Class: IndentCode::Application

Inherits:
Object
  • Object
show all
Includes:
IndentCode
Defined in:
lib/indent_code/application.rb

Overview

Class for application control methods.

Constant Summary

Constants included from IndentCode

VERSION

Instance Method Summary collapse

Methods included from IndentCode

error

Constructor Details

#initialize ⇒ Application

Returns a new instance of Application.



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# File 'lib/indent_code/application.rb', line 9

def initialize
  # parse command line options.
  parser = OptionParser.new do |opts|
    opts.banner = "Usage: indent file [options]"

    opts.on('-i', '--indent size', 'Set indent size (TAB size): --indent 4.') do |size|
      @@options[:tab] = size.to_i;
    end
    opts.on('-c', '--clean', 'Delete code blocks from source code is framed as: #if 0 ... #endif.') do
      @@options[:clean] = true;
    end
	opts.on('-d', '--delete', 'Delete temporary files after work: ...~ and ...~~ files.') do
      @@options[:delete] = true;
    end
	opts.on('-V', '--version', 'Display the program version.') do
      puts "indent, version #{IndentCode::VERSION}"
      exit
    end
    opts.on('-h', '--help', 'Displays Help') do
      puts opts
      exit
    end
  end
  parser.parse!

  # check command line arguments.
  if ARGV.size == 0 then
    IndentCode.error 'no input file, run with option -h or --help'
  end
  if !File.file?( ARGV[0] ) then
    IndentCode.error 'unable to open file ' + ARGV[0]
  end
  exit if File.size( ARGV[0] ) == 0
end

Instance Method Details

#run ⇒ Object

start indent handling.



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# File 'lib/indent_code/application.rb', line 46

def run
  # create source file copy for backup.
  FileUtils.copy( ARGV[0], ARGV[0] + ?~ )

  parser = nil
  # create indent parser.
  case @@options[:lang]
  when 'cpp'
    parser = IndentCPP.new
  else
	IndentCode.error 'unknown options - ' + @@options[:lang]
  end

  f = File.new( ARGV[0], 'w' )
  # parse input file.
  File.open( ARGV[0] + ?~, 'r' ).each do |line|
    @@context[:linetxt] = line.strip
    indent = @@context[:indent]

    # parse each char from string.
    line.each_char do |c|
      IndentCode.error() if !parser.indent( c )
    end

    indent = @@context[:indent] if @@context[:indent] < indent
    spaces = ' ' * indent

    f.puts spaces + @@context[:linetxt]
    @@context[:linenum] = @@context[:linenum] + 1
  end
  f.close

  # clean source code.
  if @@options[:clean] then
	# create source file copy for backup.
    FileUtils.copy( ARGV[0], ARGV[0] + '~~' )
	
	cleaner = IndentCode::Cleaner.new	
	@@context[:indent] = ''
	
	f = File.new( ARGV[0], 'w' )
	# parse input file.
	File.open( ARGV[0] + '~~', 'r' ).each do |line|
	  @@context[:linetxt] = line
	  
	  # parse each char from string.
	  line.each_char do |c|
 IndentCode.error() if !cleaner.clean( c )
	  end
	  
	  # check result of paring.
	  case @@context[:indent]
	  when ''
 f.print @@context[:linetxt]
	  when 'lock'
	  when 'unlock'
 @@context[:indent] = ''
	  end
	  
	  @@context[:linenum] = @@context[:linenum] + 1
	end
	f.close
  end
  
  
  # delete temporary files.
  if @@options[:delete] then
	FileUtils.remove( ARGV[0] + '~' )
	FileUtils.remove( ARGV[0] + '~~' )
  end
end