waflib/Tools/flex.py

   1 #! /usr/bin/env python
   2 # encoding: utf-8
   3 # WARNING! Do not edit! http://waf.googlecode.com/git/docs/wafbook/single.html#_obtaining_the_waf_file
   4
   5 import waflib.TaskGen,os,re
   6 def decide_ext(self,node):
   7         if'cxx'in self.features:
   8                 return['.lex.cc']
   9         return['.lex.c']
  10 def flexfun(tsk):
  11         env=tsk.env
  12         bld=tsk.generator.bld
  13         wd=bld.variant_dir
  14         def to_list(xx):
  15                 if isinstance(xx,str):return[xx]
  16                 return xx
  17         tsk.last_cmd=lst=[]
  18         lst.extend(to_list(env['FLEX']))
  19         lst.extend(to_list(env['FLEXFLAGS']))
  20         inputs=[a.path_from(bld.bldnode)for a in tsk.inputs]
  21         if env.FLEX_MSYS:
  22                 inputs=[x.replace(os.sep,'/')for x in inputs]
  23         lst.extend(inputs)
  24         lst=[x for x in lst if x]
  25         txt=bld.cmd_and_log(lst,cwd=wd,env=env.env or None,quiet=0)
  26         tsk.outputs[0].write(txt.replace('\r\n','\n').replace('\r','\n'))
  27 waflib.TaskGen.declare_chain(name='flex',rule=flexfun,ext_in='.l',decider=decide_ext,)
  28 def configure(conf):
  29         conf.find_program('flex',var='FLEX')
  30         conf.env.FLEXFLAGS=['-t']
  31         if re.search(r"\\msys\\[0-9.]+\\bin\\flex.exe$",conf.env.FLEX):
  32                 conf.env.FLEX_MSYS=True