1 files changed, 94 insertions, 0 deletions
diff --git a/Html/includes/BEncode.php b/Html/includes/BEncode.php
new file mode 100644
index 0000000..b0876e7
--- /dev/null
+++ b/Html/includes/BEncode.php
@@ -0,0 +1,94 @@
+<?php
+
+// Woohoo! Who needs mhash or PHP 4.3?
+// Don't require it. Still recommended, but not mandatory.
+if (!function_exists('sha1'))
+	@include_once('sha1lib.php');
+
+// We'll protect the namespace of our code
+// using a class
+class BEncode {
+	// Dictionary keys must be sorted. foreach tends to iterate over the order
+	// the array was made, so we make a new one in sorted order. :)
+	function makeSorted($array) {
+		// Shouldn't happen!
+		if (empty($array))
+			return $array;
+		$i = 0;
+		foreach($array as $key => $dummy)
+			$keys[$i++] = stripslashes($key);
+		sort($keys);
+		for ($i=0; isset($keys[$i]); $i++)
+			$return[addslashes($keys[$i])] = $array[addslashes($keys[$i])];
+		return $return;
+	}
+
+	// Encodes strings, integers and empty dictionaries.
+	// $unstrip is set to true when decoding dictionary keys
+	function encodeEntry($entry, &$fd, $unstrip = false) {
+		if (is_bool($entry)) {
+			$fd .= 'de';
+			return;
+		}
+		if (is_int($entry) || is_float($entry)) {
+			$fd .= 'i'.$entry.'e';
+			return;
+		}
+		if ($unstrip)
+			$myentry = stripslashes($entry);
+		else
+			$myentry = $entry;
+		$length = strlen($myentry);
+		$fd .= $length.':'.$myentry;
+	}
+
+	// Encodes lists
+	function encodeList($array, &$fd) {
+		$fd .= 'l';
+		// The empty list is defined as array();
+		if (empty($array)) {
+			$fd .= 'e';
+			return;
+		}
+		for ($i = 0; isset($array[$i]); $i++)
+			$this->decideEncode($array[$i], $fd);
+		$fd .= 'e';
+	}
+
+	// Passes lists and dictionaries accordingly, and has encodeEntry handle
+	// the strings and integers.
+	function decideEncode($unknown, &$fd) {
+		if (is_array($unknown)) {
+			if (isset($unknown[0]) || empty($unknown))
+				return $this->encodeList($unknown, $fd);
+			else
+				return $this->encodeDict($unknown, $fd);
+		}
+		$this->encodeEntry($unknown, $fd);
+	}
+
+	// Encodes dictionaries
+	function encodeDict($array, &$fd) {
+		$fd .= 'd';
+		if (is_bool($array)) {
+			$fd .= 'e';
+			return;
+		}
+		// NEED TO SORT!
+		$newarray = $this->makeSorted($array);
+		foreach($newarray as $left => $right) {
+			$this->encodeEntry($left, $fd, true);
+			$this->decideEncode($right, $fd);
+		}
+		$fd .= 'e';
+	}
+} // End of class declaration.
+
+// Use this function in your own code.
+function BEncode($array) {
+	$string = '';
+	$encoder = new BEncode;
+	$encoder->decideEncode($array, $string);
+	return $string;
+}
+?>
+\ No newline at end of file