-#!/usr/bin/env python
+#!/bin/sh
+"""": # -*-python-*-
+bup_python="$(dirname "$0")/bup-python" || exit $?
+exec "$bup_python" "$0" ${1+"$@"}
+"""
+# end of bup preamble
# Copyright (C) 2010 Rob Browning
#
# Public License as described in the bup LICENSE file.
# TODO: Add tar-like -C option.
-# TODO: Add tar-like -v support to --list.
+from __future__ import absolute_import
import sys
from bup import metadata
from bup import options
from bup.helpers import handle_ctrl_c, log, saved_errors
+
+def open_input(name):
+ if not name or name == '-':
+ return sys.stdin
+ return open(name, 'r')
+
+
+def open_output(name):
+ if not name or name == '-':
+ return sys.stdout
+ return open(name, 'w')
+
+
optspec = """
bup meta --create [OPTION ...] <PATH ...>
+bup meta --list [OPTION ...]
bup meta --extract [OPTION ...]
bup meta --start-extract [OPTION ...]
bup meta --finish-extract [OPTION ...]
+bup meta --edit [OPTION ...] <PATH ...>
--
c,create write metadata for PATHs to stdout (or --file)
t,list display metadata
x,extract perform --start-extract followed by --finish-extract
start-extract build tree matching metadata provided on standard input (or --file)
finish-extract finish applying standard input (or --file) metadata to filesystem
+edit alter metadata; write to stdout (or --file)
f,file= specify source or destination file
R,recurse recurse into subdirectories
xdev,one-file-system don't cross filesystem boundaries
-numeric-ids apply numeric IDs (user, group, etc.), not names, during restore
+numeric-ids apply numeric IDs (user, group, etc.) rather than names
symlinks handle symbolic links (default is true)
paths include paths in metadata (default is true)
+set-uid= set metadata uid (via --edit)
+set-gid= set metadata gid (via --edit)
+set-user= set metadata user (via --edit)
+unset-user remove metadata user (via --edit)
+set-group= set metadata group (via --edit)
+unset-group remove metadata group (via --edit)
v,verbose increase log output (can be used more than once)
q,quiet don't show progress meter
"""
-action = None
-target_filename = ''
-should_recurse = False
-restore_numeric_ids = False
-include_paths = True
-handle_symlinks = True
-xdev = False
-
handle_ctrl_c()
o = options.Options(optspec)
-(opt, flags, remainder) = o.parse(sys.argv[1:])
-
-for flag, value in flags:
- if flag == '--create' or flag == '-c':
- action = 'create'
- elif flag == '--list' or flag == '-t':
- action = 'list'
- elif flag == '--extract' or flag == '-x':
- action = 'extract'
- elif flag == '--start-extract':
- action = 'start-extract'
- elif flag == '--finish-extract':
- action = 'finish-extract'
- elif flag == '--file' or flag == '-f':
- target_filename = value
- elif flag == '--recurse' or flag == '-R':
- should_recurse = True
- elif flag == '--no-recurse':
- should_recurse = False
- elif flag in frozenset(['--xdev', '--one-file-system']):
- xdev = True
- elif flag in frozenset(['--no-xdev', '--no-one-file-system']):
- xdev = False
- elif flag == '--numeric-ids':
- restore_numeric_ids = True
- elif flag == '--no-numeric-ids':
- restore_numeric_ids = False
- elif flag == '--paths':
- include_paths = True
- elif flag == '--no-paths':
- include_paths = False
- elif flag == '--symlinks':
- handle_symlinks = True
- elif flag == '--no-symlinks':
- handle_symlinks = False
- elif flag == '--verbose' or flag == '-v':
- metadata.verbose += 1
- elif flag == '--quiet' or flag == '-q':
- metadata.verbose = 0
-
-if not action:
- o.fatal("no action specified")
-
-if action == 'create':
+(opt, flags, remainder) = o.parse(['--paths', '--symlinks', '--recurse']
+ + sys.argv[1:])
+
+opt.verbose = opt.verbose or 0
+opt.quiet = opt.quiet or 0
+metadata.verbose = opt.verbose - opt.quiet
+
+action_count = sum([bool(x) for x in [opt.create, opt.list, opt.extract,
+ opt.start_extract, opt.finish_extract,
+ opt.edit]])
+if action_count > 1:
+ o.fatal("bup: only one action permitted: --create --list --extract --edit")
+if action_count == 0:
+ o.fatal("bup: no action specified")
+
+if opt.create:
if len(remainder) < 1:
o.fatal("no paths specified for create")
- if target_filename != '-':
- output_file = open(target_filename, 'w')
- else:
- output_file = sys.stdout
+ output_file = open_output(opt.file)
metadata.save_tree(output_file,
remainder,
- recurse=should_recurse,
- write_paths=include_paths,
- save_symlinks=handle_symlinks,
- xdev=xdev)
-
-elif action == 'list':
+ recurse=opt.recurse,
+ write_paths=opt.paths,
+ save_symlinks=opt.symlinks,
+ xdev=opt.xdev)
+elif opt.list:
if len(remainder) > 0:
o.fatal("cannot specify paths for --list")
- if target_filename != '-':
- src = open(target_filename, 'r')
- else:
- src = sys.stdin
+ src = open_input(opt.file)
metadata.display_archive(src)
-
-elif action == 'start-extract':
+elif opt.start_extract:
if len(remainder) > 0:
o.fatal("cannot specify paths for --start-extract")
- if target_filename != '-':
- src = open(target_filename, 'r')
- else:
- src = sys.stdin
- metadata.start_extract(src, create_symlinks=handle_symlinks)
-
-elif action == 'finish-extract':
+ src = open_input(opt.file)
+ metadata.start_extract(src, create_symlinks=opt.symlinks)
+elif opt.finish_extract:
if len(remainder) > 0:
o.fatal("cannot specify paths for --finish-extract")
- if target_filename != '-':
- src = open(target_filename, 'r')
- else:
- src = sys.stdin
- num_ids = restore_numeric_ids
- metadata.finish_extract(src, restore_numeric_ids=num_ids)
-
-elif action == 'extract':
+ src = open_input(opt.file)
+ metadata.finish_extract(src, restore_numeric_ids=opt.numeric_ids)
+elif opt.extract:
if len(remainder) > 0:
o.fatal("cannot specify paths for --extract")
- if target_filename != '-':
- src = open(target_filename, 'r')
- else:
- src = sys.stdin
+ src = open_input(opt.file)
metadata.extract(src,
- restore_numeric_ids=restore_numeric_ids,
- create_symlinks=handle_symlinks)
+ restore_numeric_ids=opt.numeric_ids,
+ create_symlinks=opt.symlinks)
+elif opt.edit:
+ if len(remainder) < 1:
+ o.fatal("no paths specified for edit")
+ output_file = open_output(opt.file)
+
+ unset_user = False # True if --unset-user was the last relevant option.
+ unset_group = False # True if --unset-group was the last relevant option.
+ for flag in flags:
+ if flag[0] == '--set-user':
+ unset_user = False
+ elif flag[0] == '--unset-user':
+ unset_user = True
+ elif flag[0] == '--set-group':
+ unset_group = False
+ elif flag[0] == '--unset-group':
+ unset_group = True
+
+ for path in remainder:
+ f = open(path, 'r')
+ try:
+ for m in metadata._ArchiveIterator(f):
+ if opt.set_uid is not None:
+ try:
+ m.uid = int(opt.set_uid)
+ except ValueError:
+ o.fatal("uid must be an integer")
+
+ if opt.set_gid is not None:
+ try:
+ m.gid = int(opt.set_gid)
+ except ValueError:
+ o.fatal("gid must be an integer")
+
+ if unset_user:
+ m.user = ''
+ elif opt.set_user is not None:
+ m.user = opt.set_user
+
+ if unset_group:
+ m.group = ''
+ elif opt.set_group is not None:
+ m.group = opt.set_group
+
+ m.write(output_file)
+ finally:
+ f.close()
+
if saved_errors:
log('WARNING: %d errors encountered.\n' % len(saved_errors))
projects / bup.git / blobdiff