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<?php
namespace PhpOffice\PhpSpreadsheet\Reader;
use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
use PhpOffice\PhpSpreadsheet\Cell\DataType;
use PhpOffice\PhpSpreadsheet\DefinedName;
use PhpOffice\PhpSpreadsheet\Reader\Gnumeric\PageSetup;
use PhpOffice\PhpSpreadsheet\Reader\Gnumeric\Properties;
use PhpOffice\PhpSpreadsheet\Reader\Gnumeric\Styles;
use PhpOffice\PhpSpreadsheet\Reader\Security\XmlScanner;
use PhpOffice\PhpSpreadsheet\ReferenceHelper;
use PhpOffice\PhpSpreadsheet\RichText\RichText;
use PhpOffice\PhpSpreadsheet\Settings;
use PhpOffice\PhpSpreadsheet\Shared\File;
use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
use SimpleXMLElement;
use XMLReader;
class Gnumeric extends BaseReader
{
const NAMESPACE_GNM = 'http://www.gnumeric.org/v10.dtd'; // gmr in old sheets
const NAMESPACE_XSI = 'http://www.w3.org/2001/XMLSchema-instance';
const NAMESPACE_OFFICE = 'urn:oasis:names:tc:opendocument:xmlns:office:1.0';
const NAMESPACE_XLINK = 'http://www.w3.org/1999/xlink';
const NAMESPACE_DC = 'http://purl.org/dc/elements/1.1/';
const NAMESPACE_META = 'urn:oasis:names:tc:opendocument:xmlns:meta:1.0';
const NAMESPACE_OOO = 'http://openoffice.org/2004/office';
/**
* Shared Expressions.
*
* @var array
*/
private $expressions = [];
/**
* Spreadsheet shared across all functions.
*
* @var Spreadsheet
*/
private $spreadsheet;
/** @var ReferenceHelper */
private $referenceHelper;
/** @var array */
public static $mappings = [
'dataType' => [
'10' => DataType::TYPE_NULL,
'20' => DataType::TYPE_BOOL,
'30' => DataType::TYPE_NUMERIC, // Integer doesn't exist in Excel
'40' => DataType::TYPE_NUMERIC, // Float
'50' => DataType::TYPE_ERROR,
'60' => DataType::TYPE_STRING,
//'70': // Cell Range
//'80': // Array
],
];
/**
* Create a new Gnumeric.
*/
public function __construct()
{
parent::__construct();
$this->referenceHelper = ReferenceHelper::getInstance();
$this->securityScanner = XmlScanner::getInstance($this);
}
/**
* Can the current IReader read the file?
*
* @param string $pFilename
*
* @return bool
*/
public function canRead($pFilename)
{
File::assertFile($pFilename);
// Check if gzlib functions are available
$data = '';
if (function_exists('gzread')) {
// Read signature data (first 3 bytes)
$fh = fopen($pFilename, 'rb');
if ($fh !== false) {
$data = fread($fh, 2);
fclose($fh);
}
}
return $data === chr(0x1F) . chr(0x8B);
}
private static function matchXml(XMLReader $xml, string $expectedLocalName): bool
{
return $xml->namespaceURI === self::NAMESPACE_GNM
&& $xml->localName === $expectedLocalName
&& $xml->nodeType === XMLReader::ELEMENT;
}
/**
* Reads names of the worksheets from a file, without parsing the whole file to a Spreadsheet object.
*
* @param string $pFilename
*
* @return array
*/
public function listWorksheetNames($pFilename)
{
File::assertFile($pFilename);
$xml = new XMLReader();
$xml->xml($this->securityScanner->scanFile('compress.zlib://' . realpath($pFilename)), null, Settings::getLibXmlLoaderOptions());
$xml->setParserProperty(2, true);
$worksheetNames = [];
while ($xml->read()) {
if (self::matchXml($xml, 'SheetName')) {
$xml->read(); // Move onto the value node
$worksheetNames[] = (string) $xml->value;
} elseif (self::matchXml($xml, 'Sheets')) {
// break out of the loop once we've got our sheet names rather than parse the entire file
break;
}
}
return $worksheetNames;
}
/**
* Return worksheet info (Name, Last Column Letter, Last Column Index, Total Rows, Total Columns).
*
* @param string $pFilename
*
* @return array
*/
public function listWorksheetInfo($pFilename)
{
File::assertFile($pFilename);
$xml = new XMLReader();
$xml->xml($this->securityScanner->scanFile('compress.zlib://' . realpath($pFilename)), null, Settings::getLibXmlLoaderOptions());
$xml->setParserProperty(2, true);
$worksheetInfo = [];
while ($xml->read()) {
if (self::matchXml($xml, 'Sheet')) {
$tmpInfo = [
'worksheetName' => '',
'lastColumnLetter' => 'A',
'lastColumnIndex' => 0,
'totalRows' => 0,
'totalColumns' => 0,
];
while ($xml->read()) {
if (self::matchXml($xml, 'Name')) {
$xml->read(); // Move onto the value node
$tmpInfo['worksheetName'] = (string) $xml->value;
} elseif (self::matchXml($xml, 'MaxCol')) {
$xml->read(); // Move onto the value node
$tmpInfo['lastColumnIndex'] = (int) $xml->value;
$tmpInfo['totalColumns'] = (int) $xml->value + 1;
} elseif (self::matchXml($xml, 'MaxRow')) {
$xml->read(); // Move onto the value node
$tmpInfo['totalRows'] = (int) $xml->value + 1;
break;
}
}
$tmpInfo['lastColumnLetter'] = Coordinate::stringFromColumnIndex($tmpInfo['lastColumnIndex'] + 1);
$worksheetInfo[] = $tmpInfo;
}
}
return $worksheetInfo;
}
/**
* @param string $filename
*
* @return string
*/
private function gzfileGetContents($filename)
{
$file = @gzopen($filename, 'rb');
$data = '';
if ($file !== false) {
while (!gzeof($file)) {
$data .= gzread($file, 1024);
}
gzclose($file);
}
return $data;
}
public static function gnumericMappings(): array
{
return array_merge(self::$mappings, Styles::$mappings);
}
private function processComments(SimpleXMLElement $sheet): void
{
if ((!$this->readDataOnly) && (isset($sheet->Objects))) {
foreach ($sheet->Objects->children(self::NAMESPACE_GNM) as $key => $comment) {
$commentAttributes = $comment->attributes();
// Only comment objects are handled at the moment
if ($commentAttributes->Text) {
$this->spreadsheet->getActiveSheet()->getComment((string) $commentAttributes->ObjectBound)
->setAuthor((string) $commentAttributes->Author)
->setText($this->parseRichText((string) $commentAttributes->Text));
}
}
}
}
/**
* @param mixed $value
*/
private static function testSimpleXml($value): SimpleXMLElement
{
return ($value instanceof SimpleXMLElement) ? $value : new SimpleXMLElement('<?xml version="1.0" encoding="UTF-8"?><root></root>');
}
/**
* Loads Spreadsheet from file.
*
* @param string $pFilename
*
* @return Spreadsheet
*/
public function load($pFilename)
{
// Create new Spreadsheet
$spreadsheet = new Spreadsheet();
$spreadsheet->removeSheetByIndex(0);
// Load into this instance
return $this->loadIntoExisting($pFilename, $spreadsheet);
}
/**
* Loads from file into Spreadsheet instance.
*/
public function loadIntoExisting(string $pFilename, Spreadsheet $spreadsheet): Spreadsheet
{
$this->spreadsheet = $spreadsheet;
File::assertFile($pFilename);
$gFileData = $this->gzfileGetContents($pFilename);
$xml2 = simplexml_load_string($this->securityScanner->scan($gFileData), 'SimpleXMLElement', Settings::getLibXmlLoaderOptions());
$xml = self::testSimpleXml($xml2);
$gnmXML = $xml->children(self::NAMESPACE_GNM);
(new Properties($this->spreadsheet))->readProperties($xml, $gnmXML);
$worksheetID = 0;
foreach ($gnmXML->Sheets->Sheet as $sheet) {
$worksheetName = (string) $sheet->Name;
if ((isset($this->loadSheetsOnly)) && (!in_array($worksheetName, $this->loadSheetsOnly))) {
continue;
}
$maxRow = $maxCol = 0;
// Create new Worksheet
$this->spreadsheet->createSheet();
$this->spreadsheet->setActiveSheetIndex($worksheetID);
// Use false for $updateFormulaCellReferences to prevent adjustment of worksheet references in formula
// cells... during the load, all formulae should be correct, and we're simply bringing the worksheet
// name in line with the formula, not the reverse
$this->spreadsheet->getActiveSheet()->setTitle($worksheetName, false, false);
if (!$this->readDataOnly) {
(new PageSetup($this->spreadsheet))
->printInformation($sheet)
->sheetMargins($sheet);
}
foreach ($sheet->Cells->Cell as $cell) {
$cellAttributes = $cell->attributes();
$row = (int) $cellAttributes->Row + 1;
$column = (int) $cellAttributes->Col;
if ($row > $maxRow) {
$maxRow = $row;
}
if ($column > $maxCol) {
$maxCol = $column;
}
$column = Coordinate::stringFromColumnIndex($column + 1);
// Read cell?
if ($this->getReadFilter() !== null) {
if (!$this->getReadFilter()->readCell($column, $row, $worksheetName)) {
continue;
}
}
$ValueType = $cellAttributes->ValueType;
$ExprID = (string) $cellAttributes->ExprID;
$type = DataType::TYPE_FORMULA;
if ($ExprID > '') {
if (((string) $cell) > '') {
$this->expressions[$ExprID] = [
'column' => $cellAttributes->Col,
'row' => $cellAttributes->Row,
'formula' => (string) $cell,
];
} else {
$expression = $this->expressions[$ExprID];
$cell = $this->referenceHelper->updateFormulaReferences(
$expression['formula'],
'A1',
$cellAttributes->Col - $expression['column'],
$cellAttributes->Row - $expression['row'],
$worksheetName
);
}
$type = DataType::TYPE_FORMULA;
} else {
$vtype = (string) $ValueType;
if (array_key_exists($vtype, self::$mappings['dataType'])) {
$type = self::$mappings['dataType'][$vtype];
}
if ($vtype === '20') { // Boolean
$cell = $cell == 'TRUE';
}
}
$this->spreadsheet->getActiveSheet()->getCell($column . $row)->setValueExplicit((string) $cell, $type);
}
if ($sheet->Styles !== null) {
(new Styles($this->spreadsheet, $this->readDataOnly))->read($sheet, $maxRow, $maxCol);
}
$this->processComments($sheet);
$this->processColumnWidths($sheet, $maxCol);
$this->processRowHeights($sheet, $maxRow);
$this->processMergedCells($sheet);
$this->processAutofilter($sheet);
++$worksheetID;
}
$this->processDefinedNames($gnmXML);
// Return
return $this->spreadsheet;
}
private function processMergedCells(?SimpleXMLElement $sheet): void
{
// Handle Merged Cells in this worksheet
if ($sheet !== null && isset($sheet->MergedRegions)) {
foreach ($sheet->MergedRegions->Merge as $mergeCells) {
if (strpos($mergeCells, ':') !== false) {
$this->spreadsheet->getActiveSheet()->mergeCells($mergeCells);
}
}
}
}
private function processAutofilter(?SimpleXMLElement $sheet): void
{
if ($sheet !== null && isset($sheet->Filters)) {
foreach ($sheet->Filters->Filter as $autofilter) {
if ($autofilter !== null) {
$attributes = $autofilter->attributes();
if (isset($attributes['Area'])) {
$this->spreadsheet->getActiveSheet()->setAutoFilter((string) $attributes['Area']);
}
}
}
}
}
private function setColumnWidth(int $whichColumn, float $defaultWidth): void
{
$columnDimension = $this->spreadsheet->getActiveSheet()->getColumnDimension(Coordinate::stringFromColumnIndex($whichColumn + 1));
if ($columnDimension !== null) {
$columnDimension->setWidth($defaultWidth);
}
}
private function setColumnInvisible(int $whichColumn): void
{
$columnDimension = $this->spreadsheet->getActiveSheet()->getColumnDimension(Coordinate::stringFromColumnIndex($whichColumn + 1));
if ($columnDimension !== null) {
$columnDimension->setVisible(false);
}
}
private function processColumnLoop(int $whichColumn, int $maxCol, SimpleXMLElement $columnOverride, float $defaultWidth): int
{
$columnAttributes = self::testSimpleXml($columnOverride->attributes());
$column = $columnAttributes['No'];
$columnWidth = ((float) $columnAttributes['Unit']) / 5.4;
$hidden = (isset($columnAttributes['Hidden'])) && ((string) $columnAttributes['Hidden'] == '1');
$columnCount = (int) ($columnAttributes['Count'] ?? 1);
while ($whichColumn < $column) {
$this->setColumnWidth($whichColumn, $defaultWidth);
++$whichColumn;
}
while (($whichColumn < ($column + $columnCount)) && ($whichColumn <= $maxCol)) {
$this->setColumnWidth($whichColumn, $columnWidth);
if ($hidden) {
$this->setColumnInvisible($whichColumn);
}
++$whichColumn;
}
return $whichColumn;
}
private function processColumnWidths(?SimpleXMLElement $sheet, int $maxCol): void
{
if ((!$this->readDataOnly) && $sheet !== null && (isset($sheet->Cols))) {
// Column Widths
$defaultWidth = 0;
$columnAttributes = $sheet->Cols->attributes();
if ($columnAttributes !== null) {
$defaultWidth = $columnAttributes['DefaultSizePts'] / 5.4;
}
$whichColumn = 0;
foreach ($sheet->Cols->ColInfo as $columnOverride) {
$whichColumn = $this->processColumnLoop($whichColumn, $maxCol, $columnOverride, $defaultWidth);
}
while ($whichColumn <= $maxCol) {
$this->setColumnWidth($whichColumn, $defaultWidth);
++$whichColumn;
}
}
}
private function setRowHeight(int $whichRow, float $defaultHeight): void
{
$rowDimension = $this->spreadsheet->getActiveSheet()->getRowDimension($whichRow);
if ($rowDimension !== null) {
$rowDimension->setRowHeight($defaultHeight);
}
}
private function setRowInvisible(int $whichRow): void
{
$rowDimension = $this->spreadsheet->getActiveSheet()->getRowDimension($whichRow);
if ($rowDimension !== null) {
$rowDimension->setVisible(false);
}
}
private function processRowLoop(int $whichRow, int $maxRow, SimpleXMLElement $rowOverride, float $defaultHeight): int
{
$rowAttributes = self::testSimpleXml($rowOverride->attributes());
$row = $rowAttributes['No'];
$rowHeight = (float) $rowAttributes['Unit'];
$hidden = (isset($rowAttributes['Hidden'])) && ((string) $rowAttributes['Hidden'] == '1');
$rowCount = (int) ($rowAttributes['Count'] ?? 1);
while ($whichRow < $row) {
++$whichRow;
$this->setRowHeight($whichRow, $defaultHeight);
}
while (($whichRow < ($row + $rowCount)) && ($whichRow < $maxRow)) {
++$whichRow;
$this->setRowHeight($whichRow, $rowHeight);
if ($hidden) {
$this->setRowInvisible($whichRow);
}
}
return $whichRow;
}
private function processRowHeights(?SimpleXMLElement $sheet, int $maxRow): void
{
if ((!$this->readDataOnly) && $sheet !== null && (isset($sheet->Rows))) {
// Row Heights
$defaultHeight = 0;
$rowAttributes = $sheet->Rows->attributes();
if ($rowAttributes !== null) {
$defaultHeight = (float) $rowAttributes['DefaultSizePts'];
}
$whichRow = 0;
foreach ($sheet->Rows->RowInfo as $rowOverride) {
$whichRow = $this->processRowLoop($whichRow, $maxRow, $rowOverride, $defaultHeight);
}
// never executed, I can't figure out any circumstances
// under which it would be executed, and, even if
// such exist, I'm not convinced this is needed.
//while ($whichRow < $maxRow) {
// ++$whichRow;
// $this->spreadsheet->getActiveSheet()->getRowDimension($whichRow)->setRowHeight($defaultHeight);
//}
}
}
private function processDefinedNames(?SimpleXMLElement $gnmXML): void
{
// Loop through definedNames (global named ranges)
if ($gnmXML !== null && isset($gnmXML->Names)) {
foreach ($gnmXML->Names->Name as $definedName) {
$name = (string) $definedName->name;
$value = (string) $definedName->value;
if (stripos($value, '#REF!') !== false) {
continue;
}
[$worksheetName] = Worksheet::extractSheetTitle($value, true);
$worksheetName = trim($worksheetName, "'");
$worksheet = $this->spreadsheet->getSheetByName($worksheetName);
// Worksheet might still be null if we're only loading selected sheets rather than the full spreadsheet
if ($worksheet !== null) {
$this->spreadsheet->addDefinedName(DefinedName::createInstance($name, $worksheet, $value));
}
}
}
}
private function parseRichText(string $is): RichText
{
$value = new RichText();
$value->createText($is);
return $value;
}
}