cleanSublimeTextProjectHistory.js

#! /usr/local/bin/node
var fs = require("fs");
var strip = require('strip-comments');

var session_file_path;
switch ( process.platform ){
	case "win32" :
	session_file_path = process.env.APPDATA + "/Sublime Text 3/Local/Session.sublime_session";
	break;
	case "darwin" :
	session_file_path = process.env.HOME + "/Library/Application Support/Sublime Text 3/Local/Session.sublime_session";
	break;
	case "linux" :
	session_file_path = process.env.HOME + "/.config/sublime-text/Local/Session.sublime_session";
}

if ( session_file_path ) {

	fs.readFile(session_file_path, "binary", function(err, session_file) {

		if(err) {
			console.log( err + "\n" );
		}
		else{

			session_file = session_file.replace( /\t/g,  '', "g"); // escape tabs

			var
			sublime_session = JSON.parse(session_file),
			cleaned = 0;

	console.log('Checking workspaces.recent_workspaces...');
			sublime_session.workspaces.recent_workspaces = sublime_session.workspaces.recent_workspaces.filter( checkFilePath);

	console.log('Checking projects in workspaces.recent_workspaces...');
			sublime_session.workspaces.recent_workspaces = sublime_session.workspaces.recent_workspaces.filter( checkProjectInWorkspace );

	console.log('Checking new_window_settings.file_history...');
			sublime_session.settings.new_window_settings.file_history = sublime_session.settings.new_window_settings.file_history.filter( checkFilePath );

	console.log('Checking select_project.selected_items...');
			for (var i = 0, wind; i < sublime_session.windows.length; i++) {
				wind = sublime_session.windows[i];
				wind.select_project.selected_items = wind.select_project.selected_items.filter( function(e,s) {
					return checkFilePath(e.pop());
				} );
			}


			function checkProjectInWorkspace (file_path) {


				var
				workspace,
				project_file_path,
				workspace_file = fs.readFileSync(file_path, {encoding: "utf8"});

				if ( workspace_file ){

					workspace_file    = strip(workspace_file.replace( /\t/g,  '', "g")); // escape tabs, strip comments
					workspace         = JSON.parse(workspace_file);
					project_file_path = file_path.substr(0, file_path.lastIndexOf("/")) + "/" + workspace.project;

					if ( workspace.project && !fs.existsSync(project_file_path) ){
						console.log("    Removing '" + project_file_path + "'");

					}else{
						// console.log('Project DOES exist:', project_file_path);
						return true;
					}
				}
				cleaned++;
				return false;
			}

			function checkFilePath(file_path) {

				if ( !fs.existsSync(file_path) ){
					console.log("    Removing '" + file_path + "'");
					cleaned++;
					return false;
				}else {
					return true;
				}
			}


			if ( cleaned > 0 ){

				session_file = JSON.stringify(sublime_session);

				fs.writeFile(session_file_path, session_file, function (err) {
					if (err)
						throw err;
					else
						console.log("Removed " + cleaned + " entries.");
				});
			}else{
				console.log("Nothing to remove.");
			}

		}

	});
} else {
	console.log('please enter the session file path manually for your OS: '+process.platform);
}