buildtools/wafsamba/configure_file.py

   1 # handle substitution of variables in .in files
   2
   3 import Build, sys, Logs
   4 from samba_utils import *
   5
   6 def subst_at_vars(task):
   7     '''substiture @VAR@ style variables in a file'''
   8
   9     env = task.env
  10     src = task.inputs[0].srcpath(env)
  11     tgt = task.outputs[0].bldpath(env)
  12
  13     f = open(src, 'r')
  14     s = f.read()
  15     f.close()
  16     # split on the vars
  17     a = re.split('(@\w+@)', s)
  18     out = []
  19     for v in a:
  20         if re.match('@\w+@', v):
  21             vname = v[1:-1]
  22             if not vname in task.env and vname.upper() in task.env:
  23                 vname = vname.upper()
  24             if not vname in task.env:
  25                 Logs.error("Unknown substitution %s in %s" % (v, task.name))
  26                 sys.exit(1)
  27             v = SUBST_VARS_RECURSIVE(task.env[vname], task.env)
  28         out.append(v)
  29     contents = ''.join(out)
  30     f = open(tgt, 'w')
  31     s = f.write(contents)
  32     f.close()
  33     return 0
  34
  35 def CONFIGURE_FILE(bld, in_file, **kwargs):
  36     '''configure file'''
  37
  38     base=os.path.basename(in_file)
  39     t = bld.SAMBA_GENERATOR('INFILE_%s' % base,
  40                             rule = subst_at_vars,
  41                             source = in_file + '.in',
  42                             target = in_file,
  43                             vars = kwargs)
  44 Build.BuildContext.CONFIGURE_FILE = CONFIGURE_FILE