Update Writer folder structure to match Reader new structure

src/Spout/Writer/CSV/Writer.php

@@ -0,0 +1,102 @@
+<?php
+
+namespace Box\Spout\Writer\CSV;
+
+use Box\Spout\Writer\AbstractWriter;
+use Box\Spout\Common\Exception\IOException;
+
+/**
+ * Class Writer
+ * This class provides support to write data to CSV files
+ *
+ * @package Box\Spout\Writer\CSV
+ */
+class Writer extends AbstractWriter
+{
+    /** Number of rows to write before flushing */
+    const FLUSH_THRESHOLD = 500;
+    const UTF8_BOM = "\xEF\xBB\xBF";
+
+    /** @var string Content-Type value for the header */
+    protected static $headerContentType = 'text/csv; charset=UTF-8';
+
+    /** @var string Defines the character used to delimit fields (one character only) */
+    protected $fieldDelimiter = ',';
+
+    /** @var string Defines the character used to enclose fields (one character only) */
+    protected $fieldEnclosure = '"';
+
+    /** @var int */
+    protected $lastWrittenRowIndex = 0;
+
+    /**
+     * Sets the field delimiter for the CSV
+     *
+     * @param string $fieldDelimiter Character that delimits fields
+     * @return Writer
+     */
+    public function setFieldDelimiter($fieldDelimiter)
+    {
+        $this->fieldDelimiter = $fieldDelimiter;
+        return $this;
+    }
+
+    /**
+     * Sets the field enclosure for the CSV
+     *
+     * @param string $fieldEnclosure Character that enclose fields
+     * @return Writer
+     */
+    public function setFieldEnclosure($fieldEnclosure)
+    {
+        $this->fieldEnclosure = $fieldEnclosure;
+        return $this;
+    }
+
+    /**
+     * Opens the CSV streamer and makes it ready to accept data.
+     *
+     * @return void
+     */
+    protected function openWriter()
+    {
+        // Adds UTF-8 BOM for Unicode compatibility
+        $this->globalFunctionsHelper->fputs($this->filePointer, self::UTF8_BOM);
+    }
+
+    /**
+     * Adds data to the currently opened writer.
+     *
+     * @param  array $dataRow Array containing data to be written.
+     *          Example $dataRow = ['data1', 1234, null, '', 'data5'];
+     * @return void
+     * @throws \Box\Spout\Common\Exception\IOException If unable to write data
+     */
+    protected function addRowToWriter(array $dataRow)
+    {
+        $wasWriteSuccessful = $this->globalFunctionsHelper->fputcsv($this->filePointer, $dataRow, $this->fieldDelimiter, $this->fieldEnclosure);
+        if ($wasWriteSuccessful === false) {
+            throw new IOException('Unable to write data');
+        }
+
+        $this->lastWrittenRowIndex++;
+        if ($this->lastWrittenRowIndex % self::FLUSH_THRESHOLD === 0) {
+            $this->globalFunctionsHelper->fflush($this->filePointer);
+        }
+    }
+
+    /**
+     * Closes the CSV streamer, preventing any additional writing.
+     * If set, sets the headers and redirects output to the browser.
+     *
+     * @return void
+     */
+    protected function closeWriter()
+    {
+        if ($this->filePointer) {
+            $this->globalFunctionsHelper->fclose($this->filePointer);
+        }
+
+        $this->lastWrittenRowIndex = 0;
+    }
+}