/**
* Sets specified internal encoding configuration variables within the PHP iconv extension.
* @param string $type The parameter $type could be: 'iconv_internal_encoding', 'iconv_input_encoding', or 'iconv_output_encoding'.
* @param string $encoding (optional) The desired encoding to be set.
* @return bool Returns TRUE on success, FALSE on error.
* Note: This function is used in the global initialization script for setting these three internal encodings to the platform's character set.
* @link http://php.net/manual/en/function.iconv-set-encoding
*/
function _api_iconv_set_encoding($type, $encoding = null)
{
static $iconv_internal_encoding = null;
static $iconv_input_encoding = null;
static $iconv_output_encoding = null;
if (!ICONV_INSTALLED) {
return false;
}
switch ($type) {
case 'iconv_internal_encoding':
if (empty($encoding)) {
if (is_null($iconv_internal_encoding)) {
$iconv_internal_encoding = @iconv_get_encoding($type);
}
return $iconv_internal_encoding;
}
if (_api_iconv_supports($encoding)) {
if (@iconv_set_encoding($type, $encoding)) {
$iconv_internal_encoding = $encoding;
return true;
}
return false;
}
return false;
case 'iconv_input_encoding':
if (empty($encoding)) {
if (is_null($iconv_input_encoding)) {
$iconv_input_encoding = @iconv_get_encoding($type);
}
return $iconv_input_encoding;
}
if (_api_iconv_supports($encoding)) {
if (@iconv_set_encoding($type, $encoding)) {
$iconv_input_encoding = $encoding;
return true;
}
return false;
}
return false;
case 'iconv_output_encoding':
if (empty($encoding)) {
if (is_null($iconv_output_encoding)) {
$iconv_output_encoding = @iconv_get_encoding($type);
}
return $iconv_output_encoding;
}
if (_api_iconv_supports($encoding)) {
if (@iconv_set_encoding($type, $encoding)) {
$iconv_output_encoding = $encoding;
return true;
}
return false;
}
return false;
}
return false;
}
/**
* Checks whether a specified encoding is supported by this API.
* @param string $encoding The specified encoding.
* @return bool Returns TRUE when the specified encoding is supported, FALSE othewise.
*/
function api_is_encoding_supported($encoding)
{
static $supported = array();
if (!isset($supported[$encoding])) {
$supported[$encoding] = _api_mb_supports($encoding) || _api_iconv_supports($encoding) || _api_convert_encoding_supports($encoding);
}
return $supported[$encoding];
}
