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Refactoring parsers

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This commit is contained in:
kojix2 2020-07-30 12:44:31 +09:00
parent 9859cd0213
commit 0110b70936
1 changed files with 32 additions and 38 deletions
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64
lib/uplot/command.rb
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@ -6,41 +6,8 @@ module Uplot
parse_options(argv) parse_options(argv)
end end
def parse_options(argv) def opt_new
parser = OptionParser.new do |opt| OptionParser.new do |opt|
add_common_opts(opt)
end
subparsers = Hash.new do |_h, k|
warn "no such subcommand: #{k}"
exit 1
end
subparsers['hist'] = OptionParser.new do |sub|
sub.on('--nbins VAL', Numeric) { |v| @params[:nbins] = v }
add_common_opts(sub)
end
subparsers['histogram'] = subparsers['hist']
subparsers['line'] = OptionParser.new do |sub|
add_common_opts(sub)
end
subparsers['lineplot'] = subparsers['line']
subparsers['lines'] = OptionParser.new do |sub|
add_common_opts(sub)
end
parser.banner = <<~MSG
Usage:\tuplot <command> [options]
Command:\t#{subparsers.keys.join(' ')}
MSG
parser.order!(argv)
@ptype = argv.shift
subparsers[@ptype].parse!(argv) unless argv.empty?
end
def add_common_opts(opt)
opt.on('-o', '--output', TrueClass) { |v| @print = v } opt.on('-o', '--output', TrueClass) { |v| @print = v }
opt.on('-t', '--title VAL', String) { |v| @params[:title] = v } opt.on('-t', '--title VAL', String) { |v| @params[:title] = v }
opt.on('-w', '--width VAL', Numeric) { |v| @params[:width] = v } opt.on('-w', '--width VAL', Numeric) { |v| @params[:width] = v }
@ -50,6 +17,33 @@ module Uplot
opt.on('-p', '--padding VAL', Numeric) { |v| @params[:padding] = v } opt.on('-p', '--padding VAL', Numeric) { |v| @params[:padding] = v }
opt.on('-l', '--labels', TrueClass) { |v| @params[:labels] = v } opt.on('-l', '--labels', TrueClass) { |v| @params[:labels] = v }
end end
end
def parse_options(argv)
main_parser = opt_new
parsers = {}
parsers['hist'] = opt_new.on('--nbins VAL', Numeric) { |v| @params[:nbins] = v }
parsers['histogram'] = parsers['hist']
parsers['line'] = opt_new
parsers['lineplot'] = parsers['line']
parsers['lines'] = opt_new
main_parser.banner = <<~MSG
Usage:\tuplot <command> [options]
Command:\t#{parsers.keys.join(' ')}
MSG
main_parser.order!(argv)
@ptype = argv.shift
unless parsers.has_key?(@ptype)
warn "unrecognized command '#{@ptype}'"
exit 1
end
parser = parsers[@ptype]
parser.parse!(argv) unless argv.empty?
end
def set_common_opts(opt); end
def run def run
# Sometimes the input file does not end with a newline code. # Sometimes the input file does not end with a newline code.