1 files changed, 181 insertions, 0 deletions
diff --git a/vendor/swiftmailer/swiftmailer/lib/classes/Swift/ByteStream/AbstractFilterableInputStream.php b/vendor/swiftmailer/swiftmailer/lib/classes/Swift/ByteStream/AbstractFilterableInputStream.php
new file mode 100644
index 0000000..a7b0e3a
--- /dev/null
+++ b/vendor/swiftmailer/swiftmailer/lib/classes/Swift/ByteStream/AbstractFilterableInputStream.php
@@ -0,0 +1,181 @@
+<?php
+
+/*
+ * This file is part of SwiftMailer.
+ * (c) 2004-2009 Chris Corbyn
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Provides the base functionality for an InputStream supporting filters.
+ *
+ * @author Chris Corbyn
+ */
+abstract class Swift_ByteStream_AbstractFilterableInputStream implements Swift_InputByteStream, Swift_Filterable
+{
+    /**
+     * Write sequence.
+     */
+    protected $_sequence = 0;
+
+    /**
+     * StreamFilters.
+     *
+     * @var Swift_StreamFilter[]
+     */
+    private $_filters = array();
+
+    /**
+     * A buffer for writing.
+     */
+    private $_writeBuffer = '';
+
+    /**
+     * Bound streams.
+     *
+     * @var Swift_InputByteStream[]
+     */
+    private $_mirrors = array();
+
+    /**
+     * Commit the given bytes to the storage medium immediately.
+     *
+     * @param string $bytes
+     */
+    abstract protected function _commit($bytes);
+
+    /**
+     * Flush any buffers/content with immediate effect.
+     */
+    abstract protected function _flush();
+
+    /**
+     * Add a StreamFilter to this InputByteStream.
+     *
+     * @param Swift_StreamFilter $filter
+     * @param string             $key
+     */
+    public function addFilter(Swift_StreamFilter $filter, $key)
+    {
+        $this->_filters[$key] = $filter;
+    }
+
+    /**
+     * Remove an already present StreamFilter based on its $key.
+     *
+     * @param string $key
+     */
+    public function removeFilter($key)
+    {
+        unset($this->_filters[$key]);
+    }
+
+    /**
+     * Writes $bytes to the end of the stream.
+     *
+     * @param string $bytes
+     *
+     * @throws Swift_IoException
+     *
+     * @return int
+     */
+    public function write($bytes)
+    {
+        $this->_writeBuffer .= $bytes;
+        foreach ($this->_filters as $filter) {
+            if ($filter->shouldBuffer($this->_writeBuffer)) {
+                return;
+            }
+        }
+        $this->_doWrite($this->_writeBuffer);
+
+        return ++$this->_sequence;
+    }
+
+    /**
+     * For any bytes that are currently buffered inside the stream, force them
+     * off the buffer.
+     *
+     * @throws Swift_IoException
+     */
+    public function commit()
+    {
+        $this->_doWrite($this->_writeBuffer);
+    }
+
+    /**
+     * Attach $is to this stream.
+     *
+     * The stream acts as an observer, receiving all data that is written.
+     * All {@link write()} and {@link flushBuffers()} operations will be mirrored.
+     *
+     * @param Swift_InputByteStream $is
+     */
+    public function bind(Swift_InputByteStream $is)
+    {
+        $this->_mirrors[] = $is;
+    }
+
+    /**
+     * Remove an already bound stream.
+     *
+     * If $is is not bound, no errors will be raised.
+     * If the stream currently has any buffered data it will be written to $is
+     * before unbinding occurs.
+     *
+     * @param Swift_InputByteStream $is
+     */
+    public function unbind(Swift_InputByteStream $is)
+    {
+        foreach ($this->_mirrors as $k => $stream) {
+            if ($is === $stream) {
+                if ($this->_writeBuffer !== '') {
+                    $stream->write($this->_writeBuffer);
+                }
+                unset($this->_mirrors[$k]);
+            }
+        }
+    }
+
+    /**
+     * Flush the contents of the stream (empty it) and set the internal pointer
+     * to the beginning.
+     *
+     * @throws Swift_IoException
+     */
+    public function flushBuffers()
+    {
+        if ($this->_writeBuffer !== '') {
+            $this->_doWrite($this->_writeBuffer);
+        }
+        $this->_flush();
+
+        foreach ($this->_mirrors as $stream) {
+            $stream->flushBuffers();
+        }
+    }
+
+    /** Run $bytes through all filters */
+    private function _filter($bytes)
+    {
+        foreach ($this->_filters as $filter) {
+            $bytes = $filter->filter($bytes);
+        }
+
+        return $bytes;
+    }
+
+    /** Just write the bytes to the stream */
+    private function _doWrite($bytes)
+    {
+        $this->_commit($this->_filter($bytes));
+
+        foreach ($this->_mirrors as $stream) {
+            $stream->write($bytes);
+        }
+
+        $this->_writeBuffer = '';
+    }
+}