class MARC::JSONLReader
Read marc-in-json documents from a ‘.jsonl` file – also called “newline-delimited JSON”, which is a file with one JSON document on each line.
Public Class Methods
new(file)
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@param [String, IO] file A filename, or open File/IO type object, from which to read
# File lib/marc/jsonl_reader.rb, line 12 def initialize(file) if file.is_a?(String) raise ArgumentError.new("File '#{file}' can't be found") unless File.exist?(file) raise ArgumentError.new("File '#{file}' can't be opened for reading") unless File.readable?(file) @handle = File.new(file) elsif file.respond_to?(:read, 5) @handle = file else raise ArgumentError, "must pass in path or file" end end
Public Instance Methods
each() { |new_from_hash(parse)| ... }
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Turn marc-in-json lines into actual marc records and yield them @yieldreturn [MARC::Record] record created from each line of the file
# File lib/marc/jsonl_reader.rb, line 26 def each return enum_for(:each) unless block_given? @handle.each do |line| yield MARC::Record.new_from_hash(JSON.parse(line)) end end