Current File : /home/langpiergz/www/wp-content/plugins/wp-statistics/includes/libraries/ExportData.php
<?php
abstract class ExportData {
protected $exportTo; // Set in constructor to one of 'browser', 'file', 'string'
protected $stringData; // stringData so far, used if export string mode
protected $tempFile; // handle to temp file (for export file mode)
protected $tempFilename; // temp file name and path (for export file mode)
public $filename; // file mode: the output file name; browser mode: file name for download; string mode: not used
public function __construct( $exportTo = "browser", $filename = "exportdata" ) {
if ( ! in_array( $exportTo, array( 'browser', 'file', 'string' ) ) ) {
throw new Exception( "$exportTo is not a valid ExportData export type" );
}
$this->exportTo = $exportTo;
$this->filename = $filename;
}
public function initialize() {
switch ( $this->exportTo ) {
case 'browser':
$this->sendHttpHeaders();
break;
case 'string':
$this->stringData = '';
break;
case 'file':
$this->tempFilename = tempnam( sys_get_temp_dir(), 'exportdata' );
$this->tempFile = fopen( $this->tempFilename, "w" );
break;
}
$this->write( $this->generateHeader() );
}
public function addRow( $row ) {
$this->write( $this->generateRow( $row ) );
}
public function finalize() {
$this->write( $this->generateFooter() );
switch ( $this->exportTo ) {
case 'browser':
flush();
break;
case 'string':
// do nothing
break;
case 'file':
// close temp file and move it to correct location
fclose( $this->tempFile );
rename( $this->tempFilename, $this->filename );
break;
}
}
public function getString() {
return $this->stringData;
}
abstract public function sendHttpHeaders();
protected function write( $data ) {
switch ( $this->exportTo ) {
case 'browser':
echo $data; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
break;
case 'string':
$this->stringData .= $data;
break;
case 'file':
fwrite( $this->tempFile, $data );
break;
}
}
protected function generateHeader() {
// can be overridden by subclass to return any data that goes at the top of the exported file
}
protected function generateFooter() {
// can be overridden by subclass to return any data that goes at the bottom of the exported file
}
// In subclasses generateRow will take $row array and return string of it formatted for export type
abstract protected function generateRow( $row );
}
/**
* ExportDataTSV - Exports to TSV (tab separated value) format.
*/
class ExportDataTSV extends ExportData {
function generateRow( $row ) {
foreach ( $row as $key => $value ) {
// Escape inner quotes and wrap all contents in new quotes.
// Note that we are using \" to escape double quote not ""
$row[ $key ] = '"' . str_replace( '"', '\"', $value ) . '"';
}
return implode( "\t", $row ) . "\n";
}
function sendHttpHeaders() {
header( "Content-type: text/tab-separated-values" );
header( "Content-Disposition: attachment; filename=" . basename( $this->filename ) );
}
}
/**
* ExportDataCSV - Exports to CSV (comma separated value) format.
*/
class ExportDataCSV extends ExportData {
function generateRow( $row ) {
foreach ( $row as $key => $value ) {
// Compatibility
$value = $value ? $value : '';
// Escape inner quotes and wrap all contents in new quotes.
// Note that we are using \" to escape double quote not ""
$row[ $key ] = '"' . str_replace( '"', '\"', $value ) . '"';
}
return implode( ",", $row ) . "\n";
}
function sendHttpHeaders() {
header( "Content-type: text/csv" );
header( "Content-Disposition: attachment; filename=" . basename( $this->filename ) );
}
}
/**
* Class ExportDataExcel
*/
class ExportDataExcel extends ExportData {
const XmlHeader = "<?xml version=\"1.0\" encoding=\"%s\"?\>\n<Workbook xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\" xmlns:x=\"urn:schemas-microsoft-com:office:excel\" xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\" xmlns:html=\"http://www.w3.org/TR/REC-html40\">";
const XmlFooter = "</Workbook>";
public $encoding = 'UTF-8'; // encoding type to specify in file.
// Note that you're on your own for making sure your data is actually encoded to this encoding
public $title = 'Sheet1'; // title for Worksheet
function generateHeader() {
// workbook header
$output = stripslashes( sprintf( self::XmlHeader, $this->encoding ) ) . "\n";
// Set up styles
$output .= "<Styles>\n";
$output .= "<Style ss:ID=\"sDT\"><NumberFormat ss:Format=\"Short Date\"/></Style>\n";
$output .= "</Styles>\n";
// worksheet header
$output .= sprintf( "<Worksheet ss:Name=\"%s\">\n <Table>\n", htmlentities( $this->title ) );
return $output;
}
function generateFooter() {
$output = '';
// worksheet footer
$output .= " </Table>\n</Worksheet>\n";
// workbook footer
$output .= self::XmlFooter;
return $output;
}
function generateRow( $row ) {
$output = '';
$output .= " <Row>\n";
foreach ( $row as $k => $v ) {
$output .= $this->generateCell( $v );
}
$output .= " </Row>\n";
return $output;
}
private function generateCell( $item ) {
$output = '';
$style = '';
// Tell Excel to treat as a number. Note that Excel only stores roughly 15 digits, so keep
// as text if number is longer than that.
if ( preg_match( "/^-?\d+(?:[.,]\d+)?$/", $item ) && ( strlen( $item ) < 15 ) ) {
$type = 'Number';
}
// Sniff for valid dates; should look something like 2010-07-14 or 7/14/2010 etc. Can
// also have an optional time after the date.
//
// Note we want to be very strict in what we consider a date. There is the possibility
// of really screwing up the data if we try to reformat a string that was not actually
// intended to represent a date.
elseif ( preg_match( "/^(\d{1,2}|\d{4})[\/\-]\d{1,2}[\/\-](\d{1,2}|\d{4})([^\d].+)?$/", $item ) &&
( $timestamp = strtotime( $item ) ) &&
( $timestamp > 0 ) &&
( $timestamp < strtotime( '+500 years' ) ) ) {
$type = 'DateTime';
$item = strftime( "%Y-%m-%dT%H:%M:%S", $timestamp );
$style = 'sDT'; // defined in header; tells excel to format date for display
} else {
$type = 'String';
}
$item = str_replace( ''', ''', htmlspecialchars( $item, ENT_QUOTES ) );
$output .= " ";
$output .= $style ? "<Cell ss:StyleID=\"$style\">" : "<Cell>";
$output .= sprintf( "<Data ss:Type=\"%s\">%s</Data>", $type, $item );
$output .= "</Cell>\n";
return $output;
}
function sendHttpHeaders() {
header( "Content-Type: application/vnd.ms-excel; charset=" . $this->encoding );
header( "Content-Disposition: inline; filename=\"" . basename( $this->filename ) . "\"" );
}
}
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