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git-svn-id: http://svn.automattic.com/wordpress/trunk@10584 1a063a9b-81f0-0310-95a4-ce76da25c4cd
178 lines
5.2 KiB
PHP
178 lines
5.2 KiB
PHP
<?php
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/**
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* Class for working with PO files
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*
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* @version $Id: po.php 33 2009-02-16 09:33:39Z nbachiyski $
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* @package pomo
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* @subpackage po
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*/
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require_once dirname(__FILE__) . '/translations.php';
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define('PO_MAX_LINE_LEN', 79);
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ini_set('auto_detect_line_endings', 1);
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/**
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* Routines for working with PO files
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*/
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class PO extends Translations {
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/**
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* Exports headers to a PO entry
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*
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* @return string msgid/msgstr PO entry for this PO file headers, doesn't contain newline at the end
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*/
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function export_headers() {
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$header_string = '';
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foreach($this->headers as $header => $value) {
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$header_string.= "$header: $value\n";
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}
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$poified = PO::poify($header_string);
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return rtrim("msgid \"\"\nmsgstr $poified");
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}
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/**
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* Exports all entries to PO format
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*
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* @return string sequence of mgsgid/msgstr PO strings, doesn't containt newline at the end
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*/
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function export_entries() {
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//TODO sorting
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return implode("\n\n", array_map(array('PO', 'export_entry'), $this->entries));
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}
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/**
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* Exports the whole PO file as a string
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*
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* @param bool $include_headers whether to include the headers in the export
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* @return string ready for inclusion in PO file string for headers and all the enrtries
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*/
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function export($include_headers = true) {
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$res = '';
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if ($include_headers) {
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$res .= $this->export_headers();
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$res .= "\n\n";
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}
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$res .= $this->export_entries();
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return $res;
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}
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/**
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* Same as {@link export}, but writes the result to a file
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*
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* @param string $filename where to write the PO string
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* @param bool $include_headers whether to include tje headers in the export
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* @return bool true on success, false on error
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*/
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function export_to_file($filename, $include_headers = true) {
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$fh = fopen($filename, 'w');
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if (false === $fh) return false;
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$export = $this->export($include_headers);
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$res = fwrite($fh, $export);
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if (false === $res) return false;
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return fclose($fh);
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}
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/**
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* Formats a string in PO-style
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*
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* @static
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* @param string $string the string to format
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* @return string the poified string
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*/
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function poify($string) {
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$quote = '"';
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$slash = '\\';
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$newline = "\n";
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$tab = "\t";
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$replaces = array(
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"$slash" => "$slash$slash",
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"$tab" => '\t',
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"$quote" => "$slash$quote",
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);
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$string = str_replace(array_keys($replaces), array_values($replaces), $string);
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$po = array();
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foreach (explode($newline, $string) as $line) {
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$po[] = wordwrap($line, PO_MAX_LINE_LEN - 2, " $quote$newline$quote");
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}
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$po = $quote.implode("${slash}n$quote$newline$quote", $po).$quote;
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// add empty string on first line for readbility
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if (false !== strpos($po, $newline)) {
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$po = "$quote$quote$newline$po";
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}
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// remove empty strings
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$po = str_replace("$newline$quote$quote", '', $po);
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return $po;
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}
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/**
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* Inserts $with in the beginning of every new line of $string and
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* returns the modified string
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*
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* @static
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* @param string $string prepend lines in this string
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* @param string $with prepend lines with this string
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*/
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function prepend_each_line($string, $with) {
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$php_with = var_export($with, true);
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$lines = explode("\n", $string);
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// do not prepend the string on the last empty line, artefact by explode
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if ("\n" == substr($string, -1)) unset($lines[count($lines) - 1]);
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$res = implode("\n", array_map(create_function('$x', "return $php_with.\$x;"), $lines));
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// give back the empty line, we ignored above
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if ("\n" == substr($string, -1)) $res .= "\n";
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return $res;
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}
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/**
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* Prepare a text as a comment -- wraps the lines and prepends #
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* and a special character to each line
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*
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* @access private
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* @param string $text the comment text
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* @param string $char character to denote a special PO comment,
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* like :, default is a space
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*/
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function comment_block($text, $char=' ') {
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$text = wordwrap($text, PO_MAX_LINE_LEN - 3);
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return PO::prepend_each_line($text, "#$char ");
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}
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/**
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* Builds a string from the entry for inclusion in PO file
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*
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* @static
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* @param object &$entry the entry to convert to po string
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* @return string|bool PO-style formatted string for the entry or
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* false if the entry is empty
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*/
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function export_entry(&$entry) {
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if (is_null($entry->singular)) return false;
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$po = array();
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if (!empty($entry->translator_comments)) $po[] = PO::comment_block($entry->translator_comments);
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if (!empty($entry->extracted_comments)) $po[] = PO::comment_block($entry->extracted_comments, '.');
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if (!empty($entry->references)) $po[] = PO::comment_block(implode(' ', $entry->references), ':');
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if (!empty($entry->flags)) $po[] = PO::comment_block(implode("\n", $entry->flags), ',');
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if (!is_null($entry->context)) $po[] = 'msgctxt '.PO::poify($entry->context);
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$po[] = 'msgid '.PO::poify($entry->singular);
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if (!$entry->is_plural) {
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$translation = empty($entry->translations)? '' : $entry->translations[0];
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$po[] = 'msgstr '.PO::poify($translation);
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} else {
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$po[] = 'msgid_plural '.PO::poify($entry->plural);
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$translations = empty($entry->translations)? array('', '') : $entry->translations;
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foreach($translations as $i => $translation) {
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$po[] = "msgstr[$i] ".PO::poify($translation);
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}
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}
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return implode("\n", $po);
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}
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}
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?>
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