-#!/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.compat import argv_bytes
+from bup.io import byte_stream
from bup.helpers import handle_ctrl_c, log, saved_errors
def open_input(name):
- if name != '-':
- return open(name, 'r')
- else:
- return sys.stdin
+ if not name or name == b'-':
+ return byte_stream(sys.stdin)
+ return open(name, 'rb')
+
+
+def open_output(name):
+ if not name or name == b'-':
+ sys.stdout.flush()
+ return byte_stream(sys.stdout)
+ return open(name, 'wb')
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
"""
handle_ctrl_c()
o = options.Options(optspec)
-(opt, flags, remainder) = o.parse(['--paths', '--symlinks'] + sys.argv[1:])
+(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
+opt.file = argv_bytes(opt.file) if opt.file else None
action_count = sum([bool(x) for x in [opt.create, opt.list, opt.extract,
- opt.start_extract, opt.finish_extract]])
+ opt.start_extract, opt.finish_extract,
+ opt.edit]])
if action_count > 1:
- o.fatal("bup: only one action permitted: --create --list --extract")
+ 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 opt.file != '-':
- output_file = open(opt.file, 'w')
- else:
- output_file = sys.stdout
+ output_file = open_output(opt.file)
metadata.save_tree(output_file,
- remainder,
+ [argv_bytes(r) for r in remainder],
recurse=opt.recurse,
write_paths=opt.paths,
save_symlinks=opt.symlinks,
if len(remainder) > 0:
o.fatal("cannot specify paths for --list")
src = open_input(opt.file)
- metadata.display_archive(src)
+ metadata.display_archive(src, open_output(b'-'))
elif opt.start_extract:
if len(remainder) > 0:
o.fatal("cannot specify paths for --start-extract")
metadata.extract(src,
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(argv_bytes(path), 'rb')
+ 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 = b''
+ elif opt.set_user is not None:
+ m.user = argv_bytes(opt.set_user)
+
+ if unset_group:
+ m.group = b''
+ elif opt.set_group is not None:
+ m.group = argv_bytes(opt.set_group)
+
+ m.write(output_file)
+ finally:
+ f.close()
+
if saved_errors:
log('WARNING: %d errors encountered.\n' % len(saved_errors))