filter-repo: start revamping the --help page

Signed-off-by: Elijah Newren <newren@gmail.com>
This commit is contained in:
Elijah Newren 2018-11-08 21:04:08 -08:00
parent 5f55960dfe
commit f813469ff8

View File

@ -1515,83 +1515,117 @@ class AppendFilter(argparse.Action):
setattr(namespace, self.dest, items)
def get_args():
parser = argparse.ArgumentParser(description='Rewrite repository history')
# Include usage in the summary, so we can put the description first
summary = '''Rewrite (or analyze) repository history
git-filter-repo destructively rewrites history (unless --analyze or --dry-run
are specified) according to specified rules. It refuses to do any rewriting
unless either run from a clean fresh clone, or --force was specified.
Basic Usage:
git-filter-repo --analyze
git-filter-repo [FILTER/RENAME/CONTROL OPTIONS]
See EXAMPLES section for details.
'''.rstrip()
# Provide a long helpful examples section
example_text = '''EXAMPLES
To get help:
git-filter-repo --help
'''
# Create the basic parser
parser = argparse.ArgumentParser(description=summary,
usage = argparse.SUPPRESS,
add_help = False,
epilog = example_text,
formatter_class=argparse.RawDescriptionHelpFormatter)
# FIXME: Need to special case all --* args that rev-list takes, or call
# git rev-parse ...
parser.add_argument('--analyze', action='store_true',
help='''Analyze repository history and create a report
that may be useful in determining what to
filter in a subsequent run.''')
parser.add_argument('--force', '-f', action='store_true',
help='''Rewrite history even if the current repo does not
look like a fresh clone.''')
analyze = parser.add_argument_group(title='Analysis')
analyze.add_argument('--analyze', action='store_true',
help='''Analyze repository history and create a
report that may be useful in determining
what to filter in a subsequent run. Will
not modify your repo.''')
path_group = parser.add_argument_group(title='Filtering based on paths')
path_group.add_argument('--invert-paths', action='store_false',
dest='inclusive',
help='''Invert the selection of files from the
specified --path-{match,glob,regex} options
below, i.e. only select files matching none
of those options.''')
refs = parser.add_argument_group(title='Git References (positional args)')
refs.add_argument('refs', nargs='*',
help='''git refs (branches, tags, etc.) to rewrite,
e.g. 'master v2.1.0 v0.5.0'. Special rev-list
options, such as --branches, --tags, --all, --glob,
or --exclude are allowed. [default: --all]. To
avoid mixing new history with old, any references
not specified will be deleted.''')
path_group.add_argument('--path-match', '--path', metavar='DIR_OR_FILE',
action=AppendFilter, dest='path_changes',
help='''Exact paths (files or directories) to include
in filtered history. Multiple --path
options can be specified to get a union of
paths.''')
path_group.add_argument('--path-glob', metavar='GLOB',
action=AppendFilter, dest='path_changes',
help='''Glob of paths to include in filtered
history. Multiple --path-glob options can
be specified to get a union of paths.''')
path_group.add_argument('--path-regex', metavar='REGEX',
action=AppendFilter, dest='path_changes',
help='''Regex of paths to include in filtered
history. Multiple --path-regex options can
be specified to get a union of paths''')
path = parser.add_argument_group(title='Filtering based on paths')
path.add_argument('--invert-paths', action='store_false',
dest='inclusive',
help='''Invert the selection of files from the specified
--path-{match,glob,regex} options below, i.e. only
select files matching none of those options.''')
rename_group = parser.add_argument_group(title='Renaming based on paths')
rename_group.add_argument('--path-rename', '--path-rename-prefix',
metavar='OLD_NAME:NEW_NAME',
action=AppendFilter, dest='path_changes',
help='''Prefix to rename; if filename starts with
OLD_NAME, replace that with NEW_NAME.
Multiple --path-rename options can be
specified.''')
path.add_argument('--path-match', '--path', metavar='DIR_OR_FILE',
action=AppendFilter, dest='path_changes',
help='''Exact paths (files or directories) to include in
filtered history. Multiple --path options can be
specified to get a union of paths.''')
path.add_argument('--path-glob', metavar='GLOB',
action=AppendFilter, dest='path_changes',
help='''Glob of paths to include in filtered history.
Multiple --path-glob options can be specified to
get a union of paths.''')
path.add_argument('--path-regex', metavar='REGEX',
action=AppendFilter, dest='path_changes',
help='''Regex of paths to include in filtered history.
Multiple --path-regex options can be specified to
get a union of paths''')
parser.add_argument('--dry-run', action='store_true',
help='''Do not change the repository. Run `git
fast-export` and filter its output, and save
both the original and the filtered version for
comparison. Some filtering of empty commits
may not occur due to inability to query the
fast-import backend.''')
parser.add_argument('--debug', action='store_true',
help='''Print additional information about operations
being performed and commands being run. When
used together with --dry-run, also show extra
information about what would be run.''')
parser.add_argument('--stdin', action='store_true',
help='''Instead of running `git fast-export` and filtering
its output, filter the fast-export stream from
stdin.''')
rename = parser.add_argument_group(title='Renaming based on paths')
rename.add_argument('--path-rename', '--path-rename-prefix',
metavar='OLD_NAME:NEW_NAME',
action=AppendFilter, dest='path_changes',
help='''Prefix to rename; if filename starts with
OLD_NAME, replace that with NEW_NAME. Multiple
--path-rename options can be specified.''')
misc = parser.add_argument_group(title='Miscellaneous options')
misc.add_argument('--help', '-h', action='store_true',
help='''Show this help message and exit.''')
misc.add_argument('--force', '-f', action='store_true',
help='''Rewrite history even if the current repo does not
look like a fresh clone.''')
parser.add_argument('--quiet', action='store_true',
help='''Pass --quiet to other git commands called''')
misc.add_argument('--dry-run', action='store_true',
help='''Do not change the repository. Run `git
fast-export` and filter its output, and save both
the original and the filtered version for
comparison. Some filtering of empty commits may
not occur due to inability to query the fast-import
backend.''')
misc.add_argument('--debug', action='store_true',
help='''Print additional information about operations being
performed and commands being run. When used
together with --dry-run, also show extra
information about what would be run.''')
misc.add_argument('--stdin', action='store_true',
help='''Instead of running `git fast-export` and filtering
its output, filter the fast-export stream from
stdin.''')
misc.add_argument('--quiet', action='store_true',
help='''Pass --quiet to other git commands called''')
parser.add_argument('revisions', nargs='*',
help='''Branches/tags/refs to rewrite. Special rev-list
options, such as --branches, --tags, --all,
--glob, or --exclude are allowed. [default:
--all]''')
if len(sys.argv) == 1:
parser.print_usage()
raise SystemExit("No arguments specified.")
args = parser.parse_args()
if not args.revisions:
args.revisions = ['--all']
if args.help:
parser.print_help()
raise SystemExit()
if not args.refs:
args.refs = ['--all']
if args.analyze and args.path_changes:
raise SystemExit("Error: --analyze is incompatible with --path* flags; "
"it's a read-only operation.")
@ -1763,7 +1797,7 @@ def gather_data(args):
'--always-show-modify-after-rename',
'--signed-tags=strip',
'--tag-of-filtered-object=rewrite',
'--use-done-feature'] + args.revisions
'--use-done-feature'] + args.refs
fep = subprocess.Popen(fep_cmd, stdout=subprocess.PIPE)
input = fep.stdout
output = open(os.devnull, 'w')
@ -2134,7 +2168,7 @@ def run_fast_filter():
'--signed-tags=strip',
'--tag-of-filtered-object=rewrite',
'--no-data',
'--use-done-feature'] + args.revisions
'--use-done-feature'] + args.refs
fep = subprocess.Popen(fep_cmd, stdout=subprocess.PIPE)
input = fep.stdout
if args.dry_run or args.debug: