/brz/remove-bazaar

To get this branch, use:
bzr branch http://gegoxaren.bato24.eu/bzr/brz/remove-bazaar

« back to all changes in this revision

Viewing changes to bzrlib/tuned_gzip.py

  • Committer: Vincent Ladeuil
  • Date: 2009-04-11 16:06:53 UTC
  • mto: (4286.1.1 integration)
  • mto: This revision was merged to the branch mainline in revision 4287.
  • Revision ID: v.ladeuil+lp@free.fr-20090411160653-eq1gfn41q3lzhmss
Cleanup test imports and use features to better track skipped tests.

* bzrlib/tests/workingtree_implementations/__init__.py: 
Fix imports. Delete obsolete comment.

* bzrlib/tests/tree_implementations/test_walkdirs.py:
(TestWalkdirs.get_all_subdirs_expected): Reduce duplication.

* bzrlib/tests/tree_implementations/test_test_trees.py: 
Fix import.

* bzrlib/tests/tree_implementations/test_path_content_summary.py: 
Fix imports.

(TestPathContentSummary.test_unicode_symlink_content_summary,
TestPathContentSummary.test_unicode_symlink_target_summary):Use
UnicodeFilenameFeature instead of try/except UnicodeError.

* bzrlib/tests/tree_implementations/test_inv.py: 
Fix imports.
(TestInventoryWithSymlinks): Factor out test that requires
symlinks and use _test_needs_features.
(TestInventory.test_canonical_path,
TestInventory.test_canonical_path_dir,
TestInventory.test_canonical_path_root,
TestInventory.test_canonical_path_invalid_all,
TestInventory.test_canonical_invalid_child): Use assert(expected,
actual)

* bzrlib/tests/tree_implementations/test_get_symlink_target.py: 
Fix imports.
(TestGetSymlinkTarget.test_get_unicode_symlink_target): Use
UnicodeFilenameFeature instead of try/except UnicodeError.

* bzrlib/tests/tree_implementations/__init__.py: 
Fix imports.

(TestCaseWithTree.get_tree_with_subdirs_and_all_supported_content_types,
TestCaseWithTree._create_tree_with_utf8): Use
UnicodeFilenameFeature instead of try/except UnicodeError.

* bzrlib/tests/test_workingtree_4.py:
Fix too long lines.

Show diffs side-by-side

added added

removed removed

Lines of Context:
bzrlib/tuned_gzip.py
52
52
    width=-zlib.MAX_WBITS, mem=zlib.DEF_MEM_LEVEL,
53
53
    crc32=zlib.crc32):
54
54
    """Create a gzip file containing bytes and return its content."""
55
 
    return chunks_to_gzip([bytes])
56
 
 
57
 
 
58
 
def chunks_to_gzip(chunks, factory=zlib.compressobj,
59
 
    level=zlib.Z_DEFAULT_COMPRESSION, method=zlib.DEFLATED,
60
 
    width=-zlib.MAX_WBITS, mem=zlib.DEF_MEM_LEVEL,
61
 
    crc32=zlib.crc32):
62
 
    """Create a gzip file containing chunks and return its content.
63
 
 
64
 
    :param chunks: An iterable of strings. Each string can have arbitrary
65
 
        layout.
66
 
    """
67
55
    result = [
68
56
        '\037\213'  # self.fileobj.write('\037\213')  # magic header
69
57
        '\010'      # self.fileobj.write('\010')      # compression method
81
69
    # using a compressobj avoids a small header and trailer that the compress()
82
70
    # utility function adds.
83
71
    compress = factory(level, method, width, mem, 0)
84
 
    crc = 0
85
 
    total_len = 0
86
 
    for chunk in chunks:
87
 
        crc = crc32(chunk, crc)
88
 
        total_len += len(chunk)
89
 
        zbytes = compress.compress(chunk)
90
 
        if zbytes:
91
 
            result.append(zbytes)
 
72
    result.append(compress.compress(bytes))
92
73
    result.append(compress.flush())
 
74
    result.append(struct.pack("<L", LOWU32(crc32(bytes))))
93
75
    # size may exceed 2GB, or even 4GB
94
 
    result.append(struct.pack("<LL", LOWU32(crc), LOWU32(total_len)))
 
76
    result.append(struct.pack("<L", LOWU32(len(bytes))))
95
77
    return ''.join(result)
96
78
 
97
79