# rss-parser [![Version][npm-image]][npm-link] [![Build Status][build-image]][build-link] [![Downloads][downloads-image]][npm-link] [downloads-image]: https://img.shields.io/npm/dm/rss-parser.svg [npm-image]: https://img.shields.io/npm/v/rss-parser.svg [npm-link]: https://npmjs.org/package/rss-parser [build-image]: https://github.com/rbren/rss-parser/workflows/tests/badge.svg [build-link]: https://github.com/rbren/rss-parser/actions A small library for turning RSS XML feeds into JavaScript objects. ## Installation ```bash npm install --save rss-parser ``` ## Usage You can parse RSS from a URL (`parser.parseURL`) or an XML string (`parser.parseString`). Both callbacks and Promises are supported. ### NodeJS Here's an example in NodeJS using Promises with async/await: ```js let Parser = require('rss-parser'); let parser = new Parser(); (async () => { let feed = await parser.parseURL('https://www.reddit.com/.rss'); console.log(feed.title); feed.items.forEach(item => { console.log(item.title + ':' + item.link) }); })(); ``` ### TypeScript When using TypeScript, you can set a type to control the custom fields: ```typescript import Parser from 'rss-parser'; type CustomFeed = {foo: string}; type CustomItem = {bar: number}; const parser: Parser = new Parser({ customFields: { feed: ['foo', 'baz'], // ^ will error because `baz` is not a key of CustomFeed item: ['bar'] } }); (async () => { const feed = await parser.parseURL('https://www.reddit.com/.rss'); console.log(feed.title); // feed will have a `foo` property, type as a string feed.items.forEach(item => { console.log(item.title + ':' + item.link) // item will have a `bar` property type as a number }); })(); ``` ### Web > We recommend using a bundler like [webpack](https://webpack.js.org/), but we also provide > pre-built browser distributions in the `dist/` folder. If you use the pre-built distribution, > you'll need a [polyfill](https://github.com/taylorhakes/promise-polyfill) for Promise support. Here's an example in the browser using callbacks: ```html ``` ### Upgrading from v2 to v3 A few minor breaking changes were made in v3. Here's what you need to know: * You need to construct a `new Parser()` before calling `parseString` or `parseURL` * `parseFile` is no longer available (for better browser support) * `options` are now passed to the Parser constructor * `parsed.feed` is now just `feed` (top-level object removed) * `feed.entries` is now `feed.items` (to better match RSS XML) ## Output Check out the full output format in [test/output/reddit.json](test/output/reddit.json) ```yaml feedUrl: 'https://www.reddit.com/.rss' title: 'reddit: the front page of the internet' description: "" link: 'https://www.reddit.com/' items: - title: 'The water is too deep, so he improvises' link: 'https://www.reddit.com/r/funny/comments/3skxqc/the_water_is_too_deep_so_he_improvises/' pubDate: 'Thu, 12 Nov 2015 21:16:39 +0000' creator: "John Doe" content: 'this is a link & this is bold text' contentSnippet: 'this is a link & this is bold text' guid: 'https://www.reddit.com/r/funny/comments/3skxqc/the_water_is_too_deep_so_he_improvises/' categories: - funny isoDate: '2015-11-12T21:16:39.000Z' ``` ##### Notes: * The `contentSnippet` field strips out HTML tags and unescapes HTML entities * The `dc:` prefix will be removed from all fields * Both `dc:date` and `pubDate` will be available in ISO 8601 format as `isoDate` * If `author` is specified, but not `dc:creator`, `creator` will be set to `author` ([see article](http://www.lowter.com/blogs/2008/2/9/rss-dccreator-author)) * Atom's `updated` becomes `lastBuildDate` for consistency ## XML Options ### Custom Fields If your RSS feed contains fields that aren't currently returned, you can access them using the `customFields` option. ```js let parser = new Parser({ customFields: { feed: ['otherTitle', 'extendedDescription'], item: ['coAuthor','subtitle'], } }); parser.parseURL('https://www.reddit.com/.rss', function(err, feed) { console.log(feed.extendedDescription); feed.items.forEach(function(entry) { console.log(entry.coAuthor + ':' + entry.subtitle); }) }) ``` To rename fields, you can pass in an array with two items, in the format `[fromField, toField]`: ```js let parser = new Parser({ customFields: { item: [ ['dc:coAuthor', 'coAuthor'], ] } }) ``` To pass additional flags, provide an object as the third array item. Currently there is one such flag: * `keepArray (false)` - set to `true` to return *all* values for fields that can have multiple entries. * `includeSnippet (false)` - set to `true` to add an additional field, `${toField}Snippet`, with HTML stripped out ```js let parser = new Parser({ customFields: { item: [ ['media:content', 'media:content', {keepArray: true}], ] } }) ``` ### Default RSS version If your RSS Feed doesn't contain a `` tag with a `version` attribute, you can pass a `defaultRSS` option for the Parser to use: ```js let parser = new Parser({ defaultRSS: 2.0 }); ``` ### xml2js passthrough `rss-parser` uses [xml2js](https://github.com/Leonidas-from-XIV/node-xml2js) to parse XML. You can pass [these options](https://github.com/Leonidas-from-XIV/node-xml2js#options) to `new xml2js.Parser()` by specifying `options.xml2js`: ```js let parser = new Parser({ xml2js: { emptyTag: '--EMPTY--', } }); ``` ## HTTP Options ### Timeout You can set the amount of time (in milliseconds) to wait before the HTTP request times out (default 60 seconds): ```js let parser = new Parser({ timeout: 1000, }); ``` ### Headers You can pass headers to the HTTP request: ```js let parser = new Parser({ headers: {'User-Agent': 'something different'}, }); ``` ### Redirects By default, `parseURL` will follow up to five redirects. You can change this with `options.maxRedirects`. ```js let parser = new Parser({maxRedirects: 100}); ``` ### Request passthrough `rss-parser` uses [http](https://nodejs.org/docs/latest/api/http.html#http_http_get_url_options_callback)/[https](https://nodejs.org/docs/latest/api/https.html#https_https_get_url_options_callback) module to do requests. You can pass [these options](https://nodejs.org/docs/latest/api/https.html#https_https_request_options_callback) to `http.get()`/`https.get()` by specifying `options.requestOptions`: e.g. to allow unauthorized certificate ```js let parser = new Parser({ requestOptions: { rejectUnauthorized: false } }); ``` ## Contributing Contributions are welcome! If you are adding a feature or fixing a bug, please be sure to add a [test case](https://github.com/bobby-brennan/rss-parser/tree/master/test/input) ### Running Tests The tests run the RSS parser for several sample RSS feeds in `test/input` and outputs the resulting JSON into `test/output`. If there are any changes to the output files the tests will fail. To check if your changes affect the output of any test cases, run `npm test` To update the output files with your changes, run `WRITE_GOLDEN=true npm test` ### Publishing Releases ```bash npm run build git commit -a -m "Build distribution" npm version minor # or major/patch npm publish git push --follow-tags ```

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