%PDF-
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Mini Shell
Mini Shell
require=(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
(function (Buffer){
module.exports = BinaryReader;
function BinaryReader(buffer, isBigEndian) {
this.buffer = buffer;
this.position = 0;
this.isBigEndian = isBigEndian || false;
}
function _read(readLE, readBE, size) {
return function () {
var value;
if (this.isBigEndian)
value = readBE.call(this.buffer, this.position);
else
value = readLE.call(this.buffer, this.position);
this.position += size;
return value;
};
}
BinaryReader.prototype.readUInt8 = _read(Buffer.prototype.readUInt8, Buffer.prototype.readUInt8, 1);
BinaryReader.prototype.readUInt16 = _read(Buffer.prototype.readUInt16LE, Buffer.prototype.readUInt16BE, 2);
BinaryReader.prototype.readUInt32 = _read(Buffer.prototype.readUInt32LE, Buffer.prototype.readUInt32BE, 4);
BinaryReader.prototype.readInt8 = _read(Buffer.prototype.readInt8, Buffer.prototype.readInt8, 1);
BinaryReader.prototype.readInt16 = _read(Buffer.prototype.readInt16LE, Buffer.prototype.readInt16BE, 2);
BinaryReader.prototype.readInt32 = _read(Buffer.prototype.readInt32LE, Buffer.prototype.readInt32BE, 4);
BinaryReader.prototype.readFloat = _read(Buffer.prototype.readFloatLE, Buffer.prototype.readFloatBE, 4);
BinaryReader.prototype.readDouble = _read(Buffer.prototype.readDoubleLE, Buffer.prototype.readDoubleBE, 8);
BinaryReader.prototype.readVarInt = function () {
var nextByte,
result = 0,
bytesRead = 0;
do {
nextByte = this.buffer[this.position + bytesRead];
result += (nextByte & 0x7F) << (7 * bytesRead);
bytesRead++;
} while (nextByte >= 0x80);
this.position += bytesRead;
return result;
};
}).call(this,require("buffer").Buffer)
},{"buffer":"buffer"}],2:[function(require,module,exports){
(function (Buffer){
module.exports = BinaryWriter;
function BinaryWriter(size, allowResize) {
this.buffer = new Buffer(size);
this.position = 0;
this.allowResize = allowResize;
}
function _write(write, size) {
return function (value, noAssert) {
this.ensureSize(size);
write.call(this.buffer, value, this.position, noAssert);
this.position += size;
};
}
BinaryWriter.prototype.writeUInt8 = _write(Buffer.prototype.writeUInt8, 1);
BinaryWriter.prototype.writeUInt16LE = _write(Buffer.prototype.writeUInt16LE, 2);
BinaryWriter.prototype.writeUInt16BE = _write(Buffer.prototype.writeUInt16BE, 2);
BinaryWriter.prototype.writeUInt32LE = _write(Buffer.prototype.writeUInt32LE, 4);
BinaryWriter.prototype.writeUInt32BE = _write(Buffer.prototype.writeUInt32BE, 4);
BinaryWriter.prototype.writeInt8 = _write(Buffer.prototype.writeInt8, 1);
BinaryWriter.prototype.writeInt16LE = _write(Buffer.prototype.writeInt16LE, 2);
BinaryWriter.prototype.writeInt16BE = _write(Buffer.prototype.writeInt16BE, 2);
BinaryWriter.prototype.writeInt32LE = _write(Buffer.prototype.writeInt32LE, 4);
BinaryWriter.prototype.writeInt32BE = _write(Buffer.prototype.writeInt32BE, 4);
BinaryWriter.prototype.writeFloatLE = _write(Buffer.prototype.writeFloatLE, 4);
BinaryWriter.prototype.writeFloatBE = _write(Buffer.prototype.writeFloatBE, 4);
BinaryWriter.prototype.writeDoubleLE = _write(Buffer.prototype.writeDoubleLE, 8);
BinaryWriter.prototype.writeDoubleBE = _write(Buffer.prototype.writeDoubleBE, 8);
BinaryWriter.prototype.writeBuffer = function (buffer) {
this.ensureSize(buffer.length);
buffer.copy(this.buffer, this.position, 0, buffer.length);
this.position += buffer.length;
};
BinaryWriter.prototype.writeVarInt = function (value) {
var length = 1;
while ((value & 0xFFFFFF80) !== 0) {
this.writeUInt8((value & 0x7F) | 0x80);
value >>>= 7;
length++;
}
this.writeUInt8(value & 0x7F);
return length;
};
BinaryWriter.prototype.ensureSize = function (size) {
if (this.buffer.length < this.position + size) {
if (this.allowResize) {
var tempBuffer = new Buffer(this.position + size);
this.buffer.copy(tempBuffer, 0, 0, this.buffer.length);
this.buffer = tempBuffer;
}
else {
throw new RangeError('index out of range');
}
}
};
}).call(this,require("buffer").Buffer)
},{"buffer":"buffer"}],3:[function(require,module,exports){
(function (Buffer){
module.exports = Geometry;
var Types = require('./types');
var Point = require('./point');
var LineString = require('./linestring');
var Polygon = require('./polygon');
var MultiPoint = require('./multipoint');
var MultiLineString = require('./multilinestring');
var MultiPolygon = require('./multipolygon');
var GeometryCollection = require('./geometrycollection');
var BinaryReader = require('./binaryreader');
var BinaryWriter = require('./binarywriter');
var WktParser = require('./wktparser');
var ZigZag = require('./zigzag.js');
function Geometry() {
this.srid = undefined;
this.hasZ = false;
this.hasM = false;
}
Geometry.parse = function (value, options) {
var valueType = typeof value;
if (valueType === 'string' || value instanceof WktParser)
return Geometry._parseWkt(value);
else if (Buffer.isBuffer(value) || value instanceof BinaryReader)
return Geometry._parseWkb(value, options);
else
throw new Error('first argument must be a string or Buffer');
};
Geometry._parseWkt = function (value) {
var wktParser,
srid;
if (value instanceof WktParser)
wktParser = value;
else
wktParser = new WktParser(value);
var match = wktParser.matchRegex([/^SRID=(\d+);/]);
if (match)
srid = parseInt(match[1], 10);
var geometryType = wktParser.matchType();
var dimension = wktParser.matchDimension();
var options = {
srid: srid,
hasZ: dimension.hasZ,
hasM: dimension.hasM
};
switch (geometryType) {
case Types.wkt.Point:
return Point._parseWkt(wktParser, options);
case Types.wkt.LineString:
return LineString._parseWkt(wktParser, options);
case Types.wkt.Polygon:
return Polygon._parseWkt(wktParser, options);
case Types.wkt.MultiPoint:
return MultiPoint._parseWkt(wktParser, options);
case Types.wkt.MultiLineString:
return MultiLineString._parseWkt(wktParser, options);
case Types.wkt.MultiPolygon:
return MultiPolygon._parseWkt(wktParser, options);
case Types.wkt.GeometryCollection:
return GeometryCollection._parseWkt(wktParser, options);
}
};
Geometry._parseWkb = function (value, parentOptions) {
var binaryReader,
wkbType,
geometryType,
options = {};
if (value instanceof BinaryReader)
binaryReader = value;
else
binaryReader = new BinaryReader(value);
binaryReader.isBigEndian = !binaryReader.readInt8();
wkbType = binaryReader.readUInt32();
options.hasSrid = (wkbType & 0x20000000) === 0x20000000;
options.isEwkb = (wkbType & 0x20000000) || (wkbType & 0x40000000) || (wkbType & 0x80000000);
if (options.hasSrid)
options.srid = binaryReader.readUInt32();
options.hasZ = false;
options.hasM = false;
if (!options.isEwkb && (!parentOptions || !parentOptions.isEwkb)) {
if (wkbType >= 1000 && wkbType < 2000) {
options.hasZ = true;
geometryType = wkbType - 1000;
}
else if (wkbType >= 2000 && wkbType < 3000) {
options.hasM = true;
geometryType = wkbType - 2000;
}
else if (wkbType >= 3000 && wkbType < 4000) {
options.hasZ = true;
options.hasM = true;
geometryType = wkbType - 3000;
}
else {
geometryType = wkbType;
}
}
else {
if (wkbType & 0x80000000)
options.hasZ = true;
if (wkbType & 0x40000000)
options.hasM = true;
geometryType = wkbType & 0xF;
}
switch (geometryType) {
case Types.wkb.Point:
return Point._parseWkb(binaryReader, options);
case Types.wkb.LineString:
return LineString._parseWkb(binaryReader, options);
case Types.wkb.Polygon:
return Polygon._parseWkb(binaryReader, options);
case Types.wkb.MultiPoint:
return MultiPoint._parseWkb(binaryReader, options);
case Types.wkb.MultiLineString:
return MultiLineString._parseWkb(binaryReader, options);
case Types.wkb.MultiPolygon:
return MultiPolygon._parseWkb(binaryReader, options);
case Types.wkb.GeometryCollection:
return GeometryCollection._parseWkb(binaryReader, options);
default:
throw new Error('GeometryType ' + geometryType + ' not supported');
}
};
Geometry.parseTwkb = function (value) {
var binaryReader,
options = {};
if (value instanceof BinaryReader)
binaryReader = value;
else
binaryReader = new BinaryReader(value);
var type = binaryReader.readUInt8();
var metadataHeader = binaryReader.readUInt8();
var geometryType = type & 0x0F;
options.precision = ZigZag.decode(type >> 4);
options.precisionFactor = Math.pow(10, options.precision);
options.hasBoundingBox = metadataHeader >> 0 & 1;
options.hasSizeAttribute = metadataHeader >> 1 & 1;
options.hasIdList = metadataHeader >> 2 & 1;
options.hasExtendedPrecision = metadataHeader >> 3 & 1;
options.isEmpty = metadataHeader >> 4 & 1;
if (options.hasExtendedPrecision) {
var extendedPrecision = binaryReader.readUInt8();
options.hasZ = (extendedPrecision & 0x01) === 0x01;
options.hasM = (extendedPrecision & 0x02) === 0x02;
options.zPrecision = ZigZag.decode((extendedPrecision & 0x1C) >> 2);
options.zPrecisionFactor = Math.pow(10, options.zPrecision);
options.mPrecision = ZigZag.decode((extendedPrecision & 0xE0) >> 5);
options.mPrecisionFactor = Math.pow(10, options.mPrecision);
}
else {
options.hasZ = false;
options.hasM = false;
}
if (options.hasSizeAttribute)
binaryReader.readVarInt();
if (options.hasBoundingBox) {
var dimensions = 2;
if (options.hasZ)
dimensions++;
if (options.hasM)
dimensions++;
for (var i = 0; i < dimensions; i++) {
binaryReader.readVarInt();
binaryReader.readVarInt();
}
}
switch (geometryType) {
case Types.wkb.Point:
return Point._parseTwkb(binaryReader, options);
case Types.wkb.LineString:
return LineString._parseTwkb(binaryReader, options);
case Types.wkb.Polygon:
return Polygon._parseTwkb(binaryReader, options);
case Types.wkb.MultiPoint:
return MultiPoint._parseTwkb(binaryReader, options);
case Types.wkb.MultiLineString:
return MultiLineString._parseTwkb(binaryReader, options);
case Types.wkb.MultiPolygon:
return MultiPolygon._parseTwkb(binaryReader, options);
case Types.wkb.GeometryCollection:
return GeometryCollection._parseTwkb(binaryReader, options);
default:
throw new Error('GeometryType ' + geometryType + ' not supported');
}
};
Geometry.parseGeoJSON = function (value) {
return Geometry._parseGeoJSON(value);
};
Geometry._parseGeoJSON = function (value, isSubGeometry) {
var geometry;
switch (value.type) {
case Types.geoJSON.Point:
geometry = Point._parseGeoJSON(value); break;
case Types.geoJSON.LineString:
geometry = LineString._parseGeoJSON(value); break;
case Types.geoJSON.Polygon:
geometry = Polygon._parseGeoJSON(value); break;
case Types.geoJSON.MultiPoint:
geometry = MultiPoint._parseGeoJSON(value); break;
case Types.geoJSON.MultiLineString:
geometry = MultiLineString._parseGeoJSON(value); break;
case Types.geoJSON.MultiPolygon:
geometry = MultiPolygon._parseGeoJSON(value); break;
case Types.geoJSON.GeometryCollection:
geometry = GeometryCollection._parseGeoJSON(value); break;
default:
throw new Error('GeometryType ' + value.type + ' not supported');
}
if (value.crs && value.crs.type && value.crs.type === 'name' && value.crs.properties && value.crs.properties.name) {
var crs = value.crs.properties.name;
if (crs.indexOf('EPSG:') === 0)
geometry.srid = parseInt(crs.substring(5));
else if (crs.indexOf('urn:ogc:def:crs:EPSG::') === 0)
geometry.srid = parseInt(crs.substring(22));
else
throw new Error('Unsupported crs: ' + crs);
}
else if (!isSubGeometry) {
geometry.srid = 4326;
}
return geometry;
};
Geometry.prototype.toEwkt = function () {
return 'SRID=' + this.srid + ';' + this.toWkt();
};
Geometry.prototype.toEwkb = function () {
var ewkb = new BinaryWriter(this._getWkbSize() + 4);
var wkb = this.toWkb();
ewkb.writeInt8(1);
ewkb.writeUInt32LE((wkb.slice(1, 5).readUInt32LE(0) | 0x20000000) >>> 0, true);
ewkb.writeUInt32LE(this.srid);
ewkb.writeBuffer(wkb.slice(5));
return ewkb.buffer;
};
Geometry.prototype._getWktType = function (wktType, isEmpty) {
var wkt = wktType;
if (this.hasZ && this.hasM)
wkt += ' ZM ';
else if (this.hasZ)
wkt += ' Z ';
else if (this.hasM)
wkt += ' M ';
if (isEmpty && !this.hasZ && !this.hasM)
wkt += ' ';
if (isEmpty)
wkt += 'EMPTY';
return wkt;
};
Geometry.prototype._getWktCoordinate = function (point) {
var coordinates = point.x + ' ' + point.y;
if (this.hasZ)
coordinates += ' ' + point.z;
if (this.hasM)
coordinates += ' ' + point.m;
return coordinates;
};
Geometry.prototype._writeWkbType = function (wkb, geometryType, parentOptions) {
var dimensionType = 0;
if (typeof this.srid === 'undefined' && (!parentOptions || typeof parentOptions.srid === 'undefined')) {
if (this.hasZ && this.hasM)
dimensionType += 3000;
else if (this.hasZ)
dimensionType += 1000;
else if (this.hasM)
dimensionType += 2000;
}
else {
if (this.hasZ)
dimensionType |= 0x80000000;
if (this.hasM)
dimensionType |= 0x40000000;
}
wkb.writeUInt32LE((dimensionType + geometryType) >>> 0, true);
};
Geometry.getTwkbPrecision = function (xyPrecision, zPrecision, mPrecision) {
return {
xy: xyPrecision,
z: zPrecision,
m: mPrecision,
xyFactor: Math.pow(10, xyPrecision),
zFactor: Math.pow(10, zPrecision),
mFactor: Math.pow(10, mPrecision)
};
};
Geometry.prototype._writeTwkbHeader = function (twkb, geometryType, precision, isEmpty) {
var type = (ZigZag.encode(precision.xy) << 4) + geometryType;
var metadataHeader = (this.hasZ || this.hasM) << 3;
metadataHeader += isEmpty << 4;
twkb.writeUInt8(type);
twkb.writeUInt8(metadataHeader);
if (this.hasZ || this.hasM) {
var extendedPrecision = 0;
if (this.hasZ)
extendedPrecision |= 0x1;
if (this.hasM)
extendedPrecision |= 0x2;
twkb.writeUInt8(extendedPrecision);
}
};
Geometry.prototype.toGeoJSON = function (options) {
var geoJSON = {};
if (this.srid) {
if (options) {
if (options.shortCrs) {
geoJSON.crs = {
type: 'name',
properties: {
name: 'EPSG:' + this.srid
}
};
}
else if (options.longCrs) {
geoJSON.crs = {
type: 'name',
properties: {
name: 'urn:ogc:def:crs:EPSG::' + this.srid
}
};
}
}
}
return geoJSON;
};
}).call(this,{"isBuffer":require("../node_modules/is-buffer/index.js")})
},{"../node_modules/is-buffer/index.js":17,"./binaryreader":1,"./binarywriter":2,"./geometrycollection":4,"./linestring":5,"./multilinestring":6,"./multipoint":7,"./multipolygon":8,"./point":9,"./polygon":10,"./types":11,"./wktparser":12,"./zigzag.js":13}],4:[function(require,module,exports){
module.exports = GeometryCollection;
var util = require('util');
var Types = require('./types');
var Geometry = require('./geometry');
var BinaryWriter = require('./binarywriter');
function GeometryCollection(geometries, srid) {
Geometry.call(this);
this.geometries = geometries || [];
this.srid = srid;
if (this.geometries.length > 0) {
this.hasZ = this.geometries[0].hasZ;
this.hasM = this.geometries[0].hasM;
}
}
util.inherits(GeometryCollection, Geometry);
GeometryCollection.Z = function (geometries, srid) {
var geometryCollection = new GeometryCollection(geometries, srid);
geometryCollection.hasZ = true;
return geometryCollection;
};
GeometryCollection.M = function (geometries, srid) {
var geometryCollection = new GeometryCollection(geometries, srid);
geometryCollection.hasM = true;
return geometryCollection;
};
GeometryCollection.ZM = function (geometries, srid) {
var geometryCollection = new GeometryCollection(geometries, srid);
geometryCollection.hasZ = true;
geometryCollection.hasM = true;
return geometryCollection;
};
GeometryCollection._parseWkt = function (value, options) {
var geometryCollection = new GeometryCollection();
geometryCollection.srid = options.srid;
geometryCollection.hasZ = options.hasZ;
geometryCollection.hasM = options.hasM;
if (value.isMatch(['EMPTY']))
return geometryCollection;
value.expectGroupStart();
do {
geometryCollection.geometries.push(Geometry.parse(value));
} while (value.isMatch([',']));
value.expectGroupEnd();
return geometryCollection;
};
GeometryCollection._parseWkb = function (value, options) {
var geometryCollection = new GeometryCollection();
geometryCollection.srid = options.srid;
geometryCollection.hasZ = options.hasZ;
geometryCollection.hasM = options.hasM;
var geometryCount = value.readUInt32();
for (var i = 0; i < geometryCount; i++)
geometryCollection.geometries.push(Geometry.parse(value, options));
return geometryCollection;
};
GeometryCollection._parseTwkb = function (value, options) {
var geometryCollection = new GeometryCollection();
geometryCollection.hasZ = options.hasZ;
geometryCollection.hasM = options.hasM;
if (options.isEmpty)
return geometryCollection;
var geometryCount = value.readVarInt();
for (var i = 0; i < geometryCount; i++)
geometryCollection.geometries.push(Geometry.parseTwkb(value));
return geometryCollection;
};
GeometryCollection._parseGeoJSON = function (value) {
var geometryCollection = new GeometryCollection();
for (var i = 0; i < value.geometries.length; i++)
geometryCollection.geometries.push(Geometry._parseGeoJSON(value.geometries[i], true));
if (geometryCollection.geometries.length > 0)
geometryCollection.hasZ = geometryCollection.geometries[0].hasZ;
return geometryCollection;
};
GeometryCollection.prototype.toWkt = function () {
if (this.geometries.length === 0)
return this._getWktType(Types.wkt.GeometryCollection, true);
var wkt = this._getWktType(Types.wkt.GeometryCollection, false) + '(';
for (var i = 0; i < this.geometries.length; i++)
wkt += this.geometries[i].toWkt() + ',';
wkt = wkt.slice(0, -1);
wkt += ')';
return wkt;
};
GeometryCollection.prototype.toWkb = function () {
var wkb = new BinaryWriter(this._getWkbSize());
wkb.writeInt8(1);
this._writeWkbType(wkb, Types.wkb.GeometryCollection);
wkb.writeUInt32LE(this.geometries.length);
for (var i = 0; i < this.geometries.length; i++)
wkb.writeBuffer(this.geometries[i].toWkb({ srid: this.srid }));
return wkb.buffer;
};
GeometryCollection.prototype.toTwkb = function () {
var twkb = new BinaryWriter(0, true);
var precision = Geometry.getTwkbPrecision(5, 0, 0);
var isEmpty = this.geometries.length === 0;
this._writeTwkbHeader(twkb, Types.wkb.GeometryCollection, precision, isEmpty);
if (this.geometries.length > 0) {
twkb.writeVarInt(this.geometries.length);
for (var i = 0; i < this.geometries.length; i++)
twkb.writeBuffer(this.geometries[i].toTwkb());
}
return twkb.buffer;
};
GeometryCollection.prototype._getWkbSize = function () {
var size = 1 + 4 + 4;
for (var i = 0; i < this.geometries.length; i++)
size += this.geometries[i]._getWkbSize();
return size;
};
GeometryCollection.prototype.toGeoJSON = function (options) {
var geoJSON = Geometry.prototype.toGeoJSON.call(this, options);
geoJSON.type = Types.geoJSON.GeometryCollection;
geoJSON.geometries = [];
for (var i = 0; i < this.geometries.length; i++)
geoJSON.geometries.push(this.geometries[i].toGeoJSON());
return geoJSON;
};
},{"./binarywriter":2,"./geometry":3,"./types":11,"util":20}],5:[function(require,module,exports){
module.exports = LineString;
var util = require('util');
var Geometry = require('./geometry');
var Types = require('./types');
var Point = require('./point');
var BinaryWriter = require('./binarywriter');
function LineString(points, srid) {
Geometry.call(this);
this.points = points || [];
this.srid = srid;
if (this.points.length > 0) {
this.hasZ = this.points[0].hasZ;
this.hasM = this.points[0].hasM;
}
}
util.inherits(LineString, Geometry);
LineString.Z = function (points, srid) {
var lineString = new LineString(points, srid);
lineString.hasZ = true;
return lineString;
};
LineString.M = function (points, srid) {
var lineString = new LineString(points, srid);
lineString.hasM = true;
return lineString;
};
LineString.ZM = function (points, srid) {
var lineString = new LineString(points, srid);
lineString.hasZ = true;
lineString.hasM = true;
return lineString;
};
LineString._parseWkt = function (value, options) {
var lineString = new LineString();
lineString.srid = options.srid;
lineString.hasZ = options.hasZ;
lineString.hasM = options.hasM;
if (value.isMatch(['EMPTY']))
return lineString;
value.expectGroupStart();
lineString.points.push.apply(lineString.points, value.matchCoordinates(options));
value.expectGroupEnd();
return lineString;
};
LineString._parseWkb = function (value, options) {
var lineString = new LineString();
lineString.srid = options.srid;
lineString.hasZ = options.hasZ;
lineString.hasM = options.hasM;
var pointCount = value.readUInt32();
for (var i = 0; i < pointCount; i++)
lineString.points.push(Point._readWkbPoint(value, options));
return lineString;
};
LineString._parseTwkb = function (value, options) {
var lineString = new LineString();
lineString.hasZ = options.hasZ;
lineString.hasM = options.hasM;
if (options.isEmpty)
return lineString;
var previousPoint = new Point(0, 0, options.hasZ ? 0 : undefined, options.hasM ? 0 : undefined);
var pointCount = value.readVarInt();
for (var i = 0; i < pointCount; i++)
lineString.points.push(Point._readTwkbPoint(value, options, previousPoint));
return lineString;
};
LineString._parseGeoJSON = function (value) {
var lineString = new LineString();
if (value.coordinates.length > 0)
lineString.hasZ = value.coordinates[0].length > 2;
for (var i = 0; i < value.coordinates.length; i++)
lineString.points.push(Point._readGeoJSONPoint(value.coordinates[i]));
return lineString;
};
LineString.prototype.toWkt = function () {
if (this.points.length === 0)
return this._getWktType(Types.wkt.LineString, true);
return this._getWktType(Types.wkt.LineString, false) + this._toInnerWkt();
};
LineString.prototype._toInnerWkt = function () {
var innerWkt = '(';
for (var i = 0; i < this.points.length; i++)
innerWkt += this._getWktCoordinate(this.points[i]) + ',';
innerWkt = innerWkt.slice(0, -1);
innerWkt += ')';
return innerWkt;
};
LineString.prototype.toWkb = function (parentOptions) {
var wkb = new BinaryWriter(this._getWkbSize());
wkb.writeInt8(1);
this._writeWkbType(wkb, Types.wkb.LineString, parentOptions);
wkb.writeUInt32LE(this.points.length);
for (var i = 0; i < this.points.length; i++)
this.points[i]._writeWkbPoint(wkb);
return wkb.buffer;
};
LineString.prototype.toTwkb = function () {
var twkb = new BinaryWriter(0, true);
var precision = Geometry.getTwkbPrecision(5, 0, 0);
var isEmpty = this.points.length === 0;
this._writeTwkbHeader(twkb, Types.wkb.LineString, precision, isEmpty);
if (this.points.length > 0) {
twkb.writeVarInt(this.points.length);
var previousPoint = new Point(0, 0, 0, 0);
for (var i = 0; i < this.points.length; i++)
this.points[i]._writeTwkbPoint(twkb, precision, previousPoint);
}
return twkb.buffer;
};
LineString.prototype._getWkbSize = function () {
var coordinateSize = 16;
if (this.hasZ)
coordinateSize += 8;
if (this.hasM)
coordinateSize += 8;
return 1 + 4 + 4 + (this.points.length * coordinateSize);
};
LineString.prototype.toGeoJSON = function (options) {
var geoJSON = Geometry.prototype.toGeoJSON.call(this, options);
geoJSON.type = Types.geoJSON.LineString;
geoJSON.coordinates = [];
for (var i = 0; i < this.points.length; i++) {
if (this.hasZ)
geoJSON.coordinates.push([this.points[i].x, this.points[i].y, this.points[i].z]);
else
geoJSON.coordinates.push([this.points[i].x, this.points[i].y]);
}
return geoJSON;
};
},{"./binarywriter":2,"./geometry":3,"./point":9,"./types":11,"util":20}],6:[function(require,module,exports){
module.exports = MultiLineString;
var util = require('util');
var Types = require('./types');
var Geometry = require('./geometry');
var Point = require('./point');
var LineString = require('./linestring');
var BinaryWriter = require('./binarywriter');
function MultiLineString(lineStrings, srid) {
Geometry.call(this);
this.lineStrings = lineStrings || [];
this.srid = srid;
if (this.lineStrings.length > 0) {
this.hasZ = this.lineStrings[0].hasZ;
this.hasM = this.lineStrings[0].hasM;
}
}
util.inherits(MultiLineString, Geometry);
MultiLineString.Z = function (lineStrings, srid) {
var multiLineString = new MultiLineString(lineStrings, srid);
multiLineString.hasZ = true;
return multiLineString;
};
MultiLineString.M = function (lineStrings, srid) {
var multiLineString = new MultiLineString(lineStrings, srid);
multiLineString.hasM = true;
return multiLineString;
};
MultiLineString.ZM = function (lineStrings, srid) {
var multiLineString = new MultiLineString(lineStrings, srid);
multiLineString.hasZ = true;
multiLineString.hasM = true;
return multiLineString;
};
MultiLineString._parseWkt = function (value, options) {
var multiLineString = new MultiLineString();
multiLineString.srid = options.srid;
multiLineString.hasZ = options.hasZ;
multiLineString.hasM = options.hasM;
if (value.isMatch(['EMPTY']))
return multiLineString;
value.expectGroupStart();
do {
value.expectGroupStart();
multiLineString.lineStrings.push(new LineString(value.matchCoordinates(options)));
value.expectGroupEnd();
} while (value.isMatch([',']));
value.expectGroupEnd();
return multiLineString;
};
MultiLineString._parseWkb = function (value, options) {
var multiLineString = new MultiLineString();
multiLineString.srid = options.srid;
multiLineString.hasZ = options.hasZ;
multiLineString.hasM = options.hasM;
var lineStringCount = value.readUInt32();
for (var i = 0; i < lineStringCount; i++)
multiLineString.lineStrings.push(Geometry.parse(value, options));
return multiLineString;
};
MultiLineString._parseTwkb = function (value, options) {
var multiLineString = new MultiLineString();
multiLineString.hasZ = options.hasZ;
multiLineString.hasM = options.hasM;
if (options.isEmpty)
return multiLineString;
var previousPoint = new Point(0, 0, options.hasZ ? 0 : undefined, options.hasM ? 0 : undefined);
var lineStringCount = value.readVarInt();
for (var i = 0; i < lineStringCount; i++) {
var lineString = new LineString();
lineString.hasZ = options.hasZ;
lineString.hasM = options.hasM;
var pointCount = value.readVarInt();
for (var j = 0; j < pointCount; j++)
lineString.points.push(Point._readTwkbPoint(value, options, previousPoint));
multiLineString.lineStrings.push(lineString);
}
return multiLineString;
};
MultiLineString._parseGeoJSON = function (value) {
var multiLineString = new MultiLineString();
if (value.coordinates.length > 0 && value.coordinates[0].length > 0)
multiLineString.hasZ = value.coordinates[0][0].length > 2;
for (var i = 0; i < value.coordinates.length; i++)
multiLineString.lineStrings.push(LineString._parseGeoJSON({ coordinates: value.coordinates[i] }));
return multiLineString;
};
MultiLineString.prototype.toWkt = function () {
if (this.lineStrings.length === 0)
return this._getWktType(Types.wkt.MultiLineString, true);
var wkt = this._getWktType(Types.wkt.MultiLineString, false) + '(';
for (var i = 0; i < this.lineStrings.length; i++)
wkt += this.lineStrings[i]._toInnerWkt() + ',';
wkt = wkt.slice(0, -1);
wkt += ')';
return wkt;
};
MultiLineString.prototype.toWkb = function () {
var wkb = new BinaryWriter(this._getWkbSize());
wkb.writeInt8(1);
this._writeWkbType(wkb, Types.wkb.MultiLineString);
wkb.writeUInt32LE(this.lineStrings.length);
for (var i = 0; i < this.lineStrings.length; i++)
wkb.writeBuffer(this.lineStrings[i].toWkb({ srid: this.srid }));
return wkb.buffer;
};
MultiLineString.prototype.toTwkb = function () {
var twkb = new BinaryWriter(0, true);
var precision = Geometry.getTwkbPrecision(5, 0, 0);
var isEmpty = this.lineStrings.length === 0;
this._writeTwkbHeader(twkb, Types.wkb.MultiLineString, precision, isEmpty);
if (this.lineStrings.length > 0) {
twkb.writeVarInt(this.lineStrings.length);
var previousPoint = new Point(0, 0, 0, 0);
for (var i = 0; i < this.lineStrings.length; i++) {
twkb.writeVarInt(this.lineStrings[i].points.length);
for (var j = 0; j < this.lineStrings[i].points.length; j++)
this.lineStrings[i].points[j]._writeTwkbPoint(twkb, precision, previousPoint);
}
}
return twkb.buffer;
};
MultiLineString.prototype._getWkbSize = function () {
var size = 1 + 4 + 4;
for (var i = 0; i < this.lineStrings.length; i++)
size += this.lineStrings[i]._getWkbSize();
return size;
};
MultiLineString.prototype.toGeoJSON = function (options) {
var geoJSON = Geometry.prototype.toGeoJSON.call(this, options);
geoJSON.type = Types.geoJSON.MultiLineString;
geoJSON.coordinates = [];
for (var i = 0; i < this.lineStrings.length; i++)
geoJSON.coordinates.push(this.lineStrings[i].toGeoJSON().coordinates);
return geoJSON;
};
},{"./binarywriter":2,"./geometry":3,"./linestring":5,"./point":9,"./types":11,"util":20}],7:[function(require,module,exports){
module.exports = MultiPoint;
var util = require('util');
var Types = require('./types');
var Geometry = require('./geometry');
var Point = require('./point');
var BinaryWriter = require('./binarywriter');
function MultiPoint(points, srid) {
Geometry.call(this);
this.points = points || [];
this.srid = srid;
if (this.points.length > 0) {
this.hasZ = this.points[0].hasZ;
this.hasM = this.points[0].hasM;
}
}
util.inherits(MultiPoint, Geometry);
MultiPoint.Z = function (points, srid) {
var multiPoint = new MultiPoint(points, srid);
multiPoint.hasZ = true;
return multiPoint;
};
MultiPoint.M = function (points, srid) {
var multiPoint = new MultiPoint(points, srid);
multiPoint.hasM = true;
return multiPoint;
};
MultiPoint.ZM = function (points, srid) {
var multiPoint = new MultiPoint(points, srid);
multiPoint.hasZ = true;
multiPoint.hasM = true;
return multiPoint;
};
MultiPoint._parseWkt = function (value, options) {
var multiPoint = new MultiPoint();
multiPoint.srid = options.srid;
multiPoint.hasZ = options.hasZ;
multiPoint.hasM = options.hasM;
if (value.isMatch(['EMPTY']))
return multiPoint;
value.expectGroupStart();
multiPoint.points.push.apply(multiPoint.points, value.matchCoordinates(options));
value.expectGroupEnd();
return multiPoint;
};
MultiPoint._parseWkb = function (value, options) {
var multiPoint = new MultiPoint();
multiPoint.srid = options.srid;
multiPoint.hasZ = options.hasZ;
multiPoint.hasM = options.hasM;
var pointCount = value.readUInt32();
for (var i = 0; i < pointCount; i++)
multiPoint.points.push(Geometry.parse(value, options));
return multiPoint;
};
MultiPoint._parseTwkb = function (value, options) {
var multiPoint = new MultiPoint();
multiPoint.hasZ = options.hasZ;
multiPoint.hasM = options.hasM;
if (options.isEmpty)
return multiPoint;
var previousPoint = new Point(0, 0, options.hasZ ? 0 : undefined, options.hasM ? 0 : undefined);
var pointCount = value.readVarInt();
for (var i = 0; i < pointCount; i++)
multiPoint.points.push(Point._readTwkbPoint(value, options, previousPoint));
return multiPoint;
};
MultiPoint._parseGeoJSON = function (value) {
var multiPoint = new MultiPoint();
if (value.coordinates.length > 0)
multiPoint.hasZ = value.coordinates[0].length > 2;
for (var i = 0; i < value.coordinates.length; i++)
multiPoint.points.push(Point._parseGeoJSON({ coordinates: value.coordinates[i] }));
return multiPoint;
};
MultiPoint.prototype.toWkt = function () {
if (this.points.length === 0)
return this._getWktType(Types.wkt.MultiPoint, true);
var wkt = this._getWktType(Types.wkt.MultiPoint, false) + '(';
for (var i = 0; i < this.points.length; i++)
wkt += this._getWktCoordinate(this.points[i]) + ',';
wkt = wkt.slice(0, -1);
wkt += ')';
return wkt;
};
MultiPoint.prototype.toWkb = function () {
var wkb = new BinaryWriter(this._getWkbSize());
wkb.writeInt8(1);
this._writeWkbType(wkb, Types.wkb.MultiPoint);
wkb.writeUInt32LE(this.points.length);
for (var i = 0; i < this.points.length; i++)
wkb.writeBuffer(this.points[i].toWkb({ srid: this.srid }));
return wkb.buffer;
};
MultiPoint.prototype.toTwkb = function () {
var twkb = new BinaryWriter(0, true);
var precision = Geometry.getTwkbPrecision(5, 0, 0);
var isEmpty = this.points.length === 0;
this._writeTwkbHeader(twkb, Types.wkb.MultiPoint, precision, isEmpty);
if (this.points.length > 0) {
twkb.writeVarInt(this.points.length);
var previousPoint = new Point(0, 0, 0, 0);
for (var i = 0; i < this.points.length; i++)
this.points[i]._writeTwkbPoint(twkb, precision, previousPoint);
}
return twkb.buffer;
};
MultiPoint.prototype._getWkbSize = function () {
var coordinateSize = 16;
if (this.hasZ)
coordinateSize += 8;
if (this.hasM)
coordinateSize += 8;
coordinateSize += 5;
return 1 + 4 + 4 + (this.points.length * coordinateSize);
};
MultiPoint.prototype.toGeoJSON = function (options) {
var geoJSON = Geometry.prototype.toGeoJSON.call(this, options);
geoJSON.type = Types.geoJSON.MultiPoint;
geoJSON.coordinates = [];
for (var i = 0; i < this.points.length; i++)
geoJSON.coordinates.push(this.points[i].toGeoJSON().coordinates);
return geoJSON;
};
},{"./binarywriter":2,"./geometry":3,"./point":9,"./types":11,"util":20}],8:[function(require,module,exports){
module.exports = MultiPolygon;
var util = require('util');
var Types = require('./types');
var Geometry = require('./geometry');
var Point = require('./point');
var Polygon = require('./polygon');
var BinaryWriter = require('./binarywriter');
function MultiPolygon(polygons, srid) {
Geometry.call(this);
this.polygons = polygons || [];
this.srid = srid;
if (this.polygons.length > 0) {
this.hasZ = this.polygons[0].hasZ;
this.hasM = this.polygons[0].hasM;
}
}
util.inherits(MultiPolygon, Geometry);
MultiPolygon.Z = function (polygons, srid) {
var multiPolygon = new MultiPolygon(polygons, srid);
multiPolygon.hasZ = true;
return multiPolygon;
};
MultiPolygon.M = function (polygons, srid) {
var multiPolygon = new MultiPolygon(polygons, srid);
multiPolygon.hasM = true;
return multiPolygon;
};
MultiPolygon.ZM = function (polygons, srid) {
var multiPolygon = new MultiPolygon(polygons, srid);
multiPolygon.hasZ = true;
multiPolygon.hasM = true;
return multiPolygon;
};
MultiPolygon._parseWkt = function (value, options) {
var multiPolygon = new MultiPolygon();
multiPolygon.srid = options.srid;
multiPolygon.hasZ = options.hasZ;
multiPolygon.hasM = options.hasM;
if (value.isMatch(['EMPTY']))
return multiPolygon;
value.expectGroupStart();
do {
value.expectGroupStart();
var exteriorRing = [];
var interiorRings = [];
value.expectGroupStart();
exteriorRing.push.apply(exteriorRing, value.matchCoordinates(options));
value.expectGroupEnd();
while (value.isMatch([','])) {
value.expectGroupStart();
interiorRings.push(value.matchCoordinates(options));
value.expectGroupEnd();
}
multiPolygon.polygons.push(new Polygon(exteriorRing, interiorRings));
value.expectGroupEnd();
} while (value.isMatch([',']));
value.expectGroupEnd();
return multiPolygon;
};
MultiPolygon._parseWkb = function (value, options) {
var multiPolygon = new MultiPolygon();
multiPolygon.srid = options.srid;
multiPolygon.hasZ = options.hasZ;
multiPolygon.hasM = options.hasM;
var polygonCount = value.readUInt32();
for (var i = 0; i < polygonCount; i++)
multiPolygon.polygons.push(Geometry.parse(value, options));
return multiPolygon;
};
MultiPolygon._parseTwkb = function (value, options) {
var multiPolygon = new MultiPolygon();
multiPolygon.hasZ = options.hasZ;
multiPolygon.hasM = options.hasM;
if (options.isEmpty)
return multiPolygon;
var previousPoint = new Point(0, 0, options.hasZ ? 0 : undefined, options.hasM ? 0 : undefined);
var polygonCount = value.readVarInt();
for (var i = 0; i < polygonCount; i++) {
var polygon = new Polygon();
polygon.hasZ = options.hasZ;
polygon.hasM = options.hasM;
var ringCount = value.readVarInt();
var exteriorRingCount = value.readVarInt();
for (var j = 0; j < exteriorRingCount; j++)
polygon.exteriorRing.push(Point._readTwkbPoint(value, options, previousPoint));
for (j = 1; j < ringCount; j++) {
var interiorRing = [];
var interiorRingCount = value.readVarInt();
for (var k = 0; k < interiorRingCount; k++)
interiorRing.push(Point._readTwkbPoint(value, options, previousPoint));
polygon.interiorRings.push(interiorRing);
}
multiPolygon.polygons.push(polygon);
}
return multiPolygon;
};
MultiPolygon._parseGeoJSON = function (value) {
var multiPolygon = new MultiPolygon();
if (value.coordinates.length > 0 && value.coordinates[0].length > 0 && value.coordinates[0][0].length > 0)
multiPolygon.hasZ = value.coordinates[0][0][0].length > 2;
for (var i = 0; i < value.coordinates.length; i++)
multiPolygon.polygons.push(Polygon._parseGeoJSON({ coordinates: value.coordinates[i] }));
return multiPolygon;
};
MultiPolygon.prototype.toWkt = function () {
if (this.polygons.length === 0)
return this._getWktType(Types.wkt.MultiPolygon, true);
var wkt = this._getWktType(Types.wkt.MultiPolygon, false) + '(';
for (var i = 0; i < this.polygons.length; i++)
wkt += this.polygons[i]._toInnerWkt() + ',';
wkt = wkt.slice(0, -1);
wkt += ')';
return wkt;
};
MultiPolygon.prototype.toWkb = function () {
var wkb = new BinaryWriter(this._getWkbSize());
wkb.writeInt8(1);
this._writeWkbType(wkb, Types.wkb.MultiPolygon);
wkb.writeUInt32LE(this.polygons.length);
for (var i = 0; i < this.polygons.length; i++)
wkb.writeBuffer(this.polygons[i].toWkb({ srid: this.srid }));
return wkb.buffer;
};
MultiPolygon.prototype.toTwkb = function () {
var twkb = new BinaryWriter(0, true);
var precision = Geometry.getTwkbPrecision(5, 0, 0);
var isEmpty = this.polygons.length === 0;
this._writeTwkbHeader(twkb, Types.wkb.MultiPolygon, precision, isEmpty);
if (this.polygons.length > 0) {
twkb.writeVarInt(this.polygons.length);
var previousPoint = new Point(0, 0, 0, 0);
for (var i = 0; i < this.polygons.length; i++) {
twkb.writeVarInt(1 + this.polygons[i].interiorRings.length);
twkb.writeVarInt(this.polygons[i].exteriorRing.length);
for (var j = 0; j < this.polygons[i].exteriorRing.length; j++)
this.polygons[i].exteriorRing[j]._writeTwkbPoint(twkb, precision, previousPoint);
for (j = 0; j < this.polygons[i].interiorRings.length; j++) {
twkb.writeVarInt(this.polygons[i].interiorRings[j].length);
for (var k = 0; k < this.polygons[i].interiorRings[j].length; k++)
this.polygons[i].interiorRings[j][k]._writeTwkbPoint(twkb, precision, previousPoint);
}
}
}
return twkb.buffer;
};
MultiPolygon.prototype._getWkbSize = function () {
var size = 1 + 4 + 4;
for (var i = 0; i < this.polygons.length; i++)
size += this.polygons[i]._getWkbSize();
return size;
};
MultiPolygon.prototype.toGeoJSON = function (options) {
var geoJSON = Geometry.prototype.toGeoJSON.call(this, options);
geoJSON.type = Types.geoJSON.MultiPolygon;
geoJSON.coordinates = [];
for (var i = 0; i < this.polygons.length; i++)
geoJSON.coordinates.push(this.polygons[i].toGeoJSON().coordinates);
return geoJSON;
};
},{"./binarywriter":2,"./geometry":3,"./point":9,"./polygon":10,"./types":11,"util":20}],9:[function(require,module,exports){
module.exports = Point;
var util = require('util');
var Geometry = require('./geometry');
var Types = require('./types');
var BinaryWriter = require('./binarywriter');
var ZigZag = require('./zigzag.js');
function Point(x, y, z, m, srid) {
Geometry.call(this);
this.x = x;
this.y = y;
this.z = z;
this.m = m;
this.srid = srid;
this.hasZ = typeof this.z !== 'undefined';
this.hasM = typeof this.m !== 'undefined';
}
util.inherits(Point, Geometry);
Point.Z = function (x, y, z, srid) {
var point = new Point(x, y, z, undefined, srid);
point.hasZ = true;
return point;
};
Point.M = function (x, y, m, srid) {
var point = new Point(x, y, undefined, m, srid);
point.hasM = true;
return point;
};
Point.ZM = function (x, y, z, m, srid) {
var point = new Point(x, y, z, m, srid);
point.hasZ = true;
point.hasM = true;
return point;
};
Point._parseWkt = function (value, options) {
var point = new Point();
point.srid = options.srid;
point.hasZ = options.hasZ;
point.hasM = options.hasM;
if (value.isMatch(['EMPTY']))
return point;
value.expectGroupStart();
var coordinate = value.matchCoordinate(options);
point.x = coordinate.x;
point.y = coordinate.y;
point.z = coordinate.z;
point.m = coordinate.m;
value.expectGroupEnd();
return point;
};
Point._parseWkb = function (value, options) {
var point = Point._readWkbPoint(value, options);
point.srid = options.srid;
return point;
};
Point._readWkbPoint = function (value, options) {
return new Point(value.readDouble(), value.readDouble(),
options.hasZ ? value.readDouble() : undefined,
options.hasM ? value.readDouble() : undefined);
};
Point._parseTwkb = function (value, options) {
var point = new Point();
point.hasZ = options.hasZ;
point.hasM = options.hasM;
if (options.isEmpty)
return point;
point.x = ZigZag.decode(value.readVarInt()) / options.precisionFactor;
point.y = ZigZag.decode(value.readVarInt()) / options.precisionFactor;
point.z = options.hasZ ? ZigZag.decode(value.readVarInt()) / options.zPrecisionFactor : undefined;
point.m = options.hasM ? ZigZag.decode(value.readVarInt()) / options.mPrecisionFactor : undefined;
return point;
};
Point._readTwkbPoint = function (value, options, previousPoint) {
previousPoint.x += ZigZag.decode(value.readVarInt()) / options.precisionFactor;
previousPoint.y += ZigZag.decode(value.readVarInt()) / options.precisionFactor;
if (options.hasZ)
previousPoint.z += ZigZag.decode(value.readVarInt()) / options.zPrecisionFactor;
if (options.hasM)
previousPoint.m += ZigZag.decode(value.readVarInt()) / options.mPrecisionFactor;
return new Point(previousPoint.x, previousPoint.y, previousPoint.z, previousPoint.m);
};
Point._parseGeoJSON = function (value) {
return Point._readGeoJSONPoint(value.coordinates);
};
Point._readGeoJSONPoint = function (coordinates) {
if (coordinates.length === 0)
return new Point();
if (coordinates.length > 2)
return new Point(coordinates[0], coordinates[1], coordinates[2]);
return new Point(coordinates[0], coordinates[1]);
};
Point.prototype.toWkt = function () {
if (typeof this.x === 'undefined' && typeof this.y === 'undefined' &&
typeof this.z === 'undefined' && typeof this.m === 'undefined')
return this._getWktType(Types.wkt.Point, true);
return this._getWktType(Types.wkt.Point, false) + '(' + this._getWktCoordinate(this) + ')';
};
Point.prototype.toWkb = function (parentOptions) {
var wkb = new BinaryWriter(this._getWkbSize());
wkb.writeInt8(1);
this._writeWkbType(wkb, Types.wkb.Point, parentOptions);
if (typeof this.x === 'undefined' && typeof this.y === 'undefined') {
wkb.writeDoubleLE(NaN);
wkb.writeDoubleLE(NaN);
if (this.hasZ)
wkb.writeDoubleLE(NaN);
if (this.hasM)
wkb.writeDoubleLE(NaN);
}
else {
this._writeWkbPoint(wkb);
}
return wkb.buffer;
};
Point.prototype._writeWkbPoint = function (wkb) {
wkb.writeDoubleLE(this.x);
wkb.writeDoubleLE(this.y);
if (this.hasZ)
wkb.writeDoubleLE(this.z);
if (this.hasM)
wkb.writeDoubleLE(this.m);
};
Point.prototype.toTwkb = function () {
var twkb = new BinaryWriter(0, true);
var precision = Geometry.getTwkbPrecision(5, 0, 0);
var isEmpty = typeof this.x === 'undefined' && typeof this.y === 'undefined';
this._writeTwkbHeader(twkb, Types.wkb.Point, precision, isEmpty);
if (!isEmpty)
this._writeTwkbPoint(twkb, precision, new Point(0, 0, 0, 0));
return twkb.buffer;
};
Point.prototype._writeTwkbPoint = function (twkb, precision, previousPoint) {
var x = this.x * precision.xyFactor;
var y = this.y * precision.xyFactor;
var z = this.z * precision.zFactor;
var m = this.m * precision.mFactor;
twkb.writeVarInt(ZigZag.encode(x - previousPoint.x));
twkb.writeVarInt(ZigZag.encode(y - previousPoint.y));
if (this.hasZ)
twkb.writeVarInt(ZigZag.encode(z - previousPoint.z));
if (this.hasM)
twkb.writeVarInt(ZigZag.encode(m - previousPoint.m));
previousPoint.x = x;
previousPoint.y = y;
previousPoint.z = z;
previousPoint.m = m;
};
Point.prototype._getWkbSize = function () {
var size = 1 + 4 + 8 + 8;
if (this.hasZ)
size += 8;
if (this.hasM)
size += 8;
return size;
};
Point.prototype.toGeoJSON = function (options) {
var geoJSON = Geometry.prototype.toGeoJSON.call(this, options);
geoJSON.type = Types.geoJSON.Point;
if (typeof this.x === 'undefined' && typeof this.y === 'undefined')
geoJSON.coordinates = [];
else if (typeof this.z !== 'undefined')
geoJSON.coordinates = [this.x, this.y, this.z];
else
geoJSON.coordinates = [this.x, this.y];
return geoJSON;
};
},{"./binarywriter":2,"./geometry":3,"./types":11,"./zigzag.js":13,"util":20}],10:[function(require,module,exports){
module.exports = Polygon;
var util = require('util');
var Geometry = require('./geometry');
var Types = require('./types');
var Point = require('./point');
var BinaryWriter = require('./binarywriter');
function Polygon(exteriorRing, interiorRings, srid) {
Geometry.call(this);
this.exteriorRing = exteriorRing || [];
this.interiorRings = interiorRings || [];
this.srid = srid;
if (this.exteriorRing.length > 0) {
this.hasZ = this.exteriorRing[0].hasZ;
this.hasM = this.exteriorRing[0].hasM;
}
}
util.inherits(Polygon, Geometry);
Polygon.Z = function (exteriorRing, interiorRings, srid) {
var polygon = new Polygon(exteriorRing, interiorRings, srid);
polygon.hasZ = true;
return polygon;
};
Polygon.M = function (exteriorRing, interiorRings, srid) {
var polygon = new Polygon(exteriorRing, interiorRings, srid);
polygon.hasM = true;
return polygon;
};
Polygon.ZM = function (exteriorRing, interiorRings, srid) {
var polygon = new Polygon(exteriorRing, interiorRings, srid);
polygon.hasZ = true;
polygon.hasM = true;
return polygon;
};
Polygon._parseWkt = function (value, options) {
var polygon = new Polygon();
polygon.srid = options.srid;
polygon.hasZ = options.hasZ;
polygon.hasM = options.hasM;
if (value.isMatch(['EMPTY']))
return polygon;
value.expectGroupStart();
value.expectGroupStart();
polygon.exteriorRing.push.apply(polygon.exteriorRing, value.matchCoordinates(options));
value.expectGroupEnd();
while (value.isMatch([','])) {
value.expectGroupStart();
polygon.interiorRings.push(value.matchCoordinates(options));
value.expectGroupEnd();
}
value.expectGroupEnd();
return polygon;
};
Polygon._parseWkb = function (value, options) {
var polygon = new Polygon();
polygon.srid = options.srid;
polygon.hasZ = options.hasZ;
polygon.hasM = options.hasM;
var ringCount = value.readUInt32();
if (ringCount > 0) {
var exteriorRingCount = value.readUInt32();
for (var i = 0; i < exteriorRingCount; i++)
polygon.exteriorRing.push(Point._readWkbPoint(value, options));
for (i = 1; i < ringCount; i++) {
var interiorRing = [];
var interiorRingCount = value.readUInt32();
for (var j = 0; j < interiorRingCount; j++)
interiorRing.push(Point._readWkbPoint(value, options));
polygon.interiorRings.push(interiorRing);
}
}
return polygon;
};
Polygon._parseTwkb = function (value, options) {
var polygon = new Polygon();
polygon.hasZ = options.hasZ;
polygon.hasM = options.hasM;
if (options.isEmpty)
return polygon;
var previousPoint = new Point(0, 0, options.hasZ ? 0 : undefined, options.hasM ? 0 : undefined);
var ringCount = value.readVarInt();
var exteriorRingCount = value.readVarInt();
for (var i = 0; i < exteriorRingCount; i++)
polygon.exteriorRing.push(Point._readTwkbPoint(value, options, previousPoint));
for (i = 1; i < ringCount; i++) {
var interiorRing = [];
var interiorRingCount = value.readVarInt();
for (var j = 0; j < interiorRingCount; j++)
interiorRing.push(Point._readTwkbPoint(value, options, previousPoint));
polygon.interiorRings.push(interiorRing);
}
return polygon;
};
Polygon._parseGeoJSON = function (value) {
var polygon = new Polygon();
if (value.coordinates.length > 0 && value.coordinates[0].length > 0)
polygon.hasZ = value.coordinates[0][0].length > 2;
for (var i = 0; i < value.coordinates.length; i++) {
if (i > 0)
polygon.interiorRings.push([]);
for (var j = 0; j < value.coordinates[i].length; j++) {
if (i === 0)
polygon.exteriorRing.push(Point._readGeoJSONPoint(value.coordinates[i][j]));
else
polygon.interiorRings[i - 1].push(Point._readGeoJSONPoint(value.coordinates[i][j]));
}
}
return polygon;
};
Polygon.prototype.toWkt = function () {
if (this.exteriorRing.length === 0)
return this._getWktType(Types.wkt.Polygon, true);
return this._getWktType(Types.wkt.Polygon, false) + this._toInnerWkt();
};
Polygon.prototype._toInnerWkt = function () {
var innerWkt = '((';
for (var i = 0; i < this.exteriorRing.length; i++)
innerWkt += this._getWktCoordinate(this.exteriorRing[i]) + ',';
innerWkt = innerWkt.slice(0, -1);
innerWkt += ')';
for (i = 0; i < this.interiorRings.length; i++) {
innerWkt += ',(';
for (var j = 0; j < this.interiorRings[i].length; j++) {
innerWkt += this._getWktCoordinate(this.interiorRings[i][j]) + ',';
}
innerWkt = innerWkt.slice(0, -1);
innerWkt += ')';
}
innerWkt += ')';
return innerWkt;
};
Polygon.prototype.toWkb = function (parentOptions) {
var wkb = new BinaryWriter(this._getWkbSize());
wkb.writeInt8(1);
this._writeWkbType(wkb, Types.wkb.Polygon, parentOptions);
if (this.exteriorRing.length > 0) {
wkb.writeUInt32LE(1 + this.interiorRings.length);
wkb.writeUInt32LE(this.exteriorRing.length);
}
else {
wkb.writeUInt32LE(0);
}
for (var i = 0; i < this.exteriorRing.length; i++)
this.exteriorRing[i]._writeWkbPoint(wkb);
for (i = 0; i < this.interiorRings.length; i++) {
wkb.writeUInt32LE(this.interiorRings[i].length);
for (var j = 0; j < this.interiorRings[i].length; j++)
this.interiorRings[i][j]._writeWkbPoint(wkb);
}
return wkb.buffer;
};
Polygon.prototype.toTwkb = function () {
var twkb = new BinaryWriter(0, true);
var precision = Geometry.getTwkbPrecision(5, 0, 0);
var isEmpty = this.exteriorRing.length === 0;
this._writeTwkbHeader(twkb, Types.wkb.Polygon, precision, isEmpty);
if (this.exteriorRing.length > 0) {
twkb.writeVarInt(1 + this.interiorRings.length);
twkb.writeVarInt(this.exteriorRing.length);
var previousPoint = new Point(0, 0, 0, 0);
for (var i = 0; i < this.exteriorRing.length; i++)
this.exteriorRing[i]._writeTwkbPoint(twkb, precision, previousPoint);
for (i = 0; i < this.interiorRings.length; i++) {
twkb.writeVarInt(this.interiorRings[i].length);
for (var j = 0; j < this.interiorRings[i].length; j++)
this.interiorRings[i][j]._writeTwkbPoint(twkb, precision, previousPoint);
}
}
return twkb.buffer;
};
Polygon.prototype._getWkbSize = function () {
var coordinateSize = 16;
if (this.hasZ)
coordinateSize += 8;
if (this.hasM)
coordinateSize += 8;
var size = 1 + 4 + 4;
if (this.exteriorRing.length > 0)
size += 4 + (this.exteriorRing.length * coordinateSize);
for (var i = 0; i < this.interiorRings.length; i++)
size += 4 + (this.interiorRings[i].length * coordinateSize);
return size;
};
Polygon.prototype.toGeoJSON = function (options) {
var geoJSON = Geometry.prototype.toGeoJSON.call(this, options);
geoJSON.type = Types.geoJSON.Polygon;
geoJSON.coordinates = [];
if (this.exteriorRing.length > 0) {
var exteriorRing = [];
for (var i = 0; i < this.exteriorRing.length; i++) {
if (this.hasZ)
exteriorRing.push([this.exteriorRing[i].x, this.exteriorRing[i].y, this.exteriorRing[i].z]);
else
exteriorRing.push([this.exteriorRing[i].x, this.exteriorRing[i].y]);
}
geoJSON.coordinates.push(exteriorRing);
}
for (var j = 0; j < this.interiorRings.length; j++) {
var interiorRing = [];
for (var k = 0; k < this.interiorRings[j].length; k++) {
if (this.hasZ)
interiorRing.push([this.interiorRings[j][k].x, this.interiorRings[j][k].y, this.interiorRings[j][k].z]);
else
interiorRing.push([this.interiorRings[j][k].x, this.interiorRings[j][k].y]);
}
geoJSON.coordinates.push(interiorRing);
}
return geoJSON;
};
},{"./binarywriter":2,"./geometry":3,"./point":9,"./types":11,"util":20}],11:[function(require,module,exports){
module.exports = {
wkt: {
Point: 'POINT',
LineString: 'LINESTRING',
Polygon: 'POLYGON',
MultiPoint: 'MULTIPOINT',
MultiLineString: 'MULTILINESTRING',
MultiPolygon: 'MULTIPOLYGON',
GeometryCollection: 'GEOMETRYCOLLECTION'
},
wkb: {
Point: 1,
LineString: 2,
Polygon: 3,
MultiPoint: 4,
MultiLineString: 5,
MultiPolygon: 6,
GeometryCollection: 7
},
geoJSON: {
Point: 'Point',
LineString: 'LineString',
Polygon: 'Polygon',
MultiPoint: 'MultiPoint',
MultiLineString: 'MultiLineString',
MultiPolygon: 'MultiPolygon',
GeometryCollection: 'GeometryCollection'
}
};
},{}],12:[function(require,module,exports){
module.exports = WktParser;
var Types = require('./types');
var Point = require('./point');
function WktParser(value) {
this.value = value;
this.position = 0;
}
WktParser.prototype.match = function (tokens) {
this.skipWhitespaces();
for (var i = 0; i < tokens.length; i++) {
if (this.value.substring(this.position).indexOf(tokens[i]) === 0) {
this.position += tokens[i].length;
return tokens[i];
}
}
return null;
};
WktParser.prototype.matchRegex = function (tokens) {
this.skipWhitespaces();
for (var i = 0; i < tokens.length; i++) {
var match = this.value.substring(this.position).match(tokens[i]);
if (match) {
this.position += match[0].length;
return match;
}
}
return null;
};
WktParser.prototype.isMatch = function (tokens) {
this.skipWhitespaces();
for (var i = 0; i < tokens.length; i++) {
if (this.value.substring(this.position).indexOf(tokens[i]) === 0) {
this.position += tokens[i].length;
return true;
}
}
return false;
};
WktParser.prototype.matchType = function () {
var geometryType = this.match([Types.wkt.Point, Types.wkt.LineString, Types.wkt.Polygon, Types.wkt.MultiPoint,
Types.wkt.MultiLineString, Types.wkt.MultiPolygon, Types.wkt.GeometryCollection]);
if (!geometryType)
throw new Error('Expected geometry type');
return geometryType;
};
WktParser.prototype.matchDimension = function () {
var dimension = this.match(['ZM', 'Z', 'M']);
switch (dimension) {
case 'ZM': return { hasZ: true, hasM: true };
case 'Z': return { hasZ: true, hasM: false };
case 'M': return { hasZ: false, hasM: true };
default: return { hasZ: false, hasM: false };
}
};
WktParser.prototype.expectGroupStart = function () {
if (!this.isMatch(['(']))
throw new Error('Expected group start');
};
WktParser.prototype.expectGroupEnd = function () {
if (!this.isMatch([')']))
throw new Error('Expected group end');
};
WktParser.prototype.matchCoordinate = function (options) {
var match;
if (options.hasZ && options.hasM)
match = this.matchRegex([/^(\S*)\s+(\S*)\s+(\S*)\s+([^\s,)]*)/]);
else if (options.hasZ || options.hasM)
match = this.matchRegex([/^(\S*)\s+(\S*)\s+([^\s,)]*)/]);
else
match = this.matchRegex([/^(\S*)\s+([^\s,)]*)/]);
if (!match)
throw new Error('Expected coordinates');
if (options.hasZ && options.hasM)
return new Point(parseFloat(match[1]), parseFloat(match[2]), parseFloat(match[3]), parseFloat(match[4]));
else if (options.hasZ)
return new Point(parseFloat(match[1]), parseFloat(match[2]), parseFloat(match[3]));
else if (options.hasM)
return new Point(parseFloat(match[1]), parseFloat(match[2]), undefined, parseFloat(match[3]));
else
return new Point(parseFloat(match[1]), parseFloat(match[2]));
};
WktParser.prototype.matchCoordinates = function (options) {
var coordinates = [];
do {
var startsWithBracket = this.isMatch(['(']);
coordinates.push(this.matchCoordinate(options));
if (startsWithBracket)
this.expectGroupEnd();
} while (this.isMatch([',']));
return coordinates;
};
WktParser.prototype.skipWhitespaces = function () {
while (this.position < this.value.length && this.value[this.position] === ' ')
this.position++;
};
},{"./point":9,"./types":11}],13:[function(require,module,exports){
module.exports = {
encode: function (value) {
return (value << 1) ^ (value >> 31);
},
decode: function (value) {
return (value >> 1) ^ (-(value & 1));
}
};
},{}],14:[function(require,module,exports){
'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('')
}
},{}],15:[function(require,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
}
},{}],16:[function(require,module,exports){
if (typeof Object.create === 'function') {
// implementation from standard node.js 'util' module
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
});
};
} else {
// old school shim for old browsers
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
var TempCtor = function () {}
TempCtor.prototype = superCtor.prototype
ctor.prototype = new TempCtor()
ctor.prototype.constructor = ctor
}
}
},{}],17:[function(require,module,exports){
/*!
* Determine if an object is a Buffer
*
* @author Feross Aboukhadijeh <https://feross.org>
* @license MIT
*/
// The _isBuffer check is for Safari 5-7 support, because it's missing
// Object.prototype.constructor. Remove this eventually
module.exports = function (obj) {
return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
}
function isBuffer (obj) {
return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
}
// For Node v0.10 support. Remove this eventually.
function isSlowBuffer (obj) {
return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
}
},{}],18:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};
// cached from whatever global is present so that test runners that stub it
// don't break things. But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals. It's inside a
// function because try/catches deoptimize in certain engines.
var cachedSetTimeout;
var cachedClearTimeout;
function defaultSetTimout() {
throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
throw new Error('clearTimeout has not been defined');
}
(function () {
try {
if (typeof setTimeout === 'function') {
cachedSetTimeout = setTimeout;
} else {
cachedSetTimeout = defaultSetTimout;
}
} catch (e) {
cachedSetTimeout = defaultSetTimout;
}
try {
if (typeof clearTimeout === 'function') {
cachedClearTimeout = clearTimeout;
} else {
cachedClearTimeout = defaultClearTimeout;
}
} catch (e) {
cachedClearTimeout = defaultClearTimeout;
}
} ())
function runTimeout(fun) {
if (cachedSetTimeout === setTimeout) {
//normal enviroments in sane situations
return setTimeout(fun, 0);
}
// if setTimeout wasn't available but was latter defined
if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
cachedSetTimeout = setTimeout;
return setTimeout(fun, 0);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedSetTimeout(fun, 0);
} catch(e){
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedSetTimeout.call(null, fun, 0);
} catch(e){
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
return cachedSetTimeout.call(this, fun, 0);
}
}
}
function runClearTimeout(marker) {
if (cachedClearTimeout === clearTimeout) {
//normal enviroments in sane situations
return clearTimeout(marker);
}
// if clearTimeout wasn't available but was latter defined
if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
cachedClearTimeout = clearTimeout;
return clearTimeout(marker);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedClearTimeout(marker);
} catch (e){
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedClearTimeout.call(null, marker);
} catch (e){
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
// Some versions of I.E. have different rules for clearTimeout vs setTimeout
return cachedClearTimeout.call(this, marker);
}
}
}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;
function cleanUpNextTick() {
if (!draining || !currentQueue) {
return;
}
draining = false;
if (currentQueue.length) {
queue = currentQueue.concat(queue);
} else {
queueIndex = -1;
}
if (queue.length) {
drainQueue();
}
}
function drainQueue() {
if (draining) {
return;
}
var timeout = runTimeout(cleanUpNextTick);
draining = true;
var len = queue.length;
while(len) {
currentQueue = queue;
queue = [];
while (++queueIndex < len) {
if (currentQueue) {
currentQueue[queueIndex].run();
}
}
queueIndex = -1;
len = queue.length;
}
currentQueue = null;
draining = false;
runClearTimeout(timeout);
}
process.nextTick = function (fun) {
var args = new Array(arguments.length - 1);
if (arguments.length > 1) {
for (var i = 1; i < arguments.length; i++) {
args[i - 1] = arguments[i];
}
}
queue.push(new Item(fun, args));
if (queue.length === 1 && !draining) {
runTimeout(drainQueue);
}
};
// v8 likes predictible objects
function Item(fun, array) {
this.fun = fun;
this.array = array;
}
Item.prototype.run = function () {
this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};
function noop() {}
process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;
process.listeners = function (name) { return [] }
process.binding = function (name) {
throw new Error('process.binding is not supported');
};
process.cwd = function () { return '/' };
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };
},{}],19:[function(require,module,exports){
module.exports = function isBuffer(arg) {
return arg && typeof arg === 'object'
&& typeof arg.copy === 'function'
&& typeof arg.fill === 'function'
&& typeof arg.readUInt8 === 'function';
}
},{}],20:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
if (!isString(f)) {
var objects = [];
for (var i = 0; i < arguments.length; i++) {
objects.push(inspect(arguments[i]));
}
return objects.join(' ');
}
var i = 1;
var args = arguments;
var len = args.length;
var str = String(f).replace(formatRegExp, function(x) {
if (x === '%%') return '%';
if (i >= len) return x;
switch (x) {
case '%s': return String(args[i++]);
case '%d': return Number(args[i++]);
case '%j':
try {
return JSON.stringify(args[i++]);
} catch (_) {
return '[Circular]';
}
default:
return x;
}
});
for (var x = args[i]; i < len; x = args[++i]) {
if (isNull(x) || !isObject(x)) {
str += ' ' + x;
} else {
str += ' ' + inspect(x);
}
}
return str;
};
// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
// Allow for deprecating things in the process of starting up.
if (isUndefined(global.process)) {
return function() {
return exports.deprecate(fn, msg).apply(this, arguments);
};
}
if (process.noDeprecation === true) {
return fn;
}
var warned = false;
function deprecated() {
if (!warned) {
if (process.throwDeprecation) {
throw new Error(msg);
} else if (process.traceDeprecation) {
console.trace(msg);
} else {
console.error(msg);
}
warned = true;
}
return fn.apply(this, arguments);
}
return deprecated;
};
var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
if (isUndefined(debugEnviron))
debugEnviron = process.env.NODE_DEBUG || '';
set = set.toUpperCase();
if (!debugs[set]) {
if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
var pid = process.pid;
debugs[set] = function() {
var msg = exports.format.apply(exports, arguments);
console.error('%s %d: %s', set, pid, msg);
};
} else {
debugs[set] = function() {};
}
}
return debugs[set];
};
/**
* Echos the value of a value. Trys to print the value out
* in the best way possible given the different types.
*
* @param {Object} obj The object to print out.
* @param {Object} opts Optional options object that alters the output.
*/
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
// default options
var ctx = {
seen: [],
stylize: stylizeNoColor
};
// legacy...
if (arguments.length >= 3) ctx.depth = arguments[2];
if (arguments.length >= 4) ctx.colors = arguments[3];
if (isBoolean(opts)) {
// legacy...
ctx.showHidden = opts;
} else if (opts) {
// got an "options" object
exports._extend(ctx, opts);
}
// set default options
if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
if (isUndefined(ctx.depth)) ctx.depth = 2;
if (isUndefined(ctx.colors)) ctx.colors = false;
if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
if (ctx.colors) ctx.stylize = stylizeWithColor;
return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;
// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
'bold' : [1, 22],
'italic' : [3, 23],
'underline' : [4, 24],
'inverse' : [7, 27],
'white' : [37, 39],
'grey' : [90, 39],
'black' : [30, 39],
'blue' : [34, 39],
'cyan' : [36, 39],
'green' : [32, 39],
'magenta' : [35, 39],
'red' : [31, 39],
'yellow' : [33, 39]
};
// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
'special': 'cyan',
'number': 'yellow',
'boolean': 'yellow',
'undefined': 'grey',
'null': 'bold',
'string': 'green',
'date': 'magenta',
// "name": intentionally not styling
'regexp': 'red'
};
function stylizeWithColor(str, styleType) {
var style = inspect.styles[styleType];
if (style) {
return '\u001b[' + inspect.colors[style][0] + 'm' + str +
'\u001b[' + inspect.colors[style][1] + 'm';
} else {
return str;
}
}
function stylizeNoColor(str, styleType) {
return str;
}
function arrayToHash(array) {
var hash = {};
array.forEach(function(val, idx) {
hash[val] = true;
});
return hash;
}
function formatValue(ctx, value, recurseTimes) {
// Provide a hook for user-specified inspect functions.
// Check that value is an object with an inspect function on it
if (ctx.customInspect &&
value &&
isFunction(value.inspect) &&
// Filter out the util module, it's inspect function is special
value.inspect !== exports.inspect &&
// Also filter out any prototype objects using the circular check.
!(value.constructor && value.constructor.prototype === value)) {
var ret = value.inspect(recurseTimes, ctx);
if (!isString(ret)) {
ret = formatValue(ctx, ret, recurseTimes);
}
return ret;
}
// Primitive types cannot have properties
var primitive = formatPrimitive(ctx, value);
if (primitive) {
return primitive;
}
// Look up the keys of the object.
var keys = Object.keys(value);
var visibleKeys = arrayToHash(keys);
if (ctx.showHidden) {
keys = Object.getOwnPropertyNames(value);
}
// IE doesn't make error fields non-enumerable
// http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
if (isError(value)
&& (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
return formatError(value);
}
// Some type of object without properties can be shortcutted.
if (keys.length === 0) {
if (isFunction(value)) {
var name = value.name ? ': ' + value.name : '';
return ctx.stylize('[Function' + name + ']', 'special');
}
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
}
if (isDate(value)) {
return ctx.stylize(Date.prototype.toString.call(value), 'date');
}
if (isError(value)) {
return formatError(value);
}
}
var base = '', array = false, braces = ['{', '}'];
// Make Array say that they are Array
if (isArray(value)) {
array = true;
braces = ['[', ']'];
}
// Make functions say that they are functions
if (isFunction(value)) {
var n = value.name ? ': ' + value.name : '';
base = ' [Function' + n + ']';
}
// Make RegExps say that they are RegExps
if (isRegExp(value)) {
base = ' ' + RegExp.prototype.toString.call(value);
}
// Make dates with properties first say the date
if (isDate(value)) {
base = ' ' + Date.prototype.toUTCString.call(value);
}
// Make error with message first say the error
if (isError(value)) {
base = ' ' + formatError(value);
}
if (keys.length === 0 && (!array || value.length == 0)) {
return braces[0] + base + braces[1];
}
if (recurseTimes < 0) {
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
} else {
return ctx.stylize('[Object]', 'special');
}
}
ctx.seen.push(value);
var output;
if (array) {
output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
} else {
output = keys.map(function(key) {
return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
});
}
ctx.seen.pop();
return reduceToSingleString(output, base, braces);
}
function formatPrimitive(ctx, value) {
if (isUndefined(value))
return ctx.stylize('undefined', 'undefined');
if (isString(value)) {
var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
.replace(/'/g, "\\'")
.replace(/\\"/g, '"') + '\'';
return ctx.stylize(simple, 'string');
}
if (isNumber(value))
return ctx.stylize('' + value, 'number');
if (isBoolean(value))
return ctx.stylize('' + value, 'boolean');
// For some reason typeof null is "object", so special case here.
if (isNull(value))
return ctx.stylize('null', 'null');
}
function formatError(value) {
return '[' + Error.prototype.toString.call(value) + ']';
}
function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
var output = [];
for (var i = 0, l = value.length; i < l; ++i) {
if (hasOwnProperty(value, String(i))) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
String(i), true));
} else {
output.push('');
}
}
keys.forEach(function(key) {
if (!key.match(/^\d+$/)) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
key, true));
}
});
return output;
}
function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
var name, str, desc;
desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
if (desc.get) {
if (desc.set) {
str = ctx.stylize('[Getter/Setter]', 'special');
} else {
str = ctx.stylize('[Getter]', 'special');
}
} else {
if (desc.set) {
str = ctx.stylize('[Setter]', 'special');
}
}
if (!hasOwnProperty(visibleKeys, key)) {
name = '[' + key + ']';
}
if (!str) {
if (ctx.seen.indexOf(desc.value) < 0) {
if (isNull(recurseTimes)) {
str = formatValue(ctx, desc.value, null);
} else {
str = formatValue(ctx, desc.value, recurseTimes - 1);
}
if (str.indexOf('\n') > -1) {
if (array) {
str = str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n').substr(2);
} else {
str = '\n' + str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n');
}
}
} else {
str = ctx.stylize('[Circular]', 'special');
}
}
if (isUndefined(name)) {
if (array && key.match(/^\d+$/)) {
return str;
}
name = JSON.stringify('' + key);
if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
name = name.substr(1, name.length - 2);
name = ctx.stylize(name, 'name');
} else {
name = name.replace(/'/g, "\\'")
.replace(/\\"/g, '"')
.replace(/(^"|"$)/g, "'");
name = ctx.stylize(name, 'string');
}
}
return name + ': ' + str;
}
function reduceToSingleString(output, base, braces) {
var numLinesEst = 0;
var length = output.reduce(function(prev, cur) {
numLinesEst++;
if (cur.indexOf('\n') >= 0) numLinesEst++;
return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
}, 0);
if (length > 60) {
return braces[0] +
(base === '' ? '' : base + '\n ') +
' ' +
output.join(',\n ') +
' ' +
braces[1];
}
return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}
// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
return Array.isArray(ar);
}
exports.isArray = isArray;
function isBoolean(arg) {
return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;
function isNull(arg) {
return arg === null;
}
exports.isNull = isNull;
function isNullOrUndefined(arg) {
return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;
function isNumber(arg) {
return typeof arg === 'number';
}
exports.isNumber = isNumber;
function isString(arg) {
return typeof arg === 'string';
}
exports.isString = isString;
function isSymbol(arg) {
return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;
function isUndefined(arg) {
return arg === void 0;
}
exports.isUndefined = isUndefined;
function isRegExp(re) {
return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;
function isDate(d) {
return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;
function isError(e) {
return isObject(e) &&
(objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;
function isFunction(arg) {
return typeof arg === 'function';
}
exports.isFunction = isFunction;
function isPrimitive(arg) {
return arg === null ||
typeof arg === 'boolean' ||
typeof arg === 'number' ||
typeof arg === 'string' ||
typeof arg === 'symbol' || // ES6 symbol
typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;
exports.isBuffer = require('./support/isBuffer');
function objectToString(o) {
return Object.prototype.toString.call(o);
}
function pad(n) {
return n < 10 ? '0' + n.toString(10) : n.toString(10);
}
var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
'Oct', 'Nov', 'Dec'];
// 26 Feb 16:19:34
function timestamp() {
var d = new Date();
var time = [pad(d.getHours()),
pad(d.getMinutes()),
pad(d.getSeconds())].join(':');
return [d.getDate(), months[d.getMonth()], time].join(' ');
}
// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};
/**
* Inherit the prototype methods from one constructor into another.
*
* The Function.prototype.inherits from lang.js rewritten as a standalone
* function (not on Function.prototype). NOTE: If this file is to be loaded
* during bootstrapping this function needs to be rewritten using some native
* functions as prototype setup using normal JavaScript does not work as
* expected during bootstrapping (see mirror.js in r114903).
*
* @param {function} ctor Constructor function which needs to inherit the
* prototype.
* @param {function} superCtor Constructor function to inherit prototype from.
*/
exports.inherits = require('inherits');
exports._extend = function(origin, add) {
// Don't do anything if add isn't an object
if (!add || !isObject(add)) return origin;
var keys = Object.keys(add);
var i = keys.length;
while (i--) {
origin[keys[i]] = add[keys[i]];
}
return origin;
};
function hasOwnProperty(obj, prop) {
return Object.prototype.hasOwnProperty.call(obj, prop);
}
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":19,"_process":18,"inherits":16}],"buffer":[function(require,module,exports){
(function (Buffer){
/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh <https://feross.org>
* @license MIT
*/
/* eslint-disable no-proto */
'use strict'
var base64 = require('base64-js')
var ieee754 = require('ieee754')
exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50
var K_MAX_LENGTH = 0x7fffffff
exports.kMaxLength = K_MAX_LENGTH
/**
* If `Buffer.TYPED_ARRAY_SUPPORT`:
* === true Use Uint8Array implementation (fastest)
* === false Print warning and recommend using `buffer` v4.x which has an 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+.
*
* We report that the browser does not support typed arrays if the are not subclassable
* using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
* (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
* for __proto__ and has a buggy typed array implementation.
*/
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()
if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
typeof console.error === 'function') {
console.error(
'This browser lacks typed array (Uint8Array) support which is required by ' +
'`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
)
}
function typedArraySupport () {
// Can typed array instances can be augmented?
try {
var arr = new Uint8Array(1)
arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } }
return arr.foo() === 42
} catch (e) {
return false
}
}
Object.defineProperty(Buffer.prototype, 'parent', {
enumerable: true,
get: function () {
if (!Buffer.isBuffer(this)) return undefined
return this.buffer
}
})
Object.defineProperty(Buffer.prototype, 'offset', {
enumerable: true,
get: function () {
if (!Buffer.isBuffer(this)) return undefined
return this.byteOffset
}
})
function createBuffer (length) {
if (length > K_MAX_LENGTH) {
throw new RangeError('The value "' + length + '" is invalid for option "size"')
}
// Return an augmented `Uint8Array` instance
var buf = new Uint8Array(length)
buf.__proto__ = Buffer.prototype
return buf
}
/**
* 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) {
// Common case.
if (typeof arg === 'number') {
if (typeof encodingOrOffset === 'string') {
throw new TypeError(
'The "string" argument must be of type string. Received type number'
)
}
return allocUnsafe(arg)
}
return from(arg, encodingOrOffset, length)
}
// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
if (typeof Symbol !== 'undefined' && Symbol.species != null &&
Buffer[Symbol.species] === Buffer) {
Object.defineProperty(Buffer, Symbol.species, {
value: null,
configurable: true,
enumerable: false,
writable: false
})
}
Buffer.poolSize = 8192 // not used by this implementation
function from (value, encodingOrOffset, length) {
if (typeof value === 'string') {
return fromString(value, encodingOrOffset)
}
if (ArrayBuffer.isView(value)) {
return fromArrayLike(value)
}
if (value == null) {
throw TypeError(
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
'or Array-like Object. Received type ' + (typeof value)
)
}
if (isInstance(value, ArrayBuffer) ||
(value && isInstance(value.buffer, ArrayBuffer))) {
return fromArrayBuffer(value, encodingOrOffset, length)
}
if (typeof value === 'number') {
throw new TypeError(
'The "value" argument must not be of type number. Received type number'
)
}
var valueOf = value.valueOf && value.valueOf()
if (valueOf != null && valueOf !== value) {
return Buffer.from(valueOf, encodingOrOffset, length)
}
var b = fromObject(value)
if (b) return b
if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
typeof value[Symbol.toPrimitive] === 'function') {
return Buffer.from(
value[Symbol.toPrimitive]('string'), encodingOrOffset, length
)
}
throw new TypeError(
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
'or Array-like Object. Received type ' + (typeof 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(value, encodingOrOffset, length)
}
// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
// https://github.com/feross/buffer/pull/148
Buffer.prototype.__proto__ = Uint8Array.prototype
Buffer.__proto__ = Uint8Array
function assertSize (size) {
if (typeof size !== 'number') {
throw new TypeError('"size" argument must be of type number')
} else if (size < 0) {
throw new RangeError('The value "' + size + '" is invalid for option "size"')
}
}
function alloc (size, fill, encoding) {
assertSize(size)
if (size <= 0) {
return createBuffer(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(size).fill(fill, encoding)
: createBuffer(size).fill(fill)
}
return createBuffer(size)
}
/**
* Creates a new filled Buffer instance.
* alloc(size[, fill[, encoding]])
**/
Buffer.alloc = function (size, fill, encoding) {
return alloc(size, fill, encoding)
}
function allocUnsafe (size) {
assertSize(size)
return createBuffer(size < 0 ? 0 : checked(size) | 0)
}
/**
* Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
* */
Buffer.allocUnsafe = function (size) {
return allocUnsafe(size)
}
/**
* Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
*/
Buffer.allocUnsafeSlow = function (size) {
return allocUnsafe(size)
}
function fromString (string, encoding) {
if (typeof encoding !== 'string' || encoding === '') {
encoding = 'utf8'
}
if (!Buffer.isEncoding(encoding)) {
throw new TypeError('Unknown encoding: ' + encoding)
}
var length = byteLength(string, encoding) | 0
var buf = createBuffer(length)
var actual = buf.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')
buf = buf.slice(0, actual)
}
return buf
}
function fromArrayLike (array) {
var length = array.length < 0 ? 0 : checked(array.length) | 0
var buf = createBuffer(length)
for (var i = 0; i < length; i += 1) {
buf[i] = array[i] & 255
}
return buf
}
function fromArrayBuffer (array, byteOffset, length) {
if (byteOffset < 0 || array.byteLength < byteOffset) {
throw new RangeError('"offset" is outside of buffer bounds')
}
if (array.byteLength < byteOffset + (length || 0)) {
throw new RangeError('"length" is outside of buffer bounds')
}
var buf
if (byteOffset === undefined && length === undefined) {
buf = new Uint8Array(array)
} else if (length === undefined) {
buf = new Uint8Array(array, byteOffset)
} else {
buf = new Uint8Array(array, byteOffset, length)
}
// Return an augmented `Uint8Array` instance
buf.__proto__ = Buffer.prototype
return buf
}
function fromObject (obj) {
if (Buffer.isBuffer(obj)) {
var len = checked(obj.length) | 0
var buf = createBuffer(len)
if (buf.length === 0) {
return buf
}
obj.copy(buf, 0, 0, len)
return buf
}
if (obj.length !== undefined) {
if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
return createBuffer(0)
}
return fromArrayLike(obj)
}
if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
return fromArrayLike(obj.data)
}
}
function checked (length) {
// Note: cannot use `length < K_MAX_LENGTH` here because that fails when
// length is NaN (which is otherwise coerced to zero.)
if (length >= K_MAX_LENGTH) {
throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
'size: 0x' + K_MAX_LENGTH.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 === true &&
b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
}
Buffer.compare = function compare (a, b) {
if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
throw new TypeError(
'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
)
}
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 (!Array.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 (isInstance(buf, Uint8Array)) {
buf = Buffer.from(buf)
}
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 (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
return string.byteLength
}
if (typeof string !== 'string') {
throw new TypeError(
'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
'Received type ' + typeof string
)
}
var len = string.length
var mustMatch = (arguments.length > 2 && arguments[2] === true)
if (!mustMatch && 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':
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 mustMatch ? -1 : 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
}
}
}
// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
// reliably in a browserify context because there could be multiple different
// copies of the 'buffer' package in use. This method works even for Buffer
// instances that were created from another copy of the `buffer` package.
// See: https://github.com/feross/buffer/issues/154
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
if (length === 0) return ''
if (arguments.length === 0) return utf8Slice(this, 0, length)
return slowToString.apply(this, arguments)
}
Buffer.prototype.toLocaleString = Buffer.prototype.toString
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
str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
if (this.length > max) str += ' ... '
return '<Buffer ' + str + '>'
}
Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
if (isInstance(target, Uint8Array)) {
target = Buffer.from(target, target.offset, target.byteLength)
}
if (!Buffer.isBuffer(target)) {
throw new TypeError(
'The "target" argument must be one of type Buffer or Uint8Array. ' +
'Received type ' + (typeof target)
)
}
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 (numberIsNaN(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 (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
}
}
var strLen = string.length
if (length > strLen / 2) {
length = strLen / 2
}
for (var i = 0; i < length; ++i) {
var parsed = parseInt(string.substr(i * 2, 2), 16)
if (numberIsNaN(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
}
} 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 = this.subarray(start, end)
// Return an augmented `Uint8Array` instance
newBuf.__proto__ = Buffer.prototype
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) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 1, this.length)
return this[offset]
}
Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
return this[offset] | (this[offset + 1] << 8)
}
Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
return (this[offset] << 8) | this[offset + 1]
}
Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
offset = offset >>> 0
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) {
offset = offset >>> 0
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) {
offset = offset >>> 0
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) {
offset = offset >>> 0
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) {
offset = offset >>> 0
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) {
offset = offset >>> 0
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) {
offset = offset >>> 0
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) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return ieee754.read(this, offset, true, 23, 4)
}
Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return ieee754.read(this, offset, false, 23, 4)
}
Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 8, this.length)
return ieee754.read(this, offset, true, 52, 8)
}
Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
offset = offset >>> 0
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)
this[offset] = (value & 0xff)
return offset + 1
}
Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
this[offset] = (value & 0xff)
this[offset + 1] = (value >>> 8)
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)
this[offset] = (value >>> 8)
this[offset + 1] = (value & 0xff)
return offset + 2
}
Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
this[offset + 3] = (value >>> 24)
this[offset + 2] = (value >>> 16)
this[offset + 1] = (value >>> 8)
this[offset] = (value & 0xff)
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)
this[offset] = (value >>> 24)
this[offset + 1] = (value >>> 16)
this[offset + 2] = (value >>> 8)
this[offset + 3] = (value & 0xff)
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 (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)
this[offset] = (value & 0xff)
this[offset + 1] = (value >>> 8)
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)
this[offset] = (value >>> 8)
this[offset + 1] = (value & 0xff)
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)
this[offset] = (value & 0xff)
this[offset + 1] = (value >>> 8)
this[offset + 2] = (value >>> 16)
this[offset + 3] = (value >>> 24)
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
this[offset] = (value >>> 24)
this[offset + 1] = (value >>> 16)
this[offset + 2] = (value >>> 8)
this[offset + 3] = (value & 0xff)
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) {
value = +value
offset = offset >>> 0
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) {
value = +value
offset = offset >>> 0
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 (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
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('Index out of range')
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
if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
// Use built-in when available, missing from IE11
this.copyWithin(targetStart, start, end)
} else if (this === target && start < targetStart && targetStart < end) {
// descending copy from end
for (var i = len - 1; i >= 0; --i) {
target[i + targetStart] = this[i + start]
}
} else {
Uint8Array.prototype.set.call(
target,
this.subarray(start, end),
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 (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)
}
if (val.length === 1) {
var code = val.charCodeAt(0)
if ((encoding === 'utf8' && code < 128) ||
encoding === 'latin1') {
// Fast path: If `val` fits into a single byte, use that numeric value.
val = code
}
}
} 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
: Buffer.from(val, encoding)
var len = bytes.length
if (len === 0) {
throw new TypeError('The value "' + val +
'" is invalid for argument "value"')
}
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 takes equal signs as end of the Base64 encoding
str = str.split('=')[0]
// Node strips out invalid characters like \n and \t from the string, base64-js does not
str = str.trim().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 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
}
// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
// the `instanceof` check but they should be treated as of that type.
// See: https://github.com/feross/buffer/issues/166
function isInstance (obj, type) {
return obj instanceof type ||
(obj != null && obj.constructor != null && obj.constructor.name != null &&
obj.constructor.name === type.name)
}
function numberIsNaN (obj) {
// For IE11 support
return obj !== obj // eslint-disable-line no-self-compare
}
}).call(this,require("buffer").Buffer)
},{"base64-js":14,"buffer":"buffer","ieee754":15}],"wkx":[function(require,module,exports){
exports.Types = require('./types');
exports.Geometry = require('./geometry');
exports.Point = require('./point');
exports.LineString = require('./linestring');
exports.Polygon = require('./polygon');
exports.MultiPoint = require('./multipoint');
exports.MultiLineString = require('./multilinestring');
exports.MultiPolygon = require('./multipolygon');
exports.GeometryCollection = require('./geometrycollection');
},{"./geometry":3,"./geometrycollection":4,"./linestring":5,"./multilinestring":6,"./multipoint":7,"./multipolygon":8,"./point":9,"./polygon":10,"./types":11}]},{},["wkx"]);
Zerion Mini Shell 1.0