Feature: Initial version of HTML Reader
git-svn-id: https://phpexcel.svn.codeplex.com/svn/trunk@91447 2327b42d-5241-43d6-9e2a-de5ac946f064
This commit is contained in:
Mark Baker
parent
ec9256a12e
commit
3783c7e099
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@ -0,0 +1,495 @@
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<?php
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/**
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* PHPExcel
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*
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* Copyright (c) 2006 - 2011 PHPExcel
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* @category PHPExcel
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* @package PHPExcel_Reader
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* @copyright Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
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* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
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* @version ##VERSION##, ##DATE##
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*/
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/** PHPExcel root directory */
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if (!defined('PHPEXCEL_ROOT')) {
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/**
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* @ignore
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*/
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define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
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require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
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}
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/**
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* PHPExcel_Reader_HTML
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*
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* @category PHPExcel
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* @package PHPExcel_Reader
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* @copyright Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
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*/
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class PHPExcel_Reader_HTML implements PHPExcel_Reader_IReader
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{
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/**
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* Input encoding
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*
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* @var string
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*/
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private $_inputEncoding = 'ANSI';
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/**
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* Sheet index to read
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*
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* @var int
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*/
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private $_sheetIndex = 0;
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/**
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* Formats
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*
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* @var array
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*/
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private $_formats = array( 'h1' => array( 'font' => array( 'bold' => true,
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'size' => 24,
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),
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), // Bold, 24pt
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'h2' => array( 'font' => array( 'bold' => true,
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'size' => 18,
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),
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), // Bold, 18pt
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'h3' => array( 'font' => array( 'bold' => true,
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'size' => 13.5,
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),
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), // Bold, 13.5pt
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'h4' => array( 'font' => array( 'bold' => true,
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'size' => 12,
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),
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), // Bold, 12pt
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'h5' => array( 'font' => array( 'bold' => true,
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'size' => 10,
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),
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), // Bold, 10pt
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'h6' => array( 'font' => array( 'bold' => true,
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'size' => 7.5,
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),
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), // Bold, 7.5pt
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'a' => array( 'font' => array( 'underline' => true,
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'color' => array( 'argb' => PHPExcel_Style_Color::COLOR_BLUE,
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),
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),
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), // Blue underlined
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'hr' => array( 'borders' => array( 'bottom' => array( 'style' => PHPExcel_Style_Border::BORDER_THIN,
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'color' => array( PHPExcel_Style_Color::COLOR_BLACK,
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),
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),
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),
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), // Bottom border
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);
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/**
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* PHPExcel_Reader_IReadFilter instance
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*
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* @var PHPExcel_Reader_IReadFilter
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*/
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private $_readFilter = null;
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/**
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* Create a new PHPExcel_Reader_HTML
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*/
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public function __construct() {
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$this->_readFilter = new PHPExcel_Reader_DefaultReadFilter();
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}
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/**
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* Can the current PHPExcel_Reader_IReader read the file?
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*
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* @param string $pFileName
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* @return boolean
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* @throws Exception
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*/
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public function canRead($pFilename)
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{
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// Check if file exists
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if (!file_exists($pFilename)) {
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throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
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}
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// Read sample data (first 2 KB will do)
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$fh = fopen($pFilename, 'r');
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$data = fread($fh, 2048);
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fclose($fh);
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return true;
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}
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/**
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* Loads PHPExcel from file
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*
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* @param string $pFilename
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* @return PHPExcel
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* @throws Exception
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*/
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public function load($pFilename)
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{
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// Create new PHPExcel
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$objPHPExcel = new PHPExcel();
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// Load into this instance
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return $this->loadIntoExisting($pFilename, $objPHPExcel);
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}
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/**
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* Read filter
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*
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* @return PHPExcel_Reader_IReadFilter
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*/
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public function getReadFilter() {
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return $this->_readFilter;
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}
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/**
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* Set read filter
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*
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* @param PHPExcel_Reader_IReadFilter $pValue
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*/
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public function setReadFilter(PHPExcel_Reader_IReadFilter $pValue) {
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$this->_readFilter = $pValue;
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return $this;
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}
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/**
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* Set input encoding
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*
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* @param string $pValue Input encoding
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*/
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public function setInputEncoding($pValue = 'ANSI')
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{
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$this->_inputEncoding = $pValue;
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return $this;
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}
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/**
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* Get input encoding
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*
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* @return string
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*/
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public function getInputEncoding()
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{
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return $this->_inputEncoding;
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}
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// Data Array used for testing only, should write to PHPExcel object on completion of tests
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private $_dataArray = array();
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private $_tableLevel = 0;
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private $_nestedColumn = array('A');
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private function _setTableStartColumn($column) {
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if ($this->_tableLevel == 0)
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$column = 'A';
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++$this->_tableLevel;
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$this->_nestedColumn[$this->_tableLevel] = $column;
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return $this->_nestedColumn[$this->_tableLevel];
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}
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private function _getTableStartColumn() {
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return $this->_nestedColumn[$this->_tableLevel];
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}
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private function _releaseTableStartColumn() {
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--$this->_tableLevel;
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return array_pop($this->_nestedColumn);
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}
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private function _flushCell($sheet,$column,$row,&$cellContent) {
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if (is_string($cellContent)) {
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// Simple String content
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if (trim($cellContent) > '') {
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// Only actually write it if there's content in the string
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echo 'FLUSH CELL: ' , $column , $row , ' => ' , $cellContent , '<br />';
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// Write to worksheet to be done here...
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// ... we return the cell so we can mess about with styles more easily
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$cell = $sheet->setCellValue($column.$row,$cellContent,true);
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$this->_dataArray[$row][$column] = $cellContent;
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}
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} else {
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// We have a Rich Text run
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// TODO
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$this->_dataArray[$row][$column] = 'RICH TEXT: ' . $cellContent;
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}
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$cellContent = (string) '';
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}
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private function _processDomElement(DOMNode $element, $sheet, &$row, &$column, &$cellContent){
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foreach($element->childNodes as $child){
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if ($child instanceOf DOMText) {
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$domText = preg_replace('/\s+/',' ',trim($child->nodeValue));
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if (is_string($cellContent)) {
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// simply append the text if the cell content is a plain text string
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$cellContent .= $domText;
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} else {
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// but if we have a rich text run instead, we need to append it correctly
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// TODO
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}
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} elseif($child instanceOf DOMElement) {
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echo '<b>DOM ELEMENT: </b>' , strtoupper($child->nodeName) , '<br />';
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$attributeArray = array();
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foreach($child->attributes as $attribute) {
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echo '<b>ATTRIBUTE: </b>' , $attribute->name , ' => ' , $attribute->value , '<br />';
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$attributeArray[$attribute->name] = $attribute->value;
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}
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switch($child->nodeName) {
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case 'meta' :
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foreach($attributeArray as $attributeName => $attributeValue) {
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switch($attributeName) {
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case 'content':
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// TODO
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// Extract character set, so we can convert to UTF-8 if required
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break;
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}
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}
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$this->_processDomElement($child,$sheet,$row,$column,$cellContent);
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break;
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case 'title' :
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$this->_processDomElement($child,$sheet,$row,$column,$cellContent);
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$sheet->setTitle($cellContent);
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$cellContent = '';
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break;
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case 'span' :
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case 'div' :
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case 'font' :
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case 'i' :
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case 'em' :
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case 'strong':
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case 'b' :
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echo 'STYLING, SPAN OR DIV<br />';
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if ($cellContent > '')
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$cellContent .= ' ';
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$this->_processDomElement($child,$sheet,$row,$column,$cellContent);
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if ($cellContent > '')
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$cellContent .= ' ';
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echo 'END OF STYLING, SPAN OR DIV<br />';
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break;
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case 'hr' :
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$this->_flushCell($sheet,$column,$row,$cellContent);
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++$row;
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if (isset($this->_formats[$child->nodeName])) {
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$sheet->getStyle($column.$row)->applyFromArray($this->_formats[$child->nodeName]);
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} else {
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$cellContent = '----------';
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$this->_flushCell($sheet,$column,$row,$cellContent);
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}
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++$row;
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case 'br' :
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if ($this->_tableLevel > 0) {
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// If we're inside a table, replace with a \n
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$cellContent .= "\n";
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} else {
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// Otherwise flush our existing content and move the row cursor on
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$this->_flushCell($sheet,$column,$row,$cellContent);
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++$row;
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}
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echo 'HARD LINE BREAK: ' , '<br />';
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break;
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case 'a' :
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echo 'START OF HYPERLINK: ' , '<br />';
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foreach($attributeArray as $attributeName => $attributeValue) {
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switch($attributeName) {
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case 'href':
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echo 'Link to ' , $attributeValue , '<br />';
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$sheet->getCell($column.$row)->getHyperlink()->setUrl($attributeValue);
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if (isset($this->_formats[$child->nodeName])) {
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$sheet->getStyle($column.$row)->applyFromArray($this->_formats[$child->nodeName]);
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}
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break;
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}
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}
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$cellContent .= ' ';
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$this->_processDomElement($child,$sheet,$row,$column,$cellContent);
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echo 'END OF HYPERLINK:' , '<br />';
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break;
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case 'h1' :
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case 'h2' :
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case 'h3' :
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case 'h4' :
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case 'h5' :
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case 'h6' :
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case 'ol' :
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case 'ul' :
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case 'p' :
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if ($this->_tableLevel > 0) {
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// If we're inside a table, replace with a \n
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$cellContent .= "\n";
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echo 'LIST ENTRY: ' , '<br />';
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$this->_processDomElement($child,$sheet,$row,$column,$cellContent);
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echo 'END OF LIST ENTRY:' , '<br />';
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} else {
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if ($cellContent > '') {
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$this->_flushCell($sheet,$column,$row,$cellContent);
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$row += 2;
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}
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echo 'START OF PARAGRAPH: ' , '<br />';
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$this->_processDomElement($child,$sheet,$row,$column,$cellContent);
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echo 'END OF PARAGRAPH:' , '<br />';
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$this->_flushCell($sheet,$column,$row,$cellContent);
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if (isset($this->_formats[$child->nodeName])) {
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$sheet->getStyle($column.$row)->applyFromArray($this->_formats[$child->nodeName]);
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}
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$row += 2;
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$column = 'A';
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}
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break;
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case 'li' :
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if ($this->_tableLevel > 0) {
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// If we're inside a table, replace with a \n
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$cellContent .= "\n";
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echo 'LIST ENTRY: ' , '<br />';
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$this->_processDomElement($child,$sheet,$row,$column,$cellContent);
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echo 'END OF LIST ENTRY:' , '<br />';
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} else {
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if ($cellContent > '') {
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$this->_flushCell($sheet,$column,$row,$cellContent);
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}
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++$row;
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echo 'LIST ENTRY: ' , '<br />';
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$this->_processDomElement($child,$sheet,$row,$column,$cellContent);
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echo 'END OF LIST ENTRY:' , '<br />';
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$this->_flushCell($sheet,$column,$row,$cellContent);
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$column = 'A';
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}
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break;
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case 'table' :
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$this->_flushCell($sheet,$column,$row,$cellContent);
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$column = $this->_setTableStartColumn($column);
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echo 'START OF TABLE LEVEL ' , $this->_tableLevel , '<br />';
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if ($this->_tableLevel > 1)
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--$row;
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$this->_processDomElement($child,$sheet,$row,$column,$cellContent);
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echo 'END OF TABLE LEVEL ' , $this->_tableLevel , '<br />';
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$column = $this->_releaseTableStartColumn();
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if ($this->_tableLevel > 1) {
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++$column;
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} else {
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++$row;
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}
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break;
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case 'thead' :
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case 'tbody' :
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$this->_processDomElement($child,$sheet,$row,$column,$cellContent);
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break;
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case 'tr' :
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++$row;
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$column = $this->_getTableStartColumn();
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$cellContent = '';
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echo 'START OF TABLE ' , $this->_tableLevel , ' ROW<br />';
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$this->_processDomElement($child,$sheet,$row,$column,$cellContent);
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echo 'END OF TABLE ' , $this->_tableLevel , ' ROW<br />';
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break;
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case 'th' :
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case 'td' :
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echo 'START OF TABLE ' , $this->_tableLevel , ' CELL<br />';
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$this->_processDomElement($child,$sheet,$row,$column,$cellContent);
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echo 'END OF TABLE ' , $this->_tableLevel , ' CELL<br />';
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$this->_flushCell($sheet,$column,$row,$cellContent);
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++$column;
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break;
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case 'body' :
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$row = 1;
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$column = 'A';
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$content = '';
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$this->_tableLevel = 0;
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$this->_processDomElement($child,$sheet,$row,$column,$cellContent);
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break;
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default:
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$this->_processDomElement($child,$sheet,$row,$column,$cellContent);
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}
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}
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}
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}
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/**
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* Loads PHPExcel from file into PHPExcel instance
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*
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* @param string $pFilename
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* @param PHPExcel $objPHPExcel
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* @return PHPExcel
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* @throws Exception
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*/
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public function loadIntoExisting($pFilename, PHPExcel $objPHPExcel)
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{
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// Check if file exists
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if (!file_exists($pFilename)) {
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throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
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}
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// Create new PHPExcel
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while ($objPHPExcel->getSheetCount() <= $this->_sheetIndex) {
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$objPHPExcel->createSheet();
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}
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$objPHPExcel->setActiveSheetIndex( $this->_sheetIndex );
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// Create a new DOM object
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$dom = new domDocument;
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// Load the HTML file into the DOM object
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$loaded = $dom->loadHTMLFile($pFilename);
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if ($loaded === false) {
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throw new Exception('Failed to load ',$pFilename,' as a DOM Document');
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}
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// Discard white space
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$dom->preserveWhiteSpace = false;
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$row = 0;
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$column = 'A';
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$content = '';
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$this->_processDomElement($dom,$objPHPExcel->getActiveSheet(),$row,$column,$content);
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echo '<hr />';
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var_dump($this->_dataArray);
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// Return
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return $objPHPExcel;
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}
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/**
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* Get sheet index
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*
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* @return int
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*/
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public function getSheetIndex() {
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return $this->_sheetIndex;
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}
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/**
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* Set sheet index
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*
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* @param int $pValue Sheet index
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* @return PHPExcel_Reader_HTML
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*/
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public function setSheetIndex($pValue = 0) {
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$this->_sheetIndex = $pValue;
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return $this;
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}
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}
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