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<?php
namespace PhpOffice\PhpSpreadsheet\Calculation\TextData;
use PhpOffice\PhpSpreadsheet\Calculation\ArrayEnabled;
use PhpOffice\PhpSpreadsheet\Calculation\Functions;
use PhpOffice\PhpSpreadsheet\Calculation\Information\ExcelError;
class CharacterConvert
{
use ArrayEnabled;
/**
* CHAR.
*
* @param mixed $character Integer Value to convert to its character representation
* Or can be an array of values
*
* @return array|string The character string
* If an array of values is passed as the argument, then the returned result will also be an array
* with the same dimensions
*/
public static function character($character)
{
if (is_array($character)) {
return self::evaluateSingleArgumentArray([self::class, __FUNCTION__], $character);
}
$character = Helpers::validateInt($character);
$min = Functions::getCompatibilityMode() === Functions::COMPATIBILITY_OPENOFFICE ? 0 : 1;
if ($character < $min || $character > 255) {
return ExcelError::VALUE();
}
$result = iconv('UCS-4LE', 'UTF-8', pack('V', $character));
return ($result === false) ? '' : $result;
}
/**
* CODE.
*
* @param mixed $characters String character to convert to its ASCII value
* Or can be an array of values
*
* @return array|int|string A string if arguments are invalid
* If an array of values is passed as the argument, then the returned result will also be an array
* with the same dimensions
*/
public static function code($characters)
{
if (is_array($characters)) {
return self::evaluateSingleArgumentArray([self::class, __FUNCTION__], $characters);
}
$characters = Helpers::extractString($characters);
if ($characters === '') {
return ExcelError::VALUE();
}
$character = $characters;
if (mb_strlen($characters, 'UTF-8') > 1) {
$character = mb_substr($characters, 0, 1, 'UTF-8');
}
return self::unicodeToOrd($character);
}
private static function unicodeToOrd(string $character): int
{
$retVal = 0;
$iconv = iconv('UTF-8', 'UCS-4LE', $character);
if ($iconv !== false) {
$result = unpack('V', $iconv);
if (is_array($result) && isset($result[1])) {
$retVal = $result[1];
}
}
return $retVal;
}
}
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