69 lines
2.1 KiB
Python
69 lines
2.1 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import contextlib
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from octane.util import subprocess
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def patch_apply(cwd, patches, revert=False):
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for path in patches:
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with open(path, 'rb') as patch:
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try:
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subprocess.call(["patch", "-R", "-p1"], stdin=patch, cwd=cwd)
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except subprocess.CalledProcessError:
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if not revert:
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pass
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else:
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raise
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if not revert:
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patch.seek(0)
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subprocess.call(["patch", "-N", "-p1"], stdin=patch, cwd=cwd)
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@contextlib.contextmanager
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def applied_patch(cwd, *patches):
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patch_apply(cwd, patches)
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try:
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yield
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finally:
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patch_apply(cwd, patches[::-1], revert=True)
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def get_filenames_from_single_patch(patch):
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"""Get all files touched by a patch"""
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result = []
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with open(patch) as p:
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for line in p:
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if line.startswith('+++'):
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fname = line[4:].strip()
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if fname.startswith('b/'):
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fname = fname[2:]
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tab_pos = fname.find('\t')
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if tab_pos > 0:
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fname = fname[:tab_pos]
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result.append(fname)
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return result
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def get_filenames_from_patches(prefix, *patches):
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files = []
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if not prefix.endswith("/"):
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prefix = "{0}/".format(prefix)
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for patch in patches:
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for file_name in get_filenames_from_single_patch(patch):
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if file_name.startswith(prefix):
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files.append(file_name[len(prefix):])
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else:
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files.append(file_name)
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return files
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