48 lines
1.2 KiB
Python
48 lines
1.2 KiB
Python
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# -*- python -*-
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"""
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File-Content Substitution builder for SCons
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"""
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__author__ = "Hartmut Goebel <h.goebel@crazy-compilers.com>"
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import os, re
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import SCons
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def _action(target, source, env):
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def _substitute(matchobj, env=env):
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sym = matchobj.group(1)
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try:
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return env.subst(str(env[sym]))
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except: # TypeError: # sym not a string
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txt = matchobj.group(0) # the string matched
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print 'Not substituting', txt
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return txt
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delim = re.escape(env['FILESUBSTDELIM'])
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# compile a non-greedy pattern
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subst_pattern = re.compile('%s(.*?)%s' % (delim, delim))
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for t, s in zip(target, source):
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t = str(t)
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s = s.rstr()
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text = open(s, 'rb').read()
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text = subst_pattern.sub(_substitute, text)
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open(t, 'wb').write(text)
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os.chmod(t, os.stat(s)[0])
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return None
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def _strfunc(target, source, env):
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return "generating '%s' from '%s'" % (target[0], source[0])
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_builder = SCons.Builder.Builder(
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action = SCons.Action.Action(_action, _strfunc),
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src_suffix = '.in',
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)
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def generate(env):
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env['BUILDERS']['FileSubst'] = _builder
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env['FILESUBSTDELIM'] = '@'
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def exists(env):
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return 1
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