Class: Ucc::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/ucc.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(compiler) ⇒ Runner

Here we pass the compiler (to be able to choose between gcc or g++)



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# File 'lib/ucc.rb', line 15

def initialize(compiler)
  @compiler = compiler
  raise "Compiler must be specified" unless @compiler
  parse_options
  work
end

Instance Attribute Details

#source_files ⇒ Object (readonly)

Returns the value of attribute source_files.



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# File 'lib/ucc.rb', line 12

def source_files
  @source_files
end

Instance Method Details

#app_filename ⇒ Object

Filename to use when executing compiled app



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# File 'lib/ucc.rb', line 68

def app_filename
  return @app_filename if @app_filename
  @app_filename = source_files[0].sub(/\.\w+$/, '')
  @app_filename += ".exe" if WINDOWS
  @app_filename
end

#enquote(param) ⇒ Object

Enquotes param if needed, also pre-escapes quotes that already are inside the param



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# File 'lib/ucc.rb', line 117

def enquote(param)
  param = param.gsub(/(["'])/, '\\\\\\1')
  param = %Q["#{param}"] if param =~ /\s/
  param
end

#options ⇒ Object

Options array accessor



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# File 'lib/ucc.rb', line 63

def options
  @options ||= {}
end

#optparse ⇒ Object

Defines options for ucc



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# File 'lib/ucc.rb', line 26

def optparse
  @optparse ||= OptionParser.new do |opts|
    opts.banner = "Usage: #{CURRENT_EXECUTABLE} [options] file..."
    
    options[:runopts] = nil
    opts.on( '-r', '--runopts "STRING"', 'Pass STRING as the command line argument to the compiled app' ) do |s|
      options[:runopts] = s
    end
    
    options[:compileopts] = nil
    opts.on( '-c', '--compileopts "STRING"', 'Pass STRING as the command line argument to the compiler' ) do |s|
      options[:compileopts] = s
    end
    
    options[:memcheck] = false
    opts.on( '-V', '--valgrind', 'Run the app in valgrind' ) do
      options[:memcheck] = true
    end
            
    options[:verbose] = false
    opts.on( '--verbose', 'Enable debug messages' ) do
      options[:verbose] = true
    end
    
    opts.on_tail( '-v', '--version', 'Show app version' ) do
      puts "#{CURRENT_EXECUTABLE} #{VERSION}"
      exit
    end
    
    opts.on_tail( '-h', '--help', 'Display this screen' ) do
      puts opts
      exit
    end
  end
end

#parse_options ⇒ Object

Does option parsing using optparse



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# File 'lib/ucc.rb', line 79

def parse_options
  begin
    optparse.parse!
  rescue OptionParser::InvalidOption=> e
    puts "#{CURRENT_EXECUTABLE}: #{e}"
    exit(1)
  end      
  
  # Here we have already parsed ARGV
  @source_files = ARGV
  if @source_files.empty?
    puts "#{CURRENT_EXECUTABLE}: no input files"
    exit(1)
  end
end

#trace(text) ⇒ Object

Prints text if verbose mode is on



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# File 'lib/ucc.rb', line 112

def trace(text)
  puts "[ucc] Debug: #{text}" if options[:verbose]
end

#work ⇒ Object

Everything special goes here



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# File 'lib/ucc.rb', line 96

def work
  compilation_params = %Q[#{@compiler} -Wall -o "#{app_filename}" #{source_files.map{ |f| enquote(f) }.join(" ")}]
  compilation_params = "#{compilation_params} #{options[:compileopts]}" if options[:compileopts]
  trace compilation_params
  exit unless system compilation_params
  
  exec_params = enquote(app_filename)
  exec_params = "./#{exec_params}" unless WINDOWS
  exec_params = "#{exec_params} #{options[:runopts]}" if options[:runopts]
  exec_params = "valgrind #{exec_params}" if options[:memcheck]
  trace exec_params
  puts "=== Compiled successfully, executing... === "
  exec exec_params
end