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Edit File : po.php \| Size : 14.39 KB
<?php /** * Class for working with PO files * * @version $Id: po.php 1158 2015-11-20 04:31:23Z dd32 $ * @package pomo * @subpackage po / require_once dirname( __FILE__ ) . '/translations.php'; if ( ! defined( 'PO_MAX_LINE_LEN' ) ) { define( 'PO_MAX_LINE_LEN', 79 ); } ini_set( 'auto_detect_line_endings', 1 ); /* * Routines for working with PO files / if ( ! class_exists( 'PO', false ) ) : class PO extends Gettext_Translations { var $comments_before_headers = ''; /* * Exports headers to a PO entry * * @return string msgid/msgstr PO entry for this PO file headers, doesn't contain newline at the end / function export_headers() { $header_string = ''; foreach ( $this->headers as $header => $value ) { $header_string .= "$header: $value\n"; } $poified = PO::poify( $header_string ); if ( $this->comments_before_headers ) { $before_headers = $this->prepend_each_line( rtrim( $this->comments_before_headers ) . "\n", '# ' ); } else { $before_headers = ''; } return rtrim( "{$before_headers}msgid \"\"\nmsgstr $poified" ); } /* * Exports all entries to PO format * * @return string sequence of mgsgid/msgstr PO strings, doesn't containt newline at the end / function export_entries() { //TODO sorting return implode( "\n\n", array_map( array( 'PO', 'export_entry' ), $this->entries ) ); } /* * Exports the whole PO file as a string * * @param bool $include_headers whether to include the headers in the export * @return string ready for inclusion in PO file string for headers and all the enrtries / function export( $include_headers = true ) { $res = ''; if ( $include_headers ) { $res .= $this->export_headers(); $res .= "\n\n"; } $res .= $this->export_entries(); return $res; } /* * Same as {@link export}, but writes the result to a file * * @param string $filename where to write the PO string * @param bool $include_headers whether to include tje headers in the export * @return bool true on success, false on error / function export_to_file( $filename, $include_headers = true ) { $fh = fopen( $filename, 'w' ); if ( false === $fh ) { return false; } $export = $this->export( $include_headers ); $res = fwrite( $fh, $export ); if ( false === $res ) { return false; } return fclose( $fh ); } /* * Text to include as a comment before the start of the PO contents * * Doesn't need to include # in the beginning of lines, these are added automatically / function set_comment_before_headers( $text ) { $this->comments_before_headers = $text; } /* * Formats a string in PO-style * * @param string $string the string to format * @return string the poified string / public static function poify( $string ) { $quote = '"'; $slash = '\\'; $newline = "\n"; $replaces = array( "$slash" => "$slash$slash", "$quote" => "$slash$quote", "\t" => '\t', ); $string = str_replace( array_keys( $replaces ), array_values( $replaces ), $string ); $po = $quote . implode( "${slash}n$quote$newline$quote", explode( $newline, $string ) ) . $quote; // add empty string on first line for readbility if ( false !== strpos( $string, $newline ) && ( substr_count( $string, $newline ) > 1 \|\| ! ( $newline === substr( $string, -strlen( $newline ) ) ) ) ) { $po = "$quote$quote$newline$po"; } // remove empty strings $po = str_replace( "$newline$quote$quote", '', $po ); return $po; } /* * Gives back the original string from a PO-formatted string * * @param string $string PO-formatted string * @return string enascaped string / public static function unpoify( $string ) { $escapes = array( 't' => "\t", 'n' => "\n", 'r' => "\r", '\\' => '\\', ); $lines = array_map( 'trim', explode( "\n", $string ) ); $lines = array_map( array( 'PO', 'trim_quotes' ), $lines ); $unpoified = ''; $previous_is_backslash = false; foreach ( $lines as $line ) { preg_match_all( '/./u', $line, $chars ); $chars = $chars[0]; foreach ( $chars as $char ) { if ( ! $previous_is_backslash ) { if ( '\\' == $char ) { $previous_is_backslash = true; } else { $unpoified .= $char; } } else { $previous_is_backslash = false; $unpoified .= isset( $escapes[ $char ] ) ? $escapes[ $char ] : $char; } } } // Standardise the line endings on imported content, technically PO files shouldn't contain \r $unpoified = str_replace( array( "\r\n", "\r" ), "\n", $unpoified ); return $unpoified; } /* * Inserts $with in the beginning of every new line of $string and * returns the modified string * * @param string $string prepend lines in this string * @param string $with prepend lines with this string / public static function prepend_each_line( $string, $with ) { $lines = explode( "\n", $string ); $append = ''; if ( "\n" === substr( $string, -1 ) && '' === end( $lines ) ) { // Last line might be empty because $string was terminated // with a newline, remove it from the $lines array, // we'll restore state by re-terminating the string at the end array_pop( $lines ); $append = "\n"; } foreach ( $lines as &$line ) { $line = $with . $line; } unset( $line ); return implode( "\n", $lines ) . $append; } /* * Prepare a text as a comment -- wraps the lines and prepends # * and a special character to each line * * @access private * @param string $text the comment text * @param string $char character to denote a special PO comment, * like :, default is a space / public static function comment_block( $text, $char = ' ' ) { $text = wordwrap( $text, PO_MAX_LINE_LEN - 3 ); return PO::prepend_each_line( $text, "#$char " ); } /* * Builds a string from the entry for inclusion in PO file * * @param Translation_Entry $entry the entry to convert to po string (passed by reference). * @return false\|string PO-style formatted string for the entry or * false if the entry is empty / public static function export_entry( &$entry ) { if ( null === $entry->singular \|\| '' === $entry->singular ) { return false; } $po = array(); if ( ! empty( $entry->translator_comments ) ) { $po[] = PO::comment_block( $entry->translator_comments ); } if ( ! empty( $entry->extracted_comments ) ) { $po[] = PO::comment_block( $entry->extracted_comments, '.' ); } if ( ! empty( $entry->references ) ) { $po[] = PO::comment_block( implode( ' ', $entry->references ), ':' ); } if ( ! empty( $entry->flags ) ) { $po[] = PO::comment_block( implode( ', ', $entry->flags ), ',' ); } if ( $entry->context ) { $po[] = 'msgctxt ' . PO::poify( $entry->context ); } $po[] = 'msgid ' . PO::poify( $entry->singular ); if ( ! $entry->is_plural ) { $translation = empty( $entry->translations ) ? '' : $entry->translations[0]; $translation = PO::match_begin_and_end_newlines( $translation, $entry->singular ); $po[] = 'msgstr ' . PO::poify( $translation ); } else { $po[] = 'msgid_plural ' . PO::poify( $entry->plural ); $translations = empty( $entry->translations ) ? array( '', '' ) : $entry->translations; foreach ( $translations as $i => $translation ) { $translation = PO::match_begin_and_end_newlines( $translation, $entry->plural ); $po[] = "msgstr[$i] " . PO::poify( $translation ); } } return implode( "\n", $po ); } public static function match_begin_and_end_newlines( $translation, $original ) { if ( '' === $translation ) { return $translation; } $original_begin = "\n" === substr( $original, 0, 1 ); $original_end = "\n" === substr( $original, -1 ); $translation_begin = "\n" === substr( $translation, 0, 1 ); $translation_end = "\n" === substr( $translation, -1 ); if ( $original_begin ) { if ( ! $translation_begin ) { $translation = "\n" . $translation; } } elseif ( $translation_begin ) { $translation = ltrim( $translation, "\n" ); } if ( $original_end ) { if ( ! $translation_end ) { $translation .= "\n"; } } elseif ( $translation_end ) { $translation = rtrim( $translation, "\n" ); } return $translation; } /* * @param string $filename * @return boolean / function import_from_file( $filename ) { $f = fopen( $filename, 'r' ); if ( ! $f ) { return false; } $lineno = 0; while ( true ) { $res = $this->read_entry( $f, $lineno ); if ( ! $res ) { break; } if ( $res['entry']->singular == '' ) { $this->set_headers( $this->make_headers( $res['entry']->translations[0] ) ); } else { $this->add_entry( $res['entry'] ); } } PO::read_line( $f, 'clear' ); if ( false === $res ) { return false; } if ( ! $this->headers && ! $this->entries ) { return false; } return true; } /* * Helper function for read_entry * * @param string $context * @return bool / protected static function is_final( $context ) { return ( $context === 'msgstr' ) \|\| ( $context === 'msgstr_plural' ); } /* * @param resource $f * @param int $lineno * @return null\|false\|array / function read_entry( $f, $lineno = 0 ) { $entry = new Translation_Entry(); // where were we in the last step // can be: comment, msgctxt, msgid, msgid_plural, msgstr, msgstr_plural $context = ''; $msgstr_index = 0; while ( true ) { $lineno++; $line = PO::read_line( $f ); if ( ! $line ) { if ( feof( $f ) ) { if ( self::is_final( $context ) ) { break; } elseif ( ! $context ) { // we haven't read a line and eof came return null; } else { return false; } } else { return false; } } if ( $line == "\n" ) { continue; } $line = trim( $line ); if ( preg_match( '/^#/', $line, $m ) ) { // the comment is the start of a new entry if ( self::is_final( $context ) ) { PO::read_line( $f, 'put-back' ); $lineno--; break; } // comments have to be at the beginning if ( $context && $context != 'comment' ) { return false; } // add comment $this->add_comment_to_entry( $entry, $line ); } elseif ( preg_match( '/^msgctxt\s+(".")/', $line, $m ) ) { if ( self::is_final( $context ) ) { PO::read_line( $f, 'put-back' ); $lineno--; break; } if ( $context && $context != 'comment' ) { return false; } $context = 'msgctxt'; $entry->context .= PO::unpoify( $m[1] ); } elseif ( preg_match( '/^msgid\s+(".")/', $line, $m ) ) { if ( self::is_final( $context ) ) { PO::read_line( $f, 'put-back' ); $lineno--; break; } if ( $context && $context != 'msgctxt' && $context != 'comment' ) { return false; } $context = 'msgid'; $entry->singular .= PO::unpoify( $m[1] ); } elseif ( preg_match( '/^msgid_plural\s+(".")/', $line, $m ) ) { if ( $context != 'msgid' ) { return false; } $context = 'msgid_plural'; $entry->is_plural = true; $entry->plural .= PO::unpoify( $m[1] ); } elseif ( preg_match( '/^msgstr\s+(".")/', $line, $m ) ) { if ( $context != 'msgid' ) { return false; } $context = 'msgstr'; $entry->translations = array( PO::unpoify( $m[1] ) ); } elseif ( preg_match( '/^msgstr\[(\d+)\]\s+(".")/', $line, $m ) ) { if ( $context != 'msgid_plural' && $context != 'msgstr_plural' ) { return false; } $context = 'msgstr_plural'; $msgstr_index = $m[1]; $entry->translations[ $m[1] ] = PO::unpoify( $m[2] ); } elseif ( preg_match( '/^"."$/', $line ) ) { $unpoified = PO::unpoify( $line ); switch ( $context ) { case 'msgid': $entry->singular .= $unpoified; break; case 'msgctxt': $entry->context .= $unpoified; break; case 'msgid_plural': $entry->plural .= $unpoified; break; case 'msgstr': $entry->translations[0] .= $unpoified; break; case 'msgstr_plural': $entry->translations[ $msgstr_index ] .= $unpoified; break; default: return false; } } else { return false; } } $have_translations = false; foreach ( $entry->translations as $t ) { if ( $t \|\| ( '0' === $t ) ) { $have_translations = true; break; } } if ( false === $have_translations ) { $entry->translations = array(); } return array( 'entry' => $entry, 'lineno' => $lineno, ); } /* * @staticvar string $last_line * @staticvar boolean $use_last_line * * @param resource $f * @param string $action * @return boolean / function read_line( $f, $action = 'read' ) { static $last_line = ''; static $use_last_line = false; if ( 'clear' == $action ) { $last_line = ''; return true; } if ( 'put-back' == $action ) { $use_last_line = true; return true; } $line = $use_last_line ? $last_line : fgets( $f ); $line = ( "\r\n" == substr( $line, -2 ) ) ? rtrim( $line, "\r\n" ) . "\n" : $line; $last_line = $line; $use_last_line = false; return $line; } /* * @param Translation_Entry $entry * @param string $po_comment_line / function add_comment_to_entry( &$entry, $po_comment_line ) { $first_two = substr( $po_comment_line, 0, 2 ); $comment = trim( substr( $po_comment_line, 2 ) ); if ( '#:' == $first_two ) { $entry->references = array_merge( $entry->references, preg_split( '/\s+/', $comment ) ); } elseif ( '#.' == $first_two ) { $entry->extracted_comments = trim( $entry->extracted_comments . "\n" . $comment ); } elseif ( '#,' == $first_two ) { $entry->flags = array_merge( $entry->flags, preg_split( '/,\s/', $comment ) ); } else { $entry->translator_comments = trim( $entry->translator_comments . "\n" . $comment ); } } /** * @param string $s * @return sring */ public static function trim_quotes( $s ) { if ( substr( $s, 0, 1 ) == '"' ) { $s = substr( $s, 1 ); } if ( substr( $s, -1, 1 ) == '"' ) { $s = substr( $s, 0, -1 ); } return $s; } } endif; Back

Edit File : po.php | Size : 14.39 KB

<?php
/**
 * Class for working with PO files
 *
 * @version $Id: po.php 1158 2015-11-20 04:31:23Z dd32 $
 * @package pomo
 * @subpackage po
 */

require_once dirname( __FILE__ ) . '/translations.php';

if ( ! defined( 'PO_MAX_LINE_LEN' ) ) {
	define( 'PO_MAX_LINE_LEN', 79 );
}

ini_set( 'auto_detect_line_endings', 1 );

/**
 * Routines for working with PO files
 */
if ( ! class_exists( 'PO', false ) ) :
	class PO extends Gettext_Translations {

var $comments_before_headers = '';

/**
		 * Exports headers to a PO entry
		 *
		 * @return string msgid/msgstr PO entry for this PO file headers, doesn't contain newline at the end
		 */
		function export_headers() {
			$header_string = '';
			foreach ( $this->headers as $header => $value ) {
				$header_string .= "$header: $value\n";
			}
			$poified = PO::poify( $header_string );
			if ( $this->comments_before_headers ) {
				$before_headers = $this->prepend_each_line( rtrim( $this->comments_before_headers ) . "\n", '# ' );
			} else {
				$before_headers = '';
			}
			return rtrim( "{$before_headers}msgid \"\"\nmsgstr $poified" );
		}

/**
		 * Exports all entries to PO format
		 *
		 * @return string sequence of mgsgid/msgstr PO strings, doesn't containt newline at the end
		 */
		function export_entries() {
			//TODO sorting
			return implode( "\n\n", array_map( array( 'PO', 'export_entry' ), $this->entries ) );
		}

/**
		 * Exports the whole PO file as a string
		 *
		 * @param bool $include_headers whether to include the headers in the export
		 * @return string ready for inclusion in PO file string for headers and all the enrtries
		 */
		function export( $include_headers = true ) {
			$res = '';
			if ( $include_headers ) {
				$res .= $this->export_headers();
				$res .= "\n\n";
			}
			$res .= $this->export_entries();
			return $res;
		}

/**
		 * Same as {@link export}, but writes the result to a file
		 *
		 * @param string $filename where to write the PO string
		 * @param bool $include_headers whether to include tje headers in the export
		 * @return bool true on success, false on error
		 */
		function export_to_file( $filename, $include_headers = true ) {
			$fh = fopen( $filename, 'w' );
			if ( false === $fh ) {
				return false;
			}
			$export = $this->export( $include_headers );
			$res    = fwrite( $fh, $export );
			if ( false === $res ) {
				return false;
			}
			return fclose( $fh );
		}

/**
		 * Text to include as a comment before the start of the PO contents
		 *
		 * Doesn't need to include # in the beginning of lines, these are added automatically
		 */
		function set_comment_before_headers( $text ) {
			$this->comments_before_headers = $text;
		}

/**
		 * Formats a string in PO-style
		 *
		 * @param string $string the string to format
		 * @return string the poified string
		 */
		public static function poify( $string ) {
			$quote   = '"';
			$slash   = '\\';
			$newline = "\n";

$replaces = array(
				"$slash" => "$slash$slash",
				"$quote" => "$slash$quote",
				"\t"     => '\t',
			);

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

$po = $quote . implode( "${slash}n$quote$newline$quote", explode( $newline, $string ) ) . $quote;
			// add empty string on first line for readbility
			if ( false !== strpos( $string, $newline ) &&
				( substr_count( $string, $newline ) > 1 || ! ( $newline === substr( $string, -strlen( $newline ) ) ) ) ) {
				$po = "$quote$quote$newline$po";
			}
			// remove empty strings
			$po = str_replace( "$newline$quote$quote", '', $po );
			return $po;
		}

/**
		 * Gives back the original string from a PO-formatted string
		 *
		 * @param string $string PO-formatted string
		 * @return string enascaped string
		 */
		public static function unpoify( $string ) {
			$escapes               = array(
				't'  => "\t",
				'n'  => "\n",
				'r'  => "\r",
				'\\' => '\\',
			);
			$lines                 = array_map( 'trim', explode( "\n", $string ) );
			$lines                 = array_map( array( 'PO', 'trim_quotes' ), $lines );
			$unpoified             = '';
			$previous_is_backslash = false;
			foreach ( $lines as $line ) {
				preg_match_all( '/./u', $line, $chars );
				$chars = $chars[0];
				foreach ( $chars as $char ) {
					if ( ! $previous_is_backslash ) {
						if ( '\\' == $char ) {
							$previous_is_backslash = true;
						} else {
							$unpoified .= $char;
						}
					} else {
						$previous_is_backslash = false;
						$unpoified            .= isset( $escapes[ $char ] ) ? $escapes[ $char ] : $char;
					}
				}
			}

// Standardise the line endings on imported content, technically PO files shouldn't contain \r
			$unpoified = str_replace( array( "\r\n", "\r" ), "\n", $unpoified );

return $unpoified;
		}

/**
		 * Inserts $with in the beginning of every new line of $string and
		 * returns the modified string
		 *
		 * @param string $string prepend lines in this string
		 * @param string $with prepend lines with this string
		 */
		public static function prepend_each_line( $string, $with ) {
			$lines  = explode( "\n", $string );
			$append = '';
			if ( "\n" === substr( $string, -1 ) && '' === end( $lines ) ) {
				// Last line might be empty because $string was terminated
				// with a newline, remove it from the $lines array,
				// we'll restore state by re-terminating the string at the end
				array_pop( $lines );
				$append = "\n";
			}
			foreach ( $lines as &$line ) {
				$line = $with . $line;
			}
			unset( $line );
			return implode( "\n", $lines ) . $append;
		}

/**
		 * Prepare a text as a comment -- wraps the lines and prepends #
		 * and a special character to each line
		 *
		 * @access private
		 * @param string $text the comment text
		 * @param string $char character to denote a special PO comment,
		 *  like :, default is a space
		 */
		public static function comment_block( $text, $char = ' ' ) {
			$text = wordwrap( $text, PO_MAX_LINE_LEN - 3 );
			return PO::prepend_each_line( $text, "#$char " );
		}

/**
		 * Builds a string from the entry for inclusion in PO file
		 *
		 * @param Translation_Entry $entry the entry to convert to po string (passed by reference).
		 * @return false|string PO-style formatted string for the entry or
		 *  false if the entry is empty
		 */
		public static function export_entry( &$entry ) {
			if ( null === $entry->singular || '' === $entry->singular ) {
				return false;
			}
			$po = array();
			if ( ! empty( $entry->translator_comments ) ) {
				$po[] = PO::comment_block( $entry->translator_comments );
			}
			if ( ! empty( $entry->extracted_comments ) ) {
				$po[] = PO::comment_block( $entry->extracted_comments, '.' );
			}
			if ( ! empty( $entry->references ) ) {
				$po[] = PO::comment_block( implode( ' ', $entry->references ), ':' );
			}
			if ( ! empty( $entry->flags ) ) {
				$po[] = PO::comment_block( implode( ', ', $entry->flags ), ',' );
			}
			if ( $entry->context ) {
				$po[] = 'msgctxt ' . PO::poify( $entry->context );
			}
			$po[] = 'msgid ' . PO::poify( $entry->singular );
			if ( ! $entry->is_plural ) {
				$translation = empty( $entry->translations ) ? '' : $entry->translations[0];
				$translation = PO::match_begin_and_end_newlines( $translation, $entry->singular );
				$po[]        = 'msgstr ' . PO::poify( $translation );
			} else {
				$po[]         = 'msgid_plural ' . PO::poify( $entry->plural );
				$translations = empty( $entry->translations ) ? array( '', '' ) : $entry->translations;
				foreach ( $translations as $i => $translation ) {
					$translation = PO::match_begin_and_end_newlines( $translation, $entry->plural );
					$po[]        = "msgstr[$i] " . PO::poify( $translation );
				}
			}
			return implode( "\n", $po );
		}

public static function match_begin_and_end_newlines( $translation, $original ) {
			if ( '' === $translation ) {
				return $translation;
			}

$original_begin    = "\n" === substr( $original, 0, 1 );
			$original_end      = "\n" === substr( $original, -1 );
			$translation_begin = "\n" === substr( $translation, 0, 1 );
			$translation_end   = "\n" === substr( $translation, -1 );

if ( $original_begin ) {
				if ( ! $translation_begin ) {
					$translation = "\n" . $translation;
				}
			} elseif ( $translation_begin ) {
				$translation = ltrim( $translation, "\n" );
			}

if ( $original_end ) {
				if ( ! $translation_end ) {
					$translation .= "\n";
				}
			} elseif ( $translation_end ) {
				$translation = rtrim( $translation, "\n" );
			}

return $translation;
		}

/**
		 * @param string $filename
		 * @return boolean
		 */
		function import_from_file( $filename ) {
			$f = fopen( $filename, 'r' );
			if ( ! $f ) {
				return false;
			}
			$lineno = 0;
			while ( true ) {
				$res = $this->read_entry( $f, $lineno );
				if ( ! $res ) {
					break;
				}
				if ( $res['entry']->singular == '' ) {
					$this->set_headers( $this->make_headers( $res['entry']->translations[0] ) );
				} else {
					$this->add_entry( $res['entry'] );
				}
			}
			PO::read_line( $f, 'clear' );
			if ( false === $res ) {
				return false;
			}
			if ( ! $this->headers && ! $this->entries ) {
				return false;
			}
			return true;
		}

/**
		 * Helper function for read_entry
		 *
		 * @param string $context
		 * @return bool
		 */
		protected static function is_final( $context ) {
			return ( $context === 'msgstr' ) || ( $context === 'msgstr_plural' );
		}

/**
		 * @param resource $f
		 * @param int      $lineno
		 * @return null|false|array
		 */
		function read_entry( $f, $lineno = 0 ) {
			$entry = new Translation_Entry();
			// where were we in the last step
			// can be: comment, msgctxt, msgid, msgid_plural, msgstr, msgstr_plural
			$context      = '';
			$msgstr_index = 0;
			while ( true ) {
				$lineno++;
				$line = PO::read_line( $f );
				if ( ! $line ) {
					if ( feof( $f ) ) {
						if ( self::is_final( $context ) ) {
							break;
						} elseif ( ! $context ) { // we haven't read a line and eof came
							return null;
						} else {
							return false;
						}
					} else {
						return false;
					}
				}
				if ( $line == "\n" ) {
					continue;
				}
				$line = trim( $line );
				if ( preg_match( '/^#/', $line, $m ) ) {
					// the comment is the start of a new entry
					if ( self::is_final( $context ) ) {
						PO::read_line( $f, 'put-back' );
						$lineno--;
						break;
					}
					// comments have to be at the beginning
					if ( $context && $context != 'comment' ) {
						return false;
					}
					// add comment
					$this->add_comment_to_entry( $entry, $line );
				} elseif ( preg_match( '/^msgctxt\s+(".*")/', $line, $m ) ) {
					if ( self::is_final( $context ) ) {
						PO::read_line( $f, 'put-back' );
						$lineno--;
						break;
					}
					if ( $context && $context != 'comment' ) {
						return false;
					}
					$context         = 'msgctxt';
					$entry->context .= PO::unpoify( $m[1] );
				} elseif ( preg_match( '/^msgid\s+(".*")/', $line, $m ) ) {
					if ( self::is_final( $context ) ) {
						PO::read_line( $f, 'put-back' );
						$lineno--;
						break;
					}
					if ( $context && $context != 'msgctxt' && $context != 'comment' ) {
						return false;
					}
					$context          = 'msgid';
					$entry->singular .= PO::unpoify( $m[1] );
				} elseif ( preg_match( '/^msgid_plural\s+(".*")/', $line, $m ) ) {
					if ( $context != 'msgid' ) {
						return false;
					}
					$context          = 'msgid_plural';
					$entry->is_plural = true;
					$entry->plural   .= PO::unpoify( $m[1] );
				} elseif ( preg_match( '/^msgstr\s+(".*")/', $line, $m ) ) {
					if ( $context != 'msgid' ) {
						return false;
					}
					$context             = 'msgstr';
					$entry->translations = array( PO::unpoify( $m[1] ) );
				} elseif ( preg_match( '/^msgstr\[(\d+)\]\s+(".*")/', $line, $m ) ) {
					if ( $context != 'msgid_plural' && $context != 'msgstr_plural' ) {
						return false;
					}
					$context                      = 'msgstr_plural';
					$msgstr_index                 = $m[1];
					$entry->translations[ $m[1] ] = PO::unpoify( $m[2] );
				} elseif ( preg_match( '/^".*"$/', $line ) ) {
					$unpoified = PO::unpoify( $line );
					switch ( $context ) {
						case 'msgid':
							$entry->singular .= $unpoified;
							break;
						case 'msgctxt':
							$entry->context .= $unpoified;
							break;
						case 'msgid_plural':
							$entry->plural .= $unpoified;
							break;
						case 'msgstr':
							$entry->translations[0] .= $unpoified;
							break;
						case 'msgstr_plural':
							$entry->translations[ $msgstr_index ] .= $unpoified;
							break;
						default:
							return false;
					}
				} else {
					return false;
				}
			}

$have_translations = false;
			foreach ( $entry->translations as $t ) {
				if ( $t || ( '0' === $t ) ) {
					$have_translations = true;
					break;
				}
			}
			if ( false === $have_translations ) {
				$entry->translations = array();
			}

return array(
				'entry'  => $entry,
				'lineno' => $lineno,
			);
		}

/**
		 * @staticvar string   $last_line
		 * @staticvar boolean  $use_last_line
		 *
		 * @param     resource $f
		 * @param     string   $action
		 * @return boolean
		 */
		function read_line( $f, $action = 'read' ) {
			static $last_line     = '';
			static $use_last_line = false;
			if ( 'clear' == $action ) {
				$last_line = '';
				return true;
			}
			if ( 'put-back' == $action ) {
				$use_last_line = true;
				return true;
			}
			$line          = $use_last_line ? $last_line : fgets( $f );
			$line          = ( "\r\n" == substr( $line, -2 ) ) ? rtrim( $line, "\r\n" ) . "\n" : $line;
			$last_line     = $line;
			$use_last_line = false;
			return $line;
		}

/**
		 * @param Translation_Entry $entry
		 * @param string            $po_comment_line
		 */
		function add_comment_to_entry( &$entry, $po_comment_line ) {
			$first_two = substr( $po_comment_line, 0, 2 );
			$comment   = trim( substr( $po_comment_line, 2 ) );
			if ( '#:' == $first_two ) {
				$entry->references = array_merge( $entry->references, preg_split( '/\s+/', $comment ) );
			} elseif ( '#.' == $first_two ) {
				$entry->extracted_comments = trim( $entry->extracted_comments . "\n" . $comment );
			} elseif ( '#,' == $first_two ) {
				$entry->flags = array_merge( $entry->flags, preg_split( '/,\s*/', $comment ) );
			} else {
				$entry->translator_comments = trim( $entry->translator_comments . "\n" . $comment );
			}
		}

/**
		 * @param string $s
		 * @return sring
		 */
		public static function trim_quotes( $s ) {
			if ( substr( $s, 0, 1 ) == '"' ) {
				$s = substr( $s, 1 );
			}
			if ( substr( $s, -1, 1 ) == '"' ) {
				$s = substr( $s, 0, -1 );
			}
			return $s;
		}
	}
endif;

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