Merge pull request #109 from rafmagana/bash_completion

Bash completion

README.markdown

@@ -44,6 +44,40 @@ To set a default Node version to be used in any new shell, use the alias 'defaul
 
     nvm alias default 0.6
 
+## Bash completion
+
+To activate, you need to source `bash_completion`:
+
+  	[[ -r $NVM_DIR/bash_completion ]] && . $NVM_DIR/bash_completion
+
+Put the above sourcing line just below the sourcing line for NVM in your profile (`.bashrc`, `.bash_profile`).
+
+### Usage
+
+nvm
+
+	$ nvm [tab][tab]
+	alias          copy-packages  help           list           run            uninstall      version        
+	clear-cache    deactivate     install        ls             unalias        use
+
+nvm alias
+
+	$ nvm alias [tab][tab]
+	default
+
+	$ nvm alias my_alias [tab][tab]
+	v0.4.11        v0.4.12       v0.6.14
+	
+nvm use
+
+	$ nvm use [tab][tab]
+	my_alias        default        v0.4.11        v0.4.12       v0.6.14
+	
+nvm uninstall
+
+	$ nvm uninstall [tab][tab]
+	my_alias        default        v0.4.11        v0.4.12       v0.6.14
+	
 ## Problems
 
 If you try to install a node version and the installation fails, be sure to delete the node downloads from src (~/nvm/src/) or you might get an error when trying to reinstall them again or you might get an error like the following:

bash_completion

@@ -0,0 +1,82 @@
+#!/usr/bin/env bash
+
+# bash completion for Node Version Manager (NVM)
+
+__nvm_generate_completion()
+{
+  declare current_word
+  current_word="${COMP_WORDS[COMP_CWORD]}"
+  COMPREPLY=($(compgen -W "$1" -- "$current_word"))
+  return 0
+}
+
+__nvm_commands ()
+{
+  declare current_word
+  declare command
+
+  current_word="${COMP_WORDS[COMP_CWORD]}"
+
+  COMMANDS='\
+    help install uninstall use\
+    run ls list deactivate alias\
+    unalias copy-packages clear-cache version'
+
+    if [ ${#COMP_WORDS[@]} == 4 ]; then
+
+      command="${COMP_WORDS[COMP_CWORD-2]}"
+      case "${command}" in
+      alias)  __nvm_installed_nodes ;;
+      esac
+
+    else
+
+      case "${current_word}" in
+      -*)     __nvm_options ;;
+      *)      __nvm_generate_completion "$COMMANDS" ;;
+      esac
+
+    fi
+}
+
+__nvm_options ()
+{
+  OPTIONS=''
+  __nvm_generate_completion "$OPTIONS"
+}
+
+__nvm_installed_nodes ()
+{
+  __nvm_generate_completion "$(nvm_ls) $(__nvm_aliases)"
+}
+
+__nvm_aliases ()
+{
+  declare aliases
+  aliases=""
+  if [ -d $NVM_DIR/alias ]; then
+    aliases="`cd $NVM_DIR/alias && ls`"
+  fi
+  echo "${aliases}"
+}
+
+__nvm_alias ()
+{
+  __nvm_generate_completion "$(__nvm_aliases)"
+}
+
+__nvm ()
+{
+  declare previous_word
+  previous_word="${COMP_WORDS[COMP_CWORD-1]}"
+
+  case "$previous_word" in
+  use|run|ls|list|uninstall) __nvm_installed_nodes ;;
+  alias|unalias)  __nvm_alias ;;
+  *)              __nvm_commands ;;
+  esac
+
+  return 0
+}
+
+complete -o default -o nospace -F __nvm nvm