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# module : base/variables
# copyright : PRAGMA Advanced Document Engineering
# version : 2002-2005
# author : Hans Hagen
#
# project : ConTeXt / eXaMpLe
# concept : Hans Hagen
# info : j.hagen@xs4all.nl
# www : www.pragma-ade.com
# ['base/tool','tool'].each do |r| begin require r ; rescue Exception ; else break ; end ; end
require 'base/tool'
class Hash
def nothing?(id)
! self[id] || self[id].empty?
end
def subset(pattern)
h = Hash.new
p = pattern.gsub(/([\.\:\-])/) do "\\#{$1}" end
r = /^#{p}/
self.keys.each do |k|
h[k] = self[k].dup if k =~ r
end
return h
end
end
class ExtendedHash < Hash
@@re_var_a = /\%(.*?)\%/
@@re_var_b = /\$\((.*?)\)/
def set(key,value='',resolve=true)
if value then
self[key] = if resolve then resolved(value.to_s) else value.to_s end
else
self[key] = ''
end
end
def replace(key,value='')
self[key] = value if self?(key)
end
def get(key,default='')
if self.key?(key) then self[key] else default end
end
def true?(key)
self[key] =~ /^(yes|on|true|enable|enabled|y|start)$/io rescue false
end
def resolved(str)
begin
str.to_s.gsub(@@re_var_a) do
self[$1] || ''
end.gsub(@@re_var_b) do
self[$1] || ''
end
rescue
str.to_s rescue ''
end
end
def check(key,default='')
if self.key?(key) then
if self[key].empty? then self[key] = (default || '') end
else
self[key] = (default || '')
end
end
def checked(key,default='')
if self.key?(key) then
if self[key].empty? then default else self[key] end
else
default
end
end
def empty?(key)
self[key].empty?
end
# def downcase(key)
# self[key].downcase!
# end
end
# the next one is obsolete so we need to replace things
module Variables
def setvariable(key,value='')
@variables[key] = value
end
def replacevariable(key,value='')
@variables[key] = value if @variables.key?(key)
end
def getvariable(key,default='')
if @variables.key?(key) then @variables[key] else default end
end
def truevariable(key)
@variables[key] =~ /^(yes|on|true)$/io rescue false
end
def checkedvariable(str,default='')
if @variables.key?(key) then
if @variables[key].empty? then default else @variables[key] end
else
default
end
end
def report(*str)
@logger.report(*str)
end
def debug(*str)
@logger.debug(str)
end
end
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