Class: RMARC::Leader

Inherits:
Object
  • Object
show all
Defined in:
lib/rmarc/model/leader.rb

Overview

This class represents a leader or record label in a MARC record.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ldr = nil) ⇒ Leader

Returns a new instance of Leader.



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# File 'lib/rmarc/model/leader.rb', line 30

def initialize(ldr = nil)
  if (ldr == nil)
    @record_length = 0
    @record_status = "n"
    @record_type = "a"
    @impl_defined1 = "m "
    @char_coding = " "
    @indicator_count = "2"
    @subfield_code_length = "2"
    @base_address = 0
    @impl_defined2 = "a "
    @entry_map = "4500"
  else
    @record_length = ldr[0,5].to_i
    @record_status = ldr[5].chr
    @record_type = ldr[6].chr
    @impl_defined1 = ldr[7,2].to_s
    @char_coding = ldr[9].chr
    @indicator_count = ldr[10].chr
    @subfield_code_length = ldr[11].chr
    @base_address = ldr[12,5].to_i
    @impl_defined2 = ldr[17,3].to_s
    @entry_map = ldr[20,4].to_s
  end
end

Instance Attribute Details

#base_address ⇒ Object

Returns the value of attribute base_address.



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# File 'lib/rmarc/model/leader.rb', line 28

def base_address
  @base_address
end

#char_coding ⇒ Object

Returns the value of attribute char_coding.



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# File 'lib/rmarc/model/leader.rb', line 28

def char_coding
  @char_coding
end

#entry_map ⇒ Object

Returns the value of attribute entry_map.



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# File 'lib/rmarc/model/leader.rb', line 28

def entry_map
  @entry_map
end

#impl_defined1 ⇒ Object

Returns the value of attribute impl_defined1.



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# File 'lib/rmarc/model/leader.rb', line 28

def impl_defined1
  @impl_defined1
end

#impl_defined2 ⇒ Object

Returns the value of attribute impl_defined2.



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# File 'lib/rmarc/model/leader.rb', line 28

def impl_defined2
  @impl_defined2
end

#indicator_count ⇒ Object

Returns the value of attribute indicator_count.



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# File 'lib/rmarc/model/leader.rb', line 28

def indicator_count
  @indicator_count
end

#record_length ⇒ Object

Returns the value of attribute record_length.



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# File 'lib/rmarc/model/leader.rb', line 28

def record_length
  @record_length
end

#record_status ⇒ Object

Returns the value of attribute record_status.



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# File 'lib/rmarc/model/leader.rb', line 28

def record_status
  @record_status
end

#record_type ⇒ Object

Returns the value of attribute record_type.



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# File 'lib/rmarc/model/leader.rb', line 28

def record_type
  @record_type
end

#subfield_code_length ⇒ Object

Returns the value of attribute subfield_code_length.



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# File 'lib/rmarc/model/leader.rb', line 28

def subfield_code_length
  @subfield_code_length
end

Instance Method Details

#to_s ⇒ Object

Returns a string representation for a leader.

Example:

00714cam a2200205 a 4500



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# File 'lib/rmarc/model/leader.rb', line 61

def to_s
"%05d" % @record_length + 
"#@record_status#@record_type#@impl_defined1#@char_coding" +
"#@indicator_count#@subfield_code_length" + 
"%05d" % @base_address + "#@impl_defined2#@entry_map"
end