Function readFromGist

src/util.ts:209–230

(url:string, callback:(error:Error, content?:GistResponse) => void)

interface GistResponse {id: string, url: string, files: {[name:string]: {content: string}}}

export function readFromGist(url:string, callback:(error:Error, content?:GistResponse) => void) {
  let gistId = gistIdFromUrl(url);

  if(!gistId) return callback(new Error(`Invalid gist url: '${url}'.`));

  let apiUrl = `https://api.github.com/gists/${gistId}`;

  let request = new XMLHttpRequest();
  request.onreadystatechange = function() {
    if(request.readyState === 4) {
      if(request.status !== 200) {
        return callback(new Error(`HTTP Response: ${request.status}`));
      }

      let response = JSON.parse(request.responseText);

      callback(undefined, response);
    }
  }
  request.open("GET", apiUrl);
  request.send();
}