source: pro-violet-viettel/sourcecode/application/libraries/PHPExcel/Reader/CSV.php @ 883

<?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    1.8.0, 2014-03-02
 */


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

/**
 * PHPExcel_Reader_CSV
 *
 * @category   PHPExcel
 * @package    PHPExcel_Reader
 * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_Reader_CSV extends PHPExcel_Reader_Abstract implements PHPExcel_Reader_IReader
{
        /**
         * Input encoding
         *
         * @access      private
         * @var string
         */
        private $_inputEncoding = 'UTF-8';

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

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

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

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

        /**
         * Load rows contiguously
         *
         * @access      private
         * @var int
         */
        private $_contiguous    = false;

        /**
         * Row counter for loading rows contiguously
         *
         * @var int
         */
        private $_contiguousRow = -1;


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

        /**
         * Validate that the current file is a CSV file
         *
         * @return boolean
         */
        protected function _isValidFormat()
        {
                return TRUE;
        }

        /**
         * Set input encoding
         *
         * @param string $pValue Input encoding
         */
        public function setInputEncoding($pValue = 'UTF-8')
        {
                $this->_inputEncoding = $pValue;
                return $this;
        }

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

        /**
         * Move filepointer past any BOM marker
         *
         */
        protected function _skipBOM()
        {
                rewind($this->_fileHandle);

                switch ($this->_inputEncoding) {
                        case 'UTF-8':
                                fgets($this->_fileHandle, 4) == "\xEF\xBB\xBF" ?
                                        fseek($this->_fileHandle, 3) : fseek($this->_fileHandle, 0);
                                break;
                        case 'UTF-16LE':
                                fgets($this->_fileHandle, 3) == "\xFF\xFE" ?
                                        fseek($this->_fileHandle, 2) : fseek($this->_fileHandle, 0);
                                break;
                        case 'UTF-16BE':
                                fgets($this->_fileHandle, 3) == "\xFE\xFF" ?
                                        fseek($this->_fileHandle, 2) : fseek($this->_fileHandle, 0);
                                break;
                        case 'UTF-32LE':
                                fgets($this->_fileHandle, 5) == "\xFF\xFE\x00\x00" ?
                                        fseek($this->_fileHandle, 4) : fseek($this->_fileHandle, 0);
                                break;
                        case 'UTF-32BE':
                                fgets($this->_fileHandle, 5) == "\x00\x00\xFE\xFF" ?
                                        fseek($this->_fileHandle, 4) : fseek($this->_fileHandle, 0);
                                break;
                        default:
                                break;
                }
        }

        /**
         * 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;

                // Skip BOM, if any
                $this->_skipBOM();

                $escapeEnclosures = array( "\\" . $this->_enclosure, $this->_enclosure . $this->_enclosure );

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

                // Loop through each line of the file in turn
                while (($rowData = fgetcsv($fileHandle, 0, $this->_delimiter, $this->_enclosure)) !== FALSE) {
                        $worksheetInfo[0]['totalRows']++;
                        $worksheetInfo[0]['lastColumnIndex'] = max($worksheetInfo[0]['lastColumnIndex'], count($rowData) - 1);
                }

                $worksheetInfo[0]['lastColumnLetter'] = PHPExcel_Cell::stringFromColumnIndex($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)
        {
                $lineEnding = ini_get('auto_detect_line_endings');
                ini_set('auto_detect_line_endings', true);

                // 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;

                // Skip BOM, if any
                $this->_skipBOM();

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

                $escapeEnclosures = array( "\\" . $this->_enclosure,
                                                                   $this->_enclosure . $this->_enclosure
                                                                 );

                // Set our starting row based on whether we're in contiguous mode or not
                $currentRow = 1;
                if ($this->_contiguous) {
                        $currentRow = ($this->_contiguousRow == -1) ? $sheet->getHighestRow(): $this->_contiguousRow;
                }

                // Loop through each line of the file in turn
                while (($rowData = fgetcsv($fileHandle, 0, $this->_delimiter, $this->_enclosure)) !== FALSE) {
                        $columnLetter = 'A';
                        foreach($rowData as $rowDatum) {
                                if ($rowDatum != '' && $this->_readFilter->readCell($columnLetter, $currentRow)) {
                                        // Unescape enclosures
                                        $rowDatum = str_replace($escapeEnclosures, $this->_enclosure, $rowDatum);

                                        // Convert encoding if necessary
                                        if ($this->_inputEncoding !== 'UTF-8') {
                                                $rowDatum = PHPExcel_Shared_String::ConvertEncoding($rowDatum, 'UTF-8', $this->_inputEncoding);
                                        }

                                        // Set cell value
                                        $sheet->getCell($columnLetter . $currentRow)->setValue($rowDatum);
                                }
                                ++$columnLetter;
                        }
                        ++$currentRow;
                }

                // Close file
                fclose($fileHandle);

                if ($this->_contiguous) {
                        $this->_contiguousRow = $currentRow;
                }

                ini_set('auto_detect_line_endings', $lineEnding);

                // Return
                return $objPHPExcel;
        }

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

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

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

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

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

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

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

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

        /**
         * Set Contiguous
         *
         * @param boolean $contiguous
         */
        public function setContiguous($contiguous = FALSE)
        {
                $this->_contiguous = (bool) $contiguous;
                if (!$contiguous) {
                        $this->_contiguousRow = -1;
                }

                return $this;
        }

        /**
         * Get Contiguous
         *
         * @return boolean
         */
        public function getContiguous() {
                return $this->_contiguous;
        }

}