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<?php
namespace PhpOffice\PhpSpreadsheet\Calculation\Engineering;
use PhpOffice\PhpSpreadsheet\Calculation\Exception;
use PhpOffice\PhpSpreadsheet\Calculation\Functions;
class ConvertOctal extends ConvertBase
{
/**
* toBinary.
*
* Return an octal value as binary.
*
* Excel Function:
* OCT2BIN(x[,places])
*
* @param string $value The octal number you want to convert. Number may not
* contain more than 10 characters. The most significant
* bit of number is the sign bit. The remaining 29 bits
* are magnitude bits. Negative numbers are represented
* using two's-complement notation.
* If number is negative, OCT2BIN ignores places and returns
* a 10-character binary number.
* If number is negative, it cannot be less than 7777777000,
* and if number is positive, it cannot be greater than 777.
* If number is not a valid octal number, OCT2BIN returns
* the #NUM! error value.
* If OCT2BIN requires more than places characters, it
* returns the #NUM! error value.
* @param int $places The number of characters to use. If places is omitted,
* OCT2BIN uses the minimum number of characters necessary.
* Places is useful for padding the return value with
* leading 0s (zeros).
* If places is not an integer, it is truncated.
* If places is nonnumeric, OCT2BIN returns the #VALUE!
* error value.
* If places is negative, OCT2BIN returns the #NUM! error
* value.
*/
public static function toBinary($value, $places = null): string
{
try {
$value = self::validateValue(Functions::flattenSingleValue($value));
$value = self::validateOctal($value);
$places = self::validatePlaces(Functions::flattenSingleValue($places));
} catch (Exception $e) {
return $e->getMessage();
}
return ConvertDecimal::toBinary(self::toDecimal($value), $places);
}
/**
* toDecimal.
*
* Return an octal value as decimal.
*
* Excel Function:
* OCT2DEC(x)
*
* @param string $value The octal number you want to convert. Number may not contain
* more than 10 octal characters (30 bits). The most significant
* bit of number is the sign bit. The remaining 29 bits are
* magnitude bits. Negative numbers are represented using
* two's-complement notation.
* If number is not a valid octal number, OCT2DEC returns the
* #NUM! error value.
*/
public static function toDecimal($value): string
{
try {
$value = self::validateValue(Functions::flattenSingleValue($value));
$value = self::validateOctal($value);
} catch (Exception $e) {
return $e->getMessage();
}
$binX = '';
foreach (str_split($value) as $char) {
$binX .= str_pad(decbin((int) $char), 3, '0', STR_PAD_LEFT);
}
if (strlen($binX) == 30 && $binX[0] == '1') {
for ($i = 0; $i < 30; ++$i) {
$binX[$i] = ($binX[$i] == '1' ? '0' : '1');
}
return (string) ((bindec($binX) + 1) * -1);
}
return (string) bindec($binX);
}
/**
* toHex.
*
* Return an octal value as hex.
*
* Excel Function:
* OCT2HEX(x[,places])
*
* @param string $value The octal number you want to convert. Number may not contain
* more than 10 octal characters (30 bits). The most significant
* bit of number is the sign bit. The remaining 29 bits are
* magnitude bits. Negative numbers are represented using
* two's-complement notation.
* If number is negative, OCT2HEX ignores places and returns a
* 10-character hexadecimal number.
* If number is not a valid octal number, OCT2HEX returns the
* #NUM! error value.
* If OCT2HEX requires more than places characters, it returns
* the #NUM! error value.
* @param int $places The number of characters to use. If places is omitted, OCT2HEX
* uses the minimum number of characters necessary. Places is useful
* for padding the return value with leading 0s (zeros).
* If places is not an integer, it is truncated.
* If places is nonnumeric, OCT2HEX returns the #VALUE! error value.
* If places is negative, OCT2HEX returns the #NUM! error value.
*/
public static function toHex($value, $places = null): string
{
try {
$value = self::validateValue(Functions::flattenSingleValue($value));
$value = self::validateOctal($value);
$places = self::validatePlaces(Functions::flattenSingleValue($places));
} catch (Exception $e) {
return $e->getMessage();
}
$hexVal = strtoupper(dechex((int) self::toDecimal($value)));
$hexVal = (PHP_INT_SIZE === 4 && strlen($value) === 10 && $value[0] >= '4') ? "FF$hexVal" : $hexVal;
return self::nbrConversionFormat($hexVal, $places);
}
protected static function validateOctal(string $value): string
{
$numDigits = (int) preg_match_all('/[01234567]/', $value);
if (strlen($value) > $numDigits || $numDigits > 10) {
throw new Exception(Functions::NAN());
}
return $value;
}
}