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# frozen_string_literal: true
module Faker
class Alphanumeric < Base
##
# List of characters allowed for alphanumeric strings
# @private
ALPHANUMS = LLetters + Numbers
class << self
##
# Produces a random string of alphabetic characters (no digits)
#
# @param number [Integer] The length of the string to generate
#
# @return [String]
#
# @example
# Faker::Alphanumeric.alpha(number: 10) #=> "zlvubkrwga"
#
# @faker.version 1.9.2
def alpha(legacy_number = NOT_GIVEN, number: 32)
warn_for_deprecated_arguments do |keywords|
keywords << :number if legacy_number != NOT_GIVEN
end
char_count = resolve(number)
return '' if char_count.to_i < 1
Array.new(char_count) { sample(self::LLetters) }.join
end
##
# Produces a random string of alphanumeric characters
#
# @param number [Integer] The number of characters to generate
# @param min_alpha [Integer] The minimum number of alphabetic to add to the string
# @param min_numeric [Integer] The minimum number of numbers to add to the string
#
# @return [String]
#
# @example
# Faker::Alphanumeric.alphanumeric(number: 10) #=> "3yfq2phxtb"
# @example
# Faker::Alphanumeric.alphanumeric(number: 10, min_alpha: 3) #=> "3yfq2phxtb"
# @example
# Faker::Alphanumeric.alphanumeric(number: 10, min_alpha: 3, min_numeric: 3) #=> "3yfq2phx8b"
#
# @faker.version 2.1.3
def alphanumeric(legacy_number = NOT_GIVEN, number: 32, min_alpha: 0, min_numeric: 0)
warn_for_deprecated_arguments do |keywords|
keywords << :number if legacy_number != NOT_GIVEN
end
char_count = resolve(number)
return '' if char_count.to_i < 1
raise ArgumentError, 'min_alpha must be greater than or equal to 0' if min_alpha&.negative?
raise ArgumentError, 'min_numeric must be greater than or equal to 0' if min_numeric&.negative?
return Array.new(char_count) { sample(ALPHANUMS) }.join if min_alpha.zero? && min_numeric.zero?
raise ArgumentError, 'min_alpha + min_numeric must be <= number' if min_alpha + min_numeric > char_count
random_count = char_count - min_alpha - min_numeric
alphas = Array.new(min_alpha) { sample(self::LLetters) }
numbers = Array.new(min_numeric) { sample(self::Numbers) }
randoms = Array.new(random_count) { sample(ALPHANUMS) }
combined = alphas + numbers + randoms
combined.shuffle.join
end
end
end
end
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