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# Copyright 2013-2014 Ben Longbons <b.r.longbons@gmail.com>
#
# This file is part of attoconf.
#
# attoconf is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# attoconf is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with attoconf. If not, see <http://www.gnu.org/licenses/>.
import os
import sys
from ..classy import ClassyProject
class TemplateHook(object):
__slots__ = ('outfiles')
def __init__(self, outfiles):
self.outfiles = outfiles
def __call__(self, build):
build.vars['SRC_DIR'] = build.relative_source()
unseen = set(build.project.order)
if None in unseen:
unseen.remove(None)
for outfile in self.outfiles:
infile = outfile + '.in'
print('Generating %s from %s' % (outfile, infile))
# by replacing all instances of @VARIABLE@ with the value
slurpee = open(os.path.join(build.project.srcdir, infile)).read()
for var in build.project.order:
if var is None:
continue
val = build.vars[var]
key = '@' + var + '@'
if key not in slurpee:
continue
if var in unseen:
unseen.remove(var)
slurpee = slurpee.replace(key, str(val))
with open(os.path.join(build.builddir, outfile), 'w') as out:
out.write(slurpee)
if unseen:
print('WARNING: variables not used:')
print(' ' + '\n '.join(unseen))
# lone @s may legitimately appear in the makefile.
# paired @s, which would be a forgotten subst, will be obvious.
class Templates(ClassyProject):
''' Post hook to generate output files from *.in templates
'''
__slots__ = ()
_merge_slots_ = ('template_files')
# this class didn't exist in attoconf < 0.7, no need for compatibility
def __init__(self, template_files, **kwargs):
super(Templates, self).__init__(**kwargs)
self.template_files = template_files
def post(self):
super(Templates, self).post()
if 'SRC_DIR' in self.order:
sys.exit('ERROR: Incompatible generator hooks!')
self.order.insert(0, 'SRC_DIR')
self.checks.append(TemplateHook(self.template_files))
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