2 import sys, os, subprocess, signal, getopt
6 exepath = os.path.split(exe)[0] or '.'
7 exeprefix = os.path.split(os.path.abspath(exepath))[0]
9 # fix the PYTHONPATH to include our lib dir
10 if os.path.exists("%s/lib/bup/cmd/." % exeprefix):
11 # installed binary in /.../bin.
12 # eg. /usr/bin/bup means /usr/lib/bup/... is where our libraries are.
13 cmdpath = "%s/lib/bup/cmd" % exeprefix
14 libpath = "%s/lib/bup" % exeprefix
15 resourcepath = libpath
17 # running from the src directory without being installed first
18 cmdpath = os.path.join(exepath, 'cmd')
19 libpath = os.path.join(exepath, 'lib')
20 resourcepath = libpath
21 sys.path[:0] = [libpath]
22 os.environ['PYTHONPATH'] = libpath + ':' + os.environ.get('PYTHONPATH', '')
23 os.environ['BUP_MAIN_EXE'] = os.path.abspath(exe)
24 os.environ['BUP_RESOURCE_PATH'] = resourcepath
26 from bup.helpers import *
30 log('Usage: bup [-?|--help] [-d=BUP_DIR|--bup-dir=BUP_DIR] COMMAND [ARGS]'
33 ftp = 'Browse backup sets using an ftp-like client',
34 fsck = 'Check backup sets for damage and add redundancy information',
35 fuse = 'Mount your backup sets as a filesystem',
36 help = 'Print detailed help for the given command',
37 index = 'Create or display the index of files to back up',
38 join = 'Retrieve a file backed up using "bup split"',
39 ls = 'Browse the files in your backup sets',
40 midx = 'Index objects to speed up future backups',
41 save = 'Save files into a backup set (note: run "bup index" first)',
42 split = 'Split a single file into its own backup set',
43 web = 'Launch a web server to examine backup sets',
46 log('Common commands:\n')
47 for cmd,synopsis in sorted(common.items()):
48 log(' %-10s %s\n' % (cmd, synopsis))
51 log('Other available commands:\n')
53 for c in sorted(os.listdir(cmdpath) + os.listdir(exepath)):
54 if c.startswith('bup-') and c.find('.') < 0:
56 if cname not in common:
58 log(columnate(cmds, ' '))
61 log("See 'bup help COMMAND' for more information on " +
62 "a specific command.\n")
69 # Handle global options.
71 global_args, subcmd = getopt.getopt(argv[1:], '?Vd:',
72 ['help', 'version', 'bup-dir='])
73 except getopt.GetoptError, ex:
74 log('error: ' + ex.msg + '\n')
80 for opt in global_args:
81 if opt[0] == '-?' or opt[0] == '--help':
83 if opt[0] == '-V' or opt[0] == '--version':
85 elif opt[0] == '-d' or opt[0] == '--bup-dir':
88 log('error: unexpected option "%s"\n' % opt[0])
97 if help_requested and subcmd[0] != 'help':
98 subcmd = ['help'] + subcmd
100 if len(subcmd) > 1 and subcmd[1] == '--help' and subcmd[0] != 'help':
101 subcmd = ['help', subcmd[0]] + subcmd[2:]
103 subcmd_name = subcmd[0]
107 subcmd_env = os.environ
109 subcmd_env.update({"BUP_DIR" : dest_dir})
112 sp = os.path.join(exepath, 'bup-%s' % s)
113 if not os.path.exists(sp):
114 sp = os.path.join(cmdpath, 'bup-%s' % s)
117 if not os.path.exists(subpath(subcmd_name)):
118 log('error: unknown command "%s"\n' % subcmd_name)
121 already_fixed = atoi(os.environ.get('BUP_FORCE_TTY'))
122 if subcmd_name in ['ftp', 'help']:
124 fix_stdout = not already_fixed and os.isatty(1)
125 fix_stderr = not already_fixed and os.isatty(2)
128 if fix_stdout or fix_stderr:
129 amt = (fix_stdout and 1 or 0) + (fix_stderr and 2 or 0)
130 os.environ['BUP_FORCE_TTY'] = str(amt)
131 os.setsid() # make sure ctrl-c is sent just to us, not to child too
133 if fix_stdout or fix_stderr:
134 realf = fix_stderr and 2 or 1
135 drealf = os.dup(realf) # Popen goes crazy with stdout=2
136 n = subprocess.Popen([subpath('newliner')],
137 stdin=subprocess.PIPE, stdout=drealf,
138 close_fds=True, preexec_fn=force_tty)
140 outf = fix_stdout and n.stdin.fileno() or None
141 errf = fix_stderr and n.stdin.fileno() or None
148 class SigException(Exception):
149 def __init__(self, signum):
151 Exception.__init__(self, 'signal %d received' % signum)
152 def handler(signum, frame):
153 raise SigException(signum)
155 signal.signal(signal.SIGTERM, handler)
156 signal.signal(signal.SIGINT, handler)
162 p = subprocess.Popen([subpath(subcmd_name)] + subcmd[1:],
163 stdout=outf, stderr=errf, preexec_fn=force_tty)
165 # if we get a signal while waiting, we have to keep waiting, just
166 # in case our child doesn't die.
170 except SigException, e:
171 log('\nbup: %s\n' % e)
172 os.kill(p.pid, e.signum)
175 log('%s: %s\n' % (subpath(subcmd_name), e))
178 if p and p.poll() == None:
179 os.kill(p.pid, signal.SIGTERM)