diff options
Diffstat (limited to 'admin/survey/excel/PHPExcel/Shared/OLERead.php')
| -rw-r--r-- | admin/survey/excel/PHPExcel/Shared/OLERead.php | 317 |
1 files changed, 0 insertions, 317 deletions
diff --git a/admin/survey/excel/PHPExcel/Shared/OLERead.php b/admin/survey/excel/PHPExcel/Shared/OLERead.php deleted file mode 100644 index 1c2c0ac..0000000 --- a/admin/survey/excel/PHPExcel/Shared/OLERead.php +++ /dev/null @@ -1,317 +0,0 @@ -<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_Shared
- * @copyright Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
- * @version 1.7.8, 2012-10-12
- */
-
-define('IDENTIFIER_OLE', pack('CCCCCCCC', 0xd0, 0xcf, 0x11, 0xe0, 0xa1, 0xb1, 0x1a, 0xe1));
-
-class PHPExcel_Shared_OLERead {
- private $data = '';
-
- // OLE identifier
- const IDENTIFIER_OLE = IDENTIFIER_OLE;
-
- // Size of a sector = 512 bytes
- const BIG_BLOCK_SIZE = 0x200;
-
- // Size of a short sector = 64 bytes
- const SMALL_BLOCK_SIZE = 0x40;
-
- // Size of a directory entry always = 128 bytes
- const PROPERTY_STORAGE_BLOCK_SIZE = 0x80;
-
- // Minimum size of a standard stream = 4096 bytes, streams smaller than this are stored as short streams
- const SMALL_BLOCK_THRESHOLD = 0x1000;
-
- // header offsets
- const NUM_BIG_BLOCK_DEPOT_BLOCKS_POS = 0x2c;
- const ROOT_START_BLOCK_POS = 0x30;
- const SMALL_BLOCK_DEPOT_BLOCK_POS = 0x3c;
- const EXTENSION_BLOCK_POS = 0x44;
- const NUM_EXTENSION_BLOCK_POS = 0x48;
- const BIG_BLOCK_DEPOT_BLOCKS_POS = 0x4c;
-
- // property storage offsets (directory offsets)
- const SIZE_OF_NAME_POS = 0x40;
- const TYPE_POS = 0x42;
- const START_BLOCK_POS = 0x74;
- const SIZE_POS = 0x78;
-
-
-
- public $wrkbook = null;
- public $summaryInformation = null;
- public $documentSummaryInformation = null;
-
-
- /**
- * Read the file
- *
- * @param $sFileName string Filename
- * @throws Exception
- */
- public function read($sFileName)
- {
- // Check if file exists and is readable
- if(!is_readable($sFileName)) {
- throw new Exception("Could not open " . $sFileName . " for reading! File does not exist, or it is not readable.");
- }
-
- // Get the file data
- $this->data = file_get_contents($sFileName);
-
- // Check OLE identifier
- if (substr($this->data, 0, 8) != self::IDENTIFIER_OLE) {
- throw new Exception('The filename ' . $sFileName . ' is not recognised as an OLE file');
- }
-
- // Total number of sectors used for the SAT
- $this->numBigBlockDepotBlocks = self::_GetInt4d($this->data, self::NUM_BIG_BLOCK_DEPOT_BLOCKS_POS);
-
- // SecID of the first sector of the directory stream
- $this->rootStartBlock = self::_GetInt4d($this->data, self::ROOT_START_BLOCK_POS);
-
- // SecID of the first sector of the SSAT (or -2 if not extant)
- $this->sbdStartBlock = self::_GetInt4d($this->data, self::SMALL_BLOCK_DEPOT_BLOCK_POS);
-
- // SecID of the first sector of the MSAT (or -2 if no additional sectors are used)
- $this->extensionBlock = self::_GetInt4d($this->data, self::EXTENSION_BLOCK_POS);
-
- // Total number of sectors used by MSAT
- $this->numExtensionBlocks = self::_GetInt4d($this->data, self::NUM_EXTENSION_BLOCK_POS);
-
- $bigBlockDepotBlocks = array();
- $pos = self::BIG_BLOCK_DEPOT_BLOCKS_POS;
-
- $bbdBlocks = $this->numBigBlockDepotBlocks;
-
- if ($this->numExtensionBlocks != 0) {
- $bbdBlocks = (self::BIG_BLOCK_SIZE - self::BIG_BLOCK_DEPOT_BLOCKS_POS)/4;
- }
-
- for ($i = 0; $i < $bbdBlocks; ++$i) {
- $bigBlockDepotBlocks[$i] = self::_GetInt4d($this->data, $pos);
- $pos += 4;
- }
-
- for ($j = 0; $j < $this->numExtensionBlocks; ++$j) {
- $pos = ($this->extensionBlock + 1) * self::BIG_BLOCK_SIZE;
- $blocksToRead = min($this->numBigBlockDepotBlocks - $bbdBlocks, self::BIG_BLOCK_SIZE / 4 - 1);
-
- for ($i = $bbdBlocks; $i < $bbdBlocks + $blocksToRead; ++$i) {
- $bigBlockDepotBlocks[$i] = self::_GetInt4d($this->data, $pos);
- $pos += 4;
- }
-
- $bbdBlocks += $blocksToRead;
- if ($bbdBlocks < $this->numBigBlockDepotBlocks) {
- $this->extensionBlock = self::_GetInt4d($this->data, $pos);
- }
- }
-
- $pos = $index = 0;
- $this->bigBlockChain = array();
-
- $bbs = self::BIG_BLOCK_SIZE / 4;
- for ($i = 0; $i < $this->numBigBlockDepotBlocks; ++$i) {
- $pos = ($bigBlockDepotBlocks[$i] + 1) * self::BIG_BLOCK_SIZE;
-
- for ($j = 0 ; $j < $bbs; ++$j) {
- $this->bigBlockChain[$index] = self::_GetInt4d($this->data, $pos);
- $pos += 4 ;
- ++$index;
- }
- }
-
- $pos = $index = 0;
- $sbdBlock = $this->sbdStartBlock;
- $this->smallBlockChain = array();
-
- while ($sbdBlock != -2) {
- $pos = ($sbdBlock + 1) * self::BIG_BLOCK_SIZE;
-
- for ($j = 0; $j < $bbs; ++$j) {
- $this->smallBlockChain[$index] = self::_GetInt4d($this->data, $pos);
- $pos += 4;
- ++$index;
- }
-
- $sbdBlock = $this->bigBlockChain[$sbdBlock];
- }
-
- // read the directory stream
- $block = $this->rootStartBlock;
- $this->entry = $this->_readData($block);
-
- $this->_readPropertySets();
- }
-
- /**
- * Extract binary stream data
- *
- * @return string
- */
- public function getStream($stream)
- {
- if ($stream === NULL) {
- return null;
- }
-
- $streamData = '';
-
- if ($this->props[$stream]['size'] < self::SMALL_BLOCK_THRESHOLD) {
- $rootdata = $this->_readData($this->props[$this->rootentry]['startBlock']);
-
- $block = $this->props[$stream]['startBlock'];
-
- while ($block != -2) {
- $pos = $block * self::SMALL_BLOCK_SIZE;
- $streamData .= substr($rootdata, $pos, self::SMALL_BLOCK_SIZE);
-
- $block = $this->smallBlockChain[$block];
- }
-
- return $streamData;
- } else {
- $numBlocks = $this->props[$stream]['size'] / self::BIG_BLOCK_SIZE;
- if ($this->props[$stream]['size'] % self::BIG_BLOCK_SIZE != 0) {
- ++$numBlocks;
- }
-
- if ($numBlocks == 0) return '';
-
- $block = $this->props[$stream]['startBlock'];
-
- while ($block != -2) {
- $pos = ($block + 1) * self::BIG_BLOCK_SIZE;
- $streamData .= substr($this->data, $pos, self::BIG_BLOCK_SIZE);
- $block = $this->bigBlockChain[$block];
- }
-
- return $streamData;
- }
- }
-
- /**
- * Read a standard stream (by joining sectors using information from SAT)
- *
- * @param int $bl Sector ID where the stream starts
- * @return string Data for standard stream
- */
- private function _readData($bl)
- {
- $block = $bl;
- $data = '';
-
- while ($block != -2) {
- $pos = ($block + 1) * self::BIG_BLOCK_SIZE;
- $data .= substr($this->data, $pos, self::BIG_BLOCK_SIZE);
- $block = $this->bigBlockChain[$block];
- }
- return $data;
- }
-
- /**
- * Read entries in the directory stream.
- */
- private function _readPropertySets() {
- $offset = 0;
-
- // loop through entires, each entry is 128 bytes
- $entryLen = strlen($this->entry);
- while ($offset < $entryLen) {
- // entry data (128 bytes)
- $d = substr($this->entry, $offset, self::PROPERTY_STORAGE_BLOCK_SIZE);
-
- // size in bytes of name
- $nameSize = ord($d[self::SIZE_OF_NAME_POS]) | (ord($d[self::SIZE_OF_NAME_POS+1]) << 8);
-
- // type of entry
- $type = ord($d[self::TYPE_POS]);
-
- // sectorID of first sector or short sector, if this entry refers to a stream (the case with workbook)
- // sectorID of first sector of the short-stream container stream, if this entry is root entry
- $startBlock = self::_GetInt4d($d, self::START_BLOCK_POS);
-
- $size = self::_GetInt4d($d, self::SIZE_POS);
-
- $name = str_replace("\x00", "", substr($d,0,$nameSize));
-
- $this->props[] = array (
- 'name' => $name,
- 'type' => $type,
- 'startBlock' => $startBlock,
- 'size' => $size);
-
- // Workbook directory entry (BIFF5 uses Book, BIFF8 uses Workbook)
- if (($name == 'Workbook') || ($name == 'Book') || ($name == 'WORKBOOK') || ($name == 'BOOK')) {
- $this->wrkbook = count($this->props) - 1;
- }
-
- // Root entry
- if ($name == 'Root Entry' || $name == 'ROOT ENTRY' || $name == 'R') {
- $this->rootentry = count($this->props) - 1;
- }
-
- // Summary information
- if ($name == chr(5) . 'SummaryInformation') {
-// echo 'Summary Information<br />';
- $this->summaryInformation = count($this->props) - 1;
- }
-
- // Additional Document Summary information
- if ($name == chr(5) . 'DocumentSummaryInformation') {
-// echo 'Document Summary Information<br />';
- $this->documentSummaryInformation = count($this->props) - 1;
- }
-
- $offset += self::PROPERTY_STORAGE_BLOCK_SIZE;
- }
-
- }
-
- /**
- * Read 4 bytes of data at specified position
- *
- * @param string $data
- * @param int $pos
- * @return int
- */
- private static function _GetInt4d($data, $pos)
- {
- // FIX: represent numbers correctly on 64-bit system
- // http://sourceforge.net/tracker/index.php?func=detail&aid=1487372&group_id=99160&atid=623334
- // Hacked by Andreas Rehm 2006 to ensure correct result of the <<24 block on 32 and 64bit systems
- $_or_24 = ord($data[$pos + 3]);
- if ($_or_24 >= 128) {
- // negative number
- $_ord_24 = -abs((256 - $_or_24) << 24);
- } else {
- $_ord_24 = ($_or_24 & 127) << 24;
- }
- return ord($data[$pos]) | (ord($data[$pos + 1]) << 8) | (ord($data[$pos + 2]) << 16) | $_ord_24;
- }
-
-}
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