friendica-addons/jappixmini/jappix/php/gettext.php

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2012-04-17 23:12:24 +00:00
<?php
/*
Copyright (c) 2003, 2005, 2006, 2009 Danilo Segan <danilo@kvota.net>.
This file is part of PHP-gettext.
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.
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
*/
/**
* MODIFIED FOR THE JAPPIX PROJECT
* Last revision: 10/11/10
*/
// Simple class to wrap file streams, string streams, etc.
// seek is essential, and it should be byte stream
class StreamReader {
// should return a string [FIXME: perhaps return array of bytes?]
function read($bytes) {
return false;
}
// should return new position
function seekto($position) {
return false;
}
// returns current position
function currentpos() {
return false;
}
// returns length of entire stream (limit for seekto()s)
function length() {
return false;
}
};
class StringReader {
var $_pos;
var $_str;
function StringReader($str='') {
$this->_str = $str;
$this->_pos = 0;
}
function read($bytes) {
$data = substr($this->_str, $this->_pos, $bytes);
$this->_pos += $bytes;
if (strlen($this->_str)<$this->_pos)
$this->_pos = strlen($this->_str);
return $data;
}
function seekto($pos) {
$this->_pos = $pos;
if (strlen($this->_str)<$this->_pos)
$this->_pos = strlen($this->_str);
return $this->_pos;
}
function currentpos() {
return $this->_pos;
}
function length() {
return strlen($this->_str);
}
};
class FileReader {
var $_pos;
var $_fd;
var $_length;
function FileReader($filename) {
if (file_exists($filename)) {
$this->_length=filesize($filename);
$this->_pos = 0;
$this->_fd = fopen($filename,'rb');
if (!$this->_fd) {
$this->error = 3; // Cannot read file, probably permissions
return false;
}
} else {
$this->error = 2; // File doesn't exist
return false;
}
}
function read($bytes) {
if ($bytes) {
fseek($this->_fd, $this->_pos);
// PHP 5.1.1 does not read more than 8192 bytes in one fread()
// the discussions at PHP Bugs suggest it's the intended behaviour
$data = '';
while ($bytes > 0) {
$chunk = fread($this->_fd, $bytes);
$data .= $chunk;
$bytes -= strlen($chunk);
}
$this->_pos = ftell($this->_fd);
return $data;
} else return '';
}
function seekto($pos) {
fseek($this->_fd, $pos);
$this->_pos = ftell($this->_fd);
return $this->_pos;
}
function currentpos() {
return $this->_pos;
}
function length() {
return $this->_length;
}
function close() {
fclose($this->_fd);
}
};
// Preloads entire file in memory first, then creates a StringReader
// over it (it assumes knowledge of StringReader internals)
class CachedFileReader extends StringReader {
function CachedFileReader($filename) {
if (file_exists($filename)) {
$length=filesize($filename);
$fd = fopen($filename,'rb');
if (!$fd) {
$this->error = 3; // Cannot read file, probably permissions
return false;
}
$this->_str = fread($fd, $length);
fclose($fd);
} else {
$this->error = 2; // File doesn't exist
return false;
}
}
};
/*
Copyright (c) 2003, 2009 Danilo Segan <danilo@kvota.net>.
Copyright (c) 2005 Nico Kaiser <nico@siriux.net>
This file is part of PHP-gettext.
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.
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
* second parameter in the constructor (e.g. whenusing very large MO files
* 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
$input=unpack('V', $this->STREAM->read(4));
return array_shift($input);
} else {
// big endian
$input=unpack('N', $this->STREAM->read(4));
return array_shift($input);
}
}
function read($bytes) {
return $this->STREAM->read($bytes);
}
/**
* 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 = "\x95\x04\x12\xde";
$MAGIC2 = "\xde\x12\x04\x95";
$this->STREAM = $Reader;
$magic = $this->read(4);
if ($magic == $MAGIC1) {
$this->BYTEORDER = 1;
} elseif ($magic == $MAGIC2) {
$this->BYTEORDER = 0;
} 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);
}
}
/**
* Sanitize plural form expression for use in PHP eval call.
*
* @access private
* @return string sanitized plural form expression
*/
function sanitize_plural_expression($expr) {
// Get rid of disallowed characters.
$expr = preg_replace('@[^a-zA-Z0-9_:;\(\)\?\|\&=!<>+*/\%-]@', '', $expr);
// Add parenthesis for tertiary '?' operator.
$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;
}
}
return $res;
}
/**
* 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 = $this->sanitize_plural_expression($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];
}
}
}
}
/*
Copyright (c) 2005 Steven Armstrong <sa at c-area dot ch>
Copyright (c) 2009 Danilo Segan <danilo@kvota.net>
Drop in replacement for native gettext.
This file is part of PHP-gettext.
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.
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
*/
/*
LC_CTYPE 0
LC_NUMERIC 1
LC_TIME 2
LC_COLLATE 3
LC_MONETARY 4
LC_MESSAGES 5
LC_ALL 6
*/
// LC_MESSAGES is not available if php-gettext is not loaded
// while the other constants are already available from session extension.
if (!defined('LC_MESSAGES')) {
define('LC_MESSAGES', 5);
}
// Variables
global $text_domains, $default_domain, $LC_CATEGORIES, $EMULATEGETTEXT, $CURRENTLOCALE;
$text_domains = array();
$default_domain = 'messages';
$LC_CATEGORIES = array('LC_CTYPE', 'LC_NUMERIC', 'LC_TIME', 'LC_COLLATE', 'LC_MONETARY', 'LC_MESSAGES', 'LC_ALL');
$EMULATEGETTEXT = 0;
$CURRENTLOCALE = '';
/* Class to hold a single domain included in $text_domains. */
class domain {
var $l10n;
var $path;
var $codeset;
}
// Utility functions
/**
* Utility function to get a StreamReader for the given text domain.
*/
function _get_reader($domain=null, $category=5, $enable_cache=true) {
global $text_domains, $default_domain, $LC_CATEGORIES;
if (!isset($domain)) $domain = $default_domain;
if (!isset($text_domains[$domain]->l10n)) {
// get the current locale
$locale = _setlocale(LC_MESSAGES, 0);
$bound_path = isset($text_domains[$domain]->path) ?
$text_domains[$domain]->path : './';
$subpath = $LC_CATEGORIES[$category] ."/$domain.mo";
/* Figure out all possible locale names and start with the most
specific ones. I.e. for sr_CS.UTF-8@latin, look through all of
sr_CS.UTF-8@latin, sr_CS@latin, sr@latin, sr_CS.UTF-8, sr_CS, sr.
*/
$locale_names = array();
if (preg_match("/([a-z]{2,3})" // language code
."(_([A-Z]{2}))?" // country code
."(\.([-A-Za-z0-9_]))?" // charset
."(@([-A-Za-z0-9_]+))?/", // @ modifier
$locale, $matches)) {
$lang = '';
$country = '';
$charset = '';
$modifier = '';
if(isset($matches[1]))
$lang = $matches[1];
if(isset($matches[3]))
$country = $matches[3];
if(isset($matches[5]))
$charset = $matches[5];
if(isset($matches[7]))
$modifier = $matches[7];
if ($modifier) {
$locale_names = array("${lang}_$country.$charset@$modifier",
"${lang}_$country@$modifier",
"$lang@$modifier");
}
array_push($locale_names,
"${lang}_$country.$charset", "${lang}_$country", "$lang");
}
array_push($locale_names, $locale);
$input = null;
foreach ($locale_names as $locale) {
$full_path = $bound_path . $locale . "/" . $subpath;
if (file_exists($full_path)) {
$input = new FileReader($full_path);
break;
}
}
if (!array_key_exists($domain, $text_domains)) {
// Initialize an empty domain object.
$text_domains[$domain] = new domain();
}
$text_domains[$domain]->l10n = new gettext_reader($input,
$enable_cache);
}
return $text_domains[$domain]->l10n;
}
/**
* Returns whether we are using our emulated gettext API or PHP built-in one.
*/
function locale_emulation() {
global $EMULATEGETTEXT;
return $EMULATEGETTEXT;
}
/**
* Checks if the current locale is supported on this system.
*/
function _check_locale() {
global $EMULATEGETTEXT;
return !$EMULATEGETTEXT;
}
/**
* Get the codeset for the given domain.
*/
function _get_codeset($domain=null) {
global $text_domains, $default_domain, $LC_CATEGORIES;
if (!isset($domain)) $domain = $default_domain;
return (isset($text_domains[$domain]->codeset))? $text_domains[$domain]->codeset : ini_get('mbstring.internal_encoding');
}
/**
* Convert the given string to the encoding set by bind_textdomain_codeset.
*/
function _encode($text) {
$source_encoding = mb_detect_encoding($text);
$target_encoding = _get_codeset();
if ($source_encoding != $target_encoding) {
return mb_convert_encoding($text, $target_encoding, $source_encoding);
}
else {
return $text;
}
}
// Custom implementation of the standard gettext related functions
/**
* Sets a requested locale, if needed emulates it.
*/
function _setlocale($category, $locale) {
global $CURRENTLOCALE, $EMULATEGETTEXT;
if ($locale === 0) { // use === to differentiate between string "0"
if ($CURRENTLOCALE != '')
return $CURRENTLOCALE;
else
// obey LANG variable, maybe extend to support all of LC_* vars
// even if we tried to read locale without setting it first
return _setlocale($category, $CURRENTLOCALE);
} else {
$ret = 0;
if (function_exists('setlocale')) // I don't know if this ever happens ;)
$ret = setlocale($category, $locale);
if (($ret and $locale == '') or ($ret == $locale)) {
$EMULATEGETTEXT = 0;
$CURRENTLOCALE = $ret;
} else {
if ($locale == '') // emulate variable support
$CURRENTLOCALE = getenv('LANG');
else
$CURRENTLOCALE = $locale;
$EMULATEGETTEXT = 1;
}
// Allow locale to be changed on the go for one translation domain.
global $text_domains, $default_domain;
unset($text_domains[$default_domain]->l10n);
return $CURRENTLOCALE;
}
}
/**
* Sets the path for a domain.
*/
function _bindtextdomain($domain, $path) {
global $text_domains;
// ensure $path ends with a slash ('/' should work for both, but lets still play nice)
if (substr(php_uname(), 0, 7) == "Windows") {
if ($path[strlen($path)-1] != '\\' and $path[strlen($path)-1] != '/')
$path .= '\\';
} else {
if ($path[strlen($path)-1] != '/')
$path .= '/';
}
if (!array_key_exists($domain, $text_domains)) {
// Initialize an empty domain object.
$text_domains[$domain] = new domain();
}
$text_domains[$domain]->path = $path;
}
/**
* Specify the character encoding in which the messages from the DOMAIN message catalog will be returned.
*/
function _bind_textdomain_codeset($domain, $codeset) {
global $text_domains;
$text_domains[$domain]->codeset = $codeset;
}
/**
* Sets the default domain.
*/
function _textdomain($domain) {
global $default_domain;
$default_domain = $domain;
}
/**
* Lookup a message in the current domain.
*/
function _gettext($msgid) {
$l10n = _get_reader();
//return $l10n->translate($msgid);
return _encode($l10n->translate($msgid));
}
/**
* Alias for gettext.
*/
function __($msgid) {
return _gettext($msgid);
}
/**
* Plural version of gettext.
*/
function _ngettext($single, $plural, $number) {
$l10n = _get_reader();
//return $l10n->ngettext($single, $plural, $number);
return _encode($l10n->ngettext($single, $plural, $number));
}
/**
* Override the current domain.
*/
function _dgettext($domain, $msgid) {
$l10n = _get_reader($domain);
//return $l10n->translate($msgid);
return _encode($l10n->translate($msgid));
}
/**
* Plural version of dgettext.
*/
function _dngettext($domain, $single, $plural, $number) {
$l10n = _get_reader($domain);
//return $l10n->ngettext($single, $plural, $number);
return _encode($l10n->ngettext($single, $plural, $number));
}
/**
* Overrides the domain and category for a single lookup.
*/
function _dcgettext($domain, $msgid, $category) {
$l10n = _get_reader($domain, $category);
//return $l10n->translate($msgid);
return _encode($l10n->translate($msgid));
}
/**
* Plural version of dcgettext.
*/
function _dcngettext($domain, $single, $plural, $number, $category) {
$l10n = _get_reader($domain, $category);
//return $l10n->ngettext($single, $plural, $number);
return _encode($l10n->ngettext($single, $plural, $number));
}
// Wrappers to use if the standard gettext functions are available, but the current locale is not supported by the system.
// Use the standard impl if the current locale is supported, use the custom impl otherwise.
function T_setlocale($category, $locale) {
return _setlocale($category, $locale);
}
function T_bindtextdomain($domain, $path) {
if (_check_locale()) return bindtextdomain($domain, $path);
else return _bindtextdomain($domain, $path);
}
function T_bind_textdomain_codeset($domain, $codeset) {
// bind_textdomain_codeset is available only in PHP 4.2.0+
if (_check_locale() and function_exists('bind_textdomain_codeset')) return bind_textdomain_codeset($domain, $codeset);
else return _bind_textdomain_codeset($domain, $codeset);
}
function T_textdomain($domain) {
if (_check_locale()) return textdomain($domain);
else return _textdomain($domain);
}
function T_gettext($msgid) {
if (_check_locale()) return gettext($msgid);
else return _gettext($msgid);
}
function T_($msgid) {
if (_check_locale()) return _($msgid);
return __($msgid);
}
function T_ngettext($single, $plural, $number) {
if (_check_locale()) return ngettext($single, $plural, $number);
else return _ngettext($single, $plural, $number);
}
function T_dgettext($domain, $msgid) {
if (_check_locale()) return dgettext($domain, $msgid);
else return _dgettext($domain, $msgid);
}
function T_dngettext($domain, $single, $plural, $number) {
if (_check_locale()) return dngettext($domain, $single, $plural, $number);
else return _dngettext($domain, $single, $plural, $number);
}
function T_dcgettext($domain, $msgid, $category) {
if (_check_locale()) return dcgettext($domain, $msgid, $category);
else return _dcgettext($domain, $msgid, $category);
}
function T_dcngettext($domain, $single, $plural, $number, $category) {
if (_check_locale()) return dcngettext($domain, $single, $plural, $number, $category);
else return _dcngettext($domain, $single, $plural, $number, $category);
}
// Wrappers used as a drop in replacement for the standard gettext functions
if (!function_exists('gettext')) {
function bindtextdomain($domain, $path) {
return _bindtextdomain($domain, $path);
}
function bind_textdomain_codeset($domain, $codeset) {
return _bind_textdomain_codeset($domain, $codeset);
}
function textdomain($domain) {
return _textdomain($domain);
}
function gettext($msgid) {
return _gettext($msgid);
}
function _($msgid) {
return __($msgid);
}
function ngettext($single, $plural, $number) {
return _ngettext($single, $plural, $number);
}
function dgettext($domain, $msgid) {
return _dgettext($domain, $msgid);
}
function dngettext($domain, $single, $plural, $number) {
return _dngettext($domain, $single, $plural, $number);
}
function dcgettext($domain, $msgid, $category) {
return _dcgettext($domain, $msgid, $category);
}
function dcngettext($domain, $single, $plural, $number, $category) {
return _dcngettext($domain, $single, $plural, $number, $category);
}
}
?>