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Versions: 6
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Stored size: 1.31 KB
Contents
##
# = ReadOperations
#
# Defines functionality required for the successful reading, parsing and
# interpreting of a line of text contained in a flat file.
#
module ReadOperations
module ClassMethods #:nodoc:
end # => module ClassMethods
##
# = Instance Methods
#
# Defines behavior for instances of a subclass of Flat::File regarding the
# reading and parsing of the file contents, line by line.
#
module InstanceMethods
# Iterate through each record (each line of the data file). The passed
# block is passed a new Record representing the line.
#
# s = SomeFile.new
# s.each_record(open('/path/to/file')) do |r|
# puts r.first_name
# end
#--
# NOTE: Expects an open valid IO handle; opening and closing is out of scope
#++
#
def each_record io, &block
io.each_line do |line|
line.chop!
next if line.length.zero?
unless (self.width - line.length).zero?
raise Errors::RecordLengthError, "length is #{line.length} but should be #{self.width}"
end
yield create_record(line, io.lineno), line
end
end
end # => module InstanceMethods
def self.included receiver #:nodoc:
receiver.extend ClassMethods
receiver.send :include, InstanceMethods
end
end # => module ReadOperations
Version data entries
6 entries across 6 versions & 1 rubygems