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BetterExcel.php
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BetterExcel.php
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<?php
namespace Videni\BetterExcel;
use Generator;
use Illuminate\Support\Enumerable;
use Illuminate\Support\Str;
class BetterExcel
{
/**
* @var Enumerable|Generator|array
*/
protected $data;
private $withHeader = true;
private $header = [];
private $options = [];
private $rowIndex = 0;
/**
* @param array|Generator|Enumerable $data
* @param array $options
*/
public function __construct(array|Generator|Enumerable $data , array $options = [])
{
$this->data = $data;
$this->options = $options;
}
public function export(string $filename, callable $callback = null)
{
$writer = $this->createWriter($filename, $this->options);
if ($this->withHeader) {
$this->writeHeader($writer, $this->getHeader());
}
$this->writeRows($writer, $this->data, $callback);
return $writer->saveToFile($filename);
}
protected function createWriter($filename, $options = [])
{
if (Str::endsWith($filename, ['xls', 'xlsx'])) {
return new XlsWriter($filename, $options);
}
throw new \Exception('Currently only support Excel export');
}
public function setHeader(array $columns)
{
$this->header =$this->createHeader($columns);
}
protected function createHeader($columns = [])
{
$results = [];
foreach($columns as $key => $column) {
$results[] = $column instanceof Column ? $column: Column::fromArray($key, $column);
}
return $results;
}
public function withoutHeader()
{
$this->withHeader = false;
return $this;
}
public function getHeader(): array
{
return $this->header;
}
public function setOptions($options = [])
{
$this->options = $options;
return $this;
}
/**
* @param $writer
* @param array|Generator|Enumerable $data
* @param callable|null $callback
* @return void
*/
protected function writeRows($writer, array|Generator|Enumerable $data, ?callable $callback = null)
{
$rowIndex = $this->rowIndex;
if ($this->withHeader && count($this->header) > 0) {
$rowIndex = $rowIndex + 1;
}
foreach($data as $row) {
if ($callback) {
$row = $callback($writer, $row, $rowIndex, $this->header);
}
// Allow to render the row by itself
if (is_object($row) && method_exists($row, 'render')) {
$row = $row->render($writer, $rowIndex, $this->header);
}
$oneRow = $this->transformRow($row, $rowIndex);
$writer->writeOneRow($oneRow);
$rowIndex++;
}
$this->rowIndex = $rowIndex;
}
protected function writeHeader($writer, $headers = [])
{
$writer->writeHeader($headers);
}
protected function transformRow($row, $rowIndex)
{
$columns = $this->getHeader();
$data = [];
foreach($columns as $columnIndex => $column) {
$value = $column->getUnresolvedValue($row);
if ($resolver = $column->getResolver()) {
$value = $resolver($value, $row);
}
$data[] = CellInfo::create($value, $columnIndex, $rowIndex, $column->getStyle(), $column->getLetter());
}
return $data;
}
}