site_scons/soe_utils.py

   1 import os.path
   2 import re
   3
   4 from SCons.Script import Builder, Action, Scanner
   5
   6 def soelim(target, source, env):
   7     """
   8     Interpolate files included in [gnt]roff source files using the
   9     .so directive.
  10
  11     This behaves somewhat like the soelim(1) wrapper around groff, but
  12     makes us independent of whether the actual underlying implementation
  13     includes an soelim() command or the corresponding command-line option
  14     to groff(1).  The key behavioral difference is that this doesn't
  15     recursively include .so files from the include file.  Not yet, anyway.
  16     """
  17     t = str(target[0])
  18     s = str(source[0])
  19     dir, f = os.path.split(s)
  20     with open(t, 'w') as tfp, open(s, 'r') as sfp:
  21         for line in sfp.readlines():
  22             if line[:4] in ['.so ', "'so "]:
  23                 sofile = os.path.join(dir, line[4:-1])
  24                 with open(sofile, 'r') as f:
  25                     tfp.write(f.read())
  26             else:
  27                 tfp.write(line)
  28
  29 def soscan(node, env, path):
  30     c = node.get_text_contents()
  31     return re.compile(r"^[.']so\s+(\S+)", re.M).findall(c)
  32
  33 soelimbuilder = Builder(action = Action(soelim),
  34                         source_scanner = Scanner(soscan))