czy-avue-form-design
Version:
Vue3.0版本，因Avue还存在一些bug，请慎重使用。
188 lines (180 loc) • 6.03 kB
JavaScript
/* 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
);