Source for file Workbook.php
Documentation is available at Workbook.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
* 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.
* 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 'Spreadsheet/Excel/Writer/Format.php';
require_once 'Spreadsheet/Excel/Writer/BIFFwriter.php';
require_once 'Spreadsheet/Excel/Writer/Worksheet.php';
require_once 'Spreadsheet/Excel/Writer/Parser.php';
require_once 'OLE/PPS/Root.php';
require_once 'OLE/PPS/File.php';
* Class for generating Excel Spreadsheets
* @author Xavier Noguer <xnoguer@rezebra.com>
* @package Spreadsheet_Excel_Writer
* Filename for the Workbook
* Flag for 1904 date system (0 => base date is 1900, 1 => base date is 1904)
* The active worksheet of the workbook (0 indexed)
* 1st displayed worksheet in the workbook (0 indexed)
* Number of workbook tabs selected
* Index for creating adding new formats to the workbook
* Flag for preventing close from being called twice.
* The BIFF file size for the workbook.
* @see _calcSheetOffsets()
* The default sheetname for all sheets created.
* Array containing references to all of this workbook's worksheets
* Array of sheetnames for creating the EXTERNSHEET records
* Array containing references to all of this workbook's formats
* Array containing the colour palette
* The default format for URLs.
* The codepage indicates the text encoding used for strings
* The country code used for localization
* number of bytes for sizeinfo of strings
* @param string filename for storing the workbook. "-" for writing to stdout.
// It needs to call its parent's constructor explicitly
$this->_xf_index =
16; // 15 style XF's and 1 cell XF.
$this->_codepage =
0x04E4; // FIXME: should change for BIFF8
$this->_string_sizeinfo =
3;
// Add the default format for hyperlinks
$this->_str_table =
array();
$this->_setPaletteXl97();
* Calls finalization methods.
* This method should always be the last one to be called on every workbook
* @return mixed true on success. PEAR_Error on failure
if ($this->_fileclosed) { // Prevent close() from being called twice.
$res =
$this->_storeWorkbook();
* An accessor for the _worksheets[] array
* Returns an array of the worksheet objects in a workbook
* It actually calls to worksheets()
* An accessor for the _worksheets[] array.
* Returns an array of the worksheet objects in a workbook
* This method exists just to access experimental functionality
* from BIFF8. It will be deprecated !
* Only possible value is 8 (Excel 97/2000).
* For any other value it fails silently.
* @param integer $version The BIFF version
if ($version ==
8) { // only accept version 8
// change BIFFwriter limit for CONTINUE records
$this->_parser->_BIFF_version =
$version;
// change version for all worksheets too
for ($i =
0; $i <
$total_worksheets; $i++
) {
// change version for all formats too
for ($i =
0; $i <
$total_formats; $i++
) {
$this->_formats[$i]->_BIFF_version =
$version;
* Set the country identifier for the workbook
* @param integer $code Is the international calling country code for the
* Add a new worksheet to the Excel workbook.
* If no name is given the name of the worksheet will be Sheeti$i, with
* @param string $name the optional name of the worksheet
* @return mixed reference to a worksheet object on success, PEAR_Error
$name =
$sheetname.
($index+
1);
// Check that sheetname is <= 31 chars (Excel limit before BIFF8).
return $this->raiseError("Sheetname $name must be <= 31 chars");
// Check that the worksheet name doesn't already exist: a fatal Excel error.
for ($i =
0; $i <
$total_worksheets; $i++
) {
return $this->raiseError("Worksheet '$name' already exists");
$this->_str_total, $this->_str_unique,
$this->_worksheets[$index] =
&$worksheet; // Store ref for iterator
$this->_sheetnames[$index] =
$name; // Store EXTERNSHEET names
$this->_parser->setExtSheet($name, $index); // Register worksheet name with parser
* Add a new format to the Excel workbook.
* Also, pass any properties to the Format constructor.
* @param array $properties array with properties for initializing the format.
* @return &Spreadsheet_Excel_Writer_Format reference to an Excel Format
* @return &Spreadsheet_Excel_Writer_Validator reference to a Validator
include_once 'Spreadsheet/Excel/Writer/Validator.php';
/* FIXME: check for successful inclusion*/
* Change the RGB components of the elements in the colour palette.
* @param integer $index colour index
* @param integer $red red RGB value [0-255]
* @param integer $green green RGB value [0-255]
* @param integer $blue blue RGB value [0-255]
* @return integer The palette index for the custom color
// Match a HTML #xxyyzz style parameter
/*if (defined $_[1] and $_[1] =~ /^#(\w\w)(\w\w)(\w\w)/ ) {
@_ = ($_[0], hex $1, hex $2, hex $3);
// Check that the colour index is the right range
if ($index <
8 or $index >
64) {
// TODO: assign real error codes
return $this->raiseError("Color index $index outside range: 8 <= index <= 64");
// Check that the colour components are in the right range
if (($red <
0 or $red >
255) ||
($green <
0 or $green >
255) ||
($blue <
0 or $blue >
255))
return $this->raiseError("Color component outside range: 0 <= color <= 255");
$index -=
8; // Adjust colour index (wingless dragonfly)
$this->_palette[$index] =
array($red, $green, $blue, 0);
* Sets the colour palette to the Excel 97+ default.
function _setPaletteXl97()
array(0x00, 0x00, 0x00, 0x00), // 8
array(0xff, 0xff, 0xff, 0x00), // 9
array(0xff, 0x00, 0x00, 0x00), // 10
array(0x00, 0xff, 0x00, 0x00), // 11
array(0x00, 0x00, 0xff, 0x00), // 12
array(0xff, 0xff, 0x00, 0x00), // 13
array(0xff, 0x00, 0xff, 0x00), // 14
array(0x00, 0xff, 0xff, 0x00), // 15
array(0x80, 0x00, 0x00, 0x00), // 16
array(0x00, 0x80, 0x00, 0x00), // 17
array(0x00, 0x00, 0x80, 0x00), // 18
array(0x80, 0x80, 0x00, 0x00), // 19
array(0x80, 0x00, 0x80, 0x00), // 20
array(0x00, 0x80, 0x80, 0x00), // 21
array(0xc0, 0xc0, 0xc0, 0x00), // 22
array(0x80, 0x80, 0x80, 0x00), // 23
array(0x99, 0x99, 0xff, 0x00), // 24
array(0x99, 0x33, 0x66, 0x00), // 25
array(0xff, 0xff, 0xcc, 0x00), // 26
array(0xcc, 0xff, 0xff, 0x00), // 27
array(0x66, 0x00, 0x66, 0x00), // 28
array(0xff, 0x80, 0x80, 0x00), // 29
array(0x00, 0x66, 0xcc, 0x00), // 30
array(0xcc, 0xcc, 0xff, 0x00), // 31
array(0x00, 0x00, 0x80, 0x00), // 32
array(0xff, 0x00, 0xff, 0x00), // 33
array(0xff, 0xff, 0x00, 0x00), // 34
array(0x00, 0xff, 0xff, 0x00), // 35
array(0x80, 0x00, 0x80, 0x00), // 36
array(0x80, 0x00, 0x00, 0x00), // 37
array(0x00, 0x80, 0x80, 0x00), // 38
array(0x00, 0x00, 0xff, 0x00), // 39
array(0x00, 0xcc, 0xff, 0x00), // 40
array(0xcc, 0xff, 0xff, 0x00), // 41
array(0xcc, 0xff, 0xcc, 0x00), // 42
array(0xff, 0xff, 0x99, 0x00), // 43
array(0x99, 0xcc, 0xff, 0x00), // 44
array(0xff, 0x99, 0xcc, 0x00), // 45
array(0xcc, 0x99, 0xff, 0x00), // 46
array(0xff, 0xcc, 0x99, 0x00), // 47
array(0x33, 0x66, 0xff, 0x00), // 48
array(0x33, 0xcc, 0xcc, 0x00), // 49
array(0x99, 0xcc, 0x00, 0x00), // 50
array(0xff, 0xcc, 0x00, 0x00), // 51
array(0xff, 0x99, 0x00, 0x00), // 52
array(0xff, 0x66, 0x00, 0x00), // 53
array(0x66, 0x66, 0x99, 0x00), // 54
array(0x96, 0x96, 0x96, 0x00), // 55
array(0x00, 0x33, 0x66, 0x00), // 56
array(0x33, 0x99, 0x66, 0x00), // 57
array(0x00, 0x33, 0x00, 0x00), // 58
array(0x33, 0x33, 0x00, 0x00), // 59
array(0x99, 0x33, 0x00, 0x00), // 60
array(0x99, 0x33, 0x66, 0x00), // 61
array(0x33, 0x33, 0x99, 0x00), // 62
array(0x33, 0x33, 0x33, 0x00), // 63
* Assemble worksheets into a workbook and send the BIFF data to an OLE
* @return mixed true on success. PEAR_Error on failure
function _storeWorkbook()
// Ensure that at least one worksheet has been selected.
// Calculate the number of selected worksheet tabs and call the finalization
// methods for each worksheet
for ($i =
0; $i <
$total_worksheets; $i++
) {
$this->_storeBof(0x0005);
$this->_storeExterns(); // For print area and repeat rows
$this->_storeNames(); // For print area and repeat rows
$this->_storeAllNumFormats();
$this->_storeAllStyles();
$this->_calcSheetOffsets();
// Add BOUNDSHEET records
for ($i =
0; $i <
$total_worksheets; $i++
) {
//$this->_storeSupbookInternal();
/* TODO: store external SUPBOOK records and XCT and CRN records
in case of external references for BIFF8 */
//$this->_storeExternsheetBiff8();
$this->_storeSharedStringsTable();
// Store the workbook in an OLE container
$res =
$this->_storeOLEFile();
* Store the workbook in an OLE container
* @return mixed true on success. PEAR_Error on failure
$OLE =
new OLE_PPS_File(OLE::Asc2Ucs('Workbook'));
$OLE =
new OLE_PPS_File(OLE::Asc2Ucs('Book'));
return $this->raiseError("OLE Error: ".
$res->getMessage());
$OLE->append($this->_data);
for ($i =
0; $i <
$total_worksheets; $i++
) {
$root =
new OLE_PPS_Root(time(), time(), array($OLE));
return $this->raiseError("OLE Error: ".
$res->getMessage());
* Calculate offsets for Worksheet BOF records.
function _calcSheetOffsets()
$boundsheet_length =
12; // fixed length for a BOUNDSHEET record
// add the length of the SST
/* TODO: check this works for a lot of strings (> 8224 bytes) */
$offset +=
$this->_calculateSharedStringsSizes();
$offset +=
8; // adding COUNTRY record
// add the lenght of SUPBOOK, EXTERNSHEET and NAME records
//$offset += 8; // FIXME: calculate real value when storing the records
// add the length of the BOUNDSHEET records
for ($i =
0; $i <
$total_worksheets; $i++
) {
for ($i =
0; $i <
$total_worksheets; $i++
) {
* Store the Excel FONT records.
function _storeAllFonts()
// tmp_format is added by the constructor. We use this to write the default XF's
$font =
$format->getFont();
// Note: Fonts are 0-indexed. According to the SDK there is no index 4,
// so the following fonts are 0, 1, 2, 3, 5
for ($i =
1; $i <=
5; $i++
){
// Iterate through the XF objects and write a FONT record if it isn't the
// same as the default FONT and if it hasn't already been used.
$index =
6; // The first user defined FONT
$key =
$format->getFontKey(); // The default font from _tmp_format
$fonts[$key] =
0; // Index of the default font
for ($i =
0; $i <
$total_formats; $i++
) {
$key =
$this->_formats[$i]->getFontKey();
if (isset
($fonts[$key])) {
// FONT has already been used
$this->_formats[$i]->font_index =
$fonts[$key];
$this->_formats[$i]->font_index =
$index;
* Store user defined numerical formats i.e. FORMAT records
function _storeAllNumFormats()
// Leaning num_format syndrome
$hash_num_formats =
array();
// Iterate through the XF objects and write a FORMAT record if it isn't a
// built-in format type and if the FORMAT string hasn't already been used.
for ($i =
0; $i <
$total_formats; $i++
) {
$num_format =
$this->_formats[$i]->_num_format;
// Check if $num_format is an index to a built-in format.
// Also check for a string of zeros, which is a valid format string
// but would evaluate to zero.
if (preg_match("/^\d+$/", $num_format)) { // built-in format
if (isset
($hash_num_formats[$num_format])) {
// FORMAT has already been used
$this->_formats[$i]->_num_format =
$hash_num_formats[$num_format];
$hash_num_formats[$num_format] =
$index;
$this->_formats[$i]->_num_format =
$index;
// Write the new FORMAT records starting from 0xA4
foreach ($num_formats as $num_format) {
$this->_storeNumFormat($num_format,$index);
// _tmp_format is added by the constructor. We use this to write the default XF's
// The default font index is 0
for ($i =
0; $i <=
14; $i++
) {
$xf =
$format->getXf('style'); // Style XF
$xf =
$format->getXf('cell'); // Cell XF
for ($i =
0; $i <
$total_formats; $i++
) {
$xf =
$this->_formats[$i]->getXf('cell');
* Write all STYLE records.
function _storeAllStyles()
* Write the EXTERNCOUNT and EXTERNSHEET records. These are used as indexes for
// Create EXTERNCOUNT with number of worksheets
// Create EXTERNSHEET for each worksheet
$this->_storeExternsheet($sheetname);
* Write the NAME record to define the print area and the repeat rows and cols.
// Create the print area NAME records
for ($i =
0; $i <
$total_worksheets; $i++
) {
// Write a Name record if the print area has been defined
// Create the print title NAME records
for ($i =
0; $i <
$total_worksheets; $i++
) {
// Determine if row + col, row, col or nothing has been defined
// and write the appropriate record
if (isset
($rowmin) && isset
($colmin)) {
// Row and column titles have been defined.
// Row title has been defined.
} elseif (isset
($rowmin)) {
// Row title has been defined.
} elseif (isset
($colmin)) {
// Column title has been defined.
// Print title hasn't been defined.
/******************************************************************************
* Stores the CODEPAGE biff record.
function _storeCodepage()
$record =
0x0042; // Record identifier
$length =
0x0002; // Number of bytes to follow
$header =
pack('vv', $record, $length);
$this->_append($header .
$data);
* Write Excel BIFF WINDOW1 record.
$record =
0x003D; // Record identifier
$length =
0x0012; // Number of bytes to follow
$xWn =
0x0000; // Horizontal position of window
$yWn =
0x0000; // Vertical position of window
$dxWn =
0x25BC; // Width of window
$dyWn =
0x1572; // Height of window
$grbit =
0x0038; // Option flags
$ctabsel =
$this->_selected; // Number of workbook tabs selected
$wTabRatio =
0x0258; // Tab to scrollbar ratio
$itabFirst =
$this->_firstsheet; // 1st displayed worksheet
$header =
pack("vv", $record, $length);
$data =
pack("vvvvvvvvv", $xWn, $yWn, $dxWn, $dyWn,
$this->_append($header .
$data);
* Writes Excel BIFF BOUNDSHEET record.
* FIXME: inconsistent with BIFF documentation
* @param string $sheetname Worksheet name
* @param integer $offset Location of worksheet BOF
function _storeBoundsheet($sheetname,$offset)
$record =
0x0085; // Record identifier
$length =
0x08 +
strlen($sheetname); // Number of bytes to follow
$length =
0x07 +
strlen($sheetname); // Number of bytes to follow
$grbit =
0x0000; // Visibility and sheet type
$cch =
strlen($sheetname); // Length of sheet name
$header =
pack("vv", $record, $length);
$data =
pack("Vvv", $offset, $grbit, $cch);
$data =
pack("VvC", $offset, $grbit, $cch);
$this->_append($header.
$data.
$sheetname);
* Write Internal SUPBOOK record
function _storeSupbookInternal()
$record =
0x01AE; // Record identifier
$length =
0x0004; // Bytes to follow
$header =
pack("vv", $record, $length);
$this->_append($header .
$data);
* Writes the Excel BIFF EXTERNSHEET record. These references are used by
* @param string $sheetname Worksheet name
function _storeExternsheetBiff8()
$record =
0x0017; // Record identifier
$length =
2 +
6 *
$total_references; // Number of bytes to follow
$supbook_index =
0; // FIXME: only using internal SUPBOOK record
$header =
pack("vv", $record, $length);
$data =
pack('v', $total_references);
for ($i =
0; $i <
$total_references; $i++
) {
$data .=
$this->_parser->_references[$i];
$this->_append($header .
$data);
* Write Excel BIFF STYLE records.
$record =
0x0293; // Record identifier
$length =
0x0004; // Bytes to follow
$ixfe =
0x8000; // Index to style XF
$BuiltIn =
0x00; // Built-in style
$iLevel =
0xff; // Outline style level
$header =
pack("vv", $record, $length);
$data =
pack("vCC", $ixfe, $BuiltIn, $iLevel);
$this->_append($header .
$data);
* Writes Excel FORMAT record for non "built-in" numerical formats.
* @param string $format Custom format string
* @param integer $ifmt Format index code
function _storeNumFormat($format, $ifmt)
$record =
0x041E; // Record identifier
$length =
5 +
strlen($format); // Number of bytes to follow
$length =
3 +
strlen($format); // Number of bytes to follow
$cch =
strlen($format); // Length of format string
$header =
pack("vv", $record, $length);
$data =
pack("vvC", $ifmt, $cch, $encoding);
$data =
pack("vC", $ifmt, $cch);
$this->_append($header .
$data .
$format);
* Write DATEMODE record to indicate the date system in use (1904 or 1900).
function _storeDatemode()
$record =
0x0022; // Record identifier
$length =
0x0002; // Bytes to follow
$f1904 =
$this->_1904; // Flag for 1904 date system
$header =
pack("vv", $record, $length);
$data =
pack("v", $f1904);
$this->_append($header .
$data);
* Write BIFF record EXTERNCOUNT to indicate the number of external sheet
* references in the workbook.
* Excel only stores references to external sheets that are used in NAME.
* The workbook NAME record is required to define the print area and the repeat
* A similar method is used in Worksheet.php for a slightly different purpose.
* @param integer $cxals Number of external references
function _storeExterncount($cxals)
$record =
0x0016; // Record identifier
$length =
0x0002; // Number of bytes to follow
$header =
pack("vv", $record, $length);
$data =
pack("v", $cxals);
$this->_append($header .
$data);
* Writes the Excel BIFF EXTERNSHEET record. These references are used by
* formulas. NAME record is required to define the print area and the repeat
* A similar method is used in Worksheet.php for a slightly different purpose.
* @param string $sheetname Worksheet name
function _storeExternsheet($sheetname)
$record =
0x0017; // Record identifier
$length =
0x02 +
strlen($sheetname); // Number of bytes to follow
$cch =
strlen($sheetname); // Length of sheet name
$rgch =
0x03; // Filename encoding
$header =
pack("vv", $record, $length);
$data =
pack("CC", $cch, $rgch);
$this->_append($header .
$data .
$sheetname);
* Store the NAME record in the short format that is used for storing the print
* area, repeat rows only and repeat columns only.
* @param integer $index Sheet index
* @param integer $type Built-in name type
* @param integer $rowmin Start row
* @param integer $rowmax End row
* @param integer $colmin Start colum
* @param integer $colmax End column
function _storeNameShort($index, $type, $rowmin, $rowmax, $colmin, $colmax)
$record =
0x0018; // Record identifier
$length =
0x0024; // Number of bytes to follow
$grbit =
0x0020; // Option flags
$chKey =
0x00; // Keyboard shortcut
$cch =
0x01; // Length of text name
$cce =
0x0015; // Length of text definition
$ixals =
$index +
1; // Sheet index
$itab =
$ixals; // Equal to ixals
$cchCustMenu =
0x00; // Length of cust menu text
$cchDescription =
0x00; // Length of description text
$cchHelptopic =
0x00; // Length of help topic text
$cchStatustext =
0x00; // Length of status bar text
$rgch =
$type; // Built-in name type
$unknown04 =
0xffff-
$index;
$header =
pack("vv", $record, $length);
$data =
pack("v", $grbit);
$data .=
pack("C", $chKey);
$data .=
pack("C", $cch);
$data .=
pack("v", $cce);
$data .=
pack("v", $ixals);
$data .=
pack("v", $itab);
$data .=
pack("C", $cchCustMenu);
$data .=
pack("C", $cchDescription);
$data .=
pack("C", $cchHelptopic);
$data .=
pack("C", $cchStatustext);
$data .=
pack("C", $rgch);
$data .=
pack("C", $unknown03);
$data .=
pack("v", $unknown04);
$data .=
pack("v", $unknown05);
$data .=
pack("v", $unknown06);
$data .=
pack("v", $unknown07);
$data .=
pack("v", $unknown08);
$data .=
pack("v", $index);
$data .=
pack("v", $index);
$data .=
pack("v", $rowmin);
$data .=
pack("v", $rowmax);
$data .=
pack("C", $colmin);
$data .=
pack("C", $colmax);
$this->_append($header .
$data);
* Store the NAME record in the long format that is used for storing the repeat
* rows and columns when both are specified. This shares a lot of code with
* _storeNameShort() but we use a separate method to keep the code clean.
* Code abstraction for reuse can be carried too far, and I should know. ;-)
* @param integer $index Sheet index
* @param integer $type Built-in name type
* @param integer $rowmin Start row
* @param integer $rowmax End row
* @param integer $colmin Start colum
* @param integer $colmax End column
function _storeNameLong($index, $type, $rowmin, $rowmax, $colmin, $colmax)
$record =
0x0018; // Record identifier
$length =
0x003d; // Number of bytes to follow
$grbit =
0x0020; // Option flags
$chKey =
0x00; // Keyboard shortcut
$cch =
0x01; // Length of text name
$cce =
0x002e; // Length of text definition
$ixals =
$index +
1; // Sheet index
$itab =
$ixals; // Equal to ixals
$cchCustMenu =
0x00; // Length of cust menu text
$cchDescription =
0x00; // Length of description text
$cchHelptopic =
0x00; // Length of help topic text
$cchStatustext =
0x00; // Length of status bar text
$rgch =
$type; // Built-in name type
$unknown04 =
0xffff-
$index;
$header =
pack("vv", $record, $length);
$data =
pack("v", $grbit);
$data .=
pack("C", $chKey);
$data .=
pack("C", $cch);
$data .=
pack("v", $cce);
$data .=
pack("v", $ixals);
$data .=
pack("v", $itab);
$data .=
pack("C", $cchCustMenu);
$data .=
pack("C", $cchDescription);
$data .=
pack("C", $cchHelptopic);
$data .=
pack("C", $cchStatustext);
$data .=
pack("C", $rgch);
$data .=
pack("C", $unknown01);
$data .=
pack("v", $unknown02);
$data .=
pack("C", $unknown03);
$data .=
pack("v", $unknown04);
$data .=
pack("v", $unknown05);
$data .=
pack("v", $unknown06);
$data .=
pack("v", $unknown07);
$data .=
pack("v", $unknown08);
$data .=
pack("v", $index);
$data .=
pack("v", $index);
$data .=
pack("v", 0x0000);
$data .=
pack("v", 0x3fff);
$data .=
pack("C", $colmin);
$data .=
pack("C", $colmax);
$data .=
pack("C", $unknown03);
$data .=
pack("v", $unknown04);
$data .=
pack("v", $unknown05);
$data .=
pack("v", $unknown06);
$data .=
pack("v", $unknown07);
$data .=
pack("v", $unknown08);
$data .=
pack("v", $index);
$data .=
pack("v", $index);
$data .=
pack("v", $rowmin);
$data .=
pack("v", $rowmax);
$data .=
pack("C", 0x00);
$data .=
pack("C", 0xff);
$data .=
pack("C", 0x10);
$this->_append($header .
$data);
* Stores the COUNTRY record for localization
$record =
0x008C; // Record identifier
$length =
4; // Number of bytes to follow
$header =
pack('vv', $record, $length);
/* using the same country code always for simplicity */
$this->_append($header .
$data);
* Stores the PALETTE biff record.
$record =
0x0092; // Record identifier
$length =
2 +
4 *
count($aref); // Number of bytes to follow
$ccv =
count($aref); // Number of RGB values to follow
$data =
''; // The RGB data
foreach ($aref as $color) {
foreach ($color as $byte) {
$data .=
pack("C",$byte);
$header =
pack("vvv", $record, $length, $ccv);
$this->_append($header .
$data);
* Handling of the SST continue blocks is complicated by the need to include an
* additional continuation byte depending on whether the string is split between
* blocks or whether it starts at the beginning of the block. (There are also
* additional complications that will arise later when/if Rich Strings are
function _calculateSharedStringsSizes()
/* Iterate through the strings to calculate the CONTINUE block sizes.
For simplicity we use the same size for the SST and CONTINUE records:
8228 : Maximum Excel97 block size
-4 : Length of block header
-8 : Length of additional SST header information
-8 : Arbitrary number to keep within _add_continue() limit = 8208
$this->_block_sizes =
array();
foreach (array_keys($this->_str_table) as $string) {
$string_length =
strlen($string);
$headerinfo =
unpack("vlength/Cencoding", $string);
$encoding =
$headerinfo["encoding"];
// Block length is the total length of the strings that will be
// written out in a single SST or CONTINUE block.
$block_length +=
$string_length;
// We can write the string if it doesn't cross a CONTINUE boundary
if ($block_length <
$continue_limit) {
$written +=
$string_length;
// Deal with the cases where the next string to be written will exceed
// the CONTINUE boundary. If the string is very long it may need to be
// written in more than one CONTINUE record.
while ($block_length >=
$continue_limit) {
// We need to avoid the case where a string is continued in the first
// n bytes that contain the string header information.
$header_length =
3; // Min string + header size -1
$space_remaining =
$continue_limit -
$written -
$continue;
/* TODO: Unicode data should only be split on char (2 byte)
boundaries. Therefore, in some cases we need to reduce the
// Only applies to Unicode strings
// Min string + header size -1
if ($space_remaining >
$header_length) {
// String contains 3 byte header => split on odd boundary
if (!$split_string &&
$space_remaining %
2 !=
1) {
// Split section without header => split on even boundary
else if ($split_string &&
$space_remaining %
2 ==
1) {
if ($space_remaining >
$header_length) {
// Write as much as possible of the string in the current block
$written +=
$space_remaining;
// Reduce the current block length by the amount written
$block_length -=
$continue_limit -
$continue -
$align;
// Store the max size for this block
$this->_block_sizes[] =
$continue_limit -
$align;
// If the current string was split then the next CONTINUE block
// should have the string continue flag (grbit) set unless the
// split string fits exactly into the remaining space.
// Store the max size for this block
$this->_block_sizes[] =
$written +
$continue;
// Not enough space to start the string in the current block
$block_length -=
$continue_limit -
$space_remaining -
$continue;
// If the string (or substr) is small enough we can write it in the
// new CONTINUE block. Else, go through the loop again to write it in
// one or more CONTINUE blocks
if ($block_length <
$continue_limit) {
$written =
$block_length;
// Store the max size for the last block unless it is empty
if ($written +
$continue) {
$this->_block_sizes[] =
$written +
$continue;
/* Calculate the total length of the SST and associated CONTINUEs (if any).
The SST record will have a length even if it contains no strings.
This length is required to set the offsets in the BOUNDSHEET records since
they must be written before the SST records
$tmp_block_sizes =
array();
$tmp_block_sizes =
$this->_block_sizes;
if (!empty($tmp_block_sizes)) {
while (!empty($tmp_block_sizes)) {
$length +=
4 +
array_shift($tmp_block_sizes); // CONTINUEs
* Write all of the workbooks strings into an indexed array.
* See the comments in _calculate_shared_string_sizes() for more information.
* The Excel documentation says that the SST record should be followed by an
* EXTSST record. The EXTSST record is a hash table that is used to optimise
* access to SST. However, despite the documentation it doesn't seem to be
* required so we will ignore it.
function _storeSharedStringsTable()
$record =
0x00fc; // Record identifier
$length =
0x0008; // Number of bytes to follow
// Iterate through the strings to calculate the CONTINUE block sizes
$tmp_block_sizes =
$this->_block_sizes;
// $tmp_block_sizes = array_reverse($this->_block_sizes);
// The SST record is required even if it contains no strings. Thus we will
if (!empty($tmp_block_sizes)) {
// Write the SST block header information
$header =
pack("vv", $record, $length);
$data =
pack("VV", $this->_str_total, $this->_str_unique);
$this->_append($header .
$data);
/* TODO: not good for performance */
foreach (array_keys($this->_str_table) as $string) {
$string_length =
strlen($string);
$headerinfo =
unpack("vlength/Cencoding", $string);
$encoding =
$headerinfo["encoding"];
// Block length is the total length of the strings that will be
// written out in a single SST or CONTINUE block.
$block_length +=
$string_length;
// We can write the string if it doesn't cross a CONTINUE boundary
if ($block_length <
$continue_limit) {
$written +=
$string_length;
// Deal with the cases where the next string to be written will exceed
// the CONTINUE boundary. If the string is very long it may need to be
// written in more than one CONTINUE record.
while ($block_length >=
$continue_limit) {
// We need to avoid the case where a string is continued in the first
// n bytes that contain the string header information.
$header_length =
3; // Min string + header size -1
$space_remaining =
$continue_limit -
$written -
$continue;
// Unicode data should only be split on char (2 byte) boundaries.
// Therefore, in some cases we need to reduce the amount of available
// space by 1 byte to ensure the correct alignment.
// Only applies to Unicode strings
// Min string + header size -1
if ($space_remaining >
$header_length) {
// String contains 3 byte header => split on odd boundary
if (!$split_string &&
$space_remaining %
2 !=
1) {
// Split section without header => split on even boundary
else if ($split_string &&
$space_remaining %
2 ==
1) {
if ($space_remaining >
$header_length) {
// Write as much as possible of the string in the current block
$tmp =
substr($string, 0, $space_remaining);
// The remainder will be written in the next block(s)
$string =
substr($string, $space_remaining);
// Reduce the current block length by the amount written
$block_length -=
$continue_limit -
$continue -
$align;
// If the current string was split then the next CONTINUE block
// should have the string continue flag (grbit) set unless the
// split string fits exactly into the remaining space.
// Not enough space to start the string in the current block
$block_length -=
$continue_limit -
$space_remaining -
$continue;
// Write the CONTINUE block header
if (!empty($this->_block_sizes)) {
$header =
pack('vv', $record, $length);
$header .=
pack('C', $encoding);
// If the string (or substr) is small enough we can write it in the
// new CONTINUE block. Else, go through the loop again to write it in
// one or more CONTINUE blocks
if ($block_length <
$continue_limit) {
$written =
$block_length;
Documentation generated on Wed, 09 Feb 2011 09:05:19 +0700 by phpDocumentor 1.4.2