Class: PVN::Diff::Cmd

Inherits:
Object
  • Object
show all
Includes:
Logue::Loggable
Defined in:
lib/pvn/diff/diffcmd.rb

Instance Method Summary collapse

Constructor Details

#initialize(displaypath, fromrev, torev, fromlines, tolines, whitespace) ⇒ Cmd

Returns a new instance of Cmd.



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# File 'lib/pvn/diff/diffcmd.rb', line 11

def initialize displaypath, fromrev, torev, fromlines, tolines, whitespace
  open_temp_file(fromlines) do |from|
    open_temp_file(tolines) do |to|
      cmd = "diff -u"
      if whitespace
        cmd << " -w"
      end

      [ fromrev, torev ].each do |rev|
        revstr = to_revision_string rev
        cmd << " -L '#{displaypath}\t(#{revstr})'"
      end
      cmd << " #{from.path}"
      cmd << " #{to.path}"

      info "cmd: #{cmd}"

      $io.puts "Index: #{displaypath}"
      $io.puts "==================================================================="
      IO.popen(cmd) do |io|
        $io.puts io.readlines
      end
    end
  end
end

Instance Method Details

#open_temp_file(lines, &blk) ⇒ Object 



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# File 'lib/pvn/diff/diffcmd.rb', line 37

def open_temp_file lines, &blk
  Tempfile.open('pvn') do |tmpfile|
    if lines
      tmpfile.puts lines
    end
    tmpfile.close

    blk.call tmpfile
  end
end

#to_revision_string(rev) ⇒ Object 



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# File 'lib/pvn/diff/diffcmd.rb', line 48

def to_revision_string rev
  rev ? "revision #{rev}" : "working copy"
end