WordPress 4.0
[autoinstalls/wordpress.git] / wp-includes / pomo / mo.php
index 0630ef285e21f51e10d2fd53d082b1b088daad02..407c5a83e6a68a5242df8f48cca85d1963fa0d40 100644 (file)
@@ -2,7 +2,7 @@
 /**
  * Class for working with MO files
  *
- * @version $Id: mo.php 106 2009-04-23 19:48:22Z nbachiyski $
+ * @version $Id: mo.php 718 2012-10-31 00:32:02Z nbachiyski $
  * @package pomo
  * @subpackage mo
  */
@@ -10,6 +10,7 @@
 require_once dirname(__FILE__) . '/translations.php';
 require_once dirname(__FILE__) . '/streams.php';
 
+if ( !class_exists( 'MO' ) ):
 class MO extends Gettext_Translations {
 
        var $_nplurals = 2;
@@ -20,17 +21,42 @@ class MO extends Gettext_Translations {
         * @param string $filename MO file to load
         */
        function import_from_file($filename) {
-               $reader = new POMO_CachedIntFileReader($filename);
-               if (isset($reader->error)) {
+               $reader = new POMO_FileReader($filename);
+               if (!$reader->is_resource())
                        return false;
-               }
                return $this->import_from_reader($reader);
        }
-       
+
        function export_to_file($filename) {
                $fh = fopen($filename, 'wb');
                if ( !$fh ) return false;
-               $entries = array_filter($this->entries, create_function('$e', 'return !empty($e->translations);'));
+               $res = $this->export_to_file_handle( $fh );
+               fclose($fh);
+               return $res;
+       }
+
+       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 );
+       }
+
+       function is_entry_good_for_export( $entry ) {
+               if ( empty( $entry->translations ) ) {
+                       return false;
+               }
+
+               if ( !array_filter( $entry->translations ) ) {
+                       return false;
+               }
+
+               return true;
+       }
+
+       function export_to_file_handle($fh) {
+               $entries = array_filter( $this->entries, array( $this, 'is_entry_good_for_export' ) );
                ksort($entries);
                $magic = 0x950412de;
                $revision = 0;
@@ -43,36 +69,38 @@ class MO extends Gettext_Translations {
                fwrite($fh, pack('V*', $magic, $revision, $total, $originals_lenghts_addr,
                        $translations_lenghts_addr, $size_of_hash, $hash_addr));
                fseek($fh, $originals_lenghts_addr);
-               
+
                // headers' msgid is an empty string
                fwrite($fh, pack('VV', 0, $current_addr));
                $current_addr++;
                $originals_table = chr(0);
 
+               $reader = new POMO_Reader();
+
                foreach($entries as $entry) {
                        $originals_table .= $this->export_original($entry) . chr(0);
-                       $length = strlen($this->export_original($entry));
+                       $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', strlen($exported_headers), $current_addr));
+               fwrite($fh, pack('VV', $reader->strlen($exported_headers), $current_addr));
                $current_addr += strlen($exported_headers) + 1;
                $translations_table = $exported_headers . chr(0);
-               
+
                foreach($entries as $entry) {
                        $translations_table .= $this->export_translations($entry) . chr(0);
-                       $length = strlen($this->export_translations($entry));
+                       $length = $reader->strlen($this->export_translations($entry));
                        fwrite($fh, pack('VV', $length, $current_addr));
                        $current_addr += $length + 1;
                }
-               
+
                fwrite($fh, $originals_table);
                fwrite($fh, $translations_table);
-               fclose($fh);
+               return true;
        }
-       
+
        function export_original($entry) {
                //TODO: warnings for control characters
                $exported = $entry->singular;
@@ -80,12 +108,12 @@ class MO extends Gettext_Translations {
                if (!is_null($entry->context)) $exported = $entry->context . chr(4) . $exported;
                return $exported;
        }
-       
+
        function export_translations($entry) {
                //TODO: warnings for control characters
                return implode(chr(0), $entry->translations);
        }
-       
+
        function export_headers() {
                $exported = '';
                foreach($this->headers as $header => $value) {
@@ -95,15 +123,13 @@ class MO extends Gettext_Translations {
        }
 
        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;
-               
+               $magic_big = ((int) - 569244523) & 0xFFFFFFFF;
                if ($magic_little == $magic || $magic_little_64 == $magic) {
                        return 'little';
                } else if ($magic_big == $magic) {
@@ -114,61 +140,114 @@ class MO extends Gettext_Translations {
        }
 
        function import_from_reader($reader) {
-               $reader->setEndian('little');
-               $endian = MO::get_byteorder($reader->readint32());
-               if (false === $endian) {
+               $endian_string = MO::get_byteorder($reader->readint32());
+               if (false === $endian_string) {
                        return false;
                }
-               $reader->setEndian($endian);
-
-               $revision = $reader->readint32();
-               $total = $reader->readint32();
-               // get addresses of array of lenghts and offsets for original string and translations
-               $originals_lenghts_addr = $reader->readint32();
-               $translations_lenghts_addr = $reader->readint32();
-
-               $reader->seekto($originals_lenghts_addr);
-               $originals_lenghts = $reader->readint32array($total * 2); // each of 
-               $reader->seekto($translations_lenghts_addr);
-               $translations_lenghts = $reader->readint32array($total * 2);
-
-               $length = create_function('$i', 'return $i * 2 + 1;');
-               $offset = create_function('$i', 'return $i * 2 + 2;');
-
-               for ($i = 0; $i < $total; ++$i) {
-                       $reader->seekto($originals_lenghts[$offset($i)]);
-                       $original = $reader->read($originals_lenghts[$length($i)]);
-                       $reader->seekto($translations_lenghts[$offset($i)]);
-                       $translation = $reader->read($translations_lenghts[$length($i)]);
-                       if ('' == $original) {
+               $reader->setEndian($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_lenghts_addr/{$endian}translations_lenghts_addr/{$endian}hash_length/{$endian}hash_addr", $header);
+               if (!is_array($header))
+                       return false;
+
+               // support revision 0 of MO format specs, only
+               if ( $header['revision'] != 0 ) {
+                       return false;
+               }
+
+               // seek to data blocks
+               $reader->seekto( $header['originals_lenghts_addr'] );
+
+               // read originals' indices
+               $originals_lengths_length = $header['translations_lenghts_addr'] - $header['originals_lenghts_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_lenghts_length = $header['hash_addr'] - $header['translations_lenghts_addr'];
+               if ( $translations_lenghts_length != $header['total'] * 8 ) {
+                       return false;
+               }
+
+               $translations = $reader->read($translations_lenghts_length);
+               if ( $reader->strlen( $translations ) != $translations_lenghts_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 {
-                               $this->add_entry($this->make_entry($original, $translation));
+                               $entry = &$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 $translation translation string from MO file. Might contain
+        *      0x00 as a plural translations separator
         */
        function &make_entry($original, $translation) {
-               $args = array();
+               $entry = new Translation_Entry();
                // look for context
                $parts = explode(chr(4), $original);
                if (isset($parts[1])) {
                        $original = $parts[1];
-                       $args['context'] = $parts[0];
+                       $entry->context = $parts[0];
                }
                // look for plural original
                $parts = explode(chr(0), $original);
-               $args['singular'] = $parts[0];
+               $entry->singular = $parts[0];
                if (isset($parts[1])) {
-                       $args['plural'] = $parts[1];
+                       $entry->is_plural = true;
+                       $entry->plural = $parts[1];
                }
                // plural translations are also separated by \0
-               $args['translations'] = explode(chr(0), $translation);
-               $entry = & new Translation_Entry($args);
+               $entry->translations = explode(chr(0), $translation);
                return $entry;
        }
 
@@ -179,7 +258,5 @@ class MO extends Gettext_Translations {
        function get_plural_forms_count() {
                return $this->_nplurals;
        }
-
-
 }
-?>
+endif;
\ No newline at end of file