diff options
Diffstat (limited to 'clang')
| -rwxr-xr-x | clang/tools/clang-format/git-clang-format | 147 |
1 files changed, 97 insertions, 50 deletions
diff --git a/clang/tools/clang-format/git-clang-format b/clang/tools/clang-format/git-clang-format index 860548e71eb..ffa14368b66 100755 --- a/clang/tools/clang-format/git-clang-format +++ b/clang/tools/clang-format/git-clang-format @@ -32,12 +32,15 @@ import re import subprocess import sys -usage = 'git clang-format [OPTIONS] [<commit>] [--] [<file>...]' +usage = 'git clang-format [OPTIONS] [<commit>] [<commit>] [--] [<file>...]' desc = ''' -Run clang-format on all lines that differ between the working directory -and <commit>, which defaults to HEAD. Changes are only applied to the working -directory. +If zero or one commits are given, run clang-format on all lines that differ +between the working directory and <commit>, which defaults to HEAD. Changes are +only applied to the working directory. + +If two commits are given (requires --diff), run clang-format on all lines in the +second <commit> that differ from the first <commit>. The following git-config settings set the default of the corresponding option: clangFormat.binary @@ -121,8 +124,14 @@ def main(): opts.verbose -= opts.quiet del opts.quiet - commit, files = interpret_args(opts.args, dash_dash, opts.commit) - changed_lines = compute_diff_and_extract_lines(commit, files) + commits, files = interpret_args(opts.args, dash_dash, opts.commit) + if len(commits) > 1: + if not opts.diff: + die('--diff is required when two commits are given') + else: + if len(commits) > 2: + die('at most two commits allowed; %d given' % len(commits)) + changed_lines = compute_diff_and_extract_lines(commits, files) if opts.verbose >= 1: ignored_files = set(changed_lines) filter_by_extension(changed_lines, opts.extensions.lower().split(',')) @@ -142,10 +151,17 @@ def main(): # The computed diff outputs absolute paths, so we must cd before accessing # those files. cd_to_toplevel() - old_tree = create_tree_from_workdir(changed_lines) - new_tree = run_clang_format_and_save_to_tree(changed_lines, - binary=opts.binary, - style=opts.style) + if len(commits) > 1: + old_tree = commits[1] + new_tree = run_clang_format_and_save_to_tree(changed_lines, + revision=commits[1], + binary=opts.binary, + style=opts.style) + else: + old_tree = create_tree_from_workdir(changed_lines) + new_tree = run_clang_format_and_save_to_tree(changed_lines, + binary=opts.binary, + style=opts.style) if opts.verbose >= 1: print 'old tree:', old_tree print 'new tree:', new_tree @@ -182,40 +198,41 @@ def load_git_config(non_string_options=None): def interpret_args(args, dash_dash, default_commit): - """Interpret `args` as "[commit] [--] [files...]" and return (commit, files). + """Interpret `args` as "[commits] [--] [files]" and return (commits, files). It is assumed that "--" and everything that follows has been removed from args and placed in `dash_dash`. - If "--" is present (i.e., `dash_dash` is non-empty), the argument to its - left (if present) is taken as commit. Otherwise, the first argument is - checked if it is a commit or a file. If commit is not given, - `default_commit` is used.""" + If "--" is present (i.e., `dash_dash` is non-empty), the arguments to its + left (if present) are taken as commits. Otherwise, the arguments are checked + from left to right if they are commits or files. If commits are not given, + a list with `default_commit` is used.""" if dash_dash: if len(args) == 0: - commit = default_commit - elif len(args) > 1: - die('at most one commit allowed; %d given' % len(args)) + commits = [default_commit] else: - commit = args[0] - object_type = get_object_type(commit) - if object_type not in ('commit', 'tag'): - if object_type is None: - die("'%s' is not a commit" % commit) - else: - die("'%s' is a %s, but a commit was expected" % (commit, object_type)) + commits = args + for commit in commits: + object_type = get_object_type(commit) + if object_type not in ('commit', 'tag'): + if object_type is None: + die("'%s' is not a commit" % commit) + else: + die("'%s' is a %s, but a commit was expected" % (commit, object_type)) files = dash_dash[1:] elif args: - if disambiguate_revision(args[0]): - commit = args[0] - files = args[1:] - else: - commit = default_commit - files = args + commits = [] + while args: + if not disambiguate_revision(args[0]): + break + commits.append(args.pop(0)) + if not commits: + commits = [default_commit] + files = args else: - commit = default_commit + commits = [default_commit] files = [] - return commit, files + return commits, files def disambiguate_revision(value): @@ -243,9 +260,9 @@ def get_object_type(value): return stdout.strip() -def compute_diff_and_extract_lines(commit, files): +def compute_diff_and_extract_lines(commits, files): """Calls compute_diff() followed by extract_lines().""" - diff_process = compute_diff(commit, files) + diff_process = compute_diff(commits, files) changed_lines = extract_lines(diff_process.stdout) diff_process.stdout.close() diff_process.wait() @@ -255,13 +272,17 @@ def compute_diff_and_extract_lines(commit, files): return changed_lines -def compute_diff(commit, files): - """Return a subprocess object producing the diff from `commit`. +def compute_diff(commits, files): + """Return a subprocess object producing the diff from `commits`. The return value's `stdin` file object will produce a patch with the - differences between the working directory and `commit`, filtered on `files` - (if non-empty). Zero context lines are used in the patch.""" - cmd = ['git', 'diff-index', '-p', '-U0', commit, '--'] + differences between the working directory and the first commit if a single + one was specified, or the difference between both specified commits, filtered + on `files` (if non-empty). Zero context lines are used in the patch.""" + git_tool = 'diff-index' + if len(commits) > 1: + git_tool = 'diff-tree' + cmd = ['git', git_tool, '-p', '-U0'] + commits + ['--'] cmd.extend(files) p = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE) p.stdin.close() @@ -318,15 +339,17 @@ def create_tree_from_workdir(filenames): return create_tree(filenames, '--stdin') -def run_clang_format_and_save_to_tree(changed_lines, binary='clang-format', - style=None): +def run_clang_format_and_save_to_tree(changed_lines, revision=None, + binary='clang-format', style=None): """Run clang-format on each file and save the result to a git tree. Returns the object ID (SHA-1) of the created tree.""" def index_info_generator(): for filename, line_ranges in changed_lines.iteritems(): mode = oct(os.stat(filename).st_mode) - blob_id = clang_format_to_blob(filename, line_ranges, binary=binary, + blob_id = clang_format_to_blob(filename, line_ranges, + revision=revision, + binary=binary, style=style) yield '%s %s\t%s' % (mode, blob_id, filename) return create_tree(index_info_generator(), '--index-info') @@ -352,26 +375,42 @@ def create_tree(input_lines, mode): return tree_id -def clang_format_to_blob(filename, line_ranges, binary='clang-format', - style=None): +def clang_format_to_blob(filename, line_ranges, revision=None, + binary='clang-format', style=None): """Run clang-format on the given file and save the result to a git blob. + Runs on the file in `revision` if not None, or on the file in the working + directory if `revision` is None. + Returns the object ID (SHA-1) of the created blob.""" - clang_format_cmd = [binary, filename] + clang_format_cmd = [binary] if style: clang_format_cmd.extend(['-style='+style]) clang_format_cmd.extend([ '-lines=%s:%s' % (start_line, start_line+line_count-1) for start_line, line_count in line_ranges]) + if revision: + clang_format_cmd.extend(['-assume-filename='+filename]) + git_show_cmd = ['git', 'cat-file', 'blob', '%s:%s' % (revision, filename)] + git_show = subprocess.Popen(git_show_cmd, stdin=subprocess.PIPE, + stdout=subprocess.PIPE) + git_show.stdin.close() + clang_format_stdin = git_show.stdout + else: + clang_format_cmd.extend([filename]) + git_show = None + clang_format_stdin = subprocess.PIPE try: - clang_format = subprocess.Popen(clang_format_cmd, stdin=subprocess.PIPE, + clang_format = subprocess.Popen(clang_format_cmd, stdin=clang_format_stdin, stdout=subprocess.PIPE) + if clang_format_stdin == subprocess.PIPE: + clang_format_stdin = clang_format.stdin except OSError as e: if e.errno == errno.ENOENT: die('cannot find executable "%s"' % binary) else: raise - clang_format.stdin.close() + clang_format_stdin.close() hash_object_cmd = ['git', 'hash-object', '-w', '--path='+filename, '--stdin'] hash_object = subprocess.Popen(hash_object_cmd, stdin=clang_format.stdout, stdout=subprocess.PIPE) @@ -381,6 +420,8 @@ def clang_format_to_blob(filename, line_ranges, binary='clang-format', die('`%s` failed' % ' '.join(hash_object_cmd)) if clang_format.wait() != 0: die('`%s` failed' % ' '.join(clang_format_cmd)) + if git_show and git_show.wait() != 0: + die('`%s` failed' % ' '.join(git_show_cmd)) return stdout.rstrip('\r\n') @@ -419,7 +460,12 @@ def print_diff(old_tree, new_tree): # We use the porcelain 'diff' and not plumbing 'diff-tree' because the output # is expected to be viewed by the user, and only the former does nice things # like color and pagination. - subprocess.check_call(['git', 'diff', old_tree, new_tree, '--']) + # + # We also only print modified files since `new_tree` only contains the files + # that were modified, so unmodified files would show as deleted without the + # filter. + subprocess.check_call(['git', 'diff', '--diff-filter=M', old_tree, new_tree, + '--']) def apply_changes(old_tree, new_tree, force=False, patch_mode=False): @@ -427,7 +473,8 @@ def apply_changes(old_tree, new_tree, force=False, patch_mode=False): Bails if there are local changes in those files and not `force`. If `patch_mode`, runs `git checkout --patch` to select hunks interactively.""" - changed_files = run('git', 'diff-tree', '-r', '-z', '--name-only', old_tree, + changed_files = run('git', 'diff-tree', '--diff-filter=M', '-r', '-z', + '--name-only', old_tree, new_tree).rstrip('\0').split('\0') if not force: unstaged_files = run('git', 'diff-files', '--name-status', *changed_files) |
