Beiträge von libranic

<?php
/**
 * Class for working with PO files
 *
 * @version $Id: po.php 406 2010-02-07 11:10:24Z nbachiyski $
 * @package pomo
 * @subpackage po
 */


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


define('PO_MAX_LINE_LEN', 79);


ini_set('auto_detect_line_endings', 1);


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




    /**
     * 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);
        return rtrim("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);
    }


    /**
     * Formats a string in PO-style
     *
     * @static
     * @param string $string the string to format
     * @return string the poified string
     */
    function poify($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
     *
     * @static
     * @param string $string PO-formatted string
     * @return string enascaped string
     */
    function unpoify($string) {
        $escapes = array('t' => "\t", 'n' => "\n", '\\' => '\\');
        $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;
                }
            }
        }
        return $unpoified;
    }


    /**
     * Inserts $with in the beginning of every new line of $string and
     * returns the modified string
     *
     * @static
     * @param string $string prepend lines in this string
     * @param string $with prepend lines with this string
     */
    function prepend_each_line($string, $with) {
        $php_with = var_export($with, true);
        $lines = explode("\n", $string);
        // do not prepend the string on the last empty line, artefact by explode
        if ("\n" == substr($string, -1)) unset($lines[count($lines) - 1]);
        $res = implode("\n", array_map(create_function('$x', "return $php_with.\$x;"), $lines));
        // give back the empty line, we ignored above
        if ("\n" == substr($string, -1)) $res .= "\n";
        return $res;
    }


    /**
     * 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 $char character to denote a special PO comment,
     *     like :, default is a space
     */
    function comment_block($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
     *
     * @static
     * @param object &$entry the entry to convert to po string
     * @return string|bool PO-style formatted string for the entry or
     *     false if the entry is empty
     */
    function export_entry(&$entry) {
        if (is_null($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(", ", $entry->flags), ',');
        if (!is_null($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];
            $po[] = 'msgstr '.PO::poify($translation);
        } else {
            $po[] = 'msgid_plural '.PO::poify($entry->plural);
            $translations = empty($entry->translations)? array('', '') : $entry->translations;
            foreach($translations as $i => $translation) {
                $po[] = "msgstr[$i] ".PO::poify($translation);
            }
        }
        return implode("\n", $po);
    }


    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');
        return $res !== false;
    }


    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;
        $is_final = create_function('$context', 'return $context == "msgstr" || $context == "msgstr_plural";');
        while (true) {
            $lineno++;
            $line = PO::read_line($f);
            if (!$line)  {
                if (feof($f)) {
                    if ($is_final($context))
                        break;
                    elseif (!$context) // we haven't read a line and eof came
                        return null;
                    else
                        return false;
                } else {
                    return false;
                }
            }
//...

<?php
/**
 * Class for working with MO files
 *
 * @version $Id: mo.php 406 2010-02-07 11:10:24Z nbachiyski $
 * @package pomo
 * @subpackage mo
 */


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


if ( !class_exists( 'MO' ) ):
class MO extends Gettext_Translations {


    var $_nplurals = 2;


    /**
     * Fills up with the entries from MO file $filename
     *
     * @param string $filename MO file to load
     */
    function import_from_file($filename) {
        $reader = new POMO_FileReader($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);'));
        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);


        foreach($entries as $entry) {
            $originals_table .= $this->export_original($entry) . chr(0);
            $length = strlen($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));
        $current_addr += strlen($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($entry));
            fwrite($fh, pack('VV', $length, $current_addr));
            $current_addr += $length + 1;
        }


        fwrite($fh, $originals_table);
        fwrite($fh, $translations_table);
        fclose($fh);
    }


    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;
    }


    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) {
            $exported.= "$header: $value\n";
        }
        return $exported;
    }


    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 == $magic) {
            return 'little';
        } else if ($magic_big == $magic) {
            return 'big';
        } else {
            return false;
        }
    }


    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_lenghts_addr/{$endian}translations_lenghts_addr/{$endian}hash_length/{$endian}hash_addr", $header);
        if (!is_array($header))
            return false;


        extract( $header );


        // support revision 0 of MO format specs, only
        if ($revision != 0)
            return false;


        // seek to data blocks
        $reader->seekto($originals_lenghts_addr);


        // read originals' indices
        $originals_lengths_length = $translations_lenghts_addr - $originals_lenghts_addr;
        if ( $originals_lengths_length != $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 = $hash_addr - $translations_lenghts_addr;
        if ( $translations_lenghts_length != $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 = $hash_addr + $hash_length * 4;


        $reader->seekto($strings_addr);


        $strings = $reader->read_all();
        $reader->close();


        for ( $i = 0; $i < $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 $translation translation string from MO file. Might contain
     *     0x00 as a plural translations separator
     */
    function &make_entry($original, $translation) {
        $entry = new Translation_Entry();
        // look for context
        $parts = explode(chr(4), $original);
        if (isset($parts[1])) {
            $original = $parts[1];
            $entry->context = $parts[0];
        }
        // look for plural original
        $parts = explode(chr(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(chr(0), $translation);
        return $entry;
    }


    function select_plural_form($count) {
        return $this->gettext_select_plural_form($count);
    }


    function get_plural_forms_count() {
        return $this->_nplurals;
    }
}
endif;