thematic-earth/gcslib/parsers/string-encoded-parser.class.js

HTML-based, whole-Earth thematic maps using locally hosted data layers

/* Copyright (c) 2023 Read Write Tools. Legal use subject to the Thematic Earth Software License Agreement. */
import EncodedParser from'./encoded-parser.class.js';import*as SectionMarker from'../util/section-marker.js';import Coords from'../util/coords.class.js';import{Arc}from'../tae/topology.class.js';import expect from'../softlib/expect.js';import aver from'../softlib/aver.js';import terminal from'../softlib/terminal.js';export default class StringEncodedParser extends EncodedParser{constructor(e,t){expect(e,'GcsHoldingArea'),expect(t,'String'),super(e,t),Object.seal(this)}parse(e){return expect(e,'String'),this.payload=e,this.payloadLength=this.payload.length,this.payloadOffset=0,super.parse(e)}readPayload(){var[e,t]=this.readLine().split(' ',2);switch(e){case SectionMarker.MERIDIANS[1]:this.numMeridians=Number(t),this.readMeridians();break;case SectionMarker.PARALLELS[1]:this.numParallels=Number(t),this.readParallels();break;case SectionMarker.COORDINATES[1]:this.numCoordinates=Number(t),this.readCoordinates();break;case SectionMarker.ARCS[1]:this.numArcs=Number(t),this.readArcs();break;case SectionMarker.DATASET[1]:this.datasetName=t;break;case SectionMarker.GEOMETRY[1]:this.geometryType=t;break;case SectionMarker.PROPERTIES[1]:this.numProperties=Number(t),this.readProperties();break;case SectionMarker.FEATURES[1]:this.numFeatures=Number(t),this.readFeatures();break;case SectionMarker.END[1]:return!1;default:return terminal.abnormal(`unexpected marker, got ${e} ${t}`),!1}return!0}readMeridians(){expect(this.numMeridians,'Number'),aver(this.numMeridians>=0);for(let t=0;t<this.numMeridians;t++){if('ice'!=this.format)return terminal.logic(`Geoplex Feature Encoding (GFE) must not have a meridians section ${this.url}`),!1;var e=Math.fround(Number(this.readLine()));this.indexedCoordinates.addLongitude(e)}return aver(this.numMeridians==this.indexedCoordinates.meridians.length),!0}readParallels(){expect(this.numParallels,'Number'),aver(this.numParallels>=0);for(let t=0;t<this.numParallels;t++){if('ice'!=this.format)return terminal.logic(`Geoplex Feature Encoding (GFE) must not have a parallels section ${this.url}`),!1;var e=Math.fround(Number(this.readLine()));this.indexedCoordinates.addLatitude(e)}return aver(this.numParallels==this.indexedCoordinates.parallels.length),!0}readCoordinates(){if(expect(this.numCoordinates,'Number'),aver(this.numCoordinates>=0),'tae'!=this.format)return terminal.logic(`Only Topological Arc Encoding(TAE) expects a coordinates section ${this.url}`),!1;for(let a=0;a<this.numCoordinates;a++){var e=this.readLine(),[t,r]=e.split(','),s=new Coords(Number(t),Number(r));this.topology.taeCoords.addVertex(s)}return aver(this.numCoordinates==this.topology.taeCoords.length-1),!0}readArcs(){if(expect(this.numArcs,'Number'),aver(this.numArcs>=0),'tae'!=this.format)return terminal.logic(`Only Topological Arc Encoding(TAE) expects an arc section ${this.url}`),!1;for(let r=0;r<this.numArcs;r++){var e=this.readLine().split(','),t=new Arc;for(let r=0;r<e.length;r++)t.push(Number(e[r]));this.topology.taeArcs.push(t)}return aver(this.numArcs==this.topology.taeArcs.length-1),!0}readProperties(){return expect(this.numProperties,'Number'),aver(this.numProperties>=0),this.propertyNames=this.readLine().split(','),this.propertyTypes=this.readLine().split(','),aver(this.numProperties==this.propertyNames.length),aver(this.numProperties==this.propertyTypes.length),!0}readFeatureProperties(e,t,r,s,a){expect(e,['GcsPointFeature','GcsLineFeature','GcsPolygonFeature']),expect(t,'String'),expect(r,'String'),expect(s,'Array'),expect(a,'Array');var i=this.readLine();switch(t){case'xCoord':let f=Number(i);return s.push(this.indexedCoordinates.getLongitude(f)),!0;case'yCoord':let y=Number(i);return a.push(this.indexedCoordinates.getLatitude(y)),!0;case'xSegment':var n=i.split(',');for(let e=0;e<n.length;e++)s.push(this.indexedCoordinates.getLongitude(n[e]));return!0;case'ySegment':n=i.split(',');for(let e=0;e<n.length;e++)a.push(this.indexedCoordinates.getLatitude(n[e]));return!0;case'xRings':var o=i.split('|');for(let e=0;e<o.length;e++){let t=new Array;n=o[e].split(',');for(let e=0;e<n.length;e++)t.push(this.indexedCoordinates.getLongitude(n[e]));s.push(t)}return!0;case'yRings':o=i.split('|');for(let e=0;e<o.length;e++){let t=new Array;n=o[e].split(',');for(let e=0;e<n.length;e++)t.push(this.indexedCoordinates.getLatitude(n[e]));a.push(t)}return!0;case'lngCoord':return i=Math.fround(Number(i)),s.push(i),!0;case'latCoord':return i=Math.fround(Number(i)),a.push(i),!0;case'lngSegment':n=i.split(',');for(let e=0;e<n.length;e++)s.push(Math.fround(Number(n[e])));return!0;case'latSegment':n=i.split(',');for(let e=0;e<n.length;e++)a.push(Math.fround(Number(n[e])));return!0;case'lngRings':o=i.split('|');for(let e=0;e<o.length;e++){let t=new Array;n=o[e].split(',');for(let e=0;e<n.length;e++)t.push(Math.fround(Number(n[e])));s.push(t)}return!0;case'latRings':o=i.split('|');for(let e=0;e<o.length;e++){let t=new Array;n=o[e].split(',');for(let e=0;e<n.length;e++)t.push(Math.fround(Number(n[e])));a.push(t)}return!0;case'arcRefs':o=i.split('|');for(let e=0;e<o.length;e++){var l=new Array,u=new Array;n=o[e].split(',');for(let e=0;e<n.length;e++){var h=Number(n[e]),d=Math.abs(h),c=this.topology.taeArcs[d];if(h<0)var p=c.getReverseIndexes();else p=c;for(let e=0;e<p.length-1;e++){var m=p[e],g=this.topology.taeCoords[m];null==g&&terminal.trace(`coordsIndex ${m} not in this.topology.taeCoords`),l.push(Math.fround(g.longitude)),u.push(Math.fround(g.latitude))}}s.push(l),a.push(u)}return!0;default:return this.handleProperties(e,t,r,i)}}handleProperties(e,t,r,s){switch(expect(e,['GcsPointFeature','GcsLineFeature','GcsPolygonFeature']),expect(t,'String'),expect(r,'String'),expect(s,'String'),r){case'tinyUint':case'shortUint':case'longUint':case'tinyInt':case'shortInt':case'longInt':case'float':return e.kvPairs[t]=''==s||'null'==s?null:Number(s),!0;case'tinyUint[]':case'shortUint[]':case'longUint[]':case'tinyInt[]':case'shortInt[]':case'longInt[]':case'float[]':var a=s.split('","');return e.kvPairs[t]=a.map((e=>null==e||''==e?'null':Number(e))),!0;case'string':return''==s&&(s=null),e.kvPairs[t]=s,!0;case'string[]':s.length;a=(s=s.substring(2,s.length-2)).split('","');return e.kvPairs[t]=a.map((e=>null==e||''==e?'null':e)),!0;case'json':return e.kvPairs[t]=JSON.parse(s),!0;default:return terminal.trace(`handleProperties encountered unknown propertyType '${r}' ${t} = ${s}`),e.kvPairs[t]=s,!1}}readLine(){for(var e=this.payloadOffset,t=0,r='';'\n'!=r;)if(r=this.payload.charAt(e+t),e+ ++t>this.payloadLength)throw new Error('reached end of file before it was expected');return this.payloadOffset=e+t,this.payload.substr(e,t-1)}}