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Contents
module Debugger
def inside_emacs?
ENV['EMACS'] || ENV['INSIDE_EMACS']
end
module_function :inside_emacs?
module ParseFunctions
Position_regexp = '(?:(\d+)|(.+?)[:.#]([^.:\s]+))'
# Parse 'str' of command 'cmd' as an integer between
# min and max. If either min or max is nil, that
# value has no bound.
def get_int(str, cmd, min=nil, max=nil, default=1)
return default unless str
begin
int = Integer(str)
if min and int < min
print "%s argument '%s' needs to at least %s.\n" % [cmd, str, min]
return nil
elsif max and int > max
print "%s argument '%s' needs to at most %s.\n" % [cmd, str, max]
return nil
end
return int
rescue
print "%s argument '%s' needs to be a number.\n" % [cmd, str]
return nil
end
end
# Return true if arg is 'on' or 1 and false arg is 'off' or 0.
# Any other value raises RuntimeError.
def get_onoff(arg, default=nil, print_error=true)
if arg.nil? or arg == ''
if default.nil?
if print_error
print "Expecting 'on', 1, 'off', or 0. Got nothing.\n"
raise RuntimeError
end
return default
end
end
case arg.downcase
when '1', 'on'
return true
when '0', 'off'
return false
else
if print_error
print "Expecting 'on', 1, 'off', or 0. Got: %s.\n" % arg.to_s
raise RuntimeError
end
end
end
# Return 'on' or 'off' for supplied parameter. The parmeter should
# be true, false or nil.
def show_onoff(bool)
if not [TrueClass, FalseClass, NilClass].member?(bool.class)
return "??"
end
return bool ? 'on' : 'off'
end
# Return true if code is syntactically correct for Ruby.
def syntax_valid?(code)
eval("BEGIN {return true}\n#{code}", nil, "", 0)
rescue Exception
false
end
end
end
Version data entries
20 entries across 20 versions & 4 rubygems