Add Github Enterprise repositories support

Signed-off-by: Igor Vinokur <ivinokur@redhat.com>

tools/devworkspace-generator/src/github/github-resolver.ts

@@ -18,18 +18,20 @@ import { injectable } from 'inversify';
 export class GithubResolver {
   // eslint-disable-next-line max-len
   static readonly GITHUB_URL_PATTERN =
-    /^(?:http)(?:s)?(?:\:\/\/)github\.com\/(?<repoUser>[^\/]+)\/(?<repoName>[^\/]+)((\/)|(?:\/(blob|tree)\/(?<branchName>[^\/]+)(?:\/(?<subFolder>.*))?))?$/;
+    /^(?<scheme>https?):\/\/(?<host>github(\..+)?\.[^\/]+)\/(?<repoUser>[^\/]+)\/(?<repoName>[^\/]+)((\/)|\/(blob|tree)\/(?<branchName>[^\/]+)(?:\/(?<subFolder>.*))?)?$/;
 
   resolve(link: string): GithubUrl {
     const match = GithubResolver.GITHUB_URL_PATTERN.exec(link);
     if (!match) {
       throw new Error(`Invalid github URL: ${link}`);
     }
+    const scheme = this.getGroup(match, 'scheme');
+    const hostName = this.getGroup(match, 'host');
     const repoUser = this.getGroup(match, 'repoUser');
     const repoName = this.getGroup(match, 'repoName');
     const branchName = this.getGroup(match, 'branchName', 'HEAD');
     const subFolder = this.getGroup(match, 'subFolder');
-    return new GithubUrl(repoUser, repoName, branchName, subFolder);
+    return new GithubUrl(scheme, hostName, repoUser, repoName, branchName, subFolder);
   }
 
   getGroup(match: RegExpExecArray, groupName: string, defaultValue?: string) {

tools/devworkspace-generator/src/github/github-url.ts

@@ -12,10 +12,9 @@
  * Provides helper methods on top of github URL to get for example raw content of get relative links
  */
 export class GithubUrl {
-  // raw link
-  static readonly RAW_LINK = 'https://raw.githubusercontent.com';
-
   constructor(
+    private readonly scheme: string,
+    private readonly hostName: string,
     private readonly repoUser: string,
     private readonly repoName: string,
     private readonly branchName: string,
@@ -26,15 +25,16 @@ export class GithubUrl {
    * Provides the raw link to the given path based on the current repository information
    */
   getContentUrl(path: string): string {
-    return `${GithubUrl.RAW_LINK}/${this.repoUser}/${this.repoName}/${this.branchName}/${path}`;
+    const hostName = this.hostName === 'github.com' ? 'githubusercontent.com' : this.hostName;
+    return `${this.scheme}://raw.${hostName}/${this.repoUser}/${this.repoName}/${this.branchName}/${path}`;
   }
 
   getUrl(): string {
-    return `https://github.com/${this.repoUser}/${this.repoName}/tree/${this.branchName}/${this.subFolder}`;
+    return `${this.scheme}://${this.hostName}/${this.repoUser}/${this.repoName}/tree/${this.branchName}/${this.subFolder}`;
   }
 
   getCloneUrl(): string {
-    return `https://github.com/${this.repoUser}/${this.repoName}.git`;
+    return `${this.scheme}://${this.hostName}/${this.repoUser}/${this.repoName}.git`;
   }
 
   getRepoName(): string {

tools/devworkspace-generator/tests/github/github-resolver.spec.ts

@@ -27,24 +27,28 @@ describe('Test PluginRegistryResolver', () => {
   });
 
   test('basic resolve', async () => {
-    expect(githubResolver.resolve('http://github.com/eclipse/che').getUrl()).toBe(
+    expect(githubResolver.resolve('https://github.com/eclipse/che').getUrl()).toBe(
       'https://github.com/eclipse/che/tree/HEAD/'
     );
     expect(githubResolver.resolve('https://github.com/eclipse/che/tree/7.30.x').getUrl()).toBe(
       'https://github.com/eclipse/che/tree/7.30.x/'
     );
 
-    expect(githubResolver.resolve('http://github.com/eclipse/che').getContentUrl('README.md')).toBe(
+    expect(githubResolver.resolve('https://github.com/eclipse/che').getContentUrl('README.md')).toBe(
       'https://raw.githubusercontent.com/eclipse/che/HEAD/README.md'
     );
 
-    expect(githubResolver.resolve('http://github.com/eclipse/che').getCloneUrl()).toBe(
+    expect(githubResolver.resolve('https://github.mycompany.net/user/repo').getContentUrl('README.md')).toBe(
+      'https://raw.github.mycompany.net/user/repo/HEAD/README.md'
+    );
+
+    expect(githubResolver.resolve('https://github.com/eclipse/che').getCloneUrl()).toBe(
       'https://github.com/eclipse/che.git'
     );
 
     expect(githubResolver.resolve('https://github.com/eclipse/che').getRepoName()).toBe('che');
 
-    expect(githubResolver.resolve('http://github.com/eclipse/che').getBranchName()).toBe('HEAD');
+    expect(githubResolver.resolve('https://github.com/eclipse/che').getBranchName()).toBe('HEAD');
     expect(githubResolver.resolve('https://github.com/eclipse/che/tree/test-branch').getBranchName()).toBe(
       'test-branch'
     );