X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/cc7b1505cd9fafd87c3672f669e13e98b0c544f7..a66f9e26487c560245ef9cd17d7e87c0cbb650af:/wp-includes/gettext.php diff --git a/wp-includes/gettext.php b/wp-includes/gettext.php index cd080444..5b78127c 100644 --- a/wp-includes/gettext.php +++ b/wp-includes/gettext.php @@ -1,32 +1,32 @@ . - Copyright (c) 2005 Nico Kaiser - - This file is part of PHP-gettext. + Copyright (c) 2003 Danilo Segan . + Copyright (c) 2005 Nico Kaiser - PHP-gettext is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. + This file is part of PHP-gettext. - PHP-gettext is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. + PHP-gettext is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. - You should have received a copy of the GNU General Public License - along with PHP-gettext; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + PHP-gettext is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with PHP-gettext; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - + /** * Provides a simple gettext replacement that works independently from * the system's gettext abilities. * It can read MO files and use them for translating strings. * The files are passed to gettext_reader as a Stream (see streams.php) - * + * * This version has the ability to cache all strings and translations to * speed up the string lookup. * While the cache is enabled by default, it can be switched off with the @@ -34,324 +34,360 @@ * that you don't want to keep in memory) */ class gettext_reader { - //public: - var $error = 0; // public variable that holds error code (0 if no error) - - //private: - var $BYTEORDER = 0; // 0: low endian, 1: big endian - var $STREAM = NULL; - var $short_circuit = false; - var $enable_cache = false; - var $originals = NULL; // offset of original table - var $translations = NULL; // offset of translation table - var $pluralheader = NULL; // cache header field for plural forms - var $total = 0; // total string count - var $table_originals = NULL; // table for original strings (offsets) - var $table_translations = NULL; // table for translated strings (offsets) - var $cache_translations = NULL; // original -> translation mapping - - - /* Methods */ - - - /** - * Reads a 32bit Integer from the Stream - * - * @access private - * @return Integer from the Stream - */ - function readint() { - if ($this->BYTEORDER == 0) { - // low endian - return array_shift(unpack('V', $this->STREAM->read(4))); - } else { - // big endian - return array_shift(unpack('N', $this->STREAM->read(4))); - } - } - - /** - * Reads an array of Integers from the Stream - * - * @param int count How many elements should be read - * @return Array of Integers - */ - function readintarray($count) { - if ($this->BYTEORDER == 0) { - // low endian - return unpack('V'.$count, $this->STREAM->read(4 * $count)); - } else { - // big endian - return unpack('N'.$count, $this->STREAM->read(4 * $count)); - } - } - - /** - * Constructor - * - * @param object Reader the StreamReader object - * @param boolean enable_cache Enable or disable caching of strings (default on) - */ - function gettext_reader($Reader, $enable_cache = true) { - // If there isn't a StreamReader, turn on short circuit mode. - if (! $Reader || isset($Reader->error) ) { - $this->short_circuit = true; - return; - } - - // Caching can be turned off - $this->enable_cache = $enable_cache; - - // $MAGIC1 = (int)0x950412de; //bug in PHP 5.0.2, see https://savannah.nongnu.org/bugs/?func=detailitem&item_id=10565 - $MAGIC1 = (int) - 1794895138; - // $MAGIC2 = (int)0xde120495; //bug - $MAGIC2 = (int) - 569244523; - - $this->STREAM = $Reader; - $magic = $this->readint(); - if ($magic == ($MAGIC1 & 0xFFFFFFFF)) { // to make sure it works for 64-bit platforms - $this->BYTEORDER = 0; - } elseif ($magic == ($MAGIC2 & 0xFFFFFFFF)) { - $this->BYTEORDER = 1; - } else { - $this->error = 1; // not MO file - return false; - } - - // FIXME: Do we care about revision? We should. - $revision = $this->readint(); - - $this->total = $this->readint(); - $this->originals = $this->readint(); - $this->translations = $this->readint(); - } - - /** - * Loads the translation tables from the MO file into the cache - * If caching is enabled, also loads all strings into a cache - * to speed up translation lookups - * - * @access private - */ - function load_tables() { - if (is_array($this->cache_translations) && - is_array($this->table_originals) && - is_array($this->table_translations)) - return; - - /* get original and translations tables */ - $this->STREAM->seekto($this->originals); - $this->table_originals = $this->readintarray($this->total * 2); - $this->STREAM->seekto($this->translations); - $this->table_translations = $this->readintarray($this->total * 2); - - if ($this->enable_cache) { - $this->cache_translations = array (); - /* read all strings in the cache */ - for ($i = 0; $i < $this->total; $i++) { - $this->STREAM->seekto($this->table_originals[$i * 2 + 2]); - $original = $this->STREAM->read($this->table_originals[$i * 2 + 1]); - $this->STREAM->seekto($this->table_translations[$i * 2 + 2]); - $translation = $this->STREAM->read($this->table_translations[$i * 2 + 1]); - $this->cache_translations[$original] = $translation; - } - } - } - - /** - * Returns a string from the "originals" table - * - * @access private - * @param int num Offset number of original string - * @return string Requested string if found, otherwise '' - */ - function get_original_string($num) { - $length = $this->table_originals[$num * 2 + 1]; - $offset = $this->table_originals[$num * 2 + 2]; - if (! $length) - return ''; - $this->STREAM->seekto($offset); - $data = $this->STREAM->read($length); - return (string)$data; - } - - /** - * Returns a string from the "translations" table - * - * @access private - * @param int num Offset number of original string - * @return string Requested string if found, otherwise '' - */ - function get_translation_string($num) { - $length = $this->table_translations[$num * 2 + 1]; - $offset = $this->table_translations[$num * 2 + 2]; - if (! $length) - return ''; - $this->STREAM->seekto($offset); - $data = $this->STREAM->read($length); - return (string)$data; - } - - /** - * Binary search for string - * - * @access private - * @param string string - * @param int start (internally used in recursive function) - * @param int end (internally used in recursive function) - * @return int string number (offset in originals table) - */ - function find_string($string, $start = -1, $end = -1) { - if (($start == -1) or ($end == -1)) { - // find_string is called with only one parameter, set start end end - $start = 0; - $end = $this->total; - } - if (abs($start - $end) <= 1) { - // We're done, now we either found the string, or it doesn't exist - $txt = $this->get_original_string($start); - if ($string == $txt) - return $start; - else - return -1; - } else if ($start > $end) { - // start > end -> turn around and start over - return $this->find_string($string, $end, $start); - } else { - // Divide table in two parts - $half = (int)(($start + $end) / 2); - $cmp = strcmp($string, $this->get_original_string($half)); - if ($cmp == 0) - // string is exactly in the middle => return it - return $half; - else if ($cmp < 0) - // The string is in the upper half - return $this->find_string($string, $start, $half); - else - // The string is in the lower half - return $this->find_string($string, $half, $end); - } - } - - /** - * Translates a string - * - * @access public - * @param string string to be translated - * @return string translated string (or original, if not found) - */ - function translate($string) { - if ($this->short_circuit) - return $string; - $this->load_tables(); - - if ($this->enable_cache) { - // Caching enabled, get translated string from cache - if (array_key_exists($string, $this->cache_translations)) - return $this->cache_translations[$string]; - else - return $string; - } else { - // Caching not enabled, try to find string - $num = $this->find_string($string); - if ($num == -1) - return $string; - else - return $this->get_translation_string($num); - } - } - - /** - * Get possible plural forms from MO header - * - * @access private - * @return string plural form header - */ - function get_plural_forms() { - // lets assume message number 0 is header - // this is true, right? - $this->load_tables(); - - // cache header field for plural forms - if (! is_string($this->pluralheader)) { - if ($this->enable_cache) { - $header = $this->cache_translations[""]; - } else { - $header = $this->get_translation_string(0); - } - if (eregi("plural-forms: ([^\n]*)\n", $header, $regs)) - $expr = $regs[1]; - else - $expr = "nplurals=2; plural=n == 1 ? 0 : 1;"; - $this->pluralheader = $expr; - } - return $this->pluralheader; - } - - /** - * Detects which plural form to take - * - * @access private - * @param n count - * @return int array index of the right plural form - */ - function select_string($n) { - $string = $this->get_plural_forms(); - $string = str_replace('nplurals',"\$total",$string); - $string = str_replace("n",$n,$string); - $string = str_replace('plural',"\$plural",$string); - - $total = 0; - $plural = 0; - - eval("$string"); - if ($plural >= $total) $plural = $total - 1; - return $plural; - } - - /** - * Plural version of gettext - * - * @access public - * @param string single - * @param string plural - * @param string number - * @return translated plural form - */ - function ngettext($single, $plural, $number) { - if ($this->short_circuit) { - if ($number != 1) - return $plural; - else - return $single; - } - - // find out the appropriate form - $select = $this->select_string($number); - - // this should contains all strings separated by NULLs - $key = $single.chr(0).$plural; - - - if ($this->enable_cache) { - if (! array_key_exists($key, $this->cache_translations)) { - return ($number != 1) ? $plural : $single; - } else { - $result = $this->cache_translations[$key]; - $list = explode(chr(0), $result); - return $list[$select]; - } - } else { - $num = $this->find_string($key); - if ($num == -1) { - return ($number != 1) ? $plural : $single; - } else { - $result = $this->get_translation_string($num); - $list = explode(chr(0), $result); - return $list[$select]; - } - } - } + //public: + var $error = 0; // public variable that holds error code (0 if no error) + + //private: + var $BYTEORDER = 0; // 0: low endian, 1: big endian + var $STREAM = NULL; + var $short_circuit = false; + var $enable_cache = false; + var $originals = NULL; // offset of original table + var $translations = NULL; // offset of translation table + var $pluralheader = NULL; // cache header field for plural forms + var $select_string_function = NULL; // cache function, which chooses plural forms + var $total = 0; // total string count + var $table_originals = NULL; // table for original strings (offsets) + var $table_translations = NULL; // table for translated strings (offsets) + var $cache_translations = NULL; // original -> translation mapping + + + /* Methods */ + + + /** + * Reads a 32bit Integer from the Stream + * + * @access private + * @return Integer from the Stream + */ + function readint() { + if ($this->BYTEORDER == 0) { + // low endian + $low_end = unpack('V', $this->STREAM->read(4)); + return array_shift($low_end); + } else { + // big endian + $big_end = unpack('N', $this->STREAM->read(4)); + return array_shift($big_end); + } + } + + /** + * Reads an array of Integers from the Stream + * + * @param int count How many elements should be read + * @return Array of Integers + */ + function readintarray($count) { + if ($this->BYTEORDER == 0) { + // low endian + return unpack('V'.$count, $this->STREAM->read(4 * $count)); + } else { + // big endian + return unpack('N'.$count, $this->STREAM->read(4 * $count)); + } + } + + /** + * Constructor + * + * @param object Reader the StreamReader object + * @param boolean enable_cache Enable or disable caching of strings (default on) + */ + function gettext_reader($Reader, $enable_cache = true) { + // If there isn't a StreamReader, turn on short circuit mode. + if (! $Reader || isset($Reader->error) ) { + $this->short_circuit = true; + return; + } + + // Caching can be turned off + $this->enable_cache = $enable_cache; + + // $MAGIC1 = (int)0x950412de; //bug in PHP 5.0.2, see https://savannah.nongnu.org/bugs/?func=detailitem&item_id=10565 + $MAGIC1 = (int) - 1794895138; + // $MAGIC2 = (int)0xde120495; //bug + $MAGIC2 = (int) - 569244523; + // 64-bit fix + $MAGIC3 = (int) 2500072158; + + $this->STREAM = $Reader; + $magic = $this->readint(); + if ($magic == $MAGIC1 || $magic == $MAGIC3) { // to make sure it works for 64-bit platforms + $this->BYTEORDER = 0; + } elseif ($magic == ($MAGIC2 & 0xFFFFFFFF)) { + $this->BYTEORDER = 1; + } else { + $this->error = 1; // not MO file + return false; + } + + // FIXME: Do we care about revision? We should. + $revision = $this->readint(); + + $this->total = $this->readint(); + $this->originals = $this->readint(); + $this->translations = $this->readint(); + } + + /** + * Loads the translation tables from the MO file into the cache + * If caching is enabled, also loads all strings into a cache + * to speed up translation lookups + * + * @access private + */ + function load_tables() { + if (is_array($this->cache_translations) && + is_array($this->table_originals) && + is_array($this->table_translations)) + return; + + /* get original and translations tables */ + $this->STREAM->seekto($this->originals); + $this->table_originals = $this->readintarray($this->total * 2); + $this->STREAM->seekto($this->translations); + $this->table_translations = $this->readintarray($this->total * 2); + + if ($this->enable_cache) { + $this->cache_translations = array (); + /* read all strings in the cache */ + for ($i = 0; $i < $this->total; $i++) { + $this->STREAM->seekto($this->table_originals[$i * 2 + 2]); + $original = $this->STREAM->read($this->table_originals[$i * 2 + 1]); + $this->STREAM->seekto($this->table_translations[$i * 2 + 2]); + $translation = $this->STREAM->read($this->table_translations[$i * 2 + 1]); + $this->cache_translations[$original] = $translation; + } + } + } + + /** + * Returns a string from the "originals" table + * + * @access private + * @param int num Offset number of original string + * @return string Requested string if found, otherwise '' + */ + function get_original_string($num) { + $length = $this->table_originals[$num * 2 + 1]; + $offset = $this->table_originals[$num * 2 + 2]; + if (! $length) + return ''; + $this->STREAM->seekto($offset); + $data = $this->STREAM->read($length); + return (string)$data; + } + + /** + * Returns a string from the "translations" table + * + * @access private + * @param int num Offset number of original string + * @return string Requested string if found, otherwise '' + */ + function get_translation_string($num) { + $length = $this->table_translations[$num * 2 + 1]; + $offset = $this->table_translations[$num * 2 + 2]; + if (! $length) + return ''; + $this->STREAM->seekto($offset); + $data = $this->STREAM->read($length); + return (string)$data; + } + + /** + * Binary search for string + * + * @access private + * @param string string + * @param int start (internally used in recursive function) + * @param int end (internally used in recursive function) + * @return int string number (offset in originals table) + */ + function find_string($string, $start = -1, $end = -1) { + if (($start == -1) or ($end == -1)) { + // find_string is called with only one parameter, set start end end + $start = 0; + $end = $this->total; + } + if (abs($start - $end) <= 1) { + // We're done, now we either found the string, or it doesn't exist + $txt = $this->get_original_string($start); + if ($string == $txt) + return $start; + else + return -1; + } else if ($start > $end) { + // start > end -> turn around and start over + return $this->find_string($string, $end, $start); + } else { + // Divide table in two parts + $half = (int)(($start + $end) / 2); + $cmp = strcmp($string, $this->get_original_string($half)); + if ($cmp == 0) + // string is exactly in the middle => return it + return $half; + else if ($cmp < 0) + // The string is in the upper half + return $this->find_string($string, $start, $half); + else + // The string is in the lower half + return $this->find_string($string, $half, $end); + } + } + + /** + * Translates a string + * + * @access public + * @param string string to be translated + * @return string translated string (or original, if not found) + */ + function translate($string) { + if ($this->short_circuit) + return $string; + $this->load_tables(); + + if ($this->enable_cache) { + // Caching enabled, get translated string from cache + if (array_key_exists($string, $this->cache_translations)) + return $this->cache_translations[$string]; + else + return $string; + } else { + // Caching not enabled, try to find string + $num = $this->find_string($string); + if ($num == -1) + return $string; + else + return $this->get_translation_string($num); + } + } + + /** + * Get possible plural forms from MO header + * + * @access private + * @return string plural form header + */ + function get_plural_forms() { + // lets assume message number 0 is header + // this is true, right? + $this->load_tables(); + + // cache header field for plural forms + if (! is_string($this->pluralheader)) { + if ($this->enable_cache) { + $header = $this->cache_translations[""]; + } else { + $header = $this->get_translation_string(0); + } + $header .= "\n"; //make sure our regex matches + if (eregi("plural-forms: ([^\n]*)\n", $header, $regs)) + $expr = $regs[1]; + else + $expr = "nplurals=2; plural=n == 1 ? 0 : 1;"; + + // add parentheses + // important since PHP's ternary evaluates from left to right + $expr.= ';'; + $res= ''; + $p= 0; + for ($i= 0; $i < strlen($expr); $i++) { + $ch= $expr[$i]; + switch ($ch) { + case '?': + $res.= ' ? ('; + $p++; + break; + case ':': + $res.= ') : ('; + break; + case ';': + $res.= str_repeat( ')', $p) . ';'; + $p= 0; + break; + default: + $res.= $ch; + } + } + $this->pluralheader = $res; + } + + return $this->pluralheader; + } + + /** + * Detects which plural form to take + * + * @access private + * @param n count + * @return int array index of the right plural form + */ + function select_string($n) { + if (is_null($this->select_string_function)) { + $string = $this->get_plural_forms(); + if (preg_match("/nplurals\s*=\s*(\d+)\s*\;\s*plural\s*=\s*(.*?)\;+/", $string, $matches)) { + $nplurals = $matches[1]; + $expression = $matches[2]; + $expression = str_replace("n", '$n', $expression); + } else { + $nplurals = 2; + $expression = ' $n == 1 ? 0 : 1 '; + } + $func_body = " + \$plural = ($expression); + return (\$plural <= $nplurals)? \$plural : \$plural - 1;"; + $this->select_string_function = create_function('$n', $func_body); + } + return call_user_func($this->select_string_function, $n); + } + + /** + * Plural version of gettext + * + * @access public + * @param string single + * @param string plural + * @param string number + * @return translated plural form + */ + function ngettext($single, $plural, $number) { + if ($this->short_circuit) { + if ($number != 1) + return $plural; + else + return $single; + } + + // find out the appropriate form + $select = $this->select_string($number); + + // this should contains all strings separated by NULLs + $key = $single.chr(0).$plural; + + + if ($this->enable_cache) { + if (! array_key_exists($key, $this->cache_translations)) { + return ($number != 1) ? $plural : $single; + } else { + $result = $this->cache_translations[$key]; + $list = explode(chr(0), $result); + return $list[$select]; + } + } else { + $num = $this->find_string($key); + if ($num == -1) { + return ($number != 1) ? $plural : $single; + } else { + $result = $this->get_translation_string($num); + $list = explode(chr(0), $result); + return $list[$select]; + } + } + } }