From 271dd0603e4ddb63e1c7cc140459cb42fe13a2ac Mon Sep 17 00:00:00 2001 From: Daniel Jasper Date: Mon, 19 Jun 2017 07:30:04 +0000 Subject: clang-format: Add capability to format the diff on save in vim. With this patch, one can configure a BufWrite hook that will make the clang-format integration compute a diff of the current buffer with the file that's on disk and format all changed lines. This should create a zero-overhead auto-format solution that doesn't require the file to already be clang-format clean to avoid spurious diffs. Review: https://reviews.llvm.org/D32429 llvm-svn: 305665 --- clang/tools/clang-format/clang-format.py | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'clang/tools/clang-format/clang-format.py') diff --git a/clang/tools/clang-format/clang-format.py b/clang/tools/clang-format/clang-format.py index ae8a6ebf74e..2412566346f 100644 --- a/clang/tools/clang-format/clang-format.py +++ b/clang/tools/clang-format/clang-format.py @@ -63,8 +63,19 @@ def main(): # Determine range to format. if vim.eval('exists("l:lines")') == '1': lines = vim.eval('l:lines') + elif vim.eval('exists("l:formatdiff")') == '1': + with open(vim.current.buffer.name, 'r') as f: + ondisk = f.read().splitlines(); + sequence = difflib.SequenceMatcher(None, ondisk, vim.current.buffer) + lines = [] + for op in reversed(sequence.get_opcodes()): + if op[0] not in ['equal', 'delete']: + lines += ['-lines', '%s:%s' % (op[3] + 1, op[4])] + if lines == []: + return else: - lines = '%s:%s' % (vim.current.range.start + 1, vim.current.range.end + 1) + lines = ['-lines', '%s:%s' % (vim.current.range.start + 1, + vim.current.range.end + 1)] # Determine the cursor position. cursor = int(vim.eval('line2byte(line("."))+col(".")')) - 2 @@ -82,7 +93,7 @@ def main(): # Call formatter. command = [binary, '-style', style, '-cursor', str(cursor)] if lines != 'all': - command.extend(['-lines', lines]) + command += lines if fallback_style: command.extend(['-fallback-style', fallback_style]) if vim.current.buffer.name: -- cgit v1.2.3