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Contents
module IOStreams
module Record
# Converts each line of an input stream into hash for every row
class Reader
include Enumerable
# Read a record as a Hash at a time from a file or stream.
def self.open(file_name_or_io, delimiter: nil, buffer_size: 65536, encoding: nil, encode_cleaner: nil, encode_replace: nil, **args)
if file_name_or_io.is_a?(String)
IOStreams.line_reader(file_name_or_io,
delimiter: delimiter,
buffer_size: buffer_size,
encoding: encoding,
encode_cleaner: encode_cleaner,
encode_replace: encode_replace
) do |io|
yield new(io, file_name: file_name_or_io, **args)
end
else
yield new(file_name_or_io, **args)
end
end
# Create a Tabular reader to return the stream as Hash records
# Parse a delimited data source.
#
# Parameters
# delimited: [#each]
# Anything that returns one line / record at a time when #each is called on it.
#
# format: [Symbol]
# :csv, :hash, :array, :json, :psv, :fixed
#
# For all other parameters, see Tabular::Header.new
def initialize(line_reader, cleanse_header: true, **args)
@tabular = IOStreams::Tabular.new(**args)
@line_reader = line_reader
@cleanse_header = cleanse_header
end
def each
@line_reader.each do |line|
if @tabular.header?
@tabular.parse_header(line)
@tabular.cleanse_header! if @cleanse_header
else
yield @tabular.record_parse(line)
end
end
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems