1 files changed, 125 insertions, 0 deletions
diff --git a/google_appengine/google/appengine/ext/admin/templates/js/multipart_form_data.js b/google_appengine/google/appengine/ext/admin/templates/js/multipart_form_data.js
new file mode 100644
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+++ b/google_appengine/google/appengine/ext/admin/templates/js/multipart_form_data.js
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+// Copyright 2009 Google Inc.  All Rights Reserved.
+
+/**
+ * A multipart form data construction class for XHR.
+ * @see http://www.w3.org/Protocols/rfc1341/7_2_Multipart.html
+ * @constructor
+ */
+var MultipartFormData = function() {
+  /**
+   * @type {Array}
+   */
+  this.headers = [];
+
+  /**
+   * @type {Array}
+   */
+  this.parts = [];
+
+  /**
+   * A random string for the boundary.
+   * @type {string}
+   */
+  this.boundary = MultipartFormData.getRandomBoundary();
+};
+
+
+/**
+ * @type {string}
+ */
+MultipartFormData.CRLF = '\r\n';
+
+
+/**
+ * @type {string}
+ * @private
+ */
+MultipartFormData.TEN_CHARS_ =
+
+
+/**
+ * Generates a random number and some random characters from it.
+ */
+MultipartFormData.getRandomBoundary = function() {
+  var anyTenCharacters = 'DiStRIcT10';
+  var randomNumber = Math.floor(Math.random() * 10000000);
+  var nums = randomNumber.toString().split('');
+  var randomChars = '';
+  for (var i = 0, num; num = nums[i]; i++) {
+    randomChars += anyTenCharacters[num];
+  }
+  return randomChars + '-' + randomNumber;
+};
+
+
+/**
+ * @param {string} name The name for this header.
+ * @param {string} value The value for this header.
+ */
+MultipartFormData.prototype.addHeader = function(name, value) {
+  this.headers.push({
+    'name': name,
+    'value': value
+  });
+};
+
+
+/**
+ * @param {?string} name The name for this part.
+ * @param {string} value The value for this part.
+ * @param {string} opt_contentType Content-type for this part.
+ * @param {string} opt_contentDisposition Content disposition for this part.
+ * @param {string} opt_filename The filename for this part
+ */
+MultipartFormData.prototype.addPart = function(name, value, opt_contentType,
+    opt_contentDisposition, opt_filename) {
+  var contentType = opt_contentType || null;
+  var contentDisposition = opt_contentDisposition || null;
+  var filename = opt_filename || null;
+  this.parts.push({
+    'name': name,
+    'value': value,
+    'contentType': contentType,
+    'contentDisposition': contentDisposition,
+    'filename': filename
+  });
+};
+
+/**
+ * @return {string} The string to set as a payload.
+ */
+MultipartFormData.prototype.toString = function() {
+  var lines = [];
+
+  for (var i = 0, header; header = this.headers[i]; i++) {
+    lines.push(header['name'] + ': ' + header['value']);
+  }
+  if (this.headers.length > 0) {
+    lines.push('');
+  }
+
+  for (var i = 0, part; part = this.parts[i]; i++) {
+    lines.push('--' + this.boundary);
+
+    if (part['contentDisposition']) {
+      var contentDisposition = 'Content-Disposition: form-data; ';
+      contentDisposition += 'name="' + part['name'] + '"';
+      if (part['filename']) {
+        contentDisposition += '; filename="' + part['filename'] + '"';
+      }
+      lines.push(contentDisposition);
+    }
+
+    if (part['contentType']) {
+      lines.push('Content-Type: ' + part['contentType']);
+    }
+
+    lines.push('');
+    lines.push(part['value']);
+  }
+
+  lines.push('--' + this.boundary + '--');
+
+  return lines.join(MultipartFormData.CRLF) + MultipartFormData.CRLF;
+};
+