Module: Cielli::Utils

Extended by:
Utils
Included in:
Utils
Defined in:
lib/cielli/utils.rb

Instance Method Summary collapse

Instance Method Details

#async_reader_thread_for(io, accum) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 218

def async_reader_thread_for(io, accum)
  Thread.new(io, accum) do |i, a|
    Thread.current.abort_on_exception = true

    while true
      buf = i.read(8192)

      if buf
        a << buf
      else
        break
      end
    end
  end
end

#debug(arg) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 124

def debug(arg)
  debug!(arg) if debug?
end

#debug!(arg) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 116

def debug!(arg)
  if arg.is_a?(String)
    warn "[DEBUG] #{ arg }"
  else
    warn "[DEBUG] >\n#{ arg.to_yaml rescue arg.pretty_inspect }"
  end
end

#debug? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cielli/utils.rb', line 128

def debug?
  ENV['CIELLI_DEBUG'] || ENV['DEBUG']
end

#deepcopy(object) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 112

def deepcopy(object)
  Marshal.load(Marshal.dump(object))
end

#esc(*args) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 25

def esc(*args)
  args.flatten.compact.map{|arg| Shellwords.escape(arg)}.join(' ')
end

#extract_options(args) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 84

def extract_options(args)
  opts = extract_options!(args)

  args.push(opts)

  opts
end

#extract_options!(args) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 72

def extract_options!(args)
  unless args.is_a?(Array)
    args = [args]
  end

  opts = args.last.is_a?(Hash) ? args.pop : {}

  symbolize_keys!(opts)

  return opts
end

#filelist(*args, &block) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/cielli/utils.rb', line 238

def filelist(*args, &block)
  accum = (block || proc{ Set.new }).call
  raise ArgumentError.new('accum.class != Set') unless accum.is_a?(Set)

  _ = args.last.is_a?(Hash) ? args.pop : {}

  entries = args.flatten.compact.map{|arg| realpath("#{ arg }")}.uniq.sort

  entries.each do |entry|
    case
      when test(?f, entry)
        file = realpath(entry)
        accum << file

      when test(?d, entry)
        glob = File.join(entry, '**/**')

        Dir.glob(glob) do |_entry|
          case
            when test(?f, _entry)
              filelist(_entry){ accum }
            when test(?d, entry)
              filelist(_entry){ accum }
          end
        end
    end
  end

  accum.to_a
end

#indent(arg, *args) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 14

def indent(arg, *args)
  opts = extract_options!(args)
  n = (args.shift || opts[:n] || 2).to_i

  string = unindent(arg)

  indentation = ' ' * n

  string.gsub(/^/, indentation)
end

#noop ⇒ Object Also known as: noop? 



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# File 'lib/cielli/utils.rb', line 132

def noop
  ENV['CIELLI_NOOP'] || ENV['NOOP']
end

#realpath(path) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 234

def realpath(path)
  Pathname.new(path.to_s).expand_path.realpath.to_s
end

#slug_for(*args, &block) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 271

def slug_for(*args, &block)
  Slug.for(*args, &block)
end

#symbolize_keys(hash) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 108

def symbolize_keys(hash)
  symbolize_keys!(deepcopy(hash))
end

#symbolize_keys!(hash) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 92

def symbolize_keys!(hash)
  hash.keys.each do |key|
    if key.is_a?(String)
      val = hash.delete(key)

      if val.is_a?(Hash)
        symbolize_keys!(val)
      end

      hash[key.to_s.gsub('-', '_').to_sym] = val
    end
  end

  return hash
end

#sys(*args, &block) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 205

def sys(*args, &block)
  opts = extract_options!(args)
  opts[:quiet] = true

  args.push(opts)

  begin
    sys!(*args, &block)
  rescue Object
    false
  end
end

#sys!(*args, &block) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 137

def sys!(*args, &block)
  opts = extract_options!(args)

  cmd = args

  debug(:cmd => cmd)

  open3 = (
    block ||
    opts[:stdin] ||
    opts[:quiet] ||
    opts[:capture]
  )

  die = proc do |command, *args|
    status = args.shift || $?
    warn("#{ [command].join(' ') } #=> status=#{ status.exitstatus }") unless opts[:quiet]
    exit(1)
  end

  if(open3)
    stdin = opts[:stdin]
    stdout = ''
    stderr = ''
    status = nil

    begin
      Open3.popen3(*cmd) do |i, o, e, t|
        ot = async_reader_thread_for(o, stdout) 
        et = async_reader_thread_for(e, stderr) 

        i.write(stdin) if stdin
        i.close

        ot.join
        et.join

        status = t.value
      end
    rescue
      die[cmd]
    end

    if status.exitstatus == 0
      result = nil

      if opts[:capture]
        result = stdout.to_s.strip
      else
        if block
          result = block.call(status, stdout, stderr)
        else
          result = [status, stdout, stderr]
        end
      end

      return(result)
    else
      die[cmd, status]
    end
  else
    env = opts[:env] || {}
    argv = [env, *cmd]
    system(*argv) || die[cmd]
    return true
  end
end

#tmpfile(*args, &block) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 43

def tmpfile(*args, &block)
  opts = extract_options!(args)

  path = tmpname(opts)


  tmp = open(path, 'w+')
  tmp.binmode
  tmp.sync = true

  unless args.empty?
    src = args.join
    tmp.write(src)
    tmp.flush
    tmp.rewind
  end

  if block
    begin
      block.call(tmp)
    ensure
      FileUtilss.rm_rf(path)
    end
  else
    at_exit{ Kernel.system("rm -rf #{ esc(path) }") }
    return tmp
  end
end

#tmpname(*args) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 33

def tmpname(*args)
  opts = extract_options!(*args)

  base = opts.fetch(:base){ uuid }.to_s.strip
  ext = opts.fetch(:ext){ 'tmp' }.to_s.strip.sub(/^[.]+/, '')
  basename = opts.fetch(:basename){ "#{ base }.#{ ext }" }

  File.join(Dir.tmpdir, basename)
end

#unindent(arg) ⇒ Object 



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# File 'lib/cielli/utils.rb', line 3

def unindent(arg)
  string = arg.to_s.dup
  margin = nil
  string.each_line do |line|
    next if line =~ %r/^\s*$/
    margin = line[%r/^\s*/] and break
  end
  string.gsub!(%r/^#{ margin }/, "") if margin
  margin ? string : nil
end

#uuid ⇒ Object 



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# File 'lib/cielli/utils.rb', line 29

def uuid
  SecureRandom.uuid
end