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Merge pull request #1 from Skycatch/dev
[INFRA-744] Update Ptolemy
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| Original file line number | Diff line number | Diff line change |
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@@ -26,3 +26,6 @@ node_modules | |
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| # Users Environment Variables | ||
| .lock-wscript | ||
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| # ESLint Config Files | ||
| .eslintrc | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -1,7 +1,3 @@ | ||
| language: node_js | ||
| node_js: | ||
| - "0.12" | ||
| - "0.11" | ||
| - "0.10" | ||
| - "iojs" | ||
| - "iojs-v1.0.4" | ||
| - "4.4.4" |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,62 +1 @@ | ||
| var needle = require('needle'); | ||
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| var BASE_URI = 'http://epsg.io/', | ||
| Ptolemy = {}, | ||
| formatWhiteList = [ | ||
| 'proj4', | ||
| 'wkt', | ||
| 'prettywkt', | ||
| 'esriwkt', | ||
| 'gml', | ||
| 'mapnik', | ||
| 'proj4js' | ||
| ]; | ||
| /** | ||
| * CURRENTLY SUPPORTED PROJECTION FORMATS: | ||
| * proj4 | ||
| * ogcwkt | ||
| * prettywkt (human-readable) | ||
| * esriwkt | ||
| * gml | ||
| * mapnik | ||
| * proj4js (always be careful when using eval) | ||
| */ | ||
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| function validateEPSG (srid) { | ||
| if (srid.match("[0-9]+") && srid.length < 7) { | ||
| return true; | ||
| } else { | ||
| return false; | ||
| } | ||
| } | ||
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| /** | ||
| * Provide an EPSG SRID and the requested projection format you want to retrieve. | ||
| * | ||
| * @param {string or number} epsg The EPSG SRID | ||
| * @param {string} info The projection info being requested | ||
| * @return {function} callback Returns projection info requested | ||
| */ | ||
| Ptolemy.get = function(epsg, format, callback) { | ||
| epsg = epsg.toString(); | ||
| if (validateEPSG(epsg)) { | ||
| if (formatWhiteList.indexOf(format) > -1) { | ||
| var requestURI = BASE_URI + epsg + '.' + format; | ||
| needle.get(requestURI, {timeout:4000}, function(error, response) { | ||
| if (!error && response && response.statusCode == 200){ | ||
| callback(null, response.body); | ||
| } else if (response && response.statusCode) { | ||
| callback(response.statusCode + ' : ' + response.body); | ||
| } else { | ||
| callback(error); | ||
| } | ||
| }); | ||
| } else { | ||
| callback('Please make sure you are requesting one of the supported formats.'); | ||
| } | ||
| } else { | ||
| callback('Please make sure you are providing a valid EPSG SRID'); | ||
| } | ||
| }; | ||
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| module.exports = Ptolemy; | ||
| module.exports = require('./lib/ptolemy'); |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,41 @@ | ||
| 'use strict'; | ||
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| class ExtendableError extends Error { | ||
| constructor(message) { | ||
| super(); | ||
| this.message = message; | ||
| this.stack = (new Error(message)).stack; | ||
| this.name = this.constructor.name; | ||
| } | ||
| } | ||
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| class InvalidSRIDError extends ExtendableError { | ||
| constructor(m) { | ||
| super(m); | ||
| } | ||
| } | ||
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| class InvalidFormatError extends ExtendableError { | ||
| constructor(m) { | ||
| super(m); | ||
| } | ||
| } | ||
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| class StatusCodeError extends ExtendableError { | ||
| constructor(m) { | ||
| super(m); | ||
| } | ||
| } | ||
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| class NameError extends ExtendableError { | ||
| constructor(m) { | ||
| super(m); | ||
| } | ||
| } | ||
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| module.exports = { | ||
| InvalidSRIDError: InvalidSRIDError, | ||
| InvalidFormatError: InvalidFormatError, | ||
| StatusCodeError: StatusCodeError, | ||
| NameError: NameError | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| const needle = require('needle'); | ||
| const Bluebird = require('bluebird'); | ||
| const InvalidFormatError = require('./error').InvalidFormatError; | ||
| const InvalidSRIDError = require('./error').InvalidSRIDError; | ||
| const StatusCodeError = require('./error').StatusCodeError; | ||
| const NameError = require('./error').NameError; | ||
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| // Promisify Needle.get() | ||
| const promisfiedGet = Bluebird.promisify(needle.get); | ||
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| const BASE_URL = 'http://epsg.io/'; | ||
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| function Ptolemy() {} | ||
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| /** | ||
| * CURRENTLY SUPPORTED PROJECTION FORMATS: | ||
| * prettywkt (Well Known Text as HTML) | ||
| * wkt (OGC WKT) | ||
| * esriwkt (ESRI WKT) | ||
| * gml (OGC GML) | ||
| * xml | ||
| * proj4 | ||
| * js (Proj4js - always be careful when using eval) | ||
| * usgs | ||
| * geoserver | ||
| * mapfile (MapServer - MAPfile) | ||
| * mapnik | ||
| * sql (PostGIS) | ||
| */ | ||
| var formatWhiteList = [ | ||
| 'prettywkt', | ||
| 'wkt', | ||
| 'esriwkt', | ||
| 'proj4', | ||
| 'js', | ||
| 'usgs', | ||
| 'geoserver', | ||
| 'mapfile', | ||
| 'mapnik', | ||
| 'sql', | ||
| ]; | ||
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| // UTIL FUNCTIONS | ||
| function isValidEPSG(srid) { | ||
| if (srid.match('[0-9]+') && srid.length < 7) { | ||
| return true; | ||
| } else { | ||
| return false; | ||
| } | ||
| } | ||
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| /** | ||
| * Provide an EPSG SRID and the requested projection format you want to retrieve. | ||
| * | ||
| * @param {string or number} epsg The EPSG SRID | ||
| * @param {string} info The projection info being requested | ||
| * @return {function} returnObj Returns projection info requested | ||
| */ | ||
| Ptolemy.prototype.get = function(epsg, format) { | ||
| format = format.toLowerCase(); | ||
| epsg = epsg.toString(); | ||
| var returnObj = {}; | ||
| returnObj.epsg = epsg; | ||
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| if (!isValidEPSG(epsg)) { | ||
| return Bluebird.reject(new InvalidSRIDError('Invalid EPSG SRID.')); | ||
| } | ||
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| if (!(formatWhiteList.indexOf(format) > -1)) { | ||
| return Bluebird.reject(new InvalidFormatError('Invalid format.')); | ||
| } | ||
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| var requestURL = BASE_URL + epsg + '.' + format; | ||
| // Note: We parse the SRID's XML to get the Site Name (avoids scraping) | ||
| var nameURL = BASE_URL + epsg + '.xml'; | ||
| var opts = { | ||
| timeout: 4000 | ||
| }; | ||
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| return promisfiedGet(requestURL, opts) | ||
| .then((res) => { | ||
| if (res.statusCode !== 200) { | ||
| return Bluebird.reject(new StatusCodeError(res.statusCode + ': ' + res.statusMessage + '. ' + res.body)); | ||
| } | ||
| returnObj[format] = res.body; | ||
| return promisfiedGet(nameURL, { | ||
| timeout: 4000 | ||
| }) | ||
| .then((res) => { | ||
| // Parse XML for name | ||
| if (res.body['gml:ProjectedCRS']) { | ||
| returnObj.name = res.body['gml:ProjectedCRS']['gml:srsName']; | ||
| } | ||
| else if (res.body['gml:GeographicCRS']) { | ||
| returnObj.name = res.body['gml:GeographicCRS']['gml:srsName']; | ||
| } | ||
| else { | ||
| return Bluebird.reject(new NameError('Projection doesn\'t support requested format.')); | ||
| } | ||
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| return returnObj; | ||
| }); | ||
| }).catch((e) => { | ||
| throw e; | ||
| }); | ||
| }; | ||
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| module.exports = new Ptolemy(); |
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