72 lines
2.0 KiB
PHP
72 lines
2.0 KiB
PHP
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<?php
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namespace PhpOffice\PhpSpreadsheet\Reader\Xls;
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use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
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use PhpOffice\PhpSpreadsheet\Reader\Exception as ReaderException;
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use PhpOffice\PhpSpreadsheet\Reader\Xls;
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class Biff5 extends Xls
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{
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/**
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* Reads a cell range address in BIFF5 e.g. 'A2:B6' or 'A1'
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* always fixed range
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* section 2.5.14.
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*/
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public static function readBIFF5CellRangeAddressFixed(string $subData): string
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{
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// offset: 0; size: 2; index to first row
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$fr = self::getUInt2d($subData, 0) + 1;
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// offset: 2; size: 2; index to last row
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$lr = self::getUInt2d($subData, 2) + 1;
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// offset: 4; size: 1; index to first column
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$fc = ord($subData[4]);
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// offset: 5; size: 1; index to last column
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$lc = ord($subData[5]);
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// check values
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if ($fr > $lr || $fc > $lc) {
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throw new ReaderException('Not a cell range address');
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}
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// column index to letter
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$fc = Coordinate::stringFromColumnIndex($fc + 1);
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$lc = Coordinate::stringFromColumnIndex($lc + 1);
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if ($fr == $lr && $fc == $lc) {
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return "$fc$fr";
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}
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return "$fc$fr:$lc$lr";
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}
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/**
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* Read BIFF5 cell range address list
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* section 2.5.15.
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*
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* @return array{size: int, cellRangeAddresses: string[]}
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*/
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public static function readBIFF5CellRangeAddressList(string $subData): array
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{
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$cellRangeAddresses = [];
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// offset: 0; size: 2; number of the following cell range addresses
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$nm = self::getUInt2d($subData, 0);
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$offset = 2;
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// offset: 2; size: 6 * $nm; list of $nm (fixed) cell range addresses
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for ($i = 0; $i < $nm; ++$i) {
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$cellRangeAddresses[] = self::readBIFF5CellRangeAddressFixed(substr($subData, $offset, 6));
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$offset += 6;
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}
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return [
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'size' => 2 + 6 * $nm,
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'cellRangeAddresses' => $cellRangeAddresses,
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];
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}
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}
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