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Contents
require "optparse"
class OptionParser
class Category
def initialize(str)
@name = str
end
def summarize(*args, &block)
yield('')
yield(@name)
end
def summarize_as_roff(&block)
yield(".SH #{::OptionParser.roff_escape(@name)}")
end
end
class Switch
def summarize_as_roff(&block)
var = nil
opt_str = [@short, @long].flatten.collect {|s|
"\\fB#{::OptionParser.roff_escape(s)}\\fR"
}.join(', ')
opt_str << arg.sub(/\A([=\s\[]*)(.+?)([\s\]]*)\z/) {
var = $2
"#{$1}\\fI#{$2}\\fR#{$3}"
} if arg
yield('.TP')
yield(opt_str)
desc.each do |d|
d_str = ::OptionParser.roff_escape(d)
d_str.gsub!(var) { "\\fI#{var}\\fR" } if var
yield(d_str)
end
end
end
class List
def summarize_as_roff(&block)
list.each do |opt|
if opt.respond_to?(:summarize_as_roff)
opt.summarize_as_roff(&block)
end
# FIXME: and otherwise process separators and banners...
end
end
end
# TODO: decide whether we show this option in the option summary.
Officious['roff'] = proc do |parser|
Switch::NoArgument.new do
puts parser.roff
exit
end
end
# TODO: make this option user-visible after implementing all.
Officious['man'] = proc do |parser|
Switch::NoArgument.new do
IO.popen('man -l -', 'w') do |io|
io.puts parser.roff
end
exit
end
end
def roff
to = [%[.TH #{self.class.roff_escape(program_name.upcase)} "1"]]
visit(:summarize_as_roff) do |l|
to << l + $/
end
to
end
def category(str)
top.append(Category.new(str), nil, nil)
end
def self.roff_escape(str)
str.gsub(/[-\\]/, '\\\\\\&').gsub(/^[.']/, '\\&') # '
# TODO: taken over from rd2man-lib.rb, necessary to be confirmed
end
end
Version data entries
43 entries across 43 versions & 1 rubygems