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:])
29 git.check_repo_or_die()
30 if not (opt.blobs or opt.tree or opt.commit or opt.name or
31 opt.noop or opt.copy):
32 o.fatal("use one or more of -b, -t, -c, -n, -N, --copy")
33 if (opt.noop or opt.copy) and (opt.blobs or opt.tree or
34 opt.commit or opt.name):
35 o.fatal('-N is incompatible with -b, -t, -c, -n')
38 git.verbose = opt.verbose - 1
41 hashsplit.max_pack_size = parse_num(opt.max_pack_size)
42 if opt.max_pack_objects:
43 hashsplit.max_pack_objects = parse_num(opt.max_pack_objects)
45 hashsplit.fanout = parse_num(opt.fanout)
49 client.bwlimit = parse_num(opt.bwlimit)
51 is_reverse = os.environ.get('BUP_SERVER_REVERSE')
52 if is_reverse and opt.remote:
53 o.fatal("don't use -r in reverse mode; it's automatic")
54 start_time = time.time()
56 refname = opt.name and 'refs/heads/%s' % opt.name or None
57 if opt.noop or opt.copy:
58 cli = pack_writer = oldref = None
59 elif opt.remote or is_reverse:
60 cli = client.Client(opt.remote)
61 oldref = refname and cli.read_ref(refname) or None
62 pack_writer = cli.new_packwriter()
65 oldref = refname and git.read_ref(refname) or None
66 pack_writer = git.PackWriter()
68 files = extra and (open(fn) for fn in extra) or [sys.stdin]
70 shalist = hashsplit.split_to_shalist(pack_writer, files)
71 tree = pack_writer.new_tree(shalist)
74 for (blob, bits) in hashsplit.hashsplit_iter(files):
75 hashsplit.total_split += len(blob)
77 sys.stdout.write(str(blob))
78 megs = hashsplit.total_split/1024/1024
79 if not opt.quiet and last != megs:
80 progress('%d Mbytes read\r' % megs)
82 progress('%d Mbytes read, done.\n' % megs)
87 for (mode,name,bin) in shalist:
88 print bin.encode('hex')
90 print tree.encode('hex')
91 if opt.commit or opt.name:
92 msg = 'bup split\n\nGenerated by command:\n%r' % sys.argv
93 ref = opt.name and ('refs/heads/%s' % opt.name) or None
94 commit = pack_writer.new_commit(oldref, tree, msg)
96 print commit.encode('hex')
99 pack_writer.close() # must close before we can update the ref
103 cli.update_ref(refname, commit, oldref)
105 git.update_ref(refname, commit, oldref)
110 secs = time.time() - start_time
111 size = hashsplit.total_split
113 log('\nbup: %.2fkbytes in %.2f secs = %.2f kbytes/sec\n'
114 % (size/1024., secs, size/1024./secs))