read_line( $f, 'put-back' );

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--$lineno;

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break;

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}

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if ( $context && 'comment' !== $context ) {

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return false;

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}

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$context = 'msgctxt';

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$entry->context .= PO::unpoify( $m[1] );

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} elseif ( preg_match( '/^msgid\s+(".*")/', $line, $m ) ) {

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if ( self::is_final( $context ) ) {

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PO::read_line( $f, 'put-back' );

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--$lineno;

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break;

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}

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if ( $context && 'msgctxt' !== $context && 'comment' !== $context ) {

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return false;

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}

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$context = 'msgid';

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$entry->singular .= PO::unpoify( $m[1] );

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} elseif ( preg_match( '/^msgid_plural\s+(".*")/', $line, $m ) ) {

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if ( 'msgid' !== $context ) {

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return false;

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}

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$context = 'msgid_plural';

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$entry->is_plural = true;

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$entry->plural .= PO::unpoify( $m[1] );

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} elseif ( preg_match( '/^msgstr\s+(".*")/', $line, $m ) ) {

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if ( 'msgid' !== $context ) {

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return false;

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}

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$context = 'msgstr';

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$entry->translations = array( PO::unpoify( $m[1] ) );

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} elseif ( preg_match( '/^msgstr\[(\d+)\]\s+(".*")/', $line, $m ) ) {

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if ( 'msgid_plural' !== $context && 'msgstr_plural' !== $context ) {

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return false;

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}

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$context = 'msgstr_plural';

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$msgstr_index = $m[1];

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$entry->translations[ $m[1] ] = PO::unpoify( $m[2] );

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} elseif ( preg_match( '/^".*"$/', $line ) ) {

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$unpoified = PO::unpoify( $line );

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switch ( $context ) {

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case 'msgid':

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$entry->singular .= $unpoified;

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break;

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case 'msgctxt':

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$entry->context .= $unpoified;

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break;

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case 'msgid_plural':

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$entry->plural .= $unpoified;

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break;

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case 'msgstr':

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$entry->translations[0] .= $unpoified;

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break;

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case 'msgstr_plural':

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$entry->translations[ $msgstr_index ] .= $unpoified;

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break;

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default:

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return false;

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}

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} else {

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return false;

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}

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}

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$have_translations = false;

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foreach ( $entry->translations as $t ) {

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if ( $t || ( '0' === $t ) ) {

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$have_translations = true;

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break;

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}

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}

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if ( false === $have_translations ) {

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$entry->translations = array();

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}

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return array(

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'entry' => $entry,

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'lineno' => $lineno,

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);

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}

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[460] Fix | Delete

/**

[461] Fix | Delete

* @param resource $f

[462] Fix | Delete

* @param string $action

[463] Fix | Delete

* @return bool

[464] Fix | Delete

[465] Fix | Delete

public function read_line( $f, $action = 'read' ) {

[466] Fix | Delete

static $last_line = '';

[467] Fix | Delete

static $use_last_line = false;

[468] Fix | Delete

if ( 'clear' === $action ) {

[469] Fix | Delete

$last_line = '';

[470] Fix | Delete

return true;

[471] Fix | Delete

}

[472] Fix | Delete

if ( 'put-back' === $action ) {

[473] Fix | Delete

$use_last_line = true;

[474] Fix | Delete

return true;

[475] Fix | Delete

}

[476] Fix | Delete

$line = $use_last_line ? $last_line : fgets( $f );

[477] Fix | Delete

$line = ( "\r\n" === substr( $line, -2 ) ) ? rtrim( $line, "\r\n" ) . "\n" : $line;

[478] Fix | Delete

$last_line = $line;

[479] Fix | Delete

$use_last_line = false;

[480] Fix | Delete

return $line;

[481] Fix | Delete

}

[482] Fix | Delete

[483] Fix | Delete

/**

[484] Fix | Delete

* @param Translation_Entry $entry

[485] Fix | Delete

* @param string $po_comment_line

[486] Fix | Delete

[487] Fix | Delete

public function add_comment_to_entry( &$entry, $po_comment_line ) {

[488] Fix | Delete

$first_two = substr( $po_comment_line, 0, 2 );

[489] Fix | Delete

$comment = trim( substr( $po_comment_line, 2 ) );

[490] Fix | Delete

if ( '#:' === $first_two ) {

[491] Fix | Delete

$entry->references = array_merge( $entry->references, preg_split( '/\s+/', $comment ) );

[492] Fix | Delete

} elseif ( '#.' === $first_two ) {

[493] Fix | Delete

$entry->extracted_comments = trim( $entry->extracted_comments . "\n" . $comment );

[494] Fix | Delete

} elseif ( '#,' === $first_two ) {

[495] Fix | Delete

$entry->flags = array_merge( $entry->flags, preg_split( '/,\s*/', $comment ) );

[496] Fix | Delete

} else {

[497] Fix | Delete

$entry->translator_comments = trim( $entry->translator_comments . "\n" . $comment );

[498] Fix | Delete

}

[499] Fix | Delete