Class: EDI::Time

Inherits:
Time
  • Object
show all
Defined in:
lib/edi4r.rb,
lib/edi4r/edifact.rb

Overview

Here we extend class Time by some methods that help us maximize its use in the UN/EDIFACT context.

Basic idea:

  • Use the EDIFACT qualifiers of DE 2379 in DTM directly to parse dates and to create them upon output.

  • Use augmented Time objects as values of DE 2380 instead of strings

Currently supported formats: 101, 102, 201, 203, 204

Constant Summary collapse

@@to_s_callbacks = 
[]

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#format ⇒ Object

Returns the value of attribute format.



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# File 'lib/edi4r.rb', line 158

def format
  @format
end

Class Method Details

.edifact(str, fmt = 102) ⇒ Object 



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# File 'lib/edi4r/edifact.rb', line 127

def Time.edifact(str, fmt=102)
  msg = "Time.edifact: #{str} does not match format #{fmt}"
  case fmt.to_s
  when '101'
    rc = str =~ /(\d\d)(\d\d)(\d\d)(.+)?/
    raise msg unless rc and rc==0; warn msg if $4
    year = $1.to_i
    year += (year < 69) ? 2000 : 1900 # See ParseDate
    dtm = EDI::Time.local(year, $2, $3)

  when '102'
    rc = str =~ /(\d\d\d\d)(\d\d)(\d\d)(.+)?/
    raise msg unless rc and rc==0; warn msg if $4
    dtm = EDI::Time.local($1, $2, $3)

  when '201'
    rc = str =~ /(\d\d)(\d\d)(\d\d)(\d\d)(\d\d)(.+)?/
    raise msg unless rc and rc==0; warn msg if $6
    year = $1.to_i
    year += (year < 69) ? 2000 : 1900 # See ParseDate
    dtm = EDI::Time.local(year, $2, $3, $4, $5)

  when '203'
    rc = str =~ /(\d\d\d\d)(\d\d)(\d\d)(\d\d)(\d\d)(.+)?/
    raise msg unless rc and rc==0; warn msg if $6
    dtm = EDI::Time.local($1, $2, $3, $4, $5)

  when '204'
    rc = str =~ /(\d\d\d\d)(\d\d)(\d\d)(\d\d)(\d\d)(\d\d)(.+)?/
    raise msg unless rc and rc==0; warn msg if $7
    dtm = EDI::Time.local($1, $2, $3, $4, $5, $6)

  else
    raise "Time.edifact: Format #{fmt} not supported - sorry"
  end
  dtm.format = fmt.to_s
  dtm
end

Instance Method Details

#to_s ⇒ Object 



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# File 'lib/edi4r.rb', line 163

def to_s
  return to_s_orig unless @format
  str = nil
  @@to_s_callbacks.each do |sym|
	return str if (str=self.send(sym)) # Found if not nil
  end
  raise "EDI::Time: Format '#{format}' not supported" 
end

#to_s_edifact ⇒ Object 



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# File 'lib/edi4r/edifact.rb', line 166

def to_s_edifact
  case @format.to_s
  when '101'
    "%02d%02d%02d" % [year % 100, mon, day]
  when '102'
    "%04d%02d%02d" % [year, mon, day]
  when '201'
    "%02d%02d%02d%02d%02d" % [year % 100, mon, day, hour, min]
  when '203'
    "%04d%02d%02d%02d%02d" % [year, mon, day, hour, min]
  when '204'
    "%04d%02d%02d%02d%02d%2d" % [year, mon, day, hour, min, sec]
  else
	nil # nil indicates that there was no matching format
  end
end

#to_s_orig ⇒ Object 



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# File 'lib/edi4r.rb', line 161

alias to_s_orig to_s