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391 lines
14 KiB
391 lines
14 KiB
<?php
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namespace PhpOffice\PhpSpreadsheet\Calculation;
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class Logical
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{
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/**
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* TRUE.
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*
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* Returns the boolean TRUE.
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*
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* Excel Function:
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* =TRUE()
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*
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* @return bool True
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*/
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public static function true()
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{
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return true;
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}
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/**
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* FALSE.
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*
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* Returns the boolean FALSE.
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*
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* Excel Function:
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* =FALSE()
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*
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* @return bool False
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*/
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public static function false()
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{
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return false;
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}
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private static function countTrueValues(array $args)
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{
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$returnValue = 0;
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foreach ($args as $arg) {
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// Is it a boolean value?
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if (is_bool($arg)) {
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$returnValue += $arg;
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} elseif ((is_numeric($arg)) && (!is_string($arg))) {
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$returnValue += ((int) $arg != 0);
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} elseif (is_string($arg)) {
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$arg = strtoupper($arg);
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if (($arg == 'TRUE') || ($arg == Calculation::getTRUE())) {
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$arg = true;
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} elseif (($arg == 'FALSE') || ($arg == Calculation::getFALSE())) {
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$arg = false;
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} else {
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return Functions::VALUE();
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}
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$returnValue += ($arg != 0);
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}
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}
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return $returnValue;
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}
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/**
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* LOGICAL_AND.
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*
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* Returns boolean TRUE if all its arguments are TRUE; returns FALSE if one or more argument is FALSE.
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*
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* Excel Function:
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* =AND(logical1[,logical2[, ...]])
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*
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* The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays
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* or references that contain logical values.
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*
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* Boolean arguments are treated as True or False as appropriate
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* Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
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* If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
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* the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
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*
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* @param mixed ...$args Data values
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*
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* @return bool|string the logical AND of the arguments
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*/
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public static function logicalAnd(...$args)
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{
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$args = Functions::flattenArray($args);
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if (count($args) == 0) {
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return Functions::VALUE();
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}
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$args = array_filter($args, function ($value) {
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return $value !== null || (is_string($value) && trim($value) == '');
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});
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$argCount = count($args);
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$returnValue = self::countTrueValues($args);
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if (is_string($returnValue)) {
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return $returnValue;
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}
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return ($returnValue > 0) && ($returnValue == $argCount);
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}
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/**
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* LOGICAL_OR.
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*
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* Returns boolean TRUE if any argument is TRUE; returns FALSE if all arguments are FALSE.
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*
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* Excel Function:
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* =OR(logical1[,logical2[, ...]])
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*
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* The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays
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* or references that contain logical values.
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*
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* Boolean arguments are treated as True or False as appropriate
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* Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
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* If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
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* the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
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*
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* @param mixed $args Data values
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*
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* @return bool|string the logical OR of the arguments
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*/
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public static function logicalOr(...$args)
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{
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$args = Functions::flattenArray($args);
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if (count($args) == 0) {
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return Functions::VALUE();
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}
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$args = array_filter($args, function ($value) {
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return $value !== null || (is_string($value) && trim($value) == '');
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});
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$returnValue = self::countTrueValues($args);
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if (is_string($returnValue)) {
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return $returnValue;
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}
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return $returnValue > 0;
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}
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/**
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* LOGICAL_XOR.
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*
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* Returns the Exclusive Or logical operation for one or more supplied conditions.
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* i.e. the Xor function returns TRUE if an odd number of the supplied conditions evaluate to TRUE, and FALSE otherwise.
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*
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* Excel Function:
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* =XOR(logical1[,logical2[, ...]])
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*
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* The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays
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* or references that contain logical values.
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*
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* Boolean arguments are treated as True or False as appropriate
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* Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
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* If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
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* the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
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*
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* @param mixed $args Data values
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*
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* @return bool|string the logical XOR of the arguments
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*/
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public static function logicalXor(...$args)
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{
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$args = Functions::flattenArray($args);
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if (count($args) == 0) {
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return Functions::VALUE();
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}
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$args = array_filter($args, function ($value) {
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return $value !== null || (is_string($value) && trim($value) == '');
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});
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$returnValue = self::countTrueValues($args);
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if (is_string($returnValue)) {
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return $returnValue;
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}
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return $returnValue % 2 == 1;
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}
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/**
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* NOT.
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*
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* Returns the boolean inverse of the argument.
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*
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* Excel Function:
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* =NOT(logical)
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*
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* The argument must evaluate to a logical value such as TRUE or FALSE
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*
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* Boolean arguments are treated as True or False as appropriate
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* Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
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* If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
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* the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
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*
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* @param mixed $logical A value or expression that can be evaluated to TRUE or FALSE
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*
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* @return bool|string the boolean inverse of the argument
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*/
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public static function NOT($logical = false)
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{
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$logical = Functions::flattenSingleValue($logical);
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if (is_string($logical)) {
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$logical = strtoupper($logical);
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if (($logical == 'TRUE') || ($logical == Calculation::getTRUE())) {
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return false;
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} elseif (($logical == 'FALSE') || ($logical == Calculation::getFALSE())) {
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return true;
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}
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return Functions::VALUE();
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}
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return !$logical;
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}
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/**
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* STATEMENT_IF.
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*
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* Returns one value if a condition you specify evaluates to TRUE and another value if it evaluates to FALSE.
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*
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* Excel Function:
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* =IF(condition[,returnIfTrue[,returnIfFalse]])
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*
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* Condition is any value or expression that can be evaluated to TRUE or FALSE.
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* For example, A10=100 is a logical expression; if the value in cell A10 is equal to 100,
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* the expression evaluates to TRUE. Otherwise, the expression evaluates to FALSE.
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* This argument can use any comparison calculation operator.
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* ReturnIfTrue is the value that is returned if condition evaluates to TRUE.
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* For example, if this argument is the text string "Within budget" and the condition argument evaluates to TRUE,
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* then the IF function returns the text "Within budget"
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* If condition is TRUE and ReturnIfTrue is blank, this argument returns 0 (zero). To display the word TRUE, use
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* the logical value TRUE for this argument.
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* ReturnIfTrue can be another formula.
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* ReturnIfFalse is the value that is returned if condition evaluates to FALSE.
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* For example, if this argument is the text string "Over budget" and the condition argument evaluates to FALSE,
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* then the IF function returns the text "Over budget".
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* If condition is FALSE and ReturnIfFalse is omitted, then the logical value FALSE is returned.
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* If condition is FALSE and ReturnIfFalse is blank, then the value 0 (zero) is returned.
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* ReturnIfFalse can be another formula.
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*
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* @param mixed $condition Condition to evaluate
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* @param mixed $returnIfTrue Value to return when condition is true
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* @param mixed $returnIfFalse Optional value to return when condition is false
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*
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* @return mixed The value of returnIfTrue or returnIfFalse determined by condition
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*/
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public static function statementIf($condition = true, $returnIfTrue = 0, $returnIfFalse = false)
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{
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if (Functions::isError($condition)) {
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return $condition;
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}
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$condition = ($condition === null) ? true : (bool) Functions::flattenSingleValue($condition);
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$returnIfTrue = ($returnIfTrue === null) ? 0 : Functions::flattenSingleValue($returnIfTrue);
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$returnIfFalse = ($returnIfFalse === null) ? false : Functions::flattenSingleValue($returnIfFalse);
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return ($condition) ? $returnIfTrue : $returnIfFalse;
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}
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/**
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* STATEMENT_SWITCH.
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*
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* Returns corresponding with first match (any data type such as a string, numeric, date, etc).
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*
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* Excel Function:
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* =SWITCH (expression, value1, result1, value2, result2, ... value_n, result_n [, default])
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*
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* Expression
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* The expression to compare to a list of values.
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* value1, value2, ... value_n
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* A list of values that are compared to expression. The SWITCH function is looking for the first value that matches the expression.
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* result1, result2, ... result_n
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* A list of results. The SWITCH function returns the corresponding result when a value matches expression.
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* default
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* Optional. It is the default to return if expression does not match any of the values (value1, value2, ... value_n).
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*
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* @param mixed $arguments Statement arguments
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*
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* @return mixed The value of matched expression
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*/
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public static function statementSwitch(...$arguments)
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{
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$result = Functions::VALUE();
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if (count($arguments) > 0) {
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$targetValue = Functions::flattenSingleValue($arguments[0]);
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$argc = count($arguments) - 1;
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$switchCount = floor($argc / 2);
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$switchSatisfied = false;
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$hasDefaultClause = $argc % 2 !== 0;
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$defaultClause = $argc % 2 === 0 ? null : $arguments[count($arguments) - 1];
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if ($switchCount) {
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for ($index = 0; $index < $switchCount; ++$index) {
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if ($targetValue == $arguments[$index * 2 + 1]) {
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$result = $arguments[$index * 2 + 2];
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$switchSatisfied = true;
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break;
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}
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}
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}
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if (!$switchSatisfied) {
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$result = $hasDefaultClause ? $defaultClause : Functions::NA();
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}
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}
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return $result;
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}
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/**
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* IFERROR.
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*
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* Excel Function:
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* =IFERROR(testValue,errorpart)
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*
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* @param mixed $testValue Value to check, is also the value returned when no error
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* @param mixed $errorpart Value to return when testValue is an error condition
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*
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* @return mixed The value of errorpart or testValue determined by error condition
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*/
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public static function IFERROR($testValue = '', $errorpart = '')
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{
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$testValue = ($testValue === null) ? '' : Functions::flattenSingleValue($testValue);
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$errorpart = ($errorpart === null) ? '' : Functions::flattenSingleValue($errorpart);
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return self::statementIf(Functions::isError($testValue), $errorpart, $testValue);
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}
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/**
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* IFNA.
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*
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* Excel Function:
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* =IFNA(testValue,napart)
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*
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* @param mixed $testValue Value to check, is also the value returned when not an NA
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* @param mixed $napart Value to return when testValue is an NA condition
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*
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* @return mixed The value of errorpart or testValue determined by error condition
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*/
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public static function IFNA($testValue = '', $napart = '')
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{
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$testValue = ($testValue === null) ? '' : Functions::flattenSingleValue($testValue);
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$napart = ($napart === null) ? '' : Functions::flattenSingleValue($napart);
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return self::statementIf(Functions::isNa($testValue), $napart, $testValue);
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}
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/**
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* IFS.
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*
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* Excel Function:
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* =IFS(testValue1;returnIfTrue1;testValue2;returnIfTrue2;...;testValue_n;returnIfTrue_n)
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*
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* testValue1 ... testValue_n
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* Conditions to Evaluate
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* returnIfTrue1 ... returnIfTrue_n
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* Value returned if corresponding testValue (nth) was true
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*
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* @param mixed ...$arguments Statement arguments
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*
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* @return mixed|string The value of returnIfTrue_n, if testValue_n was true. #N/A if none of testValues was true
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*/
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public static function IFS(...$arguments)
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{
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if (count($arguments) % 2 != 0) {
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return Functions::NA();
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}
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// We use instance of Exception as a falseValue in order to prevent string collision with value in cell
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$falseValueException = new Exception();
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for ($i = 0; $i < count($arguments); $i += 2) {
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$testValue = ($arguments[$i] === null) ? '' : Functions::flattenSingleValue($arguments[$i]);
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$returnIfTrue = ($arguments[$i + 1] === null) ? '' : Functions::flattenSingleValue($arguments[$i + 1]);
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$result = self::statementIf($testValue, $returnIfTrue, $falseValueException);
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if ($result !== $falseValueException) {
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return $result;
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}
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}
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return Functions::NA();
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}
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}
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