Parses the file.
Source
protected function parse_file(): bool {
$this->parsed = true;
$file_contents = file_get_contents( $this->file ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents
if ( false === $file_contents ) {
return false;
}
$file_length = strlen( $file_contents );
if ( $file_length < 24 ) {
$this->error = 'Invalid data';
return false;
}
$this->uint32 = $this->detect_endian_and_validate_file( substr( $file_contents, 0, 4 ) );
if ( false === $this->uint32 ) {
return false;
}
$offsets = substr( $file_contents, 4, 24 );
if ( false === $offsets ) {
return false;
}
$offsets = unpack( "{$this->uint32}rev/{$this->uint32}total/{$this->uint32}originals_addr/{$this->uint32}translations_addr/{$this->uint32}hash_length/{$this->uint32}hash_addr", $offsets );
if ( false === $offsets ) {
return false;
}
$offsets['originals_length'] = $offsets['translations_addr'] - $offsets['originals_addr'];
$offsets['translations_length'] = $offsets['hash_addr'] - $offsets['translations_addr'];
if ( $offsets['rev'] > 0 ) {
$this->error = 'Unsupported revision';
return false;
}
if ( $offsets['translations_addr'] > $file_length || $offsets['originals_addr'] > $file_length ) {
$this->error = 'Invalid data';
return false;
}
// Load the Originals.
$original_data = str_split( substr( $file_contents, $offsets['originals_addr'], $offsets['originals_length'] ), 8 );
$translations_data = str_split( substr( $file_contents, $offsets['translations_addr'], $offsets['translations_length'] ), 8 );
foreach ( array_keys( $original_data ) as $i ) {
$o = unpack( "{$this->uint32}length/{$this->uint32}pos", $original_data[ $i ] );
$t = unpack( "{$this->uint32}length/{$this->uint32}pos", $translations_data[ $i ] );
if ( false === $o || false === $t ) {
continue;
}
$original = substr( $file_contents, $o['pos'], $o['length'] );
$translation = substr( $file_contents, $t['pos'], $t['length'] );
// GlotPress bug.
$translation = rtrim( $translation, "\0" );
// Metadata about the MO file is stored in the first translation entry.
if ( '' === $original ) {
foreach ( explode( "\n", $translation ) as $meta_line ) {
if ( '' === $meta_line ) {
continue;
}
list( $name, $value ) = array_map( 'trim', explode( ':', $meta_line, 2 ) );
$this->headers[ strtolower( $name ) ] = $value;
}
} else {
/*
* In MO files, the key normally contains both singular and plural versions.
* However, this just adds the singular string for lookup,
* which caters for cases where both __( 'Product' ) and _n( 'Product', 'Products' )
* are used and the translation is expected to be the same for both.
*/
$parts = explode( "\0", (string) $original );
$this->entries[ $parts[0] ] = $translation;
}
}
return true;
}
Changelog
Version | Description |
---|---|
6.5.0 | Introduced. |
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