add Blob.js separate from filesaver.js

Blob.js version 2013-12-27 / 0055d054acbca43eff44fc25c891055440685d9c
Refs #12196

Gruntfile.js

@@ -134,6 +134,7 @@ module.exports = function (grunt) {
           'docs/assets/js/less.min.js',
           'docs/assets/js/jszip.js',
           'docs/assets/js/uglify.js',
+          'docs/assets/js/blob.js',
           'docs/assets/js/filesaver.js',
           'docs/assets/js/raw-files.js',
           'docs/assets/js/customizer.js'

docs/assets/js/blob.js

+/* Blob.js
+ * A Blob implementation.
+ * 2013-12-27
+ * 
+ * By Eli Grey, http://eligrey.com
+ * By Devin Samarin, https://github.com/eboyjr
+ * License: X11/MIT
+ *   See LICENSE.md
+ */
+
+/*global self, unescape */
+/*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true,
+  plusplus: true */
+
+/*! @source http://purl.eligrey.com/github/Blob.js/blob/master/Blob.js */
+
+if (!(typeof Blob === "function" || typeof Blob === "object") || typeof URL === "undefined")
+if ((typeof Blob === "function" || typeof Blob === "object") && typeof webkitURL !== "undefined") self.URL = webkitURL;
+else var Blob = (function (view) {
+	"use strict";
+
+	var BlobBuilder = view.BlobBuilder || view.WebKitBlobBuilder || view.MozBlobBuilder || view.MSBlobBuilder || (function(view) {
+		var
+			  get_class = function(object) {
+				return Object.prototype.toString.call(object).match(/^\[object\s(.*)\]$/)[1];
+			}
+			, FakeBlobBuilder = function BlobBuilder() {
+				this.data = [];
+			}
+			, FakeBlob = function Blob(data, type, encoding) {
+				this.data = data;
+				this.size = data.length;
+				this.type = type;
+				this.encoding = encoding;
+			}
+			, FBB_proto = FakeBlobBuilder.prototype
+			, FB_proto = FakeBlob.prototype
+			, FileReaderSync = view.FileReaderSync
+			, FileException = function(type) {
+				this.code = this[this.name = type];
+			}
+			, file_ex_codes = (
+				  "NOT_FOUND_ERR SECURITY_ERR ABORT_ERR NOT_READABLE_ERR ENCODING_ERR "
+				+ "NO_MODIFICATION_ALLOWED_ERR INVALID_STATE_ERR SYNTAX_ERR"
+			).split(" ")
+			, file_ex_code = file_ex_codes.length
+			, real_URL = view.URL || view.webkitURL || view
+			, real_create_object_URL = real_URL.createObjectURL
+			, real_revoke_object_URL = real_URL.revokeObjectURL
+			, URL = real_URL
+			, btoa = view.btoa
+			, atob = view.atob
+			
+			, ArrayBuffer = view.ArrayBuffer
+			, Uint8Array = view.Uint8Array
+		;
+		FakeBlob.fake = FB_proto.fake = true;
+		while (file_ex_code--) {
+			FileException.prototype[file_ex_codes[file_ex_code]] = file_ex_code + 1;
+		}
+		if (!real_URL.createObjectURL) {
+			URL = view.URL = {};
+		}
+		URL.createObjectURL = function(blob) {
+			var
+				  type = blob.type
+				, data_URI_header
+			;
+			if (type === null) {
+				type = "application/octet-stream";
+			}
+			if (blob instanceof FakeBlob) {
+				data_URI_header = "data:" + type;
+				if (blob.encoding === "base64") {
+					return data_URI_header + ";base64," + blob.data;
+				} else if (blob.encoding === "URI") {
+					return data_URI_header + "," + decodeURIComponent(blob.data);
+				} if (btoa) {
+					return data_URI_header + ";base64," + btoa(blob.data);
+				} else {
+					return data_URI_header + "," + encodeURIComponent(blob.data);
+				}
+			} else if (real_create_object_URL) {
+				return real_create_object_URL.call(real_URL, blob);
+			}
+		};
+		URL.revokeObjectURL = function(object_URL) {
+			if (object_URL.substring(0, 5) !== "data:" && real_revoke_object_URL) {
+				real_revoke_object_URL.call(real_URL, object_URL);
+			}
+		};
+		FBB_proto.append = function(data/*, endings*/) {
+			var bb = this.data;
+			// decode data to a binary string
+			if (Uint8Array && (data instanceof ArrayBuffer || data instanceof Uint8Array)) {
+				var
+					  str = ""
+					, buf = new Uint8Array(data)
+					, i = 0
+					, buf_len = buf.length
+				;
+				for (; i < buf_len; i++) {
+					str += String.fromCharCode(buf[i]);
+				}
+				bb.push(str);
+			} else if (get_class(data) === "Blob" || get_class(data) === "File") {
+				if (FileReaderSync) {
+					var fr = new FileReaderSync;
+					bb.push(fr.readAsBinaryString(data));
+				} else {
+					// async FileReader won't work as BlobBuilder is sync
+					throw new FileException("NOT_READABLE_ERR");
+				}
+			} else if (data instanceof FakeBlob) {
+				if (data.encoding === "base64" && atob) {
+					bb.push(atob(data.data));
+				} else if (data.encoding === "URI") {
+					bb.push(decodeURIComponent(data.data));
+				} else if (data.encoding === "raw") {
+					bb.push(data.data);
+				}
+			} else {
+				if (typeof data !== "string") {
+					data += ""; // convert unsupported types to strings
+				}
+				// decode UTF-16 to binary string
+				bb.push(unescape(encodeURIComponent(data)));
+			}
+		};
+		FBB_proto.getBlob = function(type) {
+			if (!arguments.length) {
+				type = null;
+			}
+			return new FakeBlob(this.data.join(""), type, "raw");
+		};
+		FBB_proto.toString = function() {
+			return "[object BlobBuilder]";
+		};
+		FB_proto.slice = function(start, end, type) {
+			var args = arguments.length;
+			if (args < 3) {
+				type = null;
+			}
+			return new FakeBlob(
+				  this.data.slice(start, args > 1 ? end : this.data.length)
+				, type
+				, this.encoding
+			);
+		};
+		FB_proto.toString = function() {
+			return "[object Blob]";
+		};
+		return FakeBlobBuilder;
+	}(view));
+
+	return function Blob(blobParts, options) {
+		var type = options ? (options.type || "") : "";
+		var builder = new BlobBuilder();
+		if (blobParts) {
+			for (var i = 0, len = blobParts.length; i < len; i++) {
+				builder.append(blobParts[i]);
+			}
+		}
+		return builder.getBlob(type);
+	};
+}(typeof self !== "undefined" && self || typeof window !== "undefined" && window || this.content || this));