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cesium-examples/map/libs/netcdfjs.js

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/**
* netcdfjs - Read and explore NetCDF files
* @version v0.7.0
* @link https://github.com/cheminfo-js/netcdfjs
* @license MIT
*/
(function webpackUniversalModuleDefinition(root, factory) {
if(typeof exports === 'object' && typeof module === 'object')
module.exports = factory();
else if(typeof define === 'function' && define.amd)
define([], factory);
else if(typeof exports === 'object')
exports["netcdfjs"] = factory();
else
root["netcdfjs"] = factory();
})(typeof self !== 'undefined' ? self : this, function() {
return /******/ (function(modules) { // webpackBootstrap
/******/ // The module cache
/******/ var installedModules = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/
/******/ // Check if module is in cache
/******/ if(installedModules[moduleId]) {
/******/ return installedModules[moduleId].exports;
/******/ }
/******/ // Create a new module (and put it into the cache)
/******/ var module = installedModules[moduleId] = {
/******/ i: moduleId,
/******/ l: false,
/******/ exports: {}
/******/ };
/******/
/******/ // Execute the module function
/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ // Flag the module as loaded
/******/ module.l = true;
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/******/
/******/ // expose the modules object (__webpack_modules__)
/******/ __webpack_require__.m = modules;
/******/
/******/ // expose the module cache
/******/ __webpack_require__.c = installedModules;
/******/
/******/ // define getter function for harmony exports
/******/ __webpack_require__.d = function(exports, name, getter) {
/******/ if(!__webpack_require__.o(exports, name)) {
/******/ Object.defineProperty(exports, name, { enumerable: true, get: getter });
/******/ }
/******/ };
/******/
/******/ // define __esModule on exports
/******/ __webpack_require__.r = function(exports) {
/******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
/******/ Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
/******/ }
/******/ Object.defineProperty(exports, '__esModule', { value: true });
/******/ };
/******/
/******/ // create a fake namespace object
/******/ // mode & 1: value is a module id, require it
/******/ // mode & 2: merge all properties of value into the ns
/******/ // mode & 4: return value when already ns object
/******/ // mode & 8|1: behave like require
/******/ __webpack_require__.t = function(value, mode) {
/******/ if(mode & 1) value = __webpack_require__(value);
/******/ if(mode & 8) return value;
/******/ if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
/******/ var ns = Object.create(null);
/******/ __webpack_require__.r(ns);
/******/ Object.defineProperty(ns, 'default', { enumerable: true, value: value });
/******/ if(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));
/******/ return ns;
/******/ };
/******/
/******/ // getDefaultExport function for compatibility with non-harmony modules
/******/ __webpack_require__.n = function(module) {
/******/ var getter = module && module.__esModule ?
/******/ function getDefault() { return module['default']; } :
/******/ function getModuleExports() { return module; };
/******/ __webpack_require__.d(getter, 'a', getter);
/******/ return getter;
/******/ };
/******/
/******/ // Object.prototype.hasOwnProperty.call
/******/ __webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/ // __webpack_public_path__
/******/ __webpack_require__.p = "";
/******/
/******/
/******/ // Load entry module and return exports
/******/ return __webpack_require__(__webpack_require__.s = 3);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
/**
* Throws a non-valid NetCDF exception if the statement it's true
* @ignore
* @param {boolean} statement - Throws if true
* @param {string} reason - Reason to throw
*/
function notNetcdf(statement, reason) {
if (statement) {
throw new TypeError(`Not a valid NetCDF v3.x file: ${reason}`);
}
}
/**
* Moves 1, 2, or 3 bytes to next 4-byte boundary
* @ignore
* @param {IOBuffer} buffer - Buffer for the file data
*/
function padding(buffer) {
if (buffer.offset % 4 !== 0) {
buffer.skip(4 - buffer.offset % 4);
}
}
/**
* Reads the name
* @ignore
* @param {IOBuffer} buffer - Buffer for the file data
* @return {string} - Name
*/
function readName(buffer) {
// Read name
var nameLength = buffer.readUint32();
var name = buffer.readChars(nameLength); // validate name
// TODO
// Apply padding
padding(buffer);
return name;
}
module.exports.notNetcdf = notNetcdf;
module.exports.padding = padding;
module.exports.readName = readName;
/***/ }),
/* 1 */
/***/ (function(module, exports) {
var g; // This works in non-strict mode
g = function () {
return this;
}();
try {
// This works if eval is allowed (see CSP)
g = g || Function("return this")() || (1, eval)("this");
} catch (e) {
// This works if the window reference is available
if (typeof window === "object") g = window;
} // g can still be undefined, but nothing to do about it...
// We return undefined, instead of nothing here, so it's
// easier to handle this case. if(!global) { ...}
module.exports = g;
/***/ }),
/* 2 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
const notNetcdf = __webpack_require__(0).notNetcdf;
const types = {
BYTE: 1,
CHAR: 2,
SHORT: 3,
INT: 4,
FLOAT: 5,
DOUBLE: 6
};
/**
* Parse a number into their respective type
* @ignore
* @param {number} type - integer that represents the type
* @return {string} - parsed value of the type
*/
function num2str(type) {
switch (Number(type)) {
case types.BYTE:
return 'byte';
case types.CHAR:
return 'char';
case types.SHORT:
return 'short';
case types.INT:
return 'int';
case types.FLOAT:
return 'float';
case types.DOUBLE:
return 'double';
/* istanbul ignore next */
default:
return 'undefined';
}
}
/**
* Parse a number type identifier to his size in bytes
* @ignore
* @param {number} type - integer that represents the type
* @return {number} -size of the type
*/
function num2bytes(type) {
switch (Number(type)) {
case types.BYTE:
return 1;
case types.CHAR:
return 1;
case types.SHORT:
return 2;
case types.INT:
return 4;
case types.FLOAT:
return 4;
case types.DOUBLE:
return 8;
/* istanbul ignore next */
default:
return -1;
}
}
/**
* Reverse search of num2str
* @ignore
* @param {string} type - string that represents the type
* @return {number} - parsed value of the type
*/
function str2num(type) {
switch (String(type)) {
case 'byte':
return types.BYTE;
case 'char':
return types.CHAR;
case 'short':
return types.SHORT;
case 'int':
return types.INT;
case 'float':
return types.FLOAT;
case 'double':
return types.DOUBLE;
/* istanbul ignore next */
default:
return -1;
}
}
/**
* Auxiliary function to read numeric data
* @ignore
* @param {number} size - Size of the element to read
* @param {function} bufferReader - Function to read next value
* @return {Array<number>|number}
*/
function readNumber(size, bufferReader) {
if (size !== 1) {
var numbers = new Array(size);
for (var i = 0; i < size; i++) {
numbers[i] = bufferReader();
}
return numbers;
} else {
return bufferReader();
}
}
/**
* Given a type and a size reads the next element
* @ignore
* @param {IOBuffer} buffer - Buffer for the file data
* @param {number} type - Type of the data to read
* @param {number} size - Size of the element to read
* @return {string|Array<number>|number}
*/
function readType(buffer, type, size) {
switch (type) {
case types.BYTE:
return buffer.readBytes(size);
case types.CHAR:
return trimNull(buffer.readChars(size));
case types.SHORT:
return readNumber(size, buffer.readInt16.bind(buffer));
case types.INT:
return readNumber(size, buffer.readInt32.bind(buffer));
case types.FLOAT:
return readNumber(size, buffer.readFloat32.bind(buffer));
case types.DOUBLE:
return readNumber(size, buffer.readFloat64.bind(buffer));
/* istanbul ignore next */
default:
notNetcdf(true, `non valid type ${type}`);
return undefined;
}
}
/**
* Removes null terminate value
* @ignore
* @param {string} value - String to trim
* @return {string} - Trimmed string
*/
function trimNull(value) {
if (value.charCodeAt(value.length - 1) === 0) {
return value.substring(0, value.length - 1);
}
return value;
}
module.exports = types;
module.exports.num2str = num2str;
module.exports.num2bytes = num2bytes;
module.exports.str2num = str2num;
module.exports.readType = readType;
/***/ }),
/* 3 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
const IOBuffer = __webpack_require__(4);
const utils = __webpack_require__(0);
const data = __webpack_require__(11);
const readHeader = __webpack_require__(12);
const toString = __webpack_require__(13);
/**
* Reads a NetCDF v3.x file
* https://www.unidata.ucar.edu/software/netcdf/docs/file_format_specifications.html
* @param {ArrayBuffer} data - ArrayBuffer or any Typed Array (including Node.js' Buffer from v4) with the data
* @constructor
*/
class NetCDFReader {
constructor(data) {
const buffer = new IOBuffer(data);
buffer.setBigEndian(); // Validate that it's a NetCDF file
utils.notNetcdf(buffer.readChars(3) !== 'CDF', 'should start with CDF'); // Check the NetCDF format
const version = buffer.readByte();
utils.notNetcdf(version > 2, 'unknown version'); // Read the header
this.header = readHeader(buffer, version);
this.buffer = buffer;
}
/**
* @return {string} - Version for the NetCDF format
*/
get version() {
if (this.header.version === 1) {
return 'classic format';
} else {
return '64-bit offset format';
}
}
/**
* @return {object} - Metadata for the record dimension
* * `length`: Number of elements in the record dimension
* * `id`: Id number in the list of dimensions for the record dimension
* * `name`: String with the name of the record dimension
* * `recordStep`: Number with the record variables step size
*/
get recordDimension() {
return this.header.recordDimension;
}
/**
* @return {Array<object>} - List of dimensions with:
* * `name`: String with the name of the dimension
* * `size`: Number with the size of the dimension
*/
get dimensions() {
return this.header.dimensions;
}
/**
* @return {Array<object>} - List of global attributes with:
* * `name`: String with the name of the attribute
* * `type`: String with the type of the attribute
* * `value`: A number or string with the value of the attribute
*/
get globalAttributes() {
return this.header.globalAttributes;
}
/**
* Returns the value of an attribute
* @param {string} attributeName
* @return {string} Value of the attributeName or undefined
*/
getAttribute(attributeName) {
let attribute = this.globalAttributes.find(val => val.name === attributeName);
if (attribute) return attribute.value.trim();
return undefined;
}
/**
* Returns the value of a variable as a string
* @param {string} variableName
* @return {string} Value of the variable as a string or undefined
*/
getDataVariableAsString(variableName) {
try {
return this.getDataVariable(variableName).join('').trim();
} catch (e) {
return undefined;
}
}
/**
* @return {Array<object>} - List of variables with:
* * `name`: String with the name of the variable
* * `dimensions`: Array with the dimension IDs of the variable
* * `attributes`: Array with the attributes of the variable
* * `type`: String with the type of the variable
* * `size`: Number with the size of the variable
* * `offset`: Number with the offset where of the variable begins
* * `record`: True if is a record variable, false otherwise
*/
get variables() {
return this.header.variables;
}
toString() {
return toString.call(this);
}
/**
* Retrieves the data for a given variable
* @param {string|object} variableName - Name of the variable to search or variable object
* @return {Array} - List with the variable values
*/
getDataVariable(variableName) {
var variable;
if (typeof variableName === 'string') {
// search the variable
variable = this.header.variables.find(function (val) {
return val.name === variableName;
});
} else {
variable = variableName;
} // throws if variable not found
utils.notNetcdf(variable === undefined, `variable not found: ${variableName}`); // go to the offset position
this.buffer.seek(variable.offset);
if (variable.record) {
// record variable case
return data.record(this.buffer, variable, this.header.recordDimension);
} else {
// non-record variable case
return data.nonRecord(this.buffer, variable);
}
}
/**
* Check if a dataVariable exists
* @param {string} variableName - Name of the variable to find
* @return {boolean}
*/
dataVariableExists(variableName) {
let variable = this.header.variables.find(function (val) {
return val.name === variableName;
});
return variable !== undefined;
}
/**
* Check if an attribute exists
* @param {string} attributeName - Name of the attribute to find
* @return {boolean}
*/
attributeExists(attributeName) {
let attribute = this.globalAttributes.find(val => val.name === attributeName);
return attribute !== undefined;
}
}
module.exports = NetCDFReader;
/***/ }),
/* 4 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
/* WEBPACK VAR INJECTION */(function(Buffer) {
const utf8 = __webpack_require__(9);
const defaultByteLength = 1024 * 8;
const charArray = [];
/**
* IOBuffer
* @constructor
* @param {undefined|number|ArrayBuffer|TypedArray|IOBuffer|Buffer} data - The data to construct the IOBuffer with.
*
* If it's a number, it will initialize the buffer with the number as the buffer's length<br>
* If it's undefined, it will initialize the buffer with a default length of 8 Kb<br>
* If its an ArrayBuffer, a TypedArray, an IOBuffer instance,
* or a Node.js Buffer, it will create a view over the underlying ArrayBuffer.
* @param {object} [options]
* @param {number} [options.offset=0] - Ignore the first n bytes of the ArrayBuffer
* @property {ArrayBuffer} buffer - Reference to the internal ArrayBuffer object
* @property {number} length - Byte length of the internal ArrayBuffer
* @property {number} offset - The current offset of the buffer's pointer
* @property {number} byteLength - Byte length of the internal ArrayBuffer
* @property {number} byteOffset - Byte offset of the internal ArrayBuffer
*/
class IOBuffer {
constructor(data, options) {
options = options || {};
var dataIsGiven = false;
if (data === undefined) {
data = defaultByteLength;
}
if (typeof data === 'number') {
data = new ArrayBuffer(data);
} else {
dataIsGiven = true;
this._lastWrittenByte = data.byteLength;
}
const offset = options.offset ? options.offset >>> 0 : 0;
let byteLength = data.byteLength - offset;
let dvOffset = offset;
if (data.buffer) {
if (data.byteLength !== data.buffer.byteLength) {
dvOffset = data.byteOffset + offset;
}
data = data.buffer;
}
if (dataIsGiven) {
this._lastWrittenByte = byteLength;
} else {
this._lastWrittenByte = 0;
}
this.buffer = data;
this.length = byteLength;
this.byteLength = byteLength;
this.byteOffset = dvOffset;
this.offset = 0;
this.littleEndian = true;
this._data = new DataView(this.buffer, dvOffset, byteLength);
this._mark = 0;
this._marks = [];
}
/**
* Checks if the memory allocated to the buffer is sufficient to store more bytes after the offset
* @param {number} [byteLength=1] The needed memory in bytes
* @return {boolean} Returns true if there is sufficient space and false otherwise
*/
available(byteLength) {
if (byteLength === undefined) byteLength = 1;
return this.offset + byteLength <= this.length;
}
/**
* Check if little-endian mode is used for reading and writing multi-byte values
* @return {boolean} Returns true if little-endian mode is used, false otherwise
*/
isLittleEndian() {
return this.littleEndian;
}
/**
* Set little-endian mode for reading and writing multi-byte values
* @return {IOBuffer}
*/
setLittleEndian() {
this.littleEndian = true;
return this;
}
/**
* Check if big-endian mode is used for reading and writing multi-byte values
* @return {boolean} Returns true if big-endian mode is used, false otherwise
*/
isBigEndian() {
return !this.littleEndian;
}
/**
* Switches to big-endian mode for reading and writing multi-byte values
* @return {IOBuffer}
*/
setBigEndian() {
this.littleEndian = false;
return this;
}
/**
* Move the pointer n bytes forward
* @param {number} n
* @return {IOBuffer}
*/
skip(n) {
if (n === undefined) n = 1;
this.offset += n;
return this;
}
/**
* Move the pointer to the given offset
* @param {number} offset
* @return {IOBuffer}
*/
seek(offset) {
this.offset = offset;
return this;
}
/**
* Store the current pointer offset.
* @see {@link IOBuffer#reset}
* @return {IOBuffer}
*/
mark() {
this._mark = this.offset;
return this;
}
/**
* Move the pointer back to the last pointer offset set by mark
* @see {@link IOBuffer#mark}
* @return {IOBuffer}
*/
reset() {
this.offset = this._mark;
return this;
}
/**
* Push the current pointer offset to the mark stack
* @see {@link IOBuffer#popMark}
* @return {IOBuffer}
*/
pushMark() {
this._marks.push(this.offset);
return this;
}
/**
* Pop the last pointer offset from the mark stack, and set the current pointer offset to the popped value
* @see {@link IOBuffer#pushMark}
* @return {IOBuffer}
*/
popMark() {
const offset = this._marks.pop();
if (offset === undefined) throw new Error('Mark stack empty');
this.seek(offset);
return this;
}
/**
* Move the pointer offset back to 0
* @return {IOBuffer}
*/
rewind() {
this.offset = 0;
return this;
}
/**
* Make sure the buffer has sufficient memory to write a given byteLength at the current pointer offset
* If the buffer's memory is insufficient, this method will create a new buffer (a copy) with a length
* that is twice (byteLength + current offset)
* @param {number} [byteLength = 1]
* @return {IOBuffer}
*/
ensureAvailable(byteLength) {
if (byteLength === undefined) byteLength = 1;
if (!this.available(byteLength)) {
const lengthNeeded = this.offset + byteLength;
const newLength = lengthNeeded * 2;
const newArray = new Uint8Array(newLength);
newArray.set(new Uint8Array(this.buffer));
this.buffer = newArray.buffer;
this.length = this.byteLength = newLength;
this._data = new DataView(this.buffer);
}
return this;
}
/**
* Read a byte and return false if the byte's value is 0, or true otherwise
* Moves pointer forward
* @return {boolean}
*/
readBoolean() {
return this.readUint8() !== 0;
}
/**
* Read a signed 8-bit integer and move pointer forward
* @return {number}
*/
readInt8() {
return this._data.getInt8(this.offset++);
}
/**
* Read an unsigned 8-bit integer and move pointer forward
* @return {number}
*/
readUint8() {
return this._data.getUint8(this.offset++);
}
/**
* Alias for {@link IOBuffer#readUint8}
* @return {number}
*/
readByte() {
return this.readUint8();
}
/**
* Read n bytes and move pointer forward.
* @param {number} n
* @return {Uint8Array}
*/
readBytes(n) {
if (n === undefined) n = 1;
var bytes = new Uint8Array(n);
for (var i = 0; i < n; i++) {
bytes[i] = this.readByte();
}
return bytes;
}
/**
* Read a 16-bit signed integer and move pointer forward
* @return {number}
*/
readInt16() {
var value = this._data.getInt16(this.offset, this.littleEndian);
this.offset += 2;
return value;
}
/**
* Read a 16-bit unsigned integer and move pointer forward
* @return {number}
*/
readUint16() {
var value = this._data.getUint16(this.offset, this.littleEndian);
this.offset += 2;
return value;
}
/**
* Read a 32-bit signed integer and move pointer forward
* @return {number}
*/
readInt32() {
var value = this._data.getInt32(this.offset, this.littleEndian);
this.offset += 4;
return value;
}
/**
* Read a 32-bit unsigned integer and move pointer forward
* @return {number}
*/
readUint32() {
var value = this._data.getUint32(this.offset, this.littleEndian);
this.offset += 4;
return value;
}
/**
* Read a 32-bit floating number and move pointer forward
* @return {number}
*/
readFloat32() {
var value = this._data.getFloat32(this.offset, this.littleEndian);
this.offset += 4;
return value;
}
/**
* Read a 64-bit floating number and move pointer forward
* @return {number}
*/
readFloat64() {
var value = this._data.getFloat64(this.offset, this.littleEndian);
this.offset += 8;
return value;
}
/**
* Read 1-byte ascii character and move pointer forward
* @return {string}
*/
readChar() {
return String.fromCharCode(this.readInt8());
}
/**
* Read n 1-byte ascii characters and move pointer forward
* @param {number} n
* @return {string}
*/
readChars(n) {
if (n === undefined) n = 1;
charArray.length = n;
for (var i = 0; i < n; i++) {
charArray[i] = this.readChar();
}
return charArray.join('');
}
/**
* Read the next n bytes, return a UTF-8 decoded string and move pointer forward
* @param {number} n
* @return {string}
*/
readUtf8(n) {
if (n === undefined) n = 1;
const bString = this.readChars(n);
return utf8.decode(bString);
}
/**
* Write 0xff if the passed value is truthy, 0x00 otherwise
* @param {any} value
* @return {IOBuffer}
*/
writeBoolean(value) {
this.writeUint8(value ? 0xff : 0x00);
return this;
}
/**
* Write value as an 8-bit signed integer
* @param {number} value
* @return {IOBuffer}
*/
writeInt8(value) {
this.ensureAvailable(1);
this._data.setInt8(this.offset++, value);
this._updateLastWrittenByte();
return this;
}
/**
* Write value as a 8-bit unsigned integer
* @param {number} value
* @return {IOBuffer}
*/
writeUint8(value) {
this.ensureAvailable(1);
this._data.setUint8(this.offset++, value);
this._updateLastWrittenByte();
return this;
}
/**
* An alias for {@link IOBuffer#writeUint8}
* @param {number} value
* @return {IOBuffer}
*/
writeByte(value) {
return this.writeUint8(value);
}
/**
* Write bytes
* @param {Array|Uint8Array} bytes
* @return {IOBuffer}
*/
writeBytes(bytes) {
this.ensureAvailable(bytes.length);
for (var i = 0; i < bytes.length; i++) {
this._data.setUint8(this.offset++, bytes[i]);
}
this._updateLastWrittenByte();
return this;
}
/**
* Write value as an 16-bit signed integer
* @param {number} value
* @return {IOBuffer}
*/
writeInt16(value) {
this.ensureAvailable(2);
this._data.setInt16(this.offset, value, this.littleEndian);
this.offset += 2;
this._updateLastWrittenByte();
return this;
}
/**
* Write value as a 16-bit unsigned integer
* @param {number} value
* @return {IOBuffer}
*/
writeUint16(value) {
this.ensureAvailable(2);
this._data.setUint16(this.offset, value, this.littleEndian);
this.offset += 2;
this._updateLastWrittenByte();
return this;
}
/**
* Write a 32-bit signed integer at the current pointer offset
* @param {number} value
* @return {IOBuffer}
*/
writeInt32(value) {
this.ensureAvailable(4);
this._data.setInt32(this.offset, value, this.littleEndian);
this.offset += 4;
this._updateLastWrittenByte();
return this;
}
/**
* Write a 32-bit unsigned integer at the current pointer offset
* @param {number} value - The value to set
* @return {IOBuffer}
*/
writeUint32(value) {
this.ensureAvailable(4);
this._data.setUint32(this.offset, value, this.littleEndian);
this.offset += 4;
this._updateLastWrittenByte();
return this;
}
/**
* Write a 32-bit floating number at the current pointer offset
* @param {number} value - The value to set
* @return {IOBuffer}
*/
writeFloat32(value) {
this.ensureAvailable(4);
this._data.setFloat32(this.offset, value, this.littleEndian);
this.offset += 4;
this._updateLastWrittenByte();
return this;
}
/**
* Write a 64-bit floating number at the current pointer offset
* @param {number} value
* @return {IOBuffer}
*/
writeFloat64(value) {
this.ensureAvailable(8);
this._data.setFloat64(this.offset, value, this.littleEndian);
this.offset += 8;
this._updateLastWrittenByte();
return this;
}
/**
* Write the charCode of the passed string's first character to the current pointer offset
* @param {string} str - The character to set
* @return {IOBuffer}
*/
writeChar(str) {
return this.writeUint8(str.charCodeAt(0));
}
/**
* Write the charCodes of the passed string's characters to the current pointer offset
* @param {string} str
* @return {IOBuffer}
*/
writeChars(str) {
for (var i = 0; i < str.length; i++) {
this.writeUint8(str.charCodeAt(i));
}
return this;
}
/**
* UTF-8 encode and write the passed string to the current pointer offset
* @param {string} str
* @return {IOBuffer}
*/
writeUtf8(str) {
const bString = utf8.encode(str);
return this.writeChars(bString);
}
/**
* Export a Uint8Array view of the internal buffer.
* The view starts at the byte offset and its length
* is calculated to stop at the last written byte or the original length.
* @return {Uint8Array}
*/
toArray() {
return new Uint8Array(this.buffer, this.byteOffset, this._lastWrittenByte);
}
/**
* Same as {@link IOBuffer#toArray} but returns a Buffer if possible. Otherwise returns a Uint8Array.
* @return {Buffer|Uint8Array}
*/
getBuffer() {
if (typeof Buffer !== 'undefined') {
return Buffer.from(this.toArray());
} else {
return this.toArray();
}
}
/**
* Update the last written byte offset
* @private
*/
_updateLastWrittenByte() {
if (this.offset > this._lastWrittenByte) {
this._lastWrittenByte = this.offset;
}
}
}
module.exports = IOBuffer;
/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(5).Buffer))
/***/ }),
/* 5 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
/* WEBPACK VAR INJECTION */(function(global) {/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
* @license MIT
*/
/* eslint-disable no-proto */
var base64 = __webpack_require__(6);
var ieee754 = __webpack_require__(7);
var isArray = __webpack_require__(8);
exports.Buffer = Buffer;
exports.SlowBuffer = SlowBuffer;
exports.INSPECT_MAX_BYTES = 50;
/**
* 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+.
*
* Due to various browser bugs, sometimes the Object implementation will be used even
* when the browser supports typed arrays.
*
* Note:
*
* - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
* 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
* get the Object implementation, which is slower but behaves correctly.
*/
Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined ? global.TYPED_ARRAY_SUPPORT : typedArraySupport();
/*
* Export kMaxLength after typed array support is determined.
*/
exports.kMaxLength = kMaxLength();
function typedArraySupport() {
try {
var arr = new Uint8Array(1);
arr.__proto__ = {
__proto__: Uint8Array.prototype,
foo: function foo() {
return 42;
}
};
return arr.foo() === 42 && // typed array instances can be augmented
typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
arr.subarray(1, 1).byteLength === 0; // ie10 has broken `subarray`
} catch (e) {
return false;
}
}
function kMaxLength() {
return Buffer.TYPED_ARRAY_SUPPORT ? 0x7fffffff : 0x3fffffff;
}
function createBuffer(that, length) {
if (kMaxLength() < length) {
throw new RangeError('Invalid typed array length');
}
if (Buffer.TYPED_ARRAY_SUPPORT) {
// Return an augmented `Uint8Array` instance, for best performance
that = new Uint8Array(length);
that.__proto__ = Buffer.prototype;
} else {
// Fallback: Return an object instance of the Buffer class
if (that === null) {
that = new Buffer(length);
}
that.length = length;
}
return that;
}
/**
* The Buffer constructor returns instances of `Uint8Array` that have their
* prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
* `Uint8Array`, so the returned instances will have all the node `Buffer` methods
* and the `Uint8Array` methods. Square bracket notation works as expected -- it
* returns a single octet.
*
* The `Uint8Array` prototype remains unmodified.
*/
function Buffer(arg, encodingOrOffset, length) {
if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
return new Buffer(arg, encodingOrOffset, length);
} // Common case.
if (typeof arg === 'number') {
if (typeof encodingOrOffset === 'string') {
throw new Error('If encoding is specified then the first argument must be a string');
}
return allocUnsafe(this, arg);
}
return from(this, arg, encodingOrOffset, length);
}
Buffer.poolSize = 8192; // not used by this implementation
// TODO: Legacy, not needed anymore. Remove in next major version.
Buffer._augment = function (arr) {
arr.__proto__ = Buffer.prototype;
return arr;
};
function from(that, value, encodingOrOffset, length) {
if (typeof value === 'number') {
throw new TypeError('"value" argument must not be a number');
}
if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
return fromArrayBuffer(that, value, encodingOrOffset, length);
}
if (typeof value === 'string') {
return fromString(that, value, encodingOrOffset);
}
return fromObject(that, value);
}
/**
* Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
* if value is a number.
* Buffer.from(str[, encoding])
* Buffer.from(array)
* Buffer.from(buffer)
* Buffer.from(arrayBuffer[, byteOffset[, length]])
**/
Buffer.from = function (value, encodingOrOffset, length) {
return from(null, value, encodingOrOffset, length);
};
if (Buffer.TYPED_ARRAY_SUPPORT) {
Buffer.prototype.__proto__ = Uint8Array.prototype;
Buffer.__proto__ = Uint8Array;
if (typeof Symbol !== 'undefined' && Symbol.species && Buffer[Symbol.species] === Buffer) {
// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
Object.defineProperty(Buffer, Symbol.species, {
value: null,
configurable: true
});
}
}
function assertSize(size) {
if (typeof size !== 'number') {
throw new TypeError('"size" argument must be a number');
} else if (size < 0) {
throw new RangeError('"size" argument must not be negative');
}
}
function alloc(that, size, fill, encoding) {
assertSize(size);
if (size <= 0) {
return createBuffer(that, size);
}
if (fill !== undefined) {
// Only pay attention to encoding if it's a string. This
// prevents accidentally sending in a number that would
// be interpretted as a start offset.
return typeof encoding === 'string' ? createBuffer(that, size).fill(fill, encoding) : createBuffer(that, size).fill(fill);
}
return createBuffer(that, size);
}
/**
* Creates a new filled Buffer instance.
* alloc(size[, fill[, encoding]])
**/
Buffer.alloc = function (size, fill, encoding) {
return alloc(null, size, fill, encoding);
};
function allocUnsafe(that, size) {
assertSize(size);
that = createBuffer(that, size < 0 ? 0 : checked(size) | 0);
if (!Buffer.TYPED_ARRAY_SUPPORT) {
for (var i = 0; i < size; ++i) {
that[i] = 0;
}
}
return that;
}
/**
* Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
* */
Buffer.allocUnsafe = function (size) {
return allocUnsafe(null, size);
};
/**
* Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
*/
Buffer.allocUnsafeSlow = function (size) {
return allocUnsafe(null, size);
};
function fromString(that, string, encoding) {
if (typeof encoding !== 'string' || encoding === '') {
encoding = 'utf8';
}
if (!Buffer.isEncoding(encoding)) {
throw new TypeError('"encoding" must be a valid string encoding');
}
var length = byteLength(string, encoding) | 0;
that = createBuffer(that, length);
var actual = that.write(string, encoding);
if (actual !== length) {
// Writing a hex string, for example, that contains invalid characters will
// cause everything after the first invalid character to be ignored. (e.g.
// 'abxxcd' will be treated as 'ab')
that = that.slice(0, actual);
}
return that;
}
function fromArrayLike(that, array) {
var length = array.length < 0 ? 0 : checked(array.length) | 0;
that = createBuffer(that, length);
for (var i = 0; i < length; i += 1) {
that[i] = array[i] & 255;
}
return that;
}
function fromArrayBuffer(that, array, byteOffset, length) {
array.byteLength; // this throws if `array` is not a valid ArrayBuffer
if (byteOffset < 0 || array.byteLength < byteOffset) {
throw new RangeError('\'offset\' is out of bounds');
}
if (array.byteLength < byteOffset + (length || 0)) {
throw new RangeError('\'length\' is out of bounds');
}
if (byteOffset === undefined && length === undefined) {
array = new Uint8Array(array);
} else if (length === undefined) {
array = new Uint8Array(array, byteOffset);
} else {
array = new Uint8Array(array, byteOffset, length);
}
if (Buffer.TYPED_ARRAY_SUPPORT) {
// Return an augmented `Uint8Array` instance, for best performance
that = array;
that.__proto__ = Buffer.prototype;
} else {
// Fallback: Return an object instance of the Buffer class
that = fromArrayLike(that, array);
}
return that;
}
function fromObject(that, obj) {
if (Buffer.isBuffer(obj)) {
var len = checked(obj.length) | 0;
that = createBuffer(that, len);
if (that.length === 0) {
return that;
}
obj.copy(that, 0, 0, len);
return that;
}
if (obj) {
if (typeof ArrayBuffer !== 'undefined' && obj.buffer instanceof ArrayBuffer || 'length' in obj) {
if (typeof obj.length !== 'number' || isnan(obj.length)) {
return createBuffer(that, 0);
}
return fromArrayLike(that, obj);
}
if (obj.type === 'Buffer' && isArray(obj.data)) {
return fromArrayLike(that, obj.data);
}
}
throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.');
}
function checked(length) {
// Note: cannot use `length < kMaxLength()` here because that fails when
// length is NaN (which is otherwise coerced to zero.)
if (length >= kMaxLength()) {
throw new RangeError('Attempt to allocate Buffer larger than maximum ' + 'size: 0x' + kMaxLength().toString(16) + ' bytes');
}
return length | 0;
}
function SlowBuffer(length) {
if (+length != length) {
// eslint-disable-line eqeqeq
length = 0;
}
return Buffer.alloc(+length);
}
Buffer.isBuffer = function isBuffer(b) {
return !!(b != null && b._isBuffer);
};
Buffer.compare = function compare(a, b) {
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
throw new TypeError('Arguments must be Buffers');
}
if (a === b) return 0;
var x = a.length;
var y = b.length;
for (var i = 0, len = Math.min(x, y); i < len; ++i) {
if (a[i] !== b[i]) {
x = a[i];
y = b[i];
break;
}
}
if (x < y) return -1;
if (y < x) return 1;
return 0;
};
Buffer.isEncoding = function isEncoding(encoding) {
switch (String(encoding).toLowerCase()) {
case 'hex':
case 'utf8':
case 'utf-8':
case 'ascii':
case 'latin1':
case 'binary':
case 'base64':
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return true;
default:
return false;
}
};
Buffer.concat = function concat(list, length) {
if (!isArray(list)) {
throw new TypeError('"list" argument must be an Array of Buffers');
}
if (list.length === 0) {
return Buffer.alloc(0);
}
var i;
if (length === undefined) {
length = 0;
for (i = 0; i < list.length; ++i) {
length += list[i].length;
}
}
var buffer = Buffer.allocUnsafe(length);
var pos = 0;
for (i = 0; i < list.length; ++i) {
var buf = list[i];
if (!Buffer.isBuffer(buf)) {
throw new TypeError('"list" argument must be an Array of Buffers');
}
buf.copy(buffer, pos);
pos += buf.length;
}
return buffer;
};
function byteLength(string, encoding) {
if (Buffer.isBuffer(string)) {
return string.length;
}
if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' && (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
return string.byteLength;
}
if (typeof string !== 'string') {
string = '' + string;
}
var len = string.length;
if (len === 0) return 0; // Use a for loop to avoid recursion
var loweredCase = false;
for (;;) {
switch (encoding) {
case 'ascii':
case 'latin1':
case 'binary':
return len;
case 'utf8':
case 'utf-8':
case undefined:
return utf8ToBytes(string).length;
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return len * 2;
case 'hex':
return len >>> 1;
case 'base64':
return base64ToBytes(string).length;
default:
if (loweredCase) return utf8ToBytes(string).length; // assume utf8
encoding = ('' + encoding).toLowerCase();
loweredCase = true;
}
}
}
Buffer.byteLength = byteLength;
function slowToString(encoding, start, end) {
var loweredCase = false; // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
// property of a typed array.
// This behaves neither like String nor Uint8Array in that we set start/end
// to their upper/lower bounds if the value passed is out of range.
// undefined is handled specially as per ECMA-262 6th Edition,
// Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
if (start === undefined || start < 0) {
start = 0;
} // Return early if start > this.length. Done here to prevent potential uint32
// coercion fail below.
if (start > this.length) {
return '';
}
if (end === undefined || end > this.length) {
end = this.length;
}
if (end <= 0) {
return '';
} // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
end >>>= 0;
start >>>= 0;
if (end <= start) {
return '';
}
if (!encoding) encoding = 'utf8';
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 'latin1':
case 'binary':
return latin1Slice(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;
}
}
} // The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
// Buffer instances.
Buffer.prototype._isBuffer = true;
function swap(b, n, m) {
var i = b[n];
b[n] = b[m];
b[m] = i;
}
Buffer.prototype.swap16 = function swap16() {
var len = this.length;
if (len % 2 !== 0) {
throw new RangeError('Buffer size must be a multiple of 16-bits');
}
for (var i = 0; i < len; i += 2) {
swap(this, i, i + 1);
}
return this;
};
Buffer.prototype.swap32 = function swap32() {
var len = this.length;
if (len % 4 !== 0) {
throw new RangeError('Buffer size must be a multiple of 32-bits');
}
for (var i = 0; i < len; i += 4) {
swap(this, i, i + 3);
swap(this, i + 1, i + 2);
}
return this;
};
Buffer.prototype.swap64 = function swap64() {
var len = this.length;
if (len % 8 !== 0) {
throw new RangeError('Buffer size must be a multiple of 64-bits');
}
for (var i = 0; i < len; i += 8) {
swap(this, i, i + 7);
swap(this, i + 1, i + 6);
swap(this, i + 2, i + 5);
swap(this, i + 3, i + 4);
}
return this;
};
Buffer.prototype.toString = function toString() {
var length = this.length | 0;
if (length === 0) return '';
if (arguments.length === 0) return utf8Slice(this, 0, length);
return slowToString.apply(this, arguments);
};
Buffer.prototype.equals = function equals(b) {
if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer');
if (this === b) return true;
return Buffer.compare(this, b) === 0;
};
Buffer.prototype.inspect = function inspect() {
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 compare(target, start, end, thisStart, thisEnd) {
if (!Buffer.isBuffer(target)) {
throw new TypeError('Argument must be a Buffer');
}
if (start === undefined) {
start = 0;
}
if (end === undefined) {
end = target ? target.length : 0;
}
if (thisStart === undefined) {
thisStart = 0;
}
if (thisEnd === undefined) {
thisEnd = this.length;
}
if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
throw new RangeError('out of range index');
}
if (thisStart >= thisEnd && start >= end) {
return 0;
}
if (thisStart >= thisEnd) {
return -1;
}
if (start >= end) {
return 1;
}
start >>>= 0;
end >>>= 0;
thisStart >>>= 0;
thisEnd >>>= 0;
if (this === target) return 0;
var x = thisEnd - thisStart;
var y = end - start;
var len = Math.min(x, y);
var thisCopy = this.slice(thisStart, thisEnd);
var targetCopy = target.slice(start, end);
for (var i = 0; i < len; ++i) {
if (thisCopy[i] !== targetCopy[i]) {
x = thisCopy[i];
y = targetCopy[i];
break;
}
}
if (x < y) return -1;
if (y < x) return 1;
return 0;
}; // Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf(buffer, val, byteOffset, encoding, dir) {
// Empty buffer means no match
if (buffer.length === 0) return -1; // Normalize byteOffset
if (typeof byteOffset === 'string') {
encoding = byteOffset;
byteOffset = 0;
} else if (byteOffset > 0x7fffffff) {
byteOffset = 0x7fffffff;
} else if (byteOffset < -0x80000000) {
byteOffset = -0x80000000;
}
byteOffset = +byteOffset; // Coerce to Number.
if (isNaN(byteOffset)) {
// byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
byteOffset = dir ? 0 : buffer.length - 1;
} // Normalize byteOffset: negative offsets start from the end of the buffer
if (byteOffset < 0) byteOffset = buffer.length + byteOffset;
if (byteOffset >= buffer.length) {
if (dir) return -1;else byteOffset = buffer.length - 1;
} else if (byteOffset < 0) {
if (dir) byteOffset = 0;else return -1;
} // Normalize val
if (typeof val === 'string') {
val = Buffer.from(val, encoding);
} // Finally, search either indexOf (if dir is true) or lastIndexOf
if (Buffer.isBuffer(val)) {
// Special case: looking for empty string/buffer always fails
if (val.length === 0) {
return -1;
}
return arrayIndexOf(buffer, val, byteOffset, encoding, dir);
} else if (typeof val === 'number') {
val = val & 0xFF; // Search for a byte value [0-255]
if (Buffer.TYPED_ARRAY_SUPPORT && typeof Uint8Array.prototype.indexOf === 'function') {
if (dir) {
return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset);
} else {
return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset);
}
}
return arrayIndexOf(buffer, [val], byteOffset, encoding, dir);
}
throw new TypeError('val must be string, number or Buffer');
}
function arrayIndexOf(arr, val, byteOffset, encoding, dir) {
var indexSize = 1;
var arrLength = arr.length;
var valLength = val.length;
if (encoding !== undefined) {
encoding = String(encoding).toLowerCase();
if (encoding === 'ucs2' || encoding === 'ucs-2' || encoding === 'utf16le' || encoding === 'utf-16le') {
if (arr.length < 2 || val.length < 2) {
return -1;
}
indexSize = 2;
arrLength /= 2;
valLength /= 2;
byteOffset /= 2;
}
}
function read(buf, i) {
if (indexSize === 1) {
return buf[i];
} else {
return buf.readUInt16BE(i * indexSize);
}
}
var i;
if (dir) {
var foundIndex = -1;
for (i = byteOffset; i < arrLength; i++) {
if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
if (foundIndex === -1) foundIndex = i;
if (i - foundIndex + 1 === valLength) return foundIndex * indexSize;
} else {
if (foundIndex !== -1) i -= i - foundIndex;
foundIndex = -1;
}
}
} else {
if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength;
for (i = byteOffset; i >= 0; i--) {
var found = true;
for (var j = 0; j < valLength; j++) {
if (read(arr, i + j) !== read(val, j)) {
found = false;
break;
}
}
if (found) return i;
}
}
return -1;
}
Buffer.prototype.includes = function includes(val, byteOffset, encoding) {
return this.indexOf(val, byteOffset, encoding) !== -1;
};
Buffer.prototype.indexOf = function indexOf(val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, true);
};
Buffer.prototype.lastIndexOf = function lastIndexOf(val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, false);
};
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 TypeError('Invalid hex string');
if (length > strLen / 2) {
length = strLen / 2;
}
for (var i = 0; i < length; ++i) {
var parsed = parseInt(string.substr(i * 2, 2), 16);
if (isNaN(parsed)) return i;
buf[offset + i] = parsed;
}
return i;
}
function utf8Write(buf, string, offset, length) {
return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length);
}
function asciiWrite(buf, string, offset, length) {
return blitBuffer(asciiToBytes(string), buf, offset, length);
}
function latin1Write(buf, string, offset, length) {
return asciiWrite(buf, string, offset, length);
}
function base64Write(buf, string, offset, length) {
return blitBuffer(base64ToBytes(string), buf, offset, length);
}
function ucs2Write(buf, string, offset, length) {
return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length);
}
Buffer.prototype.write = function write(string, offset, length, encoding) {
// Buffer#write(string)
if (offset === undefined) {
encoding = 'utf8';
length = this.length;
offset = 0; // Buffer#write(string, encoding)
} else if (length === undefined && typeof offset === 'string') {
encoding = offset;
length = this.length;
offset = 0; // Buffer#write(string, offset[, length][, encoding])
} else if (isFinite(offset)) {
offset = offset | 0;
if (isFinite(length)) {
length = length | 0;
if (encoding === undefined) encoding = 'utf8';
} else {
encoding = length;
length = undefined;
} // legacy write(string, encoding, offset, length) - remove in v0.13
} else {
throw new Error('Buffer.write(string, encoding, offset[, length]) is no longer supported');
}
var remaining = this.length - offset;
if (length === undefined || length > remaining) length = remaining;
if (string.length > 0 && (length < 0 || offset < 0) || offset > this.length) {
throw new RangeError('Attempt to write outside buffer bounds');
}
if (!encoding) encoding = 'utf8';
var loweredCase = false;
for (;;) {
switch (encoding) {
case 'hex':
return hexWrite(this, string, offset, length);
case 'utf8':
case 'utf-8':
return utf8Write(this, string, offset, length);
case 'ascii':
return asciiWrite(this, string, offset, length);
case 'latin1':
case 'binary':
return latin1Write(this, string, offset, length);
case 'base64':
// Warning: maxLength not taken into account in base64Write
return base64Write(this, string, offset, length);
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return ucs2Write(this, string, offset, length);
default:
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding);
encoding = ('' + encoding).toLowerCase();
loweredCase = true;
}
}
};
Buffer.prototype.toJSON = function toJSON() {
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) {
end = Math.min(buf.length, end);
var res = [];
var i = start;
while (i < end) {
var firstByte = buf[i];
var codePoint = null;
var bytesPerSequence = firstByte > 0xEF ? 4 : firstByte > 0xDF ? 3 : firstByte > 0xBF ? 2 : 1;
if (i + bytesPerSequence <= end) {
var secondByte, thirdByte, fourthByte, tempCodePoint;
switch (bytesPerSequence) {
case 1:
if (firstByte < 0x80) {
codePoint = firstByte;
}
break;
case 2:
secondByte = buf[i + 1];
if ((secondByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0x1F) << 0x6 | secondByte & 0x3F;
if (tempCodePoint > 0x7F) {
codePoint = tempCodePoint;
}
}
break;
case 3:
secondByte = buf[i + 1];
thirdByte = buf[i + 2];
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | thirdByte & 0x3F;
if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
codePoint = tempCodePoint;
}
}
break;
case 4:
secondByte = buf[i + 1];
thirdByte = buf[i + 2];
fourthByte = buf[i + 3];
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | fourthByte & 0x3F;
if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
codePoint = tempCodePoint;
}
}
}
}
if (codePoint === null) {
// we did not generate a valid codePoint so insert a
// replacement char (U+FFFD) and advance only 1 byte
codePoint = 0xFFFD;
bytesPerSequence = 1;
} else if (codePoint > 0xFFFF) {
// encode to utf16 (surrogate pair dance)
codePoint -= 0x10000;
res.push(codePoint >>> 10 & 0x3FF | 0xD800);
codePoint = 0xDC00 | codePoint & 0x3FF;
}
res.push(codePoint);
i += bytesPerSequence;
}
return decodeCodePointsArray(res);
} // Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000;
function decodeCodePointsArray(codePoints) {
var len = codePoints.length;
if (len <= MAX_ARGUMENTS_LENGTH) {
return String.fromCharCode.apply(String, codePoints); // avoid extra slice()
} // Decode in chunks to avoid "call stack size exceeded".
var res = '';
var i = 0;
while (i < len) {
res += String.fromCharCode.apply(String, codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH));
}
return res;
}
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] & 0x7F);
}
return ret;
}
function latin1Slice(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 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 slice(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;
var newBuf;
if (Buffer.TYPED_ARRAY_SUPPORT) {
newBuf = this.subarray(start, end);
newBuf.__proto__ = Buffer.prototype;
} else {
var sliceLen = end - start;
newBuf = new Buffer(sliceLen, undefined);
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.readUIntLE = function readUIntLE(offset, byteLength, noAssert) {
offset = offset | 0;
byteLength = byteLength | 0;
if (!noAssert) checkOffset(offset, byteLength, this.length);
var val = this[offset];
var mul = 1;
var i = 0;
while (++i < byteLength && (mul *= 0x100)) {
val += this[offset + i] * mul;
}
return val;
};
Buffer.prototype.readUIntBE = function readUIntBE(offset, byteLength, noAssert) {
offset = offset | 0;
byteLength = byteLength | 0;
if (!noAssert) {
checkOffset(offset, byteLength, this.length);
}
var val = this[offset + --byteLength];
var mul = 1;
while (byteLength > 0 && (mul *= 0x100)) {
val += this[offset + --byteLength] * mul;
}
return val;
};
Buffer.prototype.readUInt8 = function readUInt8(offset, noAssert) {
if (!noAssert) checkOffset(offset, 1, this.length);
return this[offset];
};
Buffer.prototype.readUInt16LE = function readUInt16LE(offset, noAssert) {
if (!noAssert) checkOffset(offset, 2, this.length);
return this[offset] | this[offset + 1] << 8;
};
Buffer.prototype.readUInt16BE = function readUInt16BE(offset, noAssert) {
if (!noAssert) checkOffset(offset, 2, this.length);
return this[offset] << 8 | this[offset + 1];
};
Buffer.prototype.readUInt32LE = function readUInt32LE(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 readUInt32BE(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.readIntLE = function readIntLE(offset, byteLength, noAssert) {
offset = offset | 0;
byteLength = byteLength | 0;
if (!noAssert) checkOffset(offset, byteLength, this.length);
var val = this[offset];
var mul = 1;
var i = 0;
while (++i < byteLength && (mul *= 0x100)) {
val += this[offset + i] * mul;
}
mul *= 0x80;
if (val >= mul) val -= Math.pow(2, 8 * byteLength);
return val;
};
Buffer.prototype.readIntBE = function readIntBE(offset, byteLength, noAssert) {
offset = offset | 0;
byteLength = byteLength | 0;
if (!noAssert) checkOffset(offset, byteLength, this.length);
var i = byteLength;
var mul = 1;
var val = this[offset + --i];
while (i > 0 && (mul *= 0x100)) {
val += this[offset + --i] * mul;
}
mul *= 0x80;
if (val >= mul) val -= Math.pow(2, 8 * byteLength);
return val;
};
Buffer.prototype.readInt8 = function readInt8(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 readInt16LE(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 readInt16BE(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 readInt32LE(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 readInt32BE(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 readFloatLE(offset, noAssert) {
if (!noAssert) checkOffset(offset, 4, this.length);
return ieee754.read(this, offset, true, 23, 4);
};
Buffer.prototype.readFloatBE = function readFloatBE(offset, noAssert) {
if (!noAssert) checkOffset(offset, 4, this.length);
return ieee754.read(this, offset, false, 23, 4);
};
Buffer.prototype.readDoubleLE = function readDoubleLE(offset, noAssert) {
if (!noAssert) checkOffset(offset, 8, this.length);
return ieee754.read(this, offset, true, 52, 8);
};
Buffer.prototype.readDoubleBE = function readDoubleBE(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" argument must be a Buffer instance');
if (value > max || value < min) throw new RangeError('"value" argument is out of bounds');
if (offset + ext > buf.length) throw new RangeError('Index out of range');
}
Buffer.prototype.writeUIntLE = function writeUIntLE(value, offset, byteLength, noAssert) {
value = +value;
offset = offset | 0;
byteLength = byteLength | 0;
if (!noAssert) {
var maxBytes = Math.pow(2, 8 * byteLength) - 1;
checkInt(this, value, offset, byteLength, maxBytes, 0);
}
var mul = 1;
var i = 0;
this[offset] = value & 0xFF;
while (++i < byteLength && (mul *= 0x100)) {
this[offset + i] = value / mul & 0xFF;
}
return offset + byteLength;
};
Buffer.prototype.writeUIntBE = function writeUIntBE(value, offset, byteLength, noAssert) {
value = +value;
offset = offset | 0;
byteLength = byteLength | 0;
if (!noAssert) {
var maxBytes = Math.pow(2, 8 * byteLength) - 1;
checkInt(this, value, offset, byteLength, maxBytes, 0);
}
var i = byteLength - 1;
var mul = 1;
this[offset + i] = value & 0xFF;
while (--i >= 0 && (mul *= 0x100)) {
this[offset + i] = value / mul & 0xFF;
}
return offset + byteLength;
};
Buffer.prototype.writeUInt8 = function writeUInt8(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 & 0xff;
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 writeUInt16LE(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 & 0xff;
this[offset + 1] = value >>> 8;
} else {
objectWriteUInt16(this, value, offset, true);
}
return offset + 2;
};
Buffer.prototype.writeUInt16BE = function writeUInt16BE(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 & 0xff;
} 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 writeUInt32LE(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 & 0xff;
} else {
objectWriteUInt32(this, value, offset, true);
}
return offset + 4;
};
Buffer.prototype.writeUInt32BE = function writeUInt32BE(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 & 0xff;
} else {
objectWriteUInt32(this, value, offset, false);
}
return offset + 4;
};
Buffer.prototype.writeIntLE = function writeIntLE(value, offset, byteLength, noAssert) {
value = +value;
offset = offset | 0;
if (!noAssert) {
var limit = Math.pow(2, 8 * byteLength - 1);
checkInt(this, value, offset, byteLength, limit - 1, -limit);
}
var i = 0;
var mul = 1;
var sub = 0;
this[offset] = value & 0xFF;
while (++i < byteLength && (mul *= 0x100)) {
if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
sub = 1;
}
this[offset + i] = (value / mul >> 0) - sub & 0xFF;
}
return offset + byteLength;
};
Buffer.prototype.writeIntBE = function writeIntBE(value, offset, byteLength, noAssert) {
value = +value;
offset = offset | 0;
if (!noAssert) {
var limit = Math.pow(2, 8 * byteLength - 1);
checkInt(this, value, offset, byteLength, limit - 1, -limit);
}
var i = byteLength - 1;
var mul = 1;
var sub = 0;
this[offset + i] = value & 0xFF;
while (--i >= 0 && (mul *= 0x100)) {
if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
sub = 1;
}
this[offset + i] = (value / mul >> 0) - sub & 0xFF;
}
return offset + byteLength;
};
Buffer.prototype.writeInt8 = function writeInt8(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 & 0xff;
return offset + 1;
};
Buffer.prototype.writeInt16LE = function writeInt16LE(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 & 0xff;
this[offset + 1] = value >>> 8;
} else {
objectWriteUInt16(this, value, offset, true);
}
return offset + 2;
};
Buffer.prototype.writeInt16BE = function writeInt16BE(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 & 0xff;
} else {
objectWriteUInt16(this, value, offset, false);
}
return offset + 2;
};
Buffer.prototype.writeInt32LE = function writeInt32LE(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 & 0xff;
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 writeInt32BE(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 & 0xff;
} else {
objectWriteUInt32(this, value, offset, false);
}
return offset + 4;
};
function checkIEEE754(buf, value, offset, ext, max, min) {
if (offset + ext > buf.length) throw new RangeError('Index out of range');
if (offset < 0) throw new RangeError('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 writeFloatLE(value, offset, noAssert) {
return writeFloat(this, value, offset, true, noAssert);
};
Buffer.prototype.writeFloatBE = function writeFloatBE(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 writeDoubleLE(value, offset, noAssert) {
return writeDouble(this, value, offset, true, noAssert);
};
Buffer.prototype.writeDoubleBE = function writeDoubleBE(value, offset, noAssert) {
return writeDouble(this, value, offset, false, noAssert);
}; // copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy(target, targetStart, start, end) {
if (!start) start = 0;
if (!end && end !== 0) end = this.length;
if (targetStart >= target.length) targetStart = target.length;
if (!targetStart) targetStart = 0;
if (end > 0 && end < start) end = start; // Copy 0 bytes; we're done
if (end === start) return 0;
if (target.length === 0 || this.length === 0) return 0; // Fatal error conditions
if (targetStart < 0) {
throw new RangeError('targetStart out of bounds');
}
if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds');
if (end < 0) throw new RangeError('sourceEnd out of bounds'); // Are we oob?
if (end > this.length) end = this.length;
if (target.length - targetStart < end - start) {
end = target.length - targetStart + start;
}
var len = end - start;
var i;
if (this === target && start < targetStart && targetStart < end) {
// descending copy from end
for (i = len - 1; i >= 0; --i) {
target[i + targetStart] = this[i + start];
}
} else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
// ascending copy from start
for (i = 0; i < len; ++i) {
target[i + targetStart] = this[i + start];
}
} else {
Uint8Array.prototype.set.call(target, this.subarray(start, start + len), targetStart);
}
return len;
}; // Usage:
// buffer.fill(number[, offset[, end]])
// buffer.fill(buffer[, offset[, end]])
// buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill(val, start, end, encoding) {
// Handle string cases:
if (typeof val === 'string') {
if (typeof start === 'string') {
encoding = start;
start = 0;
end = this.length;
} else if (typeof end === 'string') {
encoding = end;
end = this.length;
}
if (val.length === 1) {
var code = val.charCodeAt(0);
if (code < 256) {
val = code;
}
}
if (encoding !== undefined && typeof encoding !== 'string') {
throw new TypeError('encoding must be a string');
}
if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
throw new TypeError('Unknown encoding: ' + encoding);
}
} else if (typeof val === 'number') {
val = val & 255;
} // Invalid ranges are not set to a default, so can range check early.
if (start < 0 || this.length < start || this.length < end) {
throw new RangeError('Out of range index');
}
if (end <= start) {
return this;
}
start = start >>> 0;
end = end === undefined ? this.length : end >>> 0;
if (!val) val = 0;
var i;
if (typeof val === 'number') {
for (i = start; i < end; ++i) {
this[i] = val;
}
} else {
var bytes = Buffer.isBuffer(val) ? val : utf8ToBytes(new Buffer(val, encoding).toString());
var len = bytes.length;
for (i = 0; i < end - start; ++i) {
this[i + start] = bytes[i % len];
}
}
return this;
}; // HELPER FUNCTIONS
// ================
var INVALID_BASE64_RE = /[^+\/0-9A-Za-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 converts strings with length < 2 to ''
if (str.length < 2) return ''; // 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 toHex(n) {
if (n < 16) return '0' + n.toString(16);
return n.toString(16);
}
function utf8ToBytes(string, units) {
units = units || Infinity;
var codePoint;
var length = string.length;
var leadSurrogate = null;
var bytes = [];
for (var i = 0; i < length; ++i) {
codePoint = string.charCodeAt(i); // is surrogate component
if (codePoint > 0xD7FF && codePoint < 0xE000) {
// last char was a lead
if (!leadSurrogate) {
// no lead yet
if (codePoint > 0xDBFF) {
// unexpected trail
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
continue;
} else if (i + 1 === length) {
// unpaired lead
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
continue;
} // valid lead
leadSurrogate = codePoint;
continue;
} // 2 leads in a row
if (codePoint < 0xDC00) {
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
leadSurrogate = codePoint;
continue;
} // valid surrogate pair
codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000;
} else if (leadSurrogate) {
// valid bmp char, but last char was a lead
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
}
leadSurrogate = null; // encode utf8
if (codePoint < 0x80) {
if ((units -= 1) < 0) break;
bytes.push(codePoint);
} else if (codePoint < 0x800) {
if ((units -= 2) < 0) break;
bytes.push(codePoint >> 0x6 | 0xC0, codePoint & 0x3F | 0x80);
} else if (codePoint < 0x10000) {
if ((units -= 3) < 0) break;
bytes.push(codePoint >> 0xC | 0xE0, codePoint >> 0x6 & 0x3F | 0x80, codePoint & 0x3F | 0x80);
} else if (codePoint < 0x110000) {
if ((units -= 4) < 0) break;
bytes.push(codePoint >> 0x12 | 0xF0, codePoint >> 0xC & 0x3F | 0x80, codePoint >> 0x6 & 0x3F | 0x80, codePoint & 0x3F | 0x80);
} else {
throw new Error('Invalid code point');
}
}
return bytes;
}
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, units) {
var c, hi, lo;
var byteArray = [];
for (var i = 0; i < str.length; ++i) {
if ((units -= 2) < 0) break;
c = str.charCodeAt(i);
hi = c >> 8;
lo = c % 256;
byteArray.push(lo);
byteArray.push(hi);
}
return byteArray;
}
function base64ToBytes(str) {
return base64.toByteArray(base64clean(str));
}
function blitBuffer(src, dst, offset, length) {
for (var i = 0; i < length; ++i) {
if (i + offset >= dst.length || i >= src.length) break;
dst[i + offset] = src[i];
}
return i;
}
function isnan(val) {
return val !== val; // eslint-disable-line no-self-compare
}
/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(1)))
/***/ }),
/* 6 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
exports.byteLength = byteLength;
exports.toByteArray = toByteArray;
exports.fromByteArray = fromByteArray;
var lookup = [];
var revLookup = [];
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array;
var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
for (var i = 0, len = code.length; i < len; ++i) {
lookup[i] = code[i];
revLookup[code.charCodeAt(i)] = i;
} // Support decoding URL-safe base64 strings, as Node.js does.
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
revLookup['-'.charCodeAt(0)] = 62;
revLookup['_'.charCodeAt(0)] = 63;
function getLens(b64) {
var len = b64.length;
if (len % 4 > 0) {
throw new Error('Invalid string. Length must be a multiple of 4');
} // Trim off extra bytes after placeholder bytes are found
// See: https://github.com/beatgammit/base64-js/issues/42
var validLen = b64.indexOf('=');
if (validLen === -1) validLen = len;
var placeHoldersLen = validLen === len ? 0 : 4 - validLen % 4;
return [validLen, placeHoldersLen];
} // base64 is 4/3 + up to two characters of the original data
function byteLength(b64) {
var lens = getLens(b64);
var validLen = lens[0];
var placeHoldersLen = lens[1];
return (validLen + placeHoldersLen) * 3 / 4 - placeHoldersLen;
}
function _byteLength(b64, validLen, placeHoldersLen) {
return (validLen + placeHoldersLen) * 3 / 4 - placeHoldersLen;
}
function toByteArray(b64) {
var tmp;
var lens = getLens(b64);
var validLen = lens[0];
var placeHoldersLen = lens[1];
var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen));
var curByte = 0; // if there are placeholders, only get up to the last complete 4 chars
var len = placeHoldersLen > 0 ? validLen - 4 : validLen;
for (var i = 0; i < len; i += 4) {
tmp = revLookup[b64.charCodeAt(i)] << 18 | revLookup[b64.charCodeAt(i + 1)] << 12 | revLookup[b64.charCodeAt(i + 2)] << 6 | revLookup[b64.charCodeAt(i + 3)];
arr[curByte++] = tmp >> 16 & 0xFF;
arr[curByte++] = tmp >> 8 & 0xFF;
arr[curByte++] = tmp & 0xFF;
}
if (placeHoldersLen === 2) {
tmp = revLookup[b64.charCodeAt(i)] << 2 | revLookup[b64.charCodeAt(i + 1)] >> 4;
arr[curByte++] = tmp & 0xFF;
}
if (placeHoldersLen === 1) {
tmp = revLookup[b64.charCodeAt(i)] << 10 | revLookup[b64.charCodeAt(i + 1)] << 4 | revLookup[b64.charCodeAt(i + 2)] >> 2;
arr[curByte++] = tmp >> 8 & 0xFF;
arr[curByte++] = tmp & 0xFF;
}
return arr;
}
function tripletToBase64(num) {
return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F];
}
function encodeChunk(uint8, start, end) {
var tmp;
var output = [];
for (var i = start; i < end; i += 3) {
tmp = (uint8[i] << 16 & 0xFF0000) + (uint8[i + 1] << 8 & 0xFF00) + (uint8[i + 2] & 0xFF);
output.push(tripletToBase64(tmp));
}
return output.join('');
}
function fromByteArray(uint8) {
var tmp;
var len = uint8.length;
var extraBytes = len % 3; // if we have 1 byte left, pad 2 bytes
var parts = [];
var maxChunkLength = 16383; // must be multiple of 3
// go through the array every three bytes, we'll deal with trailing stuff later
for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
parts.push(encodeChunk(uint8, i, i + maxChunkLength > len2 ? len2 : i + maxChunkLength));
} // pad the end with zeros, but make sure to not forget the extra bytes
if (extraBytes === 1) {
tmp = uint8[len - 1];
parts.push(lookup[tmp >> 2] + lookup[tmp << 4 & 0x3F] + '==');
} else if (extraBytes === 2) {
tmp = (uint8[len - 2] << 8) + uint8[len - 1];
parts.push(lookup[tmp >> 10] + lookup[tmp >> 4 & 0x3F] + lookup[tmp << 2 & 0x3F] + '=');
}
return parts.join('');
}
/***/ }),
/* 7 */
/***/ (function(module, exports) {
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
var e, m;
var eLen = nBytes * 8 - mLen - 1;
var eMax = (1 << eLen) - 1;
var eBias = eMax >> 1;
var nBits = -7;
var i = isLE ? nBytes - 1 : 0;
var d = isLE ? -1 : 1;
var 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;
var eLen = nBytes * 8 - mLen - 1;
var eMax = (1 << eLen) - 1;
var eBias = eMax >> 1;
var rt = mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0;
var i = isLE ? 0 : nBytes - 1;
var d = isLE ? 1 : -1;
var 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;
};
/***/ }),
/* 8 */
/***/ (function(module, exports) {
var toString = {}.toString;
module.exports = Array.isArray || function (arr) {
return toString.call(arr) == '[object Array]';
};
/***/ }),
/* 9 */
/***/ (function(module, exports, __webpack_require__) {
/* WEBPACK VAR INJECTION */(function(module, global) {var __WEBPACK_AMD_DEFINE_RESULT__;/*! https://mths.be/utf8js v2.1.2 by @mathias */
;
(function (root) {
// Detect free variables `exports`
var freeExports = true && exports; // Detect free variable `module`
var freeModule = true && module && module.exports == freeExports && module; // Detect free variable `global`, from Node.js or Browserified code,
// and use it as `root`
var freeGlobal = typeof global == 'object' && global;
if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {
root = freeGlobal;
}
/*--------------------------------------------------------------------------*/
var stringFromCharCode = String.fromCharCode; // Taken from https://mths.be/punycode
function ucs2decode(string) {
var output = [];
var counter = 0;
var length = string.length;
var value;
var extra;
while (counter < length) {
value = string.charCodeAt(counter++);
if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
// high surrogate, and there is a next character
extra = string.charCodeAt(counter++);
if ((extra & 0xFC00) == 0xDC00) {
// low surrogate
output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
} else {
// unmatched surrogate; only append this code unit, in case the next
// code unit is the high surrogate of a surrogate pair
output.push(value);
counter--;
}
} else {
output.push(value);
}
}
return output;
} // Taken from https://mths.be/punycode
function ucs2encode(array) {
var length = array.length;
var index = -1;
var value;
var output = '';
while (++index < length) {
value = array[index];
if (value > 0xFFFF) {
value -= 0x10000;
output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
value = 0xDC00 | value & 0x3FF;
}
output += stringFromCharCode(value);
}
return output;
}
function checkScalarValue(codePoint) {
if (codePoint >= 0xD800 && codePoint <= 0xDFFF) {
throw Error('Lone surrogate U+' + codePoint.toString(16).toUpperCase() + ' is not a scalar value');
}
}
/*--------------------------------------------------------------------------*/
function createByte(codePoint, shift) {
return stringFromCharCode(codePoint >> shift & 0x3F | 0x80);
}
function encodeCodePoint(codePoint) {
if ((codePoint & 0xFFFFFF80) == 0) {
// 1-byte sequence
return stringFromCharCode(codePoint);
}
var symbol = '';
if ((codePoint & 0xFFFFF800) == 0) {
// 2-byte sequence
symbol = stringFromCharCode(codePoint >> 6 & 0x1F | 0xC0);
} else if ((codePoint & 0xFFFF0000) == 0) {
// 3-byte sequence
checkScalarValue(codePoint);
symbol = stringFromCharCode(codePoint >> 12 & 0x0F | 0xE0);
symbol += createByte(codePoint, 6);
} else if ((codePoint & 0xFFE00000) == 0) {
// 4-byte sequence
symbol = stringFromCharCode(codePoint >> 18 & 0x07 | 0xF0);
symbol += createByte(codePoint, 12);
symbol += createByte(codePoint, 6);
}
symbol += stringFromCharCode(codePoint & 0x3F | 0x80);
return symbol;
}
function utf8encode(string) {
var codePoints = ucs2decode(string);
var length = codePoints.length;
var index = -1;
var codePoint;
var byteString = '';
while (++index < length) {
codePoint = codePoints[index];
byteString += encodeCodePoint(codePoint);
}
return byteString;
}
/*--------------------------------------------------------------------------*/
function readContinuationByte() {
if (byteIndex >= byteCount) {
throw Error('Invalid byte index');
}
var continuationByte = byteArray[byteIndex] & 0xFF;
byteIndex++;
if ((continuationByte & 0xC0) == 0x80) {
return continuationByte & 0x3F;
} // If we end up here, it’s not a continuation byte
throw Error('Invalid continuation byte');
}
function decodeSymbol() {
var byte1;
var byte2;
var byte3;
var byte4;
var codePoint;
if (byteIndex > byteCount) {
throw Error('Invalid byte index');
}
if (byteIndex == byteCount) {
return false;
} // Read first byte
byte1 = byteArray[byteIndex] & 0xFF;
byteIndex++; // 1-byte sequence (no continuation bytes)
if ((byte1 & 0x80) == 0) {
return byte1;
} // 2-byte sequence
if ((byte1 & 0xE0) == 0xC0) {
byte2 = readContinuationByte();
codePoint = (byte1 & 0x1F) << 6 | byte2;
if (codePoint >= 0x80) {
return codePoint;
} else {
throw Error('Invalid continuation byte');
}
} // 3-byte sequence (may include unpaired surrogates)
if ((byte1 & 0xF0) == 0xE0) {
byte2 = readContinuationByte();
byte3 = readContinuationByte();
codePoint = (byte1 & 0x0F) << 12 | byte2 << 6 | byte3;
if (codePoint >= 0x0800) {
checkScalarValue(codePoint);
return codePoint;
} else {
throw Error('Invalid continuation byte');
}
} // 4-byte sequence
if ((byte1 & 0xF8) == 0xF0) {
byte2 = readContinuationByte();
byte3 = readContinuationByte();
byte4 = readContinuationByte();
codePoint = (byte1 & 0x07) << 0x12 | byte2 << 0x0C | byte3 << 0x06 | byte4;
if (codePoint >= 0x010000 && codePoint <= 0x10FFFF) {
return codePoint;
}
}
throw Error('Invalid UTF-8 detected');
}
var byteArray;
var byteCount;
var byteIndex;
function utf8decode(byteString) {
byteArray = ucs2decode(byteString);
byteCount = byteArray.length;
byteIndex = 0;
var codePoints = [];
var tmp;
while ((tmp = decodeSymbol()) !== false) {
codePoints.push(tmp);
}
return ucs2encode(codePoints);
}
/*--------------------------------------------------------------------------*/
var utf8 = {
'version': '2.1.2',
'encode': utf8encode,
'decode': utf8decode
}; // Some AMD build optimizers, like r.js, check for specific condition patterns
// like the following:
if (true) {
!(__WEBPACK_AMD_DEFINE_RESULT__ = (function () {
return utf8;
}).call(exports, __webpack_require__, exports, module),
__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
} else { var key, hasOwnProperty, object; }
})(this);
/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(10)(module), __webpack_require__(1)))
/***/ }),
/* 10 */
/***/ (function(module, exports) {
module.exports = function (module) {
if (!module.webpackPolyfill) {
module.deprecate = function () {};
module.paths = []; // module.parent = undefined by default
if (!module.children) module.children = [];
Object.defineProperty(module, "loaded", {
enumerable: true,
get: function get() {
return module.l;
}
});
Object.defineProperty(module, "id", {
enumerable: true,
get: function get() {
return module.i;
}
});
module.webpackPolyfill = 1;
}
return module;
};
/***/ }),
/* 11 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
const types = __webpack_require__(2); // const STREAMING = 4294967295;
/**
* Read data for the given non-record variable
* @ignore
* @param {IOBuffer} buffer - Buffer for the file data
* @param {object} variable - Variable metadata
* @return {Array} - Data of the element
*/
function nonRecord(buffer, variable) {
// variable type
const type = types.str2num(variable.type); // size of the data
var size = variable.size / types.num2bytes(type); // iterates over the data
var data = new Array(size);
for (var i = 0; i < size; i++) {
data[i] = types.readType(buffer, type, 1);
}
return data;
}
/**
* Read data for the given record variable
* @ignore
* @param {IOBuffer} buffer - Buffer for the file data
* @param {object} variable - Variable metadata
* @param {object} recordDimension - Record dimension metadata
* @return {Array} - Data of the element
*/
function record(buffer, variable, recordDimension) {
// variable type
const type = types.str2num(variable.type);
const width = variable.size ? variable.size / types.num2bytes(type) : 1; // size of the data
// TODO streaming data
var size = recordDimension.length; // iterates over the data
var data = new Array(size);
const step = recordDimension.recordStep;
for (var i = 0; i < size; i++) {
var currentOffset = buffer.offset;
data[i] = types.readType(buffer, type, width);
buffer.seek(currentOffset + step);
}
return data;
}
module.exports.nonRecord = nonRecord;
module.exports.record = record;
/***/ }),
/* 12 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
const utils = __webpack_require__(0);
const types = __webpack_require__(2); // Grammar constants
const ZERO = 0;
const NC_DIMENSION = 10;
const NC_VARIABLE = 11;
const NC_ATTRIBUTE = 12;
/**
* Read the header of the file
* @ignore
* @param {IOBuffer} buffer - Buffer for the file data
* @param {number} version - Version of the file
* @return {object} - Object with the fields:
* * `recordDimension`: Number with the length of record dimension
* * `dimensions`: List of dimensions
* * `globalAttributes`: List of global attributes
* * `variables`: List of variables
*/
function header(buffer, version) {
// Length of record dimension
// sum of the varSize's of all the record variables.
var header = {
recordDimension: {
length: buffer.readUint32()
}
}; // Version
header.version = version; // List of dimensions
var dimList = dimensionsList(buffer);
header.recordDimension.id = dimList.recordId; // id of the unlimited dimension
header.recordDimension.name = dimList.recordName; // name of the unlimited dimension
header.dimensions = dimList.dimensions; // List of global attributes
header.globalAttributes = attributesList(buffer); // List of variables
var variables = variablesList(buffer, dimList.recordId, version);
header.variables = variables.variables;
header.recordDimension.recordStep = variables.recordStep;
return header;
}
const NC_UNLIMITED = 0;
/**
* List of dimensions
* @ignore
* @param {IOBuffer} buffer - Buffer for the file data
* @return {object} - Ojbect containing the following properties:
* * `dimensions` that is an array of dimension object:
* * `name`: String with the name of the dimension
* * `size`: Number with the size of the dimension dimensions: dimensions
* * `recordId`: the id of the dimension that has unlimited size or undefined,
* * `recordName`: name of the dimension that has unlimited size
*/
function dimensionsList(buffer) {
var recordId, recordName;
const dimList = buffer.readUint32();
if (dimList === ZERO) {
utils.notNetcdf(buffer.readUint32() !== ZERO, 'wrong empty tag for list of dimensions');
return [];
} else {
utils.notNetcdf(dimList !== NC_DIMENSION, 'wrong tag for list of dimensions'); // Length of dimensions
const dimensionSize = buffer.readUint32();
var dimensions = new Array(dimensionSize);
for (var dim = 0; dim < dimensionSize; dim++) {
// Read name
var name = utils.readName(buffer); // Read dimension size
const size = buffer.readUint32();
if (size === NC_UNLIMITED) {
// in netcdf 3 one field can be of size unlimmited
recordId = dim;
recordName = name;
}
dimensions[dim] = {
name: name,
size: size
};
}
}
return {
dimensions: dimensions,
recordId: recordId,
recordName: recordName
};
}
/**
* List of attributes
* @ignore
* @param {IOBuffer} buffer - Buffer for the file data
* @return {Array<object>} - List of attributes with:
* * `name`: String with the name of the attribute
* * `type`: String with the type of the attribute
* * `value`: A number or string with the value of the attribute
*/
function attributesList(buffer) {
const gAttList = buffer.readUint32();
if (gAttList === ZERO) {
utils.notNetcdf(buffer.readUint32() !== ZERO, 'wrong empty tag for list of attributes');
return [];
} else {
utils.notNetcdf(gAttList !== NC_ATTRIBUTE, 'wrong tag for list of attributes'); // Length of attributes
const attributeSize = buffer.readUint32();
var attributes = new Array(attributeSize);
for (var gAtt = 0; gAtt < attributeSize; gAtt++) {
// Read name
var name = utils.readName(buffer); // Read type
var type = buffer.readUint32();
utils.notNetcdf(type < 1 || type > 6, `non valid type ${type}`); // Read attribute
var size = buffer.readUint32();
var value = types.readType(buffer, type, size); // Apply padding
utils.padding(buffer);
attributes[gAtt] = {
name: name,
type: types.num2str(type),
value: value
};
}
}
return attributes;
}
/**
* List of variables
* @ignore
* @param {IOBuffer} buffer - Buffer for the file data
* @param {number} recordId - Id of the unlimited dimension (also called record dimension)
* This value may be undefined if there is no unlimited dimension
* @param {number} version - Version of the file
* @return {object} - Number of recordStep and list of variables with:
* * `name`: String with the name of the variable
* * `dimensions`: Array with the dimension IDs of the variable
* * `attributes`: Array with the attributes of the variable
* * `type`: String with the type of the variable
* * `size`: Number with the size of the variable
* * `offset`: Number with the offset where of the variable begins
* * `record`: True if is a record variable, false otherwise (unlimited size)
*/
function variablesList(buffer, recordId, version) {
const varList = buffer.readUint32();
var recordStep = 0;
if (varList === ZERO) {
utils.notNetcdf(buffer.readUint32() !== ZERO, 'wrong empty tag for list of variables');
return [];
} else {
utils.notNetcdf(varList !== NC_VARIABLE, 'wrong tag for list of variables'); // Length of variables
const variableSize = buffer.readUint32();
var variables = new Array(variableSize);
for (var v = 0; v < variableSize; v++) {
// Read name
var name = utils.readName(buffer); // Read dimensionality of the variable
const dimensionality = buffer.readUint32(); // Index into the list of dimensions
var dimensionsIds = new Array(dimensionality);
for (var dim = 0; dim < dimensionality; dim++) {
dimensionsIds[dim] = buffer.readUint32();
} // Read variables size
var attributes = attributesList(buffer); // Read type
var type = buffer.readUint32();
utils.notNetcdf(type < 1 && type > 6, `non valid type ${type}`); // Read variable size
// The 32-bit varSize field is not large enough to contain the size of variables that require
// more than 2^32 - 4 bytes, so 2^32 - 1 is used in the varSize field for such variables.
const varSize = buffer.readUint32(); // Read offset
var offset = buffer.readUint32();
if (version === 2) {
utils.notNetcdf(offset > 0, 'offsets larger than 4GB not supported');
offset = buffer.readUint32();
}
let record = false; // Count amount of record variables
if (typeof recordId !== 'undefined' && dimensionsIds[0] === recordId) {
recordStep += varSize;
record = true;
}
variables[v] = {
name: name,
dimensions: dimensionsIds,
attributes,
type: types.num2str(type),
size: varSize,
offset,
record
};
}
}
return {
variables: variables,
recordStep: recordStep
};
}
module.exports = header;
/***/ }),
/* 13 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
function toString() {
let result = [];
result.push('DIMENSIONS');
for (let dimension of this.dimensions) {
result.push(` ${dimension.name.padEnd(30)} = size: ${dimension.size}`);
}
result.push('');
result.push('GLOBAL ATTRIBUTES');
for (let attribute of this.globalAttributes) {
result.push(` ${attribute.name.padEnd(30)} = ${attribute.value}`);
}
let variables = JSON.parse(JSON.stringify(this.variables));
result.push('');
result.push('VARIABLES:');
for (let variable of variables) {
variable.value = this.getDataVariable(variable);
let stringify = JSON.stringify(variable.value);
if (stringify.length > 50) stringify = stringify.substring(0, 50);
if (!isNaN(variable.value.length)) {
stringify += ` (length: ${variable.value.length})`;
}
result.push(` ${variable.name.padEnd(30)} = ${stringify}`);
}
return result.join('\n');
}
module.exports = toString;
/***/ })
/******/ ]);
});
//# sourceMappingURL=netcdfjs.js.map
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