feat(): Begin tab completion with omelette

completions/_completion_template

@@ -0,0 +1,47 @@
+[[ "$1" != "" ]] || {
+  echo "Usage: source _completion_template <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") )
+
+      # 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
+}

pm

@@ -1,6 +1,7 @@
 #!/usr/bin/env node
 
 const path = require('path');
+const omelette = require('omelette');
 const { Command } = require('commander');
 const program = new Command();
 
@@ -9,10 +10,12 @@ const program = new Command();
 // When `.command()` is invoked with a description argument,
 // this tells Commander that you're going to use a stand-alone executable for the subcommand.
 //
-// Only `install` and `list` are implemented, see pm-install and pm-list.js
+// See files pm-install, pm-search, pm-list and myUpdateSubCommand
+
+scriptName = path.parse(process.argv[1]).base;
 
 program
-  .name(path.parse(process.argv[1]).base)
+  .name(scriptName)
   .version('0.0.1')
   .description('Fake package manager')
   .command('install [name]', 'install one or more packages')
@@ -24,8 +27,26 @@ program
   })
   .command('list', 'list packages installed', { isDefault: false });
 
+// function description for bash-completion
+omelette(scriptName).tree({
+  install: ['name'],
+  search: ['query'],
+  update: [],
+  list: []
+}).init()
+
 program.parse();
 
+// // If you want to have a setup feature, you can use `omeletteInstance.setupShellInitFile()` function.
+// if (~process.argv.indexOf('--setup')) {
+//   omelette.completion.setupShellInitFile()
+// }
+
+// // Similarly, if you want to tear down autocompletion, use `omeletteInstance.cleanupShellInitFile()`
+// if (~process.argv.indexOf('--cleanup')) {
+//   omelette.completion.cleanupShellInitFile()
+// }
+
 // Try the following on macOS or Linux:
 //    ./examples/pm
 //

pm-install

@@ -9,8 +9,10 @@ const errorColor = (str) => {
   return `\x1b[31m${str}\x1b[0m`;
 }
 
+scriptName = path.parse(process.argv[1]).base;
+
 program
-  .name(path.parse(process.argv[1]).base)
+  .name(scriptName)
   .version('0.0.1')
   .description('Install package with fake package manager')
   .usage("-n 3 32 -l x y z -- op")

pm-list

@@ -1,11 +1,42 @@
 #!/usr/bin/env node
 
+const fs = require('fs');
 const path = require('path');
+const omelette = require('omelette');
 const { Command } = require('commander');
 const program = new Command();
 
+scriptName = path.parse(process.argv[1]).base;
+
 program
-  .name(path.parse(process.argv[1]).base)
+  .name(scriptName)
   .version('0.0.1')
-  .description('List packages of fake package manager')
-  .outputHelp();
+  .description('List packages of fake package manager');
+
+
+// Write the CLI template.
+const completion = omelette(`${scriptName} <actions> <user>`);
+
+// Define new actions completion
+completion.on('actions', ({ reply }) => {
+  reply(['firstCommand'])
+})
+
+completion.on('user', ({ reply }) => {
+  reply(fs.readdirSync('/Users/'))
+})
+
+program
+  .command('firstCommand')
+  .description('This is our first command')
+  .action(() => {
+    console.log('Fancy stuff happens here');
+  })
+
+// Initialize the omelette and parse args
+completion.init()
+program.parse();
+
+if (!Object.keys(program.opts()).length && !program.args.length) {
+  program.outputHelp();
+}

pm-search

@@ -1,11 +1,24 @@
 #!/usr/bin/env node
 
 const path = require('path');
+const omelette = require('omelette');
 const { Command } = require('commander');
 const program = new Command();
 
+scriptName = path.parse(process.argv[1]).base;
+
 program
-  .name(path.parse(process.argv[1]).base)
+  .name(scriptName)
   .version('0.0.1')
-  .description('Search packages of fake package manager')
-  .outputHelp();
+  .description('Search packages of fake package manager');
+
+// Write the CLI template.
+const completion = omelette(`${scriptName}`);
+
+// Initialize the omelette and parse args
+completion.init()
+program.parse();
+
+if (!Object.keys(program.opts()).length && !program.args.length) {
+  program.outputHelp();
+}