lib/taskjuggler/Tj3AppBase.rb in taskjuggler-0.0.11 vs lib/taskjuggler/Tj3AppBase.rb in taskjuggler-0.1.0

@@ -18,10 +18,13 @@
 require 'taskjuggler/TjTime'
 require 'taskjuggler/TextFormatter'
 
 class TaskJuggler
 
+  class TjRuntimeError < RuntimeError
+  end
+
   class Tj3AppBase
 
     def initialize
       # Indent and width of options. The deriving class may has to change
       # this.
@@ -29,10 +32,11 @@
       @optsSummaryIndent = 5
       # Show some progress information by default
       @silent = false
       @configFile = nil
       @mandatoryArgs = ''
+      @mininumRubyVersion = '1.9.2'
     end
 
     def processArguments(argv)
       @opts = OptionParser.new
       @opts.summary_width = @optsSummaryWidth
@@ -81,41 +85,60 @@
 
       files
     end
 
     def main(argv = ARGV)
+      if Gem::Version.new(RUBY_VERSION.dup) <
+         Gem::Version.new(@mininumRubyVersion)
+        error('This program requires at least Ruby version ' +
+              "#{@mininumRubyVersion}!")
+      end
+
       # Install signal handler to exit gracefully on CTRL-C.
       intHandler = Kernel.trap('INT') do
-        error("\nAborting on user request!")
+        error("Aborting on user request!")
       end
 
-      args = processArguments(argv)
+      begin
+        args = processArguments(argv)
 
-      # If DEBUG mode has been enabled, we restore the INT trap handler again
-      # to get Ruby backtrackes.
-      Kernel.trap('INT', intHandler) if $DEBUG
+        # If DEBUG mode has been enabled, we restore the INT trap handler again
+        # to get Ruby backtrackes.
+        Kernel.trap('INT', intHandler) if $DEBUG
 
-      unless @silent
-        puts "#{AppConfig.softwareName} v#{AppConfig.version} - " +
-             "#{AppConfig.packageInfo}\n\n" +
-             "Copyright (c) #{AppConfig.copyright.join(', ')}\n" +
-             "              by #{AppConfig.authors.join(', ')}\n\n" +
-             "#{AppConfig.license}\n"
-      end
+        unless @silent
+          puts "#{AppConfig.softwareName} v#{AppConfig.version} - " +
+               "#{AppConfig.packageInfo}\n\n" +
+               "Copyright (c) #{AppConfig.copyright.join(', ')}\n" +
+               "              by #{AppConfig.authors.join(', ')}\n\n" +
+               "#{AppConfig.license}\n"
+        end
 
-      @rc = RuntimeConfig.new(AppConfig.packageName, @configFile)
+        @rc = RuntimeConfig.new(AppConfig.packageName, @configFile)
 
-      args
+        appMain(args)
+      rescue Exception => e
+        if e.is_a?(SystemExit) || e.is_a?(Interrupt)
+          # Don't show backtrace on user interrupt unless we are in debug mode.
+          $stderr.puts e.backtrace.join("\n") if $DEBUG
+          1
+        else
+          error("Ups, you have triggered a bug in #{AppConfig.softwareName}!\n" +
+                "#{e}\n" +
+                e.backtrace.join("\n") +
+                "Please see the user manual on how to get this bug fixed!")
+        end
+      end
     end
 
     private
 
     def quit
       exit 0
     end
 
     def error(message, exitVal = 1)
-      $stderr.puts "ERROR: #{message}"
+      $stderr.puts "\nERROR: #{message}"
       exit exitVal
     end
 
     def format(str, indent = nil)
       indent = @optsSummaryWidth + @optsSummaryIndent + 1 unless indent