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- <?php
- /*
- * Module written/ported by Xavier Noguer <xnoguer@rezebra.com>
- *
- * The majority of this is _NOT_ my code. I simply ported it from the
- * PERL Spreadsheet::WriteExcel module.
- *
- * The author of the Spreadsheet::WriteExcel module is John McNamara
- * <jmcnamara@cpan.org>
- *
- * I _DO_ maintain this code, and John McNamara has nothing to do with the
- * porting of this code to PHP. Any questions directly related to this
- * class library should be directed to me.
- *
- * License Information:
- *
- * Spreadsheet_Excel_Writer: A library for generating Excel Spreadsheets
- * Copyright (c) 2002-2003 Xavier Noguer xnoguer@rezebra.com
- *
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
- require_once('PEAR.php');
-
- /**
- * Class for creating OLE streams for Excel Spreadsheets
- *
- * @author Xavier Noguer <xnoguer@rezebra.com>
- * @category FileFormats
- * @package Spreadsheet_Excel_Writer
- */
-
- class Spreadsheet_Excel_Writer_OLEwriter extends PEAR
- {
- /**
- * Filename for the OLE stream
- * @var string
- * @see _initialize()
- */
- var $_OLEfilename;
-
- /**
- * Filehandle for the OLE stream
- * @var resource
- */
- var $_filehandle;
-
- /**
- * Name of the temporal file in case OLE stream goes to stdout
- * @var string
- */
- var $_tmp_filename;
-
- /**
- * Variable for preventing closing two times
- * @var integer
- */
- var $_fileclosed;
-
- /**
- * Size of the data to be written to the OLE stream
- * @var integer
- */
- var $_biffsize;
-
- /**
- * Real data size to be written to the OLE stream
- * @var integer
- */
- var $_booksize;
-
- /**
- * Number of big blocks in the OLE stream
- * @var integer
- */
- var $_big_blocks;
-
- /**
- * Number of list blocks in the OLE stream
- * @var integer
- */
- var $_list_blocks;
-
- /**
- * Number of big blocks in the OLE stream
- * @var integer
- */
- var $_root_start;
-
- /**
- * Constructor for the OLEwriter class
- *
- * @param string $OLEfilename the name of the file for the OLE stream
- */
- function Spreadsheet_Excel_Writer_OLEwriter($OLEfilename)
- {
- $this->_OLEfilename = $OLEfilename;
- $this->_filehandle = "";
- $this->_tmp_filename = "";
- $this->_fileclosed = 0;
- $this->_biff_only = 0;
- //$this->_size_allowed = 0;
- $this->_biffsize = 0;
- $this->_booksize = 0;
- $this->_big_blocks = 0;
- $this->_list_blocks = 0;
- $this->_root_start = 0;
- //$this->_block_count = 4;
- $this->_initialize();
- }
-
- /**
- * Check for a valid filename and store the filehandle.
- * Filehandle "-" writes to STDOUT
- *
- * @access private
- */
- function _initialize()
- {
- $OLEfile = $this->_OLEfilename;
-
- if(($OLEfile == '-') or ($OLEfile == ''))
- {
- $this->_tmp_filename = tempnam("/tmp", "OLEwriter");
- $fh = fopen($this->_tmp_filename,"wb");
- if ($fh == false) {
- $this->raiseError("Can't create temporary file.");
- }
- }
- else
- {
- // Create a new file, open for writing (in binmode)
- $fh = fopen($OLEfile,"wb");
- if ($fh == false) {
- $this->raiseError("Can't open $OLEfile. It may be in use or protected.");
- }
- }
-
- // Store filehandle
- $this->_filehandle = $fh;
- }
-
-
- /**
- * Set the size of the data to be written to the OLE stream.
- * The maximun size comes from this:
- * $big_blocks = (109 depot block x (128 -1 marker word)
- * - (1 x end words)) = 13842
- * $maxsize = $big_blocks * 512 bytes = 7087104
- *
- * @access public
- * @see Spreadsheet_Excel_Writer_Workbook::store_OLE_file()
- * @param integer $biffsize The size of the data to be written to the OLE stream
- * @return integer 1 for success
- */
- function setSize($biffsize)
- {
- $maxsize = 7087104; // TODO: extend max size
-
- if ($biffsize > $maxsize) {
- $this->raiseError("Maximum file size, $maxsize, exceeded.");
- }
-
- $this->_biffsize = $biffsize;
- // Set the min file size to 4k to avoid having to use small blocks
- if ($biffsize > 4096) {
- $this->_booksize = $biffsize;
- }
- else {
- $this->_booksize = 4096;
- }
- //$this->_size_allowed = 1;
- return(1);
- }
-
-
- /**
- * Calculate various sizes needed for the OLE stream
- *
- * @access private
- */
- function _calculateSizes()
- {
- $datasize = $this->_booksize;
- if ($datasize % 512 == 0) {
- $this->_big_blocks = $datasize/512;
- }
- else {
- $this->_big_blocks = floor($datasize/512) + 1;
- }
- // There are 127 list blocks and 1 marker blocks for each big block
- // depot + 1 end of chain block
- $this->_list_blocks = floor(($this->_big_blocks)/127) + 1;
- $this->_root_start = $this->_big_blocks;
- }
-
- /**
- * Write root entry, big block list and close the filehandle.
- * This routine is used to explicitly close the open filehandle without
- * having to wait for DESTROY.
- *
- * @access public
- * @see Spreadsheet_Excel_Writer_Workbook::store_OLE_file()
- */
- function close()
- {
- //return if not $this->{_size_allowed};
- $this->_writePadding();
- $this->_writePropertyStorage();
- $this->_writeBigBlockDepot();
- // Close the filehandle
- fclose($this->_filehandle);
- if(($this->_OLEfilename == '-') or ($this->_OLEfilename == ''))
- {
- $fh = fopen($this->_tmp_filename, "rb");
- if ($fh == false) {
- $this->raiseError("Can't read temporary file.");
- }
- fpassthru($fh);
- @unlink($this->_tmp_filename);
- }
- $this->_fileclosed = 1;
- }
-
-
- /**
- * Write BIFF data to OLE file.
- *
- * @param string $data string of bytes to be written
- */
- function write($data) //por ahora s≤lo a STDOUT
- {
- fwrite($this->_filehandle,$data,strlen($data));
- }
-
-
- /**
- * Write OLE header block.
- */
- function writeHeader()
- {
- $this->_calculateSizes();
- $root_start = $this->_root_start;
- $num_lists = $this->_list_blocks;
- $id = pack("nnnn", 0xD0CF, 0x11E0, 0xA1B1, 0x1AE1);
- $unknown1 = pack("VVVV", 0x00, 0x00, 0x00, 0x00);
- $unknown2 = pack("vv", 0x3E, 0x03);
- $unknown3 = pack("v", -2);
- $unknown4 = pack("v", 0x09);
- $unknown5 = pack("VVV", 0x06, 0x00, 0x00);
- $num_bbd_blocks = pack("V", $num_lists);
- $root_startblock = pack("V", $root_start);
- $unknown6 = pack("VV", 0x00, 0x1000);
- $sbd_startblock = pack("V", -2);
- $unknown7 = pack("VVV", 0x00, -2 ,0x00);
- $unused = pack("V", -1);
-
- fwrite($this->_filehandle,$id);
- fwrite($this->_filehandle,$unknown1);
- fwrite($this->_filehandle,$unknown2);
- fwrite($this->_filehandle,$unknown3);
- fwrite($this->_filehandle,$unknown4);
- fwrite($this->_filehandle,$unknown5);
- fwrite($this->_filehandle,$num_bbd_blocks);
- fwrite($this->_filehandle,$root_startblock);
- fwrite($this->_filehandle,$unknown6);
- fwrite($this->_filehandle,$sbd_startblock);
- fwrite($this->_filehandle,$unknown7);
-
- for($i=1; $i <= $num_lists; $i++)
- {
- $root_start++;
- fwrite($this->_filehandle,pack("V",$root_start));
- }
- for($i = $num_lists; $i <=108; $i++)
- {
- fwrite($this->_filehandle,$unused);
- }
- }
-
-
- /**
- * Write big block depot.
- *
- * @access private
- */
- function _writeBigBlockDepot()
- {
- $num_blocks = $this->_big_blocks;
- $num_lists = $this->_list_blocks;
- $total_blocks = $num_lists *128;
- $used_blocks = $num_blocks + $num_lists +2;
-
- $marker = pack("V", -3);
- $end_of_chain = pack("V", -2);
- $unused = pack("V", -1);
-
- for($i=1; $i < $num_blocks; $i++)
- {
- fwrite($this->_filehandle,pack("V",$i));
- }
- fwrite($this->_filehandle,$end_of_chain);
- fwrite($this->_filehandle,$end_of_chain);
- for($i=0; $i < $num_lists; $i++)
- {
- fwrite($this->_filehandle,$marker);
- }
- for($i=$used_blocks; $i <= $total_blocks; $i++)
- {
- fwrite($this->_filehandle,$unused);
- }
- }
-
- /**
- * Write property storage. TODO: add summary sheets
- *
- * @access private
- */
- function _writePropertyStorage()
- {
- //$rootsize = -2;
- /*************** name type dir start size */
- $this->_writePps("Root Entry", 0x05, 1, -2, 0x00);
- $this->_writePps("Book", 0x02, -1, 0x00, $this->_booksize);
- $this->_writePps('', 0x00, -1, 0x00, 0x0000);
- $this->_writePps('', 0x00, -1, 0x00, 0x0000);
- }
-
- /**
- * Write property sheet in property storage
- *
- * @param string $name name of the property storage.
- * @param integer $type type of the property storage.
- * @param integer $dir dir of the property storage.
- * @param integer $start start of the property storage.
- * @param integer $size size of the property storage.
- * @access private
- */
- function _writePps($name,$type,$dir,$start,$size)
- {
- $length = 0;
- $rawname = '';
-
- if ($name != '')
- {
- $name = $name . "\0";
- for($i=0;$i<strlen($name);$i++)
- {
- // Simulate a Unicode string
- $rawname .= pack("H*",dechex(ord($name{$i}))).pack("C",0);
- }
- $length = strlen($name) * 2;
- }
-
- $zero = pack("C", 0);
- $pps_sizeofname = pack("v", $length); // 0x40
- $pps_type = pack("v", $type); // 0x42
- $pps_prev = pack("V", -1); // 0x44
- $pps_next = pack("V", -1); // 0x48
- $pps_dir = pack("V", $dir); // 0x4c
-
- $unknown1 = pack("V", 0);
-
- $pps_ts1s = pack("V", 0); // 0x64
- $pps_ts1d = pack("V", 0); // 0x68
- $pps_ts2s = pack("V", 0); // 0x6c
- $pps_ts2d = pack("V", 0); // 0x70
- $pps_sb = pack("V", $start); // 0x74
- $pps_size = pack("V", $size); // 0x78
-
-
- fwrite($this->_filehandle,$rawname);
- for($i=0; $i < (64 -$length); $i++) {
- fwrite($this->_filehandle,$zero);
- }
- fwrite($this->_filehandle,$pps_sizeofname);
- fwrite($this->_filehandle,$pps_type);
- fwrite($this->_filehandle,$pps_prev);
- fwrite($this->_filehandle,$pps_next);
- fwrite($this->_filehandle,$pps_dir);
- for($i=0; $i < 5; $i++) {
- fwrite($this->_filehandle,$unknown1);
- }
- fwrite($this->_filehandle,$pps_ts1s);
- fwrite($this->_filehandle,$pps_ts1d);
- fwrite($this->_filehandle,$pps_ts2d);
- fwrite($this->_filehandle,$pps_ts2d);
- fwrite($this->_filehandle,$pps_sb);
- fwrite($this->_filehandle,$pps_size);
- fwrite($this->_filehandle,$unknown1);
- }
-
- /**
- * Pad the end of the file
- *
- * @access private
- */
- function _writePadding()
- {
- $biffsize = $this->_biffsize;
- if ($biffsize < 4096) {
- $min_size = 4096;
- }
- else {
- $min_size = 512;
- }
- if ($biffsize % $min_size != 0)
- {
- $padding = $min_size - ($biffsize % $min_size);
- for($i=0; $i < $padding; $i++) {
- fwrite($this->_filehandle,"\0");
- }
- }
- }
- }
- ?>
-