Class: Morpheus::Cli::DotFile

Inherits:
Object
  • Object
show all
Includes:
Term::ANSIColor
Defined in:
lib/morpheus/cli/dot_file.rb

Constant Summary collapse

EXPORTED_ALIASES_HEADER = 
"# exported aliases"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(fn) ⇒ DotFile

attr_reader :file_contents attr_reader :commands attr_reader :cmd_results



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# File 'lib/morpheus/cli/dot_file.rb', line 29

def initialize(fn)
  @filename = fn
  #load_file()
end

Instance Attribute Details

#filename ⇒ Object (readonly)

Returns the value of attribute filename.



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# File 'lib/morpheus/cli/dot_file.rb', line 24

def filename
  @filename
end

Class Method Details

.morpheus_profile_filename ⇒ Object

the path of the profile source file this is executed when ‘morpheus` is run



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# File 'lib/morpheus/cli/dot_file.rb', line 14

def self.morpheus_profile_filename
  File.join(Morpheus::Cli.home_directory, ".morpheus_profile")
end

.morpheusrc_filename ⇒ Object

the path of the shell source file this is executed when ‘morpheus shell` is run



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# File 'lib/morpheus/cli/dot_file.rb', line 20

def self.morpheusrc_filename
  File.join(Morpheus::Cli.home_directory, ".morpheusrc")
end

Instance Method Details

#execute(stop_on_failure = false, &block) ⇒ Array

execute this file as a morpheus shell script

Parameters:

  • stop_on_failure (true, false) (defaults to: false) —

    the will halt execution if a command returns false. Default is false, keep going…

Returns:

  • (Array) —

    exit codes of all the commands that were run.



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# File 'lib/morpheus/cli/dot_file.rb', line 40

def execute(stop_on_failure=false, &block)
  if !File.exists?(@filename)
    print "#{Term::ANSIColor.red}source file not found: #{@filename}#{Term::ANSIColor.reset}\n" # if Morpheus::Logging.debug?
  else
    Morpheus::Logging::DarkPrinter.puts "executing source file #{@filename}" if Morpheus::Logging.debug?
  end
  file_contents = File.read(@filename)
  lines = file_contents.split("\n")
  cmd_results = []
  line_num = 0
  lines.each_with_index do |line, line_index|
    line_num = line_index + 1
    line = line.strip
    next if line.empty?
    next if line =~ /^\#/ # skip comments
    
    cmd_exit_code = 0
    cmd_err = nil
    cmd_result = nil
    begin
      cmd_result = Morpheus::Cli::CliRegistry.exec_expression(line)
    rescue SystemExit => err
      if err.success?
        cmd_result = true
      else
        puts "#{red} source file: #{@filename}, line: #{line_num}, command: #{line}, error: #{err}#{reset}"
        cmd_result = false
      end
    rescue => err
      # raise err
      puts "#{red} source file: #{@filename}, line: #{line_num}, command: #{line}, error: #{err}#{reset}"
      cmd_result = false
    end
    if cmd_result == false
      if stop_on_failure
        return cmd_results
      end
    end
  end
  return cmd_results
end

#export_aliases(alias_definitions) ⇒ Object

this saves the source file, upserting alias definitions at the bottom todo: smarter logic to allow the user to put stuff AFTER this section too under the section titled ‘# exported aliases’

Parameters:

  • alias_definitions (Map) —

    Map of alias_name => command_string

Returns:

  • nil



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# File 'lib/morpheus/cli/dot_file.rb', line 87

def export_aliases(alias_definitions)
  if !@filename
    print "#{Term::ANSIColor.dark}Skipping source file save because filename has not been set#{Term::ANSIColor.reset}\n" if Morpheus::Logging.debug?
    return false
  end
  if !Dir.exists?(File.dirname(@filename))
    FileUtils.mkdir_p(File.dirname(@filename))
  end
  if !File.exists?(@filename)
    print "#{Term::ANSIColor.dark}Initializing source file #{@filename}#{Term::ANSIColor.reset}\n" if Morpheus::Logging.debug?
    FileUtils.touch(@filename)
  else
    print "#{dark} #=> Saving source file #{@filename}#{reset}\n" if Morpheus::Logging.debug?
  end


  config_text = File.read(@filename)
  config_lines = config_text.split(/\n/)
  new_config_lines = []
  existing_alias_definitions = {}
  header_line_index = config_lines.index {|line| line.strip.include?(EXPORTED_ALIASES_HEADER) }
  # JD: there's some bad bug here where it can clear all your aliases!
  # it would be safer to export to another file at .morpheus/aliases or something.
  if header_line_index
    # keep everything before the exported alias section
    new_config_lines = config_lines[0..header_line_index-1]
    existing_alias_lines = config_lines[header_line_index..config_lines.size-1]
    # parse out the existing alias definitions
    existing_alias_lines.each do |line|
      if line =~ /^alias\s+/
        alias_name, command_string = Morpheus::Cli::CliRegistry.parse_alias_definition(line)
        if alias_name.empty? || command_string.empty?
          print "#{dark} #=> removing bad config line #{line_num} invalid alias definition: #{line}\n" if Morpheus::Logging.debug?
        else
          existing_alias_definitions[alias_name] = command_string
        end
      end
    end
  else
    new_config_lines = config_lines
    new_config_lines << "" # blank line before alias header
  end

  # append header line
  new_config_lines << EXPORTED_ALIASES_HEADER
  new_config_lines << "# Do not put anything below here, or it will be lost when aliases are exported"
  #new_config_lines << ""

  # update aliases, sort them, and append the lines
  new_alias_definitions = existing_alias_definitions.merge(alias_definitions)
  new_alias_definitions.keys.sort.each do |alias_name|
    new_config_lines << "alias #{alias_name}='#{new_alias_definitions[alias_name]}'"
  end
  
  # include a blank line after this section
  new_config_lines << ""
  new_config_lines << ""

  new_config_text = new_config_lines.join("\n")
  
  File.open(@filename, 'w') {|f| f.write(new_config_text) }
  return true
end

#remove_aliases(alias_names) ⇒ Object

this saves the source file, removing alias definitions at the bottom todo: smarter logic to allow the user to put stuff AFTER this section too under the section titled ‘# exported aliases’

Parameters:

  • alias_definitions (Map) —

    Map of alias_name => command_string

Returns:

  • nil



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# File 'lib/morpheus/cli/dot_file.rb', line 156

def remove_aliases(alias_names)
  if !@filename
    print "#{Term::ANSIColor.dark}Skipping source file save because filename has not been set#{Term::ANSIColor.reset}\n" if Morpheus::Logging.debug?
    return false
  end
  if !Dir.exists?(File.dirname(@filename))
    FileUtils.mkdir_p(File.dirname(@filename))
  end
  if !File.exists?(@filename)
    print "#{Term::ANSIColor.dark}Initializing source file #{@filename}#{Term::ANSIColor.reset}\n" if Morpheus::Logging.debug?
    FileUtils.touch(@filename)
  else
    print "#{dark} #=> Saving source file #{@filename}#{reset}\n" if Morpheus::Logging.debug?
  end


  config_text = File.read(@filename)
  config_lines = config_text.split(/\n/)
  
  new_config_lines = config_lines.reject {|line|
    alias_names.find {|alias_name| /^alias\s+#{Regexp.escape(alias_name)}\s?\=/ }
  }
  
  new_config_text = new_config_lines.join("\n")
  
  File.open(@filename, 'w') {|f| f.write(new_config_text) }
  return true
end