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|
<?php
/**
* Piwik - free/libre analytics platform
*
* @link https://matomo.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik\DataTable\Renderer;
use Piwik\Common;
use Piwik\DataTable\Renderer;
use Piwik\DataTable\Simple;
use Piwik\DataTable;
use Piwik\Period;
use Piwik\Period\Range;
use Piwik\Piwik;
use Piwik\ProxyHttp;
/**
* CSV export
*
* When rendered using the default settings, a CSV report has the following characteristics:
* The first record contains headers for all the columns in the report.
* All rows have the same number of columns.
* The default field delimiter string is a comma (,).
* Formatting and layout are ignored.
*
*/
class Csv extends Renderer
{
/**
* Column separator
*
* @var string
*/
public $separator = ",";
/**
* Line end
*
* @var string
*/
public $lineEnd = "\n";
/**
* 'metadata' columns will be exported, prefixed by 'metadata_'
*
* @var bool
*/
public $exportMetadata = true;
/**
* Converts the content to unicode so that UTF8 characters (eg. chinese) can be imported in Excel
*
* @var bool
*/
public $convertToUnicode = true;
/**
* idSubtable will be exported in a column called 'idsubdatatable'
*
* @var bool
*/
public $exportIdSubtable = true;
/**
* This string is also hardcoded in archive,sh
*/
const NO_DATA_AVAILABLE = 'No data available';
private $unsupportedColumns = array();
/**
* Computes the dataTable output and returns the string/binary
*
* @return string
*/
public function render()
{
$str = $this->renderTable($this->table);
if (empty($str)) {
return self::NO_DATA_AVAILABLE;
}
$this->renderHeader();
$str = $this->convertToUnicode($str);
return $str;
}
/**
* Enables / Disables unicode converting
*
* @param $bool
*/
public function setConvertToUnicode($bool)
{
$this->convertToUnicode = $bool;
}
/**
* Sets the column separator
*
* @param $separator
*/
public function setSeparator($separator)
{
$this->separator = $separator;
}
/**
* Computes the output of the given data table
*
* @param DataTable|array $table
* @param array $allColumns
* @return string
*/
protected function renderTable($table, &$allColumns = array())
{
if (is_array($table)) {
// convert array to DataTable
$table = DataTable::makeFromSimpleArray($table);
}
if ($table instanceof DataTable\Map) {
$str = $this->renderDataTableMap($table, $allColumns);
} else {
$str = $this->renderDataTable($table, $allColumns);
}
return $str;
}
/**
* Computes the output of the given data table array
*
* @param DataTable\Map $table
* @param array $allColumns
* @return string
*/
protected function renderDataTableMap($table, &$allColumns = array())
{
$str = '';
foreach ($table->getDataTables() as $currentLinePrefix => $dataTable) {
$returned = explode("\n", $this->renderTable($dataTable, $allColumns));
// get rid of the columns names
$returned = array_slice($returned, 1);
// case empty datatable we don't print anything in the CSV export
// when in xml we would output <result date="2008-01-15" />
if (!empty($returned)) {
foreach ($returned as &$row) {
$row = $currentLinePrefix . $this->separator . $row;
}
$str .= "\n" . implode("\n", $returned);
}
}
// prepend table key to column list
$allColumns = array_merge(array($table->getKeyName() => true), $allColumns);
// add header to output string
$str = $this->getHeaderLine(array_keys($allColumns)) . $str;
return $str;
}
/**
* Converts the output of the given simple data table
*
* @param DataTable|Simple $table
* @param array $allColumns
* @return string
*/
protected function renderDataTable($table, &$allColumns = array())
{
if ($table instanceof Simple) {
$row = $table->getFirstRow();
if ($row !== false) {
$columnNameToValue = $row->getColumns();
if (count($columnNameToValue) == 1) {
// simple tables should only have one column, the value
$allColumns['value'] = true;
$value = array_values($columnNameToValue);
$str = 'value' . $this->lineEnd . $this->formatValue($value[0]);
return $str;
}
}
}
$csv = $this->makeArrayFromDataTable($table, $allColumns);
// now we make sure that all the rows in the CSV array have all the columns
foreach ($csv as &$row) {
foreach ($allColumns as $columnName => $true) {
if (!isset($row[$columnName])) {
$row[$columnName] = '';
}
}
}
$str = $this->buildCsvString($allColumns, $csv);
return $str;
}
/**
* Returns the CSV header line for a set of metrics. Will translate columns if desired.
*
* @param array $columnMetrics
* @return array
*/
private function getHeaderLine($columnMetrics)
{
foreach ($columnMetrics as $index => $value) {
if (in_array($value, $this->unsupportedColumns)) {
unset($columnMetrics[$index]);
}
}
if ($this->translateColumnNames) {
$columnMetrics = $this->translateColumnNames($columnMetrics);
}
foreach ($columnMetrics as &$value) {
$value = $this->formatValue($value);
}
return implode($this->separator, $columnMetrics);
}
/**
* Formats/Escapes the given value
*
* @param mixed $value
* @return string
*/
protected function formatValue($value)
{
if (is_string($value)
&& !is_numeric($value)
) {
$value = html_entity_decode($value, ENT_COMPAT, 'UTF-8');
} elseif ($value === false) {
$value = 0;
}
$value = $this->formatFormulas($value);
if (is_string($value)
&& (strpos($value, '"') !== false
|| strpos($value, $this->separator) !== false)
) {
$value = '"' . str_replace('"', '""', $value) . '"';
}
// in some number formats (e.g. German), the decimal separator is a comma
// we need to catch and replace this
if (is_numeric($value)) {
$value = (string)$value;
$value = str_replace(',', '.', $value);
}
return $value;
}
protected function formatFormulas($value)
{
// Excel / Libreoffice formulas may start with one of these characters
$formulaStartsWith = array('=', '+', '-', '@');
// remove first % sign and if string is still a number, return it as is
$valueWithoutFirstPercentSign = $this->removeFirstPercentSign($value);
if (empty($valueWithoutFirstPercentSign)
|| !is_string($value)
|| is_numeric($valueWithoutFirstPercentSign)) {
return $value;
}
$firstCharCellValue = $valueWithoutFirstPercentSign[0];
$isFormula = in_array($firstCharCellValue, $formulaStartsWith);
if($isFormula) {
return "'" . $value;
}
return $value;
}
/**
* Sends the http headers for csv file
*/
protected function renderHeader()
{
$fileName = Piwik::translate('General_Export');
$period = Common::getRequestVar('period', false);
$date = Common::getRequestVar('date', false);
if ($period || $date) {
// in test cases, there are no request params set
if ($period == 'range') {
$period = new Range($period, $date);
} elseif (strpos($date, ',') !== false) {
$period = new Range('range', $date);
} else {
$period = Period\Factory::build($period, $date);
}
$prettyDate = $period->getLocalizedLongString();
$meta = $this->getApiMetaData();
$fileName .= ' _ ' . $meta['name']
. ' _ ' . $prettyDate . '.csv';
}
// silent fail otherwise unit tests fail
Common::sendHeader('Content-Disposition: attachment; filename="' . $fileName . '"', true);
ProxyHttp::overrideCacheControlHeaders();
}
/**
* Flattens an array of column values so they can be outputted as CSV (which does not support
* nested structures).
*/
private function flattenColumnArray($columns, &$csvRow = array(), $csvColumnNameTemplate = '%s')
{
foreach ($columns as $name => $value) {
$csvName = sprintf($csvColumnNameTemplate, $this->getCsvColumnName($name));
if (is_array($value)) {
// if we're translating column names and this is an array of arrays, the column name
// format becomes a bit more complicated. also in this case, we assume $value is not
// nested beyond 2 levels (ie, array(0 => array(0 => 1, 1 => 2)), but not array(
// 0 => array(0 => array(), 1 => array())) )
if ($this->translateColumnNames
&& is_array(reset($value))
) {
foreach ($value as $level1Key => $level1Value) {
$inner = $name == 'goals' ? Piwik::translate('Goals_GoalX', $level1Key) : $name . ' ' . $level1Key;
$columnNameTemplate = '%s (' . $inner . ')';
$this->flattenColumnArray($level1Value, $csvRow, $columnNameTemplate);
}
} else {
$this->flattenColumnArray($value, $csvRow, $csvName . '_%s');
}
} else {
$csvRow[$csvName] = $value;
}
}
return $csvRow;
}
private function getCsvColumnName($name)
{
if ($this->translateColumnNames) {
return $this->translateColumnName($name);
} else {
return $name;
}
}
/**
* @param $allColumns
* @param $csv
* @return array
*/
private function buildCsvString($allColumns, $csv)
{
$str = '';
// specific case, we have only one column and this column wasn't named properly (indexed by a number)
// we don't print anything in the CSV file => an empty line
if (sizeof($allColumns) == 1
&& reset($allColumns)
&& !is_string(key($allColumns))
) {
$str .= '';
} else {
// render row names
$str .= $this->getHeaderLine(array_keys($allColumns)) . $this->lineEnd;
}
// we render the CSV
foreach ($csv as $theRow) {
$rowStr = '';
foreach ($allColumns as $columnName => $true) {
$rowStr .= $this->formatValue($theRow[$columnName]) . $this->separator;
}
// remove the last separator
$rowStr = substr_replace($rowStr, "", -strlen($this->separator));
$str .= $rowStr . $this->lineEnd;
}
$str = substr($str, 0, -strlen($this->lineEnd));
return $str;
}
/**
* @param $table
* @param $allColumns
* @return array of csv data
*/
private function makeArrayFromDataTable($table, &$allColumns)
{
$csv = array();
foreach ($table->getRows() as $row) {
$csvRow = $this->flattenColumnArray($row->getColumns());
if ($this->exportMetadata) {
$metadata = $row->getMetadata();
foreach ($metadata as $name => $value) {
if ($name == 'idsubdatatable_in_db') {
continue;
}
//if a metadata and a column have the same name make sure they don't overwrite
if ($this->translateColumnNames) {
$name = Piwik::translate('General_Metadata') . ': ' . $name;
} else {
$name = 'metadata_' . $name;
}
if (is_array($value)
|| is_object($value)
) {
if (!in_array($name, $this->unsupportedColumns)) {
$this->unsupportedColumns[] = $name;
}
} else {
$csvRow[$name] = $value;
}
}
}
foreach ($csvRow as $name => $value) {
if (in_array($name, $this->unsupportedColumns)) {
unset($allColumns[$name]);
} else {
$allColumns[$name] = true;
}
}
if ($this->exportIdSubtable) {
$idsubdatatable = $row->getIdSubDataTable();
if ($idsubdatatable !== false
&& $this->hideIdSubDatatable === false
) {
$csvRow['idsubdatatable'] = $idsubdatatable;
}
}
$csv[] = $csvRow;
}
if (!empty($this->unsupportedColumns)) {
foreach ($this->unsupportedColumns as $unsupportedColumn) {
foreach ($csv as $index => $row) {
unset($row[$index][$unsupportedColumn]);
}
}
}
return $csv;
}
/**
* @param $str
* @return string
*/
private function convertToUnicode($str)
{
if ($this->convertToUnicode
&& function_exists('mb_convert_encoding')
) {
$str = chr(255) . chr(254) . mb_convert_encoding($str, 'UTF-16LE', 'UTF-8');
}
return $str;
}
/**
* @param $value
* @return mixed
*/
protected function removeFirstPercentSign($value)
{
$needle = '%';
$posPercent = strpos($value, $needle);
if ($posPercent !== false) {
return substr_replace($value, '', $posPercent, strlen($needle));
}
return $value;
}
}
|