From 07f5140771388c9e0c8a99b0dd2e5d950bdb173b Mon Sep 17 00:00:00 2001
From: Yuchen Pei <hi@ypei.me>
Date: Thu, 14 Oct 2021 15:16:42 +1100
Subject: moving h-source subdir out.

---
 .../Mime/ContentEncoder/PlainContentEncoder.php    | 175 +++++++++++++++++++++
 1 file changed, 175 insertions(+)
 create mode 100755 External/swiftmailer/lib/classes/Swift/Mime/ContentEncoder/PlainContentEncoder.php

(limited to 'External/swiftmailer/lib/classes/Swift/Mime/ContentEncoder/PlainContentEncoder.php')

diff --git a/External/swiftmailer/lib/classes/Swift/Mime/ContentEncoder/PlainContentEncoder.php b/External/swiftmailer/lib/classes/Swift/Mime/ContentEncoder/PlainContentEncoder.php
new file mode 100755
index 0000000..4a725d8
--- /dev/null
+++ b/External/swiftmailer/lib/classes/Swift/Mime/ContentEncoder/PlainContentEncoder.php
@@ -0,0 +1,175 @@
+<?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.
+ */
+
+//@require 'Swift/Mime/ContentEncoder.php';
+//@require 'Swift/InputByteStream.php';
+//@require 'Swift/OutputByteStream.php';
+
+/**
+ * Handles binary/7/8-bit Transfer Encoding in Swift Mailer.
+ * @package Swift
+ * @subpackage Mime
+ * @author Chris Corbyn
+ */
+class Swift_Mime_ContentEncoder_PlainContentEncoder
+  implements Swift_Mime_ContentEncoder
+{
+  
+  /**
+   * The name of this encoding scheme (probably 7bit or 8bit).
+   * @var string
+   * @access private
+   */
+  private $_name;
+  
+  /**
+   * True if canonical transformations should be done.
+   * @var boolean
+   * @access private
+   */
+  private $_canonical;
+  
+  /**
+   * Creates a new PlainContentEncoder with $name (probably 7bit or 8bit).
+   * @param string $name
+   * @param boolean $canonical If canonicalization transformation should be done.
+   */
+  public function __construct($name, $canonical = false)
+  {
+    $this->_name = $name;
+    $this->_canonical = $canonical;
+  }
+  
+  /**
+   * Encode a given string to produce an encoded string.
+   * @param string $string
+   * @param int $firstLineOffset, ignored
+   * @param int $maxLineLength - 0 means no wrapping will occur
+   * @return string
+   */
+  public function encodeString($string, $firstLineOffset = 0,
+    $maxLineLength = 0)
+  {
+    if ($this->_canonical)
+    {
+      $string = $this->_canonicalize($string);
+    }
+    return $this->_safeWordWrap($string, $maxLineLength, "\r\n");
+  }
+  
+  /**
+   * Encode stream $in to stream $out.
+   * @param Swift_OutputByteStream $in
+   * @param Swift_InputByteStream $out
+   * @param int $firstLineOffset, ignored
+   * @param int $maxLineLength, optional, 0 means no wrapping will occur
+   */
+  public function encodeByteStream(
+    Swift_OutputByteStream $os, Swift_InputByteStream $is, $firstLineOffset = 0,
+    $maxLineLength = 0)
+  {
+    $leftOver = '';
+    while (false !== $bytes = $os->read(8192))
+    {
+      $toencode = $leftOver . $bytes;
+      if ($this->_canonical)
+      {
+        $toencode = $this->_canonicalize($toencode);
+      }
+      $wrapped = $this->_safeWordWrap($toencode, $maxLineLength, "\r\n");
+      $lastLinePos = strrpos($wrapped, "\r\n");
+      $leftOver = substr($wrapped, $lastLinePos);
+      $wrapped = substr($wrapped, 0, $lastLinePos);
+      
+      $is->write($wrapped);
+    }
+    if (strlen($leftOver))
+    {
+      $is->write($leftOver);
+    }
+  }
+  
+  /**
+   * Get the name of this encoding scheme.
+   * @return string
+   */
+  public function getName()
+  {
+    return $this->_name;
+  }
+  
+  /**
+   * Not used.
+   */
+  public function charsetChanged($charset)
+  {
+  }
+  
+  // -- Private methods
+  
+  /**
+   * A safer (but weaker) wordwrap for unicode.
+   * @param string $string
+   * @param int $length
+   * @param string $le
+   * @return string
+   * @access private
+   */
+  private function _safeWordwrap($string, $length = 75, $le = "\r\n")
+  {
+    if (0 >= $length)
+    {
+      return $string;
+    }
+    
+    $originalLines = explode($le, $string);
+    
+    $lines = array();
+    $lineCount = 0;
+    
+    foreach ($originalLines as $originalLine)
+    {
+      $lines[] = '';
+      $currentLine =& $lines[$lineCount++];
+      
+      //$chunks = preg_split('/(?<=[\ \t,\.!\?\-&\+\/])/', $originalLine);
+      $chunks = preg_split('/(?<=\s)/', $originalLine);
+      
+      foreach ($chunks as $chunk)
+      {
+        if (0 != strlen($currentLine)
+          && strlen($currentLine . $chunk) > $length)
+        {
+          $lines[] = '';
+          $currentLine =& $lines[$lineCount++];
+        }
+        $currentLine .= $chunk;
+      }
+    }
+    
+    return implode("\r\n", $lines);
+  }
+  
+  /**
+   * Canonicalize string input (fix CRLF).
+   * @param string $string
+   * @return string
+   * @access private
+   */
+  private function _canonicalize($string)
+  {
+    return str_replace(
+      array("\r\n", "\r", "\n"),
+      array("\n", "\n", "\r\n"),
+      $string
+      );
+  }
+  
+}
-- 
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