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authorMatt A. Tobin <email@mattatobin.com>2020-04-07 23:30:51 -0400
committerwolfbeast <mcwerewolf@wolfbeast.com>2020-04-14 13:26:42 +0200
commit277f2116b6660e9bbe7f5d67524be57eceb49b8b (patch)
tree4595f7cc71418f71b9a97dfaeb03a30aa60f336a /third_party/aom/tools/intersect-diffs.py
parentd270404436f6e84ffa3b92af537ac721bf10d66e (diff)
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Move aom source to a sub-directory under media/libaom
There is no damned reason to treat this differently than any other media lib given its license and there never was.
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diff --git a/third_party/aom/tools/intersect-diffs.py b/third_party/aom/tools/intersect-diffs.py
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-#!/usr/bin/env python
-##
-## Copyright (c) 2016, Alliance for Open Media. All rights reserved
-##
-## This source code is subject to the terms of the BSD 2 Clause License and
-## the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
-## was not distributed with this source code in the LICENSE file, you can
-## obtain it at www.aomedia.org/license/software. If the Alliance for Open
-## Media Patent License 1.0 was not distributed with this source code in the
-## PATENTS file, you can obtain it at www.aomedia.org/license/patent.
-##
-"""Calculates the "intersection" of two unified diffs.
-
-Given two diffs, A and B, it finds all hunks in B that had non-context lines
-in A and prints them to stdout. This is useful to determine the hunks in B that
-are relevant to A. The resulting file can be applied with patch(1) on top of A.
-"""
-
-__author__ = "jkoleszar@google.com"
-
-import sys
-
-import diff
-
-
-def FormatDiffHunks(hunks):
- """Re-serialize a list of DiffHunks."""
- r = []
- last_header = None
- for hunk in hunks:
- this_header = hunk.header[0:2]
- if last_header != this_header:
- r.extend(hunk.header)
- last_header = this_header
- else:
- r.extend(hunk.header[2])
- r.extend(hunk.lines)
- r.append("\n")
- return "".join(r)
-
-
-def ZipHunks(rhs_hunks, lhs_hunks):
- """Join two hunk lists on filename."""
- for rhs_hunk in rhs_hunks:
- rhs_file = rhs_hunk.right.filename.split("/")[1:]
-
- for lhs_hunk in lhs_hunks:
- lhs_file = lhs_hunk.left.filename.split("/")[1:]
- if lhs_file != rhs_file:
- continue
- yield (rhs_hunk, lhs_hunk)
-
-
-def main():
- old_hunks = [x for x in diff.ParseDiffHunks(open(sys.argv[1], "r"))]
- new_hunks = [x for x in diff.ParseDiffHunks(open(sys.argv[2], "r"))]
- out_hunks = []
-
- # Join the right hand side of the older diff with the left hand side of the
- # newer diff.
- for old_hunk, new_hunk in ZipHunks(old_hunks, new_hunks):
- if new_hunk in out_hunks:
- continue
- old_lines = old_hunk.right
- new_lines = new_hunk.left
-
- # Determine if this hunk overlaps any non-context line from the other
- for i in old_lines.delta_line_nums:
- if i in new_lines:
- out_hunks.append(new_hunk)
- break
-
- if out_hunks:
- print FormatDiffHunks(out_hunks)
- sys.exit(1)
-
-if __name__ == "__main__":
- main()