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Contents
# frozen_string_literal: true
require 'csv'
module Zizia
##
# A parser for CSV files. A single `InputRecord` is returned for each row
# parsed from the input.
#
# Validates the format of the CSV, generating a single error the file is
# malformed. This error gives the line number and a message for the first
# badly formatted row.
#
# @see CsvFormatValidator
class CsvParser < Parser
DEFAULT_VALIDATORS = [CsvFormatValidator.new].freeze
EXTENSION = '.csv'
class << self
##
# Matches all '.csv' filenames.
def match?(file:, **_opts)
File.extname(file) == EXTENSION
rescue TypeError
false
end
end
##
# Gives a record for each line in the .csv
#
# @see Parser#records
def records
return enum_for(:records) unless block_given?
file.rewind
CSV.parse(file.read, headers: true).each do |row|
yield InputRecord.from(metadata: row)
end
rescue CSV::MalformedCSVError => e
Rails.logger.error "[zizia] The file #{file} could not be parsed as CSV: #{e}"
end
end
end
Version data entries
24 entries across 24 versions & 1 rubygems