git log prettification

.gitconfig

[alias]
  lg              = "!git log -n 100 --graph --date=short --pretty=tformat:'%h||%cd||%an||%d||%s' | gfix"
  l               = "!git log -n 100 --reverse --date=short --pretty=tformat:'%h||%cd||%an||%d||%s' | gfix"
  ll              = "!git log -n 1000 --reverse --date=short --pretty=tformat:'%h||%cd||%an||%d||%s' | gfix"

gfix

#!/usr/bin/ruby

class String
  COLORS = {
    :red    => "\e[31m",
    :orange => "\e[33m",
    :green  => "\e[32m",
    :blue   => "\e[34m",
    :purple => "\e[35m",
    :teal   => "\e[36m",
    :lgray  => "\e[37m",
    :gray   => "\e[30m",
  }

  def fixed(n, ellipsis=nil)
    if self.length > n
      if ellipsis
        self.slice(0,n-2) + '..'.colored(ellipsis)
      else
        self.slice(0,n)
      end
    elsif self.length == n
      self
    else
      self + (" " * (n - self.length))
    end
  end

  def colored(color)
    cc = COLORS[color]
    reset = "\e[0m"

    if cc
      cc + self + reset
    else
      self
    end
  end

  def uncolored_length
    s = self.dup
    COLORS.each_pair do |k,v|
      s = s.gsub(v,'')
    end
    s = s.gsub("\e[0m", '')
    s.length
  end

  def simple_refs
    return '' unless self =~ /\S/
    refs = self.strip.gsub(/[\(\)]/,'').split(/,/)
    refs.map do |ref|
      ref.strip.
        gsub(/HEAD/, 'H').
        gsub(/origin/, 'o').
        strip.
        colored(:orange)
    end.
      join(',').
      gsub(/,/, ",".colored(:gray))
  end

  def right_overlay(little, ecolor=nil)
    left_part = self.strip.fixed(self.length - little.uncolored_length - 1, ecolor)
    left_part + " " + little
  end
end

inlines = []
widest_tree = 0
begin
  ARGF.each_line do |ln|
    inlines << ln
    if ln =~ /\w{6}/ and not ln =~ /^\w{6}/
      tree = ln.slice(0, ln =~ /\w/)
      widest_tree = [widest_tree, tree.length].max
    end
  end
end

begin
  inlines.each do |ln|
    if ln =~ /\w{5}/
      tree = ""
      unless ln =~ /^\w{6}/
        tree = ln.slice(0, ln =~ /\w/)
        ln = ln.slice(tree.length, 10000)
      end
      chash, date, author, refs, subject = ln.chomp.split '||'
      fname = author.strip.split(/\s+/).first
      out = ""
      out += tree.fixed(widest_tree)
      out += "#{chash.colored(:red)} "
      out += "#{date.colored(:green)} "
      if refs and refs =~ /\S/
        out += "#{subject.fixed(80).right_overlay(refs.simple_refs, :gray) } "
      else
        out += "#{subject.fixed(80, :gray)} "
      end
      out += "#{fname.fixed(5).colored(:gray)} "
      puts out
    else
      puts ln
    end
  end
rescue Errno::EPIPE
end