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#!/usr/bin/env python
# Copyright (c) 2011 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Rewrites paths in -I, -L and other option to be relative to a sysroot."""
import sys
import os
import optparse
REWRITE_PREFIX = ['-I',
'-idirafter',
'-imacros',
'-imultilib',
'-include',
'-iprefix',
'-iquote',
'-isystem',
'-L']
def RewritePath(path, opts):
"""Rewrites a path by stripping the prefix and prepending the sysroot."""
sysroot = opts.sysroot
prefix = opts.strip_prefix
if os.path.isabs(path) and not path.startswith(sysroot):
if path.startswith(prefix):
path = path[len(prefix):]
path = path.lstrip('/')
return os.path.join(sysroot, path)
else:
return path
def RewriteLine(line, opts):
"""Rewrites all the paths in recognized options."""
args = line.split()
count = len(args)
i = 0
while i < count:
for prefix in REWRITE_PREFIX:
# The option can be either in the form "-I /path/to/dir" or
# "-I/path/to/dir" so handle both.
if args[i] == prefix:
i += 1
try:
args[i] = RewritePath(args[i], opts)
except IndexError:
sys.stderr.write('Missing argument following %s\n' % prefix)
break
elif args[i].startswith(prefix):
args[i] = prefix + RewritePath(args[i][len(prefix):], opts)
i += 1
return ' '.join(args)
def main(argv):
parser = optparse.OptionParser()
parser.add_option('-s', '--sysroot', default='/', help='sysroot to prepend')
parser.add_option('-p', '--strip-prefix', default='', help='prefix to strip')
opts, args = parser.parse_args(argv[1:])
for line in sys.stdin.readlines():
line = RewriteLine(line.strip(), opts)
print line
return 0
if __name__ == '__main__':
sys.exit(main(sys.argv))
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