Implements a crawler to find all directly used packages

- Holds a 'default' `README.md` with the default content.
- Writes down all found packages with links to their repositories.

DEVELOPMENT.rst

@@ -166,6 +166,10 @@ To extract translations run::
 
     $ npm run extract
 
+When updating, adding or changing used packages from npm, please update the README.md using following command::
+
+    $ npm run licenses
+
 OpenSlides in big mode
 ======================
 

client/README.md

@@ -54,3 +54,72 @@ We are using ngx-translate for translation purposes.
 Use `npm run extract` to extract strings and update elements an with translation functions.
 
 Language files can be found in `/src/assets/i18n`.
+
+### Used software
+
+OpenSlides uses the following software or parts of them:
+
+- [@angular/animations@7.2.6](https://github.com/angular/angular), License: MIT
+- [@angular/cdk@7.3.3](https://github.com/angular/material2), License: MIT
+- [@angular/common@7.2.6](https://github.com/angular/angular), License: MIT
+- [@angular/compiler@7.2.6](https://github.com/angular/angular), License: MIT
+- [@angular/core@7.2.6](https://github.com/angular/angular), License: MIT
+- [@angular/forms@7.2.6](https://github.com/angular/angular), License: MIT
+- [@angular/http@7.2.6](https://github.com/angular/angular), License: MIT
+- [@angular/material@7.3.3](https://github.com/angular/material2), License: MIT
+- [@angular/platform-browser-dynamic@7.2.6](https://github.com/angular/angular), License: MIT
+- [@angular/platform-browser@7.2.6](https://github.com/angular/angular), License: MIT
+- [@angular/pwa@0.13.2](https://github.com/angular/angular-cli), License: MIT
+- [@angular/router@7.2.6](https://github.com/angular/angular), License: MIT
+- [@angular/service-worker@7.2.6](https://github.com/angular/angular), License: MIT
+- [@ngx-pwa/local-storage@7.4.1](https://github.com/cyrilletuzi/angular-async-local-storage), License: MIT
+- [@ngx-translate/core@11.0.1](https://github.com/ngx-translate/core), License: MIT
+- [@ngx-translate/http-loader@4.0.0](https://github.com/ngx-translate/http-loader), License: MIT
+- [@tinymce/tinymce-angular@3.0.0](https://github.com/tinymce/tinymce-angular), License: Apache-2.0
+- [core-js@2.6.5](https://github.com/zloirock/core-js), License: MIT
+- [css-element-queries@1.1.1](https://github.com/marcj/css-element-queries), License: MIT
+- [exceljs@1.8.0](https://github.com/exceljs/exceljs), License: MIT
+- [file-saver@2.0.1](https://github.com/eligrey/FileSaver.js), License: MIT
+- [hammerjs@2.0.8](https://github.com/hammerjs/hammer.js), License: MIT
+- [material-icon-font@0.1.0](https://github.com//petergng/svgFontCreator), License: ISC
+- [ng-pick-datetime@7.0.0](https://github.com/DanielYKPan/date-time-picker), License: MIT
+- [ngx-file-drop@5.0.5](https://github.com/georgipeltekov/ngx-file-drop), License: MIT
+- [ngx-mat-select-search@1.5.2](https://github.com/bithost-gmbh/ngx-mat-select-search), License: MIT
+- [ngx-papaparse@3.0.2](https://github.com/alberthaff/ngx-papaparse), License: MIT
+- [pdfmake@0.1.53](https://github.com/bpampuch/pdfmake), License: MIT
+- [po2json@1.0.0-alpha](https://github.com/mikeedwards/po2json), License: GNU Library General Public License
+- [rxjs@6.4.0](https://github.com/reactivex/rxjs), License: Apache-2.0
+- [tinymce@4.9.2](https://github.com/tinymce/tinymce-dist), License: LGPL-2.1
+- [uuid@3.3.2](https://github.com/kelektiv/node-uuid), License: MIT
+- [zone.js@0.8.29](https://github.com/angular/zone.js), License: MIT
+- [@angular-devkit/build-angular@0.13.2](https://github.com/angular/angular-cli), License: MIT
+- [@angular/cli@7.3.2](https://github.com/angular/angular-cli), License: MIT
+- [@angular/compiler-cli@7.2.6](https://github.com/angular/angular), License: MIT
+- [@angular/language-service@7.2.6](https://github.com/angular/angular), License: MIT
+- [@biesbjerg/ngx-translate-extract@2.3.4](https://github.com/biesbjerg/ngx-translate-extract), License: MIT
+- [@compodoc/compodoc@1.1.8](https://github.com/compodoc/compodoc), License: MIT
+- [@types/jasmine@3.3.9](https://github.com/DefinitelyTyped/DefinitelyTyped), License: MIT
+- [@types/jasminewd2@2.0.6](https://github.com/DefinitelyTyped/DefinitelyTyped), License: MIT
+- [@types/node@11.9.4](https://github.com/DefinitelyTyped/DefinitelyTyped), License: MIT
+- [@types/yargs@12.0.9](https://github.com/DefinitelyTyped/DefinitelyTyped), License: MIT
+- [codelyzer@4.5.0](https://github.com/mgechev/codelyzer), License: MIT
+- [fs@0.0.1-security](https://github.com/npm/security-holder), License: ISC
+- [husky@1.3.1](https://github.com/typicode/husky), License: MIT
+- [jasmine-core@3.3.0](https://github.com/jasmine/jasmine), License: MIT
+- [jasmine-spec-reporter@4.2.1](https://github.com/bcaudan/jasmine-spec-reporter), License: Apache-2.0
+- [karma-chrome-launcher@2.2.0](https://github.com/karma-runner/karma-chrome-launcher), License: MIT
+- [karma-coverage-istanbul-reporter@2.0.5](https://github.com/mattlewis92/karma-coverage-istanbul-reporter), License: MIT
+- [karma-jasmine-html-reporter@1.4.0](https://github.com/dfederm/karma-jasmine-html-reporter), License: MIT
+- [karma-jasmine@2.0.1](https://github.com/karma-runner/karma-jasmine), License: MIT
+- [karma@4.0.0](https://github.com/karma-runner/karma), License: MIT
+- [npm-license-crawler@0.2.1](https://github.com/mwittig/npm-license-crawler), License: BSD-3-Clause
+- [npm-run-all@4.1.5](https://github.com/mysticatea/npm-run-all), License: MIT
+- [prettier@1.17.0](https://github.com/prettier/prettier), License: MIT
+- [protractor@5.4.2](https://github.com/angular/protractor), License: MIT
+- [source-map-explorer@1.7.0](https://github.com/danvk/source-map-explorer), License: Apache-2.0
+- [terser@3.16.1](https://github.com/fabiosantoscode/terser), License: BSD-2-Clause
+- [ts-node@8.0.2](https://github.com/TypeStrong/ts-node), License: MIT
+- [tslint@5.12.1](https://github.com/palantir/tslint), License: Apache-2.0
+- [tsutils@3.8.0](https://github.com/ajafff/tsutils), License: MIT
+- [typescript@3.2.4](https://github.com/Microsoft/TypeScript), License: Apache-2.0
+- [webpack-bundle-analyzer@3.0.4](https://github.com/webpack-contrib/webpack-bundle-analyzer), License: MIT

client/package.json

@@ -16,6 +16,7 @@
         "test": "ng test",
         "lint": "ng lint",
         "e2e": "ng e2e",
+        "licenses": "node src/crawler.js",
         "compodoc": "./node_modules/.bin/compodoc --hideGenerator -p src/tsconfig.app.json -n 'OpenSlides Documentation' -d ../Compodoc -s -w -t -o --port",
         "extract": "ngx-translate-extract -i ./src -o ./src/assets/i18n/template-en.pot --clean --sort --format pot -m _",
         "po2json": "./node_modules/.bin/po2json -f mf src/assets/i18n/de.po src/assets/i18n/de.json && ./node_modules/.bin/po2json -f mf src/assets/i18n/cs.po src/assets/i18n/cs.json",
@@ -70,6 +71,7 @@
         "@types/node": "^11.9.4",
         "@types/yargs": "^12.0.9",
         "codelyzer": "~4.5.0",
+        "fs": "0.0.1-security",
         "husky": "^1.3.1",
         "jasmine-core": "~3.3.0",
         "jasmine-spec-reporter": "~4.2.1",
@@ -78,6 +80,7 @@
         "karma-coverage-istanbul-reporter": "^2.0.5",
         "karma-jasmine": "~2.0.1",
         "karma-jasmine-html-reporter": "^1.4.0",
+        "npm-license-crawler": "^0.2.1",
         "npm-run-all": "^4.1.5",
         "prettier": "^1.17.0",
         "protractor": "^5.4.2",

client/src/crawler.js

@@ -0,0 +1,80 @@
+const crawler = require('npm-license-crawler');
+const fs = require('fs');
+
+/**
+ * Describes the options for dumping the licenses.
+ */
+const options = {
+    start: ['.'],
+    json: 'licenses.json',
+    onlyDirectDependencies: true
+};
+
+const production = {
+    ...options,
+    production: true
+};
+
+const development = {
+    ...options,
+    development: true
+};
+
+let data = '';
+
+/**
+ * To the `README.md` the content with used packages and
+ * their licenses will appended to the end of the default content.
+ */
+fs.readFile('README.md', {
+    encoding: 'utf8',
+    flag: 'r'
+}, async (_, copy) => {
+    let heading = '### Used software';
+    const index = copy.search(heading);
+
+    if (index > 0) {
+        data = copy.slice(0, index) + heading + '\n';
+    } else {
+        data = copy + '\n' + heading + '\n';
+    }
+
+    data += '\nOpenSlides uses the following software or parts of them:\n\n';
+
+});
+
+/**
+ * Dump the licenses
+ */
+crawler.dumpLicenses(production, async (_, res) => {
+    writeToFile(res);
+
+    await crawler.dumpLicenses(development, async (_, res) => {
+        writeToFile(res);
+        await fs.writeFile('README.md', data, 'utf8', async () => {
+            // Here the previously created file will be deleted.
+            await fs.unlink('licenses.json', () => {});
+        });
+    });
+})
+
+/**
+ * Function to write down a list of all found packages in the `package.json`.
+ *
+ * @param {json} licenses are all found packages in the project.
+ */
+function writeToFile(licenses) {
+    let resources = [];
+    for (let key in licenses) {
+        resources.push({
+            name: key,
+            repository: licenses[key]['repository'],
+            license: licenses[key]['licenses']
+        });
+    }
+
+    for (let entry of resources) {
+        data += '- [' + entry.name + ']' + '(' + entry.repository + ')'
+        + ', License: ' + entry.license + '\n';
+    }
+}