Current File : /home2/selectio/www/a1tex.in/vendor/box/spout/src/Spout/Reader/XLSX/Manager/StyleManager.php
<?php
namespace Box\Spout\Reader\XLSX\Manager;
use Box\Spout\Reader\XLSX\Creator\InternalEntityFactory;
/**
* Class StyleManager
* This class manages XLSX styles
*/
class StyleManager
{
/** Nodes used to find relevant information in the styles XML file */
const XML_NODE_NUM_FMTS = 'numFmts';
const XML_NODE_NUM_FMT = 'numFmt';
const XML_NODE_CELL_XFS = 'cellXfs';
const XML_NODE_XF = 'xf';
/** Attributes used to find relevant information in the styles XML file */
const XML_ATTRIBUTE_NUM_FMT_ID = 'numFmtId';
const XML_ATTRIBUTE_FORMAT_CODE = 'formatCode';
const XML_ATTRIBUTE_APPLY_NUMBER_FORMAT = 'applyNumberFormat';
/** By convention, default style ID is 0 */
const DEFAULT_STYLE_ID = 0;
const NUMBER_FORMAT_GENERAL = 'General';
/**
* @see https://msdn.microsoft.com/en-us/library/ff529597(v=office.12).aspx
* @var array Mapping between built-in numFmtId and the associated format - for dates only
*/
protected static $builtinNumFmtIdToNumFormatMapping = [
14 => 'm/d/yyyy', // @NOTE: ECMA spec is 'mm-dd-yy'
15 => 'd-mmm-yy',
16 => 'd-mmm',
17 => 'mmm-yy',
18 => 'h:mm AM/PM',
19 => 'h:mm:ss AM/PM',
20 => 'h:mm',
21 => 'h:mm:ss',
22 => 'm/d/yyyy h:mm', // @NOTE: ECMA spec is 'm/d/yy h:mm',
45 => 'mm:ss',
46 => '[h]:mm:ss',
47 => 'mm:ss.0', // @NOTE: ECMA spec is 'mmss.0',
];
/** @var string Path of the XLSX file being read */
protected $filePath;
/** @var bool Whether the XLSX file contains a styles XML file */
protected $hasStylesXMLFile;
/** @var string|null Path of the styles XML file */
protected $stylesXMLFilePath;
/** @var InternalEntityFactory Factory to create entities */
protected $entityFactory;
/** @var array Array containing the IDs of built-in number formats indicating a date */
protected $builtinNumFmtIdIndicatingDates;
/** @var array Array containing a mapping NUM_FMT_ID => FORMAT_CODE */
protected $customNumberFormats;
/** @var array Array containing a mapping STYLE_ID => [STYLE_ATTRIBUTES] */
protected $stylesAttributes;
/** @var array Cache containing a mapping NUM_FMT_ID => IS_DATE_FORMAT. Used to avoid lots of recalculations */
protected $numFmtIdToIsDateFormatCache = [];
/**
* @param string $filePath Path of the XLSX file being read
* @param WorkbookRelationshipsManager $workbookRelationshipsManager Helps retrieving workbook relationships
* @param InternalEntityFactory $entityFactory Factory to create entities
*/
public function __construct($filePath, $workbookRelationshipsManager, $entityFactory)
{
$this->filePath = $filePath;
$this->entityFactory = $entityFactory;
$this->builtinNumFmtIdIndicatingDates = \array_keys(self::$builtinNumFmtIdToNumFormatMapping);
$this->hasStylesXMLFile = $workbookRelationshipsManager->hasStylesXMLFile();
if ($this->hasStylesXMLFile) {
$this->stylesXMLFilePath = $workbookRelationshipsManager->getStylesXMLFilePath();
}
}
/**
* Returns whether the style with the given ID should consider
* numeric values as timestamps and format the cell as a date.
*
* @param int $styleId Zero-based style ID
* @return bool Whether the cell with the given cell should display a date instead of a numeric value
*/
public function shouldFormatNumericValueAsDate($styleId)
{
if (!$this->hasStylesXMLFile) {
return false;
}
$stylesAttributes = $this->getStylesAttributes();
// Default style (0) does not format numeric values as timestamps. Only custom styles do.
// Also if the style ID does not exist in the styles.xml file, format as numeric value.
// Using isset here because it is way faster than array_key_exists...
if ($styleId === self::DEFAULT_STYLE_ID || !isset($stylesAttributes[$styleId])) {
return false;
}
$styleAttributes = $stylesAttributes[$styleId];
return $this->doesStyleIndicateDate($styleAttributes);
}
/**
* Reads the styles.xml file and extract the relevant information from the file.
*
* @return void
*/
protected function extractRelevantInfo()
{
$this->customNumberFormats = [];
$this->stylesAttributes = [];
$xmlReader = $this->entityFactory->createXMLReader();
if ($xmlReader->openFileInZip($this->filePath, $this->stylesXMLFilePath)) {
while ($xmlReader->read()) {
if ($xmlReader->isPositionedOnStartingNode(self::XML_NODE_NUM_FMTS)) {
$this->extractNumberFormats($xmlReader);
} elseif ($xmlReader->isPositionedOnStartingNode(self::XML_NODE_CELL_XFS)) {
$this->extractStyleAttributes($xmlReader);
}
}
$xmlReader->close();
}
}
/**
* Extracts number formats from the "numFmt" nodes.
* For simplicity, the styles attributes are kept in memory. This is possible thanks
* to the reuse of formats. So 1 million cells should not use 1 million formats.
*
* @param \Box\Spout\Reader\Wrapper\XMLReader $xmlReader XML Reader positioned on the "numFmts" node
* @return void
*/
protected function extractNumberFormats($xmlReader)
{
while ($xmlReader->read()) {
if ($xmlReader->isPositionedOnStartingNode(self::XML_NODE_NUM_FMT)) {
$numFmtId = (int) ($xmlReader->getAttribute(self::XML_ATTRIBUTE_NUM_FMT_ID));
$formatCode = $xmlReader->getAttribute(self::XML_ATTRIBUTE_FORMAT_CODE);
$this->customNumberFormats[$numFmtId] = $formatCode;
} elseif ($xmlReader->isPositionedOnEndingNode(self::XML_NODE_NUM_FMTS)) {
// Once done reading "numFmts" node's children
break;
}
}
}
/**
* Extracts style attributes from the "xf" nodes, inside the "cellXfs" section.
* For simplicity, the styles attributes are kept in memory. This is possible thanks
* to the reuse of styles. So 1 million cells should not use 1 million styles.
*
* @param \Box\Spout\Reader\Wrapper\XMLReader $xmlReader XML Reader positioned on the "cellXfs" node
* @return void
*/
protected function extractStyleAttributes($xmlReader)
{
while ($xmlReader->read()) {
if ($xmlReader->isPositionedOnStartingNode(self::XML_NODE_XF)) {
$numFmtId = $xmlReader->getAttribute(self::XML_ATTRIBUTE_NUM_FMT_ID);
$normalizedNumFmtId = ($numFmtId !== null) ? (int) $numFmtId : null;
$applyNumberFormat = $xmlReader->getAttribute(self::XML_ATTRIBUTE_APPLY_NUMBER_FORMAT);
$normalizedApplyNumberFormat = ($applyNumberFormat !== null) ? (bool) $applyNumberFormat : null;
$this->stylesAttributes[] = [
self::XML_ATTRIBUTE_NUM_FMT_ID => $normalizedNumFmtId,
self::XML_ATTRIBUTE_APPLY_NUMBER_FORMAT => $normalizedApplyNumberFormat,
];
} elseif ($xmlReader->isPositionedOnEndingNode(self::XML_NODE_CELL_XFS)) {
// Once done reading "cellXfs" node's children
break;
}
}
}
/**
* @return array The custom number formats
*/
protected function getCustomNumberFormats()
{
if (!isset($this->customNumberFormats)) {
$this->extractRelevantInfo();
}
return $this->customNumberFormats;
}
/**
* @return array The styles attributes
*/
protected function getStylesAttributes()
{
if (!isset($this->stylesAttributes)) {
$this->extractRelevantInfo();
}
return $this->stylesAttributes;
}
/**
* @param array $styleAttributes Array containing the style attributes (2 keys: "applyNumberFormat" and "numFmtId")
* @return bool Whether the style with the given attributes indicates that the number is a date
*/
protected function doesStyleIndicateDate($styleAttributes)
{
$applyNumberFormat = $styleAttributes[self::XML_ATTRIBUTE_APPLY_NUMBER_FORMAT];
$numFmtId = $styleAttributes[self::XML_ATTRIBUTE_NUM_FMT_ID];
// A style may apply a date format if it has:
// - "applyNumberFormat" attribute not set to "false"
// - "numFmtId" attribute set
// This is a preliminary check, as having "numFmtId" set just means the style should apply a specific number format,
// but this is not necessarily a date.
if ($applyNumberFormat === false || $numFmtId === null) {
return false;
}
return $this->doesNumFmtIdIndicateDate($numFmtId);
}
/**
* Returns whether the number format ID indicates that the number is a date.
* The result is cached to avoid recomputing the same thing over and over, as
* "numFmtId" attributes can be shared between multiple styles.
*
* @param int $numFmtId
* @return bool Whether the number format ID indicates that the number is a date
*/
protected function doesNumFmtIdIndicateDate($numFmtId)
{
if (!isset($this->numFmtIdToIsDateFormatCache[$numFmtId])) {
$formatCode = $this->getFormatCodeForNumFmtId($numFmtId);
$this->numFmtIdToIsDateFormatCache[$numFmtId] = (
$this->isNumFmtIdBuiltInDateFormat($numFmtId) ||
$this->isFormatCodeCustomDateFormat($formatCode)
);
}
return $this->numFmtIdToIsDateFormatCache[$numFmtId];
}
/**
* @param int $numFmtId
* @return string|null The custom number format or NULL if none defined for the given numFmtId
*/
protected function getFormatCodeForNumFmtId($numFmtId)
{
$customNumberFormats = $this->getCustomNumberFormats();
// Using isset here because it is way faster than array_key_exists...
return (isset($customNumberFormats[$numFmtId])) ? $customNumberFormats[$numFmtId] : null;
}
/**
* @param int $numFmtId
* @return bool Whether the number format ID indicates that the number is a date
*/
protected function isNumFmtIdBuiltInDateFormat($numFmtId)
{
return \in_array($numFmtId, $this->builtinNumFmtIdIndicatingDates);
}
/**
* @param string|null $formatCode
* @return bool Whether the given format code indicates that the number is a date
*/
protected function isFormatCodeCustomDateFormat($formatCode)
{
// if no associated format code or if using the default "General" format
if ($formatCode === null || \strcasecmp($formatCode, self::NUMBER_FORMAT_GENERAL) === 0) {
return false;
}
return $this->isFormatCodeMatchingDateFormatPattern($formatCode);
}
/**
* @param string $formatCode
* @return bool Whether the given format code matches a date format pattern
*/
protected function isFormatCodeMatchingDateFormatPattern($formatCode)
{
// Remove extra formatting (what's between [ ], the brackets should not be preceded by a "\")
$pattern = '((?<!\\\)\[.+?(?<!\\\)\])';
$formatCode = \preg_replace($pattern, '', $formatCode);
// custom date formats contain specific characters to represent the date:
// e - yy - m - d - h - s
// and all of their variants (yyyy - mm - dd...)
$dateFormatCharacters = ['e', 'yy', 'm', 'd', 'h', 's'];
$hasFoundDateFormatCharacter = false;
foreach ($dateFormatCharacters as $dateFormatCharacter) {
// character not preceded by "\" (case insensitive)
$pattern = '/(?<!\\\)' . $dateFormatCharacter . '/i';
if (\preg_match($pattern, $formatCode)) {
$hasFoundDateFormatCharacter = true;
break;
}
}
return $hasFoundDateFormatCharacter;
}
/**
* Returns the format as defined in "styles.xml" of the given style.
* NOTE: It is assumed that the style DOES have a number format associated to it.
*
* @param int $styleId Zero-based style ID
* @return string The number format code associated with the given style
*/
public function getNumberFormatCode($styleId)
{
$stylesAttributes = $this->getStylesAttributes();
$styleAttributes = $stylesAttributes[$styleId];
$numFmtId = $styleAttributes[self::XML_ATTRIBUTE_NUM_FMT_ID];
if ($this->isNumFmtIdBuiltInDateFormat($numFmtId)) {
$numberFormatCode = self::$builtinNumFmtIdToNumFormatMapping[$numFmtId];
} else {
$customNumberFormats = $this->getCustomNumberFormats();
$numberFormatCode = $customNumberFormats[$numFmtId];
}
return $numberFormatCode;
}
}
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