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Extract from cvs non GPL library

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Laurent Destailleur 2008-01-26 23:30:42 +00:00
parent fcb0c8c99f
commit 9e6c37e4a6
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25
htdocs/includes/phpexcelreader/README
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INTRODUCTION
Read data from Excel spread sheets without Microsoft!
Provides an API to allow any application to read Excel
documents. Written in PHP. Based on the the Java version by Andy Khan.
LINKS
OpenOffice.org's Documentation
http://sc.openoffice.org/excelfileformat.pdf
OLE2 Storage Documentation
http://jakarta.apache.org/poi/poifs/fileformat.html
Java API for reading, writing and modifying the contents of Excel spreadsheets
http://www.andykhan.com/
CONTACT
Vadim Tkachenko
vt@apachephp.com
INFO
For use encoding you must have installed iconv extension, otherwise data output in unicode
HOW TO USE
see example.php

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htdocs/includes/phpexcelreader/changelog.txt
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--------2k--------
BugFix :
added patch by Rberto Innocenti - robyinno to fix infinite loop on 64 bit processors.
fixed order of operations error on date fields. - bizon153
--------2j--------
Features:
added example2.php which demonstrates a more feature rich use
BugFix:
dates were being rolled back by one day

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htdocs/includes/phpexcelreader/excelreader.php
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htdocs/includes/phpexcelreader/oleread.inc
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<?php
define('NUM_BIG_BLOCK_DEPOT_BLOCKS_POS', 0x2c);
define('SMALL_BLOCK_DEPOT_BLOCK_POS', 0x3c);
define('ROOT_START_BLOCK_POS', 0x30);
define('BIG_BLOCK_SIZE', 0x200);
define('SMALL_BLOCK_SIZE', 0x40);
define('EXTENSION_BLOCK_POS', 0x44);
define('NUM_EXTENSION_BLOCK_POS', 0x48);
define('PROPERTY_STORAGE_BLOCK_SIZE', 0x80);
define('BIG_BLOCK_DEPOT_BLOCKS_POS', 0x4c);
define('SMALL_BLOCK_THRESHOLD', 0x1000);
// property storage offsets
define('SIZE_OF_NAME_POS', 0x40);
define('TYPE_POS', 0x42);
define('START_BLOCK_POS', 0x74);
define('SIZE_POS', 0x78);
define('IDENTIFIER_OLE', pack("CCCCCCCC",0xd0,0xcf,0x11,0xe0,0xa1,0xb1,0x1a,0xe1));
//echo 'ROOT_START_BLOCK_POS = '.ROOT_START_BLOCK_POS."\n";
//echo bin2hex($data[ROOT_START_BLOCK_POS])."\n";
//echo "a=";
//echo $data[ROOT_START_BLOCK_POS];
//function log
function GetInt4d($data, $pos)
{
$value = ord($data[$pos]) | (ord($data[$pos+1]) << 8) | (ord($data[$pos+2]) << 16) | (ord($data[$pos+3]) << 24);
if ($value>=4294967294)
{
$value=-2;
}
return $value;
}
class OLERead {
var $data = '';
function OLERead(){
}
function read($sFileName){
// check if file exist and is readable (Darko Miljanovic)
if(!is_readable($sFileName)) {
$this->error = 1;
return false;
}
$this->data = @file_get_contents($sFileName);
if (!$this->data) {
$this->error = 1;
return false;
}
//echo IDENTIFIER_OLE;
//echo 'start';
if (substr($this->data, 0, 8) != IDENTIFIER_OLE) {
$this->error = 1;
return false;
}
$this->numBigBlockDepotBlocks = GetInt4d($this->data, NUM_BIG_BLOCK_DEPOT_BLOCKS_POS);
$this->sbdStartBlock = GetInt4d($this->data, SMALL_BLOCK_DEPOT_BLOCK_POS);
$this->rootStartBlock = GetInt4d($this->data, ROOT_START_BLOCK_POS);
$this->extensionBlock = GetInt4d($this->data, EXTENSION_BLOCK_POS);
$this->numExtensionBlocks = GetInt4d($this->data, NUM_EXTENSION_BLOCK_POS);
/*
echo $this->numBigBlockDepotBlocks." ";
echo $this->sbdStartBlock." ";
echo $this->rootStartBlock." ";
echo $this->extensionBlock." ";
echo $this->numExtensionBlocks." ";
*/
//echo "sbdStartBlock = $this->sbdStartBlock\n";
$bigBlockDepotBlocks = array();
$pos = BIG_BLOCK_DEPOT_BLOCKS_POS;
// echo "pos = $pos";
$bbdBlocks = $this->numBigBlockDepotBlocks;
if ($this->numExtensionBlocks != 0) {
$bbdBlocks = (BIG_BLOCK_SIZE - BIG_BLOCK_DEPOT_BLOCKS_POS)/4;
}
for ($i = 0; $i < $bbdBlocks; $i++) {
$bigBlockDepotBlocks[$i] = GetInt4d($this->data, $pos);
$pos += 4;
}
for ($j = 0; $j < $this->numExtensionBlocks; $j++) {
$pos = ($this->extensionBlock + 1) * BIG_BLOCK_SIZE;
$blocksToRead = min($this->numBigBlockDepotBlocks - $bbdBlocks, BIG_BLOCK_SIZE / 4 - 1);
for ($i = $bbdBlocks; $i < $bbdBlocks + $blocksToRead; $i++) {
$bigBlockDepotBlocks[$i] = GetInt4d($this->data, $pos);
$pos += 4;
}
$bbdBlocks += $blocksToRead;
if ($bbdBlocks < $this->numBigBlockDepotBlocks) {
$this->extensionBlock = GetInt4d($this->data, $pos);
}
}
// var_dump($bigBlockDepotBlocks);
// readBigBlockDepot
$pos = 0;
$index = 0;
$this->bigBlockChain = array();
for ($i = 0; $i < $this->numBigBlockDepotBlocks; $i++) {
$pos = ($bigBlockDepotBlocks[$i] + 1) * BIG_BLOCK_SIZE;
//echo "pos = $pos";
for ($j = 0 ; $j < BIG_BLOCK_SIZE / 4; $j++) {
$this->bigBlockChain[$index] = GetInt4d($this->data, $pos);
$pos += 4 ;
$index++;
}
}
//var_dump($this->bigBlockChain);
//echo '=====2';
// readSmallBlockDepot();
$pos = 0;
$index = 0;
$sbdBlock = $this->sbdStartBlock;
$this->smallBlockChain = array();
while ($sbdBlock != -2) {
$pos = ($sbdBlock + 1) * BIG_BLOCK_SIZE;
for ($j = 0; $j < BIG_BLOCK_SIZE / 4; $j++) {
$this->smallBlockChain[$index] = GetInt4d($this->data, $pos);
$pos += 4;
$index++;
}
$sbdBlock = $this->bigBlockChain[$sbdBlock];
}
// readData(rootStartBlock)
$block = $this->rootStartBlock;
$pos = 0;
$this->entry = $this->__readData($block);
/*
while ($block != -2) {
$pos = ($block + 1) * BIG_BLOCK_SIZE;
$this->entry = $this->entry.substr($this->data, $pos, BIG_BLOCK_SIZE);
$block = $this->bigBlockChain[$block];
}
*/
//echo '==='.$this->entry."===";
$this->__readPropertySets();
}
function __readData($bl) {
$block = $bl;
$pos = 0;
$data = '';
while ($block != -2) {
$pos = ($block + 1) * BIG_BLOCK_SIZE;
$data = $data.substr($this->data, $pos, BIG_BLOCK_SIZE);
//echo "pos = $pos data=$data\n";
$block = $this->bigBlockChain[$block];
}
return $data;
}
function __readPropertySets(){
$offset = 0;
//var_dump($this->entry);
while ($offset < strlen($this->entry)) {
$d = substr($this->entry, $offset, PROPERTY_STORAGE_BLOCK_SIZE);
$nameSize = ord($d[SIZE_OF_NAME_POS]) | (ord($d[SIZE_OF_NAME_POS+1]) << 8);
$type = ord($d[TYPE_POS]);
//$maxBlock = strlen($d) / BIG_BLOCK_SIZE - 1;
$startBlock = GetInt4d($d, START_BLOCK_POS);
$size = GetInt4d($d, SIZE_POS);
$name = '';
for ($i = 0; $i < $nameSize ; $i++) {
$name .= $d[$i];
}
$name = str_replace("\x00", "", $name);
$this->props[] = array (
'name' => $name,
'type' => $type,
'startBlock' => $startBlock,
'size' => $size);
if (($name == "Workbook") || ($name == "Book")) {
$this->wrkbook = count($this->props) - 1;
}
if ($name == "Root Entry") {
$this->rootentry = count($this->props) - 1;
}
//echo "name ==$name=\n";
$offset += PROPERTY_STORAGE_BLOCK_SIZE;
}
}
function getWorkBook(){
if ($this->props[$this->wrkbook]['size'] < SMALL_BLOCK_THRESHOLD){
// getSmallBlockStream(PropertyStorage ps)
$rootdata = $this->__readData($this->props[$this->rootentry]['startBlock']);
$streamData = '';
$block = $this->props[$this->wrkbook]['startBlock'];
//$count = 0;
$pos = 0;
while ($block != -2) {
$pos = $block * SMALL_BLOCK_SIZE;
$streamData .= substr($rootdata, $pos, SMALL_BLOCK_SIZE);
$block = $this->smallBlockChain[$block];
}
return $streamData;
}else{
$numBlocks = $this->props[$this->wrkbook]['size'] / BIG_BLOCK_SIZE;
if ($this->props[$this->wrkbook]['size'] % BIG_BLOCK_SIZE != 0) {
$numBlocks++;
}
if ($numBlocks == 0) return '';
//echo "numBlocks = $numBlocks\n";
//byte[] streamData = new byte[numBlocks * BIG_BLOCK_SIZE];
//print_r($this->wrkbook);
$streamData = '';
$block = $this->props[$this->wrkbook]['startBlock'];
//$count = 0;
$pos = 0;
//echo "block = $block";
while ($block != -2) {
$pos = ($block + 1) * BIG_BLOCK_SIZE;
$streamData .= substr($this->data, $pos, BIG_BLOCK_SIZE);
$block = $this->bigBlockChain[$block];
}
//echo 'stream'.$streamData;
return $streamData;
}
}
}
?>