/**
* This function reads a Chamilo language file and transforms it into XML,
* then returns the XML string to the caller.
*/
function get_language_file_as_xml($language = 'english')
{
$path = api_get_path(SYS_LANG_PATH) . $language . '/';
if (!is_dir($path) or !is_readable($path)) {
if ($language != 'english') {
return get_language_file_as_xml('english');
} else {
return '';
}
}
//error_log('Analysing path '.$path);
$file = $path . 'videoconf.inc.php';
if (!is_file($file) or !is_readable($file)) {
if ($language != 'english') {
return get_language_file_as_xml('english');
} else {
return '';
}
}
/*
$convert = true;
if(substr($language,-7,7) == 'unicode')
{//do not convert if the language ends with 'unicode', which means it's in UTF-8
$convert=false;
}
$list = file($file);
$xml = '';
foreach ( $list as $line )
{
if(substr($line,0,1)=='$')
{
$items = array();
$match = preg_match('/^\$([^\s]*)\s*=\s*"(.*)";$/',$line,$items);
if($match)
{
//todo: The following conversion should only happen for old language files (encoded in ISO-8859-1).
if($convert)
{
$string = api_convert_encoding($items[2],'UTF-8','ISO-8859-1');
}
else
{
$string = $items[2];
}
$xml .= '<labelfield><labelid>'.$items[1].'</labelid><labelvalue>'.stripslashes($string).'</labelvalue></labelfield>'."\n";
}
}
}
*/
//---------
$non_utf8_encoding = api_get_non_utf8_encoding($language);
$list = file($file);
$xml = '';
foreach ($list as $line) {
if (substr($line, 0, 1) == '$') {
$items = array();
$match = preg_match('/^\\$([^\\s]*)\\s*=\\s*"(.*)";$/', $line, $items);
if ($match) {
$string = $items[2];
if (!api_is_valid_utf8($string)) {
$string = api_html_entity_decode(api_utf8_encode($string, $non_utf8_encoding), ENT_QUOTES, 'UTF-8');
}
$xml .= '<labelfield><labelid>' . $items[1] . '</labelid><labelvalue>' . stripslashes($string) . '</labelvalue></labelfield>' . "\n";
}
}
}
//---------
if (empty($xml) && $language != 'english') {
return get_language_file_as_xml('english');
}
return $xml;
}
/**
* Converts a given string into the system ecoding (or platform character set).
* When $from encoding is omited on UTF-8 platforms then language dependent encoding
* is guessed/assumed. On non-UTF-8 platforms omited $from encoding is assumed as UTF-8.
* When the parameter $check_utf8_validity is true the function checks string's
* UTF-8 validity and decides whether to try to convert it or not.
* This function is useful for problem detection or making workarounds.
* @param string $string The string being converted.
* @param string $from_encoding (optional) The encoding that $string is being converted from. It is guessed when it is omited.
* @param bool $check_utf8_validity (optional) A flag for UTF-8 validity check as condition for making conversion.
* @return string Returns the converted string.
*/
function api_to_system_encoding($string, $from_encoding = null, $check_utf8_validity = false)
{
$system_encoding = api_get_system_encoding();
if (empty($from_encoding)) {
if (api_is_utf8($system_encoding)) {
$from_encoding = api_get_non_utf8_encoding();
} else {
$from_encoding = 'UTF-8';
}
}
if (api_equal_encodings($system_encoding, $from_encoding)) {
return $string;
}
if ($check_utf8_validity) {
if (api_is_utf8($system_encoding)) {
if (api_is_valid_utf8($string)) {
return $string;
}
} elseif (api_is_utf8($from_encoding)) {
if (!api_is_valid_utf8($string)) {
return $string;
}
}
}
return api_convert_encoding($string, $system_encoding, $from_encoding);
}
