filer/dist/buffer.js

1327 lines
35 KiB
JavaScript

!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.FilerBuffer=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
* @license MIT
*/
var base64 = _dereq_('base64-js')
var ieee754 = _dereq_('ieee754')
var isArray = _dereq_('is-array')
exports.Buffer = Buffer
exports.SlowBuffer = Buffer
exports.INSPECT_MAX_BYTES = 50
Buffer.poolSize = 8192 // not used by this implementation
var kMaxLength = 0x3fffffff
/**
* If `Buffer.TYPED_ARRAY_SUPPORT`:
* === true Use Uint8Array implementation (fastest)
* === false Use Object implementation (most compatible, even IE6)
*
* Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
* Opera 11.6+, iOS 4.2+.
*
* Note:
*
* - Implementation must support adding new properties to `Uint8Array` instances.
* Firefox 4-29 lacked support, fixed in Firefox 30+.
* See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
*
* - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
*
* - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
* incorrect length in some situations.
*
* We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they will
* get the Object implementation, which is slower but will work correctly.
*/
Buffer.TYPED_ARRAY_SUPPORT = (function () {
try {
var buf = new ArrayBuffer(0)
var arr = new Uint8Array(buf)
arr.foo = function () { return 42 }
return 42 === arr.foo() && // typed array instances can be augmented
typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
new Uint8Array(1).subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
} catch (e) {
return false
}
})()
/**
* Class: Buffer
* =============
*
* The Buffer constructor returns instances of `Uint8Array` that are augmented
* with function properties for all the node `Buffer` API functions. We use
* `Uint8Array` so that square bracket notation works as expected -- it returns
* a single octet.
*
* By augmenting the instances, we can avoid modifying the `Uint8Array`
* prototype.
*/
function Buffer (subject, encoding, noZero) {
if (!(this instanceof Buffer))
return new Buffer(subject, encoding, noZero)
var type = typeof subject
// Find the length
var length
if (type === 'number')
length = subject > 0 ? subject >>> 0 : 0
else if (type === 'string') {
if (encoding === 'base64')
subject = base64clean(subject)
length = Buffer.byteLength(subject, encoding)
} else if (type === 'object' && subject !== null) { // assume object is array-like
if (subject.type === 'Buffer' && isArray(subject.data))
subject = subject.data
length = +subject.length > 0 ? Math.floor(+subject.length) : 0
} else
throw new TypeError('must start with number, buffer, array or string')
if (this.length > kMaxLength)
throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
'size: 0x' + kMaxLength.toString(16) + ' bytes')
var buf
if (Buffer.TYPED_ARRAY_SUPPORT) {
// Preferred: Return an augmented `Uint8Array` instance for best performance
buf = Buffer._augment(new Uint8Array(length))
} else {
// Fallback: Return THIS instance of Buffer (created by `new`)
buf = this
buf.length = length
buf._isBuffer = true
}
var i
if (Buffer.TYPED_ARRAY_SUPPORT && typeof subject.byteLength === 'number') {
// Speed optimization -- use set if we're copying from a typed array
buf._set(subject)
} else if (isArrayish(subject)) {
// Treat array-ish objects as a byte array
if (Buffer.isBuffer(subject)) {
for (i = 0; i < length; i++)
buf[i] = subject.readUInt8(i)
} else {
for (i = 0; i < length; i++)
buf[i] = ((subject[i] % 256) + 256) % 256
}
} else if (type === 'string') {
buf.write(subject, 0, encoding)
} else if (type === 'number' && !Buffer.TYPED_ARRAY_SUPPORT && !noZero) {
for (i = 0; i < length; i++) {
buf[i] = 0
}
}
return buf
}
Buffer.isBuffer = function (b) {
return !!(b != null && b._isBuffer)
}
Buffer.compare = function (a, b) {
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b))
throw new TypeError('Arguments must be Buffers')
var x = a.length
var y = b.length
for (var i = 0, len = Math.min(x, y); i < len && a[i] === b[i]; i++) {}
if (i !== len) {
x = a[i]
y = b[i]
}
if (x < y) return -1
if (y < x) return 1
return 0
}
Buffer.isEncoding = function (encoding) {
switch (String(encoding).toLowerCase()) {
case 'hex':
case 'utf8':
case 'utf-8':
case 'ascii':
case 'binary':
case 'base64':
case 'raw':
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return true
default:
return false
}
}
Buffer.concat = function (list, totalLength) {
if (!isArray(list)) throw new TypeError('Usage: Buffer.concat(list[, length])')
if (list.length === 0) {
return new Buffer(0)
} else if (list.length === 1) {
return list[0]
}
var i
if (totalLength === undefined) {
totalLength = 0
for (i = 0; i < list.length; i++) {
totalLength += list[i].length
}
}
var buf = new Buffer(totalLength)
var pos = 0
for (i = 0; i < list.length; i++) {
var item = list[i]
item.copy(buf, pos)
pos += item.length
}
return buf
}
Buffer.byteLength = function (str, encoding) {
var ret
str = str + ''
switch (encoding || 'utf8') {
case 'ascii':
case 'binary':
case 'raw':
ret = str.length
break
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
ret = str.length * 2
break
case 'hex':
ret = str.length >>> 1
break
case 'utf8':
case 'utf-8':
ret = utf8ToBytes(str).length
break
case 'base64':
ret = base64ToBytes(str).length
break
default:
ret = str.length
}
return ret
}
// pre-set for values that may exist in the future
Buffer.prototype.length = undefined
Buffer.prototype.parent = undefined
// toString(encoding, start=0, end=buffer.length)
Buffer.prototype.toString = function (encoding, start, end) {
var loweredCase = false
start = start >>> 0
end = end === undefined || end === Infinity ? this.length : end >>> 0
if (!encoding) encoding = 'utf8'
if (start < 0) start = 0
if (end > this.length) end = this.length
if (end <= start) return ''
while (true) {
switch (encoding) {
case 'hex':
return hexSlice(this, start, end)
case 'utf8':
case 'utf-8':
return utf8Slice(this, start, end)
case 'ascii':
return asciiSlice(this, start, end)
case 'binary':
return binarySlice(this, start, end)
case 'base64':
return base64Slice(this, start, end)
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return utf16leSlice(this, start, end)
default:
if (loweredCase)
throw new TypeError('Unknown encoding: ' + encoding)
encoding = (encoding + '').toLowerCase()
loweredCase = true
}
}
}
Buffer.prototype.equals = function (b) {
if(!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
return Buffer.compare(this, b) === 0
}
Buffer.prototype.inspect = function () {
var str = ''
var max = exports.INSPECT_MAX_BYTES
if (this.length > 0) {
str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
if (this.length > max)
str += ' ... '
}
return '<Buffer ' + str + '>'
}
Buffer.prototype.compare = function (b) {
if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
return Buffer.compare(this, b)
}
// `get` will be removed in Node 0.13+
Buffer.prototype.get = function (offset) {
console.log('.get() is deprecated. Access using array indexes instead.')
return this.readUInt8(offset)
}
// `set` will be removed in Node 0.13+
Buffer.prototype.set = function (v, offset) {
console.log('.set() is deprecated. Access using array indexes instead.')
return this.writeUInt8(v, offset)
}
function hexWrite (buf, string, offset, length) {
offset = Number(offset) || 0
var remaining = buf.length - offset
if (!length) {
length = remaining
} else {
length = Number(length)
if (length > remaining) {
length = remaining
}
}
// must be an even number of digits
var strLen = string.length
if (strLen % 2 !== 0) throw new Error('Invalid hex string')
if (length > strLen / 2) {
length = strLen / 2
}
for (var i = 0; i < length; i++) {
var byte = parseInt(string.substr(i * 2, 2), 16)
if (isNaN(byte)) throw new Error('Invalid hex string')
buf[offset + i] = byte
}
return i
}
function utf8Write (buf, string, offset, length) {
var charsWritten = blitBuffer(utf8ToBytes(string), buf, offset, length)
return charsWritten
}
function asciiWrite (buf, string, offset, length) {
var charsWritten = blitBuffer(asciiToBytes(string), buf, offset, length)
return charsWritten
}
function binaryWrite (buf, string, offset, length) {
return asciiWrite(buf, string, offset, length)
}
function base64Write (buf, string, offset, length) {
var charsWritten = blitBuffer(base64ToBytes(string), buf, offset, length)
return charsWritten
}
function utf16leWrite (buf, string, offset, length) {
var charsWritten = blitBuffer(utf16leToBytes(string), buf, offset, length, 2)
return charsWritten
}
Buffer.prototype.write = function (string, offset, length, encoding) {
// Support both (string, offset, length, encoding)
// and the legacy (string, encoding, offset, length)
if (isFinite(offset)) {
if (!isFinite(length)) {
encoding = length
length = undefined
}
} else { // legacy
var swap = encoding
encoding = offset
offset = length
length = swap
}
offset = Number(offset) || 0
var remaining = this.length - offset
if (!length) {
length = remaining
} else {
length = Number(length)
if (length > remaining) {
length = remaining
}
}
encoding = String(encoding || 'utf8').toLowerCase()
var ret
switch (encoding) {
case 'hex':
ret = hexWrite(this, string, offset, length)
break
case 'utf8':
case 'utf-8':
ret = utf8Write(this, string, offset, length)
break
case 'ascii':
ret = asciiWrite(this, string, offset, length)
break
case 'binary':
ret = binaryWrite(this, string, offset, length)
break
case 'base64':
ret = base64Write(this, string, offset, length)
break
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
ret = utf16leWrite(this, string, offset, length)
break
default:
throw new TypeError('Unknown encoding: ' + encoding)
}
return ret
}
Buffer.prototype.toJSON = function () {
return {
type: 'Buffer',
data: Array.prototype.slice.call(this._arr || this, 0)
}
}
function base64Slice (buf, start, end) {
if (start === 0 && end === buf.length) {
return base64.fromByteArray(buf)
} else {
return base64.fromByteArray(buf.slice(start, end))
}
}
function utf8Slice (buf, start, end) {
var res = ''
var tmp = ''
end = Math.min(buf.length, end)
for (var i = start; i < end; i++) {
if (buf[i] <= 0x7F) {
res += decodeUtf8Char(tmp) + String.fromCharCode(buf[i])
tmp = ''
} else {
tmp += '%' + buf[i].toString(16)
}
}
return res + decodeUtf8Char(tmp)
}
function asciiSlice (buf, start, end) {
var ret = ''
end = Math.min(buf.length, end)
for (var i = start; i < end; i++) {
ret += String.fromCharCode(buf[i])
}
return ret
}
function binarySlice (buf, start, end) {
return asciiSlice(buf, start, end)
}
function hexSlice (buf, start, end) {
var len = buf.length
if (!start || start < 0) start = 0
if (!end || end < 0 || end > len) end = len
var out = ''
for (var i = start; i < end; i++) {
out += toHex(buf[i])
}
return out
}
function utf16leSlice (buf, start, end) {
var bytes = buf.slice(start, end)
var res = ''
for (var i = 0; i < bytes.length; i += 2) {
res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
}
return res
}
Buffer.prototype.slice = function (start, end) {
var len = this.length
start = ~~start
end = end === undefined ? len : ~~end
if (start < 0) {
start += len;
if (start < 0)
start = 0
} else if (start > len) {
start = len
}
if (end < 0) {
end += len
if (end < 0)
end = 0
} else if (end > len) {
end = len
}
if (end < start)
end = start
if (Buffer.TYPED_ARRAY_SUPPORT) {
return Buffer._augment(this.subarray(start, end))
} else {
var sliceLen = end - start
var newBuf = new Buffer(sliceLen, undefined, true)
for (var i = 0; i < sliceLen; i++) {
newBuf[i] = this[i + start]
}
return newBuf
}
}
/*
* Need to make sure that buffer isn't trying to write out of bounds.
*/
function checkOffset (offset, ext, length) {
if ((offset % 1) !== 0 || offset < 0)
throw new RangeError('offset is not uint')
if (offset + ext > length)
throw new RangeError('Trying to access beyond buffer length')
}
Buffer.prototype.readUInt8 = function (offset, noAssert) {
if (!noAssert)
checkOffset(offset, 1, this.length)
return this[offset]
}
Buffer.prototype.readUInt16LE = function (offset, noAssert) {
if (!noAssert)
checkOffset(offset, 2, this.length)
return this[offset] | (this[offset + 1] << 8)
}
Buffer.prototype.readUInt16BE = function (offset, noAssert) {
if (!noAssert)
checkOffset(offset, 2, this.length)
return (this[offset] << 8) | this[offset + 1]
}
Buffer.prototype.readUInt32LE = function (offset, noAssert) {
if (!noAssert)
checkOffset(offset, 4, this.length)
return ((this[offset]) |
(this[offset + 1] << 8) |
(this[offset + 2] << 16)) +
(this[offset + 3] * 0x1000000)
}
Buffer.prototype.readUInt32BE = function (offset, noAssert) {
if (!noAssert)
checkOffset(offset, 4, this.length)
return (this[offset] * 0x1000000) +
((this[offset + 1] << 16) |
(this[offset + 2] << 8) |
this[offset + 3])
}
Buffer.prototype.readInt8 = function (offset, noAssert) {
if (!noAssert)
checkOffset(offset, 1, this.length)
if (!(this[offset] & 0x80))
return (this[offset])
return ((0xff - this[offset] + 1) * -1)
}
Buffer.prototype.readInt16LE = function (offset, noAssert) {
if (!noAssert)
checkOffset(offset, 2, this.length)
var val = this[offset] | (this[offset + 1] << 8)
return (val & 0x8000) ? val | 0xFFFF0000 : val
}
Buffer.prototype.readInt16BE = function (offset, noAssert) {
if (!noAssert)
checkOffset(offset, 2, this.length)
var val = this[offset + 1] | (this[offset] << 8)
return (val & 0x8000) ? val | 0xFFFF0000 : val
}
Buffer.prototype.readInt32LE = function (offset, noAssert) {
if (!noAssert)
checkOffset(offset, 4, this.length)
return (this[offset]) |
(this[offset + 1] << 8) |
(this[offset + 2] << 16) |
(this[offset + 3] << 24)
}
Buffer.prototype.readInt32BE = function (offset, noAssert) {
if (!noAssert)
checkOffset(offset, 4, this.length)
return (this[offset] << 24) |
(this[offset + 1] << 16) |
(this[offset + 2] << 8) |
(this[offset + 3])
}
Buffer.prototype.readFloatLE = function (offset, noAssert) {
if (!noAssert)
checkOffset(offset, 4, this.length)
return ieee754.read(this, offset, true, 23, 4)
}
Buffer.prototype.readFloatBE = function (offset, noAssert) {
if (!noAssert)
checkOffset(offset, 4, this.length)
return ieee754.read(this, offset, false, 23, 4)
}
Buffer.prototype.readDoubleLE = function (offset, noAssert) {
if (!noAssert)
checkOffset(offset, 8, this.length)
return ieee754.read(this, offset, true, 52, 8)
}
Buffer.prototype.readDoubleBE = function (offset, noAssert) {
if (!noAssert)
checkOffset(offset, 8, this.length)
return ieee754.read(this, offset, false, 52, 8)
}
function checkInt (buf, value, offset, ext, max, min) {
if (!Buffer.isBuffer(buf)) throw new TypeError('buffer must be a Buffer instance')
if (value > max || value < min) throw new TypeError('value is out of bounds')
if (offset + ext > buf.length) throw new TypeError('index out of range')
}
Buffer.prototype.writeUInt8 = function (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert)
checkInt(this, value, offset, 1, 0xff, 0)
if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
this[offset] = value
return offset + 1
}
function objectWriteUInt16 (buf, value, offset, littleEndian) {
if (value < 0) value = 0xffff + value + 1
for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
(littleEndian ? i : 1 - i) * 8
}
}
Buffer.prototype.writeUInt16LE = function (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert)
checkInt(this, value, offset, 2, 0xffff, 0)
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset] = value
this[offset + 1] = (value >>> 8)
} else objectWriteUInt16(this, value, offset, true)
return offset + 2
}
Buffer.prototype.writeUInt16BE = function (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert)
checkInt(this, value, offset, 2, 0xffff, 0)
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset] = (value >>> 8)
this[offset + 1] = value
} else objectWriteUInt16(this, value, offset, false)
return offset + 2
}
function objectWriteUInt32 (buf, value, offset, littleEndian) {
if (value < 0) value = 0xffffffff + value + 1
for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
}
}
Buffer.prototype.writeUInt32LE = function (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert)
checkInt(this, value, offset, 4, 0xffffffff, 0)
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset + 3] = (value >>> 24)
this[offset + 2] = (value >>> 16)
this[offset + 1] = (value >>> 8)
this[offset] = value
} else objectWriteUInt32(this, value, offset, true)
return offset + 4
}
Buffer.prototype.writeUInt32BE = function (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert)
checkInt(this, value, offset, 4, 0xffffffff, 0)
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset] = (value >>> 24)
this[offset + 1] = (value >>> 16)
this[offset + 2] = (value >>> 8)
this[offset + 3] = value
} else objectWriteUInt32(this, value, offset, false)
return offset + 4
}
Buffer.prototype.writeInt8 = function (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert)
checkInt(this, value, offset, 1, 0x7f, -0x80)
if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
if (value < 0) value = 0xff + value + 1
this[offset] = value
return offset + 1
}
Buffer.prototype.writeInt16LE = function (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert)
checkInt(this, value, offset, 2, 0x7fff, -0x8000)
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset] = value
this[offset + 1] = (value >>> 8)
} else objectWriteUInt16(this, value, offset, true)
return offset + 2
}
Buffer.prototype.writeInt16BE = function (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert)
checkInt(this, value, offset, 2, 0x7fff, -0x8000)
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset] = (value >>> 8)
this[offset + 1] = value
} else objectWriteUInt16(this, value, offset, false)
return offset + 2
}
Buffer.prototype.writeInt32LE = function (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert)
checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset] = value
this[offset + 1] = (value >>> 8)
this[offset + 2] = (value >>> 16)
this[offset + 3] = (value >>> 24)
} else objectWriteUInt32(this, value, offset, true)
return offset + 4
}
Buffer.prototype.writeInt32BE = function (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert)
checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
if (value < 0) value = 0xffffffff + value + 1
if (Buffer.TYPED_ARRAY_SUPPORT) {
this[offset] = (value >>> 24)
this[offset + 1] = (value >>> 16)
this[offset + 2] = (value >>> 8)
this[offset + 3] = value
} else objectWriteUInt32(this, value, offset, false)
return offset + 4
}
function checkIEEE754 (buf, value, offset, ext, max, min) {
if (value > max || value < min) throw new TypeError('value is out of bounds')
if (offset + ext > buf.length) throw new TypeError('index out of range')
}
function writeFloat (buf, value, offset, littleEndian, noAssert) {
if (!noAssert)
checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
ieee754.write(buf, value, offset, littleEndian, 23, 4)
return offset + 4
}
Buffer.prototype.writeFloatLE = function (value, offset, noAssert) {
return writeFloat(this, value, offset, true, noAssert)
}
Buffer.prototype.writeFloatBE = function (value, offset, noAssert) {
return writeFloat(this, value, offset, false, noAssert)
}
function writeDouble (buf, value, offset, littleEndian, noAssert) {
if (!noAssert)
checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
ieee754.write(buf, value, offset, littleEndian, 52, 8)
return offset + 8
}
Buffer.prototype.writeDoubleLE = function (value, offset, noAssert) {
return writeDouble(this, value, offset, true, noAssert)
}
Buffer.prototype.writeDoubleBE = function (value, offset, noAssert) {
return writeDouble(this, value, offset, false, noAssert)
}
// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function (target, target_start, start, end) {
var source = this
if (!start) start = 0
if (!end && end !== 0) end = this.length
if (!target_start) target_start = 0
// Copy 0 bytes; we're done
if (end === start) return
if (target.length === 0 || source.length === 0) return
// Fatal error conditions
if (end < start) throw new TypeError('sourceEnd < sourceStart')
if (target_start < 0 || target_start >= target.length)
throw new TypeError('targetStart out of bounds')
if (start < 0 || start >= source.length) throw new TypeError('sourceStart out of bounds')
if (end < 0 || end > source.length) throw new TypeError('sourceEnd out of bounds')
// Are we oob?
if (end > this.length)
end = this.length
if (target.length - target_start < end - start)
end = target.length - target_start + start
var len = end - start
if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
for (var i = 0; i < len; i++) {
target[i + target_start] = this[i + start]
}
} else {
target._set(this.subarray(start, start + len), target_start)
}
}
// fill(value, start=0, end=buffer.length)
Buffer.prototype.fill = function (value, start, end) {
if (!value) value = 0
if (!start) start = 0
if (!end) end = this.length
if (end < start) throw new TypeError('end < start')
// Fill 0 bytes; we're done
if (end === start) return
if (this.length === 0) return
if (start < 0 || start >= this.length) throw new TypeError('start out of bounds')
if (end < 0 || end > this.length) throw new TypeError('end out of bounds')
var i
if (typeof value === 'number') {
for (i = start; i < end; i++) {
this[i] = value
}
} else {
var bytes = utf8ToBytes(value.toString())
var len = bytes.length
for (i = start; i < end; i++) {
this[i] = bytes[i % len]
}
}
return this
}
/**
* Creates a new `ArrayBuffer` with the *copied* memory of the buffer instance.
* Added in Node 0.12. Only available in browsers that support ArrayBuffer.
*/
Buffer.prototype.toArrayBuffer = function () {
if (typeof Uint8Array !== 'undefined') {
if (Buffer.TYPED_ARRAY_SUPPORT) {
return (new Buffer(this)).buffer
} else {
var buf = new Uint8Array(this.length)
for (var i = 0, len = buf.length; i < len; i += 1) {
buf[i] = this[i]
}
return buf.buffer
}
} else {
throw new TypeError('Buffer.toArrayBuffer not supported in this browser')
}
}
// HELPER FUNCTIONS
// ================
var BP = Buffer.prototype
/**
* Augment a Uint8Array *instance* (not the Uint8Array class!) with Buffer methods
*/
Buffer._augment = function (arr) {
arr.constructor = Buffer
arr._isBuffer = true
// save reference to original Uint8Array get/set methods before overwriting
arr._get = arr.get
arr._set = arr.set
// deprecated, will be removed in node 0.13+
arr.get = BP.get
arr.set = BP.set
arr.write = BP.write
arr.toString = BP.toString
arr.toLocaleString = BP.toString
arr.toJSON = BP.toJSON
arr.equals = BP.equals
arr.compare = BP.compare
arr.copy = BP.copy
arr.slice = BP.slice
arr.readUInt8 = BP.readUInt8
arr.readUInt16LE = BP.readUInt16LE
arr.readUInt16BE = BP.readUInt16BE
arr.readUInt32LE = BP.readUInt32LE
arr.readUInt32BE = BP.readUInt32BE
arr.readInt8 = BP.readInt8
arr.readInt16LE = BP.readInt16LE
arr.readInt16BE = BP.readInt16BE
arr.readInt32LE = BP.readInt32LE
arr.readInt32BE = BP.readInt32BE
arr.readFloatLE = BP.readFloatLE
arr.readFloatBE = BP.readFloatBE
arr.readDoubleLE = BP.readDoubleLE
arr.readDoubleBE = BP.readDoubleBE
arr.writeUInt8 = BP.writeUInt8
arr.writeUInt16LE = BP.writeUInt16LE
arr.writeUInt16BE = BP.writeUInt16BE
arr.writeUInt32LE = BP.writeUInt32LE
arr.writeUInt32BE = BP.writeUInt32BE
arr.writeInt8 = BP.writeInt8
arr.writeInt16LE = BP.writeInt16LE
arr.writeInt16BE = BP.writeInt16BE
arr.writeInt32LE = BP.writeInt32LE
arr.writeInt32BE = BP.writeInt32BE
arr.writeFloatLE = BP.writeFloatLE
arr.writeFloatBE = BP.writeFloatBE
arr.writeDoubleLE = BP.writeDoubleLE
arr.writeDoubleBE = BP.writeDoubleBE
arr.fill = BP.fill
arr.inspect = BP.inspect
arr.toArrayBuffer = BP.toArrayBuffer
return arr
}
var INVALID_BASE64_RE = /[^+\/0-9A-z]/g
function base64clean (str) {
// Node strips out invalid characters like \n and \t from the string, base64-js does not
str = stringtrim(str).replace(INVALID_BASE64_RE, '')
// Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
while (str.length % 4 !== 0) {
str = str + '='
}
return str
}
function stringtrim (str) {
if (str.trim) return str.trim()
return str.replace(/^\s+|\s+$/g, '')
}
function isArrayish (subject) {
return isArray(subject) || Buffer.isBuffer(subject) ||
subject && typeof subject === 'object' &&
typeof subject.length === 'number'
}
function toHex (n) {
if (n < 16) return '0' + n.toString(16)
return n.toString(16)
}
function utf8ToBytes (str) {
var byteArray = []
for (var i = 0; i < str.length; i++) {
var b = str.charCodeAt(i)
if (b <= 0x7F) {
byteArray.push(b)
} else {
var start = i
if (b >= 0xD800 && b <= 0xDFFF) i++
var h = encodeURIComponent(str.slice(start, i+1)).substr(1).split('%')
for (var j = 0; j < h.length; j++) {
byteArray.push(parseInt(h[j], 16))
}
}
}
return byteArray
}
function asciiToBytes (str) {
var byteArray = []
for (var i = 0; i < str.length; i++) {
// Node's code seems to be doing this and not & 0x7F..
byteArray.push(str.charCodeAt(i) & 0xFF)
}
return byteArray
}
function utf16leToBytes (str) {
var c, hi, lo
var byteArray = []
for (var i = 0; i < str.length; i++) {
c = str.charCodeAt(i)
hi = c >> 8
lo = c % 256
byteArray.push(lo)
byteArray.push(hi)
}
return byteArray
}
function base64ToBytes (str) {
return base64.toByteArray(str)
}
function blitBuffer (src, dst, offset, length, unitSize) {
if (unitSize) length -= length % unitSize;
for (var i = 0; i < length; i++) {
if ((i + offset >= dst.length) || (i >= src.length))
break
dst[i + offset] = src[i]
}
return i
}
function decodeUtf8Char (str) {
try {
return decodeURIComponent(str)
} catch (err) {
return String.fromCharCode(0xFFFD) // UTF 8 invalid char
}
}
},{"base64-js":2,"ieee754":3,"is-array":4}],2:[function(_dereq_,module,exports){
var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
;(function (exports) {
'use strict';
var Arr = (typeof Uint8Array !== 'undefined')
? Uint8Array
: Array
var PLUS = '+'.charCodeAt(0)
var SLASH = '/'.charCodeAt(0)
var NUMBER = '0'.charCodeAt(0)
var LOWER = 'a'.charCodeAt(0)
var UPPER = 'A'.charCodeAt(0)
function decode (elt) {
var code = elt.charCodeAt(0)
if (code === PLUS)
return 62 // '+'
if (code === SLASH)
return 63 // '/'
if (code < NUMBER)
return -1 //no match
if (code < NUMBER + 10)
return code - NUMBER + 26 + 26
if (code < UPPER + 26)
return code - UPPER
if (code < LOWER + 26)
return code - LOWER + 26
}
function b64ToByteArray (b64) {
var i, j, l, tmp, placeHolders, arr
if (b64.length % 4 > 0) {
throw new Error('Invalid string. Length must be a multiple of 4')
}
// the number of equal signs (place holders)
// if there are two placeholders, than the two characters before it
// represent one byte
// if there is only one, then the three characters before it represent 2 bytes
// this is just a cheap hack to not do indexOf twice
var len = b64.length
placeHolders = '=' === b64.charAt(len - 2) ? 2 : '=' === b64.charAt(len - 1) ? 1 : 0
// base64 is 4/3 + up to two characters of the original data
arr = new Arr(b64.length * 3 / 4 - placeHolders)
// if there are placeholders, only get up to the last complete 4 chars
l = placeHolders > 0 ? b64.length - 4 : b64.length
var L = 0
function push (v) {
arr[L++] = v
}
for (i = 0, j = 0; i < l; i += 4, j += 3) {
tmp = (decode(b64.charAt(i)) << 18) | (decode(b64.charAt(i + 1)) << 12) | (decode(b64.charAt(i + 2)) << 6) | decode(b64.charAt(i + 3))
push((tmp & 0xFF0000) >> 16)
push((tmp & 0xFF00) >> 8)
push(tmp & 0xFF)
}
if (placeHolders === 2) {
tmp = (decode(b64.charAt(i)) << 2) | (decode(b64.charAt(i + 1)) >> 4)
push(tmp & 0xFF)
} else if (placeHolders === 1) {
tmp = (decode(b64.charAt(i)) << 10) | (decode(b64.charAt(i + 1)) << 4) | (decode(b64.charAt(i + 2)) >> 2)
push((tmp >> 8) & 0xFF)
push(tmp & 0xFF)
}
return arr
}
function uint8ToBase64 (uint8) {
var i,
extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes
output = "",
temp, length
function encode (num) {
return lookup.charAt(num)
}
function tripletToBase64 (num) {
return encode(num >> 18 & 0x3F) + encode(num >> 12 & 0x3F) + encode(num >> 6 & 0x3F) + encode(num & 0x3F)
}
// go through the array every three bytes, we'll deal with trailing stuff later
for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) {
temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
output += tripletToBase64(temp)
}
// pad the end with zeros, but make sure to not forget the extra bytes
switch (extraBytes) {
case 1:
temp = uint8[uint8.length - 1]
output += encode(temp >> 2)
output += encode((temp << 4) & 0x3F)
output += '=='
break
case 2:
temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1])
output += encode(temp >> 10)
output += encode((temp >> 4) & 0x3F)
output += encode((temp << 2) & 0x3F)
output += '='
break
}
return output
}
exports.toByteArray = b64ToByteArray
exports.fromByteArray = uint8ToBase64
}(typeof exports === 'undefined' ? (this.base64js = {}) : exports))
},{}],3:[function(_dereq_,module,exports){
exports.read = function(buffer, offset, isLE, mLen, nBytes) {
var e, m,
eLen = nBytes * 8 - mLen - 1,
eMax = (1 << eLen) - 1,
eBias = eMax >> 1,
nBits = -7,
i = isLE ? (nBytes - 1) : 0,
d = isLE ? -1 : 1,
s = buffer[offset + i];
i += d;
e = s & ((1 << (-nBits)) - 1);
s >>= (-nBits);
nBits += eLen;
for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8);
m = e & ((1 << (-nBits)) - 1);
e >>= (-nBits);
nBits += mLen;
for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8);
if (e === 0) {
e = 1 - eBias;
} else if (e === eMax) {
return m ? NaN : ((s ? -1 : 1) * Infinity);
} else {
m = m + Math.pow(2, mLen);
e = e - eBias;
}
return (s ? -1 : 1) * m * Math.pow(2, e - mLen);
};
exports.write = function(buffer, value, offset, isLE, mLen, nBytes) {
var e, m, c,
eLen = nBytes * 8 - mLen - 1,
eMax = (1 << eLen) - 1,
eBias = eMax >> 1,
rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0),
i = isLE ? 0 : (nBytes - 1),
d = isLE ? 1 : -1,
s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0;
value = Math.abs(value);
if (isNaN(value) || value === Infinity) {
m = isNaN(value) ? 1 : 0;
e = eMax;
} else {
e = Math.floor(Math.log(value) / Math.LN2);
if (value * (c = Math.pow(2, -e)) < 1) {
e--;
c *= 2;
}
if (e + eBias >= 1) {
value += rt / c;
} else {
value += rt * Math.pow(2, 1 - eBias);
}
if (value * c >= 2) {
e++;
c /= 2;
}
if (e + eBias >= eMax) {
m = 0;
e = eMax;
} else if (e + eBias >= 1) {
m = (value * c - 1) * Math.pow(2, mLen);
e = e + eBias;
} else {
m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen);
e = 0;
}
}
for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8);
e = (e << mLen) | m;
eLen += mLen;
for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8);
buffer[offset + i - d] |= s * 128;
};
},{}],4:[function(_dereq_,module,exports){
/**
* isArray
*/
var isArray = Array.isArray;
/**
* toString
*/
var str = Object.prototype.toString;
/**
* Whether or not the given `val`
* is an array.
*
* example:
*
* isArray([]);
* // > true
* isArray(arguments);
* // > false
* isArray('');
* // > false
*
* @param {mixed} val
* @return {bool}
*/
module.exports = isArray || function (val) {
return !! val && '[object Array]' == str.call(val);
};
},{}],5:[function(_dereq_,module,exports){
(function (Buffer){
function FilerBuffer (subject, encoding, nonZero) {
// Automatically turn ArrayBuffer into Uint8Array so that underlying
// Buffer code doesn't just throw away and ignore ArrayBuffer data.
if (subject instanceof ArrayBuffer) {
subject = new Uint8Array(subject);
}
return new Buffer(subject, encoding, nonZero);
};
// Inherit prototype from Buffer
FilerBuffer.prototype = Object.create(Buffer.prototype);
FilerBuffer.prototype.constructor = FilerBuffer;
// Also copy static methods onto FilerBuffer ctor
Object.keys(Buffer).forEach(function (p) {
if (Buffer.hasOwnProperty(p)) {
FilerBuffer[p] = Buffer[p];
}
});
module.exports = FilerBuffer;
}).call(this,_dereq_("buffer").Buffer)
},{"buffer":1}]},{},[5])
(5)
});