Listing: regexp_tester.rb (original) (raw)

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#!/usr/bin/qtrubyinit require 'regexp_tester_ui.rb' require 'aboutdialog_ui.rb' PROGNAME = "RegExpTester" PROGVER = "0.1" PROGTITLE = "#{PROGNAME} #{PROGVER}" =begin The Configuration class defines program values to be preserved in a configuration file. =end class Configuration attr_accessor :dataFile attr_accessor :dataPath attr_accessor :search attr_accessor :replace attr_accessor :global attr_accessor :case attr_accessor :extended attr_accessor :multiline def initialize @dataFile = "" @dataPath = ENV["HOME"] @search = "" @replace = "" @global = true @case = false @extended = false @multiline = false end end =begin The ConfigurationHandler class reads and writes the program configuration file and populates a Configuration class instance =end class ConfigurationHandler def initialize(conf,progName) @conf = conf @progName = progName @confPath = File.join(ENV["HOME"], "." + @progName) @iniPath = @confPath + "/" + @progName + ".ini" Dir.mkdir(@confPath) unless FileTest.exists?(@confPath) end def writeConfig file = File.new(@iniPath,"w") unless file.nil? @conf.instance_variables.sort.each { |x| xi = @conf.instance_variable_get(x) # escape strings if(xi.class == String) xi.gsub!(/\/,"\\\\") xi.gsub!(/"/,"\"") xi = ""#{xi}"" end file.write("#{x}=#{xi}\n") } file.close() end end def readConfig if FileTest.exists?(@iniPath) file = File.new(@iniPath,"r") file.each { |line| @conf.instance_eval(line) } file.close() end end end =begin AboutDialog subclasses AboutDialogUI (see below for more explanation) =end class AboutDialog < AboutDialogUI def initialize super setCaption("About #{PROGNAME}") @groupBox3.setTitle( "#{PROGTITLE}" ) @textLabel2.setText("#{PROGNAME} is (c) Copyright 2006, P. Lutus. All rights reserved. This program is released under the GPL." ) end def closeButton_clicked(*k) self.close() end end =begin — description of files and classes -- regexp_tester.ui: user interface created by qtdesigner or kdevdesigner (basically the same program) regexp_tester_ui.rb: created using "rbuic" out of regexp_tester.ui, defines RegExpTesterUI class, which implements a Qt user interface in Ruby regexp_tester.rb: defines RegexpTester and several other classes RegExpTester subclasses RegExpTesterUI and provides the code body for the user interface =end class RegExpTester < RegExpTesterUI def initialize(app) super() @app = app # handle configuration issues @conf = Configuration.new @confHandler = ConfigurationHandler.new(@conf,PROGNAME) # read configuration file @confHandler.readConfig() # set checkbox values from configuration @globalCheckBox.setChecked(@conf.global) @caseCheckBox.setChecked(@conf.case) @extendedCheckBox.setChecked(@conf.extended) @multilineCheckBox.setChecked(@conf.multiline) @textInput.setText(@conf.search) @regexSearch.setText(@conf.search) @regexReplace.setText(@conf.replace) @title = PROGTITLE setCaption(@title) # load any prior data file load(@conf.dataFile) if @conf.dataFile.size > 0 end

"choose" selects a data file

def choose() fd = Qt::FileDialog.new fn = fd.getOpenFileName(@conf.dataPath, nil, self) if !fn.nil? load( fn ) # preserve user selected path @conf.dataFile = fn @conf.dataPath = File.dirname(fn) setCaption( @title + ": " + fn ) else statusBar().message( tr("Loading aborted"), 5000 ) end end

"load" reads a chosen data file

def load( filename ) f = Qt::File.new( filename ) if !f.open( Qt::IO_ReadOnly ) return end ts = Qt::TextStream.new( f ) @textInput.setText( ts.read() ) @textInput.setModified( false ) statusBar().message( tr("Loaded document %s" % filename), 5000 ) end

user action for "choose" (select a file)

def fileReadAction_activated(*k) choose() end

user action for about dialog

def fileAbout_activated(*k) ad = AboutDialog.new ad.show end

carry out regular expression processing

def regexExecute(*k) # get data into local variables data = @textInput.text() search = @regexSearch.text() replace = @regexReplace.text() # convert newline and tab escapes # in replace string replace.gsub!(/\n/,"\n") replace.gsub!(/\t/,"\t") # process options options = 0 options |= Regexp::IGNORECASE unless @caseCheckBox.isChecked() options |= Regexp::EXTENDED if @extendedCheckBox.isChecked() options |= Regexp::MULTILINE if @multilineCheckBox.isChecked() # create regular expression rs = Regexp.new(search,options) # perform search & replace if (@globalCheckBox.isChecked()) data.gsub!(rs,replace) else data.sub!(rs,replace) end # assign result data @textOutput.setText(data) end

def regexReplace_returnPressed(*k) regexExecute() end def regexSearch_returnPressed(*k) regexExecute() end

override handling of "close" signal from both

def close(x) # set configuration from checkbox values @conf.global = @globalCheckBox.isChecked() @conf.case = @caseCheckBox.isChecked() @conf.extended = @extendedCheckBox.isChecked() @conf.multiline = @multilineCheckBox.isChecked() @conf.search = @regexSearch.text() @conf.replace = @regexReplace.text() # write configuration file @confHandler.writeConfig() @app.exit(0) end

user action for "close"

def exitAction_activated(*k) close(false) end end

launch Qt application

if $0 == FILE app = Qt::Application.new(ARGV) w = RegExpTester.new(app) app.mainWidget = w w.show app.exec end