.

qwen/nodejs/node_modules/wkx/LICENSE.txt

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+The MIT License (MIT)
+
+Copyright (c) 2013 Christian Schwarz
+
+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.

qwen/nodejs/node_modules/wkx/README.md

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+wkx [![Build Status](https://travis-ci.org/cschwarz/wkx.svg?branch=master)](https://travis-ci.org/cschwarz/wkx) [![Coverage Status](https://coveralls.io/repos/cschwarz/wkx/badge.svg?branch=master)](https://coveralls.io/r/cschwarz/wkx?branch=master)
+========
+
+A WKT/WKB/EWKT/EWKB/TWKB/GeoJSON parser and serializer with support for
+
+- Point
+- LineString
+- Polygon
+- MultiPoint
+- MultiLineString
+- MultiPolygon
+- GeometryCollection
+
+Examples
+--------
+
+The following examples show you how to work with wkx.
+
+```javascript
+var wkx = require('wkx');
+
+//Parsing a WKT string
+var geometry = wkx.Geometry.parse('POINT(1 2)');
+
+//Parsing an EWKT string
+var geometry = wkx.Geometry.parse('SRID=4326;POINT(1 2)');
+
+//Parsing a node Buffer containing a WKB object
+var geometry = wkx.Geometry.parse(wkbBuffer);
+
+//Parsing a node Buffer containing an EWKB object
+var geometry = wkx.Geometry.parse(ewkbBuffer);
+
+//Parsing a node Buffer containing a TWKB object
+var geometry = wkx.Geometry.parseTwkb(twkbBuffer);
+
+//Parsing a GeoJSON object
+var geometry = wkx.Geometry.parseGeoJSON({ type: 'Point', coordinates: [1, 2] });
+
+//Serializing a Point geometry to WKT
+var wktString = new wkx.Point(1, 2).toWkt();
+
+//Serializing a Point geometry to WKB
+var wkbBuffer = new wkx.Point(1, 2).toWkb();
+
+//Serializing a Point geometry to EWKT
+var ewktString = new wkx.Point(1, 2, undefined, undefined, 4326).toEwkt();
+
+//Serializing a Point geometry to EWKB
+var ewkbBuffer = new wkx.Point(1, 2, undefined, undefined, 4326).toEwkb();
+
+//Serializing a Point geometry to TWKB
+var twkbBuffer = new wkx.Point(1, 2).toTwkb();
+
+//Serializing a Point geometry to GeoJSON
+var geoJSONObject = new wkx.Point(1, 2).toGeoJSON();
+```
+
+Browser
+-------
+
+To use `wkx` in a webpage, simply copy a built browser version from `dist/` into your project, and use a `script` tag
+to include it:
+```html
+<script src="wkx.js"></script>
+```
+
+If you use [browserify][] for your project, you can simply `npm install wkx --save`, and just require `wkx` as usual in
+your code.
+
+----
+
+Regardless of which of the preceeding options you choose, using `wkx` in the browser will look the same:
+```javascript
+var wkx = require('wkx');
+
+var geometry = wkx.Geometry.parse('POINT(1 2)');
+
+console.log(geometry.toGeoJSON());
+```
+
+In addition to the `wkx` module, the browser versions also export `buffer`, which is useful for parsing WKB:
+```javascript
+var Buffer = require('buffer').Buffer;
+var wkx = require('wkx');
+
+var wkbBuffer = new Buffer('0101000000000000000000f03f0000000000000040', 'hex');
+var geometry = wkx.Geometry.parse(wkbBuffer);
+
+console.log(geometry.toGeoJSON());
+```
+[browserify]: http://browserify.org/

qwen/nodejs/node_modules/wkx/lib/binaryreader.js

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+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;
+};

qwen/nodejs/node_modules/wkx/lib/binarywriter.js

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+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');
+        }
+    }
+};

qwen/nodejs/node_modules/wkx/lib/geometry.js

@@ -0,0 +1,384 @@
+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;
+};

qwen/nodejs/node_modules/wkx/lib/geometrycollection.js

@@ -0,0 +1,169 @@
+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;
+};

qwen/nodejs/node_modules/wkx/lib/linestring.js

@@ -0,0 +1,178 @@
+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;
+};

qwen/nodejs/node_modules/wkx/lib/multilinestring.js

@@ -0,0 +1,189 @@
+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;
+};

qwen/nodejs/node_modules/wkx/lib/multipoint.js

@@ -0,0 +1,172 @@
+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;
+};

qwen/nodejs/node_modules/wkx/lib/multipolygon.js

@@ -0,0 +1,226 @@
+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;
+};

qwen/nodejs/node_modules/wkx/lib/point.js

@@ -0,0 +1,217 @@
+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;
+};

qwen/nodejs/node_modules/wkx/lib/polygon.js

@@ -0,0 +1,288 @@
+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;
+};

qwen/nodejs/node_modules/wkx/lib/types.js

@@ -0,0 +1,29 @@
+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'
+    }
+};

qwen/nodejs/node_modules/wkx/lib/wktparser.js

@@ -0,0 +1,124 @@
+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++;
+};

qwen/nodejs/node_modules/wkx/lib/wkx.d.ts

@@ -0,0 +1,100 @@
+/// <reference types="node" />
+
+declare module "wkx" {
+
+    export class Geometry {
+        srid: number;
+        hasZ: boolean;
+        hasM: boolean;
+
+        static parse(value: string | Buffer): Geometry;
+        static parseTwkb(value: Buffer): Geometry;
+        static parseGeoJSON(value: {}): Geometry;
+
+        toWkt(): string;
+        toEwkt(): string;
+        toWkb(): Buffer;
+        toEwkb(): Buffer;
+        toTwkb(): Buffer;
+        toGeoJSON(options?: GeoJSONOptions): {};
+    }
+
+    export interface GeoJSONOptions {
+        shortCrs?: boolean;
+        longCrs?: boolean;
+    }
+
+    export class Point extends Geometry {
+        x: number;
+        y: number;
+        z: number;
+        m: number;
+
+        constructor(x?: number, y?: number, z?: number, m?: number, srid?: number);
+
+        static Z(x: number, y: number, z: number, srid?: number): Point;
+        static M(x: number, y: number, m: number, srid?: number): Point;
+        static ZM(x: number, y: number, z: number, m: number, srid?: number): Point;
+    }
+
+    export class LineString extends Geometry {
+        points: Point[];
+
+        constructor(points?: Point[], srid?: number);
+        
+        static Z(points?: Point[], srid?: number): LineString;
+        static M(points?: Point[], srid?: number): LineString;
+        static ZM(points?: Point[], srid?: number): LineString;
+    }
+
+    export class Polygon extends Geometry {
+        exteriorRing: Point[];
+        interiorRings: Point[][];
+
+        constructor(exteriorRing?: Point[], interiorRings?: Point[][], srid?: number);
+
+        static Z(exteriorRing?: Point[], interiorRings?: Point[][], srid?: number): Polygon;
+        static M(exteriorRing?: Point[], interiorRings?: Point[][], srid?: number): Polygon;
+        static ZM(exteriorRing?: Point[], interiorRings?: Point[][], srid?: number): Polygon;
+    }
+
+    export class MultiPoint extends Geometry {
+        points: Point[];
+
+        constructor(points?: Point[], srid?: number);
+        
+        static Z(points?: Point[], srid?: number): MultiPoint;
+        static M(points?: Point[], srid?: number): MultiPoint;
+        static ZM(points?: Point[], srid?: number): MultiPoint;
+    }
+
+    export class MultiLineString extends Geometry {
+        lineStrings: LineString[];
+
+        constructor(lineStrings?: LineString[], srid?: number);
+        
+        static Z(lineStrings?: LineString[], srid?: number): MultiLineString;
+        static M(lineStrings?: LineString[], srid?: number): MultiLineString;
+        static ZM(lineStrings?: LineString[], srid?: number): MultiLineString;
+    }
+
+    export class MultiPolygon extends Geometry {
+        polygons: Polygon[];
+
+        constructor(polygons?: Polygon[], srid?: number);
+        
+        static Z(polygons?: Polygon[], srid?: number): MultiPolygon;
+        static M(polygons?: Polygon[], srid?: number): MultiPolygon;
+        static ZM(polygons?: Polygon[], srid?: number): MultiPolygon;
+    }
+
+    export class GeometryCollection extends Geometry {
+        geometries: Geometry[];
+
+        constructor(geometries?: Geometry[], srid?: number);
+        
+        static Z(geometries?: Geometry[], srid?: number): GeometryCollection;
+        static M(geometries?: Geometry[], srid?: number): GeometryCollection;
+        static ZM(geometries?: Geometry[], srid?: number): GeometryCollection;
+    }
+}

qwen/nodejs/node_modules/wkx/lib/wkx.js

@@ -0,0 +1,9 @@
+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');

qwen/nodejs/node_modules/wkx/lib/zigzag.js

@@ -0,0 +1,8 @@
+module.exports = {
+    encode: function (value) {
+        return (value << 1) ^ (value >> 31);
+    },
+    decode: function (value) {
+        return (value >> 1) ^ (-(value & 1));
+    }
+};

qwen/nodejs/node_modules/wkx/package.json

@@ -0,0 +1,50 @@
+{
+  "name": "wkx",
+  "version": "0.5.0",
+  "description": "A WKT/WKB/EWKT/EWKB/TWKB/GeoJSON parser and serializer",
+  "main": "lib/wkx.js",
+  "types": "lib/wkx.d.ts",
+  "files": [
+    "dist/",
+    "lib/"
+  ],
+  "scripts": {
+    "test": "jshint . && nyc mocha",
+    "build": "mkdirp ./dist && browserify -r buffer -r ./lib/wkx.js:wkx ./lib/wkx.js > ./dist/wkx.js && uglifyjs -c -m -- ./dist/wkx.js > ./dist/wkx.min.js",
+    "coverage": "nyc report --reporter=text-lcov | coveralls"
+  },
+  "author": "Christian Schwarz",
+  "license": "MIT",
+  "devDependencies": {
+    "async": "^3.2.0",
+    "browserify": "^16.5.0",
+    "coveralls": "^3.0.11",
+    "deep-eql": "^4.0.0",
+    "jshint": "^2.11.0",
+    "json-stringify-pretty-compact": "^2.0.0",
+    "mkdirp": "^1.0.3",
+    "mocha": "^7.1.1",
+    "nyc": "^15.0.0",
+    "pg": "^7.18.2",
+    "uglify-js": "^3.8.0"
+  },
+  "repository": {
+    "type": "git",
+    "url": "http://github.com/cschwarz/wkx.git"
+  },
+  "keywords": [
+    "wkt",
+    "wkb",
+    "ewkt",
+    "ewkb",
+    "twkb",
+    "geojson",
+    "ogc",
+    "geometry",
+    "geography",
+    "spatial"
+  ],
+  "dependencies": {
+    "@types/node": "*"
+  }
+}