src/DSBDecode.js
import pako from 'pako';
function atob(a) {
for (
var b,
c,
d =
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=',
e = String(a).replace(/=+$/, ''),
f = 0,
g = 0,
h = '';
(c = e.charAt(g++));
~c && ((b = f % 4 ? 64 * b + c : c), f++ % 4)
? (h += String.fromCharCode(255 & (b >> ((-2 * f) & 6))))
: 0
)
c = d.indexOf(c);
return h;
}
/**
*
* @private
* @param {*} ToDecode
*/
export default function(ToDecode) {
var b = StringView.base64ToBytes(ToDecode),
c = pako.inflate(b),
d = new StringView(c),
e = d.toString(),
f = JSON.parse(e);
return f;
}
function StringView(
vInput,
sEncoding /* optional (default: UTF-8) */,
nOffset /* optional */,
nLength /* optional */
) {
var fTAView,
aWhole,
aRaw,
fPutOutptCode,
fGetOutptChrSize,
nInptLen,
nStartIdx = isFinite(nOffset) ? nOffset : 0,
nTranscrType = 15;
if (sEncoding) {
this.encoding = sEncoding.toString();
}
encSwitch: switch (this.encoding) {
case 'UTF-8':
fPutOutptCode = StringView.putUTF8CharCode;
fGetOutptChrSize = StringView.getUTF8CharLength;
fTAView = Uint8Array;
break encSwitch;
case 'UTF-16':
fPutOutptCode = StringView.putUTF16CharCode;
fGetOutptChrSize = StringView.getUTF16CharLength;
fTAView = Uint16Array;
break encSwitch;
case 'UTF-32':
fTAView = Uint32Array;
nTranscrType &= 14;
break encSwitch;
default:
/* case "ASCII", or case "BinaryString" or unknown cases */
fTAView = Uint8Array;
nTranscrType &= 14;
}
typeSwitch: switch (typeof vInput) {
case 'string':
/* the input argument is a primitive string: a new buffer will be created. */
nTranscrType &= 7;
break typeSwitch;
case 'object':
classSwitch: switch (vInput.constructor) {
case StringView:
/* the input argument is a stringView: a new buffer will be created. */
nTranscrType &= 3;
break typeSwitch;
case String:
/* the input argument is an objectified string: a new buffer will be created. */
nTranscrType &= 7;
break typeSwitch;
case ArrayBuffer:
/* the input argument is an arrayBuffer: the buffer will be shared. */
aWhole = new fTAView(vInput);
nInptLen =
this.encoding === 'UTF-32'
? vInput.byteLength >>> 2
: this.encoding === 'UTF-16'
? vInput.byteLength >>> 1
: vInput.byteLength;
aRaw =
nStartIdx === 0 &&
(!isFinite(nLength) || nLength === nInptLen)
? aWhole
: new fTAView(
vInput,
nStartIdx,
!isFinite(nLength)
? nInptLen - nStartIdx
: nLength
);
break typeSwitch;
case Uint32Array:
case Uint16Array:
case Uint8Array:
/* the input argument is a typedArray: the buffer, and possibly the array itself, will be shared. */
fTAView = vInput.constructor;
nInptLen = vInput.length;
aWhole =
vInput.byteOffset === 0 &&
vInput.length ===
(fTAView === Uint32Array
? vInput.buffer.byteLength >>> 2
: fTAView === Uint16Array
? vInput.buffer.byteLength >>> 1
: vInput.buffer.byteLength)
? vInput
: new fTAView(vInput.buffer);
aRaw =
nStartIdx === 0 &&
(!isFinite(nLength) || nLength === nInptLen)
? vInput
: vInput.subarray(
nStartIdx,
isFinite(nLength)
? nStartIdx + nLength
: nInptLen
);
break typeSwitch;
default:
/* the input argument is an array or another serializable object: a new typedArray will be created. */
aWhole = new fTAView(vInput);
nInptLen = aWhole.length;
aRaw =
nStartIdx === 0 &&
(!isFinite(nLength) || nLength === nInptLen)
? aWhole
: aWhole.subarray(
nStartIdx,
isFinite(nLength)
? nStartIdx + nLength
: nInptLen
);
}
break typeSwitch;
default:
/* the input argument is a number, a boolean or a function: a new typedArray will be created. */
aWhole = aRaw = new fTAView(Number(vInput) || 0);
}
if (nTranscrType < 8) {
var vSource,
nOutptLen,
nCharStart,
nCharEnd,
nEndIdx,
fGetInptChrSize,
fGetInptChrCode;
if (nTranscrType & 4) {
/* input is string */
vSource = vInput;
nOutptLen = nInptLen = vSource.length;
nTranscrType ^= this.encoding === 'UTF-32' ? 0 : 2;
/* ...or...: nTranscrType ^= Number(this.encoding !== "UTF-32") << 1; */
nStartIdx = nCharStart = nOffset
? Math.max((nOutptLen + nOffset) % nOutptLen, 0)
: 0;
nEndIdx = nCharEnd =
(Number.isInteger(nLength)
? Math.min(Math.max(nLength, 0) + nStartIdx, nOutptLen)
: nOutptLen) - 1;
} else {
/* input is stringView */
vSource = vInput.rawData;
nInptLen = vInput.makeIndex();
nStartIdx = nCharStart = nOffset
? Math.max((nInptLen + nOffset) % nInptLen, 0)
: 0;
nOutptLen = Number.isInteger(nLength)
? Math.min(Math.max(nLength, 0), nInptLen - nCharStart)
: nInptLen;
nEndIdx = nCharEnd = nOutptLen + nCharStart;
if (vInput.encoding === 'UTF-8') {
fGetInptChrSize = StringView.getUTF8CharLength;
fGetInptChrCode = StringView.loadUTF8CharCode;
} else if (vInput.encoding === 'UTF-16') {
fGetInptChrSize = StringView.getUTF16CharLength;
fGetInptChrCode = StringView.loadUTF16CharCode;
} else {
nTranscrType &= 1;
}
}
if (
nOutptLen === 0 ||
(nTranscrType < 4 &&
vSource.encoding === this.encoding &&
nCharStart === 0 &&
nOutptLen === nInptLen)
) {
/* the encoding is the same, the length too and the offset is 0... or the input is empty! */
nTranscrType = 7;
}
conversionSwitch: switch (nTranscrType) {
case 0:
/* both the source and the new StringView have a fixed-length encoding... */
aWhole = new fTAView(nOutptLen);
for (
var nOutptIdx = 0;
nOutptIdx < nOutptLen;
aWhole[nOutptIdx] = vSource[nStartIdx + nOutptIdx++]
);
break conversionSwitch;
case 1:
/* the source has a fixed-length encoding but the new StringView has a variable-length encoding... */
/* mapping... */
nOutptLen = 0;
for (var nInptIdx = nStartIdx; nInptIdx < nEndIdx; nInptIdx++) {
nOutptLen += fGetOutptChrSize(vSource[nInptIdx]);
}
aWhole = new fTAView(nOutptLen);
/* transcription of the source... */
for (
var nInptIdx = nStartIdx, nOutptIdx = 0;
nOutptIdx < nOutptLen;
nInptIdx++
) {
nOutptIdx = fPutOutptCode(
aWhole,
vSource[nInptIdx],
nOutptIdx
);
}
break conversionSwitch;
case 2:
/* the source has a variable-length encoding but the new StringView has a fixed-length encoding... */
/* mapping... */
nStartIdx = 0;
var nChrCode;
for (nChrIdx = 0; nChrIdx < nCharStart; nChrIdx++) {
nChrCode = fGetInptChrCode(vSource, nStartIdx);
nStartIdx += fGetInptChrSize(nChrCode);
}
aWhole = new fTAView(nOutptLen);
/* transcription of the source... */
for (
var nInptIdx = nStartIdx, nOutptIdx = 0;
nOutptIdx < nOutptLen;
nInptIdx += fGetInptChrSize(nChrCode), nOutptIdx++
) {
nChrCode = fGetInptChrCode(vSource, nInptIdx);
aWhole[nOutptIdx] = nChrCode;
}
break conversionSwitch;
case 3:
/* both the source and the new StringView have a variable-length encoding... */
/* mapping... */
nOutptLen = 0;
var nChrCode;
for (
var nChrIdx = 0, nInptIdx = 0;
nChrIdx < nCharEnd;
nInptIdx += fGetInptChrSize(nChrCode)
) {
nChrCode = fGetInptChrCode(vSource, nInptIdx);
if (nChrIdx === nCharStart) {
nStartIdx = nInptIdx;
}
if (++nChrIdx > nCharStart) {
nOutptLen += fGetOutptChrSize(nChrCode);
}
}
aWhole = new fTAView(nOutptLen);
/* transcription... */
for (
var nInptIdx = nStartIdx, nOutptIdx = 0;
nOutptIdx < nOutptLen;
nInptIdx += fGetInptChrSize(nChrCode)
) {
nChrCode = fGetInptChrCode(vSource, nInptIdx);
nOutptIdx = fPutOutptCode(aWhole, nChrCode, nOutptIdx);
}
break conversionSwitch;
case 4:
/* DOMString to ASCII or BinaryString or other unknown encodings */
aWhole = new fTAView(nOutptLen);
/* transcription... */
for (var nIdx = 0; nIdx < nOutptLen; nIdx++) {
aWhole[nIdx] = vSource.charCodeAt(nIdx) & 0xff;
}
break conversionSwitch;
case 5:
/* DOMString to UTF-8 or to UTF-16 */
/* mapping... */
nOutptLen = 0;
for (var nMapIdx = 0; nMapIdx < nInptLen; nMapIdx++) {
if (nMapIdx === nCharStart) {
nStartIdx = nOutptLen;
}
nOutptLen += fGetOutptChrSize(vSource.charCodeAt(nMapIdx));
if (nMapIdx === nCharEnd) {
nEndIdx = nOutptLen;
}
}
aWhole = new fTAView(nOutptLen);
/* transcription... */
for (
var nOutptIdx = 0, nChrIdx = 0;
nOutptIdx < nOutptLen;
nChrIdx++
) {
nOutptIdx = fPutOutptCode(
aWhole,
vSource.charCodeAt(nChrIdx),
nOutptIdx
);
}
break conversionSwitch;
case 6:
/* DOMString to UTF-32 */
aWhole = new fTAView(nOutptLen);
/* transcription... */
for (var nIdx = 0; nIdx < nOutptLen; nIdx++) {
aWhole[nIdx] = vSource.charCodeAt(nIdx);
}
break conversionSwitch;
case 7:
aWhole = new fTAView(nOutptLen ? vSource : 0);
break conversionSwitch;
}
aRaw =
nTranscrType > 3 && (nStartIdx > 0 || nEndIdx < aWhole.length - 1)
? aWhole.subarray(nStartIdx, nEndIdx)
: aWhole;
}
this.buffer = aWhole.buffer;
this.bufferView = aWhole;
this.rawData = aRaw;
Object.freeze(this);
}
/* CONSTRUCTOR'S METHODS */
StringView.loadUTF8CharCode = function(aChars, nIdx) {
var nLen = aChars.length,
nPart = aChars[nIdx];
return nPart > 251 && nPart < 254 && nIdx + 5 < nLen
? /* (nPart - 252 << 30) may be not safe in ECMAScript! So...: */
/* six bytes */ (nPart - 252) * 1073741824 +
((aChars[nIdx + 1] - 128) << 24) +
((aChars[nIdx + 2] - 128) << 18) +
((aChars[nIdx + 3] - 128) << 12) +
((aChars[nIdx + 4] - 128) << 6) +
aChars[nIdx + 5] -
128
: nPart > 247 && nPart < 252 && nIdx + 4 < nLen
? /* five bytes */ ((nPart - 248) << 24) +
((aChars[nIdx + 1] - 128) << 18) +
((aChars[nIdx + 2] - 128) << 12) +
((aChars[nIdx + 3] - 128) << 6) +
aChars[nIdx + 4] -
128
: nPart > 239 && nPart < 248 && nIdx + 3 < nLen
? /* four bytes */ ((nPart - 240) << 18) +
((aChars[nIdx + 1] - 128) << 12) +
((aChars[nIdx + 2] - 128) << 6) +
aChars[nIdx + 3] -
128
: nPart > 223 && nPart < 240 && nIdx + 2 < nLen
? /* three bytes */ ((nPart - 224) << 12) +
((aChars[nIdx + 1] - 128) << 6) +
aChars[nIdx + 2] -
128
: nPart > 191 && nPart < 224 && nIdx + 1 < nLen
? /* two bytes */ ((nPart - 192) << 6) + aChars[nIdx + 1] - 128
: /* one byte */ nPart;
};
StringView.putUTF8CharCode = function(aTarget, nChar, nPutAt) {
var nIdx = nPutAt;
if (nChar < 0x80 /* 128 */) {
/* one byte */
aTarget[nIdx++] = nChar;
} else if (nChar < 0x800 /* 2048 */) {
/* two bytes */
aTarget[nIdx++] = 0xc0 /* 192 */ + (nChar >>> 6);
aTarget[nIdx++] = 0x80 /* 128 */ + (nChar & 0x3f) /* 63 */;
} else if (nChar < 0x10000 /* 65536 */) {
/* three bytes */
aTarget[nIdx++] = 0xe0 /* 224 */ + (nChar >>> 12);
aTarget[nIdx++] = 0x80 /* 128 */ + ((nChar >>> 6) & 0x3f) /* 63 */;
aTarget[nIdx++] = 0x80 /* 128 */ + (nChar & 0x3f) /* 63 */;
} else if (nChar < 0x200000 /* 2097152 */) {
/* four bytes */
aTarget[nIdx++] = 0xf0 /* 240 */ + (nChar >>> 18);
aTarget[nIdx++] = 0x80 /* 128 */ + ((nChar >>> 12) & 0x3f) /* 63 */;
aTarget[nIdx++] = 0x80 /* 128 */ + ((nChar >>> 6) & 0x3f) /* 63 */;
aTarget[nIdx++] = 0x80 /* 128 */ + (nChar & 0x3f) /* 63 */;
} else if (nChar < 0x4000000 /* 67108864 */) {
/* five bytes */
aTarget[nIdx++] = 0xf8 /* 248 */ + (nChar >>> 24);
aTarget[nIdx++] = 0x80 /* 128 */ + ((nChar >>> 18) & 0x3f) /* 63 */;
aTarget[nIdx++] = 0x80 /* 128 */ + ((nChar >>> 12) & 0x3f) /* 63 */;
aTarget[nIdx++] = 0x80 /* 128 */ + ((nChar >>> 6) & 0x3f) /* 63 */;
aTarget[nIdx++] = 0x80 /* 128 */ + (nChar & 0x3f) /* 63 */;
} /* if (nChar <= 0x7fffffff) */ else {
/* 2147483647 */
/* six bytes */
aTarget[nIdx++] =
0xfc /* 252 */ +
/* (nChar >>> 30) may be not safe in ECMAScript! So...: */ nChar /
1073741824;
aTarget[nIdx++] = 0x80 /* 128 */ + ((nChar >>> 24) & 0x3f) /* 63 */;
aTarget[nIdx++] = 0x80 /* 128 */ + ((nChar >>> 18) & 0x3f) /* 63 */;
aTarget[nIdx++] = 0x80 /* 128 */ + ((nChar >>> 12) & 0x3f) /* 63 */;
aTarget[nIdx++] = 0x80 /* 128 */ + ((nChar >>> 6) & 0x3f) /* 63 */;
aTarget[nIdx++] = 0x80 /* 128 */ + (nChar & 0x3f) /* 63 */;
}
return nIdx;
};
StringView.getUTF8CharLength = function(nChar) {
return nChar < 0x80
? 1
: nChar < 0x800
? 2
: nChar < 0x10000
? 3
: nChar < 0x200000
? 4
: nChar < 0x4000000
? 5
: 6;
};
StringView.loadUTF16CharCode = function(aChars, nIdx) {
/* UTF-16 to DOMString decoding algorithm */
var nFrstChr = aChars[nIdx];
return nFrstChr > 0xd7bf /* 55231 */ && nIdx + 1 < aChars.length
? ((nFrstChr - 0xd800) /* 55296 */ << 10) +
aChars[nIdx + 1] +
0x2400 /* 9216 */
: nFrstChr;
};
StringView.putUTF16CharCode = function(aTarget, nChar, nPutAt) {
var nIdx = nPutAt;
if (nChar < 0x10000 /* 65536 */) {
/* one element */
aTarget[nIdx++] = nChar;
} else {
/* two elements */
aTarget[nIdx++] = 0xd7c0 /* 55232 */ + (nChar >>> 10);
aTarget[nIdx++] = 0xdc00 /* 56320 */ + (nChar & 0x3ff) /* 1023 */;
}
return nIdx;
};
StringView.getUTF16CharLength = function(nChar) {
return nChar < 0x10000 ? 1 : 2;
};
/* Array of bytes to base64 string decoding */
StringView.b64ToUint6 = function(nChr) {
return nChr > 64 && nChr < 91
? nChr - 65
: nChr > 96 && nChr < 123
? nChr - 71
: nChr > 47 && nChr < 58
? nChr + 4
: nChr === 43
? 62
: nChr === 47
? 63
: 0;
};
StringView.uint6ToB64 = function(nUint6) {
return nUint6 < 26
? nUint6 + 65
: nUint6 < 52
? nUint6 + 71
: nUint6 < 62
? nUint6 - 4
: nUint6 === 62
? 43
: nUint6 === 63
? 47
: 65;
};
/* Base64 string to array encoding */
StringView.bytesToBase64 = function(aBytes) {
var eqLen = (3 - (aBytes.length % 3)) % 3,
sB64Enc = '';
for (
var nMod3, nLen = aBytes.length, nUint24 = 0, nIdx = 0;
nIdx < nLen;
nIdx++
) {
nMod3 = nIdx % 3;
/* Uncomment the following line in order to split the output in lines 76-character long: */
/*
if (nIdx > 0 && (nIdx * 4 / 3) % 76 === 0) { sB64Enc += "\r\n"; }
*/
nUint24 |= aBytes[nIdx] << ((16 >>> nMod3) & 24);
if (nMod3 === 2 || aBytes.length - nIdx === 1) {
sB64Enc += String.fromCharCode(
StringView.uint6ToB64((nUint24 >>> 18) & 63),
StringView.uint6ToB64((nUint24 >>> 12) & 63),
StringView.uint6ToB64((nUint24 >>> 6) & 63),
StringView.uint6ToB64(nUint24 & 63)
);
nUint24 = 0;
}
}
return eqLen === 0
? sB64Enc
: sB64Enc.substring(0, sB64Enc.length - eqLen) +
(eqLen === 1 ? '=' : '==');
};
StringView.base64ToBytes = function(sBase64, nBlockBytes) {
var sB64Enc = sBase64.replace(/[^A-Za-z0-9\+\/]/g, ''),
nInLen = sB64Enc.length,
nOutLen = nBlockBytes
? Math.ceil(((nInLen * 3 + 1) >>> 2) / nBlockBytes) * nBlockBytes
: (nInLen * 3 + 1) >>> 2,
aBytes = new Uint8Array(nOutLen);
for (
var nMod3, nMod4, nUint24 = 0, nOutIdx = 0, nInIdx = 0;
nInIdx < nInLen;
nInIdx++
) {
nMod4 = nInIdx & 3;
nUint24 |=
StringView.b64ToUint6(sB64Enc.charCodeAt(nInIdx)) <<
(18 - 6 * nMod4);
if (nMod4 === 3 || nInLen - nInIdx === 1) {
for (
nMod3 = 0;
nMod3 < 3 && nOutIdx < nOutLen;
nMod3++, nOutIdx++
) {
aBytes[nOutIdx] = (nUint24 >>> ((16 >>> nMod3) & 24)) & 255;
}
nUint24 = 0;
}
}
return aBytes;
};
StringView.makeFromBase64 = function(
sB64Inpt,
sEncoding,
nByteOffset,
nLength
) {
return new StringView(
sEncoding === 'UTF-16' || sEncoding === 'UTF-32'
? StringView.base64ToBytes(sB64Inpt, sEncoding === 'UTF-16' ? 2 : 4)
.buffer
: StringView.base64ToBytes(sB64Inpt),
sEncoding,
nByteOffset,
nLength
);
};
/* DEFAULT VALUES */
StringView.prototype.encoding = 'UTF-8'; /* Default encoding... */
/* INSTANCES' METHODS */
StringView.prototype.makeIndex = function(nChrLength, nStartFrom) {
var aTarget = this.rawData,
nChrEnd,
nRawLength = aTarget.length,
nStartIdx = nStartFrom || 0,
nIdxEnd = nStartIdx,
nStopAtChr = isNaN(nChrLength) ? Infinity : nChrLength;
if (nChrLength + 1 > aTarget.length) {
throw new RangeError(
"StringView.prototype.makeIndex - The offset can't be major than the length of the array - 1."
);
}
switch (this.encoding) {
case 'UTF-8':
var nPart;
for (
nChrEnd = 0;
nIdxEnd < nRawLength && nChrEnd < nStopAtChr;
nChrEnd++
) {
nPart = aTarget[nIdxEnd];
nIdxEnd +=
nPart > 251 && nPart < 254 && nIdxEnd + 5 < nRawLength
? 6
: nPart > 247 && nPart < 252 && nIdxEnd + 4 < nRawLength
? 5
: nPart > 239 && nPart < 248 && nIdxEnd + 3 < nRawLength
? 4
: nPart > 223 && nPart < 240 && nIdxEnd + 2 < nRawLength
? 3
: nPart > 191 && nPart < 224 && nIdxEnd + 1 < nRawLength
? 2
: 1;
}
break;
case 'UTF-16':
for (
nChrEnd = nStartIdx;
nIdxEnd < nRawLength && nChrEnd < nStopAtChr;
nChrEnd++
) {
nIdxEnd +=
aTarget[nIdxEnd] > 0xd7bf /* 55231 */ &&
nIdxEnd + 1 < aTarget.length
? 2
: 1;
}
break;
default:
nIdxEnd = nChrEnd = isFinite(nChrLength)
? nChrLength
: nRawLength - 1;
}
if (nChrLength) {
return nIdxEnd;
}
return nChrEnd;
};
StringView.prototype.toBase64 = function(bWholeBuffer) {
return StringView.bytesToBase64(
bWholeBuffer
? this.bufferView.constructor === Uint8Array
? this.bufferView
: new Uint8Array(this.buffer)
: this.rawData.constructor === Uint8Array
? this.rawData
: new Uint8Array(
this.buffer,
this.rawData.byteOffset,
this.rawData.length <<
(this.rawData.constructor === Uint16Array ? 1 : 2)
)
);
};
StringView.prototype.subview = function(
nCharOffset /* optional */,
nCharLength /* optional */
) {
var nRawSubLen,
nRawSubOffset,
nSubOffset,
nSubLen,
bVariableLen = this.encoding === 'UTF-8' || this.encoding === 'UTF-16',
nThisLen,
nRawLen = this.rawData.length;
if (nRawLen === 0) {
return new StringView(this.buffer, this.encoding);
}
nThisLen = bVariableLen ? this.makeIndex() : nRawLen;
nSubOffset = nCharOffset
? nCharOffset + 1 > nThisLen
? nThisLen
: Math.max((nThisLen + nCharOffset) % nThisLen, 0)
: 0;
nSubLen = Number.isInteger(nCharLength)
? Math.max(nCharLength, 0) + nSubOffset > nThisLen
? nThisLen - nSubOffset
: nCharLength
: nThisLen - nSubOffset;
if (nSubOffset === 0 && nSubLen === nThisLen) {
return this;
}
if (bVariableLen) {
nRawSubOffset =
nSubOffset < nThisLen ? this.makeIndex(nSubOffset) : nThisLen;
nRawSubLen = nSubLen
? this.makeIndex(nSubLen, nRawSubOffset) - nRawSubOffset
: 0;
} else {
nRawSubOffset = nSubOffset;
nRawSubLen = nSubLen;
}
if (this.encoding === 'UTF-16') {
nRawSubOffset <<= 1;
} else if (this.encoding === 'UTF-32') {
nRawSubOffset <<= 2;
}
return new StringView(
this.buffer,
this.encoding,
this.rawData.byteOffset + nRawSubOffset,
nRawSubLen
);
};
StringView.prototype.forEachChar = function(
fCallback,
oThat,
nChrOffset,
nChrLen
) {
var aSource = this.rawData,
nRawEnd,
nRawIdx;
if (this.encoding === 'UTF-8' || this.encoding === 'UTF-16') {
var fGetInptChrSize, fGetInptChrCode;
if (this.encoding === 'UTF-8') {
fGetInptChrSize = StringView.getUTF8CharLength;
fGetInptChrCode = StringView.loadUTF8CharCode;
} else if (this.encoding === 'UTF-16') {
fGetInptChrSize = StringView.getUTF16CharLength;
fGetInptChrCode = StringView.loadUTF16CharCode;
}
nRawIdx = isFinite(nChrOffset) ? this.makeIndex(nChrOffset) : 0;
nRawEnd = isFinite(nChrLen)
? this.makeIndex(nChrLen, nRawIdx)
: aSource.length;
for (var nChrCode, nChrIdx = 0; nRawIdx < nRawEnd; nChrIdx++) {
nChrCode = fGetInptChrCode(aSource, nRawIdx);
fCallback.call(oThat || null, nChrCode, nChrIdx, nRawIdx, aSource);
nRawIdx += fGetInptChrSize(nChrCode);
}
} else {
nRawIdx = isFinite(nChrOffset) ? nChrOffset : 0;
nRawEnd = isFinite(nChrLen) ? nChrLen + nRawIdx : aSource.length;
for (nRawIdx; nRawIdx < nRawEnd; nRawIdx++) {
fCallback.call(
oThat || null,
aSource[nRawIdx],
nRawIdx,
nRawIdx,
aSource
);
}
}
};
StringView.prototype.valueOf = StringView.prototype.toString = function() {
if (this.encoding !== 'UTF-8' && this.encoding !== 'UTF-16') {
/* ASCII, UTF-32 or BinaryString to DOMString */
return String.fromCharCode.apply(null, this.rawData);
}
var fGetCode,
fGetIncr,
sView = '';
if (this.encoding === 'UTF-8') {
fGetIncr = StringView.getUTF8CharLength;
fGetCode = StringView.loadUTF8CharCode;
} else if (this.encoding === 'UTF-16') {
fGetIncr = StringView.getUTF16CharLength;
fGetCode = StringView.loadUTF16CharCode;
}
for (
var nChr, nLen = this.rawData.length, nIdx = 0;
nIdx < nLen;
nIdx += fGetIncr(nChr)
) {
nChr = fGetCode(this.rawData, nIdx);
sView += String.fromCharCode(nChr);
}
return sView;
};
