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当前路径:Classes/PHPExcel/Cell.php
<?php

/**
 *    PHPExcel_Cell
 *
 *    Copyright (c) 2006 - 2015 PHPExcel
 *
 *    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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *    @category    PHPExcel
 *    @package    PHPExcel_Cell
 *    @copyright    Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
 *    @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 *    @version    ##VERSION##, ##DATE##
 */
class PHPExcel_Cell
{
    /**
     *  Default range variable constant
     *
     *  @var  string
     */
    const DEFAULT_RANGE = 'A1:A1';

    /**
     *    Value binder to use
     *
     *    @var    PHPExcel_Cell_IValueBinder
     */
    private static $valueBinder;

    /**
     *    Value of the cell
     *
     *    @var    mixed
     */
    private $value;

    /**
     *    Calculated value of the cell (used for caching)
     *    This returns the value last calculated by MS Excel or whichever spreadsheet program was used to
     *        create the original spreadsheet file.
     *    Note that this value is not guaranteed to reflect the actual calculated value because it is
     *        possible that auto-calculation was disabled in the original spreadsheet, and underlying data
     *        values used by the formula have changed since it was last calculated.
     *
     *    @var mixed
     */
    private $calculatedValue;

    /**
     *    Type of the cell data
     *
     *    @var    string
     */
    private $dataType;

    /**
     *    Parent worksheet
     *
     *    @var    PHPExcel_CachedObjectStorage_CacheBase
     */
    private $parent;

    /**
     *    Index to cellXf
     *
     *    @var    int
     */
    private $xfIndex = 0;

    /**
     *    Attributes of the formula
     *
     */
    private $formulaAttributes;


    /**
     *    Send notification to the cache controller
     *
     *    @return void
     **/
    public function notifyCacheController()
    {
        $this->parent->updateCacheData($this);

        return $this;
    }

    public function detach()
    {
        $this->parent = null;
    }

    public function attach(PHPExcel_CachedObjectStorage_CacheBase $parent)
    {
        $this->parent = $parent;
    }


    /**
     *    Create a new Cell
     *
     *    @param    mixed                $pValue
     *    @param    string                $pDataType
     *    @param    PHPExcel_Worksheet    $pSheet
     *    @throws    PHPExcel_Exception
     */
    public function __construct($pValue = null, $pDataType = null, PHPExcel_Worksheet $pSheet = null)
    {
        // Initialise cell value
        $this->value = $pValue;

        // Set worksheet cache
        $this->parent = $pSheet->getCellCacheController();

        // Set datatype?
        if ($pDataType !== null) {
            if ($pDataType == PHPExcel_Cell_DataType::TYPE_STRING2) {
                $pDataType = PHPExcel_Cell_DataType::TYPE_STRING;
            }
            $this->dataType = $pDataType;
        } elseif (!self::getValueBinder()->bindValue($this, $pValue)) {
            throw new PHPExcel_Exception("Value could not be bound to cell.");
        }
    }

    /**
     *    Get cell coordinate column
     *
     *    @return    string
     */
    public function getColumn()
    {
        return $this->parent->getCurrentColumn();
    }

    /**
     *    Get cell coordinate row
     *
     *    @return    int
     */
    public function getRow()
    {
        return $this->parent->getCurrentRow();
    }

    /**
     *    Get cell coordinate
     *
     *    @return    string
     */
    public function getCoordinate()
    {
        return $this->parent->getCurrentAddress();
    }

    /**
     *    Get cell value
     *
     *    @return    mixed
     */
    public function getValue()
    {
        return $this->value;
    }

    /**
     *    Get cell value with formatting
     *
     *    @return    string
     */
    public function getFormattedValue()
    {
        return (string) PHPExcel_Style_NumberFormat::toFormattedString(
            $this->getCalculatedValue(),
            $this->getStyle()
                ->getNumberFormat()->getFormatCode()
        );
    }

    /**
     *    Set cell value
     *
     *    Sets the value for a cell, automatically determining the datatype using the value binder
     *
     *    @param    mixed    $pValue                    Value
     *    @return    PHPExcel_Cell
     *    @throws    PHPExcel_Exception
     */
    public function setValue($pValue = null)
    {
        if (!self::getValueBinder()->bindValue($this, $pValue)) {
            throw new PHPExcel_Exception("Value could not be bound to cell.");
        }
        return $this;
    }

    /**
     *    Set the value for a cell, with the explicit data type passed to the method (bypassing any use of the value binder)
     *
     *    @param    mixed    $pValue            Value
     *    @param    string    $pDataType        Explicit data type
     *    @return    PHPExcel_Cell
     *    @throws    PHPExcel_Exception
     */
    public function setValueExplicit($pValue = null, $pDataType = PHPExcel_Cell_DataType::TYPE_STRING)
    {
        // set the value according to data type
        switch ($pDataType) {
            case PHPExcel_Cell_DataType::TYPE_NULL:
                $this->value = $pValue;
                break;
            case PHPExcel_Cell_DataType::TYPE_STRING2:
                $pDataType = PHPExcel_Cell_DataType::TYPE_STRING;
                // no break
            case PHPExcel_Cell_DataType::TYPE_STRING:
                // Synonym for string
            case PHPExcel_Cell_DataType::TYPE_INLINE:
                // Rich text
                $this->value = PHPExcel_Cell_DataType::checkString($pValue);
                break;
            case PHPExcel_Cell_DataType::TYPE_NUMERIC:
                $this->value = (float) $pValue;
                break;
            case PHPExcel_Cell_DataType::TYPE_FORMULA:
                $this->value = (string) $pValue;
    ...
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