feat(): Begin bash completion functions and os script

completion/bash_template.sh

@@ -0,0 +1,50 @@
+[[ "$1" != "" ]] || {
+  echo "Usage: source bash_template.sh <scriptname>"
+}
+
+[[ "$1" = "" ]] || {
+  _pm()
+  {
+      local cur prev
+      local IFS=$'\n'
+
+      # Retrieve the original value
+      local width=$(bind -v | sed -n 's/^set completion-display-width //p')
+
+      if [[ $width -ne 0 ]]; then
+          # Change the readline variable
+          bind "set completion-display-width 0"
+          # On the first tab press, expand a common prefix
+          # On the second tab press, list out options
+          # Any subsequent tab presses cycle through these options
+          bind "set show-all-if-ambiguous on"
+          bind "set menu-complete-display-prefix on"
+          bind "TAB: menu-complete"
+          bind "set colored-completion-prefix on"
+          bind "set colored-stats on"
+
+          # Set up PROMPT_COMMAND to reset itself to its current value
+          PROMPT_COMMAND="PROMPT_COMMAND=$(printf %q "$PROMPT_COMMAND")"
+
+          # Set up PROMPT_COMMAND to reset the readline variable
+          PROMPT_COMMAND+="; bind 'set completion-display-width $width'"
+      fi
+
+      cur=${COMP_WORDS[COMP_CWORD]}
+      prev=${COMP_WORDS[COMP_CWORD-1]}
+
+      # Get all options from omelette
+      #COMPREPLY=( $(compgen -W '$(./'$1' --compbash --compgen "${COMP_CWORD}" "${prev}" "${COMP_LINE}")' -- "$cur") )
+
+      # Get all options from commander
+      COMPREPLY=( $(compgen -W '$(./'$1' compgen --shell bash)' -- "$cur") )
+
+      # If no options available, print files and folders
+      if [ ${#COMPREPLY[@]} -eq 0 ]; then
+        COMPREPLY=( $(compgen -f -o default -o plusdirs $cur) )
+      fi
+
+      return 0
+  }
+  complete -F _pm $1
+}

os

@@ -0,0 +1,44 @@
+#!/usr/bin/env node
+
+const This = require('./this');
+
+class Os extends This {
+  constructor() {
+    super();
+    this.version = '0.0.1';
+    this.description = 'Shows informations about the operating system';
+    super.init(); // initialize commander with overridden version and description
+  }
+
+  info() {
+    /**
+     * @program()
+     * @command()
+     */
+    console.warn(`Function ${this._getCurrentFunctionName()} not implemented`);
+  }
+
+  check() {
+    /**
+     * @program()
+     * @command()
+     */
+    console.warn(`Function ${this._getCurrentFunctionName()} not implemented`);
+  }
+
+  checkEnv() {
+    /**
+     * @program()
+     * @command()
+     */
+    console.warn(`Function ${this._getCurrentFunctionName()} not implemented`);
+  }
+
+  start() {
+    super.start();
+  }
+}
+
+// main
+const os = new Os();
+os.start();

this

@@ -1,5 +1,6 @@
 #!/usr/bin/env node
 
+const os = require('os');
 const path = require('path');
 const { Command } = require('commander');
 const shell = require('shelljs');
@@ -28,6 +29,16 @@ class This {
         outputError: (str, write) => write(this._echoInRed(str)),
       });
 
+    // add functions for shell completion
+    this.program
+      .command('compgen')
+      .option('-s, --shell <name>', 'You can select between [bash]', 'bash')
+      .action((arg) => {
+        const words = this.listMethods();
+        console.log(words.join(os.EOL));
+        return process.exit();
+      });
+
     // dynamically add all methods with appropriate docstring to commander
     this.listMethods().forEach((method) => {
       this._parseDocStringToCmd(this[method]);
@@ -40,7 +51,7 @@ class This {
 
   listMethods() {
     const methods = Object.getOwnPropertyNames(Object.getPrototypeOf(this)).filter(
-      (prop) => typeof this[prop] === 'function' && prop !== 'constructor' && !prop.startsWith('_')
+      (prop) => typeof this[prop] === 'function' && prop !== 'constructor' && prop !== 'start' && !prop.startsWith('_')
     );
     return methods;
   }
@@ -69,15 +80,13 @@ class This {
     /**
      * @program()
      */
-    if (this.debugLevel > 0) {
     this.program.exitOverride();
 
     try {
       this.program.parse();
 
-        // show help even if there are no commands registered
+      if (this.debugLevel == 0) {
-        if (this.program.commands.length == 0) {
+        process.exit(1);
-          this.program.outputHelp();
       }
     } catch (err) {
       // this.execCmd(`${this.workingDir}/log echo '\n'`);
@@ -93,14 +102,6 @@ class This {
       this.execCmd(`${this.workingDir}/log echo 'Options: ${opts}'`);
       this.execCmd(`${this.workingDir}/log echo 'Remaining arguments: ${args}'`);
     }
-    } else {
-      this.program.parse();
-
-      // show help even if there are no commands registered
-      if (this.program.commands.length == 0) {
-        this.program.outputHelp();
-      }
-    }
   }
 
   execCmd(cmd) {