<?php
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namespace PhpOffice\PhpSpreadsheet\Calculation\Engineering;
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use PhpOffice\PhpSpreadsheet\Calculation\Exception;
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use PhpOffice\PhpSpreadsheet\Calculation\Information\ExcelError;
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class ConvertHex extends ConvertBase
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{
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/**
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* toBinary.
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*
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* Return a hex value as binary.
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*
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* Excel Function:
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* HEX2BIN(x[,places])
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*
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* @param array|bool|float|string $value The hexadecimal number you want to convert.
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* Number cannot contain more than 10 characters.
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* The most significant bit of number is the sign bit (40th bit from the right).
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* The remaining 9 bits are magnitude bits.
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* Negative numbers are represented using two's-complement notation.
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* If number is negative, HEX2BIN ignores places and returns a 10-character binary number.
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* If number is negative, it cannot be less than FFFFFFFE00,
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* and if number is positive, it cannot be greater than 1FF.
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* If number is not a valid hexadecimal number, HEX2BIN returns the #NUM! error value.
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* If HEX2BIN requires more than places characters, it returns the #NUM! error value.
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* Or can be an array of values
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* @param array|int $places The number of characters to use. If places is omitted,
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* HEX2BIN uses the minimum number of characters necessary. Places
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* is useful for padding the return value with leading 0s (zeros).
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* If places is not an integer, it is truncated.
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* If places is nonnumeric, HEX2BIN returns the #VALUE! error value.
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* If places is negative, HEX2BIN returns the #NUM! error value.
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* Or can be an array of values
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*
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* @return array|string Result, or an error
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* If an array of numbers is passed as an argument, then the returned result will also be an array
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* with the same dimensions
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*/
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public static function toBinary($value, $places = null): array|string
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{
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if (is_array($value) || is_array($places)) {
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return self::evaluateArrayArguments([self::class, __FUNCTION__], $value, $places);
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}
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try {
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$value = self::validateValue($value);
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$value = self::validateHex($value);
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$places = self::validatePlaces($places);
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} catch (Exception $e) {
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return $e->getMessage();
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}
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$dec = self::toDecimal($value);
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return ConvertDecimal::toBinary($dec, $places);
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}
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/**
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* toDecimal.
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*
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* Return a hex value as decimal.
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*
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* Excel Function:
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* HEX2DEC(x)
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*
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* @param array|bool|float|int|string $value The hexadecimal number you want to convert. This number cannot
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* contain more than 10 characters (40 bits). The most significant
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* bit of number is the sign bit. The remaining 39 bits are magnitude
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* bits. Negative numbers are represented using two's-complement
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* notation.
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* If number is not a valid hexadecimal number, HEX2DEC returns the
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* #NUM! error value.
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* Or can be an array of values
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*
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* @return array|string Result, or an error
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* If an array of numbers is passed as an argument, then the returned result will also be an array
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* with the same dimensions
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*/
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public static function toDecimal($value)
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{
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if (is_array($value)) {
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return self::evaluateSingleArgumentArray([self::class, __FUNCTION__], $value);
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}
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try {
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$value = self::validateValue($value);
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$value = self::validateHex($value);
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} catch (Exception $e) {
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return $e->getMessage();
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}
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if (strlen($value) > 10) {
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return ExcelError::NAN();
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}
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$binX = '';
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foreach (str_split($value) as $char) {
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$binX .= str_pad(base_convert($char, 16, 2), 4, '0', STR_PAD_LEFT);
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}
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if (strlen($binX) == 40 && $binX[0] == '1') {
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for ($i = 0; $i < 40; ++$i) {
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$binX[$i] = ($binX[$i] == '1' ? '0' : '1');
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}
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return (string) ((bindec($binX) + 1) * -1);
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}
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return (string) bindec($binX);
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}
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/**
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* toOctal.
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*
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* Return a hex value as octal.
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*
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* Excel Function:
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* HEX2OCT(x[,places])
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*
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* @param array|bool|float|int|string $value The hexadecimal number you want to convert. Number cannot
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* contain more than 10 characters. The most significant bit of
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* number is the sign bit. The remaining 39 bits are magnitude
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* bits. Negative numbers are represented using two's-complement
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* notation.
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* If number is negative, HEX2OCT ignores places and returns a
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* 10-character octal number.
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* If number is negative, it cannot be less than FFE0000000, and
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* if number is positive, it cannot be greater than 1FFFFFFF.
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* If number is not a valid hexadecimal number, HEX2OCT returns
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* the #NUM! error value.
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* If HEX2OCT requires more than places characters, it returns
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* the #NUM! error value.
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* Or can be an array of values
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* @param array|int $places The number of characters to use. If places is omitted, HEX2OCT
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* uses the minimum number of characters necessary. Places is
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* useful for padding the return value with leading 0s (zeros).
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* If places is not an integer, it is truncated.
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* If places is nonnumeric, HEX2OCT returns the #VALUE! error
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* value.
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* If places is negative, HEX2OCT returns the #NUM! error value.
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* Or can be an array of values
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*
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* @return array|string Result, or an error
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* If an array of numbers is passed as an argument, then the returned result will also be an array
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* with the same dimensions
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*/
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public static function toOctal($value, $places = null): array|string
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{
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if (is_array($value) || is_array($places)) {
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return self::evaluateArrayArguments([self::class, __FUNCTION__], $value, $places);
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}
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try {
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$value = self::validateValue($value);
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$value = self::validateHex($value);
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$places = self::validatePlaces($places);
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} catch (Exception $e) {
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return $e->getMessage();
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}
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$decimal = self::toDecimal($value);
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return ConvertDecimal::toOctal($decimal, $places);
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}
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protected static function validateHex(string $value): string
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{
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if (strlen($value) > preg_match_all('/[0123456789ABCDEF]/', $value)) {
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throw new Exception(ExcelError::NAN());
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}
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return $value;
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}
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}
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