loaders.gl/dist/esm/common/smart-fetch.js

Framework-independent loaders for 3D graphics formats

import path from 'path';
export function smartFetch(url, loaders, options) {
  /* global fetch */
  return fetch(url).then(function (response) {
    return response.text();
  }).then(function (text) {
    return smartParse(text, url);
  });
} // Find a loader that works for extension/text

export function smartParse(text, url, loaders, options) {
  var loader = getLoader(url, text, loaders);

  if (!loader.parseText) {
    throw new Error("".concat(loader.name, " loader cannot handle text"));
  }

  return loader.parseText(text, options);
} // Search the loaders array argument for a loader that matches extension or text

function getLoader(url, text, loaders) {
  // Get extension without
  var extension = path.extname(url) || url;

  if (extension.length && extension[0] === '.') {
    extension = extension.substr(1).toLowerCase();
  }

  var _iteratorNormalCompletion = true;
  var _didIteratorError = false;
  var _iteratorError = undefined;

  try {
    for (var _iterator = loaders[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
      var loader = _step.value;

      if (loader.extension === extension) {
        return loader;
      }
    }
  } catch (err) {
    _didIteratorError = true;
    _iteratorError = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion && _iterator.return != null) {
        _iterator.return();
      }
    } finally {
      if (_didIteratorError) {
        throw _iteratorError;
      }
    }
  }

  var _iteratorNormalCompletion2 = true;
  var _didIteratorError2 = false;
  var _iteratorError2 = undefined;

  try {
    for (var _iterator2 = loaders[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {
      var _loader = _step2.value;

      if (_loader.name.toLowerCase === extension) {
        return _loader;
      }
    }
  } catch (err) {
    _didIteratorError2 = true;
    _iteratorError2 = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion2 && _iterator2.return != null) {
        _iterator2.return();
      }
    } finally {
      if (_didIteratorError2) {
        throw _iteratorError2;
      }
    }
  }

  var _iteratorNormalCompletion3 = true;
  var _didIteratorError3 = false;
  var _iteratorError3 = undefined;

  try {
    for (var _iterator3 = loaders[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {
      var _loader2 = _step3.value;

      if (_loader2.testText && _loader2.testText(text)) {
        return _loader2;
      }
    }
  } catch (err) {
    _didIteratorError3 = true;
    _iteratorError3 = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion3 && _iterator3.return != null) {
        _iterator3.return();
      }
    } finally {
      if (_didIteratorError3) {
        throw _iteratorError3;
      }
    }
  }

  return null;
}
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