/* eslint-disable */
/*  Blob.js
 * A Blob implementation.
 * 2014-05-27
 *
 * 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 */

;
(function(view) {
    'use strict'

    view.URL = view.URL || view.webkitURL

    if (view.Blob && view.URL) {
        try {
            new Blob()
            return
        } catch (e) {}
    }

    // Internally we use a BlobBuilder implementation to base Blob off of
    // in order to support older browsers that only have BlobBuilder
    var BlobBuilder =
        view.BlobBuilder ||
        view.WebKitBlobBuilder ||
        view.MozBlobBuilder ||
        (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]'
            }
            FB_proto.close = function() {
                this.size = this.data.length = 0
            }
            return FakeBlobBuilder
        })(view)

    view.Blob = 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,
)