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require 'knapsack_solver/solver'
require 'knapsack_solver/version'
require 'knapsack_solver/cli_option_parser'
require 'knapsack_solver/output_printer'
require 'knapsack_solver/graph_printer'
module KnapsackSolver
# This class implements a command-line interface for the 0/1 knapsack
# problem solver.
class CLI
# Suffix of a text file which will containg results of dataset solving
# (price, knapsack things presence, cpu time, wall clock time,
# relative_error).
RESULTS_FILNEMAE_SUFFIX = '.results'.freeze
# Suffix of a text file which will containg statistic data (average price,
# execution times, relative error)
STATS_FILNEMAE_SUFFIX = '.stats'.freeze
# Processes command-line arguments. If no option is given, converts arabic
# number to roman number and prints it to stdout.
#
# @param args [Array] the command-line arguments
def self.run(args)
options = CliOptionParser.parse(args)
return if options.nil?
datasets = args.each_with_object([]) do |file, sets|
sets << Dataset.parse(File.new(file))
end
s = Solver.new(options, datasets)
results = s.run
print_results(results, s.stats(results), options, args)
end
# Prints output of datasets solving. Results and statistics are printed to
# stdout or to a text files. Graphs of statistic values can be created.
#
# @param results [Hash] results of dataset solvings
# @param stats [Hash] statistics from the results of dataset solvings
# @param options [Hash] Command-line line options supplied to the CLI
# @param args [Array] array of the positional command-line arguments
def self.print_results(results, stats, options, args)
OutputPrinter.new(args, RESULTS_FILNEMAE_SUFFIX, results).print(options[:output_dir])
OutputPrinter.new(args, STATS_FILNEMAE_SUFFIX, stats).print(options[:output_dir])
return unless options[:graphs_dir]
GraphPrinter.new(args, stats, options[:graphs_dir]).print
end
end
end
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