helpers: Add new bash-it profile subcommand

lib/helpers.bash

@@ -108,6 +108,7 @@ bash-it ()
     example '$ bash-it version'
     example '$ bash-it reload'
     example '$ bash-it restart'
+    example '$ bash-it profile save|load my_profile'
     example '$ bash-it doctor errors|warnings|all'
     typeset verb=${1:-}
     shift
@@ -126,6 +127,8 @@ bash-it ()
         func=_help-$component;;
       doctor)
         func=_bash-it-doctor-$component;;
+      profile)
+        func=_bash-it-profile-$component;;
       search)
         _bash-it-search $component "$@"
         return;;
@@ -457,6 +460,124 @@ _bash-it-doctor-() {
   _bash-it-doctor-all
 }
 
+_bash-it-profile-save() {
+  _about 'saves the current configuration to the "profile" directory'
+  _group 'lib'
+
+  local name=$1
+  while [ -z "$1" ]; do
+    read -r -e -p "Please enter the name of the profile to save: " name
+    case $name in
+      "")
+        echo -e "\033[91mPlease choose a name.\033[m"
+        ;;
+      *)
+        break
+        ;;
+    esac
+  done
+
+  local profile_path="${BASH_IT}/profiles/${name}.bash_it"
+  if [ -f "$profile_path" ]; then
+    echo -e "\033[0;33mProfile \"$name\" already exists.\033[m"
+    while true; do
+      read -r -e -n 1 -p "Would you like to overwrite existing profile? [y/N] " RESP
+      case $RESP in
+        [yY])
+          echo -e "\033[0;32mOverwriting profile \"$name\"...\033[m"
+          rm "$profile_path"
+          break
+          ;;
+        [nN] | "")
+          echo -e "\033[91mAborting profile save...\033[m"
+          return 1
+          ;;
+        *)
+          echo -e "\033[91mPlease choose y or n.\033[m"
+          ;;
+      esac
+    done
+  fi
+
+  echo "# This file is auto generated by Bash-it. Do not edit manually!" > "$profile_path"
+  for subdirectory in "plugins" "completion" "aliases"; do
+    echo "Saving $subdirectory configuration..."
+    echo "" >> "$profile_path"
+    echo "# $subdirectory" >> "$profile_path"
+    for f in "${BASH_IT}/$subdirectory/available/"*.bash; do
+      _bash-it-process-component "$f"
+      if [ "$enabled" == "x" ]; then
+        echo "$subdirectory $enabled_file_clean" >> "$profile_path"
+      fi
+    done
+  done
+  echo "All done!"
+  echo ""
+  echo "Profile location: $profile_path"
+  echo "Load the profile by invoking \"bash-it profile load $name\""
+}
+
+_bash-it-profile-load-parse-profile() {
+  _about 'Internal function used to parse the profile file'
+  _param '1: path to the profile file'
+  _param '2: dry run- only check integrity of the profile file'
+  _example '$ _bash-it-profile-load-parse-profile "profile.bash_it" "dry"'
+
+  local num=0
+  while read -r -a line; do
+    num=$((num + 1))
+    # Ignore comments and empty lines
+    [[ -z "${line[*]}" || "${line[*]}" =~ ^#.* ]] && continue
+    local enable_func="_enable-${line[0]}"
+    local subdirectory=${line[0]}
+    local component=${line[1]}
+
+    typeset to_enable=$(command ls "${BASH_IT}/$subdirectory/available/$component".*bash 2>/dev/null | head -1)
+    # Ignore botched lines
+    if [[ -z "$to_enable" ]]; then
+      echo -e "\033[91mBad line(#$num) in profile, aborting load...\033[m"
+      local bad="bad line"
+      break
+    fi
+    # Do not actually modify config on dry run
+    [[ -z $2 ]] || continue
+    # Actually enable the component
+    $enable_func "$component"
+  done < "$1"
+
+  # Make sure to propagate the error
+  [[ -z $bad ]]
+}
+
+_bash-it-profile-load() {
+  _about 'loads a configuration from the "profile" directory'
+  _group 'lib'
+
+  local name="$1"
+  if [[ -z $name ]]; then
+    echo -e "\033[91mPlease specify profile name to load, not changing configuration...\033"
+    return 1
+  fi
+
+  local profile_path="${BASH_IT}/profiles/$name.bash_it"
+  if [[ ! -f "$profile_path" ]]; then
+    echo -e "\033[91mCould not find profile \"$name\", not changing configuration...\033"
+    return 1
+  fi
+
+  echo "Trying to parse profile \"$name\"..."
+  if _bash-it-profile-load-parse-profile "$profile_path" "dry"; then
+    echo "Profile \"$name\" parsed successfully!"
+    echo "Disabling current configuration..."
+    _disable-all
+    echo ""
+    echo "Enabling configuration based on profile..."
+    _bash-it-profile-load-parse-profile "$profile_path"
+    echo ""
+    echo "Profile \"$name\" enabled!"
+  fi
+}
+
 _bash-it-restart() {
   _about 'restarts the shell in order to fully reload it'
   _group 'lib'
@@ -550,6 +671,17 @@ _on-disable-callback()
     _command_exists $callback && $callback
 }
 
+_disable-all ()
+{
+    _about 'disables all bash_it components'
+    _example '$ _disable-all'
+    _group 'lib'
+
+    _disable-plugin "all"
+    _disable-alias "all"
+    _disable-completion "all"
+}
+
 _disable-plugin ()
 {
     _about 'disables bash_it plugin'