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include/swiftmailer/lib/classes/Swift/Mime/HeaderEncoder/Base64HeaderEncoder.php

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+<?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.
+ */
+
+/**
+ * Handles Base64 (B) Header Encoding in Swift Mailer.
+ *
+ * @author Chris Corbyn
+ */
+class Swift_Mime_HeaderEncoder_Base64HeaderEncoder extends Swift_Encoder_Base64Encoder implements Swift_Mime_HeaderEncoder
+{
+    /**
+     * Get the name of this encoding scheme.
+     * Returns the string 'B'.
+     *
+     * @return string
+     */
+    public function getName()
+    {
+        return 'B';
+    }
+
+    /**
+     * Takes an unencoded string and produces a Base64 encoded string from it.
+     *
+     * If the charset is iso-2022-jp, it uses mb_encode_mimeheader instead of
+     * default encodeString, otherwise pass to the parent method.
+     *
+     * @param string $string          string to encode
+     * @param int    $firstLineOffset
+     * @param int    $maxLineLength   optional, 0 indicates the default of 76 bytes
+     * @param string $charset
+     *
+     * @return string
+     */
+    public function encodeString($string, $firstLineOffset = 0, $maxLineLength = 0, $charset = 'utf-8')
+    {
+        if ('iso-2022-jp' === strtolower($charset)) {
+            $old = mb_internal_encoding();
+            mb_internal_encoding('utf-8');
+            $newstring = mb_encode_mimeheader($string, $charset, $this->getName(), "\r\n");
+            mb_internal_encoding($old);
+
+            return $newstring;
+        }
+
+        return parent::encodeString($string, $firstLineOffset, $maxLineLength);
+    }
+}

include/swiftmailer/lib/classes/Swift/Mime/HeaderEncoder/QpHeaderEncoder.php

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+<?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.
+ */
+
+/**
+ * Handles Quoted Printable (Q) Header Encoding in Swift Mailer.
+ *
+ * @author Chris Corbyn
+ */
+class Swift_Mime_HeaderEncoder_QpHeaderEncoder extends Swift_Encoder_QpEncoder implements Swift_Mime_HeaderEncoder
+{
+    /**
+     * Creates a new QpHeaderEncoder for the given CharacterStream.
+     *
+     * @param Swift_CharacterStream $charStream to use for reading characters
+     */
+    public function __construct(Swift_CharacterStream $charStream)
+    {
+        parent::__construct($charStream);
+    }
+
+    protected function initSafeMap()
+    {
+        foreach (array_merge(
+            range(0x61, 0x7A), range(0x41, 0x5A),
+            range(0x30, 0x39), [0x20, 0x21, 0x2A, 0x2B, 0x2D, 0x2F]
+        ) as $byte) {
+            $this->safeMap[$byte] = \chr($byte);
+        }
+    }
+
+    /**
+     * Get the name of this encoding scheme.
+     *
+     * Returns the string 'Q'.
+     *
+     * @return string
+     */
+    public function getName()
+    {
+        return 'Q';
+    }
+
+    /**
+     * Takes an unencoded string and produces a QP encoded string from it.
+     *
+     * @param string $string          string to encode
+     * @param int    $firstLineOffset optional
+     * @param int    $maxLineLength   optional, 0 indicates the default of 76 chars
+     *
+     * @return string
+     */
+    public function encodeString($string, $firstLineOffset = 0, $maxLineLength = 0)
+    {
+        return str_replace([' ', '=20', "=\r\n"], ['_', '_', "\r\n"],
+            parent::encodeString($string, $firstLineOffset, $maxLineLength)
+        );
+    }
+}