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-rw-r--r--wp-includes/pomo/mo.php354
1 files changed, 354 insertions, 0 deletions
diff --git a/wp-includes/pomo/mo.php b/wp-includes/pomo/mo.php
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+<?php
+/**
+ * Class for working with MO files
+ *
+ * @version $Id: mo.php 1157 2015-11-20 04:30:11Z dd32 $
+ * @package pomo
+ * @subpackage mo
+ */
+
+require_once __DIR__ . '/translations.php';
+require_once __DIR__ . '/streams.php';
+
+if ( ! class_exists( 'MO', false ) ) :
+ class MO extends Gettext_Translations {
+
+ /**
+ * Number of plural forms.
+ *
+ * @var int
+ */
+ public $_nplurals = 2;
+
+ /**
+ * Loaded MO file.
+ *
+ * @var string
+ */
+ private $filename = '';
+
+ /**
+ * Returns the loaded MO file.
+ *
+ * @return string The loaded MO file.
+ */
+ public function get_filename() {
+ return $this->filename;
+ }
+
+ /**
+ * Fills up with the entries from MO file $filename
+ *
+ * @param string $filename MO file to load
+ * @return bool True if the import from file was successful, otherwise false.
+ */
+ public function import_from_file( $filename ) {
+ $reader = new POMO_FileReader( $filename );
+
+ if ( ! $reader->is_resource() ) {
+ return false;
+ }
+
+ $this->filename = (string) $filename;
+
+ return $this->import_from_reader( $reader );
+ }
+
+ /**
+ * @param string $filename
+ * @return bool
+ */
+ public function export_to_file( $filename ) {
+ $fh = fopen( $filename, 'wb' );
+ if ( ! $fh ) {
+ return false;
+ }
+ $res = $this->export_to_file_handle( $fh );
+ fclose( $fh );
+ return $res;
+ }
+
+ /**
+ * @return string|false
+ */
+ public function export() {
+ $tmp_fh = fopen( 'php://temp', 'r+' );
+ if ( ! $tmp_fh ) {
+ return false;
+ }
+ $this->export_to_file_handle( $tmp_fh );
+ rewind( $tmp_fh );
+ return stream_get_contents( $tmp_fh );
+ }
+
+ /**
+ * @param Translation_Entry $entry
+ * @return bool
+ */
+ public function is_entry_good_for_export( $entry ) {
+ if ( empty( $entry->translations ) ) {
+ return false;
+ }
+
+ if ( ! array_filter( $entry->translations ) ) {
+ return false;
+ }
+
+ return true;
+ }
+
+ /**
+ * @param resource $fh
+ * @return true
+ */
+ public function export_to_file_handle( $fh ) {
+ $entries = array_filter( $this->entries, array( $this, 'is_entry_good_for_export' ) );
+ ksort( $entries );
+ $magic = 0x950412de;
+ $revision = 0;
+ $total = count( $entries ) + 1; // All the headers are one entry.
+ $originals_lengths_addr = 28;
+ $translations_lengths_addr = $originals_lengths_addr + 8 * $total;
+ $size_of_hash = 0;
+ $hash_addr = $translations_lengths_addr + 8 * $total;
+ $current_addr = $hash_addr;
+ fwrite(
+ $fh,
+ pack(
+ 'V*',
+ $magic,
+ $revision,
+ $total,
+ $originals_lengths_addr,
+ $translations_lengths_addr,
+ $size_of_hash,
+ $hash_addr
+ )
+ );
+ fseek( $fh, $originals_lengths_addr );
+
+ // Headers' msgid is an empty string.
+ fwrite( $fh, pack( 'VV', 0, $current_addr ) );
+ ++$current_addr;
+ $originals_table = "\0";
+
+ $reader = new POMO_Reader();
+
+ foreach ( $entries as $entry ) {
+ $originals_table .= $this->export_original( $entry ) . "\0";
+ $length = $reader->strlen( $this->export_original( $entry ) );
+ fwrite( $fh, pack( 'VV', $length, $current_addr ) );
+ $current_addr += $length + 1; // Account for the NULL byte after.
+ }
+
+ $exported_headers = $this->export_headers();
+ fwrite( $fh, pack( 'VV', $reader->strlen( $exported_headers ), $current_addr ) );
+ $current_addr += strlen( $exported_headers ) + 1;
+ $translations_table = $exported_headers . "\0";
+
+ foreach ( $entries as $entry ) {
+ $translations_table .= $this->export_translations( $entry ) . "\0";
+ $length = $reader->strlen( $this->export_translations( $entry ) );
+ fwrite( $fh, pack( 'VV', $length, $current_addr ) );
+ $current_addr += $length + 1;
+ }
+
+ fwrite( $fh, $originals_table );
+ fwrite( $fh, $translations_table );
+ return true;
+ }
+
+ /**
+ * @param Translation_Entry $entry
+ * @return string
+ */
+ public function export_original( $entry ) {
+ // TODO: Warnings for control characters.
+ $exported = $entry->singular;
+ if ( $entry->is_plural ) {
+ $exported .= "\0" . $entry->plural;
+ }
+ if ( $entry->context ) {
+ $exported = $entry->context . "\4" . $exported;
+ }
+ return $exported;
+ }
+
+ /**
+ * @param Translation_Entry $entry
+ * @return string
+ */
+ public function export_translations( $entry ) {
+ // TODO: Warnings for control characters.
+ return $entry->is_plural ? implode( "\0", $entry->translations ) : $entry->translations[0];
+ }
+
+ /**
+ * @return string
+ */
+ public function export_headers() {
+ $exported = '';
+ foreach ( $this->headers as $header => $value ) {
+ $exported .= "$header: $value\n";
+ }
+ return $exported;
+ }
+
+ /**
+ * @param int $magic
+ * @return string|false
+ */
+ public function get_byteorder( $magic ) {
+ // The magic is 0x950412de.
+
+ // bug in PHP 5.0.2, see https://savannah.nongnu.org/bugs/?func=detailitem&item_id=10565
+ $magic_little = (int) - 1794895138;
+ $magic_little_64 = (int) 2500072158;
+ // 0xde120495
+ $magic_big = ( (int) - 569244523 ) & 0xFFFFFFFF;
+ if ( $magic_little === $magic || $magic_little_64 === $magic ) {
+ return 'little';
+ } elseif ( $magic_big === $magic ) {
+ return 'big';
+ } else {
+ return false;
+ }
+ }
+
+ /**
+ * @param POMO_FileReader $reader
+ * @return bool True if the import was successful, otherwise false.
+ */
+ public function import_from_reader( $reader ) {
+ $endian_string = MO::get_byteorder( $reader->readint32() );
+ if ( false === $endian_string ) {
+ return false;
+ }
+ $reader->setEndian( $endian_string );
+
+ $endian = ( 'big' === $endian_string ) ? 'N' : 'V';
+
+ $header = $reader->read( 24 );
+ if ( $reader->strlen( $header ) !== 24 ) {
+ return false;
+ }
+
+ // Parse header.
+ $header = unpack( "{$endian}revision/{$endian}total/{$endian}originals_lengths_addr/{$endian}translations_lengths_addr/{$endian}hash_length/{$endian}hash_addr", $header );
+ if ( ! is_array( $header ) ) {
+ return false;
+ }
+
+ // Support revision 0 of MO format specs, only.
+ if ( 0 !== $header['revision'] ) {
+ return false;
+ }
+
+ // Seek to data blocks.
+ $reader->seekto( $header['originals_lengths_addr'] );
+
+ // Read originals' indices.
+ $originals_lengths_length = $header['translations_lengths_addr'] - $header['originals_lengths_addr'];
+ if ( $originals_lengths_length !== $header['total'] * 8 ) {
+ return false;
+ }
+
+ $originals = $reader->read( $originals_lengths_length );
+ if ( $reader->strlen( $originals ) !== $originals_lengths_length ) {
+ return false;
+ }
+
+ // Read translations' indices.
+ $translations_lengths_length = $header['hash_addr'] - $header['translations_lengths_addr'];
+ if ( $translations_lengths_length !== $header['total'] * 8 ) {
+ return false;
+ }
+
+ $translations = $reader->read( $translations_lengths_length );
+ if ( $reader->strlen( $translations ) !== $translations_lengths_length ) {
+ return false;
+ }
+
+ // Transform raw data into set of indices.
+ $originals = $reader->str_split( $originals, 8 );
+ $translations = $reader->str_split( $translations, 8 );
+
+ // Skip hash table.
+ $strings_addr = $header['hash_addr'] + $header['hash_length'] * 4;
+
+ $reader->seekto( $strings_addr );
+
+ $strings = $reader->read_all();
+ $reader->close();
+
+ for ( $i = 0; $i < $header['total']; $i++ ) {
+ $o = unpack( "{$endian}length/{$endian}pos", $originals[ $i ] );
+ $t = unpack( "{$endian}length/{$endian}pos", $translations[ $i ] );
+ if ( ! $o || ! $t ) {
+ return false;
+ }
+
+ // Adjust offset due to reading strings to separate space before.
+ $o['pos'] -= $strings_addr;
+ $t['pos'] -= $strings_addr;
+
+ $original = $reader->substr( $strings, $o['pos'], $o['length'] );
+ $translation = $reader->substr( $strings, $t['pos'], $t['length'] );
+
+ if ( '' === $original ) {
+ $this->set_headers( $this->make_headers( $translation ) );
+ } else {
+ $entry = &$this->make_entry( $original, $translation );
+ $this->entries[ $entry->key() ] = &$entry;
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Build a Translation_Entry from original string and translation strings,
+ * found in a MO file
+ *
+ * @static
+ * @param string $original original string to translate from MO file. Might contain
+ * 0x04 as context separator or 0x00 as singular/plural separator
+ * @param string $translation translation string from MO file. Might contain
+ * 0x00 as a plural translations separator
+ * @return Translation_Entry Entry instance.
+ */
+ public function &make_entry( $original, $translation ) {
+ $entry = new Translation_Entry();
+ // Look for context, separated by \4.
+ $parts = explode( "\4", $original );
+ if ( isset( $parts[1] ) ) {
+ $original = $parts[1];
+ $entry->context = $parts[0];
+ }
+ // Look for plural original.
+ $parts = explode( "\0", $original );
+ $entry->singular = $parts[0];
+ if ( isset( $parts[1] ) ) {
+ $entry->is_plural = true;
+ $entry->plural = $parts[1];
+ }
+ // Plural translations are also separated by \0.
+ $entry->translations = explode( "\0", $translation );
+ return $entry;
+ }
+
+ /**
+ * @param int $count
+ * @return string
+ */
+ public function select_plural_form( $count ) {
+ return $this->gettext_select_plural_form( $count );
+ }
+
+ /**
+ * @return int
+ */
+ public function get_plural_forms_count() {
+ return $this->_nplurals;
+ }
+ }
+endif;
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