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Diffstat (limited to 'third_party/aom/tools/diff.py')
| -rw-r--r-- | third_party/aom/tools/diff.py | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/third_party/aom/tools/diff.py b/third_party/aom/tools/diff.py deleted file mode 100644 index bac6aabdc..000000000 --- a/third_party/aom/tools/diff.py +++ /dev/null @@ -1,132 +0,0 @@ -#!/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. -## -"""Classes for representing diff pieces.""" - -__author__ = "jkoleszar@google.com" - -import re - - -class DiffLines(object): - """A container for one half of a diff.""" - - def __init__(self, filename, offset, length): - self.filename = filename - self.offset = offset - self.length = length - self.lines = [] - self.delta_line_nums = [] - - def Append(self, line): - l = len(self.lines) - if line[0] != " ": - self.delta_line_nums.append(self.offset + l) - self.lines.append(line[1:]) - assert l+1 <= self.length - - def Complete(self): - return len(self.lines) == self.length - - def __contains__(self, item): - return item >= self.offset and item <= self.offset + self.length - 1 - - -class DiffHunk(object): - """A container for one diff hunk, consisting of two DiffLines.""" - - def __init__(self, header, file_a, file_b, start_a, len_a, start_b, len_b): - self.header = header - self.left = DiffLines(file_a, start_a, len_a) - self.right = DiffLines(file_b, start_b, len_b) - self.lines = [] - - def Append(self, line): - """Adds a line to the DiffHunk and its DiffLines children.""" - if line[0] == "-": - self.left.Append(line) - elif line[0] == "+": - self.right.Append(line) - elif line[0] == " ": - self.left.Append(line) - self.right.Append(line) - elif line[0] == "\\": - # Ignore newline messages from git diff. - pass - else: - assert False, ("Unrecognized character at start of diff line " - "%r" % line[0]) - self.lines.append(line) - - def Complete(self): - return self.left.Complete() and self.right.Complete() - - def __repr__(self): - return "DiffHunk(%s, %s, len %d)" % ( - self.left.filename, self.right.filename, - max(self.left.length, self.right.length)) - - -def ParseDiffHunks(stream): - """Walk a file-like object, yielding DiffHunks as they're parsed.""" - - file_regex = re.compile(r"(\+\+\+|---) (\S+)") - range_regex = re.compile(r"@@ -(\d+)(,(\d+))? \+(\d+)(,(\d+))?") - hunk = None - while True: - line = stream.readline() - if not line: - break - - if hunk is None: - # Parse file names - diff_file = file_regex.match(line) - if diff_file: - if line.startswith("---"): - a_line = line - a = diff_file.group(2) - continue - if line.startswith("+++"): - b_line = line - b = diff_file.group(2) - continue - - # Parse offset/lengths - diffrange = range_regex.match(line) - if diffrange: - if diffrange.group(2): - start_a = int(diffrange.group(1)) - len_a = int(diffrange.group(3)) - else: - start_a = 1 - len_a = int(diffrange.group(1)) - - if diffrange.group(5): - start_b = int(diffrange.group(4)) - len_b = int(diffrange.group(6)) - else: - start_b = 1 - len_b = int(diffrange.group(4)) - - header = [a_line, b_line, line] - hunk = DiffHunk(header, a, b, start_a, len_a, start_b, len_b) - else: - # Add the current line to the hunk - hunk.Append(line) - - # See if the whole hunk has been parsed. If so, yield it and prepare - # for the next hunk. - if hunk.Complete(): - yield hunk - hunk = None - - # Partial hunks are a parse error - assert hunk is None |