71004f8135
This change cleans the packages' intermediate files if their overlays changed between incremental builds. If two builds have different overlay, they will have different R classes, and so the jar files in the common intermediate dirs can not be shared. Therefore incremental build can't be applied. This change detects the overlay changes on package's base. If a package's overlay is different from the previous build, its common intermediate dir is nuked. This makes broader incremental builds possible. Change-Id: I368610ebbbbc85a80f9aecd714ab22cd78da7f12
92 lines
2.9 KiB
Python
Executable File
92 lines
2.9 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# Copyright (C) 2012 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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Prints to stdout the package names that have overlay changes between
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current_overlays.txt and previous_overlays.txt.
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Usage: diff_package_overlays.py <current_packages.txt> <current_overlays.txt> <previous_overlays.txt>
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current_packages.txt contains all package names separated by space in the current build.
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This script modfies current_packages.txt if necessary: if there is a package in
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previous_overlays.txt but absent from current_packages.txt, we copy that line
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from previous_overlays.txt over to current_packages.txt. Usually that means we
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just don't care that package in the current build (for example we are switching
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from a full build to a partial build with mm/mmm), and we should carry on the
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previous overlay config so current_overlays.txt always reflects the current
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status of the entire tree.
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Format of current_overlays.txt and previous_overlays.txt:
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<package_name> <resource_overlay> [resource_overlay ...]
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<package_name> <resource_overlay> [resource_overlay ...]
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...
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"""
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import sys
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def main(argv):
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if len(argv) != 4:
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print >> sys.stderr, __doc__
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sys.exit(1)
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f = open(argv[1])
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all_packages = set(f.read().split())
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f.close()
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def load_overlay_config(filename):
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f = open(filename)
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result = {}
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for line in f:
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line = line.strip()
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if not line or line.startswith("#"):
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continue
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words = line.split()
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result[words[0]] = " ".join(words[1:])
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f.close()
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return result
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current_overlays = load_overlay_config(argv[2])
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previous_overlays = load_overlay_config(argv[3])
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result = []
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carryon = []
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for p in current_overlays:
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if p not in previous_overlays:
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result.append(p)
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elif current_overlays[p] != previous_overlays[p]:
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result.append(p)
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for p in previous_overlays:
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if p not in current_overlays:
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if p in all_packages:
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# overlay changed
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result.append(p)
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else:
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# we don't build p in the current build.
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carryon.append(p)
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# Add carryon to the current overlay config file.
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if carryon:
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f = open(argv[2], "a")
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for p in carryon:
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f.write(p + " " + previous_overlays[p] + "\n")
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f.close()
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# Print out the package names that have overlay change.
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for r in result:
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print r
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if __name__ == "__main__":
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main(sys.argv)
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