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550 lines
18 KiB
550 lines
18 KiB
<?php
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namespace PhpOffice\PhpSpreadsheet\Cell;
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use PhpOffice\PhpSpreadsheet\Exception;
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use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
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/**
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* Helper class to manipulate cell coordinates.
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*
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* Columns indexes and rows are always based on 1, **not** on 0. This match the behavior
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* that Excel users are used to, and also match the Excel functions `COLUMN()` and `ROW()`.
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*/
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abstract class Coordinate
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{
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/**
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* Default range variable constant.
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*
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* @var string
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*/
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const DEFAULT_RANGE = 'A1:A1';
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/**
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* Coordinate from string.
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*
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* @param string $pCoordinateString eg: 'A1'
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*
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* @return string[] Array containing column and row (indexes 0 and 1)
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*/
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public static function coordinateFromString($pCoordinateString)
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{
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if (preg_match('/^([$]?[A-Z]{1,3})([$]?\\d{1,7})$/', $pCoordinateString, $matches)) {
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return [$matches[1], $matches[2]];
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} elseif (self::coordinateIsRange($pCoordinateString)) {
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throw new Exception('Cell coordinate string can not be a range of cells');
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} elseif ($pCoordinateString == '') {
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throw new Exception('Cell coordinate can not be zero-length string');
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}
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throw new Exception('Invalid cell coordinate ' . $pCoordinateString);
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}
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/**
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* Checks if a coordinate represents a range of cells.
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*
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* @param string $coord eg: 'A1' or 'A1:A2' or 'A1:A2,C1:C2'
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*
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* @return bool Whether the coordinate represents a range of cells
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*/
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public static function coordinateIsRange($coord)
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{
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return (strpos($coord, ':') !== false) || (strpos($coord, ',') !== false);
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}
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/**
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* Make string row, column or cell coordinate absolute.
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*
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* @param string $pCoordinateString e.g. 'A' or '1' or 'A1'
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* Note that this value can be a row or column reference as well as a cell reference
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*
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* @return string Absolute coordinate e.g. '$A' or '$1' or '$A$1'
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*/
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public static function absoluteReference($pCoordinateString)
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{
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if (self::coordinateIsRange($pCoordinateString)) {
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throw new Exception('Cell coordinate string can not be a range of cells');
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}
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// Split out any worksheet name from the reference
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[$worksheet, $pCoordinateString] = Worksheet::extractSheetTitle($pCoordinateString, true);
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if ($worksheet > '') {
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$worksheet .= '!';
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}
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// Create absolute coordinate
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if (ctype_digit($pCoordinateString)) {
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return $worksheet . '$' . $pCoordinateString;
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} elseif (ctype_alpha($pCoordinateString)) {
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return $worksheet . '$' . strtoupper($pCoordinateString);
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}
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return $worksheet . self::absoluteCoordinate($pCoordinateString);
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}
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/**
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* Make string coordinate absolute.
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*
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* @param string $pCoordinateString e.g. 'A1'
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*
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* @return string Absolute coordinate e.g. '$A$1'
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*/
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public static function absoluteCoordinate($pCoordinateString)
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{
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if (self::coordinateIsRange($pCoordinateString)) {
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throw new Exception('Cell coordinate string can not be a range of cells');
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}
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// Split out any worksheet name from the coordinate
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[$worksheet, $pCoordinateString] = Worksheet::extractSheetTitle($pCoordinateString, true);
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if ($worksheet > '') {
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$worksheet .= '!';
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}
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// Create absolute coordinate
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[$column, $row] = self::coordinateFromString($pCoordinateString);
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$column = ltrim($column, '$');
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$row = ltrim($row, '$');
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return $worksheet . '$' . $column . '$' . $row;
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}
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/**
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* Split range into coordinate strings.
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*
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* @param string $pRange e.g. 'B4:D9' or 'B4:D9,H2:O11' or 'B4'
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*
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* @return array Array containing one or more arrays containing one or two coordinate strings
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* e.g. ['B4','D9'] or [['B4','D9'], ['H2','O11']]
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* or ['B4']
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*/
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public static function splitRange($pRange)
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{
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// Ensure $pRange is a valid range
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if (empty($pRange)) {
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$pRange = self::DEFAULT_RANGE;
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}
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$exploded = explode(',', $pRange);
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$counter = count($exploded);
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for ($i = 0; $i < $counter; ++$i) {
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$exploded[$i] = explode(':', $exploded[$i]);
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}
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return $exploded;
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}
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/**
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* Build range from coordinate strings.
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*
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* @param array $pRange Array containg one or more arrays containing one or two coordinate strings
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*
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* @return string String representation of $pRange
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*/
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public static function buildRange(array $pRange)
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{
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// Verify range
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if (empty($pRange) || !is_array($pRange[0])) {
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throw new Exception('Range does not contain any information');
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}
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// Build range
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$counter = count($pRange);
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for ($i = 0; $i < $counter; ++$i) {
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$pRange[$i] = implode(':', $pRange[$i]);
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}
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return implode(',', $pRange);
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}
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/**
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* Calculate range boundaries.
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*
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* @param string $pRange Cell range (e.g. A1:A1)
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*
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* @return array Range coordinates [Start Cell, End Cell]
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* where Start Cell and End Cell are arrays (Column Number, Row Number)
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*/
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public static function rangeBoundaries($pRange)
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{
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// Ensure $pRange is a valid range
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if (empty($pRange)) {
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$pRange = self::DEFAULT_RANGE;
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}
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// Uppercase coordinate
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$pRange = strtoupper($pRange);
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// Extract range
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if (strpos($pRange, ':') === false) {
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$rangeA = $rangeB = $pRange;
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} else {
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[$rangeA, $rangeB] = explode(':', $pRange);
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}
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// Calculate range outer borders
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$rangeStart = self::coordinateFromString($rangeA);
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$rangeEnd = self::coordinateFromString($rangeB);
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// Translate column into index
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$rangeStart[0] = self::columnIndexFromString($rangeStart[0]);
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$rangeEnd[0] = self::columnIndexFromString($rangeEnd[0]);
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return [$rangeStart, $rangeEnd];
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}
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/**
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* Calculate range dimension.
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*
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* @param string $pRange Cell range (e.g. A1:A1)
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*
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* @return array Range dimension (width, height)
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*/
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public static function rangeDimension($pRange)
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{
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// Calculate range outer borders
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[$rangeStart, $rangeEnd] = self::rangeBoundaries($pRange);
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return [($rangeEnd[0] - $rangeStart[0] + 1), ($rangeEnd[1] - $rangeStart[1] + 1)];
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}
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/**
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* Calculate range boundaries.
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*
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* @param string $pRange Cell range (e.g. A1:A1)
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*
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* @return array Range coordinates [Start Cell, End Cell]
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* where Start Cell and End Cell are arrays [Column ID, Row Number]
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*/
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public static function getRangeBoundaries($pRange)
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{
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// Ensure $pRange is a valid range
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if (empty($pRange)) {
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$pRange = self::DEFAULT_RANGE;
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}
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// Uppercase coordinate
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$pRange = strtoupper($pRange);
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// Extract range
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if (strpos($pRange, ':') === false) {
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$rangeA = $rangeB = $pRange;
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} else {
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[$rangeA, $rangeB] = explode(':', $pRange);
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}
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return [self::coordinateFromString($rangeA), self::coordinateFromString($rangeB)];
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}
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/**
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* Column index from string.
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*
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* @param string $pString eg 'A'
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*
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* @return int Column index (A = 1)
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*/
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public static function columnIndexFromString($pString)
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{
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// Using a lookup cache adds a slight memory overhead, but boosts speed
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// caching using a static within the method is faster than a class static,
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// though it's additional memory overhead
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static $indexCache = [];
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if (isset($indexCache[$pString])) {
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return $indexCache[$pString];
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}
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// It's surprising how costly the strtoupper() and ord() calls actually are, so we use a lookup array rather than use ord()
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// and make it case insensitive to get rid of the strtoupper() as well. Because it's a static, there's no significant
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// memory overhead either
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static $columnLookup = [
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'A' => 1, 'B' => 2, 'C' => 3, 'D' => 4, 'E' => 5, 'F' => 6, 'G' => 7, 'H' => 8, 'I' => 9, 'J' => 10, 'K' => 11, 'L' => 12, 'M' => 13,
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'N' => 14, 'O' => 15, 'P' => 16, 'Q' => 17, 'R' => 18, 'S' => 19, 'T' => 20, 'U' => 21, 'V' => 22, 'W' => 23, 'X' => 24, 'Y' => 25, 'Z' => 26,
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'a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5, 'f' => 6, 'g' => 7, 'h' => 8, 'i' => 9, 'j' => 10, 'k' => 11, 'l' => 12, 'm' => 13,
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'n' => 14, 'o' => 15, 'p' => 16, 'q' => 17, 'r' => 18, 's' => 19, 't' => 20, 'u' => 21, 'v' => 22, 'w' => 23, 'x' => 24, 'y' => 25, 'z' => 26,
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];
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// We also use the language construct isset() rather than the more costly strlen() function to match the length of $pString
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// for improved performance
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if (isset($pString[0])) {
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if (!isset($pString[1])) {
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$indexCache[$pString] = $columnLookup[$pString];
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return $indexCache[$pString];
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} elseif (!isset($pString[2])) {
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$indexCache[$pString] = $columnLookup[$pString[0]] * 26 + $columnLookup[$pString[1]];
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return $indexCache[$pString];
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} elseif (!isset($pString[3])) {
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$indexCache[$pString] = $columnLookup[$pString[0]] * 676 + $columnLookup[$pString[1]] * 26 + $columnLookup[$pString[2]];
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return $indexCache[$pString];
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}
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}
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throw new Exception('Column string index can not be ' . ((isset($pString[0])) ? 'longer than 3 characters' : 'empty'));
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}
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/**
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* String from column index.
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*
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* @param int $columnIndex Column index (A = 1)
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*
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* @return string
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*/
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public static function stringFromColumnIndex($columnIndex)
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{
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static $indexCache = [];
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if (!isset($indexCache[$columnIndex])) {
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$indexValue = $columnIndex;
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$base26 = null;
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do {
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$characterValue = ($indexValue % 26) ?: 26;
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$indexValue = ($indexValue - $characterValue) / 26;
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$base26 = chr($characterValue + 64) . ($base26 ?: '');
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} while ($indexValue > 0);
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$indexCache[$columnIndex] = $base26;
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}
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return $indexCache[$columnIndex];
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}
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/**
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* Extract all cell references in range, which may be comprised of multiple cell ranges.
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*
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* @param string $cellRange Range: e.g. 'A1' or 'A1:C10' or 'A1:E10,A20:E25' or 'A1:E5 C3:G7' or 'A1:C1,A3:C3 B1:C3'
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*
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* @return array Array containing single cell references
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*/
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public static function extractAllCellReferencesInRange($cellRange): array
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{
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[$ranges, $operators] = self::getCellBlocksFromRangeString($cellRange);
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$cells = [];
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foreach ($ranges as $range) {
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$cells[] = self::getReferencesForCellBlock($range);
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}
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$cells = self::processRangeSetOperators($operators, $cells);
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if (empty($cells)) {
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return [];
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}
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$cellList = array_merge(...$cells);
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$cellList = self::sortCellReferenceArray($cellList);
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return $cellList;
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}
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private static function processRangeSetOperators(array $operators, array $cells): array
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{
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for ($offset = 0; $offset < count($operators); ++$offset) {
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$operator = $operators[$offset];
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if ($operator !== ' ') {
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continue;
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}
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$cells[$offset] = array_intersect($cells[$offset], $cells[$offset + 1]);
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unset($operators[$offset], $cells[$offset + 1]);
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$operators = array_values($operators);
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$cells = array_values($cells);
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--$offset;
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}
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return $cells;
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}
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private static function sortCellReferenceArray(array $cellList): array
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{
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// Sort the result by column and row
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$sortKeys = [];
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foreach ($cellList as $coord) {
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[$column, $row] = sscanf($coord, '%[A-Z]%d');
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$sortKeys[sprintf('%3s%09d', $column, $row)] = $coord;
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}
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ksort($sortKeys);
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return array_values($sortKeys);
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}
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/**
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* Get all cell references for an individual cell block.
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*
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* @param string $cellBlock A cell range e.g. A4:B5
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*
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* @return array All individual cells in that range
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*/
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private static function getReferencesForCellBlock($cellBlock)
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{
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$returnValue = [];
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// Single cell?
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if (!self::coordinateIsRange($cellBlock)) {
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return (array) $cellBlock;
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}
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// Range...
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$ranges = self::splitRange($cellBlock);
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foreach ($ranges as $range) {
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// Single cell?
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if (!isset($range[1])) {
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$returnValue[] = $range[0];
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continue;
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}
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// Range...
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[$rangeStart, $rangeEnd] = $range;
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[$startColumn, $startRow] = self::coordinateFromString($rangeStart);
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[$endColumn, $endRow] = self::coordinateFromString($rangeEnd);
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$startColumnIndex = self::columnIndexFromString($startColumn);
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$endColumnIndex = self::columnIndexFromString($endColumn);
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++$endColumnIndex;
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// Current data
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$currentColumnIndex = $startColumnIndex;
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$currentRow = $startRow;
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self::validateRange($cellBlock, $startColumnIndex, $endColumnIndex, $currentRow, $endRow);
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// Loop cells
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while ($currentColumnIndex < $endColumnIndex) {
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while ($currentRow <= $endRow) {
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$returnValue[] = self::stringFromColumnIndex($currentColumnIndex) . $currentRow;
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++$currentRow;
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}
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++$currentColumnIndex;
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$currentRow = $startRow;
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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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* Convert an associative array of single cell coordinates to values to an associative array
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* of cell ranges to values. Only adjacent cell coordinates with the same
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* value will be merged. If the value is an object, it must implement the method getHashCode().
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*
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* For example, this function converts:
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*
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* [ 'A1' => 'x', 'A2' => 'x', 'A3' => 'x', 'A4' => 'y' ]
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*
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* to:
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*
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* [ 'A1:A3' => 'x', 'A4' => 'y' ]
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*
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* @param array $pCoordCollection associative array mapping coordinates to values
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*
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* @return array associative array mapping coordinate ranges to valuea
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*/
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public static function mergeRangesInCollection(array $pCoordCollection)
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{
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$hashedValues = [];
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$mergedCoordCollection = [];
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foreach ($pCoordCollection as $coord => $value) {
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if (self::coordinateIsRange($coord)) {
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$mergedCoordCollection[$coord] = $value;
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continue;
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}
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[$column, $row] = self::coordinateFromString($coord);
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$row = (int) (ltrim($row, '$'));
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$hashCode = $column . '-' . (is_object($value) ? $value->getHashCode() : $value);
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if (!isset($hashedValues[$hashCode])) {
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$hashedValues[$hashCode] = (object) [
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'value' => $value,
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'col' => $column,
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'rows' => [$row],
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];
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} else {
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$hashedValues[$hashCode]->rows[] = $row;
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}
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}
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ksort($hashedValues);
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foreach ($hashedValues as $hashedValue) {
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sort($hashedValue->rows);
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$rowStart = null;
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$rowEnd = null;
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$ranges = [];
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foreach ($hashedValue->rows as $row) {
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if ($rowStart === null) {
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$rowStart = $row;
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$rowEnd = $row;
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} elseif ($rowEnd === $row - 1) {
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$rowEnd = $row;
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} else {
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if ($rowStart == $rowEnd) {
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$ranges[] = $hashedValue->col . $rowStart;
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} else {
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$ranges[] = $hashedValue->col . $rowStart . ':' . $hashedValue->col . $rowEnd;
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}
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$rowStart = $row;
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$rowEnd = $row;
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}
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}
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if ($rowStart !== null) {
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if ($rowStart == $rowEnd) {
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$ranges[] = $hashedValue->col . $rowStart;
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} else {
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$ranges[] = $hashedValue->col . $rowStart . ':' . $hashedValue->col . $rowEnd;
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}
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}
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foreach ($ranges as $range) {
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$mergedCoordCollection[$range] = $hashedValue->value;
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}
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}
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return $mergedCoordCollection;
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}
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/**
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* Get the individual cell blocks from a range string, removing any $ characters.
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* then splitting by operators and returning an array with ranges and operators.
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*
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* @param string $rangeString
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*
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* @return array[]
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*/
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private static function getCellBlocksFromRangeString($rangeString)
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{
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$rangeString = str_replace('$', '', strtoupper($rangeString));
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// split range sets on intersection (space) or union (,) operators
|
|
$tokens = preg_split('/([ ,])/', $rangeString, -1, PREG_SPLIT_DELIM_CAPTURE);
|
|
// separate the range sets and the operators into arrays
|
|
$split = array_chunk($tokens, 2);
|
|
$ranges = array_column($split, 0);
|
|
$operators = array_column($split, 1);
|
|
|
|
return [$ranges, $operators];
|
|
}
|
|
|
|
/**
|
|
* Check that the given range is valid, i.e. that the start column and row are not greater than the end column and
|
|
* row.
|
|
*
|
|
* @param string $cellBlock The original range, for displaying a meaningful error message
|
|
* @param int $startColumnIndex
|
|
* @param int $endColumnIndex
|
|
* @param int $currentRow
|
|
* @param int $endRow
|
|
*/
|
|
private static function validateRange($cellBlock, $startColumnIndex, $endColumnIndex, $currentRow, $endRow): void
|
|
{
|
|
if ($startColumnIndex >= $endColumnIndex || $currentRow > $endRow) {
|
|
throw new Exception('Invalid range: "' . $cellBlock . '"');
|
|
}
|
|
}
|
|
}
|