2 import sys, time, struct
3 from bup import hashsplit, git, options, client
4 from bup.helpers import *
5 from subprocess import PIPE
9 bup split [-tcb] [-n name] [--bench] [filenames...]
11 r,remote= remote repository path
12 b,blobs output a series of blob ids
13 t,tree output a tree id
14 c,commit output a commit id
15 n,name= name of backup set to update (if any)
16 N,noop don't actually save the data anywhere
17 q,quiet don't print progress messages
18 v,verbose increase log output (can be used more than once)
19 copy just copy input to output, hashsplitting along the way
20 bench print benchmark timings to stderr
21 max-pack-size= maximum bytes in a single pack
22 max-pack-objects= maximum number of objects in a single pack
23 fanout= maximum number of blobs in a single tree
24 bwlimit= maximum bytes/sec to transmit to server
26 o = options.Options('bup split', optspec)
27 (opt, flags, extra) = o.parse(sys.argv[1:])
30 git.check_repo_or_die()
31 if not (opt.blobs or opt.tree or opt.commit or opt.name or
32 opt.noop or opt.copy):
33 o.fatal("use one or more of -b, -t, -c, -n, -N, --copy")
34 if (opt.noop or opt.copy) and (opt.blobs or opt.tree or
35 opt.commit or opt.name):
36 o.fatal('-N and --copy are incompatible with -b, -t, -c, -n')
39 git.verbose = opt.verbose - 1
42 hashsplit.max_pack_size = parse_num(opt.max_pack_size)
43 if opt.max_pack_objects:
44 hashsplit.max_pack_objects = parse_num(opt.max_pack_objects)
46 hashsplit.fanout = parse_num(opt.fanout)
50 client.bwlimit = parse_num(opt.bwlimit)
52 is_reverse = os.environ.get('BUP_SERVER_REVERSE')
53 if is_reverse and opt.remote:
54 o.fatal("don't use -r in reverse mode; it's automatic")
55 start_time = time.time()
57 refname = opt.name and 'refs/heads/%s' % opt.name or None
58 if opt.noop or opt.copy:
59 cli = pack_writer = oldref = None
60 elif opt.remote or is_reverse:
61 cli = client.Client(opt.remote)
62 oldref = refname and cli.read_ref(refname) or None
63 pack_writer = cli.new_packwriter()
66 oldref = refname and git.read_ref(refname) or None
67 pack_writer = git.PackWriter()
69 files = extra and (open(fn) for fn in extra) or [sys.stdin]
71 shalist = hashsplit.split_to_shalist(pack_writer, files)
72 tree = pack_writer.new_tree(shalist)
75 for (blob, bits) in hashsplit.hashsplit_iter(files):
76 hashsplit.total_split += len(blob)
78 sys.stdout.write(str(blob))
79 megs = hashsplit.total_split/1024/1024
80 if not opt.quiet and last != megs:
81 progress('%d Mbytes read\r' % megs)
83 progress('%d Mbytes read, done.\n' % megs)
88 for (mode,name,bin) in shalist:
89 print bin.encode('hex')
91 print tree.encode('hex')
92 if opt.commit or opt.name:
93 msg = 'bup split\n\nGenerated by command:\n%r' % sys.argv
94 ref = opt.name and ('refs/heads/%s' % opt.name) or None
95 commit = pack_writer.new_commit(oldref, tree, msg)
97 print commit.encode('hex')
100 pack_writer.close() # must close before we can update the ref
104 cli.update_ref(refname, commit, oldref)
106 git.update_ref(refname, commit, oldref)
111 secs = time.time() - start_time
112 size = hashsplit.total_split
114 log('\nbup: %.2fkbytes in %.2f secs = %.2f kbytes/sec\n'
115 % (size/1024., secs, size/1024./secs))