[44] | 1 | <?php
|
---|
| 2 | /**
|
---|
| 3 | * Class for working with PO files
|
---|
| 4 | *
|
---|
| 5 | * @version $Id: po.php 123 2009-05-13 19:35:43Z nbachiyski $
|
---|
| 6 | * @package pomo
|
---|
| 7 | * @subpackage po
|
---|
| 8 | */
|
---|
| 9 |
|
---|
| 10 | require_once dirname(__FILE__) . '/translations.php';
|
---|
| 11 |
|
---|
| 12 | define('PO_MAX_LINE_LEN', 79);
|
---|
| 13 |
|
---|
| 14 | ini_set('auto_detect_line_endings', 1);
|
---|
| 15 |
|
---|
| 16 | /**
|
---|
| 17 | * Routines for working with PO files
|
---|
| 18 | */
|
---|
| 19 | class PO extends Gettext_Translations {
|
---|
| 20 |
|
---|
| 21 |
|
---|
| 22 | /**
|
---|
| 23 | * Exports headers to a PO entry
|
---|
| 24 | *
|
---|
| 25 | * @return string msgid/msgstr PO entry for this PO file headers, doesn't contain newline at the end
|
---|
| 26 | */
|
---|
| 27 | function export_headers() {
|
---|
| 28 | $header_string = '';
|
---|
| 29 | foreach($this->headers as $header => $value) {
|
---|
| 30 | $header_string.= "$header: $value\n";
|
---|
| 31 | }
|
---|
| 32 | $poified = PO::poify($header_string);
|
---|
| 33 | return rtrim("msgid \"\"\nmsgstr $poified");
|
---|
| 34 | }
|
---|
| 35 |
|
---|
| 36 | /**
|
---|
| 37 | * Exports all entries to PO format
|
---|
| 38 | *
|
---|
| 39 | * @return string sequence of mgsgid/msgstr PO strings, doesn't containt newline at the end
|
---|
| 40 | */
|
---|
| 41 | function export_entries() {
|
---|
| 42 | //TODO sorting
|
---|
| 43 | return implode("\n\n", array_map(array('PO', 'export_entry'), $this->entries));
|
---|
| 44 | }
|
---|
| 45 |
|
---|
| 46 | /**
|
---|
| 47 | * Exports the whole PO file as a string
|
---|
| 48 | *
|
---|
| 49 | * @param bool $include_headers whether to include the headers in the export
|
---|
| 50 | * @return string ready for inclusion in PO file string for headers and all the enrtries
|
---|
| 51 | */
|
---|
| 52 | function export($include_headers = true) {
|
---|
| 53 | $res = '';
|
---|
| 54 | if ($include_headers) {
|
---|
| 55 | $res .= $this->export_headers();
|
---|
| 56 | $res .= "\n\n";
|
---|
| 57 | }
|
---|
| 58 | $res .= $this->export_entries();
|
---|
| 59 | return $res;
|
---|
| 60 | }
|
---|
| 61 |
|
---|
| 62 | /**
|
---|
| 63 | * Same as {@link export}, but writes the result to a file
|
---|
| 64 | *
|
---|
| 65 | * @param string $filename where to write the PO string
|
---|
| 66 | * @param bool $include_headers whether to include tje headers in the export
|
---|
| 67 | * @return bool true on success, false on error
|
---|
| 68 | */
|
---|
| 69 | function export_to_file($filename, $include_headers = true) {
|
---|
| 70 | $fh = fopen($filename, 'w');
|
---|
| 71 | if (false === $fh) return false;
|
---|
| 72 | $export = $this->export($include_headers);
|
---|
| 73 | $res = fwrite($fh, $export);
|
---|
| 74 | if (false === $res) return false;
|
---|
| 75 | return fclose($fh);
|
---|
| 76 | }
|
---|
| 77 |
|
---|
| 78 | /**
|
---|
| 79 | * Formats a string in PO-style
|
---|
| 80 | *
|
---|
| 81 | * @static
|
---|
| 82 | * @param string $string the string to format
|
---|
| 83 | * @return string the poified string
|
---|
| 84 | */
|
---|
| 85 | function poify($string) {
|
---|
| 86 | $quote = '"';
|
---|
| 87 | $slash = '\\';
|
---|
| 88 | $newline = "\n";
|
---|
| 89 |
|
---|
| 90 | $replaces = array(
|
---|
| 91 | "$slash" => "$slash$slash",
|
---|
| 92 | "$quote" => "$slash$quote",
|
---|
| 93 | "\t" => '\t',
|
---|
| 94 | );
|
---|
| 95 |
|
---|
| 96 | $string = str_replace(array_keys($replaces), array_values($replaces), $string);
|
---|
| 97 |
|
---|
| 98 | $po = $quote.implode("${slash}n$quote$newline$quote", explode($newline, $string)).$quote;
|
---|
| 99 | // add empty string on first line for readbility
|
---|
| 100 | if (false !== strpos($string, $newline) &&
|
---|
| 101 | (substr_count($string, $newline) > 1 || !($newline === substr($string, -strlen($newline))))) {
|
---|
| 102 | $po = "$quote$quote$newline$po";
|
---|
| 103 | }
|
---|
| 104 | // remove empty strings
|
---|
| 105 | $po = str_replace("$newline$quote$quote", '', $po);
|
---|
| 106 | return $po;
|
---|
| 107 | }
|
---|
| 108 |
|
---|
| 109 | /**
|
---|
| 110 | * Gives back the original string from a PO-formatted string
|
---|
| 111 | *
|
---|
| 112 | * @static
|
---|
| 113 | * @param string $string PO-formatted string
|
---|
| 114 | * @return string enascaped string
|
---|
| 115 | */
|
---|
| 116 | function unpoify($string) {
|
---|
| 117 | $escapes = array('t' => "\t", 'n' => "\n", '\\' => '\\');
|
---|
| 118 | $lines = array_map('trim', explode("\n", $string));
|
---|
| 119 | $lines = array_map(array('PO', 'trim_quotes'), $lines);
|
---|
| 120 | $unpoified = '';
|
---|
| 121 | $previous_is_backslash = false;
|
---|
| 122 | foreach($lines as $line) {
|
---|
| 123 | preg_match_all('/./u', $line, $chars);
|
---|
| 124 | $chars = $chars[0];
|
---|
| 125 | foreach($chars as $char) {
|
---|
| 126 | if (!$previous_is_backslash) {
|
---|
| 127 | if ('\\' == $char)
|
---|
| 128 | $previous_is_backslash = true;
|
---|
| 129 | else
|
---|
| 130 | $unpoified .= $char;
|
---|
| 131 | } else {
|
---|
| 132 | $previous_is_backslash = false;
|
---|
| 133 | $unpoified .= isset($escapes[$char])? $escapes[$char] : $char;
|
---|
| 134 | }
|
---|
| 135 | }
|
---|
| 136 | }
|
---|
| 137 | return $unpoified;
|
---|
| 138 | }
|
---|
| 139 |
|
---|
| 140 | /**
|
---|
| 141 | * Inserts $with in the beginning of every new line of $string and
|
---|
| 142 | * returns the modified string
|
---|
| 143 | *
|
---|
| 144 | * @static
|
---|
| 145 | * @param string $string prepend lines in this string
|
---|
| 146 | * @param string $with prepend lines with this string
|
---|
| 147 | */
|
---|
| 148 | function prepend_each_line($string, $with) {
|
---|
| 149 | $php_with = var_export($with, true);
|
---|
| 150 | $lines = explode("\n", $string);
|
---|
| 151 | // do not prepend the string on the last empty line, artefact by explode
|
---|
| 152 | if ("\n" == substr($string, -1)) unset($lines[count($lines) - 1]);
|
---|
| 153 | $res = implode("\n", array_map(create_function('$x', "return $php_with.\$x;"), $lines));
|
---|
| 154 | // give back the empty line, we ignored above
|
---|
| 155 | if ("\n" == substr($string, -1)) $res .= "\n";
|
---|
| 156 | return $res;
|
---|
| 157 | }
|
---|
| 158 |
|
---|
| 159 | /**
|
---|
| 160 | * Prepare a text as a comment -- wraps the lines and prepends #
|
---|
| 161 | * and a special character to each line
|
---|
| 162 | *
|
---|
| 163 | * @access private
|
---|
| 164 | * @param string $text the comment text
|
---|
| 165 | * @param string $char character to denote a special PO comment,
|
---|
| 166 | * like :, default is a space
|
---|
| 167 | */
|
---|
| 168 | function comment_block($text, $char=' ') {
|
---|
| 169 | $text = wordwrap($text, PO_MAX_LINE_LEN - 3);
|
---|
| 170 | return PO::prepend_each_line($text, "#$char ");
|
---|
| 171 | }
|
---|
| 172 |
|
---|
| 173 | /**
|
---|
| 174 | * Builds a string from the entry for inclusion in PO file
|
---|
| 175 | *
|
---|
| 176 | * @static
|
---|
| 177 | * @param object &$entry the entry to convert to po string
|
---|
| 178 | * @return string|bool PO-style formatted string for the entry or
|
---|
| 179 | * false if the entry is empty
|
---|
| 180 | */
|
---|
| 181 | function export_entry(&$entry) {
|
---|
| 182 | if (is_null($entry->singular)) return false;
|
---|
| 183 | $po = array();
|
---|
| 184 | if (!empty($entry->translator_comments)) $po[] = PO::comment_block($entry->translator_comments);
|
---|
| 185 | if (!empty($entry->extracted_comments)) $po[] = PO::comment_block($entry->extracted_comments, '.');
|
---|
| 186 | if (!empty($entry->references)) $po[] = PO::comment_block(implode(' ', $entry->references), ':');
|
---|
| 187 | if (!empty($entry->flags)) $po[] = PO::comment_block(implode(", ", $entry->flags), ',');
|
---|
| 188 | if (!is_null($entry->context)) $po[] = 'msgctxt '.PO::poify($entry->context);
|
---|
| 189 | $po[] = 'msgid '.PO::poify($entry->singular);
|
---|
| 190 | if (!$entry->is_plural) {
|
---|
| 191 | $translation = empty($entry->translations)? '' : $entry->translations[0];
|
---|
| 192 | $po[] = 'msgstr '.PO::poify($translation);
|
---|
| 193 | } else {
|
---|
| 194 | $po[] = 'msgid_plural '.PO::poify($entry->plural);
|
---|
| 195 | $translations = empty($entry->translations)? array('', '') : $entry->translations;
|
---|
| 196 | foreach($translations as $i => $translation) {
|
---|
| 197 | $po[] = "msgstr[$i] ".PO::poify($translation);
|
---|
| 198 | }
|
---|
| 199 | }
|
---|
| 200 | return implode("\n", $po);
|
---|
| 201 | }
|
---|
| 202 |
|
---|
| 203 | function import_from_file($filename) {
|
---|
| 204 | $f = fopen($filename, 'r');
|
---|
| 205 | if (!$f) return false;
|
---|
| 206 | $lineno = 0;
|
---|
| 207 | while (true) {
|
---|
| 208 | $res = $this->read_entry($f, $lineno);
|
---|
| 209 | if (!$res) break;
|
---|
| 210 | if ($res['entry']->singular == '') {
|
---|
| 211 | $this->set_headers($this->make_headers($res['entry']->translations[0]));
|
---|
| 212 | } else {
|
---|
| 213 | $this->add_entry($res['entry']);
|
---|
| 214 | }
|
---|
| 215 | }
|
---|
| 216 | PO::read_line($f, 'clear');
|
---|
| 217 | return $res !== false;
|
---|
| 218 | }
|
---|
| 219 |
|
---|
| 220 | function read_entry($f, $lineno = 0) {
|
---|
| 221 | $entry = new Translation_Entry();
|
---|
| 222 | // where were we in the last step
|
---|
| 223 | // can be: comment, msgctxt, msgid, msgid_plural, msgstr, msgstr_plural
|
---|
| 224 | $context = '';
|
---|
| 225 | $msgstr_index = 0;
|
---|
| 226 | $is_final = create_function('$context', 'return $context == "msgstr" || $context == "msgstr_plural";');
|
---|
| 227 | while (true) {
|
---|
| 228 | $lineno++;
|
---|
| 229 | $line = PO::read_line($f);
|
---|
| 230 | if (!$line) {
|
---|
| 231 | if (feof($f)) {
|
---|
| 232 | if ($is_final($context))
|
---|
| 233 | break;
|
---|
| 234 | elseif (!$context) // we haven't read a line and eof came
|
---|
| 235 | return null;
|
---|
| 236 | else
|
---|
| 237 | return false;
|
---|
| 238 | } else {
|
---|
| 239 | return false;
|
---|
| 240 | }
|
---|
| 241 | }
|
---|
| 242 | if ($line == "\n") continue;
|
---|
| 243 | $line = trim($line);
|
---|
| 244 | if (preg_match('/^#/', $line, $m)) {
|
---|
| 245 | // the comment is the start of a new entry
|
---|
| 246 | if ($is_final($context)) {
|
---|
| 247 | PO::read_line($f, 'put-back');
|
---|
| 248 | $lineno--;
|
---|
| 249 | break;
|
---|
| 250 | }
|
---|
| 251 | // comments have to be at the beginning
|
---|
| 252 | if ($context && $context != 'comment') {
|
---|
| 253 | return false;
|
---|
| 254 | }
|
---|
| 255 | // add comment
|
---|
| 256 | $this->add_comment_to_entry($entry, $line);;
|
---|
| 257 | } elseif (preg_match('/^msgctxt\s+(".*")/', $line, $m)) {
|
---|
| 258 | if ($is_final($context)) {
|
---|
| 259 | PO::read_line($f, 'put-back');
|
---|
| 260 | $lineno--;
|
---|
| 261 | break;
|
---|
| 262 | }
|
---|
| 263 | if ($context && $context != 'comment') {
|
---|
| 264 | return false;
|
---|
| 265 | }
|
---|
| 266 | $context = 'msgctxt';
|
---|
| 267 | $entry->context .= PO::unpoify($m[1]);
|
---|
| 268 | } elseif (preg_match('/^msgid\s+(".*")/', $line, $m)) {
|
---|
| 269 | if ($is_final($context)) {
|
---|
| 270 | PO::read_line($f, 'put-back');
|
---|
| 271 | $lineno--;
|
---|
| 272 | break;
|
---|
| 273 | }
|
---|
| 274 | if ($context && $context != 'msgctxt' && $context != 'comment') {
|
---|
| 275 | return false;
|
---|
| 276 | }
|
---|
| 277 | $context = 'msgid';
|
---|
| 278 | $entry->singular .= PO::unpoify($m[1]);
|
---|
| 279 | } elseif (preg_match('/^msgid_plural\s+(".*")/', $line, $m)) {
|
---|
| 280 | if ($context != 'msgid') {
|
---|
| 281 | return false;
|
---|
| 282 | }
|
---|
| 283 | $context = 'msgid_plural';
|
---|
| 284 | $entry->is_plural = true;
|
---|
| 285 | $entry->plural .= PO::unpoify($m[1]);
|
---|
| 286 | } elseif (preg_match('/^msgstr\s+(".*")/', $line, $m)) {
|
---|
| 287 | if ($context != 'msgid') {
|
---|
| 288 | return false;
|
---|
| 289 | }
|
---|
| 290 | $context = 'msgstr';
|
---|
| 291 | $entry->translations = array(PO::unpoify($m[1]));
|
---|
| 292 | } elseif (preg_match('/^msgstr\[(\d+)\]\s+(".*")/', $line, $m)) {
|
---|
| 293 | if ($context != 'msgid_plural' && $context != 'msgstr_plural') {
|
---|
| 294 | return false;
|
---|
| 295 | }
|
---|
| 296 | $context = 'msgstr_plural';
|
---|
| 297 | $msgstr_index = $m[1];
|
---|
| 298 | $entry->translations[$m[1]] = PO::unpoify($m[2]);
|
---|
| 299 | } elseif (preg_match('/^".*"$/', $line)) {
|
---|
| 300 | $unpoified = PO::unpoify($line);
|
---|
| 301 | switch ($context) {
|
---|
| 302 | case 'msgid':
|
---|
| 303 | $entry->singular .= $unpoified; break;
|
---|
| 304 | case 'msgctxt':
|
---|
| 305 | $entry->context .= $unpoified; break;
|
---|
| 306 | case 'msgid_plural':
|
---|
| 307 | $entry->plural .= $unpoified; break;
|
---|
| 308 | case 'msgstr':
|
---|
| 309 | $entry->translations[0] .= $unpoified; break;
|
---|
| 310 | case 'msgstr_plural':
|
---|
| 311 | $entry->translations[$msgstr_index] .= $unpoified; break;
|
---|
| 312 | default:
|
---|
| 313 | return false;
|
---|
| 314 | }
|
---|
| 315 | } else {
|
---|
| 316 | return false;
|
---|
| 317 | }
|
---|
| 318 | }
|
---|
| 319 | if (array() == array_filter($entry->translations)) $entry->translations = array();
|
---|
| 320 | return array('entry' => $entry, 'lineno' => $lineno);
|
---|
| 321 | }
|
---|
| 322 |
|
---|
| 323 | function read_line($f, $action = 'read') {
|
---|
| 324 | static $last_line = '';
|
---|
| 325 | static $use_last_line = false;
|
---|
| 326 | if ('clear' == $action) {
|
---|
| 327 | $last_line = '';
|
---|
| 328 | return true;
|
---|
| 329 | }
|
---|
| 330 | if ('put-back' == $action) {
|
---|
| 331 | $use_last_line = true;
|
---|
| 332 | return true;
|
---|
| 333 | }
|
---|
| 334 | $line = $use_last_line? $last_line : fgets($f);
|
---|
| 335 | $last_line = $line;
|
---|
| 336 | $use_last_line = false;
|
---|
| 337 | return $line;
|
---|
| 338 | }
|
---|
| 339 |
|
---|
| 340 | function add_comment_to_entry(&$entry, $po_comment_line) {
|
---|
| 341 | $first_two = substr($po_comment_line, 0, 2);
|
---|
| 342 | $comment = trim(substr($po_comment_line, 2));
|
---|
| 343 | if ('#:' == $first_two) {
|
---|
| 344 | $entry->references = array_merge($entry->references, preg_split('/\s+/', $comment));
|
---|
| 345 | } elseif ('#.' == $first_two) {
|
---|
| 346 | $entry->extracted_comments = trim($entry->extracted_comments . "\n" . $comment);
|
---|
| 347 | } elseif ('#,' == $first_two) {
|
---|
| 348 | $entry->flags = array_merge($entry->flags, preg_split('/,\s*/', $comment));
|
---|
| 349 | } else {
|
---|
| 350 | $entry->translator_comments = trim($entry->translator_comments . "\n" . $comment);
|
---|
| 351 | }
|
---|
| 352 | }
|
---|
| 353 |
|
---|
| 354 | function trim_quotes($s) {
|
---|
| 355 | if ( substr($s, 0, 1) == '"') $s = substr($s, 1);
|
---|
| 356 | if ( substr($s, -1, 1) == '"') $s = substr($s, 0, -1);
|
---|
| 357 | return $s;
|
---|
| 358 | }
|
---|
| 359 | }
|
---|
| 360 | ?>
|
---|