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<?php
namespace PhpOffice\PhpSpreadsheet\Writer\Xls;
use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
use PhpOffice\PhpSpreadsheet\DefinedName;
use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException;
use PhpOffice\PhpSpreadsheet\Shared\Date;
use PhpOffice\PhpSpreadsheet\Shared\StringHelper;
use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Style\Style;
// Original file header of PEAR::Spreadsheet_Excel_Writer_Workbook (used as the base for this class):
// -----------------------------------------------------------------------------------------
// /*
// * Module written/ported by Xavier Noguer <xnoguer@rezebra.com>
// *
// * The majority of this is _NOT_ my code. I simply ported it from the
// * PERL Spreadsheet::WriteExcel module.
// *
// * The author of the Spreadsheet::WriteExcel module is John McNamara
// * <jmcnamara@cpan.org>
// *
// * I _DO_ maintain this code, and John McNamara has nothing to do with the
// * porting of this code to PHP. Any questions directly related to this
// * class library should be directed to me.
// *
// * License Information:
// *
// * Spreadsheet_Excel_Writer: A library for generating Excel Spreadsheets
// * Copyright (c) 2002-2003 Xavier Noguer xnoguer@rezebra.com
// *
// * This library is free software; you can redistribute it and/or
// * modify it under the terms of the GNU Lesser General Public
// * License as published by the Free Software Foundation; either
// * version 2.1 of the License, or (at your option) any later version.
// *
// * This library is distributed in the hope that it will be useful,
// * but WITHOUT ANY WARRANTY; without even the implied warranty of
// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// * Lesser General Public License for more details.
// *
// * You should have received a copy of the GNU Lesser General Public
// * License along with this library; if not, write to the Free Software
// * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// */
class Workbook extends BIFFwriter
{
/**
* Formula parser.
*
* @var \PhpOffice\PhpSpreadsheet\Writer\Xls\Parser
*/
private $parser;
/**
* The BIFF file size for the workbook.
*
* @var int
*
* @see calcSheetOffsets()
*/
private $biffSize;
/**
* XF Writers.
*
* @var \PhpOffice\PhpSpreadsheet\Writer\Xls\Xf[]
*/
private $xfWriters = [];
/**
* Array containing the colour palette.
*
* @var array
*/
private $palette;
/**
* The codepage indicates the text encoding used for strings.
*
* @var int
*/
private $codepage;
/**
* The country code used for localization.
*
* @var int
*/
private $countryCode;
/**
* Workbook.
*
* @var Spreadsheet
*/
private $spreadsheet;
/**
* Fonts writers.
*
* @var Font[]
*/
private $fontWriters = [];
/**
* Added fonts. Maps from font's hash => index in workbook.
*
* @var array
*/
private $addedFonts = [];
/**
* Shared number formats.
*
* @var array
*/
private $numberFormats = [];
/**
* Added number formats. Maps from numberFormat's hash => index in workbook.
*
* @var array
*/
private $addedNumberFormats = [];
/**
* Sizes of the binary worksheet streams.
*
* @var array
*/
private $worksheetSizes = [];
/**
* Offsets of the binary worksheet streams relative to the start of the global workbook stream.
*
* @var array
*/
private $worksheetOffsets = [];
/**
* Total number of shared strings in workbook.
*
* @var int
*/
private $stringTotal;
/**
* Number of unique shared strings in workbook.
*
* @var int
*/
private $stringUnique;
/**
* Array of unique shared strings in workbook.
*
* @var array
*/
private $stringTable;
/**
* Color cache.
*/
private $colors;
/**
* Escher object corresponding to MSODRAWINGGROUP.
*
* @var null|\PhpOffice\PhpSpreadsheet\Shared\Escher
*/
private $escher;
/**
* Class constructor.
*
* @param Spreadsheet $spreadsheet The Workbook
* @param int $str_total Total number of strings
* @param int $str_unique Total number of unique strings
* @param array $str_table String Table
* @param array $colors Colour Table
* @param Parser $parser The formula parser created for the Workbook
*/
public function __construct(Spreadsheet $spreadsheet, &$str_total, &$str_unique, &$str_table, &$colors, Parser $parser)
{
// It needs to call its parent's constructor explicitly
parent::__construct();
$this->parser = $parser;
$this->biffSize = 0;
$this->palette = [];
$this->countryCode = -1;
$this->stringTotal = &$str_total;
$this->stringUnique = &$str_unique;
$this->stringTable = &$str_table;
$this->colors = &$colors;
$this->setPaletteXl97();
$this->spreadsheet = $spreadsheet;
$this->codepage = 0x04B0;
// Add empty sheets and Build color cache
$countSheets = $spreadsheet->getSheetCount();
for ($i = 0; $i < $countSheets; ++$i) {
$phpSheet = $spreadsheet->getSheet($i);
$this->parser->setExtSheet($phpSheet->getTitle(), $i); // Register worksheet name with parser
$supbook_index = 0x00;
$ref = pack('vvv', $supbook_index, $i, $i);
$this->parser->references[] = $ref; // Register reference with parser
// Sheet tab colors?
if ($phpSheet->isTabColorSet()) {
$this->addColor($phpSheet->getTabColor()->getRGB());
}
}
}
/**
* Add a new XF writer.
*
* @param bool $isStyleXf Is it a style XF?
*
* @return int Index to XF record
*/
public function addXfWriter(Style $style, $isStyleXf = false)
{
$xfWriter = new Xf($style);
$xfWriter->setIsStyleXf($isStyleXf);
// Add the font if not already added
$fontIndex = $this->addFont($style->getFont());
// Assign the font index to the xf record
$xfWriter->setFontIndex($fontIndex);
// Background colors, best to treat these after the font so black will come after white in custom palette
$xfWriter->setFgColor($this->addColor($style->getFill()->getStartColor()->getRGB()));
$xfWriter->setBgColor($this->addColor($style->getFill()->getEndColor()->getRGB()));
$xfWriter->setBottomColor($this->addColor($style->getBorders()->getBottom()->getColor()->getRGB()));
$xfWriter->setTopColor($this->addColor($style->getBorders()->getTop()->getColor()->getRGB()));
$xfWriter->setRightColor($this->addColor($style->getBorders()->getRight()->getColor()->getRGB()));
$xfWriter->setLeftColor($this->addColor($style->getBorders()->getLeft()->getColor()->getRGB()));
$xfWriter->setDiagColor($this->addColor($style->getBorders()->getDiagonal()->getColor()->getRGB()));
// Add the number format if it is not a built-in one and not already added
if ($style->getNumberFormat()->getBuiltInFormatCode() === false) {
$numberFormatHashCode = $style->getNumberFormat()->getHashCode();
if (isset($this->addedNumberFormats[$numberFormatHashCode])) {
$numberFormatIndex = $this->addedNumberFormats[$numberFormatHashCode];
} else {
$numberFormatIndex = 164 + count($this->numberFormats);
$this->numberFormats[$numberFormatIndex] = $style->getNumberFormat();
$this->addedNumberFormats[$numberFormatHashCode] = $numberFormatIndex;
}
} else {
$numberFormatIndex = (int) $style->getNumberFormat()->getBuiltInFormatCode();
}
// Assign the number format index to xf record
$xfWriter->setNumberFormatIndex($numberFormatIndex);
$this->xfWriters[] = $xfWriter;
return count($this->xfWriters) - 1;
}
/**
* Add a font to added fonts.
*
* @return int Index to FONT record
*/
public function addFont(\PhpOffice\PhpSpreadsheet\Style\Font $font)
{
$fontHashCode = $font->getHashCode();
if (isset($this->addedFonts[$fontHashCode])) {
$fontIndex = $this->addedFonts[$fontHashCode];
} else {
$countFonts = count($this->fontWriters);
$fontIndex = ($countFonts < 4) ? $countFonts : $countFonts + 1;
$fontWriter = new Font($font);
$fontWriter->setColorIndex($this->addColor($font->getColor()->getRGB()));
$this->fontWriters[] = $fontWriter;
$this->addedFonts[$fontHashCode] = $fontIndex;
}
return $fontIndex;
}
/**
* Alter color palette adding a custom color.
*
* @param string $rgb E.g. 'FF00AA'
*
* @return int Color index
*/
private function addColor($rgb)
{
if (!isset($this->colors[$rgb])) {
$color =
[
hexdec(substr($rgb, 0, 2)),
hexdec(substr($rgb, 2, 2)),
hexdec(substr($rgb, 4)),
0,
];
$colorIndex = array_search($color, $this->palette);
if ($colorIndex) {
$this->colors[$rgb] = $colorIndex;
} else {
if (count($this->colors) === 0) {
$lastColor = 7;
} else {
$lastColor = end($this->colors);
}
if ($lastColor < 57) {
// then we add a custom color altering the palette
$colorIndex = $lastColor + 1;
$this->palette[$colorIndex] = $color;
$this->colors[$rgb] = $colorIndex;
} else {
// no room for more custom colors, just map to black
$colorIndex = 0;
}
}
} else {
// fetch already added custom color
$colorIndex = $this->colors[$rgb];
}
return $colorIndex;
}
/**
* Sets the colour palette to the Excel 97+ default.
*/
private function setPaletteXl97(): void
{
$this->palette = [
0x08 => [0x00, 0x00, 0x00, 0x00],
0x09 => [0xff, 0xff, 0xff, 0x00],
0x0A => [0xff, 0x00, 0x00, 0x00],
0x0B => [0x00, 0xff, 0x00, 0x00],
0x0C => [0x00, 0x00, 0xff, 0x00],
0x0D => [0xff, 0xff, 0x00, 0x00],
0x0E => [0xff, 0x00, 0xff, 0x00],
0x0F => [0x00, 0xff, 0xff, 0x00],
0x10 => [0x80, 0x00, 0x00, 0x00],
0x11 => [0x00, 0x80, 0x00, 0x00],
0x12 => [0x00, 0x00, 0x80, 0x00],
0x13 => [0x80, 0x80, 0x00, 0x00],
0x14 => [0x80, 0x00, 0x80, 0x00],
0x15 => [0x00, 0x80, 0x80, 0x00],
0x16 => [0xc0, 0xc0, 0xc0, 0x00],
0x17 => [0x80, 0x80, 0x80, 0x00],
0x18 => [0x99, 0x99, 0xff, 0x00],
0x19 => [0x99, 0x33, 0x66, 0x00],
0x1A => [0xff, 0xff, 0xcc, 0x00],
0x1B => [0xcc, 0xff, 0xff, 0x00],
0x1C => [0x66, 0x00, 0x66, 0x00],
0x1D => [0xff, 0x80, 0x80, 0x00],
0x1E => [0x00, 0x66, 0xcc, 0x00],
0x1F => [0xcc, 0xcc, 0xff, 0x00],
0x20 => [0x00, 0x00, 0x80, 0x00],
0x21 => [0xff, 0x00, 0xff, 0x00],
0x22 => [0xff, 0xff, 0x00, 0x00],
0x23 => [0x00, 0xff, 0xff, 0x00],
0x24 => [0x80, 0x00, 0x80, 0x00],
0x25 => [0x80, 0x00, 0x00, 0x00],
0x26 => [0x00, 0x80, 0x80, 0x00],
0x27 => [0x00, 0x00, 0xff, 0x00],
0x28 => [0x00, 0xcc, 0xff, 0x00],
0x29 => [0xcc, 0xff, 0xff, 0x00],
0x2A => [0xcc, 0xff, 0xcc, 0x00],
0x2B => [0xff, 0xff, 0x99, 0x00],
0x2C => [0x99, 0xcc, 0xff, 0x00],
0x2D => [0xff, 0x99, 0xcc, 0x00],
0x2E => [0xcc, 0x99, 0xff, 0x00],
0x2F => [0xff, 0xcc, 0x99, 0x00],
0x30 => [0x33, 0x66, 0xff, 0x00],
0x31 => [0x33, 0xcc, 0xcc, 0x00],
0x32 => [0x99, 0xcc, 0x00, 0x00],
0x33 => [0xff, 0xcc, 0x00, 0x00],
0x34 => [0xff, 0x99, 0x00, 0x00],
0x35 => [0xff, 0x66, 0x00, 0x00],
0x36 => [0x66, 0x66, 0x99, 0x00],
0x37 => [0x96, 0x96, 0x96, 0x00],
0x38 => [0x00, 0x33, 0x66, 0x00],
0x39 => [0x33, 0x99, 0x66, 0x00],
0x3A => [0x00, 0x33, 0x00, 0x00],
0x3B => [0x33, 0x33, 0x00, 0x00],
0x3C => [0x99, 0x33, 0x00, 0x00],
0x3D => [0x99, 0x33, 0x66, 0x00],
0x3E => [0x33, 0x33, 0x99, 0x00],
0x3F => [0x33, 0x33, 0x33, 0x00],
];
}
/**
* Assemble worksheets into a workbook and send the BIFF data to an OLE
* storage.
*
* @param array $worksheetSizes The sizes in bytes of the binary worksheet streams
*
* @return string Binary data for workbook stream
*/
public function writeWorkbook(array $worksheetSizes)
{
$this->worksheetSizes = $worksheetSizes;
// Calculate the number of selected worksheet tabs and call the finalization
// methods for each worksheet
$total_worksheets = $this->spreadsheet->getSheetCount();
// Add part 1 of the Workbook globals, what goes before the SHEET records
$this->storeBof(0x0005);
$this->writeCodepage();
$this->writeWindow1();
$this->writeDateMode();
$this->writeAllFonts();
$this->writeAllNumberFormats();
$this->writeAllXfs();
$this->writeAllStyles();
$this->writePalette();
// Prepare part 3 of the workbook global stream, what goes after the SHEET records
$part3 = '';
if ($this->countryCode !== -1) {
$part3 .= $this->writeCountry();
}
$part3 .= $this->writeRecalcId();
$part3 .= $this->writeSupbookInternal();
/* TODO: store external SUPBOOK records and XCT and CRN records
in case of external references for BIFF8 */
$part3 .= $this->writeExternalsheetBiff8();
$part3 .= $this->writeAllDefinedNamesBiff8();
$part3 .= $this->writeMsoDrawingGroup();
$part3 .= $this->writeSharedStringsTable();
$part3 .= $this->writeEof();
// Add part 2 of the Workbook globals, the SHEET records
$this->calcSheetOffsets();
for ($i = 0; $i < $total_worksheets; ++$i) {
$this->writeBoundSheet($this->spreadsheet->getSheet($i), $this->worksheetOffsets[$i]);
}
// Add part 3 of the Workbook globals
$this->_data .= $part3;
return $this->_data;
}
/**
* Calculate offsets for Worksheet BOF records.
*/
private function calcSheetOffsets(): void
{
$boundsheet_length = 10; // fixed length for a BOUNDSHEET record
// size of Workbook globals part 1 + 3
$offset = $this->_datasize;
// add size of Workbook globals part 2, the length of the SHEET records
$total_worksheets = count($this->spreadsheet->getAllSheets());
foreach ($this->spreadsheet->getWorksheetIterator() as $sheet) {
$offset += $boundsheet_length + strlen(StringHelper::UTF8toBIFF8UnicodeShort($sheet->getTitle()));
}
// add the sizes of each of the Sheet substreams, respectively
for ($i = 0; $i < $total_worksheets; ++$i) {
$this->worksheetOffsets[$i] = $offset;
$offset += $this->worksheetSizes[$i];
}
$this->biffSize = $offset;
}
/**
* Store the Excel FONT records.
*/
private function writeAllFonts(): void
{
foreach ($this->fontWriters as $fontWriter) {
$this->append($fontWriter->writeFont());
}
}
/**
* Store user defined numerical formats i.e. FORMAT records.
*/
private function writeAllNumberFormats(): void
{
foreach ($this->numberFormats as $numberFormatIndex => $numberFormat) {
$this->writeNumberFormat($numberFormat->getFormatCode(), $numberFormatIndex);
}
}
/**
* Write all XF records.
*/
private function writeAllXfs(): void
{
foreach ($this->xfWriters as $xfWriter) {
$this->append($xfWriter->writeXf());
}
}
/**
* Write all STYLE records.
*/
private function writeAllStyles(): void
{
$this->writeStyle();
}
private function parseDefinedNameValue(DefinedName $definedName): string
{
$definedRange = $definedName->getValue();
$splitCount = preg_match_all(
'/' . Calculation::CALCULATION_REGEXP_CELLREF . '/mui',
$definedRange,
$splitRanges,
PREG_OFFSET_CAPTURE
);
$lengths = array_map('strlen', array_column($splitRanges[0], 0));
$offsets = array_column($splitRanges[0], 1);
$worksheets = $splitRanges[2];
$columns = $splitRanges[6];
$rows = $splitRanges[7];
while ($splitCount > 0) {
--$splitCount;
$length = $lengths[$splitCount];
$offset = $offsets[$splitCount];
$worksheet = $worksheets[$splitCount][0];
$column = $columns[$splitCount][0];
$row = $rows[$splitCount][0];
$newRange = '';
if (empty($worksheet)) {
if (($offset === 0) || ($definedRange[$offset - 1] !== ':')) {
// We should have a worksheet
$worksheet = $definedName->getWorksheet() ? $definedName->getWorksheet()->getTitle() : null;
}
} else {
$worksheet = str_replace("''", "'", trim($worksheet, "'"));
}
if (!empty($worksheet)) {
$newRange = "'" . str_replace("'", "''", $worksheet) . "'!";
}
if (!empty($column)) {
$newRange .= "\${$column}";
}
if (!empty($row)) {
$newRange .= "\${$row}";
}
$definedRange = substr($definedRange, 0, $offset) . $newRange . substr($definedRange, $offset + $length);
}
return $definedRange;
}
/**
* Writes all the DEFINEDNAME records (BIFF8).
* So far this is only used for repeating rows/columns (print titles) and print areas.
*/
private function writeAllDefinedNamesBiff8()
{
$chunk = '';
// Named ranges
$definedNames = $this->spreadsheet->getDefinedNames();
if (count($definedNames) > 0) {
// Loop named ranges
foreach ($definedNames as $definedName) {
$range = $this->parseDefinedNameValue($definedName);
// parse formula
try {
$error = $this->parser->parse($range);
$formulaData = $this->parser->toReversePolish();
// make sure tRef3d is of type tRef3dR (0x3A)
if (isset($formulaData[0]) && ($formulaData[0] == "\x7A" || $formulaData[0] == "\x5A")) {
$formulaData = "\x3A" . substr($formulaData, 1);
}
if ($definedName->getLocalOnly()) {
/**
* local scope.
*
* @phpstan-ignore-next-line
*/
$scope = $this->spreadsheet->getIndex($definedName->getScope()) + 1;
} else {
// global scope
$scope = 0;
}
$chunk .= $this->writeData($this->writeDefinedNameBiff8($definedName->getName(), $formulaData, $scope, false));
} catch (PhpSpreadsheetException $e) {
// do nothing
}
}
}
// total number of sheets
$total_worksheets = $this->spreadsheet->getSheetCount();
// write the print titles (repeating rows, columns), if any
for ($i = 0; $i < $total_worksheets; ++$i) {
$sheetSetup = $this->spreadsheet->getSheet($i)->getPageSetup();
// simultaneous repeatColumns repeatRows
if ($sheetSetup->isColumnsToRepeatAtLeftSet() && $sheetSetup->isRowsToRepeatAtTopSet()) {
$repeat = $sheetSetup->getColumnsToRepeatAtLeft();
$colmin = Coordinate::columnIndexFromString($repeat[0]) - 1;
$colmax = Coordinate::columnIndexFromString($repeat[1]) - 1;
$repeat = $sheetSetup->getRowsToRepeatAtTop();
$rowmin = $repeat[0] - 1;
$rowmax = $repeat[1] - 1;
// construct formula data manually
$formulaData = pack('Cv', 0x29, 0x17); // tMemFunc
$formulaData .= pack('Cvvvvv', 0x3B, $i, 0, 65535, $colmin, $colmax); // tArea3d
$formulaData .= pack('Cvvvvv', 0x3B, $i, $rowmin, $rowmax, 0, 255); // tArea3d
$formulaData .= pack('C', 0x10); // tList
// store the DEFINEDNAME record
$chunk .= $this->writeData($this->writeDefinedNameBiff8(pack('C', 0x07), $formulaData, $i + 1, true));
// (exclusive) either repeatColumns or repeatRows
} elseif ($sheetSetup->isColumnsToRepeatAtLeftSet() || $sheetSetup->isRowsToRepeatAtTopSet()) {
// Columns to repeat
if ($sheetSetup->isColumnsToRepeatAtLeftSet()) {
$repeat = $sheetSetup->getColumnsToRepeatAtLeft();
$colmin = Coordinate::columnIndexFromString($repeat[0]) - 1;
$colmax = Coordinate::columnIndexFromString($repeat[1]) - 1;
} else {
$colmin = 0;
$colmax = 255;
}
// Rows to repeat
if ($sheetSetup->isRowsToRepeatAtTopSet()) {
$repeat = $sheetSetup->getRowsToRepeatAtTop();
$rowmin = $repeat[0] - 1;
$rowmax = $repeat[1] - 1;
} else {
$rowmin = 0;
$rowmax = 65535;
}
// construct formula data manually because parser does not recognize absolute 3d cell references
$formulaData = pack('Cvvvvv', 0x3B, $i, $rowmin, $rowmax, $colmin, $colmax);
// store the DEFINEDNAME record
$chunk .= $this->writeData($this->writeDefinedNameBiff8(pack('C', 0x07), $formulaData, $i + 1, true));
}
}
// write the print areas, if any
for ($i = 0; $i < $total_worksheets; ++$i) {
$sheetSetup = $this->spreadsheet->getSheet($i)->getPageSetup();
if ($sheetSetup->isPrintAreaSet()) {
// Print area, e.g. A3:J6,H1:X20
$printArea = Coordinate::splitRange($sheetSetup->getPrintArea());
$countPrintArea = count($printArea);
$formulaData = '';
for ($j = 0; $j < $countPrintArea; ++$j) {
$printAreaRect = $printArea[$j]; // e.g. A3:J6
$printAreaRect[0] = Coordinate::indexesFromString($printAreaRect[0]);
$printAreaRect[1] = Coordinate::indexesFromString($printAreaRect[1]);
$print_rowmin = $printAreaRect[0][1] - 1;
$print_rowmax = $printAreaRect[1][1] - 1;
$print_colmin = $printAreaRect[0][0] - 1;
$print_colmax = $printAreaRect[1][0] - 1;
// construct formula data manually because parser does not recognize absolute 3d cell references
$formulaData .= pack('Cvvvvv', 0x3B, $i, $print_rowmin, $print_rowmax, $print_colmin, $print_colmax);
if ($j > 0) {
$formulaData .= pack('C', 0x10); // list operator token ','
}
}
// store the DEFINEDNAME record
$chunk .= $this->writeData($this->writeDefinedNameBiff8(pack('C', 0x06), $formulaData, $i + 1, true));
}
}
// write autofilters, if any
for ($i = 0; $i < $total_worksheets; ++$i) {
$sheetAutoFilter = $this->spreadsheet->getSheet($i)->getAutoFilter();
$autoFilterRange = $sheetAutoFilter->getRange();
if (!empty($autoFilterRange)) {
$rangeBounds = Coordinate::rangeBoundaries($autoFilterRange);
//Autofilter built in name
$name = pack('C', 0x0D);
$chunk .= $this->writeData($this->writeShortNameBiff8($name, $i + 1, $rangeBounds, true));
}
}
return $chunk;
}
/**
* Write a DEFINEDNAME record for BIFF8 using explicit binary formula data.
*
* @param string $name The name in UTF-8
* @param string $formulaData The binary formula data
* @param int $sheetIndex 1-based sheet index the defined name applies to. 0 = global
* @param bool $isBuiltIn Built-in name?
*
* @return string Complete binary record data
*/
private function writeDefinedNameBiff8($name, $formulaData, $sheetIndex = 0, $isBuiltIn = false)
{
$record = 0x0018;
// option flags
$options = $isBuiltIn ? 0x20 : 0x00;
// length of the name, character count
$nlen = StringHelper::countCharacters($name);
// name with stripped length field
$name = substr(StringHelper::UTF8toBIFF8UnicodeLong($name), 2);
// size of the formula (in bytes)
$sz = strlen($formulaData);
// combine the parts
$data = pack('vCCvvvCCCC', $options, 0, $nlen, $sz, 0, $sheetIndex, 0, 0, 0, 0)
. $name . $formulaData;
$length = strlen($data);
$header = pack('vv', $record, $length);
return $header . $data;
}
/**
* Write a short NAME record.
*
* @param string $name
* @param int $sheetIndex 1-based sheet index the defined name applies to. 0 = global
* @param int[][] $rangeBounds range boundaries
* @param bool $isHidden
*
* @return string Complete binary record data
* */
private function writeShortNameBiff8($name, $sheetIndex, $rangeBounds, $isHidden = false)
{
$record = 0x0018;
// option flags
$options = ($isHidden ? 0x21 : 0x00);
$extra = pack(
'Cvvvvv',
0x3B,
$sheetIndex - 1,
$rangeBounds[0][1] - 1,
$rangeBounds[1][1] - 1,
$rangeBounds[0][0] - 1,
$rangeBounds[1][0] - 1
);
// size of the formula (in bytes)
$sz = strlen($extra);
// combine the parts
$data = pack('vCCvvvCCCCC', $options, 0, 1, $sz, 0, $sheetIndex, 0, 0, 0, 0, 0)
. $name . $extra;
$length = strlen($data);
$header = pack('vv', $record, $length);
return $header . $data;
}
/**
* Stores the CODEPAGE biff record.
*/
private function writeCodepage(): void
{
$record = 0x0042; // Record identifier
$length = 0x0002; // Number of bytes to follow
$cv = $this->codepage; // The code page
$header = pack('vv', $record, $length);
$data = pack('v', $cv);
$this->append($header . $data);
}
/**
* Write Excel BIFF WINDOW1 record.
*/
private function writeWindow1(): void
{
$record = 0x003D; // Record identifier
$length = 0x0012; // Number of bytes to follow
$xWn = 0x0000; // Horizontal position of window
$yWn = 0x0000; // Vertical position of window
$dxWn = 0x25BC; // Width of window
$dyWn = 0x1572; // Height of window
$grbit = 0x0038; // Option flags
// not supported by PhpSpreadsheet, so there is only one selected sheet, the active
$ctabsel = 1; // Number of workbook tabs selected
$wTabRatio = 0x0258; // Tab to scrollbar ratio
// not supported by PhpSpreadsheet, set to 0
$itabFirst = 0; // 1st displayed worksheet
$itabCur = $this->spreadsheet->getActiveSheetIndex(); // Active worksheet
$header = pack('vv', $record, $length);
$data = pack('vvvvvvvvv', $xWn, $yWn, $dxWn, $dyWn, $grbit, $itabCur, $itabFirst, $ctabsel, $wTabRatio);
$this->append($header . $data);
}
/**
* Writes Excel BIFF BOUNDSHEET record.
*
* @param int $offset Location of worksheet BOF
*/
private function writeBoundSheet(\PhpOffice\PhpSpreadsheet\Worksheet\Worksheet $sheet, $offset): void
{
$sheetname = $sheet->getTitle();
$record = 0x0085; // Record identifier
// sheet state
switch ($sheet->getSheetState()) {
case \PhpOffice\PhpSpreadsheet\Worksheet\Worksheet::SHEETSTATE_VISIBLE:
$ss = 0x00;
break;
case \PhpOffice\PhpSpreadsheet\Worksheet\Worksheet::SHEETSTATE_HIDDEN:
$ss = 0x01;
break;
case \PhpOffice\PhpSpreadsheet\Worksheet\Worksheet::SHEETSTATE_VERYHIDDEN:
$ss = 0x02;
break;
default:
$ss = 0x00;
break;
}
// sheet type
$st = 0x00;
$grbit = 0x0000; // Visibility and sheet type
$data = pack('VCC', $offset, $ss, $st);
$data .= StringHelper::UTF8toBIFF8UnicodeShort($sheetname);
$length = strlen($data);
$header = pack('vv', $record, $length);
$this->append($header . $data);
}
/**
* Write Internal SUPBOOK record.
*/
private function writeSupbookInternal()
{
$record = 0x01AE; // Record identifier
$length = 0x0004; // Bytes to follow
$header = pack('vv', $record, $length);
$data = pack('vv', $this->spreadsheet->getSheetCount(), 0x0401);
return $this->writeData($header . $data);
}
/**
* Writes the Excel BIFF EXTERNSHEET record. These references are used by
* formulas.
*/
private function writeExternalsheetBiff8()
{
$totalReferences = count($this->parser->references);
$record = 0x0017; // Record identifier
$length = 2 + 6 * $totalReferences; // Number of bytes to follow
$supbook_index = 0; // FIXME: only using internal SUPBOOK record
$header = pack('vv', $record, $length);
$data = pack('v', $totalReferences);
for ($i = 0; $i < $totalReferences; ++$i) {
$data .= $this->parser->references[$i];
}
return $this->writeData($header . $data);
}
/**
* Write Excel BIFF STYLE records.
*/
private function writeStyle(): void
{
$record = 0x0293; // Record identifier
$length = 0x0004; // Bytes to follow
$ixfe = 0x8000; // Index to cell style XF
$BuiltIn = 0x00; // Built-in style
$iLevel = 0xff; // Outline style level
$header = pack('vv', $record, $length);
$data = pack('vCC', $ixfe, $BuiltIn, $iLevel);
$this->append($header . $data);
}
/**
* Writes Excel FORMAT record for non "built-in" numerical formats.
*
* @param string $format Custom format string
* @param int $ifmt Format index code
*/
private function writeNumberFormat($format, $ifmt): void
{
$record = 0x041E; // Record identifier
$numberFormatString = StringHelper::UTF8toBIFF8UnicodeLong($format);
$length = 2 + strlen($numberFormatString); // Number of bytes to follow
$header = pack('vv', $record, $length);
$data = pack('v', $ifmt) . $numberFormatString;
$this->append($header . $data);
}
/**
* Write DATEMODE record to indicate the date system in use (1904 or 1900).
*/
private function writeDateMode(): void
{
$record = 0x0022; // Record identifier
$length = 0x0002; // Bytes to follow
$f1904 = (Date::getExcelCalendar() === Date::CALENDAR_MAC_1904)
? 1
: 0; // Flag for 1904 date system
$header = pack('vv', $record, $length);
$data = pack('v', $f1904);
$this->append($header . $data);
}
/**
* Stores the COUNTRY record for localization.
*
* @return string
*/
private function writeCountry()
{
$record = 0x008C; // Record identifier
$length = 4; // Number of bytes to follow
$header = pack('vv', $record, $length);
// using the same country code always for simplicity
$data = pack('vv', $this->countryCode, $this->countryCode);
return $this->writeData($header . $data);
}
/**
* Write the RECALCID record.
*
* @return string
*/
private function writeRecalcId()
{
$record = 0x01C1; // Record identifier
$length = 8; // Number of bytes to follow
$header = pack('vv', $record, $length);
// by inspection of real Excel files, MS Office Excel 2007 writes this
$data = pack('VV', 0x000001C1, 0x00001E667);
return $this->writeData($header . $data);
}
/**
* Stores the PALETTE biff record.
*/
private function writePalette(): void
{
$aref = $this->palette;
$record = 0x0092; // Record identifier
$length = 2 + 4 * count($aref); // Number of bytes to follow
$ccv = count($aref); // Number of RGB values to follow
$data = ''; // The RGB data
// Pack the RGB data
foreach ($aref as $color) {
foreach ($color as $byte) {
$data .= pack('C', $byte);
}
}
$header = pack('vvv', $record, $length, $ccv);
$this->append($header . $data);
}
/**
* Handling of the SST continue blocks is complicated by the need to include an
* additional continuation byte depending on whether the string is split between
* blocks or whether it starts at the beginning of the block. (There are also
* additional complications that will arise later when/if Rich Strings are
* supported).
*
* The Excel documentation says that the SST record should be followed by an
* EXTSST record. The EXTSST record is a hash table that is used to optimise
* access to SST. However, despite the documentation it doesn't seem to be
* required so we will ignore it.
*
* @return string Binary data
*/
private function writeSharedStringsTable()
{
// maximum size of record data (excluding record header)
$continue_limit = 8224;
// initialize array of record data blocks
$recordDatas = [];
// start SST record data block with total number of strings, total number of unique strings
$recordData = pack('VV', $this->stringTotal, $this->stringUnique);
// loop through all (unique) strings in shared strings table
foreach (array_keys($this->stringTable) as $string) {
// here $string is a BIFF8 encoded string
// length = character count
$headerinfo = unpack('vlength/Cencoding', $string);
// currently, this is always 1 = uncompressed
$encoding = $headerinfo['encoding'];
// initialize finished writing current $string
$finished = false;
while ($finished === false) {
// normally, there will be only one cycle, but if string cannot immediately be written as is
// there will be need for more than one cylcle, if string longer than one record data block, there
// may be need for even more cycles
if (strlen($recordData) + strlen($string) <= $continue_limit) {
// then we can write the string (or remainder of string) without any problems
$recordData .= $string;
if (strlen($recordData) + strlen($string) == $continue_limit) {
// we close the record data block, and initialize a new one
$recordDatas[] = $recordData;
$recordData = '';
}
// we are finished writing this string
$finished = true;
} else {
// special treatment writing the string (or remainder of the string)
// If the string is very long it may need to be written in more than one CONTINUE record.
// check how many bytes more there is room for in the current record
$space_remaining = $continue_limit - strlen($recordData);
// minimum space needed
// uncompressed: 2 byte string length length field + 1 byte option flags + 2 byte character
// compressed: 2 byte string length length field + 1 byte option flags + 1 byte character
$min_space_needed = ($encoding == 1) ? 5 : 4;
// We have two cases
// 1. space remaining is less than minimum space needed
// here we must waste the space remaining and move to next record data block
// 2. space remaining is greater than or equal to minimum space needed
// here we write as much as we can in the current block, then move to next record data block
// 1. space remaining is less than minimum space needed
if ($space_remaining < $min_space_needed) {
// we close the block, store the block data
$recordDatas[] = $recordData;
// and start new record data block where we start writing the string
$recordData = '';
// 2. space remaining is greater than or equal to minimum space needed
} else {
// initialize effective remaining space, for Unicode strings this may need to be reduced by 1, see below
$effective_space_remaining = $space_remaining;
// for uncompressed strings, sometimes effective space remaining is reduced by 1
if ($encoding == 1 && (strlen($string) - $space_remaining) % 2 == 1) {
--$effective_space_remaining;
}
// one block fininshed, store the block data
$recordData .= substr($string, 0, $effective_space_remaining);
$string = substr($string, $effective_space_remaining); // for next cycle in while loop
$recordDatas[] = $recordData;
// start new record data block with the repeated option flags
$recordData = pack('C', $encoding);
}
}
}
}
// Store the last record data block unless it is empty
// if there was no need for any continue records, this will be the for SST record data block itself
if (strlen($recordData) > 0) {
$recordDatas[] = $recordData;
}
// combine into one chunk with all the blocks SST, CONTINUE,...
$chunk = '';
foreach ($recordDatas as $i => $recordData) {
// first block should have the SST record header, remaing should have CONTINUE header
$record = ($i == 0) ? 0x00FC : 0x003C;
$header = pack('vv', $record, strlen($recordData));
$data = $header . $recordData;
$chunk .= $this->writeData($data);
}
return $chunk;
}
/**
* Writes the MSODRAWINGGROUP record if needed. Possibly split using CONTINUE records.
*/
private function writeMsoDrawingGroup()
{
// write the Escher stream if necessary
if (isset($this->escher)) {
$writer = new Escher($this->escher);
$data = $writer->close();
$record = 0x00EB;
$length = strlen($data);
$header = pack('vv', $record, $length);
return $this->writeData($header . $data);
}
return '';
}
/**
* Get Escher object.
*/
public function getEscher(): ?\PhpOffice\PhpSpreadsheet\Shared\Escher
{
return $this->escher;
}
/**
* Set Escher object.
*/
public function setEscher(?\PhpOffice\PhpSpreadsheet\Shared\Escher $escher): void
{
$this->escher = $escher;
}
}
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