Class: Commons::Lang::Time::DurationFormatUtils

Inherits:
Object
  • Object
show all
Defined in:
lib/commons/lang/time/duration_format_utils.rb

Defined Under Namespace

Classes: Token

Constant Summary collapse

ISO_EXTENDED_FORMAT_PATTERN = 
"'P'yyyy'Y'M'M'd'DT'H'H'm'M's.S'S'"
TOKEN_y = 
:y
TOKEN_M = 
:M
TOKEN_d = 
:d
TOKEN_H = 
:H
TOKEN_m = 
:m
TOKEN_s = 
:s
TOKEN_S = 
:S

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ DurationFormatUtils

Returns a new instance of DurationFormatUtils.



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# File 'lib/commons/lang/time/duration_format_utils.rb', line 52

def initialize
  super()
end

Class Method Details

.format(tokens, years, months, days, hours, minutes, seconds, milliseconds, pad_with_zeros) ⇒ Object 



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# File 'lib/commons/lang/time/duration_format_utils.rb', line 96

def self.format(
  tokens,
  years, months, days, hours, minutes, seconds, milliseconds,
  pad_with_zeros)
  
  buffer = String.new('')
  last_output_seconds = false
  tokens.each {|token|
    value = token.value
    count = token.count
    if value.kind_of?(String)
      buffer.concat(value.to_s)
    else
      if value.equal?(TOKEN_y)
        buffer.concat(
          pad_with_zeros ? years.to_s.rjust(count, '0') : years.to_s)
        last_output_seconds = false
      elsif value.equal?(TOKEN_M)
        buffer.concat(
          pad_with_zeros ? months.to_s.rjust(count, '0') : months.to_s)
        last_output_seconds = false
      elsif value.equal?(TOKEN_d)
        buffer.concat(
          pad_with_zeros ? days.to_s.rjust(count, '0') : days.to_s)
        last_output_seconds = false
      elsif value.equal?(TOKEN_H)
        buffer.concat(
          pad_with_zeros ? hours.to_s.rjust(count, '0') : hours.to_s)
        last_output_seconds = false
      elsif value.equal?(TOKEN_m)
        buffer.concat(
          pad_with_zeros ? minutes.to_s.rjust(count, '0') : minutes.to_s)
        last_output_seconds = false
      elsif value.equal?(TOKEN_s)
        buffer.concat(
          pad_with_zeros ? seconds.to_s.rjust(count, '0') : seconds.to_s)
        last_output_seconds = true
      elsif value.equal?(TOKEN_S)
        if last_output_seconds
          milliseconds += 1000
          str = pad_with_zeros \
            ? milliseconds.to_s.rjust(count, '0') : milliseconds.to_s
          buffer.concat(str[1..-1])
        else
          buffer.concat(pad_with_zeros \
            ? milliseconds.to_s.rjust(count, '0') : milliseconds.to_s)
        end
        last_output_seconds = false
      end
    end
  }
  
  return buffer
end

.format_duration(duration_millis, format, pad_with_zeros = true) ⇒ Object 



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# File 'lib/commons/lang/time/duration_format_utils.rb', line 62

def self.format_duration(duration_millis, format, pad_with_zeros = true)
  tokens = lexx(format)
  
  days         = 0
  hours        = 0
  minutes      = 0
  seconds      = 0
  milliseconds = 0
  
  if Token.contains_token_with_value?(tokens, TOKEN_d)
    days = duration_millis.div(DateUtils::MILLIS_PER_DAY)
    duration_millis = duration_millis - (days * DateUtils::MILLIS_PER_DAY)
  end
  if Token.contains_token_with_value?(tokens, TOKEN_H)
    hours = duration_millis.div(DateUtils::MILLIS_PER_HOUR)
    duration_millis = duration_millis - (hours * DateUtils::MILLIS_PER_HOUR)
  end
  if Token.contains_token_with_value?(tokens, TOKEN_m)
    minutes = duration_millis.div(DateUtils::MILLIS_PER_MINUTE)
    duration_millis = duration_millis - (minutes * DateUtils::MILLIS_PER_MINUTE)
  end
  if Token.contains_token_with_value?(tokens, TOKEN_s)
    seconds = duration_millis.div(DateUtils::MILLIS_PER_SECOND)
    duration_millis = duration_millis - (seconds * DateUtils::MILLIS_PER_SECOND)
  end
  if Token.contains_token_with_value?(tokens, TOKEN_S)
    milliseconds = duration_millis
  end
  
  return format(
    tokens, 0, 0, days, hours, minutes, seconds, milliseconds, pad_with_zeros)
end

.format_duration_hms(duration_millis) ⇒ Object 



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# File 'lib/commons/lang/time/duration_format_utils.rb', line 57

def self.format_duration_hms(duration_millis)
  return format_duration(duration_millis, 'H:mm:ss.SSS')
end

.lexx(format) ⇒ Object

Parses a classic date format string into Tokens



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# File 'lib/commons/lang/time/duration_format_utils.rb', line 153

def self.lexx(format)
  chars = format.split(//)
  tokens = Array.new
  
  in_literal = false
  buffer = nil
  previous = nil
  chars.each {|char|
    if in_literal && char != "'"
      buffer.concat(char)
      next
    end
    value = nil
    case char
      # TODO: Need to handle escaping of '
      when "'"
        if in_literal
          buffer = nil
          in_literal = false
        else
          buffer = String.new('')
          tokens.push(Token.new(buffer))
          in_literal = true
        end
      when 'y' then value = TOKEN_y
      when 'M' then value = TOKEN_M
      when 'd' then value = TOKEN_d
      when 'H' then value = TOKEN_H
      when 'm' then value = TOKEN_m
      when 's' then value = TOKEN_s
      when 'S' then value = TOKEN_S
      else
        if buffer == nil
          buffer = String.new('')
          tokens.push(Token.new(buffer))
        end
        buffer.concat(char)
    end

    if value != nil
      if previous != nil && previous.value.equal?(value)
        previous.increment
      else
        token = Token.new(value)
        tokens.push(token)
        previous = token
      end
      buffer = nil
    end
  }
  
  return tokens
end