silverstripe-framework/core/i18n.php

235 lines
7.9 KiB
PHP
Executable File

<?php
/**
* Silverstripe i18n API
*
* @author Bernat Foj Capell <bernat@silverstripe.com>
*/
class i18n extends Controller {
/**
* This static variable is used to store the current defined locale. Default value is 'en_US'
*/
static $currentlocale = 'en_US';
/**
* This is the main method to build the master string tables with the original strings.
* It will search for existent modules that use the i18n feature, parse the _() calls
* and write the resultant files in the lang folder of each module.
*/
static function text_collector() {
if (!Permission::check("ADMIN")) die("You must be an admin to enable text collector mode");
echo "Collecting text...<br /><br />";
//Calculate base directory
$baseDir = Director::baseFolder();
//Search for and process existent modules, or use the passed one instead
if (!isset($_GET['module'])) {
$topLevel = scandir($baseDir);
foreach($topLevel as $module) {
i18n::process_module($baseDir, $module);
}
} else {
i18n::process_module($baseDir, $_GET['module']);
}
echo "Done!";
}
/**
* Searches for all the files in a given module
*
* @param string $baseDir Silverstripe's base directory
* @param string $module Module's name
*/
private static function process_module($baseDir, $module) {
if(is_dir("$baseDir/$module") && !in_array($module, array('sapphire','jsparty','assets')) && substr($module,0,1) != '.') {
i18n::get_files_rec("$baseDir/$module/code", $fileList);
$mst = '';
foreach($fileList as $file) {
$mst .= i18n::report_calls_code($file);
}
$fileList = NULL;
i18n::get_files_rec("$baseDir/$module/templates", $fileList);
foreach($fileList as $index => $file) {
$mst .= i18n::report_calls_tpl($index, $file);
}
if ($mst) {
// Create folder for lang files
$langFolder = $baseDir . '/' . $module . '/lang';
if(!file_exists($baseDir. '/' . $module . '/lang')) {
mkdir($langFolder);
}
// Open the English file and write the Master String Table
if($fh = fopen($langFolder . '/en_US.php', "w")) {
fwrite($fh, "<?php\n\nglobal \$lang;\n\n" . $mst . "\n?>");
fclose($fh);
echo "Created file: $langFolder/en_US.php<br />";
} else {
die("Cannot write language file! Please check permissions of $langFolder/en_US.php");
}
}
}
}
/**
* Helper function that searches for potential files to be parsed
*
* @param string $folder base directory to scan (will scan recursively)
* @param array $fileList Array where potential files will be added to
*/
private static function get_files_rec($folder, &$fileList) {
$items = scandir($folder);
if($items) foreach($items as $item) {
if(substr($item,0,1) == '.') continue;
if(substr($item,-4) == '.php') $fileList[substr($item,0,-4)] = "$folder/$item";
else if(substr($item,-3) == '.ss') $fileList[$item] = "$folder/$item";
else if(is_dir("$folder/$item")) i18n::get_files_rec("$folder/$item", $fileList);
}
}
/**
* Look for calls to the underscore function in php files and build our MST
*
* @param string $file Path to the file to be parsed
* @return string Built Master String Table from this file
*/
private static function report_calls_code($file) {
static $callMap;
$content = file_get_contents($file);
$mst = '';
while (ereg('_t[[:space:]]*\([[:space:]]*("[^,]*"|\\\'[^,]*\\\')[[:space:]]*,[[:space:]]*("([^"]|\\\")*"|\'([^\']|\\\\\')*\')([[:space:]]*,[[:space:]]*[^,)]*)?([[:space:]]*,[[:space:]]*("([^"]|\\\")*"|\'([^\']|\\\\\')*\'))?[[:space:]]*\)', $content, $regs)) {
$entityParts = explode('.',substr($regs[1],1,-1));
$entity = array_pop($entityParts);
$class = implode('.',$entityParts);
if (isset($callMap[$class.'--'.$entity])) echo "Warning! Redeclaring entity $entity in file $file<br>";
if (substr($regs[2],0,1) == '"') $regs[2] = addcslashes($regs[2],'\'');
$mst .= '$lang[\'en_US\'][\'' . $class . '\'][\'' . $entity . '\'] = ';
if ($regs[5]) {
$mst .= "array(\n\t'" . substr($regs[2],1,-1) . "',\n\t" . substr($regs[5],1);
if ($regs[6]) {
if (substr($regs[6],1,1) == '"') $regs[6] = addcslashes($regs[6],'\'');
$mst .= ",\n\t'" . substr($regs[6],2,-1) . '\'';
}
$mst .= "\n);";
} else $mst .= '\'' . substr($regs[2],1,-1) . '\';';
$mst .= "\n";
$content = str_replace($regs[0],"",$content);
$callMap[$class.'--'.$entity] = $regs[2];
}
return $mst;
}
/**
* Look for calls to the underscore function in template files and build our MST
* Template version - no "class" argument
*
* @param string $index Index used to namespace strings
* @param string $file Path to the file to be parsed
* @return string Built Master String Table from this file
*/
private static function report_calls_tpl($index, $file) {
static $callMap;
$content = file_get_contents($file);
$mst = '';
while (ereg('_t[[:space:]]*\([[:space:]]*("[^"]*"|\\\'[^\']*\\\')[[:space:]]*,[[:space:]]*("([^"]|\\\")*"|\'([^\']|\\\\\')*\')([[:space:]]*,[[:space:]]*[^,)]*)?([[:space:]]*,[[:space:]]*("([^"]|\\\")*"|\'([^\']|\\\\\')*\'))?[[:space:]]*\)',$content,$regs)) {
$entityParts = explode('.',substr($regs[1],1,-1));
$entity = array_pop($entityParts);
// Entity redeclaration check
if (isset($callMap[$index.'--'.$entity])) echo "Warning! Redeclaring entity $entity in file $file<br>";
if (substr($regs[2],0,1) == '"') $regs[2] = addcslashes($regs[2],'\'');
$mst .= '$lang[\'en_US\'][\'' . $index . '\'][\'' . $entity . '\'] = ';
if ($regs[5]) {
$mst .= "array(\n\t'" . substr($regs[2],1,-1) . "',\n\t" . substr($regs[5],1);
if ($regs[6]) {
if (substr($regs[6],1,1) == '"') $regs[6] = addcslashes($regs[6],'\'\\');
$mst .= ",\n\t'" . substr($regs[6],2,-1) . '\'';
}
$mst .= "\n);";
} else $mst .= '\'' . substr($regs[2],1,-1) . '\';';
$mst .= "\n";
$content = str_replace($regs[0],"",$content);
$callMap[$index.'--'.$entity] = $regs[3];
}
return $mst;
}
/**
* Set the current locale
* See http://unicode.org/cldr/data/diff/supplemental/languages_and_territories.html for a list of possible locales
*
* @param string $locale Locale to be set
*/
static function set_locale($locale) {
if ($locale) i18n::$currentlocale = $locale;
}
/**
* Get the current locale
*
* @return string Current locale in the system
*/
static function get_locale() {
return i18n::$currentlocale;
}
/**
* Includes all available language files for a certain defined locale
*
* @param string $locale All resources from any module in locale $locale will be loaded
*/
static function include_by_locale($locale) {
if (file_exists($file = Director::getAbsFile("cms/lang/$locale.php"))) include_once($file);
$topLevel = array_diff(scandir(Director::baseFolder()),array('cms'));
foreach($topLevel as $module) {
if (file_exists($file = Director::getAbsFile("$module/lang/$locale.php"))) {
include_once($file);
}
}
}
/**
* Given a class name (a "locale namespace"), will search for its module and, if available,
* will load the resources for the currently defined locale.
* If not available, the original English resource will be loaded instead (to avoid blanks)
*
* @param string $class Resources for this class will be included, according to the set locale.
*/
static function include_by_class($class) {
if (substr($class,-3) == '.ss') {
global $_TEMPLATE_MANIFEST;
$path = current($_TEMPLATE_MANIFEST[substr($class,0,-3)]);
ereg('.*/([^/]+)/templates/',$path,$module);
}
else {
global $_CLASS_MANIFEST;
$path = $_CLASS_MANIFEST[$class];
ereg('.*/([^/]+)/code/',$path,$module);
}
if (file_exists($file = Director::getAbsFile("{$module[1]}/lang/". i18n::get_locale() . '.php'))) {
include_once($file);
} else if (i18n::get_locale() != 'en_US') {
i18n::set_locale('en_US');
i18n::include_by_class($class);
} else {
user_error("Locale file $file should exist", E_USER_WARNING);
}
}
}
?>