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Filename : SYLK.php
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<?php
/**
 * PHPExcel
 *
 * Copyright (c) 2006 - 2014 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_Reader
 * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
 * @version    ##VERSION##, ##DATE##
 */


/** PHPExcel root directory */
if (!defined('PHPEXCEL_ROOT')) {
	/**
	 * @ignore
	 */
	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
}

/**
 * PHPExcel_Reader_SYLK
 *
 * @category   PHPExcel
 * @package    PHPExcel_Reader
 * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_Reader_SYLK extends PHPExcel_Reader_Abstract implements PHPExcel_Reader_IReader
{
	/**
	 * Input encoding
	 *
	 * @var string
	 */
	private $_inputEncoding	= 'ANSI';

	/**
	 * Sheet index to read
	 *
	 * @var int
	 */
	private $_sheetIndex 	= 0;

	/**
	 * Formats
	 *
	 * @var array
	 */
	private $_formats = array();

	/**
	 * Format Count
	 *
	 * @var int
	 */
	private $_format = 0;

	/**
	 * Create a new PHPExcel_Reader_SYLK
	 */
	public function __construct() {
		$this->_readFilter 	= new PHPExcel_Reader_DefaultReadFilter();
	}

	/**
	 * Validate that the current file is a SYLK file
	 *
	 * @return boolean
	 */
	protected function _isValidFormat()
	{
		// Read sample data (first 2 KB will do)
		$data = fread($this->_fileHandle, 2048);

		// Count delimiters in file
		$delimiterCount = substr_count($data, ';');
		if ($delimiterCount < 1) {
			return FALSE;
		}

		// Analyze first line looking for ID; signature
		$lines = explode("\n", $data);
		if (substr($lines[0],0,4) != 'ID;P') {
			return FALSE;
		}

		return TRUE;
	}

	/**
	 * Set input encoding
	 *
	 * @param string $pValue Input encoding
	 */
	public function setInputEncoding($pValue = 'ANSI')
	{
		$this->_inputEncoding = $pValue;
		return $this;
	}

	/**
	 * Get input encoding
	 *
	 * @return string
	 */
	public function getInputEncoding()
	{
		return $this->_inputEncoding;
	}

	/**
	 * Return worksheet info (Name, Last Column Letter, Last Column Index, Total Rows, Total Columns)
	 *
	 * @param   string     $pFilename
	 * @throws   PHPExcel_Reader_Exception
	 */
	public function listWorksheetInfo($pFilename)
	{
		// Open file
		$this->_openFile($pFilename);
		if (!$this->_isValidFormat()) {
			fclose ($this->_fileHandle);
			throw new PHPExcel_Reader_Exception($pFilename . " is an Invalid Spreadsheet file.");
		}
		$fileHandle = $this->_fileHandle;
		rewind($fileHandle);

		$worksheetInfo = array();
		$worksheetInfo[0]['worksheetName'] = 'Worksheet';
		$worksheetInfo[0]['lastColumnLetter'] = 'A';
		$worksheetInfo[0]['lastColumnIndex'] = 0;
		$worksheetInfo[0]['totalRows'] = 0;
		$worksheetInfo[0]['totalColumns'] = 0;

		// Loop through file
		$rowData = array();

		// loop through one row (line) at a time in the file
		$rowIndex = 0;
		while (($rowData = fgets($fileHandle)) !== FALSE) {
			$columnIndex = 0;

			// convert SYLK encoded $rowData to UTF-8
			$rowData = PHPExcel_Shared_String::SYLKtoUTF8($rowData);

			// explode each row at semicolons while taking into account that literal semicolon (;)
			// is escaped like this (;;)
			$rowData = explode("\t",str_replace('¤',';',str_replace(';',"\t",str_replace(';;','¤',rtrim($rowData)))));

			$dataType = array_shift($rowData);
			if ($dataType == 'C') {
				//  Read cell value data
				foreach($rowData as $rowDatum) {
					switch($rowDatum{0}) {
						case 'C' :
						case 'X' :
							$columnIndex = substr($rowDatum,1) - 1;
							break;
						case 'R' :
						case 'Y' :
							$rowIndex = substr($rowDatum,1);
							break;
					}

					$worksheetInfo[0]['totalRows'] = max($worksheetInfo[0]['totalRows'], $rowIndex);
					$worksheetInfo[0]['lastColumnIndex'] = max($worksheetInfo[0]['lastColumnIndex'], $columnIndex);
				}
			}
		}

		$worksheetInfo[0]['lastColumnLetter'] = PHPExcel_Cell::stringFromColumnIndex($worksheetInfo[0]['lastColumnIndex']);
		$worksheetInfo[0]['totalColumns'] = $worksheetInfo[0]['lastColumnIndex'] + 1;

		// Close file
		fclose($fileHandle);

		return $worksheetInfo;
	}

	/**
	 * Loads PHPExcel from file
	 *
	 * @param 	string 		$pFilename
	 * @return 	PHPExcel
	 * @throws 	PHPExcel_Reader_Exception
	 */
	public function load($pFilename)
	{
		// Create new PHPExcel
		$objPHPExcel = new PHPExcel();

		// Load into this instance
		return $this->loadIntoExisting($pFilename, $objPHPExcel);
	}

	/**
	 * Loads PHPExcel from file into PHPExcel instance
	 *
	 * @param 	string 		$pFilename
	 * @param	PHPExcel	$objPHPExcel
	 * @return 	PHPExcel
	 * @throws 	PHPExcel_Reader_Exception
	 */
	public function loadIntoExisting($pFilename, PHPExcel $objPHPExcel)
	{
		// Open file
		$this->_openFile($pFilename);
		if (!$this->_isValidFormat()) {
			fclose ($this->_fileHandle);
			throw new PHPExcel_Reader_Exception($pFilename . " is an Invalid Spreadsheet file.");
		}
		$fileHandle = $this->_fileHandle;
		rewind($fileHandle);

		// Create new PHPExcel
		while ($objPHPExcel->getSheetCount() <= $this->_sheetIndex) {
			$objPHPExcel->createSheet();
		}
		$objPHPExcel->setActiveSheetIndex( $this->_sheetIndex );

		$fromFormats	= array('\-',	'\ ');
		$toFormats		= array('-',	' ');

		// Loop through file
		$rowData = array();
		$column = $row = '';

		// loop through one row (line) at a time in the file
		while (($rowData = fgets($fileHandle)) !== FALSE) {

			// convert SYLK encoded $rowData to UTF-8
			$rowData = PHPExcel_Shared_String::SYLKtoUTF8($rowData);

			// explode each row at semicolons while taking into account that literal semicolon (;)
			// is escaped like this (;;)
			$rowData = explode("\t",str_replace('¤',';',str_replace(';',"\t",str_replace(';;','¤',rtrim($rowData)))));

			$dataType = array_shift($rowData);
			//	Read shared styles
			if ($dataType == 'P') {
				$formatArray = array();
				foreach($rowData as $rowDatum) {
					switch($rowDatum{0}) {
						case 'P' :	$formatArray['numberformat']['code'] = str_replace($fromFormats,$toFormats,substr($rowDatum,1));
									break;
						case 'E' :
						case 'F' :	$formatArray['font']['name'] = substr($rowDatum,1);
									break;
						case 'L' :	$formatArray['font']['size'] = substr($rowDatum,1);
									break;
						case 'S' :	$styleSettings = substr($rowDatum,1);
									for ($i=0;$i<strlen($styleSettings);++$i) {
										switch ($styleSettings{$i}) {
											case 'I' :	$formatArray['font']['italic'] = true;
														break;
											case 'D' :	$formatArray['font']['bold'] = true;
														break;
											case 'T' :	$formatArray['borders']['top']['style'] = PHPExcel_Style_Border::BORDER_THIN;
														break;
											case 'B' :	$formatArray['borders']['bottom']['style'] = PHPExcel_Style_Border::BORDER_THIN;
														break;
											case 'L' :	$formatArray['borders']['left']['style'] = PHPExcel_Style_Border::BORDER_THIN;
														break;
											case 'R' :	$formatArray['borders']['right']['style'] = PHPExcel_Style_Border::BORDER_THIN;
														break;
										}
									}
									break;
					}
				}
				$this->_formats['P'.$this->_format++] = $formatArray;
			//	Read cell value data
			} elseif ($dataType == 'C') {
				$hasCalculatedValue = false;
				$cellData = $cellDataFormula = '';
				foreach($rowData as $rowDatum) {
					switch($rowDatum{0}) {
						case 'C' :
						case 'X' :	$column = substr($rowDatum,1);
									break;
						case 'R' :
						case 'Y' :	$row = substr($rowDatum,1);
									break;
						case 'K' :	$cellData = substr($rowDatum,1);
									break;
						case 'E' :	$cellDataFormula = '='.substr($rowDatum,1);
									//	Convert R1C1 style references to A1 style references (but only when not quoted)
									$temp = explode('"',$cellDataFormula);
									$key = false;
									foreach($temp as &$value) {
										//	Only count/replace in alternate array entries
										if ($key = !$key) {
											preg_match_all('/(R(\[?-?\d*\]?))(C(\[?-?\d*\]?))/',$value, $cellReferences,PREG_SET_ORDER+PREG_OFFSET_CAPTURE);
											//	Reverse the matches array, otherwise all our offsets will become incorrect if we modify our way
											//		through the formula from left to right. Reversing means that we work right to left.through
											//		the formula
											$cellReferences = array_reverse($cellReferences);
											//	Loop through each R1C1 style reference in turn, converting it to its A1 style equivalent,
											//		then modify the formula to use that new reference
											foreach($cellReferences as $cellReference) {
												$rowReference = $cellReference[2][0];
												//	Empty R reference is the current row
												if ($rowReference == '') $rowReference = $row;
												//	Bracketed R references are relative to the current row
												if ($rowReference{0} == '[') $rowReference = $row + trim($rowReference,'[]');
												$columnReference = $cellReference[4][0];
												//	Empty C reference is the current column
												if ($columnReference == '') $columnReference = $column;
												//	Bracketed C references are relative to the current column
												if ($columnReference{0} == '[') $columnReference = $column + trim($columnReference,'[]');
												$A1CellReference = PHPExcel_Cell::stringFromColumnIndex($columnReference-1).$rowReference;

												$value = substr_replace($value,$A1CellReference,$cellReference[0][1],strlen($cellReference[0][0]));
											}
										}
									}
									unset($value);
									//	Then rebuild the formula string
									$cellDataFormula = implode('"',$temp);
									$hasCalculatedValue = true;
									break;
					}
				}
				$columnLetter = PHPExcel_Cell::stringFromColumnIndex($column-1);
				$cellData = PHPExcel_Calculation::_unwrapResult($cellData);

				// Set cell value
				$objPHPExcel->getActiveSheet()->getCell($columnLetter.$row)->setValue(($hasCalculatedValue) ? $cellDataFormula : $cellData);
				if ($hasCalculatedValue) {
					$cellData = PHPExcel_Calculation::_unwrapResult($cellData);
					$objPHPExcel->getActiveSheet()->getCell($columnLetter.$row)->setCalculatedValue($cellData);
				}
			//	Read cell formatting
			} elseif ($dataType == 'F') {
				$formatStyle = $columnWidth = $styleSettings = '';
				$styleData = array();
				foreach($rowData as $rowDatum) {
					switch($rowDatum{0}) {
						case 'C' :
						case 'X' :	$column = substr($rowDatum,1);
									break;
						case 'R' :
						case 'Y' :	$row = substr($rowDatum,1);
									break;
						case 'P' :	$formatStyle = $rowDatum;
									break;
						case 'W' :	list($startCol,$endCol,$columnWidth) = explode(' ',substr($rowDatum,1));
									break;
						case 'S' :	$styleSettings = substr($rowDatum,1);
									for ($i=0;$i<strlen($styleSettings);++$i) {
										switch ($styleSettings{$i}) {
											case 'I' :	$styleData['font']['italic'] = true;
														break;
											case 'D' :	$styleData['font']['bold'] = true;
														break;
											case 'T' :	$styleData['borders']['top']['style'] = PHPExcel_Style_Border::BORDER_THIN;
														break;
											case 'B' :	$styleData['borders']['bottom']['style'] = PHPExcel_Style_Border::BORDER_THIN;
														break;
											case 'L' :	$styleData['borders']['left']['style'] = PHPExcel_Style_Border::BORDER_THIN;
														break;
											case 'R' :	$styleData['borders']['right']['style'] = PHPExcel_Style_Border::BORDER_THIN;
														break;
										}
									}
									break;
					}
				}
				if (($formatStyle > '') && ($column > '') && ($row > '')) {
					$columnLetter = PHPExcel_Cell::stringFromColumnIndex($column-1);
					if (isset($this->_formats[$formatStyle])) {
						$objPHPExcel->getActiveSheet()->getStyle($columnLetter.$row)->applyFromArray($this->_formats[$formatStyle]);
					}
				}
				if ((!empty($styleData)) && ($column > '') && ($row > '')) {
					$columnLetter = PHPExcel_Cell::stringFromColumnIndex($column-1);
					$objPHPExcel->getActiveSheet()->getStyle($columnLetter.$row)->applyFromArray($styleData);
				}
				if ($columnWidth > '') {
					if ($startCol == $endCol) {
						$startCol = PHPExcel_Cell::stringFromColumnIndex($startCol-1);
						$objPHPExcel->getActiveSheet()->getColumnDimension($startCol)->setWidth($columnWidth);
					} else {
						$startCol = PHPExcel_Cell::stringFromColumnIndex($startCol-1);
						$endCol = PHPExcel_Cell::stringFromColumnIndex($endCol-1);
						$objPHPExcel->getActiveSheet()->getColumnDimension($startCol)->setWidth($columnWidth);
						do {
							$objPHPExcel->getActiveSheet()->getColumnDimension(++$startCol)->setWidth($columnWidth);
						} while ($startCol != $endCol);
					}
				}
			} else {
				foreach($rowData as $rowDatum) {
					switch($rowDatum{0}) {
						case 'C' :
						case 'X' :	$column = substr($rowDatum,1);
									break;
						case 'R' :
						case 'Y' :	$row = substr($rowDatum,1);
									break;
					}
				}
			}
		}

		// Close file
		fclose($fileHandle);

		// Return
		return $objPHPExcel;
	}

	/**
	 * Get sheet index
	 *
	 * @return int
	 */
	public function getSheetIndex() {
		return $this->_sheetIndex;
	}

	/**
	 * Set sheet index
	 *
	 * @param	int		$pValue		Sheet index
	 * @return PHPExcel_Reader_SYLK
	 */
	public function setSheetIndex($pValue = 0) {
		$this->_sheetIndex = $pValue;
		return $this;
	}

}