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import os.path
import re
from SCons.Script import Builder, Action, Scanner
def soelim(target, source, env):
"""
Interpolate files included in [gnt]roff source files using the
.so directive.
This behaves somewhat like the soelim(1) wrapper around groff, but
makes us independent of whether the actual underlying implementation
includes an soelim() command or the corresponding command-line option
to groff(1). The key behavioral difference is that this doesn't
recursively include .so files from the include file. Not yet, anyway.
"""
t = str(target[0])
s = str(source[0])
dir, f = os.path.split(s)
with open(t, 'w') as tfp, open(s, 'r') as sfp:
for line in sfp.readlines():
if line[:4] in ['.so ', "'so "]:
sofile = os.path.join(dir, line[4:-1])
with open(sofile, 'r') as f:
tfp.write(f.read())
else:
tfp.write(line)
def soscan(node, env, path):
c = node.get_text_contents()
return re.compile(r"^[\.']so\s+(\S+)", re.M).findall(c)
soelimbuilder = Builder(action = Action(soelim),
source_scanner = Scanner(soscan))
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