BugZilla 518578 : Let users to use .Chefile in addition to Chefile

dockerfiles/lib/src/internal/dir/che-dir.ts

@@ -69,6 +69,17 @@ export class CheDir {
   currentFolder: string = this.path.resolve('./');
   folderName: any;
   cheFile : any;
+
+  /**
+   * Alternate path to the Chefile file with .Chefile
+   */
+  dotCheFile: string;
+
+  /**
+   * Alternate path to the Chefile file with .chefile
+   */
+  dotCheFileLowercase: string;
+
   dotCheFolder : any;
   workspacesFolder : any;
   cliFolder : any;
@@ -100,6 +111,8 @@ export class CheDir {
     this.currentFolder = this.path.resolve(args[0]);
     this.folderName = this.path.basename(this.currentFolder);
     this.cheFile = this.path.resolve(this.currentFolder, 'Chefile');
+    this.dotCheFile = this.path.resolve(this.currentFolder, '.Chefile');
+    this.dotCheFileLowercase = this.path.resolve(this.currentFolder, '.chefile');
     this.dotCheFolder = this.path.resolve(this.currentFolder, '.che');
     this.dotCheIdFile = this.path.resolve(this.dotCheFolder, 'id');
     this.dotCheSshPrivateKeyFile = this.path.resolve(this.dotCheFolder, 'ssh-key.private');
@@ -197,12 +210,16 @@ export class CheDir {
 
   parse() {
 
-    try {
-      this.fs.statSync(this.cheFile);
-      // we have a file
-    } catch (e) {
+    let cheFiles : Array<any> = this.findCheFiles();
+
+    if (cheFiles.length === 0) {
       Log.getLogger().debug('No chefile defined, use default settings');
       return;
+    } else if (cheFiles.length >= 2) {
+      throw new Error('Error while parsing the Chefile as it was found at ' + JSON.stringify(cheFiles) + '. Only one file at a time is allowed.');
+    } else {
+      this.cheFile = cheFiles[0];
+      Log.getLogger().debug('Parsing chefile with name ', this.cheFile);
     }
 
     // load the chefile script if defined
@@ -366,25 +383,70 @@ export class CheDir {
 
   }
 
+  /**
+   * Checks if the given file is existing or not
+   * @param filename the  path to check
+   * @returns {boolean} true if it exists
+   */
+  fileExistsCaseSensitive(filename) : boolean {
+    var dir = this.path.dirname(filename);
+    if (dir === '/' || dir === '.') {
+      return true;
+    }
+    var filenames = this.fs.readdirSync(dir);
+    if (filenames.indexOf(this.path.basename(filename)) === -1) {
+      return false;
+    }
+    return this.fileExistsCaseSensitive(dir);
+  }
+
+  /**
+   * Search all the chefiles with the corresponding pattern : Chefile, .Chefile, .chefile
+   * @returns {Array<any>} containing all references found
+   */
+  findCheFiles() : Array<any> {
+
+    let foundCheFiles : Array<any> = new Array<any>();
+
+    // Try with Chefile
+    if (this.fileExistsCaseSensitive(this.cheFile)) {
+      Log.getLogger().debug('Chefile is present at ', this.cheFile);
+      foundCheFiles.push(this.cheFile);
+    }
+
+    // Try with .Chefile
+    if (this.fileExistsCaseSensitive(this.dotCheFile)) {
+      Log.getLogger().debug('The alternate file .Chefile is present at ', this.dotCheFile);
+      foundCheFiles.push(this.dotCheFile);
+    }
+
+    // Try with .chefile
+    if (this.fileExistsCaseSensitive(this.dotCheFileLowercase)) {
+      this.fs.statSync(this.dotCheFileLowercase);
+      Log.getLogger().debug('The alternate file .chefile is present at ', this.dotCheFileLowercase);
+      foundCheFiles.push(this.dotCheFileLowercase);
+    }
+    return foundCheFiles;
+  }
+
 
   init() : Promise<any> {
     return this.isInitialized().then((isInitialized) => {
       if (isInitialized) {
         Log.getLogger().warn('Che already initialized');
       } else {
         // needs to create folders
+        Log.getLogger().info('Adding', this.dotCheFolder, 'directory');
         this.initCheFolders();
 
+        let cheFiles: Array<any> = this.findCheFiles();
+
         // write a default chefile if there is none
-        try {
-          this.fs.statSync(this.cheFile);
-          Log.getLogger().debug('Chefile is present at ', this.cheFile);
-        } catch (e) {
+        if (cheFiles.length === 0) {
           // write default
           Log.getLogger().debug('Write a default Chefile at ', this.cheFile);
           this.writeDefaultChefile();
         }
-        Log.getLogger().info('Adding', this.dotCheFolder, 'directory');
         return true;
       }