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SpreadsheetReader_ODS.php
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241 lines (215 loc) · 5.57 KB
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<?php
/**
* Class for parsing ODS files
*
* @author Martins Pilsetnieks
*/
class SpreadsheetReader_ODS implements Iterator, Countable
{
private $Options = array(
'TempDir' => '',
'ReturnDateTimeObjects' => false
);
/**
* @var string Path to temporary content file
*/
private $ContentPath = '';
/**
* @var XMLReader XML reader object
*/
private $Content = false;
private $Index = 0;
private $TableOpen = false;
private $RowOpen = false;
/**
* @param string Path to file
* @param array Options:
* TempDir => string Temporary directory path
* ReturnDateTimeObjects => bool True => dates and times will be returned as PHP DateTime objects, false => as strings
*/
public function __construct($Filepath, array $Options = null)
{
if (!is_readable($Filepath))
{
throw new Exception('SpreadsheetReader_ODS: File not readable ('.$Filepath.')');
}
$this -> TempDir = isset($Options['TempDir']) && is_writable($Options['TempDir']) ?
$Options['TempDir'] :
sys_get_temp_dir();
$this -> TempDir = rtrim($this -> TempDir, DIRECTORY_SEPARATOR);
$this -> TempDir = $this -> TempDir.DIRECTORY_SEPARATOR.uniqid().DIRECTORY_SEPARATOR;
$Zip = new ZipArchive;
$Status = $Zip -> open($Filepath);
if ($Status !== true)
{
throw new Exception('SpreadsheetReader_ODS: File not readable ('.$Filepath.') (Error '.$Status.')');
}
if ($Zip -> locateName('content.xml') !== false)
{
$Zip -> extractTo($this -> TempDir, 'content.xml');
$this -> ContentPath = $this -> TempDir.'content.xml';
}
$Zip -> close();
if ($this -> ContentPath && is_readable($this -> ContentPath))
{
$this -> Content = new XMLReader;
$this -> Content -> open($this -> ContentPath);
$this -> Valid = true;
}
}
/**
* Destructor, destroys all that remains (closes and deletes temp files)
*/
public function __destruct()
{
if ($this -> Content && $this -> Content instanceof XMLReader)
{
$this -> Content -> close();
unset($this -> Content);
}
if (file_exists($this -> ContentPath))
{
@unlink($this -> ContentPath);
unset($this -> ContentPath);
}
}
// !Iterator interface methods
/**
* Rewind the Iterator to the first element.
* Similar to the reset() function for arrays in PHP
*/
public function rewind()
{
if ($this -> Index > 0)
{
// If the worksheet was already iterated, XML file is reopened.
// Otherwise it should be at the beginning anyway
$this -> Content -> close();
$this -> Content -> open($this -> ContentPath);
$this -> Valid = true;
$this -> TableOpen = false;
$this -> RowOpen = false;
}
$this -> Index = 0;
}
/**
* Return the current element.
* Similar to the current() function for arrays in PHP
*
* @return mixed current element from the collection
*/
public function current()
{
if ($this -> Index == 0)
{
$this -> next();
$this -> Index--;
}
return $this -> CurrentRow;
}
/**
* Move forward to next element.
* Similar to the next() function for arrays in PHP
*/
public function next()
{
$this -> Index++;
$this -> CurrentRow = array();
if (!$this -> TableOpen)
{
while ($this -> Valid = $this -> Content -> read())
{
if ($this -> Content -> name == 'table:table' && $this -> Content -> nodeType != XMLReader::END_ELEMENT)
{
$this -> TableOpen = true;
break;
}
}
}
if ($this -> TableOpen && !$this -> RowOpen)
{
while ($this -> Valid = $this -> Content -> read())
{
switch ($this -> Content -> name)
{
case 'table:table':
$this -> TableOpen = false;
$this -> Content -> next('office:document-content');
$this -> Valid = false;
break 2;
case 'table:table-row':
if ($this -> Content -> nodeType != XMLReader::END_ELEMENT)
{
$this -> RowOpen = true;
break 2;
}
break;
}
}
}
if ($this -> RowOpen)
{
$LastCellContent = '';
while ($this -> Valid = $this -> Content -> read())
{
switch ($this -> Content -> name)
{
case 'table:table-cell':
if ($this -> Content -> nodeType == XMLReader::END_ELEMENT)
{
$this -> CurrentRow[] = $LastCellContent;
}
elseif ($this -> Content -> isEmptyElement)
{
$LastCellContent = '';
$this -> CurrentRow[] = '';
}
else
{
$LastCellContent = '';
}
case 'text:p':
if ($this -> Content -> nodeType != XMLReader::END_ELEMENT)
{
$LastCellContent = $this -> Content -> readString();
}
break;
case 'table:table-row':
$this -> RowOpen = false;
break 2;
}
}
}
return $this -> CurrentRow;
}
/**
* Return the identifying key of the current element.
* Similar to the key() function for arrays in PHP
*
* @return mixed either an integer or a string
*/
public function key()
{
return $this -> Index;
}
/**
* Check if there is a current element after calls to rewind() or next().
* Used to check if we've iterated to the end of the collection
*
* @return boolean FALSE if there's nothing more to iterate over
*/
public function valid()
{
return $this -> Valid;
}
// !Countable interface method
/**
* Ostensibly should return the count of the contained items but this just returns the number
* of rows read so far. It's not really correct but at least coherent.
*/
public function count()
{
return $this -> Index + 1;
}
}
?>