dx - easy tool for changing long directory path

README.md

dx - easy tool for changing long directory path

Install

Put dx to $PATH, and add d function to your shell configuration (bash or fish).

Usage

~/some/long/path $ dx add sc
~/some/long/path $ dx ls
sc     ~/some/long/path
~/some/long/path $ cd ~
~ $ pwd
~
~ $ d sc
~/some/long/path $

d.bash

function d {
  dir=$("dx" $*) && cd $dir;
}

function _dcomp () {
  local cur dlist
  cur="${COMP_WORDS[COMP_CWORD]}"
  prev="${COMP_WORDS[COMP_CWORD-1]}"
  dlist=$(dx tab)

  if [[ ${prev} == d ]] ; then
    COMPREPLY=( $(compgen -W "${dlist}" -- $cur) )
    return 0
  fi
}

complete -F _dcomp d

d.fish

function d
  cd (dx $argv)
end

dx

#!/usr/bin/env ruby
require 'fileutils'

def load_path file
  lines = IO.readlines file
  mapping = {}

  for line in lines
    name, dir = line.chomp.split ' = '
    mapping[name] = dir
  end

  mapping
end

def save_path file, mapping
  File.open(file, 'w') do |f|
    for name, dir in mapping
      f.puts "#{name} = #{dir}"
    end
  end
end

SINGLE = %w[ls help tab]

if __FILE__ == $0
  rc = File.expand_path(ENV['DXRC'] || '~/.dxrc')
  FileUtils.touch rc unless File.exists? rc
  mapping = load_path rc

  ARGV << 'ls' if ARGV.empty?
  if ARGV.size == 1 and !SINGLE.include?(ARGV[0])
    dir = mapping[ARGV[0]]
    if dir
      puts dir
    else
      $stderr.puts "Mapping #{ARGV[0]} is not found!"
    end
  else
    case ARGV[0]
    when 'add'
      if ARGV[1] == 'ls' or ARGV[1] == 'help'
        puts "Name cannot be 'ls' or 'help'!"
        exit 1
      end
      dir = if ARGV.size < 3
              `pwd`
            else
              ARGV[2]
            end
      mapping[ARGV[1]] = dir
      save_path rc, mapping
    when 'rm'
      mapping.delete! ARGV[1]
      save_path rc, mapping
    when 'ls'
      for name, dir in mapping
        puts "#{name}\t#{dir}"
      end
    when 'tab'
      puts mapping.keys.join ' '
    when 'help'
      puts "Usage: dx [ls]"
      puts "       dx add [name] [path (default = pwd)]"
      puts "       dx rm [name]"
    end
  end
end