Allow for offline usage and always update if not offline

Author: rtfpessoa

lib/dependency_spy.rb

@@ -28,9 +28,12 @@
 module DependencySpy
   class API
 
-    def self.check(path = Dir.pwd, files = nil, platform = nil, database_path = YAVDB::Constants::DEFAULT_YAVDB_DATABASE_PATH)
-      unless File.exist?(database_path)
-        puts 'Could not find local vulnerability database, going to download the database.'
+    def self.check(path = Dir.pwd, files = nil, platform = nil, database_path = YAVDB::Constants::DEFAULT_YAVDB_DATABASE_PATH, offline = false)
+      if !File.exist?(database_path) && offline
+        puts 'No local database found. Cannot obtain database since offline mode is enabled.'
+        exit(10)
+      elsif !offline
+        puts 'Going to update the local vulnerability database.'
         YAVDB::API.download_database(false, YAVDB::Constants::DEFAULT_YAVDB_PATH)
       end
 

lib/dependency_spy/cli.rb

@@ -45,9 +45,10 @@ class CLI < Thor
     method_option('platform', :aliases => :m, :type => :string, :enum => YAVDB::Constants::POSSIBLE_PACKAGE_MANAGERS.map(&:downcase))
     method_option('output-path', :aliases => :o, :type => :string)
     method_option('database-path', :type => :string, :aliases => :p, :default => YAVDB::Constants::DEFAULT_YAVDB_DATABASE_PATH)
+    method_option('offline', :type => :boolean, :default => false)
 
     def check
-      manifests = API.check(options['path'], options['files'], options['platform'], options['database-path'])
+      manifests = API.check(options['path'], options['files'], options['platform'], options['database-path'], options['offline'])
 
       formatted_output =
         FORMATTERS