class CommandLine::Command
Attributes
switches[R]
Public Class Methods
new()
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# File lib/ejt_command_line.rb, line 45 def initialize @switches = [] @mutually_exclusive_sets = [] # list of lists of syms @mandatory = [] end
Public Instance Methods
add_mandatory_switch(sym)
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# File lib/ejt_command_line.rb, line 59 def add_mandatory_switch(sym) @mandatory << sym end
add_mutually_exclusive_set(syms)
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# File lib/ejt_command_line.rb, line 55 def add_mutually_exclusive_set(syms) @mutually_exclusive_sets << syms.to_set end
add_switches(syms)
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# File lib/ejt_command_line.rb, line 51 def add_switches(syms) @switches += syms end
check_mandatory(syms)
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# File lib/ejt_command_line.rb, line 85 def check_mandatory(syms) missing = [] @mandatory.each do |m| unless syms.member?(m) missing << m end end if missing.size > 0 msg = "missing mandatory switches:\n" missing.each do |m| msg += " #{m}\n" end raise ParseError, msg end end
check_mutual_exclusion(syms)
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# File lib/ejt_command_line.rb, line 63 def check_mutual_exclusion(syms) nr_sets = @mutually_exclusive_sets.size set_counts = Array.new(nr_sets, []) syms.each do |s| # is it in an exclusive set? 0.upto(nr_sets - 1) do |n| if @mutually_exclusive_sets[n].member?(s) set_counts[n] << s end end end 0.upto(nr_sets - 1) do |n| if set_counts[n].size > 1 msg = "mutually exclusive options used:\n" set_counts[n].each {|sym| msg += " #{sym}\n"} raise ParseError, msg end end end