class Arx::Cleaner
Class for cleaning strings.
@private
Constants
- URL_PREFIX
arXiv paper URL prefix format
Public Class Methods
clean(string)
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Cleans strings.
@param [String] string Removes newline/return characters and multiple spaces from a string. @return [String] The cleaned string.
# File lib/arx/cleaner.rb, line 17 def clean(string) string.gsub(/\r\n|\r|\n/, ' ').strip.squeeze ' ' end
extract_id(string, version: false)
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Attempt to extract an arXiv identifier from a string such as a URL.
@param string [String] The string to extract the ID from. @param version [Boolean] Whether or not to include the paper's version. @return [String] The extracted ID.
# File lib/arx/cleaner.rb, line 26 def extract_id(string, version: false) if version == !!version if string.is_a? String trimmed = /#{URL_PREFIX}.+\/?$/.match?(string) ? string.gsub(/(#{URL_PREFIX})|(\/$)/, '') : string raise ArgumentError.new("Couldn't extract arXiv identifier from: #{string}") unless Validate.id? trimmed version ? trimmed : trimmed.sub(/v[0-9]+$/, '') else raise TypeError.new("Expected `string` to be a String, got: #{string.class}") end else raise TypeError.new("Expected `version` to be boolean (TrueClass or FalseClass), got: #{version.class}") end end
extract_version(string)
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Attempt to extract a version number from an arXiv identifier.
@param string [String] The arXiv identifier to extract the version number from. @return [String] The extracted version number.
# File lib/arx/cleaner.rb, line 44 def extract_version(string) reversed = extract_id(string, version: true).reverse if /^[0-9]+v/.match? reversed reversed.partition('v').first.reverse.to_i else raise ArgumentError.new("Couldn't extract version number from identifier: #{string}") end end