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filter-repo: implement --use-base-name

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This new flag allows people to filter files solely based on their
basename rather than on their full path within the repo, making it
easier to e.g. remove all .DS_Store files or keep all README.md
files.

Signed-off-by: Elijah Newren <newren@gmail.com>
This commit is contained in:
Elijah Newren 2019-05-17 11:01:24 -07:00
parent fd0b58ecdc
commit 092d0163d4
2 changed files with 38 additions and 6 deletions
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21
git-filter-repo
View File

@ -1976,6 +1976,9 @@ class FilteringOptions(object):
help=_("Regex of paths to include in filtered history. Multiple "
"--path-regex options can be specified to get a union of "
"paths"))
path.add_argument('--use-base-name', action='store_true',
help=_("Match on file base name instead of full path from the top "
"of the repo. Incompatible with --path-rename."))
rename = parser.add_argument_group(title=_("Renaming based on paths "
"(see also --filename-callback)"))
@ -2153,6 +2156,11 @@ class FilteringOptions(object):
# achieve that is setting args.inclusive to False.
if not any(x[0] == 'filter' for x in args.path_changes):
args.inclusive = False
# Also check for incompatible --use-base-name and --path-rename flags.
if args.use_base_name:
if any(x[0] == 'rename' for x in args.path_changes):
raise SystemExit(_("Error: --use-base-name and --path-rename are "
"incompatible."))
# Also throw in a sanity check on git version here;
# PERF: remove this check once new enough git versions are common
p = subprocess.Popen('git diff-tree -h'.split(),
@ -2918,8 +2926,11 @@ class RepoFilter(object):
return True
return False
def newname(path_changes, pathname, filtering_is_inclusive):
def newname(path_changes, pathname, use_base_name, filtering_is_inclusive):
wanted = False
full_pathname = pathname
if use_base_name:
pathname = os.path.basename(pathname)
for (mod_type, match_type, path_exp) in path_changes:
if mod_type == 'filter' and not wanted:
assert match_type in ('match', 'glob', 'regex')
@ -2932,9 +2943,9 @@ class RepoFilter(object):
elif mod_type == 'rename':
old_exp, new_exp = path_exp.split(b':')
assert match_type in ('prefix',)
if match_type == 'prefix' and pathname.startswith(old_exp):
pathname = pathname.replace(old_exp, new_exp, 1)
return pathname if (wanted == filtering_is_inclusive) else None
if match_type == 'prefix' and full_pathname.startswith(old_exp):
full_pathname = full_pathname.replace(old_exp, new_exp, 1)
return full_pathname if (wanted == filtering_is_inclusive) else None
# Change the commit message according to callback
if self._message_callback:
@ -2974,7 +2985,7 @@ class RepoFilter(object):
change.filename = self._newnames[change.filename]
else:
change.filename = newname(args.path_changes, change.filename,
args.inclusive)
args.use_base_name, args.inclusive)
if self._filename_callback:
change.filename = self._filename_callback(change.filename)
self._newnames[change.filename] = change.filename

23
t/t9390-filter-repo.sh
View File

@ -232,6 +232,24 @@ test_expect_success '--to-subdirectory-filter' '
)
'
test_expect_success '--use-base-name' '
(
git clone file://"$(pwd)"/metasyntactic use_base_name &&
cd use_base_name &&
git filter-repo --path small --path important --use-base-name &&
git cat-file --batch-check --batch-all-objects >all-objs &&
test_line_count = 10 all-objs &&
git log --format=%n --name-only | sort | uniq >filenames &&
test_line_count = 3 filenames &&
grep ^numbers/small$ filenames &&
grep ^words/important$ filenames &&
test $(git cat-file -t v1.0) = commit &&
test $(git cat-file -t v1.1) = tag &&
test $(git cat-file -t v2.0) = commit &&
test $(git cat-file -t v3.0) = tag
)
'
test_expect_success 'refs/replace/ to skip a parent' '
(
git clone file://"$(pwd)"/metasyntactic replace_skip_ref &&
@ -837,7 +855,10 @@ test_expect_success 'other startup error cases and requests for help' '
test_i18ngrep ": --analyze is incompatible with --path" err &&
test_must_fail git filter-repo --analyze --stdin 2>err &&
test_i18ngrep ": --analyze is incompatible with --stdin" err
test_i18ngrep ": --analyze is incompatible with --stdin" err &&
test_must_fail git filter-repo --path-rename foo:bar --use-base-name 2>err &&
test_i18ngrep ": --use-base-name and --path-rename are incompatible" err
)
'