/**
* Class for working with MO files
*
- * @version $Id: mo.php 33 2009-02-16 09:33:39Z nbachiyski $
+ * @version $Id: mo.php 718 2012-10-31 00:32:02Z nbachiyski $
* @package pomo
* @subpackage mo
*/
require_once dirname(__FILE__) . '/translations.php';
require_once dirname(__FILE__) . '/streams.php';
-class MO extends Translations {
+if ( !class_exists( 'MO' ) ):
+class MO extends Gettext_Translations {
var $_nplurals = 2;
- function set_header($header, $value) {
- parent::set_header($header, $value);
- if ('Plural-Forms' == $header)
- $this->_gettext_select_plural_form = $this->_make_gettext_select_plural_form($value);
- }
-
/**
* Fills up with the entries from MO file $filename
*
* @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 get_byteorder($magic) {
+ /**
+ * @param string $filename
+ * @return bool
+ */
+ function export_to_file($filename) {
+ $fh = fopen($filename, 'wb');
+ if ( !$fh ) return false;
+ $res = $this->export_to_file_handle( $fh );
+ fclose($fh);
+ return $res;
+ }
+
+ /**
+ * @return string|false
+ */
+ 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
+ */
+ function is_entry_good_for_export( $entry ) {
+ if ( empty( $entry->translations ) ) {
+ return false;
+ }
+
+ if ( !array_filter( $entry->translations ) ) {
+ return false;
+ }
+
+ return true;
+ }
+ /**
+ * @param resource $fh
+ * @return true
+ */
+ function export_to_file_handle($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_lenghts_addr = 28;
+ $translations_lenghts_addr = $originals_lenghts_addr + 8 * $total;
+ $size_of_hash = 0;
+ $hash_addr = $translations_lenghts_addr + 8 * $total;
+ $current_addr = $hash_addr;
+ fwrite($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 = $reader->strlen($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 = $exported_headers . chr(0);
+
+ foreach($entries as $entry) {
+ $translations_table .= $this->export_translations($entry) . chr(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 $entry
+ * @return string
+ */
+ function export_original($entry) {
+ //TODO: warnings for control characters
+ $exported = $entry->singular;
+ if ($entry->is_plural) $exported .= chr(0).$entry->plural;
+ if (!is_null($entry->context)) $exported = $entry->context . chr(4) . $exported;
+ return $exported;
+ }
+
+ /**
+ * @param Translation_Entry $entry
+ * @return string
+ */
+ function export_translations($entry) {
+ //TODO: warnings for control characters
+ return implode(chr(0), $entry->translations);
+ }
+
+ /**
+ * @return string
+ */
+ function export_headers() {
+ $exported = '';
+ foreach($this->headers as $header => $value) {
+ $exported.= "$header: $value\n";
+ }
+ return $exported;
+ }
+
+ /**
+ * @param int $magic
+ * @return string|false
+ */
+ function get_byteorder($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) {
}
}
+ /**
+ * @param POMO_FileReader $reader
+ */
function import_from_reader($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_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;
}
- $reader->setEndian($endian);
-
- $revision = $reader->readint32();
- $total = $reader->readint32();
- // get addresses of array of lenghts and offsets for original string and translations
- $originals_lo_addr = $reader->readint32();
- $translations_lo_addr = $reader->readint32();
-
- $reader->seekto($originals_lo_addr);
- $originals_lo = $reader->readint32array($total * 2); // each of
- $reader->seekto($translations_lo_addr);
- $translations_lo = $reader->readint32array($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_lo[$offset($i)]);
- $original = $reader->read($originals_lo[$length($i)]);
- $reader->seekto($translations_lo[$offset($i)]);
- $translation = $reader->read($translations_lo[$length($i)]);
- if ('' == $original) {
+
+ // 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()] = &$entry;
}
}
return true;
}
- function make_headers($translation) {
- $headers = array();
- $lines = explode("\n", $translation);
- foreach($lines as $line) {
- $parts = explode(':', $line, 2);
- if (!isset($parts[1])) continue;
- $headers[trim($parts[0])] = trim($parts[1]);
- }
- return $headers;
- }
-
/**
+ * 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;
}
+ /**
+ * @param int $count
+ * @return string
+ */
function select_plural_form($count) {
return $this->gettext_select_plural_form($count);
}
+ /**
+ * @return int
+ */
function get_plural_forms_count() {
return $this->_nplurals;
}
-
-
}
-?>
+endif;
\ No newline at end of file
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