Module: UPM::Tool::DSL

Included in:
UPM::Tool
Defined in:
lib/upm/tool_dsl.rb

Instance Method Summary collapse

Instance Method Details

#call_command(name, *args) ⇒ Object 



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# File 'lib/upm/tool_dsl.rb', line 134

def call_command(name, *args)
  if block = (@cmds[name] || @cmds[ALIASES[name]])
    block.call args
  else
    puts "Command #{name.inspect} not supported by #{@name.inspect}"
  end
end

#command(name, shell_command = nil, root: false, paged: false, highlight: nil, &block) ⇒ Object 



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# File 'lib/upm/tool_dsl.rb', line 16

def command(name, shell_command=nil, root: false, paged: false, highlight: nil, &block)
  @cmds ||= {}

  if block_given?
    
    if root and Process.uid != 0
      exec("sudo", $PROGRAM_NAME, *ARGV)
    else
      @cmds[name] = block
    end

  elsif shell_command
    
    if shell_command.is_a? String
      shell_command = shell_command.split
    elsif not shell_command.is_a? Array
      raise "Error: command argument must be a String or an Array; it was a #{cmd.class}"
    end

    @cmds[name] = proc do |args|
      query = highlight ? args.join(" ") : nil
      run(*shell_command, *args, paged: paged, root: root, highlight: query)
    end

  else
    
    raise "Error: Must supply a block or shell command"
  
  end
end

#curl(url) ⇒ Object 



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# File 'lib/upm/tool_dsl.rb', line 112

def curl(url)
  IO.popen(["curl", "-Ss", url], &:read)
rescue Errno::ENOENT
  puts "Error: 'curl' isn't installed. You need this!"
  exit 1
end

#help ⇒ Object 



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# File 'lib/upm/tool_dsl.rb', line 142

def help
  if osname = Tool.nice_os_name
    puts "    Detected OS: #{osname}"
  end

  puts "Package manager: #{@name}"
  puts
  puts "Available commands:"
  available = COMMAND_HELP.select do |name, desc|
    names = name.split("/")
    names.any? { |name| @cmds[name] }
  end

  max_width = available.map(&:first).map(&:size).max
  available.each do |name, desc|
    puts "  #{name.rjust(max_width)} | #{desc}"
  end
end

#identifying_binary(id_bin = nil) ⇒ Object 



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# File 'lib/upm/tool_dsl.rb', line 4

def identifying_binary(id_bin=nil)
  if id_bin 
    @id_bin = id_bin
  else
    @id_bin || @name
  end
end

#os(*names) ⇒ Object 



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# File 'lib/upm/tool_dsl.rb', line 47

def os(*names)
  names.any? ? @os = names : @os
end

#prefix(name) ⇒ Object 



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# File 'lib/upm/tool_dsl.rb', line 12

def prefix(name)
  @prefix = name
end

#print_files(*paths, include: nil, exclude: nil) ⇒ Object 



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# File 'lib/upm/tool_dsl.rb', line 119

def print_files(*paths, include: nil, exclude: nil)
  lesspipe do |less|
    paths.each do |path|
      less.puts "<8>=== <11>#{path} <8>========".colorize
      open(path) do |io|
        enum = io.each_line
        enum = enum.grep(include) if include
        enum = enum.reject { |line| line[exclude] } if exclude
        enum.each { |line| less.puts line }
      end
      less.puts
    end
  end
end

#run(*args, root: false, paged: false, grep: nil, highlight: nil) ⇒ Object

Helpers



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# File 'lib/upm/tool_dsl.rb', line 53

def run(*args, root: false, paged: false, grep: nil, highlight: nil)
  if root
    if Process.uid != 0
      if File.which("sudo") 
        args.unshift "sudo"
      elsif File.which("su")
        args = ["su", "-c"] + args
      else
        raise "Error: You must be root to run this command. (And I couldn't find the 'sudo' *or* 'su' commands.)"
      end
    end   
  end

  if !paged and !grep
    system(*args)
  else

    IO.popen(args, err: [:child, :out]) do |command_io|
      
      # if grep
      #   pattern = grep.is_a?(Regexp) ? grep.source : grep.to_s 
      #   grep_io = IO.popen(["grep", "--color=always", "-Ei", pattern], "w+")
      #   IO.copy_stream(command_io, grep_io)
      #   grep_io.close_write
      #   command_io = grep_io
      # end

      # if paged
      #   lesspipe do |less|
      #     IO.copy_stream(command_io, less)
      #   end
      # else
      #   IO.copy_stream(command_io, STDOUT)
      # end

      highlight_proc = if highlight
        proc { |line| line.gsub(highlight) { |m| "\e[33;1m#{m}\e[0m" } }
      else
        proc { |line| line }
      end

      grep_proc = if grep
        proc { |line| line[grep] }
      else
        proc { true }
      end

      lesspipe(disabled: !paged) do |less|
        command_io.each_line do |line|
          less.puts highlight_proc.(line) if grep_proc.(line)
        end
      end

    end

    $?.to_i == 0
  end
end