Class: Redcar::FilterCommand::CommandParser

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

Overview

Finds, evaluates and replaces supported Redcar environment variables in shell commands

Class Method Summary collapse

Class Method Details

.substitute_variables(doc, command) ⇒ Object

Sets and inserts supported variables into the shell command enviroment and replaces shortened substitution characters. Supported variables require that an editable tab is focussed for substitution to occur.

Parameters:

  • doc (Redcar::Document) —

    a document for use in the current command

  • command (String) —

    the command to be executed



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# File 'lib/filter_command/command_parser.rb', line 18

def self.substitute_variables doc, command
  output = {}
  ENV['REDCAR_SELECTION'] = doc.selection? ? doc.selected_text : doc.get_line_without_end_of_line(doc.cursor_line)
  ENV['REDCAR_DOCUMENT'] = doc.get_all_text
  ENV['REDCAR_WORD'] = doc.current_word
  ENV['REDCAR_LINE'] = doc.get_line_without_end_of_line(doc.cursor_line)
  ENV['REDCAR_SCOPE'] = doc.cursor_scope
  supported_variables.each do |var|
    unless ENV['REDCAR_'+var].nil?
      var_alias = var == 'SCOPE' ? '#c' : /(##{var.downcase.split(//).first})(\W|\z)/
      var_env = to_env(var,Redcar.platform)
      command = command.gsub(var,var_env).gsub(var_alias,"#{var_env}\\2")
    end
  end
  if doc.mirror and doc.mirror.respond_to?(:path) and path = doc.mirror.path
    path = "\\\\\"#{path}\\\\\""
    command = command.gsub('FILE_PATH',path).gsub(/(#f)(\W|\z)/,"#{path}\\2")
  end
  if command.include?('TEMP') or command =~ /(#t)(\W|\z)/
    temp = java.io.File.create_temp_file("tempfile",".txt")
    temp.delete_on_exit
    path = temp.get_absolute_path
    output['temp'] = path
    path = "\\\\\"#{path}\\\\\""
    command = command.gsub('TEMP',path).gsub(/(#t)(\W|\z)/,path)
  end
  output['command'] = command
  output
end

.supported_variables ⇒ Object

A list of supported variables



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# File 'lib/filter_command/command_parser.rb', line 9

def self.supported_variables
  ['SELECTION','DOCUMENT','WORD','LINE','SCOPE']
end

.to_env(variable, platform) ⇒ Object

Proper escaping for environment variables (platform-specific)



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# File 'lib/filter_command/command_parser.rb', line 49

def self.to_env variable, platform
  case platform
  when :windows
    return "%REDCAR_#{variable}%"
  when :linux,:osx
    return "\\\\\"$REDCAR_#{variable}\\\\\""
  end
end