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Diffstat (limited to 'admin/survey/excel/PHPExcel/Shared/OLE.php')
| -rw-r--r-- | admin/survey/excel/PHPExcel/Shared/OLE.php | 531 |
1 files changed, 531 insertions, 0 deletions
diff --git a/admin/survey/excel/PHPExcel/Shared/OLE.php b/admin/survey/excel/PHPExcel/Shared/OLE.php new file mode 100644 index 0000000..0f6222b --- /dev/null +++ b/admin/survey/excel/PHPExcel/Shared/OLE.php @@ -0,0 +1,531 @@ +<?php
+/* vim: set expandtab tabstop=4 shiftwidth=4: */
+// +----------------------------------------------------------------------+
+// | PHP Version 4 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1997-2002 The PHP Group |
+// +----------------------------------------------------------------------+
+// | This source file is subject to version 2.02 of the PHP license, |
+// | that is bundled with this package in the file LICENSE, and is |
+// | available at through the world-wide-web at |
+// | http://www.php.net/license/2_02.txt. |
+// | If you did not receive a copy of the PHP license and are unable to |
+// | obtain it through the world-wide-web, please send a note to |
+// | license@php.net so we can mail you a copy immediately. |
+// +----------------------------------------------------------------------+
+// | Author: Xavier Noguer <xnoguer@php.net> |
+// | Based on OLE::Storage_Lite by Kawai, Takanori |
+// +----------------------------------------------------------------------+
+//
+// $Id: OLE.php,v 1.13 2007/03/07 14:38:25 schmidt Exp $
+
+
+/**
+* Array for storing OLE instances that are accessed from
+* OLE_ChainedBlockStream::stream_open().
+* @var array
+*/
+$GLOBALS['_OLE_INSTANCES'] = array();
+
+/**
+* OLE package base class.
+*
+* @author Xavier Noguer <xnoguer@php.net>
+* @author Christian Schmidt <schmidt@php.net>
+* @category PHPExcel
+* @package PHPExcel_Shared_OLE
+*/
+class PHPExcel_Shared_OLE
+{
+ const OLE_PPS_TYPE_ROOT = 5;
+ const OLE_PPS_TYPE_DIR = 1;
+ const OLE_PPS_TYPE_FILE = 2;
+ const OLE_DATA_SIZE_SMALL = 0x1000;
+ const OLE_LONG_INT_SIZE = 4;
+ const OLE_PPS_SIZE = 0x80;
+
+ /**
+ * The file handle for reading an OLE container
+ * @var resource
+ */
+ public $_file_handle;
+
+ /**
+ * Array of PPS's found on the OLE container
+ * @var array
+ */
+ public $_list = array();
+
+ /**
+ * Root directory of OLE container
+ * @var OLE_PPS_Root
+ */
+ public $root;
+
+ /**
+ * Big Block Allocation Table
+ * @var array (blockId => nextBlockId)
+ */
+ public $bbat;
+
+ /**
+ * Short Block Allocation Table
+ * @var array (blockId => nextBlockId)
+ */
+ public $sbat;
+
+ /**
+ * Size of big blocks. This is usually 512.
+ * @var int number of octets per block.
+ */
+ public $bigBlockSize;
+
+ /**
+ * Size of small blocks. This is usually 64.
+ * @var int number of octets per block
+ */
+ public $smallBlockSize;
+
+ /**
+ * Reads an OLE container from the contents of the file given.
+ *
+ * @acces public
+ * @param string $file
+ * @return mixed true on success, PEAR_Error on failure
+ */
+ public function read($file)
+ {
+ $fh = fopen($file, "r");
+ if (!$fh) {
+ throw new Exception("Can't open file $file");
+ }
+ $this->_file_handle = $fh;
+
+ $signature = fread($fh, 8);
+ if ("\xD0\xCF\x11\xE0\xA1\xB1\x1A\xE1" != $signature) {
+ throw new Exception("File doesn't seem to be an OLE container.");
+ }
+ fseek($fh, 28);
+ if (fread($fh, 2) != "\xFE\xFF") {
+ // This shouldn't be a problem in practice
+ throw new Exception("Only Little-Endian encoding is supported.");
+ }
+ // Size of blocks and short blocks in bytes
+ $this->bigBlockSize = pow(2, self::_readInt2($fh));
+ $this->smallBlockSize = pow(2, self::_readInt2($fh));
+
+ // Skip UID, revision number and version number
+ fseek($fh, 44);
+ // Number of blocks in Big Block Allocation Table
+ $bbatBlockCount = self::_readInt4($fh);
+
+ // Root chain 1st block
+ $directoryFirstBlockId = self::_readInt4($fh);
+
+ // Skip unused bytes
+ fseek($fh, 56);
+ // Streams shorter than this are stored using small blocks
+ $this->bigBlockThreshold = self::_readInt4($fh);
+ // Block id of first sector in Short Block Allocation Table
+ $sbatFirstBlockId = self::_readInt4($fh);
+ // Number of blocks in Short Block Allocation Table
+ $sbbatBlockCount = self::_readInt4($fh);
+ // Block id of first sector in Master Block Allocation Table
+ $mbatFirstBlockId = self::_readInt4($fh);
+ // Number of blocks in Master Block Allocation Table
+ $mbbatBlockCount = self::_readInt4($fh);
+ $this->bbat = array();
+
+ // Remaining 4 * 109 bytes of current block is beginning of Master
+ // Block Allocation Table
+ $mbatBlocks = array();
+ for ($i = 0; $i < 109; ++$i) {
+ $mbatBlocks[] = self::_readInt4($fh);
+ }
+
+ // Read rest of Master Block Allocation Table (if any is left)
+ $pos = $this->_getBlockOffset($mbatFirstBlockId);
+ for ($i = 0; $i < $mbbatBlockCount; ++$i) {
+ fseek($fh, $pos);
+ for ($j = 0; $j < $this->bigBlockSize / 4 - 1; ++$j) {
+ $mbatBlocks[] = self::_readInt4($fh);
+ }
+ // Last block id in each block points to next block
+ $pos = $this->_getBlockOffset(self::_readInt4($fh));
+ }
+
+ // Read Big Block Allocation Table according to chain specified by
+ // $mbatBlocks
+ for ($i = 0; $i < $bbatBlockCount; ++$i) {
+ $pos = $this->_getBlockOffset($mbatBlocks[$i]);
+ fseek($fh, $pos);
+ for ($j = 0 ; $j < $this->bigBlockSize / 4; ++$j) {
+ $this->bbat[] = self::_readInt4($fh);
+ }
+ }
+
+ // Read short block allocation table (SBAT)
+ $this->sbat = array();
+ $shortBlockCount = $sbbatBlockCount * $this->bigBlockSize / 4;
+ $sbatFh = $this->getStream($sbatFirstBlockId);
+ for ($blockId = 0; $blockId < $shortBlockCount; ++$blockId) {
+ $this->sbat[$blockId] = self::_readInt4($sbatFh);
+ }
+ fclose($sbatFh);
+
+ $this->_readPpsWks($directoryFirstBlockId);
+
+ return true;
+ }
+
+ /**
+ * @param int block id
+ * @param int byte offset from beginning of file
+ * @access public
+ */
+ public function _getBlockOffset($blockId)
+ {
+ return 512 + $blockId * $this->bigBlockSize;
+ }
+
+ /**
+ * Returns a stream for use with fread() etc. External callers should
+ * use PHPExcel_Shared_OLE_PPS_File::getStream().
+ * @param int|PPS block id or PPS
+ * @return resource read-only stream
+ */
+ public function getStream($blockIdOrPps)
+ {
+ static $isRegistered = false;
+ if (!$isRegistered) {
+ stream_wrapper_register('ole-chainedblockstream',
+ 'PHPExcel_Shared_OLE_ChainedBlockStream');
+ $isRegistered = true;
+ }
+
+ // Store current instance in global array, so that it can be accessed
+ // in OLE_ChainedBlockStream::stream_open().
+ // Object is removed from self::$instances in OLE_Stream::close().
+ $GLOBALS['_OLE_INSTANCES'][] = $this;
+ $instanceId = end(array_keys($GLOBALS['_OLE_INSTANCES']));
+
+ $path = 'ole-chainedblockstream://oleInstanceId=' . $instanceId;
+ if ($blockIdOrPps instanceof PHPExcel_Shared_OLE_PPS) {
+ $path .= '&blockId=' . $blockIdOrPps->_StartBlock;
+ $path .= '&size=' . $blockIdOrPps->Size;
+ } else {
+ $path .= '&blockId=' . $blockIdOrPps;
+ }
+ return fopen($path, 'r');
+ }
+
+ /**
+ * Reads a signed char.
+ * @param resource file handle
+ * @return int
+ * @access public
+ */
+ private static function _readInt1($fh)
+ {
+ list(, $tmp) = unpack("c", fread($fh, 1));
+ return $tmp;
+ }
+
+ /**
+ * Reads an unsigned short (2 octets).
+ * @param resource file handle
+ * @return int
+ * @access public
+ */
+ private static function _readInt2($fh)
+ {
+ list(, $tmp) = unpack("v", fread($fh, 2));
+ return $tmp;
+ }
+
+ /**
+ * Reads an unsigned long (4 octets).
+ * @param resource file handle
+ * @return int
+ * @access public
+ */
+ private static function _readInt4($fh)
+ {
+ list(, $tmp) = unpack("V", fread($fh, 4));
+ return $tmp;
+ }
+
+ /**
+ * Gets information about all PPS's on the OLE container from the PPS WK's
+ * creates an OLE_PPS object for each one.
+ *
+ * @access public
+ * @param integer the block id of the first block
+ * @return mixed true on success, PEAR_Error on failure
+ */
+ public function _readPpsWks($blockId)
+ {
+ $fh = $this->getStream($blockId);
+ for ($pos = 0; ; $pos += 128) {
+ fseek($fh, $pos, SEEK_SET);
+ $nameUtf16 = fread($fh, 64);
+ $nameLength = self::_readInt2($fh);
+ $nameUtf16 = substr($nameUtf16, 0, $nameLength - 2);
+ // Simple conversion from UTF-16LE to ISO-8859-1
+ $name = str_replace("\x00", "", $nameUtf16);
+ $type = self::_readInt1($fh);
+ switch ($type) {
+ case self::OLE_PPS_TYPE_ROOT:
+ $pps = new PHPExcel_Shared_OLE_PPS_Root(null, null, array());
+ $this->root = $pps;
+ break;
+ case self::OLE_PPS_TYPE_DIR:
+ $pps = new PHPExcel_Shared_OLE_PPS(null, null, null, null, null,
+ null, null, null, null, array());
+ break;
+ case self::OLE_PPS_TYPE_FILE:
+ $pps = new PHPExcel_Shared_OLE_PPS_File($name);
+ break;
+ default:
+ continue;
+ }
+ fseek($fh, 1, SEEK_CUR);
+ $pps->Type = $type;
+ $pps->Name = $name;
+ $pps->PrevPps = self::_readInt4($fh);
+ $pps->NextPps = self::_readInt4($fh);
+ $pps->DirPps = self::_readInt4($fh);
+ fseek($fh, 20, SEEK_CUR);
+ $pps->Time1st = self::OLE2LocalDate(fread($fh, 8));
+ $pps->Time2nd = self::OLE2LocalDate(fread($fh, 8));
+ $pps->_StartBlock = self::_readInt4($fh);
+ $pps->Size = self::_readInt4($fh);
+ $pps->No = count($this->_list);
+ $this->_list[] = $pps;
+
+ // check if the PPS tree (starting from root) is complete
+ if (isset($this->root) &&
+ $this->_ppsTreeComplete($this->root->No)) {
+
+ break;
+ }
+ }
+ fclose($fh);
+
+ // Initialize $pps->children on directories
+ foreach ($this->_list as $pps) {
+ if ($pps->Type == self::OLE_PPS_TYPE_DIR || $pps->Type == self::OLE_PPS_TYPE_ROOT) {
+ $nos = array($pps->DirPps);
+ $pps->children = array();
+ while ($nos) {
+ $no = array_pop($nos);
+ if ($no != -1) {
+ $childPps = $this->_list[$no];
+ $nos[] = $childPps->PrevPps;
+ $nos[] = $childPps->NextPps;
+ $pps->children[] = $childPps;
+ }
+ }
+ }
+ }
+
+ return true;
+ }
+
+ /**
+ * It checks whether the PPS tree is complete (all PPS's read)
+ * starting with the given PPS (not necessarily root)
+ *
+ * @access public
+ * @param integer $index The index of the PPS from which we are checking
+ * @return boolean Whether the PPS tree for the given PPS is complete
+ */
+ public function _ppsTreeComplete($index)
+ {
+ return isset($this->_list[$index]) &&
+ ($pps = $this->_list[$index]) &&
+ ($pps->PrevPps == -1 ||
+ $this->_ppsTreeComplete($pps->PrevPps)) &&
+ ($pps->NextPps == -1 ||
+ $this->_ppsTreeComplete($pps->NextPps)) &&
+ ($pps->DirPps == -1 ||
+ $this->_ppsTreeComplete($pps->DirPps));
+ }
+
+ /**
+ * Checks whether a PPS is a File PPS or not.
+ * If there is no PPS for the index given, it will return false.
+ *
+ * @access public
+ * @param integer $index The index for the PPS
+ * @return bool true if it's a File PPS, false otherwise
+ */
+ public function isFile($index)
+ {
+ if (isset($this->_list[$index])) {
+ return ($this->_list[$index]->Type == self::OLE_PPS_TYPE_FILE);
+ }
+ return false;
+ }
+
+ /**
+ * Checks whether a PPS is a Root PPS or not.
+ * If there is no PPS for the index given, it will return false.
+ *
+ * @access public
+ * @param integer $index The index for the PPS.
+ * @return bool true if it's a Root PPS, false otherwise
+ */
+ public function isRoot($index)
+ {
+ if (isset($this->_list[$index])) {
+ return ($this->_list[$index]->Type == self::OLE_PPS_TYPE_ROOT);
+ }
+ return false;
+ }
+
+ /**
+ * Gives the total number of PPS's found in the OLE container.
+ *
+ * @access public
+ * @return integer The total number of PPS's found in the OLE container
+ */
+ public function ppsTotal()
+ {
+ return count($this->_list);
+ }
+
+ /**
+ * Gets data from a PPS
+ * If there is no PPS for the index given, it will return an empty string.
+ *
+ * @access public
+ * @param integer $index The index for the PPS
+ * @param integer $position The position from which to start reading
+ * (relative to the PPS)
+ * @param integer $length The amount of bytes to read (at most)
+ * @return string The binary string containing the data requested
+ * @see OLE_PPS_File::getStream()
+ */
+ public function getData($index, $position, $length)
+ {
+ // if position is not valid return empty string
+ if (!isset($this->_list[$index]) || ($position >= $this->_list[$index]->Size) || ($position < 0)) {
+ return '';
+ }
+ $fh = $this->getStream($this->_list[$index]);
+ $data = stream_get_contents($fh, $length, $position);
+ fclose($fh);
+ return $data;
+ }
+
+ /**
+ * Gets the data length from a PPS
+ * If there is no PPS for the index given, it will return 0.
+ *
+ * @access public
+ * @param integer $index The index for the PPS
+ * @return integer The amount of bytes in data the PPS has
+ */
+ public function getDataLength($index)
+ {
+ if (isset($this->_list[$index])) {
+ return $this->_list[$index]->Size;
+ }
+ return 0;
+ }
+
+ /**
+ * Utility function to transform ASCII text to Unicode
+ *
+ * @access public
+ * @static
+ * @param string $ascii The ASCII string to transform
+ * @return string The string in Unicode
+ */
+ public static function Asc2Ucs($ascii)
+ {
+ $rawname = '';
+ for ($i = 0; $i < strlen($ascii); ++$i) {
+ $rawname .= $ascii{$i} . "\x00";
+ }
+ return $rawname;
+ }
+
+ /**
+ * Utility function
+ * Returns a string for the OLE container with the date given
+ *
+ * @access public
+ * @static
+ * @param integer $date A timestamp
+ * @return string The string for the OLE container
+ */
+ public static function LocalDate2OLE($date = null)
+ {
+ if (!isset($date)) {
+ return "\x00\x00\x00\x00\x00\x00\x00\x00";
+ }
+
+ // factor used for separating numbers into 4 bytes parts
+ $factor = pow(2, 32);
+
+ // days from 1-1-1601 until the beggining of UNIX era
+ $days = 134774;
+ // calculate seconds
+ $big_date = $days*24*3600 + gmmktime(date("H",$date),date("i",$date),date("s",$date),
+ date("m",$date),date("d",$date),date("Y",$date));
+ // multiply just to make MS happy
+ $big_date *= 10000000;
+
+ $high_part = floor($big_date / $factor);
+ // lower 4 bytes
+ $low_part = floor((($big_date / $factor) - $high_part) * $factor);
+
+ // Make HEX string
+ $res = '';
+
+ for ($i = 0; $i < 4; ++$i) {
+ $hex = $low_part % 0x100;
+ $res .= pack('c', $hex);
+ $low_part /= 0x100;
+ }
+ for ($i = 0; $i < 4; ++$i) {
+ $hex = $high_part % 0x100;
+ $res .= pack('c', $hex);
+ $high_part /= 0x100;
+ }
+ return $res;
+ }
+
+ /**
+ * Returns a timestamp from an OLE container's date
+ *
+ * @access public
+ * @static
+ * @param integer $string A binary string with the encoded date
+ * @return string The timestamp corresponding to the string
+ */
+ public static function OLE2LocalDate($string)
+ {
+ if (strlen($string) != 8) {
+ return new PEAR_Error("Expecting 8 byte string");
+ }
+
+ // factor used for separating numbers into 4 bytes parts
+ $factor = pow(2,32);
+ list(, $high_part) = unpack('V', substr($string, 4, 4));
+ list(, $low_part) = unpack('V', substr($string, 0, 4));
+
+ $big_date = ($high_part * $factor) + $low_part;
+ // translate to seconds
+ $big_date /= 10000000;
+
+ // days from 1-1-1601 until the beggining of UNIX era
+ $days = 134774;
+
+ // translate to seconds from beggining of UNIX era
+ $big_date -= $days * 24 * 3600;
+ return floor($big_date);
+ }
+}
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