module IconGenerator::Validator

Module intended to be used as a convenient mixin.

@example Including the validator in a class

class Foo
    include IconGenerator::Validator
    # Now you can use validate_arguments and
    # validate_file_status as if they were your very own.
end

Public Instance Methods

validate_arguments(source, destination) click to toggle source

Validates the given source image file and the destination directory for correctness.

@param source [String] the source image file @param destination [String] the output directory

# File lib/icon_generator/validator.rb, line 16
def validate_arguments(source, destination)
    raise IconGenerator::Error, '1st argument must be a valid image' unless source.match /\.gif$|\.jpg$|\.png$/
    raise IconGenerator::Error, '1st argument must be an existing file' unless File.exists? source
    raise IconGenerator::Error, '2nd argument must be an existing directory' unless Dir.exists? destination
end
validate_file_status(filename) click to toggle source

Validates the existence of the given file.

@param filename [String] the file being tested for existence

# File lib/icon_generator/validator.rb, line 25
def validate_file_status(filename)
    raise IconGenerator::Error unless File.exists? filename
end