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<?php
namespace PhpOffice\PhpSpreadsheet\Calculation\Engineering;
use PhpOffice\PhpSpreadsheet\Calculation\Exception;
use PhpOffice\PhpSpreadsheet\Calculation\Information\ExcelError;
class ConvertBinary extends ConvertBase
{
/**
* toDecimal.
*
* Return a binary value as decimal.
*
* Excel Function:
* BIN2DEC(x)
*
* @param array|string $value The binary number (as a string) that you want to convert. The number
* cannot contain more than 10 characters (10 bits). The most significant
* bit of number is the sign bit. The remaining 9 bits are magnitude bits.
* Negative numbers are represented using two's-complement notation.
* If number is not a valid binary number, or if number contains more than
* 10 characters (10 bits), BIN2DEC returns the #NUM! error value.
* Or can be an array of values
*
* @return array|string Result, or an error
* If an array of numbers is passed as an argument, then the returned result will also be an array
* with the same dimensions
*/
public static function toDecimal($value)
{
if (is_array($value)) {
return self::evaluateSingleArgumentArray([self::class, __FUNCTION__], $value);
}
try {
$value = self::validateValue($value);
$value = self::validateBinary($value);
} catch (Exception $e) {
return $e->getMessage();
}
if (strlen($value) == 10) {
// Two's Complement
$value = substr($value, -9);
return '-' . (512 - bindec($value));
}
return (string) bindec($value);
}
/**
* toHex.
*
* Return a binary value as hex.
*
* Excel Function:
* BIN2HEX(x[,places])
*
* @param array|string $value The binary number (as a string) that you want to convert. The number
* cannot contain more than 10 characters (10 bits). The most significant
* bit of number is the sign bit. The remaining 9 bits are magnitude bits.
* Negative numbers are represented using two's-complement notation.
* If number is not a valid binary number, or if number contains more than
* 10 characters (10 bits), BIN2HEX returns the #NUM! error value.
* Or can be an array of values
* @param array|int $places The number of characters to use. If places is omitted, BIN2HEX uses the
* minimum number of characters necessary. Places is useful for padding the
* return value with leading 0s (zeros).
* If places is not an integer, it is truncated.
* If places is nonnumeric, BIN2HEX returns the #VALUE! error value.
* If places is negative, BIN2HEX returns the #NUM! error value.
* Or can be an array of values
*
* @return array|string Result, or an error
* If an array of numbers is passed as an argument, then the returned result will also be an array
* with the same dimensions
*/
public static function toHex($value, $places = null)
{
if (is_array($value) || is_array($places)) {
return self::evaluateArrayArguments([self::class, __FUNCTION__], $value, $places);
}
try {
$value = self::validateValue($value);
$value = self::validateBinary($value);
$places = self::validatePlaces($places);
} catch (Exception $e) {
return $e->getMessage();
}
if (strlen($value) == 10) {
$high2 = substr($value, 0, 2);
$low8 = substr($value, 2);
$xarr = ['00' => '00000000', '01' => '00000001', '10' => 'FFFFFFFE', '11' => 'FFFFFFFF'];
return $xarr[$high2] . strtoupper(substr('0' . dechex((int) bindec($low8)), -2));
}
$hexVal = (string) strtoupper(dechex((int) bindec($value)));
return self::nbrConversionFormat($hexVal, $places);
}
/**
* toOctal.
*
* Return a binary value as octal.
*
* Excel Function:
* BIN2OCT(x[,places])
*
* @param array|string $value The binary number (as a string) that you want to convert. The number
* cannot contain more than 10 characters (10 bits). The most significant
* bit of number is the sign bit. The remaining 9 bits are magnitude bits.
* Negative numbers are represented using two's-complement notation.
* If number is not a valid binary number, or if number contains more than
* 10 characters (10 bits), BIN2OCT returns the #NUM! error value.
* Or can be an array of values
* @param array|int $places The number of characters to use. If places is omitted, BIN2OCT uses the
* minimum number of characters necessary. Places is useful for padding the
* return value with leading 0s (zeros).
* If places is not an integer, it is truncated.
* If places is nonnumeric, BIN2OCT returns the #VALUE! error value.
* If places is negative, BIN2OCT returns the #NUM! error value.
* Or can be an array of values
*
* @return array|string Result, or an error
* If an array of numbers is passed as an argument, then the returned result will also be an array
* with the same dimensions
*/
public static function toOctal($value, $places = null)
{
if (is_array($value) || is_array($places)) {
return self::evaluateArrayArguments([self::class, __FUNCTION__], $value, $places);
}
try {
$value = self::validateValue($value);
$value = self::validateBinary($value);
$places = self::validatePlaces($places);
} catch (Exception $e) {
return $e->getMessage();
}
if (strlen($value) == 10 && substr($value, 0, 1) === '1') { // Two's Complement
return str_repeat('7', 6) . strtoupper(decoct((int) bindec("11$value")));
}
$octVal = (string) decoct((int) bindec($value));
return self::nbrConversionFormat($octVal, $places);
}
protected static function validateBinary(string $value): string
{
if ((strlen($value) > preg_match_all('/[01]/', $value)) || (strlen($value) > 10)) {
throw new Exception(ExcelError::NAN());
}
return $value;
}
}
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