prefsCleaner.sh (for Linux/Mac)

prefsCleaner.sh

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+#!/usr/bin/env bash
+
+## prefs.js cleaner for Linux/Mac
+## author: @claustromaniac
+## version: 1.0b5
+
+## special thanks to @overdodactyl and @earthlng for a few snippets that I stol..*cough* borrowed from the updater.sh
+
+set -eu
+currdir=$(pwd)
+
+## get the full path of this script (readlink for Linux, greadlink for Mac with coreutils installed)
+sfp=$(readlink -f "${BASH_SOURCE[0]}" 2>/dev/null || greadlink -f "${BASH_SOURCE[0]}" 2>/dev/null)
+
+## fallback for Macs without coreutils
+if [ -z "$sfp" ]; then sfp=${BASH_SOURCE[0]}; fi
+
+## change directory to the Firefox profile directory
+cd "$(dirname "${sfp}")"
+
+fQuit() {
+  ## change directory back to the original working directory
+  cd "${currdir}"
+  exit $1
+}
+
+fFF_check() {
+  # there are many ways to see if firefox is running or not, some more reliable than others
+  # this isn't elegant and might not be future-proof but should at least be compatible with any environment
+  while [ -e webappsstore.sqlite-shm ]
+  do
+    echo -e "\nThis Firefox profile seems to be in use. Close Firefox and try again.\n"
+    read -p "Press any key to continue."
+  done
+}
+
+fClean() {
+  # the magic happens here
+  prefs="@@"
+  prefexp="user_pref[ 	]*\([ 	]*[\"']([^\"']*)[\"'][ 	]*,"
+  while read -r line || [[ -n "$line" ]]; do
+    if [[ $line =~ $prefexp ]]; then
+      if [[ $prefs != *"@@${BASH_REMATCH[1]}@@"* ]]; then
+        prefs="${prefs}${BASH_REMATCH[1]}@@"
+      fi
+    fi
+  done <<< `grep -E "${prefexp}" user.js`
+
+  while IFS='' read -r line || [[ -n "$line" ]]; do
+    if [[ $line =~ $prefexp ]]; then
+      if [[ $prefs != *"@@${BASH_REMATCH[1]}@@"* ]]; then
+        echo "$line"
+      fi
+      continue
+    fi
+    echo "$line"
+  done < "$1" > prefs.js
+}
+
+echo -e "\n\n"
+echo "                   ╔══════════════════════════╗"
+echo "                   ║     prefs.js cleaner     ║"
+echo "                   ║    by claustromaniac     ║"
+echo "                   ║          v1.0b5          ║"
+echo "                   ╚══════════════════════════╝"
+echo -e "\nThis script should be run from your Firefox profile directory.\n"
+echo "It will remove any entries from prefs.js that also exist in user.js."
+echo "This will allow inactive preferences to be reset to their default values."
+echo -e "\nThis Firefox profile shouldn't be in use during the process.\n"
+select option in Start Help Exit;
+do
+  case $option in
+    Start)
+      if [ ! -e user.js ]; then
+        echo "user.js not found in the current directory."
+        fQuit 1
+      elif [ ! -e prefs.js ]; then
+        echo "prefs.js not found in the current directory."
+        fQuit 1
+      fi
+
+      fFF_check
+      ## create backup folder if it doesn't exist
+      mkdir -p userjs_backups;
+      bakfile="userjs_backups/prefs.js.backup.$(date +"%Y-%m-%d_%H%M")"
+      mv prefs.js "${bakfile}" && echo -e "\nprefs.js backed up: $bakfile"
+      echo "Cleaning prefs.js..."
+      fClean "$bakfile"
+      echo "All done!"
+      fQuit 0
+      ;;
+    Help)
+      echo -e "\nThis script creates a backup of your prefs.js file before doing anything."
+      echo -e "It should be safe, but you can follow these steps if something goes wrong:\n"
+      echo "1. Make sure Firefox is closed."
+      echo "2. Delete prefs.js in your profile folder."
+      echo "3. Delete Invalidprefs.js if you have one in the same folder."
+      echo "4. Rename or copy your latest backup to prefs.js."
+      echo "5. Run Firefox and see if you notice anything wrong with it."
+      echo "6. If you do notice something wrong, especially with your extensions, and/or with the UI, go to about:support, and restart Firefox with add-ons disabled. Then, restart it again normally, and see if the problems were solved."
+      echo -e "If you are able to identify the cause of your issues, please bring it up on ghacks-user.js GitHub repository.\n"
+      ;;
+    Exit)
+      fQuit 0
+      ;;
+  esac
+done