<?php

/**
 * PHPExcel_Writer_CSV
 *
 * 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_Writer_CSV
 * @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_Writer_CSV extends PHPExcel_Writer_Abstract implements PHPExcel_Writer_IWriter
{
    /**
     * PHPExcel object
     *
     * @var PHPExcel
     */
    private $phpExcel;

    /**
     * Delimiter
     *
     * @var string
     */
    private $delimiter    = ',';

    /**
     * Enclosure
     *
     * @var string
     */
    private $enclosure    = '"';

    /**
     * Line ending
     *
     * @var string
     */
    private $lineEnding    = PHP_EOL;

    /**
     * Sheet index to write
     *
     * @var int
     */
    private $sheetIndex    = 0;

    /**
     * Whether to write a BOM (for UTF8).
     *
     * @var boolean
     */
    private $useBOM = false;

    /**
     * Whether to write a fully Excel compatible CSV file.
     *
     * @var boolean
     */
    private $excelCompatibility = false;

    /**
     * Create a new PHPExcel_Writer_CSV
     *
     * @param    PHPExcel    $phpExcel    PHPExcel object
     */
    public function __construct(PHPExcel $phpExcel)
    {
        $this->phpExcel    = $phpExcel;
    }

    /**
     * Save PHPExcel to file
     *
     * @param    string        $pFilename
     * @throws    PHPExcel_Writer_Exception
     */
    public function save($pFilename = null)
    {
        // Fetch sheet
        $sheet = $this->phpExcel->getSheet($this->sheetIndex);

        $saveDebugLog = PHPExcel_Calculation::getInstance($this->phpExcel)->getDebugLog()->getWriteDebugLog();
        PHPExcel_Calculation::getInstance($this->phpExcel)->getDebugLog()->setWriteDebugLog(false);
        $saveArrayReturnType = PHPExcel_Calculation::getArrayReturnType();
        PHPExcel_Calculation::setArrayReturnType(PHPExcel_Calculation::RETURN_ARRAY_AS_VALUE);

        // Open file
        $fileHandle = fopen($pFilename, 'wb+');
        if ($fileHandle === false) {
            throw new PHPExcel_Writer_Exception("Could not open file $pFilename for writing.");
        }

        if ($this->excelCompatibility) {
            fwrite($fileHandle, "\xEF\xBB\xBF");    //    Enforce UTF-8 BOM Header
            $this->setEnclosure('"');                //    Set enclosure to "
            $this->setDelimiter(";");                //    Set delimiter to a semi-colon
            $this->setLineEnding("\r\n");
            fwrite($fileHandle, 'sep=' . $this->getDelimiter() . $this->lineEnding);
        } elseif ($this->useBOM) {
            // Write the UTF-8 BOM code if required
            fwrite($fileHandle, "\xEF\xBB\xBF");
        }

        //    Identify the range that we need to extract from the worksheet
        $maxCol = $sheet->getHighestDataColumn();
        $maxRow = $sheet->getHighestDataRow();

        // Write rows to file
        for ($row = 1; $row <= $maxRow; ++$row) {
            // Convert the row to an array...
            $cellsArray = $sheet->rangeToArray('A'.$row.':'.$maxCol.$row, '', $this->preCalculateFormulas);
            // ... and write to the file
            $this->writeLine($fileHandle, $cellsArray[0]);
        }

        // Close file
        fclose($fileHandle);

        PHPExcel_Calculation::setArrayReturnType($saveArrayReturnType);
        PHPExcel_Calculation::getInstance($this->phpExcel)->getDebugLog()->setWriteDebugLog($saveDebugLog);
    }

    /**
     * Get delimiter
     *
     * @return string
     */
    public function getDelimiter()
    {
        return $this->delimiter;
    }

    /**
     * Set delimiter
     *
     * @param    string    $pValue        Delimiter, defaults to ,
     * @return PHPExcel_Writer_CSV
     */
    public function setDelimiter($pValue = ',')
    {
        $this->delimiter = $pValue;
        return $this;
    }

    /**
     * Get enclosure
     *
     * @return string
     */
    public function getEnclosure()
    {
        return $this->enclosure;
    }

    /**
     * Set enclosure
     *
     * @param    string    $pValue        Enclosure, defaults to "
     * @return PHPExcel_Writer_CSV
     */
    public function setEnclosure($pValue = '"')
    {
        if ($pValue == '') {
            $pValue = null;
        }
        $this->enclosure = $pValue;
        return $this;
    }

    /**
     * Get line ending
     *
     * @return string
     */
    public function getLineEnding()
    {
        return $this->lineEnding;
    }

    /**
     * Set line ending
     *
     * @param    string    $pValue        Line ending, defaults to OS line ending (PHP_EOL)
     * @return PHPExcel_Writer_CSV
     */
    public function setLineEnding($pValue = PHP_EOL)
    {
        $this->lineEnding = $pValue;
        return $this;
    }

    /**
     * Get whether BOM should be used
     *
     * @return boolean
     */
    public function getUseBOM()
    {
        return $this->useBOM;
    }

    /**
     * Set whether BOM should be used
     *
     * @param    boolean    $pValue        Use UTF-8 byte-order mark? Defaults to false
     * @return PHPExcel_Writer_CSV
     */
    public function setUseBOM($pValue = false)
    {
        $this->useBOM = $pValue;
        return $this;
    }

    /**
     * Get whether the file should be saved with full Excel Compatibility
     *
     * @return boolean
     */
    public function getExcelCompatibility()
    {
        return $this->excelCompatibility;
    }

    /**
     * Set whether the file should be saved with full Excel Compatibility
     *
     * @param    boolean    $pValue        Set the file to be written as a fully Excel compatible csv file
     *                                Note that this overrides other settings such as useBOM, enclosure and delimiter
     * @return PHPExcel_Writer_CSV
     */
    public function setExcelCompatibility($pValue = false)
    {
        $this->excelCompatibility = $pValue;
        return $this;
    }

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

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

    /**
     * Write line to CSV file
     *
     * @param    mixed    $pFileHandle    PHP filehandle
     * @param    array    $pValues        Array containing values in a row
     * @throws    PHPExcel_Writer_Exception
     */
    private function writeLine($pFileHandle = null, $pValues = null)
    {
        if (is_array($pValues)) {
            // No leading delimiter
            $writeDelimiter = false;

            // Build the line
            $line = '';

            foreach ($pValues as $element) {
                // Escape enclosures
                $element = str_replace($this->enclosure, $this->enclosure . $this->enclosure, $element);

                // Add delimiter
                if ($writeDelimiter) {
                    $line .= $this->delimiter;
                } else {
                    $writeDelimiter = true;
                }

                // Add enclosed string
                $line .= $this->enclosure . $element . $this->enclosure;
            }

            // Add line ending
            $line .= $this->lineEnding;

            // Write to file
            fwrite($pFileHandle, $line);
        } else {
            throw new PHPExcel_Writer_Exception("Invalid data row passed to CSV writer.");
        }
    }
}
