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Add support for 1904 dates

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This commit adds support for dates using the 1904 calendar (starting 1904-01-01 00:00:00).
It also fixes some issues with the dates in 1900 calendar (which now correctly start at 1899-12-30 00:00:00).
Finally, it is now possible to have negative timestamps, representing dates before the base date (and up to 0000-01-01 00:00:00), as per the SpreadsheetML specs. Note that some versions of Excel don't support negative dates...
This commit is contained in:
Adrien Loison committed 2017-11-04 16:33:46 +01:00
1 parent e1ae3c8a81
commit c74c0d9127
9 files changed
+194 -102
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src/Spout/Reader/XLSX/Creator/EntityFactory.php
+8 -1
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@@ -85,7 +85,14 @@ class EntityFactory implements EntityFactoryInterface
$styleManager = $this->managerFactory->createStyleManager($filePath, $this);
$shouldFormatDates = $optionsManager->getOption(Options::SHOULD_FORMAT_DATES);
$cellValueFormatter = $this->helperFactory->createCellValueFormatter($sharedStringsManager, $styleManager, $shouldFormatDates);
$shouldUse1904Dates = $optionsManager->getOption(Options::SHOULD_USE_1904_DATES);
$cellValueFormatter = $this->helperFactory->createCellValueFormatter(
$sharedStringsManager,
$styleManager,
$shouldFormatDates,
$shouldUse1904Dates
);
$shouldPreserveEmptyRows = $optionsManager->getOption(Options::SHOULD_PRESERVE_EMPTY_ROWS);
src/Spout/Reader/XLSX/Creator/HelperFactory.php
+3 -2
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@@ -17,13 +17,14 @@ class HelperFactory extends \Box\Spout\Common\Creator\HelperFactory
* @param SharedStringsManager $sharedStringsManager Manages shared strings
* @param StyleManager $styleManager Manages styles
* @param bool $shouldFormatDates Whether date/time values should be returned as PHP objects or be formatted as strings
* @param bool $shouldUse1904Dates Whether date/time values should use a calendar starting in 1904 instead of 1900
* @return CellValueFormatter
*/
public function createCellValueFormatter($sharedStringsManager, $styleManager, $shouldFormatDates)
public function createCellValueFormatter($sharedStringsManager, $styleManager, $shouldFormatDates, $shouldUse1904Dates)
{
$escaper = $this->createStringsEscaper();
return new CellValueFormatter($sharedStringsManager, $styleManager, $shouldFormatDates, $escaper);
return new CellValueFormatter($sharedStringsManager, $styleManager, $shouldFormatDates, $shouldUse1904Dates, $escaper);
}
/**
src/Spout/Reader/XLSX/Helper/CellValueFormatter.php
+39 -56
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@@ -48,6 +48,9 @@ class CellValueFormatter
/** @var bool Whether date/time values should be returned as PHP objects or be formatted as strings */
protected $shouldFormatDates;
/** @var bool Whether date/time values should use a calendar starting in 1904 instead of 1900 */
protected $shouldUse1904Dates;
/** @var \Box\Spout\Common\Helper\Escaper\XLSX Used to unescape XML data */
protected $escaper;
@@ -55,13 +58,15 @@ class CellValueFormatter
* @param SharedStringsManager $sharedStringsManager Manages shared strings
* @param StyleManager $styleManager Manages styles
* @param bool $shouldFormatDates Whether date/time values should be returned as PHP objects or be formatted as strings
* @param bool $shouldUse1904Dates Whether date/time values should use a calendar starting in 1904 instead of 1900
* @param \Box\Spout\Common\Helper\Escaper\XLSX $escaper Used to unescape XML data
*/
public function __construct($sharedStringsManager, $styleManager, $shouldFormatDates, $escaper)
public function __construct($sharedStringsManager, $styleManager, $shouldFormatDates, $shouldUse1904Dates, $escaper)
{
$this->sharedStringsManager = $sharedStringsManager;
$this->styleManager = $styleManager;
$this->shouldFormatDates = $shouldFormatDates;
$this->shouldUse1904Dates = $shouldUse1904Dates;
$this->escaper = $escaper;
}
@@ -189,26 +194,20 @@ class CellValueFormatter
/**
* Returns a cell's PHP Date value, associated to the given timestamp.
* NOTE: The timestamp is a float representing the number of days since January 1st, 1900.
* NOTE: The timestamp is a float representing the number of days since the base Excel date:
* Dec 30th 1899, 1900 or Jan 1st, 1904, depending on the Workbook setting.
* NOTE: The timestamp can also represent a time, if it is a value between 0 and 1.
*
* @see ECMA-376 Part 1 - §18.17.4
*
* @param float $nodeValue
* @param int $cellStyleId 0 being the default style
* @return \DateTime|null The value associated with the cell or NULL if invalid date value
*/
protected function formatExcelTimestampValue($nodeValue, $cellStyleId)
{
// Fix for the erroneous leap year in Excel
if (ceil($nodeValue) > self::ERRONEOUS_EXCEL_LEAP_YEAR_DAY) {
$nodeValue--;
}
if ($nodeValue >= 1) {
// Values greater than 1 represent "dates". The value 1.0 representing the "base" date: 1900-01-01.
$cellValue = $this->formatExcelTimestampValueAsDateValue($nodeValue, $cellStyleId);
} elseif ($nodeValue >= 0) {
// Values between 0 and 1 represent "times".
$cellValue = $this->formatExcelTimestampValueAsTimeValue($nodeValue, $cellStyleId);
if ($this->isValidTimestampValue($nodeValue)) {
$cellValue = $this->formatExcelTimestampValueAsDateTimeValue($nodeValue, $cellStyleId);
} else {
// invalid date
$cellValue = null;
@@ -217,24 +216,42 @@ class CellValueFormatter
return $cellValue;
}
/**
* Returns whether the given timestamp is supported by SpreadsheetML
* @see ECMA-376 Part 1 - §18.17.4 - this specifies the timestamp boundaries.
*
* @param float $timestampValue
* @return bool
*/
protected function isValidTimestampValue($timestampValue)
{
// @NOTE: some versions of Excel don't support negative dates (e.g. Excel for Mac 2011)
return (
$this->shouldUse1904Dates && $timestampValue >= -695055 && $timestampValue <= 2957003.9999884 ||
!$this->shouldUse1904Dates && $timestampValue >= -693593 && $timestampValue <= 2958465.9999884
);
}
/**
* Returns a cell's PHP DateTime value, associated to the given timestamp.
* Only the time value matters. The date part is set to Jan 1st, 1900 (base Excel date).
* Only the time value matters. The date part is set to the base Excel date:
* Dec 30th 1899, 1900 or Jan 1st, 1904, depending on the Workbook setting.
*
* @param float $nodeValue
* @param int $cellStyleId 0 being the default style
* @return \DateTime|string The value associated with the cell
*/
protected function formatExcelTimestampValueAsTimeValue($nodeValue, $cellStyleId)
protected function formatExcelTimestampValueAsDateTimeValue($nodeValue, $cellStyleId)
{
$time = round($nodeValue * self::NUM_SECONDS_IN_ONE_DAY);
$hours = floor($time / self::NUM_SECONDS_IN_ONE_HOUR);
$minutes = floor($time / self::NUM_SECONDS_IN_ONE_MINUTE) - ($hours * self::NUM_SECONDS_IN_ONE_MINUTE);
$seconds = $time - ($hours * self::NUM_SECONDS_IN_ONE_HOUR) - ($minutes * self::NUM_SECONDS_IN_ONE_MINUTE);
$baseDate = $this->shouldUse1904Dates ? '1904-01-01' : '1899-12-30';
// using the base Excel date (Jan 1st, 1900) - not relevant here
$dateObj = new \DateTime('1900-01-01');
$dateObj->setTime($hours, $minutes, $seconds);
$daysSinceBaseDate = (int) $nodeValue;
$timeRemainder = fmod($nodeValue, 1);
$secondsRemainder = round($timeRemainder * self::NUM_SECONDS_IN_ONE_DAY, 0);
$dateObj = \DateTime::createFromFormat('|Y-m-d', $baseDate);
$dateObj->modify('+' . $daysSinceBaseDate . 'days');
$dateObj->modify('+' . $secondsRemainder . 'seconds');
if ($this->shouldFormatDates) {
$styleNumberFormatCode = $this->styleManager->getNumberFormatCode($cellStyleId);
@@ -247,40 +264,6 @@ class CellValueFormatter
return $cellValue;
}
/**
* Returns a cell's PHP Date value, associated to the given timestamp.
* NOTE: The timestamp is a float representing the number of days since January 1st, 1900.
*
* @param float $nodeValue
* @param int $cellStyleId 0 being the default style
* @return \DateTime|string|null The value associated with the cell or NULL if invalid date value
*/
protected function formatExcelTimestampValueAsDateValue($nodeValue, $cellStyleId)
{
// Do not use any unix timestamps for calculation to prevent
// issues with numbers exceeding 2^31.
$secondsRemainder = fmod($nodeValue, 1) * self::NUM_SECONDS_IN_ONE_DAY;
$secondsRemainder = round($secondsRemainder, 0);
try {
$dateObj = \DateTime::createFromFormat('|Y-m-d', '1899-12-31');
$dateObj->modify('+' . (int) $nodeValue . 'days');
$dateObj->modify('+' . $secondsRemainder . 'seconds');
if ($this->shouldFormatDates) {
$styleNumberFormatCode = $this->styleManager->getNumberFormatCode($cellStyleId);
$phpDateFormat = DateFormatHelper::toPHPDateFormat($styleNumberFormatCode);
$cellValue = $dateObj->format($phpDateFormat);
} else {
$cellValue = $dateObj;
}
} catch (\Exception $e) {
$cellValue = null;
}
return $cellValue;
}
/**
* Returns the cell Boolean value from a specific node's Value.
*
src/Spout/Reader/XLSX/Manager/OptionsManager.php
+2
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@@ -20,6 +20,7 @@ class OptionsManager extends OptionsManagerAbstract
Options::TEMP_FOLDER,
Options::SHOULD_FORMAT_DATES,
Options::SHOULD_PRESERVE_EMPTY_ROWS,
Options::SHOULD_USE_1904_DATES,
];
}
@@ -31,5 +32,6 @@ class OptionsManager extends OptionsManagerAbstract
$this->setOption(Options::TEMP_FOLDER, sys_get_temp_dir());
$this->setOption(Options::SHOULD_FORMAT_DATES, false);
$this->setOption(Options::SHOULD_PRESERVE_EMPTY_ROWS, false);
$this->setOption(Options::SHOULD_USE_1904_DATES, false);
}
}
src/Spout/Reader/XLSX/Manager/SheetManager.php
+70 -19
View File
@@ -2,6 +2,8 @@
namespace Box\Spout\Reader\XLSX\Manager;
use Box\Spout\Reader\Common\Entity\Options;
use Box\Spout\Reader\Common\XMLProcessor;
use Box\Spout\Reader\XLSX\Creator\EntityFactory;
use Box\Spout\Reader\XLSX\Sheet;
@@ -16,12 +18,14 @@ class SheetManager
const WORKBOOK_XML_FILE_PATH = 'xl/workbook.xml';
/** Definition of XML node names used to parse data */
const XML_NODE_WORKBOOK_PROPERTIES = 'workbookPr';
const XML_NODE_WORKBOOK_VIEW = 'workbookView';
const XML_NODE_SHEET = 'sheet';
const XML_NODE_SHEETS = 'sheets';
const XML_NODE_RELATIONSHIP = 'Relationship';
/** Definition of XML attributes used to parse data */
const XML_ATTRIBUTE_DATE_1904 = 'date1904';
const XML_ATTRIBUTE_ACTIVE_TAB = 'activeTab';
const XML_ATTRIBUTE_R_ID = 'r:id';
const XML_ATTRIBUTE_NAME = 'name';
@@ -46,6 +50,15 @@ class SheetManager
/** @var \Box\Spout\Common\Helper\Escaper\XLSX Used to unescape XML data */
protected $escaper;
/** @var array List of sheets */
protected $sheets;
/** @var int Index of the sheet currently read */
protected $currentSheetIndex;
/** @var int Index of the active sheet (0 by default) */
protected $activeSheetIndex;
/**
* @param string $filePath Path of the XLSX file being read
* @param \Box\Spout\Common\Manager\OptionsManagerInterface $optionsManager Reader's options manager
@@ -71,32 +84,70 @@ class SheetManager
*/
public function getSheets()
{
$sheets = [];
$sheetIndex = 0;
$activeSheetIndex = 0; // By default, the first sheet is active
$this->sheets = [];
$this->currentSheetIndex = 0;
$this->activeSheetIndex = 0; // By default, the first sheet is active
$xmlReader = $this->entityFactory->createXMLReader();
$xmlProcessor = $this->entityFactory->createXMLProcessor($xmlReader);
$xmlProcessor->registerCallback(self::XML_NODE_WORKBOOK_PROPERTIES, XMLProcessor::NODE_TYPE_START, [$this, 'processWorkbookPropertiesStartingNode']);
$xmlProcessor->registerCallback(self::XML_NODE_WORKBOOK_VIEW, XMLProcessor::NODE_TYPE_START, [$this, 'processWorkbookViewStartingNode']);
$xmlProcessor->registerCallback(self::XML_NODE_SHEET, XMLProcessor::NODE_TYPE_START, [$this, 'processSheetStartingNode']);
$xmlProcessor->registerCallback(self::XML_NODE_SHEETS, XMLProcessor::NODE_TYPE_END, [$this, 'processSheetsEndingNode']);
if ($xmlReader->openFileInZip($this->filePath, self::WORKBOOK_XML_FILE_PATH)) {
while ($xmlReader->read()) {
if ($xmlReader->isPositionedOnStartingNode(self::XML_NODE_WORKBOOK_VIEW)) {
// The "workbookView" node is located before "sheet" nodes, ensuring that
// the active sheet is known before parsing sheets data.
$activeSheetIndex = (int) $xmlReader->getAttribute(self::XML_ATTRIBUTE_ACTIVE_TAB);
} elseif ($xmlReader->isPositionedOnStartingNode(self::XML_NODE_SHEET)) {
$isSheetActive = ($sheetIndex === $activeSheetIndex);
$sheets[] = $this->getSheetFromSheetXMLNode($xmlReader, $sheetIndex, $isSheetActive);
$sheetIndex++;
} elseif ($xmlReader->isPositionedOnEndingNode(self::XML_NODE_SHEETS)) {
// stop reading once all sheets have been read
break;
}
}
$xmlProcessor->readUntilStopped();
$xmlReader->close();
}
return $sheets;
return $this->sheets;
}
/**
* @param \Box\Spout\Reader\Wrapper\XMLReader $xmlReader XMLReader object, positioned on a "<workbookPr>" starting node
* @return int A return code that indicates what action should the processor take next
*/
protected function processWorkbookPropertiesStartingNode($xmlReader)
{
$shouldUse1904Dates = (bool) $xmlReader->getAttribute(self::XML_ATTRIBUTE_DATE_1904);
$this->optionsManager->setOption(Options::SHOULD_USE_1904_DATES, $shouldUse1904Dates);
return XMLProcessor::PROCESSING_CONTINUE;
}
/**
* @param \Box\Spout\Reader\Wrapper\XMLReader $xmlReader XMLReader object, positioned on a "<workbookView>" starting node
* @return int A return code that indicates what action should the processor take next
*/
protected function processWorkbookViewStartingNode($xmlReader)
{
// The "workbookView" node is located before "sheet" nodes, ensuring that
// the active sheet is known before parsing sheets data.
$this->activeSheetIndex = (int) $xmlReader->getAttribute(self::XML_ATTRIBUTE_ACTIVE_TAB);
return XMLProcessor::PROCESSING_CONTINUE;
}
/**
* @param \Box\Spout\Reader\Wrapper\XMLReader $xmlReader XMLReader object, positioned on a "<sheet>" starting node
* @return int A return code that indicates what action should the processor take next
*/
protected function processSheetStartingNode($xmlReader)
{
$isSheetActive = ($this->currentSheetIndex === $this->activeSheetIndex);
$this->sheets[] = $this->getSheetFromSheetXMLNode($xmlReader, $this->currentSheetIndex, $isSheetActive);
$this->currentSheetIndex++;
return XMLProcessor::PROCESSING_CONTINUE;
}
/**
* @return int A return code that indicates what action should the processor take next
*/
protected function processSheetsEndingNode()
{
return XMLProcessor::PROCESSING_STOP;
}
/**