Class: Glark::AppOptions

Inherits:
AppSpec show all
Includes:
OptionUtil
Defined in:
lib/glark/app/options.rb

Constant Summary

Constants included from OptionUtil

OptionUtil::NONE

Instance Attribute Summary collapse

Attributes inherited from AppSpec

#input_spec, #local_config_files, #match_spec, #output_spec

Instance Method Summary collapse

Methods included from OptionUtil

#add_opt, #add_opt_arg, #add_opt_blk, #add_opt_false, #add_opt_int, #add_opt_str, #add_opt_true, #colorize, #set, #set_var, #to_boolean

Constructor Details

#initialize ⇒ AppOptions

Returns a new instance of AppOptions.



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# File 'lib/glark/app/options.rb', line 40

def initialize
  optdata = Array.new

  @colors = ColorOptions.new    

  @input_options = InputOptions.new optdata
  @match_options = MatchOptions.new @colors, optdata
  @output_options = OutputOptions.new @colors, optdata

  @info_options = InfoOptions.new @colors, optdata

  add_opt_blk(optdata, %w{ --config }) { write_configuration; exit }
  add_opt_blk(optdata, %w{ --dump }) { dump_all_fields; exit 0 }

  super @input_options, @match_options, @output_options
  
  @optset = OptionSet.new optdata
end

Instance Attribute Details

#colors ⇒ Object (readonly)

Returns the value of attribute colors.



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# File 'lib/glark/app/options.rb', line 35

def colors
  @colors
end

#fileset ⇒ Object (readonly)

Returns the value of attribute fileset.



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# File 'lib/glark/app/options.rb', line 36

def fileset
  @fileset
end

#info_options ⇒ Object (readonly)

Returns the value of attribute info_options.



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# File 'lib/glark/app/options.rb', line 37

def info_options
  @info_options
end

#output_options ⇒ Object (readonly)

Returns the value of attribute output_options.



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# File 'lib/glark/app/options.rb', line 38

def output_options
  @output_options
end

Instance Method Details

#all_option_sets ⇒ Object 



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# File 'lib/glark/app/options.rb', line 109

def all_option_sets
  [ @colors, @match_options, @output_options, @info_options, @input_options ]
end

#config_fields ⇒ Object 



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# File 'lib/glark/app/options.rb', line 125

def config_fields
  {
    "local-config-files" => @local_config_files,
  }
end

#dump_all_fields ⇒ Object 



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# File 'lib/glark/app/options.rb', line 197

def dump_all_fields
  fields = dump_fields
  all_option_sets.each do |opts|
    fields.merge! opts.dump_fields
  end

  len = fields.keys.collect { |f| f.length }.max
  
  fields.keys.sort.each do |field|
    printf "%*s : %s\n", len, field, fields[field]
  end
end

#dump_fields ⇒ Object 



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# File 'lib/glark/app/options.rb', line 131

def dump_fields
  config_fields
end

#one_file? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/glark/app/options.rb', line 86

def one_file?
  return false if @fileset.size > 1
  first = @fileset.files.first
  first.to_s != '-' && first.file?
end

#read_environment_variable ⇒ Object 



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# File 'lib/glark/app/options.rb', line 144

def read_environment_variable
  options = Env.split "GLARKOPTS"
  while options.size > 0
    @optset.process_option options
  end
end

#read_expression ⇒ Object 



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# File 'lib/glark/app/options.rb', line 151

def read_expression
  if @args.size > 0
    known_end = false
    if @args[0] == "--"
      @args.shift
      known_end = true
    end
    
    if @args && @args.size > 0
      return @match_options.read_expression @args, !known_end
    end
  end
  
  if @args.size > 0
    raise "No expression provided."
  end
  
  $stderr.puts "Usage: glark [options] expression file..."
  $stderr.puts "Try `glark --help' for more information."
  exit 1
end

#read_home_rcfile ⇒ Object 



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# File 'lib/glark/app/options.rb', line 92

def read_home_rcfile
  return unless hdir = Dir.home
  hdpn = Pathname.new hdir
  homerc = hdpn + '.glarkrc'
  read_rcfile homerc
end

#read_local_rcfiles ⇒ Object 



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# File 'lib/glark/app/options.rb', line 99

def read_local_rcfiles
  hdir = Dir.home
  dir = Pathname.new('.').expand_path
  while !dir.root? && dir != hdir
    rcfile = dir + '.glarkrc'
    return if read_rcfile rcfile
    dir = dir.dirname
  end
end

#read_options ⇒ Object 



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# File 'lib/glark/app/options.rb', line 173

def read_options
  # solitary "-v" means "--version", not --invert-match
  @info_options.show_version if @args.size == 1 && @args.first == "-v"
  
  @match_options.expr = nil

  @optset.process(@args)

  unless @match_options.expr
    read_expression
  end
end

#read_rcfile(rcfname) ⇒ Object 



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# File 'lib/glark/app/options.rb', line 113

def read_rcfile rcfname
  return nil unless rcfname.exist?
  rcfile = RCFile.new rcfname
  rcvalues = rcfile.names.collect { |name| [ name, rcfile.values(name) ] }

  all_option_sets.each do |opts|
    opts.update_fields rcvalues
  end
  update_fields rcvalues
  true
end

#run(args) ⇒ Object 



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# File 'lib/glark/app/options.rb', line 59

def run args
  @args = args

  read_home_rcfile

  if @local_config_files
    read_local_rcfiles
  end

  read_environment_variable

  # honor thy EMACS; go to grep mode
  if ENV["EMACS"]
    @output_options.style = "grep"
  end

  read_options

  validate!

  @fileset = @input_options.create_fileset @args

  if @output_options.show_file_names.nil?
    @output_options.show_file_names = @output_options.label || !one_file?
  end
end

#update_fields(fields) ⇒ Object 



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# File 'lib/glark/app/options.rb', line 135

def update_fields fields
  fields.each do |name, values|
    case name
    when "local-config-files"
      @local_config_files = to_boolean values.last
    end
  end
end

#validate! ⇒ Object

check options for collisions/data validity



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# File 'lib/glark/app/options.rb', line 211

def validate!
  @input_options.range.validate!
end

#write_configuration ⇒ Object 



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# File 'lib/glark/app/options.rb', line 186

def write_configuration
  fields = config_fields
  all_option_sets.each do |opts|
    fields.merge! opts.config_fields
  end
  
  fields.keys.sort.each do |fname|
    puts "#{fname}: #{fields[fname]}"
  end
end