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  • Committer: John Arbash Meinel
  • Date: 2008-07-09 19:57:36 UTC
  • mto: This revision was merged to the branch mainline in revision 3564.
  • Revision ID: john@arbash-meinel.com-20080709195736-s9cg26gnym3lf2d0
cleanup a few imports to be lazily loaded.

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bzrlib/knit.py
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from itertools import izip, chain
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import operator
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import os
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import urllib
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import sys
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import warnings
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from zlib import Z_DEFAULT_COMPRESSION
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import bzrlib
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from bzrlib import (
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    annotate,
 
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    debug,
 
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    diff,
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    graph as _mod_graph,
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    index as _mod_index,
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    lru_cache,
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    pack,
 
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    progress,
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    trace,
 
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    tsort,
 
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    tuned_gzip,
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    )
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""")
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from bzrlib import (
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    cache_utf8,
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    debug,
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    diff,
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    errors,
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    osutils,
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    patiencediff,
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    progress,
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    merge,
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    ui,
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    )
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from bzrlib.errors import (
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    FileExists,
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    RevisionNotPresent,
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    RevisionAlreadyPresent,
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    )
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from bzrlib.graph import Graph
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from bzrlib.osutils import (
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    contains_whitespace,
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    contains_linebreaks,
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    sha_strings,
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    split_lines,
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    )
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from bzrlib.tsort import topo_sort
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from bzrlib.tuned_gzip import GzipFile, bytes_to_gzip
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import bzrlib.ui
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from bzrlib.versionedfile import (
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    AbsentContentFactory,
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    adapter_registry,
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    VersionedFile,
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    VersionedFiles,
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    )
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import bzrlib.weave
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# TODO: Split out code specific to this format into an associated object.
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        global_map, parent_maps = self._get_parent_map_with_sources(keys)
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        if ordering == 'topological':
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            # Global topological sort
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            present_keys = topo_sort(global_map)
 
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            present_keys = tsort.topo_sort(global_map)
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            # Now group by source:
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            source_keys = []
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            current_source = None
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        :return: the header and the decompressor stream.
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                 as (stream, header_record)
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        """
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        df = GzipFile(mode='rb', fileobj=StringIO(raw_data))
 
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        df = tuned_gzip.GzipFile(mode='rb', fileobj=StringIO(raw_data))
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        try:
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            # Current serialise
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            rec = self._check_header(key, df.readline())
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        # 4168 calls in 2880 217 internal
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        # 4168 calls to _parse_record_header in 2121
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        # 4168 calls to readlines in 330
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        df = GzipFile(mode='rb', fileobj=StringIO(data))
 
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        df = tuned_gzip.GzipFile(mode='rb', fileobj=StringIO(data))
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        try:
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            record_contents = df.readlines()
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        except Exception, e:
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                'data must be plain bytes was %s' % type(bytes))
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        if lines and lines[-1][-1] != '\n':
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            raise ValueError('corrupt lines value %r' % lines)
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        compressed_bytes = bytes_to_gzip(bytes)
 
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        compressed_bytes = tuned_gzip.bytes_to_gzip(bytes)
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        return len(compressed_bytes), compressed_bytes
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    def _split_header(self, line):
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        # TODO: this code generates a parent maps of present ancestors; it
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        # could be split out into a separate method, and probably should use
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        # iter_ancestry instead. -- mbp and robertc 20080704
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        graph = Graph(self._knit)
 
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        graph = _mod_graph.Graph(self._knit)
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        head_cache = _mod_graph.FrozenHeadsCache(graph)
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        search = graph._make_breadth_first_searcher([key])
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        keys = set()