103 lines
2.9 KiB
PHP
103 lines
2.9 KiB
PHP
<?php
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namespace Box\Spout\Writer\CSV;
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use Box\Spout\Writer\AbstractWriter;
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use Box\Spout\Common\Exception\IOException;
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/**
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* Class Writer
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* This class provides support to write data to CSV files
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*
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* @package Box\Spout\Writer\CSV
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*/
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class Writer extends AbstractWriter
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{
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/** Number of rows to write before flushing */
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const FLUSH_THRESHOLD = 500;
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const BOM_UTF8 = "\xEF\xBB\xBF";
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/** @var string Content-Type value for the header */
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protected static $headerContentType = 'text/csv; charset=UTF-8';
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/** @var string Defines the character used to delimit fields (one character only) */
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protected $fieldDelimiter = ',';
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/** @var string Defines the character used to enclose fields (one character only) */
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protected $fieldEnclosure = '"';
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/** @var int */
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protected $lastWrittenRowIndex = 0;
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/**
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* Sets the field delimiter for the CSV
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*
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* @param string $fieldDelimiter Character that delimits fields
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* @return Writer
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*/
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public function setFieldDelimiter($fieldDelimiter)
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{
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$this->fieldDelimiter = $fieldDelimiter;
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return $this;
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}
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/**
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* Sets the field enclosure for the CSV
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*
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* @param string $fieldEnclosure Character that enclose fields
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* @return Writer
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*/
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public function setFieldEnclosure($fieldEnclosure)
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{
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$this->fieldEnclosure = $fieldEnclosure;
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return $this;
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}
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/**
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* Opens the CSV streamer and makes it ready to accept data.
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*
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* @return void
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*/
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protected function openWriter()
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{
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// Adds UTF-8 BOM for Unicode compatibility
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$this->globalFunctionsHelper->fputs($this->filePointer, self::BOM_UTF8);
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}
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/**
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* Adds data to the currently opened writer.
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*
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* @param array $dataRow Array containing data to be written.
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* Example $dataRow = ['data1', 1234, null, '', 'data5'];
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* @return void
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* @throws \Box\Spout\Common\Exception\IOException If unable to write data
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*/
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protected function addRowToWriter(array $dataRow)
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{
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$wasWriteSuccessful = $this->globalFunctionsHelper->fputcsv($this->filePointer, $dataRow, $this->fieldDelimiter, $this->fieldEnclosure);
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if ($wasWriteSuccessful === false) {
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throw new IOException('Unable to write data');
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}
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$this->lastWrittenRowIndex++;
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if ($this->lastWrittenRowIndex % self::FLUSH_THRESHOLD === 0) {
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$this->globalFunctionsHelper->fflush($this->filePointer);
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}
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}
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/**
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* Closes the CSV streamer, preventing any additional writing.
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* If set, sets the headers and redirects output to the browser.
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*
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* @return void
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*/
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protected function closeWriter()
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{
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if ($this->filePointer) {
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$this->globalFunctionsHelper->fclose($this->filePointer);
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}
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$this->lastWrittenRowIndex = 0;
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}
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}
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