kepler.gl/dist/processors/file-handler.js

kepler.gl is a webgl based application to visualize large scale location data in the browser

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _extends2 = require('babel-runtime/helpers/extends');

var _extends3 = _interopRequireDefault(_extends2);

var _typeof2 = require('babel-runtime/helpers/typeof');

var _typeof3 = _interopRequireDefault(_typeof2);

exports.getFileHandler = getFileHandler;
exports.getFileType = getFileType;
exports.loadCsv = loadCsv;
exports.isKeplerGlMap = isKeplerGlMap;
exports.determineJsonProcess = determineJsonProcess;
exports.loadJSON = loadJSON;
exports.processKeplerglJSON = processKeplerglJSON;

var _window = require('global/window');

var _dataProcessor = require('./data-processor');

var _schemas = require('../schemas');

var _schemas2 = _interopRequireDefault(_schemas);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var FILE_HANDLERS = {
  csv: loadCsv,
  json: loadJSON
}; // Copyright (c) 2018 Uber Technologies, Inc.
//
// 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.

function getFileHandler(fileBlob) {
  var type = getFileType(fileBlob.name);
  return FILE_HANDLERS[type];
}

function getFileType(filename) {
  if (filename.endsWith('csv')) {
    return 'csv';
  } else if (filename.endsWith('json') || filename.endsWith('geojson')) {
    // Read GeoJson from browser
    return 'json';
  }

  // Wait to add other file type handler
  return 'other';
}

function readCSVFile(fileBlob) {
  return new Promise(function (resolve, reject) {
    var fileReader = new _window.FileReader();
    fileReader.onload = function (_ref) {
      var result = _ref.target.result;

      resolve(result);
    };

    fileReader.readAsText(fileBlob);
  });
}

function loadCsv(fileBlob) {
  var processor = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : _dataProcessor.processCsvData;

  return readCSVFile(fileBlob).then(function (rawData) {
    return rawData ? processor(rawData) : null;
  });
}

function readJSONFile(fileBlob) {
  return new Promise(function (resolve, reject) {
    var fileReader = new _window.FileReader();
    fileReader.onload = function (_ref2) {
      var result = _ref2.target.result;

      try {
        var json = JSON.parse(result);
        resolve(json);
      } catch (err) {
        resolve(null);
      }
    };

    fileReader.readAsText(fileBlob);
  });
}

function isKeplerGlMap(json) {
  return (typeof json === 'undefined' ? 'undefined' : (0, _typeof3.default)(json)) === 'object' && json.datasets && json.config && json.info && json.info.app === 'kepler.gl';
}

function determineJsonProcess(jsonData, defaultProcessor) {
  if (isKeplerGlMap(jsonData)) {
    return processKeplerglJSON;
  }

  return defaultProcessor;
}

function loadJSON(fileBlob) {
  var processor = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : _dataProcessor.processGeojson;

  return readJSONFile(fileBlob).then(function (rawData) {
    return rawData ? determineJsonProcess(rawData, processor)(rawData) : null;
  });
}

function processKeplerglJSON(rawData) {
  var data = rawData ? _schemas2.default.load(rawData.datasets, rawData.config) : null;
  return (0, _extends3.default)({}, data, {
    reset: true // this will reset the state
  });
}
//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"sources":["../../src/processors/file-handler.js"],"names":["getFileHandler","getFileType","loadCsv","isKeplerGlMap","determineJsonProcess","loadJSON","processKeplerglJSON","FILE_HANDLERS","csv","json","fileBlob","type","name","filename","endsWith","readCSVFile","Promise","resolve","reject","fileReader","FileReader","onload","result","target","readAsText","processor","processCsvData","then","rawData","readJSONFile","JSON","parse","err","datasets","config","info","app","jsonData","defaultProcessor","processGeojson","data","KeplerGlSchema","load","reset"],"mappings":";;;;;;;;;;;;;;QA6BgBA,c,GAAAA,c;QAKAC,W,GAAAA,W;QAyBAC,O,GAAAA,O;QAsBAC,a,GAAAA,a;QAUAC,oB,GAAAA,oB;QAQAC,Q,GAAAA,Q;QAOAC,mB,GAAAA,mB;;AAtFhB;;AACA;;AACA;;;;;;AAEA,IAAMC,gBAAgB;AACpBC,OAAKN,OADe;AAEpBO,QAAMJ;AAFc,CAAtB,C,CAxBA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAWO,SAASL,cAAT,CAAwBU,QAAxB,EAAkC;AACvC,MAAMC,OAAOV,YAAYS,SAASE,IAArB,CAAb;AACA,SAAOL,cAAcI,IAAd,CAAP;AACD;;AAEM,SAASV,WAAT,CAAqBY,QAArB,EAA+B;AACpC,MAAIA,SAASC,QAAT,CAAkB,KAAlB,CAAJ,EAA8B;AAC5B,WAAO,KAAP;AACD,GAFD,MAIK,IAAID,SAASC,QAAT,CAAkB,MAAlB,KAA6BD,SAASC,QAAT,CAAkB,SAAlB,CAAjC,EAA+D;AAClE;AACA,WAAO,MAAP;AACD;;AAED;AACA,SAAO,OAAP;AACD;;AAED,SAASC,WAAT,CAAqBL,QAArB,EAA+B;AAC7B,SAAO,IAAIM,OAAJ,CAAY,UAACC,OAAD,EAAUC,MAAV,EAAqB;AACtC,QAAMC,aAAa,IAAIC,kBAAJ,EAAnB;AACAD,eAAWE,MAAX,GAAoB,gBAAwB;AAAA,UAAbC,MAAa,QAAtBC,MAAsB,CAAbD,MAAa;;AAC1CL,cAAQK,MAAR;AACD,KAFD;;AAIAH,eAAWK,UAAX,CAAsBd,QAAtB;AACD,GAPM,CAAP;AAQD;;AAEM,SAASR,OAAT,CAAiBQ,QAAjB,EAAuD;AAAA,MAA5Be,SAA4B,uEAAhBC,6BAAgB;;AAC5D,SAAOX,YAAYL,QAAZ,EAAsBiB,IAAtB,CACL;AAAA,WAAYC,UAAUH,UAAUG,OAAV,CAAV,GAA+B,IAA3C;AAAA,GADK,CAAP;AAGD;;AAED,SAASC,YAAT,CAAsBnB,QAAtB,EAAgC;AAC9B,SAAO,IAAIM,OAAJ,CAAY,UAACC,OAAD,EAAUC,MAAV,EAAqB;AACtC,QAAMC,aAAa,IAAIC,kBAAJ,EAAnB;AACAD,eAAWE,MAAX,GAAoB,iBAAwB;AAAA,UAAbC,MAAa,SAAtBC,MAAsB,CAAbD,MAAa;;AAC1C,UAAI;AACF,YAAMb,OAAOqB,KAAKC,KAAL,CAAWT,MAAX,CAAb;AACAL,gBAAQR,IAAR;AACD,OAHD,CAGE,OAAOuB,GAAP,EAAY;AACZf,gBAAQ,IAAR;AACD;AACF,KAPD;;AASAE,eAAWK,UAAX,CAAsBd,QAAtB;AACD,GAZM,CAAP;AAaD;;AAEM,SAASP,aAAT,CAAuBM,IAAvB,EAA6B;AAClC,SACE,QAAOA,IAAP,uDAAOA,IAAP,OAAgB,QAAhB,IACAA,KAAKwB,QADL,IAEAxB,KAAKyB,MAFL,IAGAzB,KAAK0B,IAHL,IAIA1B,KAAK0B,IAAL,CAAUC,GAAV,KAAkB,WALpB;AAOD;;AAEM,SAAShC,oBAAT,CAA8BiC,QAA9B,EAAwCC,gBAAxC,EAA0D;AAC/D,MAAInC,cAAckC,QAAd,CAAJ,EAA6B;AAC3B,WAAO/B,mBAAP;AACD;;AAED,SAAOgC,gBAAP;AACD;;AAEM,SAASjC,QAAT,CAAkBK,QAAlB,EAAwD;AAAA,MAA5Be,SAA4B,uEAAhBc,6BAAgB;;AAC7D,SAAOV,aAAanB,QAAb,EAAuBiB,IAAvB,CACL;AAAA,WACEC,UAAUxB,qBAAqBwB,OAArB,EAA8BH,SAA9B,EAAyCG,OAAzC,CAAV,GAA8D,IADhE;AAAA,GADK,CAAP;AAID;;AAEM,SAAStB,mBAAT,CAA6BsB,OAA7B,EAAsC;AAC3C,MAAMY,OAAOZ,UACTa,kBAAeC,IAAf,CAAoBd,QAAQK,QAA5B,EAAsCL,QAAQM,MAA9C,CADS,GAET,IAFJ;AAGA,oCACKM,IADL;AAEEG,WAAO,IAFT,CAEc;AAFd;AAID","file":"file-handler.js","sourcesContent":["// Copyright (c) 2018 Uber Technologies, Inc.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a copy\n// of this software and associated documentation files (the \"Software\"), to deal\n// in the Software without restriction, including without limitation the rights\n// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n// copies of the Software, and to permit persons to whom the Software is\n// furnished to do so, subject to the following conditions:\n//\n// The above copyright notice and this permission notice shall be included in\n// all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n// THE SOFTWARE.\n\nimport {FileReader} from 'global/window';\nimport {processCsvData, processGeojson} from './data-processor';\nimport KeplerGlSchema from 'schemas';\n\nconst FILE_HANDLERS = {\n  csv: loadCsv,\n  json: loadJSON\n};\n\nexport function getFileHandler(fileBlob) {\n  const type = getFileType(fileBlob.name);\n  return FILE_HANDLERS[type];\n}\n\nexport function getFileType(filename) {\n  if (filename.endsWith('csv')) {\n    return 'csv';\n  }\n\n  else if (filename.endsWith('json') || filename.endsWith('geojson')) {\n    // Read GeoJson from browser\n    return 'json';\n  }\n\n  // Wait to add other file type handler\n  return 'other';\n}\n\nfunction readCSVFile(fileBlob) {\n  return new Promise((resolve, reject) => {\n    const fileReader = new FileReader();\n    fileReader.onload = ({target: {result}}) => {\n      resolve(result);\n    };\n\n    fileReader.readAsText(fileBlob);\n  });\n}\n\nexport function loadCsv(fileBlob, processor = processCsvData) {\n  return readCSVFile(fileBlob).then(\n    rawData => (rawData ? processor(rawData) : null)\n  );\n}\n\nfunction readJSONFile(fileBlob) {\n  return new Promise((resolve, reject) => {\n    const fileReader = new FileReader();\n    fileReader.onload = ({target: {result}}) => {\n      try {\n        const json = JSON.parse(result);\n        resolve(json);\n      } catch (err) {\n        resolve(null);\n      }\n    };\n\n    fileReader.readAsText(fileBlob);\n  });\n}\n\nexport function isKeplerGlMap(json) {\n  return (\n    typeof json === 'object' &&\n    json.datasets &&\n    json.config &&\n    json.info &&\n    json.info.app === 'kepler.gl'\n  );\n}\n\nexport function determineJsonProcess(jsonData, defaultProcessor) {\n  if (isKeplerGlMap(jsonData)) {\n    return processKeplerglJSON;\n  }\n\n  return defaultProcessor;\n}\n\nexport function loadJSON(fileBlob, processor = processGeojson) {\n  return readJSONFile(fileBlob).then(\n    rawData =>\n      rawData ? determineJsonProcess(rawData, processor)(rawData) : null\n  );\n}\n\nexport function processKeplerglJSON(rawData) {\n  const data = rawData\n    ? KeplerGlSchema.load(rawData.datasets, rawData.config)\n    : null;\n  return {\n    ...data,\n    reset: true // this will reset the state\n  };\n}\n"]}