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authorroot <root@migration.vz.lan>2012-10-23 09:04:43 +0000
committerroot <root@migration.vz.lan>2012-10-23 09:04:43 +0000
commit074dc8fda6f634cc8c024a913d8033600b336b3a (patch)
tree1a9959d61e9f308b0a3443d9d67c00d26421581c /views/default/js/b64.js.php
downloadelgg-074dc8fda6f634cc8c024a913d8033600b336b3a.tar.gz
elgg-074dc8fda6f634cc8c024a913d8033600b336b3a.tar.bz2
initial commit.
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diff --git a/views/default/js/b64.js.php b/views/default/js/b64.js.php
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+// This code was written by Tyler Akins and has been placed in the
+// public domain. It would be nice if you left this header intact.
+// Base64 code from Tyler Akins -- http://rumkin.com
+
+var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
+
+/**
+ * Encodes a string in base64
+ * @param {String} input The string to encode in base64.
+ */
+function encode64(input) {
+ var output = "";
+ var chr1, chr2, chr3;
+ var enc1, enc2, enc3, enc4;
+ var i = 0;
+
+ do {
+ chr1 = input.charCodeAt(i++);
+ chr2 = input.charCodeAt(i++);
+ chr3 = input.charCodeAt(i++);
+
+ enc1 = chr1 >> 2;
+ enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
+ enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
+ enc4 = chr3 & 63;
+
+ if (isNaN(chr2)) {
+ enc3 = enc4 = 64;
+ } else if (isNaN(chr3)) {
+ enc4 = 64;
+ }
+
+ output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2) +
+ keyStr.charAt(enc3) + keyStr.charAt(enc4);
+ } while (i < input.length);
+
+ return output;
+}
+
+/**
+ * Decodes a base64 string.
+ * @param {String} input The string to decode.
+ */
+function decode64(input) {
+ var output = "";
+ var chr1, chr2, chr3;
+ var enc1, enc2, enc3, enc4;
+ var i = 0;
+
+ // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
+ input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
+
+ do {
+ enc1 = keyStr.indexOf(input.charAt(i++));
+ enc2 = keyStr.indexOf(input.charAt(i++));
+ enc3 = keyStr.indexOf(input.charAt(i++));
+ enc4 = keyStr.indexOf(input.charAt(i++));
+
+ chr1 = (enc1 << 2) | (enc2 >> 4);
+ chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
+ chr3 = ((enc3 & 3) << 6) | enc4;
+
+ output = output + String.fromCharCode(chr1);
+
+ if (enc3 != 64) {
+ output = output + String.fromCharCode(chr2);
+ }
+ if (enc4 != 64) {
+ output = output + String.fromCharCode(chr3);
+ }
+ } while (i < input.length);
+
+ return output;
+}