clip temporary message.

clip

#!/usr/bin/env ruby
require 'json'
require 'optparse'

def clipfile
  return File.join(Dir.home, ".cliplog")
end

def load
  return File.exists?(clipfile) ? File.open(clipfile, "r").read : "{}"
end

def save(content)
  File.open(clipfile, "w") do |f|
    f.write content
  end
end

def readstr()
  begin
    return STDIN.read.chomp
  rescue Interrupt, Errno::ENTER
    exit 1
  end
end

def clipush(key, value) 
  json = JSON.parse(load())
  json[key] = value
  save(JSON.generate(json))
end

def clipop(key)
  json = JSON.parse(load())
  json[key] == nil ? "" : json[key]
end

def clipclear()
  File.delete(clipfile)
end

def cliplist
  json = JSON.parse(load())
  json.each do |key, value|
    puts "#{key}\t#{value}"
  end
end

def clipkeys
  json = JSON.parse(load())
  puts json.keys
end

def clipvalues
  json = JSON.parse(load())
  puts json.values
end

# -------
# main
# -------

#
# usage:
#   echo "hello" clip push hoge
#   clip pop hoge
#

command = nil

if ARGV.size > 0 
  command = ARGV.shift.to_sym
end

if command == nil
  command = :pop
end

case command
when :push
  key = ARGV.size > 0 ? ARGV[0] : "default"
  value = readstr()
  clipush(key, value)
when :pop
  key = ARGV.size > 0 ? ARGV[0] : "default"
  print clipop(key)
when :clear
  clipclear()
when :list
  cliplist()
when :keys
  clipkeys()
when :values
  clipvalues()
end