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# Copyright (C) 2006, 2007, 2008 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""DirState objects record the state of a directory and its bzr metadata.
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Pseudo EBNF grammar for the state file. Fields are separated by NULLs, and
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lines by NL. The field delimiters are ommitted in the grammar, line delimiters
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are not - this is done for clarity of reading. All string data is in utf8.
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MINIKIND = "f" | "d" | "l" | "a" | "r" | "t";
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WHOLE_NUMBER = {digit}, digit;
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REVISION_ID = a non-empty utf8 string;
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dirstate format = header line, full checksum, row count, parent details,
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ghost_details, entries;
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header line = "#bazaar dirstate flat format 3", NL;
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full checksum = "crc32: ", ["-"], WHOLE_NUMBER, NL;
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row count = "num_entries: ", WHOLE_NUMBER, NL;
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parent_details = WHOLE NUMBER, {REVISION_ID}* NL;
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ghost_details = WHOLE NUMBER, {REVISION_ID}*, NL;
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entry = entry_key, current_entry_details, {parent_entry_details};
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entry_key = dirname, basename, fileid;
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current_entry_details = common_entry_details, working_entry_details;
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parent_entry_details = common_entry_details, history_entry_details;
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common_entry_details = MINIKIND, fingerprint, size, executable
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working_entry_details = packed_stat
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history_entry_details = REVISION_ID;
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fingerprint = a nonempty utf8 sequence with meaning defined by minikind.
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Given this definition, the following is useful to know:
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entry (aka row) - all the data for a given key.
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entry[0]: The key (dirname, basename, fileid)
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entry[1]: The tree(s) data for this path and id combination.
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entry[1][0]: The current tree
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entry[1][1]: The second tree
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For an entry for a tree, we have (using tree 0 - current tree) to demonstrate:
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entry[1][0][0]: minikind
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entry[1][0][1]: fingerprint
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entry[1][0][3]: executable
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entry[1][0][4]: packed_stat
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entry[1][1][4]: revision_id
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There may be multiple rows at the root, one per id present in the root, so the
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in memory root row is now:
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self._dirblocks[0] -> ('', [entry ...]),
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and the entries in there are
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entries[0][2]: file_id
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entries[1][0]: The tree data for the current tree for this fileid at /
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'r' is a relocated entry: This path is not present in this tree with this id,
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but the id can be found at another location. The fingerprint is used to
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point to the target location.
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'a' is an absent entry: In that tree the id is not present at this path.
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'd' is a directory entry: This path in this tree is a directory with the
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current file id. There is no fingerprint for directories.
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'f' is a file entry: As for directory, but its a file. The fingerprint is a
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'l' is a symlink entry: As for directory, but a symlink. The fingerprint is the
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't' is a reference to a nested subtree; the fingerprint is the referenced
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The entries on disk and in memory are ordered according to the following keys:
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directory, as a list of components
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--- Format 1 had the following different definition: ---
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rows = dirname, NULL, basename, NULL, MINIKIND, NULL, fileid_utf8, NULL,
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WHOLE NUMBER (* size *), NULL, packed stat, NULL, sha1|symlink target,
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PARENT ROW = NULL, revision_utf8, NULL, MINIKIND, NULL, dirname, NULL,
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basename, NULL, WHOLE NUMBER (* size *), NULL, "y" | "n", NULL,
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PARENT ROW's are emitted for every parent that is not in the ghosts details
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line. That is, if the parents are foo, bar, baz, and the ghosts are bar, then
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each row will have a PARENT ROW for foo and baz, but not for bar.
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In any tree, a kind of 'moved' indicates that the fingerprint field
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(which we treat as opaque data specific to the 'kind' anyway) has the
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details for the id of this row in that tree.
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I'm strongly tempted to add a id->path index as well, but I think that
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where we need id->path mapping; we also usually read the whole file, so
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I'm going to skip that for the moment, as we have the ability to locate
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via bisect any path in any tree, and if we lookup things by path, we can
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accumulate an id->path mapping as we go, which will tend to match what we
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I plan to implement this asap, so please speak up now to alter/tweak the
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design - and once we stabilise on this, I'll update the wiki page for
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The rationale for all this is that we want fast operations for the
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common case (diff/status/commit/merge on all files) and extremely fast
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operations for the less common but still occurs a lot status/diff/commit
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on specific files). Operations on specific files involve a scan for all
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the children of a path, *in every involved tree*, which the current
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format did not accommodate.
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1) Fast end to end use for bzr's top 5 uses cases. (commmit/diff/status/merge/???)
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2) fall back current object model as needed.
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3) scale usably to the largest trees known today - say 50K entries. (mozilla
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is an example of this)
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Eventually reuse dirstate objects across locks IFF the dirstate file has not
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been modified, but will require that we flush/ignore cached stat-hit data
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because we won't want to restat all files on disk just because a lock was
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acquired, yet we cannot trust the data after the previous lock was released.
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Memory representation:
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vector of all directories, and vector of the childen ?
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root_entrie = (direntry for root, [parent_direntries_for_root]),
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('', ['data for achild', 'data for bchild', 'data for cchild'])
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('dir', ['achild', 'cchild', 'echild'])
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- single bisect to find N subtrees from a path spec
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- in-order for serialisation - this is 'dirblock' grouping.
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- insertion of a file '/a' affects only the '/' child-vector, that is, to
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insert 10K elements from scratch does not generates O(N^2) memoves of a
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single vector, rather each individual, which tends to be limited to a
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manageable number. Will scale badly on trees with 10K entries in a
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single directory. compare with Inventory.InventoryDirectory which has
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a dictionary for the children. No bisect capability, can only probe for
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exact matches, or grab all elements and sort.
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- What's the risk of error here? Once we have the base format being processed
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we should have a net win regardless of optimality. So we are going to
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go with what seems reasonable.
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Maybe we should do a test profile of the core structure - 10K simulated
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searches/lookups/etc?
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Objects for each row?
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The lifetime of Dirstate objects is current per lock, but see above for
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possible extensions. The lifetime of a row from a dirstate is expected to be
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very short in the optimistic case: which we are optimising for. For instance,
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subtree status will determine from analysis of the disk data what rows need to
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be examined at all, and will be able to determine from a single row whether
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that file has altered or not, so we are aiming to process tens of thousands of
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entries each second within the dirstate context, before exposing anything to
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the larger codebase. This suggests we want the time for a single file
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comparison to be < 0.1 milliseconds. That would give us 10000 paths per second
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processed, and to scale to 100 thousand we'll another order of magnitude to do
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that. Now, as the lifetime for all unchanged entries is the time to parse, stat
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the file on disk, and then immediately discard, the overhead of object creation
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becomes a significant cost.
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Figures: Creating a tuple from from 3 elements was profiled at 0.0625
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microseconds, whereas creating a object which is subclassed from tuple was
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0.500 microseconds, and creating an object with 3 elements and slots was 3
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microseconds long. 0.1 milliseconds is 100 microseconds, and ideally we'll get
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down to 10 microseconds for the total processing - having 33% of that be object
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creation is a huge overhead. There is a potential cost in using tuples within
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each row which is that the conditional code to do comparisons may be slower
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than method invocation, but method invocation is known to be slow due to stack
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frame creation, so avoiding methods in these tight inner loops in unfortunately
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desirable. We can consider a pyrex version of this with objects in future if
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from stat import S_IEXEC
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# This is the Windows equivalent of ENOTDIR
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# It is defined in pywin32.winerror, but we don't want a strong dependency for
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# just an error code.
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ERROR_PATH_NOT_FOUND = 3
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ERROR_DIRECTORY = 267
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if not getattr(struct, '_compile', None):
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# Cannot pre-compile the dirstate pack_stat
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def pack_stat(st, _encode=binascii.b2a_base64, _pack=struct.pack):
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"""Convert stat values into a packed representation."""
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return _encode(_pack('>LLLLLL', st.st_size, int(st.st_mtime),
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int(st.st_ctime), st.st_dev, st.st_ino & 0xFFFFFFFF,
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# compile the struct compiler we need, so as to only do it once
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from _struct import Struct
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_compiled_pack = Struct('>LLLLLL').pack
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def pack_stat(st, _encode=binascii.b2a_base64, _pack=_compiled_pack):
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"""Convert stat values into a packed representation."""
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# jam 20060614 it isn't really worth removing more entries if we
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# are going to leave it in packed form.
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# With only st_mtime and st_mode filesize is 5.5M and read time is 275ms
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# With all entries, filesize is 5.9M and read time is maybe 280ms
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# well within the noise margin
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# base64 encoding always adds a final newline, so strip it off
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# The current version
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return _encode(_pack(st.st_size, int(st.st_mtime), int(st.st_ctime),
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st.st_dev, st.st_ino & 0xFFFFFFFF, st.st_mode))[:-1]
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# This is 0.060s / 1.520s faster by not encoding as much information
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# return _encode(_pack('>LL', int(st.st_mtime), st.st_mode))[:-1]
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# This is not strictly faster than _encode(_pack())[:-1]
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# return '%X.%X.%X.%X.%X.%X' % (
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# st.st_size, int(st.st_mtime), int(st.st_ctime),
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# st.st_dev, st.st_ino, st.st_mode)
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# Similar to the _encode(_pack('>LL'))
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# return '%X.%X' % (int(st.st_mtime), st.st_mode)
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class DirState(object):
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"""Record directory and metadata state for fast access.
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A dirstate is a specialised data structure for managing local working
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tree state information. Its not yet well defined whether it is platform
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specific, and if it is how we detect/parameterize that.
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Dirstates use the usual lock_write, lock_read and unlock mechanisms.
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Unlike most bzr disk formats, DirStates must be locked for reading, using
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lock_read. (This is an os file lock internally.) This is necessary
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because the file can be rewritten in place.
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DirStates must be explicitly written with save() to commit changes; just
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unlocking them does not write the changes to disk.
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_kind_to_minikind = {
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'tree-reference': 't',
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_minikind_to_kind = {
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't': 'tree-reference',
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_stat_to_minikind = {
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_to_yesno = {True:'y', False: 'n'} # TODO profile the performance gain
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# of using int conversion rather than a dict here. AND BLAME ANDREW IF
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# TODO: jam 20070221 Figure out what to do if we have a record that exceeds
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# the BISECT_PAGE_SIZE. For now, we just have to make it large enough
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# that we are sure a single record will always fit.
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BISECT_PAGE_SIZE = 4096
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IN_MEMORY_UNMODIFIED = 1
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IN_MEMORY_MODIFIED = 2
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# A pack_stat (the x's) that is just noise and will never match the output
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NULL_PARENT_DETAILS = ('a', '', 0, False, '')
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HEADER_FORMAT_2 = '#bazaar dirstate flat format 2\n'
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HEADER_FORMAT_3 = '#bazaar dirstate flat format 3\n'
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def __init__(self, path):
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"""Create a DirState object.
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:param path: The path at which the dirstate file on disk should live.
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# _header_state and _dirblock_state represent the current state
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# of the dirstate metadata and the per-row data respectiely.
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# NOT_IN_MEMORY indicates that no data is in memory
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# IN_MEMORY_UNMODIFIED indicates that what we have in memory
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# is the same as is on disk
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# IN_MEMORY_MODIFIED indicates that we have a modified version
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# of what is on disk.
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# In future we will add more granularity, for instance _dirblock_state
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# will probably support partially-in-memory as a separate variable,
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# allowing for partially-in-memory unmodified and partially-in-memory
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self._header_state = DirState.NOT_IN_MEMORY
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self._dirblock_state = DirState.NOT_IN_MEMORY
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# If true, an error has been detected while updating the dirstate, and
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# for safety we're not going to commit to disk.
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self._changes_aborted = False
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self._state_file = None
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self._filename = path
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self._lock_token = None
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self._lock_state = None
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self._id_index = None
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# a map from packed_stat to sha's.
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self._packed_stat_index = None
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self._end_of_header = None
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self._cutoff_time = None
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self._split_path_cache = {}
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self._bisect_page_size = DirState.BISECT_PAGE_SIZE
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if 'hashcache' in debug.debug_flags:
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self._sha1_file = self._sha1_file_and_mutter
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self._sha1_file = osutils.sha_file_by_name
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# These two attributes provide a simple cache for lookups into the
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# dirstate in-memory vectors. By probing respectively for the last
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# block, and for the next entry, we save nearly 2 bisections per path
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self._last_block_index = None
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self._last_entry_index = None
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(self.__class__.__name__, self._filename)
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def add(self, path, file_id, kind, stat, fingerprint):
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"""Add a path to be tracked.
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:param path: The path within the dirstate - '' is the root, 'foo' is the
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path foo within the root, 'foo/bar' is the path bar within foo
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:param file_id: The file id of the path being added.
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:param kind: The kind of the path, as a string like 'file',
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:param stat: The output of os.lstat for the path.
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:param fingerprint: The sha value of the file,
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or the target of a symlink,
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or the referenced revision id for tree-references,
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or '' for directories.
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# find the block its in.
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# find the location in the block.
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# check its not there
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#------- copied from inventory.ensure_normalized_name - keep synced.
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# --- normalized_filename wants a unicode basename only, so get one.
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dirname, basename = osutils.split(path)
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# we dont import normalized_filename directly because we want to be
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# able to change the implementation at runtime for tests.
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norm_name, can_access = osutils.normalized_filename(basename)
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if norm_name != basename:
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raise errors.InvalidNormalization(path)
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# you should never have files called . or ..; just add the directory
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# in the parent, or according to the special treatment for the root
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if basename == '.' or basename == '..':
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raise errors.InvalidEntryName(path)
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# now that we've normalised, we need the correct utf8 path and
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# dirname and basename elements. This single encode and split should be
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# faster than three separate encodes.
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utf8path = (dirname + '/' + basename).strip('/').encode('utf8')
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dirname, basename = osutils.split(utf8path)
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# uses __class__ for speed; the check is needed for safety
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if file_id.__class__ is not str:
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raise AssertionError(
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"must be a utf8 file_id not %s" % (type(file_id), ))
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# Make sure the file_id does not exist in this tree
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file_id_entry = self._get_entry(0, fileid_utf8=file_id, include_deleted=True)
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if file_id_entry != (None, None):
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if file_id_entry[1][0][0] == 'a':
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if file_id_entry[0] != (dirname, basename, file_id):
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# set the old name's current operation to rename
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self.update_minimal(file_id_entry[0],
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rename_from = file_id_entry[0][0:2]
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path = osutils.pathjoin(file_id_entry[0][0], file_id_entry[0][1])
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kind = DirState._minikind_to_kind[file_id_entry[1][0][0]]
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info = '%s:%s' % (kind, path)
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raise errors.DuplicateFileId(file_id, info)
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first_key = (dirname, basename, '')
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block_index, present = self._find_block_index_from_key(first_key)
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# check the path is not in the tree
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block = self._dirblocks[block_index][1]
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entry_index, _ = self._find_entry_index(first_key, block)
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while (entry_index < len(block) and
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block[entry_index][0][0:2] == first_key[0:2]):
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if block[entry_index][1][0][0] not in 'ar':
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# this path is in the dirstate in the current tree.
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raise Exception, "adding already added path!"
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# The block where we want to put the file is not present. But it
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# might be because the directory was empty, or not loaded yet. Look
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# for a parent entry, if not found, raise NotVersionedError
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parent_dir, parent_base = osutils.split(dirname)
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parent_block_idx, parent_entry_idx, _, parent_present = \
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self._get_block_entry_index(parent_dir, parent_base, 0)
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if not parent_present:
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raise errors.NotVersionedError(path, str(self))
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self._ensure_block(parent_block_idx, parent_entry_idx, dirname)
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block = self._dirblocks[block_index][1]
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entry_key = (dirname, basename, file_id)
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packed_stat = DirState.NULLSTAT
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packed_stat = pack_stat(stat)
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parent_info = self._empty_parent_info()
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minikind = DirState._kind_to_minikind[kind]
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if rename_from is not None:
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old_path_utf8 = '%s/%s' % rename_from
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old_path_utf8 = rename_from[1]
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parent_info[0] = ('r', old_path_utf8, 0, False, '')
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entry_data = entry_key, [
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(minikind, fingerprint, size, False, packed_stat),
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elif kind == 'directory':
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entry_data = entry_key, [
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(minikind, '', 0, False, packed_stat),
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elif kind == 'symlink':
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entry_data = entry_key, [
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(minikind, fingerprint, size, False, packed_stat),
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elif kind == 'tree-reference':
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entry_data = entry_key, [
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(minikind, fingerprint, 0, False, packed_stat),
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raise errors.BzrError('unknown kind %r' % kind)
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entry_index, present = self._find_entry_index(entry_key, block)
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block.insert(entry_index, entry_data)
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if block[entry_index][1][0][0] != 'a':
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raise AssertionError(" %r(%r) already added" % (basename, file_id))
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block[entry_index][1][0] = entry_data[1][0]
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if kind == 'directory':
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# insert a new dirblock
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self._ensure_block(block_index, entry_index, utf8path)
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self._dirblock_state = DirState.IN_MEMORY_MODIFIED
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self._id_index.setdefault(entry_key[2], set()).add(entry_key)
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def _bisect(self, paths):
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"""Bisect through the disk structure for specific rows.
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:param paths: A list of paths to find
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:return: A dict mapping path => entries for found entries. Missing
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entries will not be in the map.
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The list is not sorted, and entries will be populated
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based on when they were read.
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self._requires_lock()
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# We need the file pointer to be right after the initial header block
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self._read_header_if_needed()
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# If _dirblock_state was in memory, we should just return info from
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# there, this function is only meant to handle when we want to read
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if self._dirblock_state != DirState.NOT_IN_MEMORY:
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raise AssertionError("bad dirblock state %r" % self._dirblock_state)
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# The disk representation is generally info + '\0\n\0' at the end. But
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# for bisecting, it is easier to treat this as '\0' + info + '\0\n'
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# Because it means we can sync on the '\n'
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state_file = self._state_file
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file_size = os.fstat(state_file.fileno()).st_size
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# We end up with 2 extra fields, we should have a trailing '\n' to
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# ensure that we read the whole record, and we should have a precursur
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# '' which ensures that we start after the previous '\n'
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entry_field_count = self._fields_per_entry() + 1
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low = self._end_of_header
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high = file_size - 1 # Ignore the final '\0'
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# Map from (dir, name) => entry
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# Avoid infinite seeking
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max_count = 30*len(paths)
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# pending is a list of places to look.
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# each entry is a tuple of low, high, dir_names
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# low -> the first byte offset to read (inclusive)
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# high -> the last byte offset (inclusive)
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# dir_names -> The list of (dir, name) pairs that should be found in
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# the [low, high] range
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pending = [(low, high, paths)]
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page_size = self._bisect_page_size
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fields_to_entry = self._get_fields_to_entry()
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low, high, cur_files = pending.pop()
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if not cur_files or low >= high:
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if count > max_count:
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raise errors.BzrError('Too many seeks, most likely a bug.')
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mid = max(low, (low+high-page_size)/2)
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# limit the read size, so we don't end up reading data that we have
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read_size = min(page_size, (high-mid)+1)
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block = state_file.read(read_size)
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entries = block.split('\n')
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# We didn't find a '\n', so we cannot have found any records.
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# So put this range back and try again. But we know we have to
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# increase the page size, because a single read did not contain
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# a record break (so records must be larger than page_size)
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pending.append((low, high, cur_files))
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# Check the first and last entries, in case they are partial, or if
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# we don't care about the rest of this page
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first_fields = entries[0].split('\0')
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if len(first_fields) < entry_field_count:
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# We didn't get the complete first entry
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# so move start, and grab the next, which
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# should be a full entry
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start += len(entries[0])+1
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first_fields = entries[1].split('\0')
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if len(first_fields) <= 2:
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# We didn't even get a filename here... what do we do?
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# Try a large page size and repeat this query
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pending.append((low, high, cur_files))
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# Find what entries we are looking for, which occur before and
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# after this first record.
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first_path = first_fields[1] + '/' + first_fields[2]
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first_path = first_fields[2]
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first_loc = _bisect_path_left(cur_files, first_path)
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# These exist before the current location
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pre = cur_files[:first_loc]
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# These occur after the current location, which may be in the
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# data we read, or might be after the last entry
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post = cur_files[first_loc:]
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if post and len(first_fields) >= entry_field_count:
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# We have files after the first entry
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# Parse the last entry
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last_entry_num = len(entries)-1
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last_fields = entries[last_entry_num].split('\0')
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if len(last_fields) < entry_field_count:
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# The very last hunk was not complete,
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# read the previous hunk
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after = mid + len(block) - len(entries[-1])
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last_fields = entries[last_entry_num].split('\0')
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after = mid + len(block)
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last_path = last_fields[1] + '/' + last_fields[2]
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last_path = last_fields[2]
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last_loc = _bisect_path_right(post, last_path)
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middle_files = post[:last_loc]
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post = post[last_loc:]
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# We have files that should occur in this block
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# (>= first, <= last)
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# Either we will find them here, or we can mark them as
650
if middle_files[0] == first_path:
651
# We might need to go before this location
652
pre.append(first_path)
653
if middle_files[-1] == last_path:
654
post.insert(0, last_path)
656
# Find out what paths we have
657
paths = {first_path:[first_fields]}
658
# last_path might == first_path so we need to be
659
# careful if we should append rather than overwrite
660
if last_entry_num != first_entry_num:
661
paths.setdefault(last_path, []).append(last_fields)
662
for num in xrange(first_entry_num+1, last_entry_num):
663
# TODO: jam 20070223 We are already splitting here, so
664
# shouldn't we just split the whole thing rather
665
# than doing the split again in add_one_record?
666
fields = entries[num].split('\0')
668
path = fields[1] + '/' + fields[2]
671
paths.setdefault(path, []).append(fields)
673
for path in middle_files:
674
for fields in paths.get(path, []):
675
# offset by 1 because of the opening '\0'
676
# consider changing fields_to_entry to avoid the
678
entry = fields_to_entry(fields[1:])
679
found.setdefault(path, []).append(entry)
681
# Now we have split up everything into pre, middle, and post, and
682
# we have handled everything that fell in 'middle'.
683
# We add 'post' first, so that we prefer to seek towards the
684
# beginning, so that we will tend to go as early as we need, and
685
# then only seek forward after that.
687
pending.append((after, high, post))
689
pending.append((low, start-1, pre))
691
# Consider that we may want to return the directory entries in sorted
692
# order. For now, we just return them in whatever order we found them,
693
# and leave it up to the caller if they care if it is ordered or not.
696
def _bisect_dirblocks(self, dir_list):
697
"""Bisect through the disk structure to find entries in given dirs.
699
_bisect_dirblocks is meant to find the contents of directories, which
700
differs from _bisect, which only finds individual entries.
702
:param dir_list: A sorted list of directory names ['', 'dir', 'foo'].
703
:return: A map from dir => entries_for_dir
705
# TODO: jam 20070223 A lot of the bisecting logic could be shared
706
# between this and _bisect. It would require parameterizing the
707
# inner loop with a function, though. We should evaluate the
708
# performance difference.
709
self._requires_lock()
710
# We need the file pointer to be right after the initial header block
711
self._read_header_if_needed()
712
# If _dirblock_state was in memory, we should just return info from
713
# there, this function is only meant to handle when we want to read
715
if self._dirblock_state != DirState.NOT_IN_MEMORY:
716
raise AssertionError("bad dirblock state %r" % self._dirblock_state)
717
# The disk representation is generally info + '\0\n\0' at the end. But
718
# for bisecting, it is easier to treat this as '\0' + info + '\0\n'
719
# Because it means we can sync on the '\n'
720
state_file = self._state_file
721
file_size = os.fstat(state_file.fileno()).st_size
722
# We end up with 2 extra fields, we should have a trailing '\n' to
723
# ensure that we read the whole record, and we should have a precursur
724
# '' which ensures that we start after the previous '\n'
725
entry_field_count = self._fields_per_entry() + 1
727
low = self._end_of_header
728
high = file_size - 1 # Ignore the final '\0'
729
# Map from dir => entry
732
# Avoid infinite seeking
733
max_count = 30*len(dir_list)
735
# pending is a list of places to look.
736
# each entry is a tuple of low, high, dir_names
737
# low -> the first byte offset to read (inclusive)
738
# high -> the last byte offset (inclusive)
739
# dirs -> The list of directories that should be found in
740
# the [low, high] range
741
pending = [(low, high, dir_list)]
743
page_size = self._bisect_page_size
745
fields_to_entry = self._get_fields_to_entry()
748
low, high, cur_dirs = pending.pop()
750
if not cur_dirs or low >= high:
755
if count > max_count:
756
raise errors.BzrError('Too many seeks, most likely a bug.')
758
mid = max(low, (low+high-page_size)/2)
761
# limit the read size, so we don't end up reading data that we have
763
read_size = min(page_size, (high-mid)+1)
764
block = state_file.read(read_size)
767
entries = block.split('\n')
770
# We didn't find a '\n', so we cannot have found any records.
771
# So put this range back and try again. But we know we have to
772
# increase the page size, because a single read did not contain
773
# a record break (so records must be larger than page_size)
775
pending.append((low, high, cur_dirs))
778
# Check the first and last entries, in case they are partial, or if
779
# we don't care about the rest of this page
781
first_fields = entries[0].split('\0')
782
if len(first_fields) < entry_field_count:
783
# We didn't get the complete first entry
784
# so move start, and grab the next, which
785
# should be a full entry
786
start += len(entries[0])+1
787
first_fields = entries[1].split('\0')
790
if len(first_fields) <= 1:
791
# We didn't even get a dirname here... what do we do?
792
# Try a large page size and repeat this query
794
pending.append((low, high, cur_dirs))
797
# Find what entries we are looking for, which occur before and
798
# after this first record.
800
first_dir = first_fields[1]
801
first_loc = bisect.bisect_left(cur_dirs, first_dir)
803
# These exist before the current location
804
pre = cur_dirs[:first_loc]
805
# These occur after the current location, which may be in the
806
# data we read, or might be after the last entry
807
post = cur_dirs[first_loc:]
809
if post and len(first_fields) >= entry_field_count:
810
# We have records to look at after the first entry
812
# Parse the last entry
813
last_entry_num = len(entries)-1
814
last_fields = entries[last_entry_num].split('\0')
815
if len(last_fields) < entry_field_count:
816
# The very last hunk was not complete,
817
# read the previous hunk
818
after = mid + len(block) - len(entries[-1])
820
last_fields = entries[last_entry_num].split('\0')
822
after = mid + len(block)
824
last_dir = last_fields[1]
825
last_loc = bisect.bisect_right(post, last_dir)
827
middle_files = post[:last_loc]
828
post = post[last_loc:]
831
# We have files that should occur in this block
832
# (>= first, <= last)
833
# Either we will find them here, or we can mark them as
836
if middle_files[0] == first_dir:
837
# We might need to go before this location
838
pre.append(first_dir)
839
if middle_files[-1] == last_dir:
840
post.insert(0, last_dir)
842
# Find out what paths we have
843
paths = {first_dir:[first_fields]}
844
# last_dir might == first_dir so we need to be
845
# careful if we should append rather than overwrite
846
if last_entry_num != first_entry_num:
847
paths.setdefault(last_dir, []).append(last_fields)
848
for num in xrange(first_entry_num+1, last_entry_num):
849
# TODO: jam 20070223 We are already splitting here, so
850
# shouldn't we just split the whole thing rather
851
# than doing the split again in add_one_record?
852
fields = entries[num].split('\0')
853
paths.setdefault(fields[1], []).append(fields)
855
for cur_dir in middle_files:
856
for fields in paths.get(cur_dir, []):
857
# offset by 1 because of the opening '\0'
858
# consider changing fields_to_entry to avoid the
860
entry = fields_to_entry(fields[1:])
861
found.setdefault(cur_dir, []).append(entry)
863
# Now we have split up everything into pre, middle, and post, and
864
# we have handled everything that fell in 'middle'.
865
# We add 'post' first, so that we prefer to seek towards the
866
# beginning, so that we will tend to go as early as we need, and
867
# then only seek forward after that.
869
pending.append((after, high, post))
871
pending.append((low, start-1, pre))
875
def _bisect_recursive(self, paths):
876
"""Bisect for entries for all paths and their children.
878
This will use bisect to find all records for the supplied paths. It
879
will then continue to bisect for any records which are marked as
880
directories. (and renames?)
882
:param paths: A sorted list of (dir, name) pairs
883
eg: [('', 'a'), ('', 'f'), ('a/b', 'c')]
884
:return: A dictionary mapping (dir, name, file_id) => [tree_info]
886
# Map from (dir, name, file_id) => [tree_info]
889
found_dir_names = set()
891
# Directories that have been read
892
processed_dirs = set()
893
# Get the ball rolling with the first bisect for all entries.
894
newly_found = self._bisect(paths)
897
# Directories that need to be read
899
paths_to_search = set()
900
for entry_list in newly_found.itervalues():
901
for dir_name_id, trees_info in entry_list:
902
found[dir_name_id] = trees_info
903
found_dir_names.add(dir_name_id[:2])
905
for tree_info in trees_info:
906
minikind = tree_info[0]
909
# We already processed this one as a directory,
910
# we don't need to do the extra work again.
912
subdir, name, file_id = dir_name_id
913
path = osutils.pathjoin(subdir, name)
915
if path not in processed_dirs:
916
pending_dirs.add(path)
917
elif minikind == 'r':
918
# Rename, we need to directly search the target
919
# which is contained in the fingerprint column
920
dir_name = osutils.split(tree_info[1])
921
if dir_name[0] in pending_dirs:
922
# This entry will be found in the dir search
924
if dir_name not in found_dir_names:
925
paths_to_search.add(tree_info[1])
926
# Now we have a list of paths to look for directly, and
927
# directory blocks that need to be read.
928
# newly_found is mixing the keys between (dir, name) and path
929
# entries, but that is okay, because we only really care about the
931
newly_found = self._bisect(sorted(paths_to_search))
932
newly_found.update(self._bisect_dirblocks(sorted(pending_dirs)))
933
processed_dirs.update(pending_dirs)
936
def _discard_merge_parents(self):
937
"""Discard any parents trees beyond the first.
939
Note that if this fails the dirstate is corrupted.
941
After this function returns the dirstate contains 2 trees, neither of
944
self._read_header_if_needed()
945
parents = self.get_parent_ids()
948
# only require all dirblocks if we are doing a full-pass removal.
949
self._read_dirblocks_if_needed()
950
dead_patterns = set([('a', 'r'), ('a', 'a'), ('r', 'r'), ('r', 'a')])
951
def iter_entries_removable():
952
for block in self._dirblocks:
953
deleted_positions = []
954
for pos, entry in enumerate(block[1]):
956
if (entry[1][0][0], entry[1][1][0]) in dead_patterns:
957
deleted_positions.append(pos)
958
if deleted_positions:
959
if len(deleted_positions) == len(block[1]):
962
for pos in reversed(deleted_positions):
964
# if the first parent is a ghost:
965
if parents[0] in self.get_ghosts():
966
empty_parent = [DirState.NULL_PARENT_DETAILS]
967
for entry in iter_entries_removable():
968
entry[1][1:] = empty_parent
970
for entry in iter_entries_removable():
974
self._parents = [parents[0]]
975
self._dirblock_state = DirState.IN_MEMORY_MODIFIED
976
self._header_state = DirState.IN_MEMORY_MODIFIED
978
def _empty_parent_info(self):
979
return [DirState.NULL_PARENT_DETAILS] * (len(self._parents) -
982
def _ensure_block(self, parent_block_index, parent_row_index, dirname):
983
"""Ensure a block for dirname exists.
985
This function exists to let callers which know that there is a
986
directory dirname ensure that the block for it exists. This block can
987
fail to exist because of demand loading, or because a directory had no
988
children. In either case it is not an error. It is however an error to
989
call this if there is no parent entry for the directory, and thus the
990
function requires the coordinates of such an entry to be provided.
992
The root row is special cased and can be indicated with a parent block
995
:param parent_block_index: The index of the block in which dirname's row
997
:param parent_row_index: The index in the parent block where the row
999
:param dirname: The utf8 dirname to ensure there is a block for.
1000
:return: The index for the block.
1002
if dirname == '' and parent_row_index == 0 and parent_block_index == 0:
1003
# This is the signature of the root row, and the
1004
# contents-of-root row is always index 1
1006
# the basename of the directory must be the end of its full name.
1007
if not (parent_block_index == -1 and
1008
parent_block_index == -1 and dirname == ''):
1009
if not dirname.endswith(
1010
self._dirblocks[parent_block_index][1][parent_row_index][0][1]):
1011
raise AssertionError("bad dirname %r" % dirname)
1012
block_index, present = self._find_block_index_from_key((dirname, '', ''))
1014
## In future, when doing partial parsing, this should load and
1015
# populate the entire block.
1016
self._dirblocks.insert(block_index, (dirname, []))
1019
def _entries_to_current_state(self, new_entries):
1020
"""Load new_entries into self.dirblocks.
1022
Process new_entries into the current state object, making them the active
1023
state. The entries are grouped together by directory to form dirblocks.
1025
:param new_entries: A sorted list of entries. This function does not sort
1026
to prevent unneeded overhead when callers have a sorted list already.
1029
if new_entries[0][0][0:2] != ('', ''):
1030
raise AssertionError(
1031
"Missing root row %r" % (new_entries[0][0],))
1032
# The two blocks here are deliberate: the root block and the
1033
# contents-of-root block.
1034
self._dirblocks = [('', []), ('', [])]
1035
current_block = self._dirblocks[0][1]
1036
current_dirname = ''
1038
append_entry = current_block.append
1039
for entry in new_entries:
1040
if entry[0][0] != current_dirname:
1041
# new block - different dirname
1043
current_dirname = entry[0][0]
1044
self._dirblocks.append((current_dirname, current_block))
1045
append_entry = current_block.append
1046
# append the entry to the current block
1048
self._split_root_dirblock_into_contents()
1050
def _split_root_dirblock_into_contents(self):
1051
"""Split the root dirblocks into root and contents-of-root.
1053
After parsing by path, we end up with root entries and contents-of-root
1054
entries in the same block. This loop splits them out again.
1056
# The above loop leaves the "root block" entries mixed with the
1057
# "contents-of-root block". But we don't want an if check on
1058
# all entries, so instead we just fix it up here.
1059
if self._dirblocks[1] != ('', []):
1060
raise ValueError("bad dirblock start %r" % (self._dirblocks[1],))
1062
contents_of_root_block = []
1063
for entry in self._dirblocks[0][1]:
1064
if not entry[0][1]: # This is a root entry
1065
root_block.append(entry)
1067
contents_of_root_block.append(entry)
1068
self._dirblocks[0] = ('', root_block)
1069
self._dirblocks[1] = ('', contents_of_root_block)
1071
def _entries_for_path(self, path):
1072
"""Return a list with all the entries that match path for all ids."""
1073
dirname, basename = os.path.split(path)
1074
key = (dirname, basename, '')
1075
block_index, present = self._find_block_index_from_key(key)
1077
# the block which should contain path is absent.
1080
block = self._dirblocks[block_index][1]
1081
entry_index, _ = self._find_entry_index(key, block)
1082
# we may need to look at multiple entries at this path: walk while the specific_files match.
1083
while (entry_index < len(block) and
1084
block[entry_index][0][0:2] == key[0:2]):
1085
result.append(block[entry_index])
1089
def _entry_to_line(self, entry):
1090
"""Serialize entry to a NULL delimited line ready for _get_output_lines.
1092
:param entry: An entry_tuple as defined in the module docstring.
1094
entire_entry = list(entry[0])
1095
for tree_number, tree_data in enumerate(entry[1]):
1096
# (minikind, fingerprint, size, executable, tree_specific_string)
1097
entire_entry.extend(tree_data)
1098
# 3 for the key, 5 for the fields per tree.
1099
tree_offset = 3 + tree_number * 5
1101
entire_entry[tree_offset + 0] = tree_data[0]
1103
entire_entry[tree_offset + 2] = str(tree_data[2])
1105
entire_entry[tree_offset + 3] = DirState._to_yesno[tree_data[3]]
1106
return '\0'.join(entire_entry)
1108
def _fields_per_entry(self):
1109
"""How many null separated fields should be in each entry row.
1111
Each line now has an extra '\n' field which is not used
1112
so we just skip over it
1114
3 fields for the key
1115
+ number of fields per tree_data (5) * tree count
1118
tree_count = 1 + self._num_present_parents()
1119
return 3 + 5 * tree_count + 1
1121
def _find_block(self, key, add_if_missing=False):
1122
"""Return the block that key should be present in.
1124
:param key: A dirstate entry key.
1125
:return: The block tuple.
1127
block_index, present = self._find_block_index_from_key(key)
1129
if not add_if_missing:
1130
# check to see if key is versioned itself - we might want to
1131
# add it anyway, because dirs with no entries dont get a
1132
# dirblock at parse time.
1133
# This is an uncommon branch to take: most dirs have children,
1134
# and most code works with versioned paths.
1135
parent_base, parent_name = osutils.split(key[0])
1136
if not self._get_block_entry_index(parent_base, parent_name, 0)[3]:
1137
# some parent path has not been added - its an error to add
1139
raise errors.NotVersionedError(key[0:2], str(self))
1140
self._dirblocks.insert(block_index, (key[0], []))
1141
return self._dirblocks[block_index]
1143
def _find_block_index_from_key(self, key):
1144
"""Find the dirblock index for a key.
1146
:return: The block index, True if the block for the key is present.
1148
if key[0:2] == ('', ''):
1151
if (self._last_block_index is not None and
1152
self._dirblocks[self._last_block_index][0] == key[0]):
1153
return self._last_block_index, True
1156
block_index = bisect_dirblock(self._dirblocks, key[0], 1,
1157
cache=self._split_path_cache)
1158
# _right returns one-past-where-key is so we have to subtract
1159
# one to use it. we use _right here because there are two
1160
# '' blocks - the root, and the contents of root
1161
# we always have a minimum of 2 in self._dirblocks: root and
1162
# root-contents, and for '', we get 2 back, so this is
1163
# simple and correct:
1164
present = (block_index < len(self._dirblocks) and
1165
self._dirblocks[block_index][0] == key[0])
1166
self._last_block_index = block_index
1167
# Reset the entry index cache to the beginning of the block.
1168
self._last_entry_index = -1
1169
return block_index, present
1171
def _find_entry_index(self, key, block):
1172
"""Find the entry index for a key in a block.
1174
:return: The entry index, True if the entry for the key is present.
1176
len_block = len(block)
1178
if self._last_entry_index is not None:
1180
entry_index = self._last_entry_index + 1
1181
# A hit is when the key is after the last slot, and before or
1182
# equal to the next slot.
1183
if ((entry_index > 0 and block[entry_index - 1][0] < key) and
1184
key <= block[entry_index][0]):
1185
self._last_entry_index = entry_index
1186
present = (block[entry_index][0] == key)
1187
return entry_index, present
1190
entry_index = bisect.bisect_left(block, (key, []))
1191
present = (entry_index < len_block and
1192
block[entry_index][0] == key)
1193
self._last_entry_index = entry_index
1194
return entry_index, present
1197
def from_tree(tree, dir_state_filename):
1198
"""Create a dirstate from a bzr Tree.
1200
:param tree: The tree which should provide parent information and
1202
:return: a DirState object which is currently locked for writing.
1203
(it was locked by DirState.initialize)
1205
result = DirState.initialize(dir_state_filename)
1209
parent_ids = tree.get_parent_ids()
1210
num_parents = len(parent_ids)
1212
for parent_id in parent_ids:
1213
parent_tree = tree.branch.repository.revision_tree(parent_id)
1214
parent_trees.append((parent_id, parent_tree))
1215
parent_tree.lock_read()
1216
result.set_parent_trees(parent_trees, [])
1217
result.set_state_from_inventory(tree.inventory)
1219
for revid, parent_tree in parent_trees:
1220
parent_tree.unlock()
1223
# The caller won't have a chance to unlock this, so make sure we
1229
def update_by_delta(self, delta):
1230
"""Apply an inventory delta to the dirstate for tree 0
1232
:param delta: An inventory delta. See Inventory.apply_delta for
1235
self._read_dirblocks_if_needed()
1238
for old_path, new_path, file_id, inv_entry in sorted(delta, reverse=True):
1239
if (file_id in insertions) or (file_id in removals):
1240
raise AssertionError("repeated file id in delta %r" % (file_id,))
1241
if old_path is not None:
1242
old_path = old_path.encode('utf-8')
1243
removals[file_id] = old_path
1244
if new_path is not None:
1245
new_path = new_path.encode('utf-8')
1246
dirname, basename = osutils.split(new_path)
1247
key = (dirname, basename, file_id)
1248
minikind = DirState._kind_to_minikind[inv_entry.kind]
1250
fingerprint = inv_entry.reference_revision
1253
insertions[file_id] = (key, minikind, inv_entry.executable,
1254
fingerprint, new_path)
1255
# Transform moves into delete+add pairs
1256
if None not in (old_path, new_path):
1257
for child in self._iter_child_entries(0, old_path):
1258
if child[0][2] in insertions or child[0][2] in removals:
1260
child_dirname = child[0][0]
1261
child_basename = child[0][1]
1262
minikind = child[1][0][0]
1263
fingerprint = child[1][0][4]
1264
executable = child[1][0][3]
1265
old_child_path = osutils.pathjoin(child[0][0],
1267
removals[child[0][2]] = old_child_path
1268
child_suffix = child_dirname[len(old_path):]
1269
new_child_dirname = (new_path + child_suffix)
1270
key = (new_child_dirname, child_basename, child[0][2])
1271
new_child_path = os.path.join(new_child_dirname,
1273
insertions[child[0][2]] = (key, minikind, executable,
1274
fingerprint, new_child_path)
1275
self._apply_removals(removals.values())
1276
self._apply_insertions(insertions.values())
1278
def _apply_removals(self, removals):
1279
for path in sorted(removals, reverse=True):
1280
dirname, basename = osutils.split(path)
1281
block_i, entry_i, d_present, f_present = \
1282
self._get_block_entry_index(dirname, basename, 0)
1283
entry = self._dirblocks[block_i][1][entry_i]
1284
self._make_absent(entry)
1285
# See if we have a malformed delta: deleting a directory must not
1286
# leave crud behind. This increases the number of bisects needed
1287
# substantially, but deletion or renames of large numbers of paths
1288
# is rare enough it shouldn't be an issue (famous last words?) RBC
1290
block_i, entry_i, d_present, f_present = \
1291
self._get_block_entry_index(path, '', 0)
1293
# The dir block is still present in the dirstate; this could
1294
# be due to it being in a parent tree, or a corrupt delta.
1295
for child_entry in self._dirblocks[block_i][1]:
1296
if child_entry[1][0][0] not in ('r', 'a'):
1297
raise errors.InconsistentDelta(path, entry[0][2],
1298
"The file id was deleted but its children were "
1301
def _apply_insertions(self, adds):
1302
for key, minikind, executable, fingerprint, path_utf8 in sorted(adds):
1303
self.update_minimal(key, minikind, executable, fingerprint,
1304
path_utf8=path_utf8)
1306
def update_basis_by_delta(self, delta, new_revid):
1307
"""Update the parents of this tree after a commit.
1309
This gives the tree one parent, with revision id new_revid. The
1310
inventory delta is applied to the current basis tree to generate the
1311
inventory for the parent new_revid, and all other parent trees are
1314
Note that an exception during the operation of this method will leave
1315
the dirstate in a corrupt state where it should not be saved.
1317
Finally, we expect all changes to be synchronising the basis tree with
1320
:param new_revid: The new revision id for the trees parent.
1321
:param delta: An inventory delta (see apply_inventory_delta) describing
1322
the changes from the current left most parent revision to new_revid.
1324
self._read_dirblocks_if_needed()
1325
self._discard_merge_parents()
1326
if self._ghosts != []:
1327
raise NotImplementedError(self.update_basis_by_delta)
1328
if len(self._parents) == 0:
1329
# setup a blank tree, the most simple way.
1330
empty_parent = DirState.NULL_PARENT_DETAILS
1331
for entry in self._iter_entries():
1332
entry[1].append(empty_parent)
1333
self._parents.append(new_revid)
1335
self._parents[0] = new_revid
1337
delta = sorted(delta, reverse=True)
1341
# The paths this function accepts are unicode and must be encoded as we
1343
encode = cache_utf8.encode
1344
inv_to_entry = self._inv_entry_to_details
1345
# delta is now (deletes, changes), (adds) in reverse lexographical
1347
# deletes in reverse lexographic order are safe to process in situ.
1348
# renames are not, as a rename from any path could go to a path
1349
# lexographically lower, so we transform renames into delete, add pairs,
1350
# expanding them recursively as needed.
1351
# At the same time, to reduce interface friction we convert the input
1352
# inventory entries to dirstate.
1353
root_only = ('', '')
1354
for old_path, new_path, file_id, inv_entry in delta:
1355
if old_path is None:
1356
adds.append((None, encode(new_path), file_id,
1357
inv_to_entry(inv_entry), True))
1358
elif new_path is None:
1359
deletes.append((encode(old_path), None, file_id, None, True))
1360
elif (old_path, new_path) != root_only:
1362
# Because renames must preserve their children we must have
1363
# processed all relocations and removes before hand. The sort
1364
# order ensures we've examined the child paths, but we also
1365
# have to execute the removals, or the split to an add/delete
1366
# pair will result in the deleted item being reinserted, or
1367
# renamed items being reinserted twice - and possibly at the
1368
# wrong place. Splitting into a delete/add pair also simplifies
1369
# the handling of entries with ('f', ...), ('r' ...) because
1370
# the target of the 'r' is old_path here, and we add that to
1371
# deletes, meaning that the add handler does not need to check
1372
# for 'r' items on every pass.
1373
self._update_basis_apply_deletes(deletes)
1375
new_path_utf8 = encode(new_path)
1376
# Split into an add/delete pair recursively.
1377
adds.append((None, new_path_utf8, file_id,
1378
inv_to_entry(inv_entry), False))
1379
# Expunge deletes that we've seen so that deleted/renamed
1380
# children of a rename directory are handled correctly.
1381
new_deletes = reversed(list(self._iter_child_entries(1,
1383
# Remove the current contents of the tree at orig_path, and
1384
# reinsert at the correct new path.
1385
for entry in new_deletes:
1387
source_path = entry[0][0] + '/' + entry[0][1]
1389
source_path = entry[0][1]
1391
target_path = new_path_utf8 + source_path[len(old_path):]
1394
raise AssertionError("cannot rename directory to"
1396
target_path = source_path[len(old_path) + 1:]
1397
adds.append((None, target_path, entry[0][2], entry[1][1], False))
1399
(source_path, target_path, entry[0][2], None, False))
1401
(encode(old_path), new_path, file_id, None, False))
1403
# changes to just the root should not require remove/insertion
1405
changes.append((encode(old_path), encode(new_path), file_id,
1406
inv_to_entry(inv_entry)))
1408
# Finish expunging deletes/first half of renames.
1409
self._update_basis_apply_deletes(deletes)
1410
# Reinstate second half of renames and new paths.
1411
self._update_basis_apply_adds(adds)
1412
# Apply in-situ changes.
1413
self._update_basis_apply_changes(changes)
1415
self._dirblock_state = DirState.IN_MEMORY_MODIFIED
1416
self._header_state = DirState.IN_MEMORY_MODIFIED
1417
self._id_index = None
1420
def _update_basis_apply_adds(self, adds):
1421
"""Apply a sequence of adds to tree 1 during update_basis_by_delta.
1423
They may be adds, or renames that have been split into add/delete
1426
:param adds: A sequence of adds. Each add is a tuple:
1427
(None, new_path_utf8, file_id, (entry_details), real_add). real_add
1428
is False when the add is the second half of a remove-and-reinsert
1429
pair created to handle renames and deletes.
1431
# Adds are accumulated partly from renames, so can be in any input
1434
# adds is now in lexographic order, which places all parents before
1435
# their children, so we can process it linearly.
1437
for old_path, new_path, file_id, new_details, real_add in adds:
1438
# the entry for this file_id must be in tree 0.
1439
entry = self._get_entry(0, file_id, new_path)
1440
if entry[0] is None or entry[0][2] != file_id:
1441
self._changes_aborted = True
1442
raise errors.InconsistentDelta(new_path, file_id,
1443
'working tree does not contain new entry')
1444
if real_add and entry[1][1][0] not in absent:
1445
self._changes_aborted = True
1446
raise errors.InconsistentDelta(new_path, file_id,
1447
'The entry was considered to be a genuinely new record,'
1448
' but there was already an old record for it.')
1449
# We don't need to update the target of an 'r' because the handling
1450
# of renames turns all 'r' situations into a delete at the original
1452
entry[1][1] = new_details
1454
def _update_basis_apply_changes(self, changes):
1455
"""Apply a sequence of changes to tree 1 during update_basis_by_delta.
1457
:param adds: A sequence of changes. Each change is a tuple:
1458
(path_utf8, path_utf8, file_id, (entry_details))
1461
for old_path, new_path, file_id, new_details in changes:
1462
# the entry for this file_id must be in tree 0.
1463
entry = self._get_entry(0, file_id, new_path)
1464
if entry[0] is None or entry[0][2] != file_id:
1465
self._changes_aborted = True
1466
raise errors.InconsistentDelta(new_path, file_id,
1467
'working tree does not contain new entry')
1468
if (entry[1][0][0] in absent or
1469
entry[1][1][0] in absent):
1470
self._changes_aborted = True
1471
raise errors.InconsistentDelta(new_path, file_id,
1472
'changed considered absent')
1473
entry[1][1] = new_details
1475
def _update_basis_apply_deletes(self, deletes):
1476
"""Apply a sequence of deletes to tree 1 during update_basis_by_delta.
1478
They may be deletes, or renames that have been split into add/delete
1481
:param deletes: A sequence of deletes. Each delete is a tuple:
1482
(old_path_utf8, new_path_utf8, file_id, None, real_delete).
1483
real_delete is True when the desired outcome is an actual deletion
1484
rather than the rename handling logic temporarily deleting a path
1485
during the replacement of a parent.
1487
null = DirState.NULL_PARENT_DETAILS
1488
for old_path, new_path, file_id, _, real_delete in deletes:
1489
if real_delete != (new_path is None):
1490
raise AssertionError("bad delete delta")
1491
# the entry for this file_id must be in tree 1.
1492
dirname, basename = osutils.split(old_path)
1493
block_index, entry_index, dir_present, file_present = \
1494
self._get_block_entry_index(dirname, basename, 1)
1495
if not file_present:
1496
self._changes_aborted = True
1497
raise errors.InconsistentDelta(old_path, file_id,
1498
'basis tree does not contain removed entry')
1499
entry = self._dirblocks[block_index][1][entry_index]
1500
if entry[0][2] != file_id:
1501
self._changes_aborted = True
1502
raise errors.InconsistentDelta(old_path, file_id,
1503
'mismatched file_id in tree 1')
1505
if entry[1][0][0] != 'a':
1506
self._changes_aborted = True
1507
raise errors.InconsistentDelta(old_path, file_id,
1508
'This was marked as a real delete, but the WT state'
1509
' claims that it still exists and is versioned.')
1510
del self._dirblocks[block_index][1][entry_index]
1512
if entry[1][0][0] == 'a':
1513
self._changes_aborted = True
1514
raise errors.InconsistentDelta(old_path, file_id,
1515
'The entry was considered a rename, but the source path'
1516
' is marked as absent.')
1517
# For whatever reason, we were asked to rename an entry
1518
# that was originally marked as deleted. This could be
1519
# because we are renaming the parent directory, and the WT
1520
# current state has the file marked as deleted.
1521
elif entry[1][0][0] == 'r':
1522
# implement the rename
1523
del self._dirblocks[block_index][1][entry_index]
1525
# it is being resurrected here, so blank it out temporarily.
1526
self._dirblocks[block_index][1][entry_index][1][1] = null
1528
def _observed_sha1(self, entry, sha1, stat_value,
1529
_stat_to_minikind=_stat_to_minikind, _pack_stat=pack_stat):
1530
"""Note the sha1 of a file.
1532
:param entry: The entry the sha1 is for.
1533
:param sha1: The observed sha1.
1534
:param stat_value: The os.lstat for the file.
1537
minikind = _stat_to_minikind[stat_value.st_mode & 0170000]
1541
packed_stat = _pack_stat(stat_value)
1543
if self._cutoff_time is None:
1544
self._sha_cutoff_time()
1545
if (stat_value.st_mtime < self._cutoff_time
1546
and stat_value.st_ctime < self._cutoff_time):
1547
entry[1][0] = ('f', sha1, entry[1][0][2], entry[1][0][3],
1549
self._dirblock_state = DirState.IN_MEMORY_MODIFIED
1551
def _sha_cutoff_time(self):
1552
"""Return cutoff time.
1554
Files modified more recently than this time are at risk of being
1555
undetectably modified and so can't be cached.
1557
# Cache the cutoff time as long as we hold a lock.
1558
# time.time() isn't super expensive (approx 3.38us), but
1559
# when you call it 50,000 times it adds up.
1560
# For comparison, os.lstat() costs 7.2us if it is hot.
1561
self._cutoff_time = int(time.time()) - 3
1562
return self._cutoff_time
1564
def _lstat(self, abspath, entry):
1565
"""Return the os.lstat value for this path."""
1566
return os.lstat(abspath)
1568
def _sha1_file_and_mutter(self, abspath):
1569
# when -Dhashcache is turned on, this is monkey-patched in to log
1571
trace.mutter("dirstate sha1 " + abspath)
1572
return osutils.sha_file_by_name(abspath)
1574
def _is_executable(self, mode, old_executable):
1575
"""Is this file executable?"""
1576
return bool(S_IEXEC & mode)
1578
def _is_executable_win32(self, mode, old_executable):
1579
"""On win32 the executable bit is stored in the dirstate."""
1580
return old_executable
1582
if sys.platform == 'win32':
1583
_is_executable = _is_executable_win32
1585
def _read_link(self, abspath, old_link):
1586
"""Read the target of a symlink"""
1587
# TODO: jam 200700301 On Win32, this could just return the value
1588
# already in memory. However, this really needs to be done at a
1589
# higher level, because there either won't be anything on disk,
1590
# or the thing on disk will be a file.
1591
return os.readlink(abspath.encode(osutils._fs_enc))
1593
def get_ghosts(self):
1594
"""Return a list of the parent tree revision ids that are ghosts."""
1595
self._read_header_if_needed()
1598
def get_lines(self):
1599
"""Serialise the entire dirstate to a sequence of lines."""
1600
if (self._header_state == DirState.IN_MEMORY_UNMODIFIED and
1601
self._dirblock_state == DirState.IN_MEMORY_UNMODIFIED):
1602
# read whats on disk.
1603
self._state_file.seek(0)
1604
return self._state_file.readlines()
1606
lines.append(self._get_parents_line(self.get_parent_ids()))
1607
lines.append(self._get_ghosts_line(self._ghosts))
1608
# append the root line which is special cased
1609
lines.extend(map(self._entry_to_line, self._iter_entries()))
1610
return self._get_output_lines(lines)
1612
def _get_ghosts_line(self, ghost_ids):
1613
"""Create a line for the state file for ghost information."""
1614
return '\0'.join([str(len(ghost_ids))] + ghost_ids)
1616
def _get_parents_line(self, parent_ids):
1617
"""Create a line for the state file for parents information."""
1618
return '\0'.join([str(len(parent_ids))] + parent_ids)
1620
def _get_fields_to_entry(self):
1621
"""Get a function which converts entry fields into a entry record.
1623
This handles size and executable, as well as parent records.
1625
:return: A function which takes a list of fields, and returns an
1626
appropriate record for storing in memory.
1628
# This is intentionally unrolled for performance
1629
num_present_parents = self._num_present_parents()
1630
if num_present_parents == 0:
1631
def fields_to_entry_0_parents(fields, _int=int):
1632
path_name_file_id_key = (fields[0], fields[1], fields[2])
1633
return (path_name_file_id_key, [
1635
fields[3], # minikind
1636
fields[4], # fingerprint
1637
_int(fields[5]), # size
1638
fields[6] == 'y', # executable
1639
fields[7], # packed_stat or revision_id
1641
return fields_to_entry_0_parents
1642
elif num_present_parents == 1:
1643
def fields_to_entry_1_parent(fields, _int=int):
1644
path_name_file_id_key = (fields[0], fields[1], fields[2])
1645
return (path_name_file_id_key, [
1647
fields[3], # minikind
1648
fields[4], # fingerprint
1649
_int(fields[5]), # size
1650
fields[6] == 'y', # executable
1651
fields[7], # packed_stat or revision_id
1654
fields[8], # minikind
1655
fields[9], # fingerprint
1656
_int(fields[10]), # size
1657
fields[11] == 'y', # executable
1658
fields[12], # packed_stat or revision_id
1661
return fields_to_entry_1_parent
1662
elif num_present_parents == 2:
1663
def fields_to_entry_2_parents(fields, _int=int):
1664
path_name_file_id_key = (fields[0], fields[1], fields[2])
1665
return (path_name_file_id_key, [
1667
fields[3], # minikind
1668
fields[4], # fingerprint
1669
_int(fields[5]), # size
1670
fields[6] == 'y', # executable
1671
fields[7], # packed_stat or revision_id
1674
fields[8], # minikind
1675
fields[9], # fingerprint
1676
_int(fields[10]), # size
1677
fields[11] == 'y', # executable
1678
fields[12], # packed_stat or revision_id
1681
fields[13], # minikind
1682
fields[14], # fingerprint
1683
_int(fields[15]), # size
1684
fields[16] == 'y', # executable
1685
fields[17], # packed_stat or revision_id
1688
return fields_to_entry_2_parents
1690
def fields_to_entry_n_parents(fields, _int=int):
1691
path_name_file_id_key = (fields[0], fields[1], fields[2])
1692
trees = [(fields[cur], # minikind
1693
fields[cur+1], # fingerprint
1694
_int(fields[cur+2]), # size
1695
fields[cur+3] == 'y', # executable
1696
fields[cur+4], # stat or revision_id
1697
) for cur in xrange(3, len(fields)-1, 5)]
1698
return path_name_file_id_key, trees
1699
return fields_to_entry_n_parents
1701
def get_parent_ids(self):
1702
"""Return a list of the parent tree ids for the directory state."""
1703
self._read_header_if_needed()
1704
return list(self._parents)
1706
def _get_block_entry_index(self, dirname, basename, tree_index):
1707
"""Get the coordinates for a path in the state structure.
1709
:param dirname: The utf8 dirname to lookup.
1710
:param basename: The utf8 basename to lookup.
1711
:param tree_index: The index of the tree for which this lookup should
1713
:return: A tuple describing where the path is located, or should be
1714
inserted. The tuple contains four fields: the block index, the row
1715
index, the directory is present (boolean), the entire path is
1716
present (boolean). There is no guarantee that either
1717
coordinate is currently reachable unless the found field for it is
1718
True. For instance, a directory not present in the searched tree
1719
may be returned with a value one greater than the current highest
1720
block offset. The directory present field will always be True when
1721
the path present field is True. The directory present field does
1722
NOT indicate that the directory is present in the searched tree,
1723
rather it indicates that there are at least some files in some
1726
self._read_dirblocks_if_needed()
1727
key = dirname, basename, ''
1728
block_index, present = self._find_block_index_from_key(key)
1730
# no such directory - return the dir index and 0 for the row.
1731
return block_index, 0, False, False
1732
block = self._dirblocks[block_index][1] # access the entries only
1733
entry_index, present = self._find_entry_index(key, block)
1734
# linear search through entries at this path to find the one
1736
while entry_index < len(block) and block[entry_index][0][1] == basename:
1737
if block[entry_index][1][tree_index][0] not in 'ar':
1738
# neither absent or relocated
1739
return block_index, entry_index, True, True
1741
return block_index, entry_index, True, False
1743
def _get_entry(self, tree_index, fileid_utf8=None, path_utf8=None, include_deleted=False):
1744
"""Get the dirstate entry for path in tree tree_index.
1746
If either file_id or path is supplied, it is used as the key to lookup.
1747
If both are supplied, the fastest lookup is used, and an error is
1748
raised if they do not both point at the same row.
1750
:param tree_index: The index of the tree we wish to locate this path
1751
in. If the path is present in that tree, the entry containing its
1752
details is returned, otherwise (None, None) is returned
1753
0 is the working tree, higher indexes are successive parent
1755
:param fileid_utf8: A utf8 file_id to look up.
1756
:param path_utf8: An utf8 path to be looked up.
1757
:param include_deleted: If True, and performing a lookup via
1758
fileid_utf8 rather than path_utf8, return an entry for deleted
1760
:return: The dirstate entry tuple for path, or (None, None)
1762
self._read_dirblocks_if_needed()
1763
if path_utf8 is not None:
1764
if type(path_utf8) is not str:
1765
raise AssertionError('path_utf8 is not a str: %s %s'
1766
% (type(path_utf8), path_utf8))
1767
# path lookups are faster
1768
dirname, basename = osutils.split(path_utf8)
1769
block_index, entry_index, dir_present, file_present = \
1770
self._get_block_entry_index(dirname, basename, tree_index)
1771
if not file_present:
1773
entry = self._dirblocks[block_index][1][entry_index]
1774
if not (entry[0][2] and entry[1][tree_index][0] not in ('a', 'r')):
1775
raise AssertionError('unversioned entry?')
1777
if entry[0][2] != fileid_utf8:
1778
self._changes_aborted = True
1779
raise errors.BzrError('integrity error ? : mismatching'
1780
' tree_index, file_id and path')
1783
possible_keys = self._get_id_index().get(fileid_utf8, None)
1784
if not possible_keys:
1786
for key in possible_keys:
1787
block_index, present = \
1788
self._find_block_index_from_key(key)
1789
# strange, probably indicates an out of date
1790
# id index - for now, allow this.
1793
# WARNING: DO not change this code to use _get_block_entry_index
1794
# as that function is not suitable: it does not use the key
1795
# to lookup, and thus the wrong coordinates are returned.
1796
block = self._dirblocks[block_index][1]
1797
entry_index, present = self._find_entry_index(key, block)
1799
entry = self._dirblocks[block_index][1][entry_index]
1800
if entry[1][tree_index][0] in 'fdlt':
1801
# this is the result we are looking for: the
1802
# real home of this file_id in this tree.
1804
if entry[1][tree_index][0] == 'a':
1805
# there is no home for this entry in this tree
1809
if entry[1][tree_index][0] != 'r':
1810
raise AssertionError(
1811
"entry %r has invalid minikind %r for tree %r" \
1813
entry[1][tree_index][0],
1815
real_path = entry[1][tree_index][1]
1816
return self._get_entry(tree_index, fileid_utf8=fileid_utf8,
1817
path_utf8=real_path)
1821
def initialize(cls, path):
1822
"""Create a new dirstate on path.
1824
The new dirstate will be an empty tree - that is it has no parents,
1825
and only a root node - which has id ROOT_ID.
1827
:param path: The name of the file for the dirstate.
1828
:return: A write-locked DirState object.
1830
# This constructs a new DirState object on a path, sets the _state_file
1831
# to a new empty file for that path. It then calls _set_data() with our
1832
# stock empty dirstate information - a root with ROOT_ID, no children,
1833
# and no parents. Finally it calls save() to ensure that this data will
1836
# root dir and root dir contents with no children.
1837
empty_tree_dirblocks = [('', []), ('', [])]
1838
# a new root directory, with a NULLSTAT.
1839
empty_tree_dirblocks[0][1].append(
1840
(('', '', inventory.ROOT_ID), [
1841
('d', '', 0, False, DirState.NULLSTAT),
1845
result._set_data([], empty_tree_dirblocks)
1853
def _inv_entry_to_details(inv_entry):
1854
"""Convert an inventory entry (from a revision tree) to state details.
1856
:param inv_entry: An inventory entry whose sha1 and link targets can be
1857
relied upon, and which has a revision set.
1858
:return: A details tuple - the details for a single tree at a path +
1861
kind = inv_entry.kind
1862
minikind = DirState._kind_to_minikind[kind]
1863
tree_data = inv_entry.revision
1864
if kind == 'directory':
1868
elif kind == 'symlink':
1869
# We don't support non-ascii targets for symlinks yet.
1870
fingerprint = str(inv_entry.symlink_target or '')
1873
elif kind == 'file':
1874
fingerprint = inv_entry.text_sha1 or ''
1875
size = inv_entry.text_size or 0
1876
executable = inv_entry.executable
1877
elif kind == 'tree-reference':
1878
fingerprint = inv_entry.reference_revision or ''
1882
raise Exception("can't pack %s" % inv_entry)
1883
return (minikind, fingerprint, size, executable, tree_data)
1885
def _iter_child_entries(self, tree_index, path_utf8):
1886
"""Iterate over all the entries that are children of path_utf.
1888
This only returns entries that are present (not in 'a', 'r') in
1889
tree_index. tree_index data is not refreshed, so if tree 0 is used,
1890
results may differ from that obtained if paths were statted to
1891
determine what ones were directories.
1893
Asking for the children of a non-directory will return an empty
1897
next_pending_dirs = [path_utf8]
1899
while next_pending_dirs:
1900
pending_dirs = next_pending_dirs
1901
next_pending_dirs = []
1902
for path in pending_dirs:
1903
block_index, present = self._find_block_index_from_key(
1905
if block_index == 0:
1907
if len(self._dirblocks) == 1:
1908
# asked for the children of the root with no other
1912
# children of a non-directory asked for.
1914
block = self._dirblocks[block_index]
1915
for entry in block[1]:
1916
kind = entry[1][tree_index][0]
1917
if kind not in absent:
1921
path = entry[0][0] + '/' + entry[0][1]
1924
next_pending_dirs.append(path)
1926
def _iter_entries(self):
1927
"""Iterate over all the entries in the dirstate.
1929
Each yelt item is an entry in the standard format described in the
1930
docstring of bzrlib.dirstate.
1932
self._read_dirblocks_if_needed()
1933
for directory in self._dirblocks:
1934
for entry in directory[1]:
1937
def _get_id_index(self):
1938
"""Get an id index of self._dirblocks."""
1939
if self._id_index is None:
1941
for key, tree_details in self._iter_entries():
1942
id_index.setdefault(key[2], set()).add(key)
1943
self._id_index = id_index
1944
return self._id_index
1946
def _get_output_lines(self, lines):
1947
"""Format lines for final output.
1949
:param lines: A sequence of lines containing the parents list and the
1952
output_lines = [DirState.HEADER_FORMAT_3]
1953
lines.append('') # a final newline
1954
inventory_text = '\0\n\0'.join(lines)
1955
output_lines.append('crc32: %s\n' % (zlib.crc32(inventory_text),))
1956
# -3, 1 for num parents, 1 for ghosts, 1 for final newline
1957
num_entries = len(lines)-3
1958
output_lines.append('num_entries: %s\n' % (num_entries,))
1959
output_lines.append(inventory_text)
1962
def _make_deleted_row(self, fileid_utf8, parents):
1963
"""Return a deleted row for fileid_utf8."""
1964
return ('/', 'RECYCLED.BIN', 'file', fileid_utf8, 0, DirState.NULLSTAT,
1967
def _num_present_parents(self):
1968
"""The number of parent entries in each record row."""
1969
return len(self._parents) - len(self._ghosts)
1973
"""Construct a DirState on the file at path path.
1975
:return: An unlocked DirState object, associated with the given path.
1977
result = DirState(path)
1980
def _read_dirblocks_if_needed(self):
1981
"""Read in all the dirblocks from the file if they are not in memory.
1983
This populates self._dirblocks, and sets self._dirblock_state to
1984
IN_MEMORY_UNMODIFIED. It is not currently ready for incremental block
1987
self._read_header_if_needed()
1988
if self._dirblock_state == DirState.NOT_IN_MEMORY:
1989
_read_dirblocks(self)
1991
def _read_header(self):
1992
"""This reads in the metadata header, and the parent ids.
1994
After reading in, the file should be positioned at the null
1995
just before the start of the first record in the file.
1997
:return: (expected crc checksum, number of entries, parent list)
1999
self._read_prelude()
2000
parent_line = self._state_file.readline()
2001
info = parent_line.split('\0')
2002
num_parents = int(info[0])
2003
self._parents = info[1:-1]
2004
ghost_line = self._state_file.readline()
2005
info = ghost_line.split('\0')
2006
num_ghosts = int(info[1])
2007
self._ghosts = info[2:-1]
2008
self._header_state = DirState.IN_MEMORY_UNMODIFIED
2009
self._end_of_header = self._state_file.tell()
2011
def _read_header_if_needed(self):
2012
"""Read the header of the dirstate file if needed."""
2013
# inline this as it will be called a lot
2014
if not self._lock_token:
2015
raise errors.ObjectNotLocked(self)
2016
if self._header_state == DirState.NOT_IN_MEMORY:
2019
def _read_prelude(self):
2020
"""Read in the prelude header of the dirstate file.
2022
This only reads in the stuff that is not connected to the crc
2023
checksum. The position will be correct to read in the rest of
2024
the file and check the checksum after this point.
2025
The next entry in the file should be the number of parents,
2026
and their ids. Followed by a newline.
2028
header = self._state_file.readline()
2029
if header != DirState.HEADER_FORMAT_3:
2030
raise errors.BzrError(
2031
'invalid header line: %r' % (header,))
2032
crc_line = self._state_file.readline()
2033
if not crc_line.startswith('crc32: '):
2034
raise errors.BzrError('missing crc32 checksum: %r' % crc_line)
2035
self.crc_expected = int(crc_line[len('crc32: '):-1])
2036
num_entries_line = self._state_file.readline()
2037
if not num_entries_line.startswith('num_entries: '):
2038
raise errors.BzrError('missing num_entries line')
2039
self._num_entries = int(num_entries_line[len('num_entries: '):-1])
2041
def sha1_from_stat(self, path, stat_result, _pack_stat=pack_stat):
2042
"""Find a sha1 given a stat lookup."""
2043
return self._get_packed_stat_index().get(_pack_stat(stat_result), None)
2045
def _get_packed_stat_index(self):
2046
"""Get a packed_stat index of self._dirblocks."""
2047
if self._packed_stat_index is None:
2049
for key, tree_details in self._iter_entries():
2050
if tree_details[0][0] == 'f':
2051
index[tree_details[0][4]] = tree_details[0][1]
2052
self._packed_stat_index = index
2053
return self._packed_stat_index
2056
"""Save any pending changes created during this session.
2058
We reuse the existing file, because that prevents race conditions with
2059
file creation, and use oslocks on it to prevent concurrent modification
2060
and reads - because dirstate's incremental data aggregation is not
2061
compatible with reading a modified file, and replacing a file in use by
2062
another process is impossible on Windows.
2064
A dirstate in read only mode should be smart enough though to validate
2065
that the file has not changed, and otherwise discard its cache and
2066
start over, to allow for fine grained read lock duration, so 'status'
2067
wont block 'commit' - for example.
2069
if self._changes_aborted:
2070
# Should this be a warning? For now, I'm expecting that places that
2071
# mark it inconsistent will warn, making a warning here redundant.
2072
trace.mutter('Not saving DirState because '
2073
'_changes_aborted is set.')
2075
if (self._header_state == DirState.IN_MEMORY_MODIFIED or
2076
self._dirblock_state == DirState.IN_MEMORY_MODIFIED):
2078
grabbed_write_lock = False
2079
if self._lock_state != 'w':
2080
grabbed_write_lock, new_lock = self._lock_token.temporary_write_lock()
2081
# Switch over to the new lock, as the old one may be closed.
2082
# TODO: jam 20070315 We should validate the disk file has
2083
# not changed contents. Since temporary_write_lock may
2084
# not be an atomic operation.
2085
self._lock_token = new_lock
2086
self._state_file = new_lock.f
2087
if not grabbed_write_lock:
2088
# We couldn't grab a write lock, so we switch back to a read one
2091
self._state_file.seek(0)
2092
self._state_file.writelines(self.get_lines())
2093
self._state_file.truncate()
2094
self._state_file.flush()
2095
self._header_state = DirState.IN_MEMORY_UNMODIFIED
2096
self._dirblock_state = DirState.IN_MEMORY_UNMODIFIED
2098
if grabbed_write_lock:
2099
self._lock_token = self._lock_token.restore_read_lock()
2100
self._state_file = self._lock_token.f
2101
# TODO: jam 20070315 We should validate the disk file has
2102
# not changed contents. Since restore_read_lock may
2103
# not be an atomic operation.
2105
def _set_data(self, parent_ids, dirblocks):
2106
"""Set the full dirstate data in memory.
2108
This is an internal function used to completely replace the objects
2109
in memory state. It puts the dirstate into state 'full-dirty'.
2111
:param parent_ids: A list of parent tree revision ids.
2112
:param dirblocks: A list containing one tuple for each directory in the
2113
tree. Each tuple contains the directory path and a list of entries
2114
found in that directory.
2116
# our memory copy is now authoritative.
2117
self._dirblocks = dirblocks
2118
self._header_state = DirState.IN_MEMORY_MODIFIED
2119
self._dirblock_state = DirState.IN_MEMORY_MODIFIED
2120
self._parents = list(parent_ids)
2121
self._id_index = None
2122
self._packed_stat_index = None
2124
def set_path_id(self, path, new_id):
2125
"""Change the id of path to new_id in the current working tree.
2127
:param path: The path inside the tree to set - '' is the root, 'foo'
2128
is the path foo in the root.
2129
:param new_id: The new id to assign to the path. This must be a utf8
2130
file id (not unicode, and not None).
2132
self._read_dirblocks_if_needed()
2134
# TODO: logic not written
2135
raise NotImplementedError(self.set_path_id)
2136
# TODO: check new id is unique
2137
entry = self._get_entry(0, path_utf8=path)
2138
if entry[0][2] == new_id:
2139
# Nothing to change.
2141
# mark the old path absent, and insert a new root path
2142
self._make_absent(entry)
2143
self.update_minimal(('', '', new_id), 'd',
2144
path_utf8='', packed_stat=entry[1][0][4])
2145
self._dirblock_state = DirState.IN_MEMORY_MODIFIED
2146
if self._id_index is not None:
2147
self._id_index.setdefault(new_id, set()).add(entry[0])
2149
def set_parent_trees(self, trees, ghosts):
2150
"""Set the parent trees for the dirstate.
2152
:param trees: A list of revision_id, tree tuples. tree must be provided
2153
even if the revision_id refers to a ghost: supply an empty tree in
2155
:param ghosts: A list of the revision_ids that are ghosts at the time
2158
# TODO: generate a list of parent indexes to preserve to save
2159
# processing specific parent trees. In the common case one tree will
2160
# be preserved - the left most parent.
2161
# TODO: if the parent tree is a dirstate, we might want to walk them
2162
# all by path in parallel for 'optimal' common-case performance.
2163
# generate new root row.
2164
self._read_dirblocks_if_needed()
2165
# TODO future sketch: Examine the existing parents to generate a change
2166
# map and then walk the new parent trees only, mapping them into the
2167
# dirstate. Walk the dirstate at the same time to remove unreferenced
2170
# sketch: loop over all entries in the dirstate, cherry picking
2171
# entries from the parent trees, if they are not ghost trees.
2172
# after we finish walking the dirstate, all entries not in the dirstate
2173
# are deletes, so we want to append them to the end as per the design
2174
# discussions. So do a set difference on ids with the parents to
2175
# get deletes, and add them to the end.
2176
# During the update process we need to answer the following questions:
2177
# - find other keys containing a fileid in order to create cross-path
2178
# links. We dont't trivially use the inventory from other trees
2179
# because this leads to either double touching, or to accessing
2181
# - find other keys containing a path
2182
# We accumulate each entry via this dictionary, including the root
2185
# we could do parallel iterators, but because file id data may be
2186
# scattered throughout, we dont save on index overhead: we have to look
2187
# at everything anyway. We can probably save cycles by reusing parent
2188
# data and doing an incremental update when adding an additional
2189
# parent, but for now the common cases are adding a new parent (merge),
2190
# and replacing completely (commit), and commit is more common: so
2191
# optimise merge later.
2193
# ---- start generation of full tree mapping data
2194
# what trees should we use?
2195
parent_trees = [tree for rev_id, tree in trees if rev_id not in ghosts]
2196
# how many trees do we end up with
2197
parent_count = len(parent_trees)
2199
# one: the current tree
2200
for entry in self._iter_entries():
2201
# skip entries not in the current tree
2202
if entry[1][0][0] in 'ar': # absent, relocated
2204
by_path[entry[0]] = [entry[1][0]] + \
2205
[DirState.NULL_PARENT_DETAILS] * parent_count
2206
id_index[entry[0][2]] = set([entry[0]])
2208
# now the parent trees:
2209
for tree_index, tree in enumerate(parent_trees):
2210
# the index is off by one, adjust it.
2211
tree_index = tree_index + 1
2212
# when we add new locations for a fileid we need these ranges for
2213
# any fileid in this tree as we set the by_path[id] to:
2214
# already_processed_tree_details + new_details + new_location_suffix
2215
# the suffix is from tree_index+1:parent_count+1.
2216
new_location_suffix = [DirState.NULL_PARENT_DETAILS] * (parent_count - tree_index)
2217
# now stitch in all the entries from this tree
2218
for path, entry in tree.inventory.iter_entries_by_dir():
2219
# here we process each trees details for each item in the tree.
2220
# we first update any existing entries for the id at other paths,
2221
# then we either create or update the entry for the id at the
2222
# right path, and finally we add (if needed) a mapping from
2223
# file_id to this path. We do it in this order to allow us to
2224
# avoid checking all known paths for the id when generating a
2225
# new entry at this path: by adding the id->path mapping last,
2226
# all the mappings are valid and have correct relocation
2227
# records where needed.
2228
file_id = entry.file_id
2229
path_utf8 = path.encode('utf8')
2230
dirname, basename = osutils.split(path_utf8)
2231
new_entry_key = (dirname, basename, file_id)
2232
# tree index consistency: All other paths for this id in this tree
2233
# index must point to the correct path.
2234
for entry_key in id_index.setdefault(file_id, set()):
2235
# TODO:PROFILING: It might be faster to just update
2236
# rather than checking if we need to, and then overwrite
2237
# the one we are located at.
2238
if entry_key != new_entry_key:
2239
# this file id is at a different path in one of the
2240
# other trees, so put absent pointers there
2241
# This is the vertical axis in the matrix, all pointing
2243
by_path[entry_key][tree_index] = ('r', path_utf8, 0, False, '')
2244
# by path consistency: Insert into an existing path record (trivial), or
2245
# add a new one with relocation pointers for the other tree indexes.
2246
if new_entry_key in id_index[file_id]:
2247
# there is already an entry where this data belongs, just insert it.
2248
by_path[new_entry_key][tree_index] = \
2249
self._inv_entry_to_details(entry)
2251
# add relocated entries to the horizontal axis - this row
2252
# mapping from path,id. We need to look up the correct path
2253
# for the indexes from 0 to tree_index -1
2255
for lookup_index in xrange(tree_index):
2256
# boundary case: this is the first occurence of file_id
2257
# so there are no id_indexs, possibly take this out of
2259
if not len(id_index[file_id]):
2260
new_details.append(DirState.NULL_PARENT_DETAILS)
2262
# grab any one entry, use it to find the right path.
2263
# TODO: optimise this to reduce memory use in highly
2264
# fragmented situations by reusing the relocation
2266
a_key = iter(id_index[file_id]).next()
2267
if by_path[a_key][lookup_index][0] in ('r', 'a'):
2268
# its a pointer or missing statement, use it as is.
2269
new_details.append(by_path[a_key][lookup_index])
2271
# we have the right key, make a pointer to it.
2272
real_path = ('/'.join(a_key[0:2])).strip('/')
2273
new_details.append(('r', real_path, 0, False, ''))
2274
new_details.append(self._inv_entry_to_details(entry))
2275
new_details.extend(new_location_suffix)
2276
by_path[new_entry_key] = new_details
2277
id_index[file_id].add(new_entry_key)
2278
# --- end generation of full tree mappings
2280
# sort and output all the entries
2281
new_entries = self._sort_entries(by_path.items())
2282
self._entries_to_current_state(new_entries)
2283
self._parents = [rev_id for rev_id, tree in trees]
2284
self._ghosts = list(ghosts)
2285
self._header_state = DirState.IN_MEMORY_MODIFIED
2286
self._dirblock_state = DirState.IN_MEMORY_MODIFIED
2287
self._id_index = id_index
2289
def _sort_entries(self, entry_list):
2290
"""Given a list of entries, sort them into the right order.
2292
This is done when constructing a new dirstate from trees - normally we
2293
try to keep everything in sorted blocks all the time, but sometimes
2294
it's easier to sort after the fact.
2297
# sort by: directory parts, file name, file id
2298
return entry[0][0].split('/'), entry[0][1], entry[0][2]
2299
return sorted(entry_list, key=_key)
2301
def set_state_from_inventory(self, new_inv):
2302
"""Set new_inv as the current state.
2304
This API is called by tree transform, and will usually occur with
2305
existing parent trees.
2307
:param new_inv: The inventory object to set current state from.
2309
if 'evil' in debug.debug_flags:
2310
trace.mutter_callsite(1,
2311
"set_state_from_inventory called; please mutate the tree instead")
2312
self._read_dirblocks_if_needed()
2314
# Two iterators: current data and new data, both in dirblock order.
2315
# We zip them together, which tells about entries that are new in the
2316
# inventory, or removed in the inventory, or present in both and
2319
# You might think we could just synthesize a new dirstate directly
2320
# since we're processing it in the right order. However, we need to
2321
# also consider there may be any number of parent trees and relocation
2322
# pointers, and we don't want to duplicate that here.
2323
new_iterator = new_inv.iter_entries_by_dir()
2324
# we will be modifying the dirstate, so we need a stable iterator. In
2325
# future we might write one, for now we just clone the state into a
2326
# list - which is a shallow copy.
2327
old_iterator = iter(list(self._iter_entries()))
2328
# both must have roots so this is safe:
2329
current_new = new_iterator.next()
2330
current_old = old_iterator.next()
2331
def advance(iterator):
2333
return iterator.next()
2334
except StopIteration:
2336
while current_new or current_old:
2337
# skip entries in old that are not really there
2338
if current_old and current_old[1][0][0] in 'ar':
2339
# relocated or absent
2340
current_old = advance(old_iterator)
2343
# convert new into dirblock style
2344
new_path_utf8 = current_new[0].encode('utf8')
2345
new_dirname, new_basename = osutils.split(new_path_utf8)
2346
new_id = current_new[1].file_id
2347
new_entry_key = (new_dirname, new_basename, new_id)
2348
current_new_minikind = \
2349
DirState._kind_to_minikind[current_new[1].kind]
2350
if current_new_minikind == 't':
2351
fingerprint = current_new[1].reference_revision or ''
2353
# We normally only insert or remove records, or update
2354
# them when it has significantly changed. Then we want to
2355
# erase its fingerprint. Unaffected records should
2356
# normally not be updated at all.
2359
# for safety disable variables
2360
new_path_utf8 = new_dirname = new_basename = new_id = \
2361
new_entry_key = None
2362
# 5 cases, we dont have a value that is strictly greater than everything, so
2363
# we make both end conditions explicit
2365
# old is finished: insert current_new into the state.
2366
self.update_minimal(new_entry_key, current_new_minikind,
2367
executable=current_new[1].executable,
2368
path_utf8=new_path_utf8, fingerprint=fingerprint)
2369
current_new = advance(new_iterator)
2370
elif not current_new:
2372
self._make_absent(current_old)
2373
current_old = advance(old_iterator)
2374
elif new_entry_key == current_old[0]:
2375
# same - common case
2376
# We're looking at the same path and id in both the dirstate
2377
# and inventory, so just need to update the fields in the
2378
# dirstate from the one in the inventory.
2379
# TODO: update the record if anything significant has changed.
2380
# the minimal required trigger is if the execute bit or cached
2382
if (current_old[1][0][3] != current_new[1].executable or
2383
current_old[1][0][0] != current_new_minikind):
2384
self.update_minimal(current_old[0], current_new_minikind,
2385
executable=current_new[1].executable,
2386
path_utf8=new_path_utf8, fingerprint=fingerprint)
2387
# both sides are dealt with, move on
2388
current_old = advance(old_iterator)
2389
current_new = advance(new_iterator)
2390
elif (cmp_by_dirs(new_dirname, current_old[0][0]) < 0
2391
or (new_dirname == current_old[0][0]
2392
and new_entry_key[1:] < current_old[0][1:])):
2394
# add a entry for this and advance new
2395
self.update_minimal(new_entry_key, current_new_minikind,
2396
executable=current_new[1].executable,
2397
path_utf8=new_path_utf8, fingerprint=fingerprint)
2398
current_new = advance(new_iterator)
2400
# we've advanced past the place where the old key would be,
2401
# without seeing it in the new list. so it must be gone.
2402
self._make_absent(current_old)
2403
current_old = advance(old_iterator)
2404
self._dirblock_state = DirState.IN_MEMORY_MODIFIED
2405
self._id_index = None
2406
self._packed_stat_index = None
2408
def _make_absent(self, current_old):
2409
"""Mark current_old - an entry - as absent for tree 0.
2411
:return: True if this was the last details entry for the entry key:
2412
that is, if the underlying block has had the entry removed, thus
2413
shrinking in length.
2415
# build up paths that this id will be left at after the change is made,
2416
# so we can update their cross references in tree 0
2417
all_remaining_keys = set()
2418
# Dont check the working tree, because it's going.
2419
for details in current_old[1][1:]:
2420
if details[0] not in 'ar': # absent, relocated
2421
all_remaining_keys.add(current_old[0])
2422
elif details[0] == 'r': # relocated
2423
# record the key for the real path.
2424
all_remaining_keys.add(tuple(osutils.split(details[1])) + (current_old[0][2],))
2425
# absent rows are not present at any path.
2426
last_reference = current_old[0] not in all_remaining_keys
2428
# the current row consists entire of the current item (being marked
2429
# absent), and relocated or absent entries for the other trees:
2430
# Remove it, its meaningless.
2431
block = self._find_block(current_old[0])
2432
entry_index, present = self._find_entry_index(current_old[0], block[1])
2434
raise AssertionError('could not find entry for %s' % (current_old,))
2435
block[1].pop(entry_index)
2436
# if we have an id_index in use, remove this key from it for this id.
2437
if self._id_index is not None:
2438
self._id_index[current_old[0][2]].remove(current_old[0])
2439
# update all remaining keys for this id to record it as absent. The
2440
# existing details may either be the record we are marking as deleted
2441
# (if there were other trees with the id present at this path), or may
2443
for update_key in all_remaining_keys:
2444
update_block_index, present = \
2445
self._find_block_index_from_key(update_key)
2447
raise AssertionError('could not find block for %s' % (update_key,))
2448
update_entry_index, present = \
2449
self._find_entry_index(update_key, self._dirblocks[update_block_index][1])
2451
raise AssertionError('could not find entry for %s' % (update_key,))
2452
update_tree_details = self._dirblocks[update_block_index][1][update_entry_index][1]
2453
# it must not be absent at the moment
2454
if update_tree_details[0][0] == 'a': # absent
2455
raise AssertionError('bad row %r' % (update_tree_details,))
2456
update_tree_details[0] = DirState.NULL_PARENT_DETAILS
2457
self._dirblock_state = DirState.IN_MEMORY_MODIFIED
2458
return last_reference
2460
def update_minimal(self, key, minikind, executable=False, fingerprint='',
2461
packed_stat=None, size=0, path_utf8=None):
2462
"""Update an entry to the state in tree 0.
2464
This will either create a new entry at 'key' or update an existing one.
2465
It also makes sure that any other records which might mention this are
2468
:param key: (dir, name, file_id) for the new entry
2469
:param minikind: The type for the entry ('f' == 'file', 'd' ==
2471
:param executable: Should the executable bit be set?
2472
:param fingerprint: Simple fingerprint for new entry: sha1 for files,
2473
referenced revision id for subtrees, etc.
2474
:param packed_stat: Packed stat value for new entry.
2475
:param size: Size information for new entry
2476
:param path_utf8: key[0] + '/' + key[1], just passed in to avoid doing
2479
If packed_stat and fingerprint are not given, they're invalidated in
2482
block = self._find_block(key)[1]
2483
if packed_stat is None:
2484
packed_stat = DirState.NULLSTAT
2485
# XXX: Some callers pass '' as the packed_stat, and it seems to be
2486
# sometimes present in the dirstate - this seems oddly inconsistent.
2488
entry_index, present = self._find_entry_index(key, block)
2489
new_details = (minikind, fingerprint, size, executable, packed_stat)
2490
id_index = self._get_id_index()
2492
# new entry, synthesis cross reference here,
2493
existing_keys = id_index.setdefault(key[2], set())
2494
if not existing_keys:
2495
# not currently in the state, simplest case
2496
new_entry = key, [new_details] + self._empty_parent_info()
2498
# present at one or more existing other paths.
2499
# grab one of them and use it to generate parent
2500
# relocation/absent entries.
2501
new_entry = key, [new_details]
2502
for other_key in existing_keys:
2503
# change the record at other to be a pointer to this new
2504
# record. The loop looks similar to the change to
2505
# relocations when updating an existing record but its not:
2506
# the test for existing kinds is different: this can be
2507
# factored out to a helper though.
2508
other_block_index, present = self._find_block_index_from_key(other_key)
2510
raise AssertionError('could not find block for %s' % (other_key,))
2511
other_entry_index, present = self._find_entry_index(other_key,
2512
self._dirblocks[other_block_index][1])
2514
raise AssertionError('could not find entry for %s' % (other_key,))
2515
if path_utf8 is None:
2516
raise AssertionError('no path')
2517
self._dirblocks[other_block_index][1][other_entry_index][1][0] = \
2518
('r', path_utf8, 0, False, '')
2520
num_present_parents = self._num_present_parents()
2521
for lookup_index in xrange(1, num_present_parents + 1):
2522
# grab any one entry, use it to find the right path.
2523
# TODO: optimise this to reduce memory use in highly
2524
# fragmented situations by reusing the relocation
2526
update_block_index, present = \
2527
self._find_block_index_from_key(other_key)
2529
raise AssertionError('could not find block for %s' % (other_key,))
2530
update_entry_index, present = \
2531
self._find_entry_index(other_key, self._dirblocks[update_block_index][1])
2533
raise AssertionError('could not find entry for %s' % (other_key,))
2534
update_details = self._dirblocks[update_block_index][1][update_entry_index][1][lookup_index]
2535
if update_details[0] in 'ar': # relocated, absent
2536
# its a pointer or absent in lookup_index's tree, use
2538
new_entry[1].append(update_details)
2540
# we have the right key, make a pointer to it.
2541
pointer_path = osutils.pathjoin(*other_key[0:2])
2542
new_entry[1].append(('r', pointer_path, 0, False, ''))
2543
block.insert(entry_index, new_entry)
2544
existing_keys.add(key)
2546
# Does the new state matter?
2547
block[entry_index][1][0] = new_details
2548
# parents cannot be affected by what we do.
2549
# other occurences of this id can be found
2550
# from the id index.
2552
# tree index consistency: All other paths for this id in this tree
2553
# index must point to the correct path. We have to loop here because
2554
# we may have passed entries in the state with this file id already
2555
# that were absent - where parent entries are - and they need to be
2556
# converted to relocated.
2557
if path_utf8 is None:
2558
raise AssertionError('no path')
2559
for entry_key in id_index.setdefault(key[2], set()):
2560
# TODO:PROFILING: It might be faster to just update
2561
# rather than checking if we need to, and then overwrite
2562
# the one we are located at.
2563
if entry_key != key:
2564
# this file id is at a different path in one of the
2565
# other trees, so put absent pointers there
2566
# This is the vertical axis in the matrix, all pointing
2568
block_index, present = self._find_block_index_from_key(entry_key)
2570
raise AssertionError('not present: %r', entry_key)
2571
entry_index, present = self._find_entry_index(entry_key, self._dirblocks[block_index][1])
2573
raise AssertionError('not present: %r', entry_key)
2574
self._dirblocks[block_index][1][entry_index][1][0] = \
2575
('r', path_utf8, 0, False, '')
2576
# add a containing dirblock if needed.
2577
if new_details[0] == 'd':
2578
subdir_key = (osutils.pathjoin(*key[0:2]), '', '')
2579
block_index, present = self._find_block_index_from_key(subdir_key)
2581
self._dirblocks.insert(block_index, (subdir_key[0], []))
2583
self._dirblock_state = DirState.IN_MEMORY_MODIFIED
2585
def _validate(self):
2586
"""Check that invariants on the dirblock are correct.
2588
This can be useful in debugging; it shouldn't be necessary in
2591
This must be called with a lock held.
2593
# NOTE: This must always raise AssertionError not just assert,
2594
# otherwise it may not behave properly under python -O
2596
# TODO: All entries must have some content that's not 'a' or 'r',
2597
# otherwise it could just be removed.
2599
# TODO: All relocations must point directly to a real entry.
2601
# TODO: No repeated keys.
2604
from pprint import pformat
2605
self._read_dirblocks_if_needed()
2606
if len(self._dirblocks) > 0:
2607
if not self._dirblocks[0][0] == '':
2608
raise AssertionError(
2609
"dirblocks don't start with root block:\n" + \
2610
pformat(self._dirblocks))
2611
if len(self._dirblocks) > 1:
2612
if not self._dirblocks[1][0] == '':
2613
raise AssertionError(
2614
"dirblocks missing root directory:\n" + \
2615
pformat(self._dirblocks))
2616
# the dirblocks are sorted by their path components, name, and dir id
2617
dir_names = [d[0].split('/')
2618
for d in self._dirblocks[1:]]
2619
if dir_names != sorted(dir_names):
2620
raise AssertionError(
2621
"dir names are not in sorted order:\n" + \
2622
pformat(self._dirblocks) + \
2625
for dirblock in self._dirblocks:
2626
# within each dirblock, the entries are sorted by filename and
2628
for entry in dirblock[1]:
2629
if dirblock[0] != entry[0][0]:
2630
raise AssertionError(
2632
"doesn't match directory name in\n%r" %
2633
(entry, pformat(dirblock)))
2634
if dirblock[1] != sorted(dirblock[1]):
2635
raise AssertionError(
2636
"dirblock for %r is not sorted:\n%s" % \
2637
(dirblock[0], pformat(dirblock)))
2639
def check_valid_parent():
2640
"""Check that the current entry has a valid parent.
2642
This makes sure that the parent has a record,
2643
and that the parent isn't marked as "absent" in the
2644
current tree. (It is invalid to have a non-absent file in an absent
2647
if entry[0][0:2] == ('', ''):
2648
# There should be no parent for the root row
2650
parent_entry = self._get_entry(tree_index, path_utf8=entry[0][0])
2651
if parent_entry == (None, None):
2652
raise AssertionError(
2653
"no parent entry for: %s in tree %s"
2654
% (this_path, tree_index))
2655
if parent_entry[1][tree_index][0] != 'd':
2656
raise AssertionError(
2657
"Parent entry for %s is not marked as a valid"
2658
" directory. %s" % (this_path, parent_entry,))
2660
# For each file id, for each tree: either
2661
# the file id is not present at all; all rows with that id in the
2662
# key have it marked as 'absent'
2663
# OR the file id is present under exactly one name; any other entries
2664
# that mention that id point to the correct name.
2666
# We check this with a dict per tree pointing either to the present
2667
# name, or None if absent.
2668
tree_count = self._num_present_parents() + 1
2669
id_path_maps = [dict() for i in range(tree_count)]
2670
# Make sure that all renamed entries point to the correct location.
2671
for entry in self._iter_entries():
2672
file_id = entry[0][2]
2673
this_path = osutils.pathjoin(entry[0][0], entry[0][1])
2674
if len(entry[1]) != tree_count:
2675
raise AssertionError(
2676
"wrong number of entry details for row\n%s" \
2677
",\nexpected %d" % \
2678
(pformat(entry), tree_count))
2679
absent_positions = 0
2680
for tree_index, tree_state in enumerate(entry[1]):
2681
this_tree_map = id_path_maps[tree_index]
2682
minikind = tree_state[0]
2683
if minikind in 'ar':
2684
absent_positions += 1
2685
# have we seen this id before in this column?
2686
if file_id in this_tree_map:
2687
previous_path, previous_loc = this_tree_map[file_id]
2688
# any later mention of this file must be consistent with
2689
# what was said before
2691
if previous_path is not None:
2692
raise AssertionError(
2693
"file %s is absent in row %r but also present " \
2695
(file_id, entry, previous_path))
2696
elif minikind == 'r':
2697
target_location = tree_state[1]
2698
if previous_path != target_location:
2699
raise AssertionError(
2700
"file %s relocation in row %r but also at %r" \
2701
% (file_id, entry, previous_path))
2703
# a file, directory, etc - may have been previously
2704
# pointed to by a relocation, which must point here
2705
if previous_path != this_path:
2706
raise AssertionError(
2707
"entry %r inconsistent with previous path %r "
2709
(entry, previous_path, previous_loc))
2710
check_valid_parent()
2713
# absent; should not occur anywhere else
2714
this_tree_map[file_id] = None, this_path
2715
elif minikind == 'r':
2716
# relocation, must occur at expected location
2717
this_tree_map[file_id] = tree_state[1], this_path
2719
this_tree_map[file_id] = this_path, this_path
2720
check_valid_parent()
2721
if absent_positions == tree_count:
2722
raise AssertionError(
2723
"entry %r has no data for any tree." % (entry,))
2725
def _wipe_state(self):
2726
"""Forget all state information about the dirstate."""
2727
self._header_state = DirState.NOT_IN_MEMORY
2728
self._dirblock_state = DirState.NOT_IN_MEMORY
2729
self._changes_aborted = False
2732
self._dirblocks = []
2733
self._id_index = None
2734
self._packed_stat_index = None
2735
self._end_of_header = None
2736
self._cutoff_time = None
2737
self._split_path_cache = {}
2739
def lock_read(self):
2740
"""Acquire a read lock on the dirstate."""
2741
if self._lock_token is not None:
2742
raise errors.LockContention(self._lock_token)
2743
# TODO: jam 20070301 Rather than wiping completely, if the blocks are
2744
# already in memory, we could read just the header and check for
2745
# any modification. If not modified, we can just leave things
2747
self._lock_token = lock.ReadLock(self._filename)
2748
self._lock_state = 'r'
2749
self._state_file = self._lock_token.f
2752
def lock_write(self):
2753
"""Acquire a write lock on the dirstate."""
2754
if self._lock_token is not None:
2755
raise errors.LockContention(self._lock_token)
2756
# TODO: jam 20070301 Rather than wiping completely, if the blocks are
2757
# already in memory, we could read just the header and check for
2758
# any modification. If not modified, we can just leave things
2760
self._lock_token = lock.WriteLock(self._filename)
2761
self._lock_state = 'w'
2762
self._state_file = self._lock_token.f
2766
"""Drop any locks held on the dirstate."""
2767
if self._lock_token is None:
2768
raise errors.LockNotHeld(self)
2769
# TODO: jam 20070301 Rather than wiping completely, if the blocks are
2770
# already in memory, we could read just the header and check for
2771
# any modification. If not modified, we can just leave things
2773
self._state_file = None
2774
self._lock_state = None
2775
self._lock_token.unlock()
2776
self._lock_token = None
2777
self._split_path_cache = {}
2779
def _requires_lock(self):
2780
"""Check that a lock is currently held by someone on the dirstate."""
2781
if not self._lock_token:
2782
raise errors.ObjectNotLocked(self)
2785
def py_update_entry(state, entry, abspath, stat_value,
2786
_stat_to_minikind=DirState._stat_to_minikind,
2787
_pack_stat=pack_stat):
2788
"""Update the entry based on what is actually on disk.
2790
This function only calculates the sha if it needs to - if the entry is
2791
uncachable, or clearly different to the first parent's entry, no sha
2792
is calculated, and None is returned.
2794
:param state: The dirstate this entry is in.
2795
:param entry: This is the dirblock entry for the file in question.
2796
:param abspath: The path on disk for this file.
2797
:param stat_value: The stat value done on the path.
2798
:return: None, or The sha1 hexdigest of the file (40 bytes) or link
2799
target of a symlink.
2802
minikind = _stat_to_minikind[stat_value.st_mode & 0170000]
2806
packed_stat = _pack_stat(stat_value)
2807
(saved_minikind, saved_link_or_sha1, saved_file_size,
2808
saved_executable, saved_packed_stat) = entry[1][0]
2810
if (minikind == saved_minikind
2811
and packed_stat == saved_packed_stat):
2812
# The stat hasn't changed since we saved, so we can re-use the
2817
# size should also be in packed_stat
2818
if saved_file_size == stat_value.st_size:
2819
return saved_link_or_sha1
2821
# If we have gotten this far, that means that we need to actually
2822
# process this entry.
2825
executable = state._is_executable(stat_value.st_mode,
2827
if state._cutoff_time is None:
2828
state._sha_cutoff_time()
2829
if (stat_value.st_mtime < state._cutoff_time
2830
and stat_value.st_ctime < state._cutoff_time
2831
and len(entry[1]) > 1
2832
and entry[1][1][0] != 'a'):
2833
# Could check for size changes for further optimised
2834
# avoidance of sha1's. However the most prominent case of
2835
# over-shaing is during initial add, which this catches.
2836
link_or_sha1 = state._sha1_file(abspath)
2837
entry[1][0] = ('f', link_or_sha1, stat_value.st_size,
2838
executable, packed_stat)
2840
entry[1][0] = ('f', '', stat_value.st_size,
2841
executable, DirState.NULLSTAT)
2842
elif minikind == 'd':
2844
entry[1][0] = ('d', '', 0, False, packed_stat)
2845
if saved_minikind != 'd':
2846
# This changed from something into a directory. Make sure we
2847
# have a directory block for it. This doesn't happen very
2848
# often, so this doesn't have to be super fast.
2849
block_index, entry_index, dir_present, file_present = \
2850
state._get_block_entry_index(entry[0][0], entry[0][1], 0)
2851
state._ensure_block(block_index, entry_index,
2852
osutils.pathjoin(entry[0][0], entry[0][1]))
2853
elif minikind == 'l':
2854
link_or_sha1 = state._read_link(abspath, saved_link_or_sha1)
2855
if state._cutoff_time is None:
2856
state._sha_cutoff_time()
2857
if (stat_value.st_mtime < state._cutoff_time
2858
and stat_value.st_ctime < state._cutoff_time):
2859
entry[1][0] = ('l', link_or_sha1, stat_value.st_size,
2862
entry[1][0] = ('l', '', stat_value.st_size,
2863
False, DirState.NULLSTAT)
2864
state._dirblock_state = DirState.IN_MEMORY_MODIFIED
2866
update_entry = py_update_entry
2869
class ProcessEntryPython(object):
2871
__slots__ = ["old_dirname_to_file_id", "new_dirname_to_file_id", "uninteresting",
2872
"last_source_parent", "last_target_parent", "include_unchanged",
2873
"use_filesystem_for_exec", "utf8_decode", "searched_specific_files",
2874
"search_specific_files", "state", "source_index", "target_index",
2875
"want_unversioned", "tree"]
2877
def __init__(self, include_unchanged, use_filesystem_for_exec,
2878
search_specific_files, state, source_index, target_index,
2879
want_unversioned, tree):
2880
self.old_dirname_to_file_id = {}
2881
self.new_dirname_to_file_id = {}
2882
# Just a sentry, so that _process_entry can say that this
2883
# record is handled, but isn't interesting to process (unchanged)
2884
self.uninteresting = object()
2885
# Using a list so that we can access the values and change them in
2886
# nested scope. Each one is [path, file_id, entry]
2887
self.last_source_parent = [None, None]
2888
self.last_target_parent = [None, None]
2889
self.include_unchanged = include_unchanged
2890
self.use_filesystem_for_exec = use_filesystem_for_exec
2891
self.utf8_decode = cache_utf8._utf8_decode
2892
# for all search_indexs in each path at or under each element of
2893
# search_specific_files, if the detail is relocated: add the id, and add the
2894
# relocated path as one to search if its not searched already. If the
2895
# detail is not relocated, add the id.
2896
self.searched_specific_files = set()
2897
self.search_specific_files = search_specific_files
2899
self.source_index = source_index
2900
self.target_index = target_index
2901
self.want_unversioned = want_unversioned
2904
def _process_entry(self, entry, path_info, pathjoin=osutils.pathjoin):
2905
"""Compare an entry and real disk to generate delta information.
2907
:param path_info: top_relpath, basename, kind, lstat, abspath for
2908
the path of entry. If None, then the path is considered absent.
2909
(Perhaps we should pass in a concrete entry for this ?)
2910
Basename is returned as a utf8 string because we expect this
2911
tuple will be ignored, and don't want to take the time to
2913
:return: None if these don't match
2914
A tuple of information about the change, or
2915
the object 'uninteresting' if these match, but are
2916
basically identical.
2918
if self.source_index is None:
2919
source_details = DirState.NULL_PARENT_DETAILS
2921
source_details = entry[1][self.source_index]
2922
target_details = entry[1][self.target_index]
2923
target_minikind = target_details[0]
2924
if path_info is not None and target_minikind in 'fdlt':
2925
if not (self.target_index == 0):
2926
raise AssertionError()
2927
link_or_sha1 = update_entry(self.state, entry,
2928
abspath=path_info[4], stat_value=path_info[3])
2929
# The entry may have been modified by update_entry
2930
target_details = entry[1][self.target_index]
2931
target_minikind = target_details[0]
2934
file_id = entry[0][2]
2935
source_minikind = source_details[0]
2936
if source_minikind in 'fdltr' and target_minikind in 'fdlt':
2937
# claimed content in both: diff
2938
# r | fdlt | | add source to search, add id path move and perform
2939
# | | | diff check on source-target
2940
# r | fdlt | a | dangling file that was present in the basis.
2942
if source_minikind in 'r':
2943
# add the source to the search path to find any children it
2944
# has. TODO ? : only add if it is a container ?
2945
if not osutils.is_inside_any(self.searched_specific_files,
2947
self.search_specific_files.add(source_details[1])
2948
# generate the old path; this is needed for stating later
2950
old_path = source_details[1]
2951
old_dirname, old_basename = os.path.split(old_path)
2952
path = pathjoin(entry[0][0], entry[0][1])
2953
old_entry = self.state._get_entry(self.source_index,
2955
# update the source details variable to be the real
2957
if old_entry == (None, None):
2958
raise errors.CorruptDirstate(self.state._filename,
2959
"entry '%s/%s' is considered renamed from %r"
2960
" but source does not exist\n"
2961
"entry: %s" % (entry[0][0], entry[0][1], old_path, entry))
2962
source_details = old_entry[1][self.source_index]
2963
source_minikind = source_details[0]
2965
old_dirname = entry[0][0]
2966
old_basename = entry[0][1]
2967
old_path = path = None
2968
if path_info is None:
2969
# the file is missing on disk, show as removed.
2970
content_change = True
2974
# source and target are both versioned and disk file is present.
2975
target_kind = path_info[2]
2976
if target_kind == 'directory':
2978
old_path = path = pathjoin(old_dirname, old_basename)
2979
self.new_dirname_to_file_id[path] = file_id
2980
if source_minikind != 'd':
2981
content_change = True
2983
# directories have no fingerprint
2984
content_change = False
2986
elif target_kind == 'file':
2987
if source_minikind != 'f':
2988
content_change = True
2990
# If the size is the same, check the sha:
2991
if target_details[2] == source_details[2]:
2992
if link_or_sha1 is None:
2994
file_obj = file(path_info[4], 'rb')
2996
statvalue = os.fstat(file_obj.fileno())
2997
link_or_sha1 = osutils.sha_file(file_obj)
3000
self.state._observed_sha1(entry, link_or_sha1,
3002
content_change = (link_or_sha1 != source_details[1])
3004
# Size changed, so must be different
3005
content_change = True
3006
# Target details is updated at update_entry time
3007
if self.use_filesystem_for_exec:
3008
# We don't need S_ISREG here, because we are sure
3009
# we are dealing with a file.
3010
target_exec = bool(stat.S_IEXEC & path_info[3].st_mode)
3012
target_exec = target_details[3]
3013
elif target_kind == 'symlink':
3014
if source_minikind != 'l':
3015
content_change = True
3017
content_change = (link_or_sha1 != source_details[1])
3019
elif target_kind == 'tree-reference':
3020
if source_minikind != 't':
3021
content_change = True
3023
content_change = False
3026
raise Exception, "unknown kind %s" % path_info[2]
3027
if source_minikind == 'd':
3029
old_path = path = pathjoin(old_dirname, old_basename)
3030
self.old_dirname_to_file_id[old_path] = file_id
3031
# parent id is the entry for the path in the target tree
3032
if old_dirname == self.last_source_parent[0]:
3033
source_parent_id = self.last_source_parent[1]
3036
source_parent_id = self.old_dirname_to_file_id[old_dirname]
3038
source_parent_entry = self.state._get_entry(self.source_index,
3039
path_utf8=old_dirname)
3040
source_parent_id = source_parent_entry[0][2]
3041
if source_parent_id == entry[0][2]:
3042
# This is the root, so the parent is None
3043
source_parent_id = None
3045
self.last_source_parent[0] = old_dirname
3046
self.last_source_parent[1] = source_parent_id
3047
new_dirname = entry[0][0]
3048
if new_dirname == self.last_target_parent[0]:
3049
target_parent_id = self.last_target_parent[1]
3052
target_parent_id = self.new_dirname_to_file_id[new_dirname]
3054
# TODO: We don't always need to do the lookup, because the
3055
# parent entry will be the same as the source entry.
3056
target_parent_entry = self.state._get_entry(self.target_index,
3057
path_utf8=new_dirname)
3058
if target_parent_entry == (None, None):
3059
raise AssertionError(
3060
"Could not find target parent in wt: %s\nparent of: %s"
3061
% (new_dirname, entry))
3062
target_parent_id = target_parent_entry[0][2]
3063
if target_parent_id == entry[0][2]:
3064
# This is the root, so the parent is None
3065
target_parent_id = None
3067
self.last_target_parent[0] = new_dirname
3068
self.last_target_parent[1] = target_parent_id
3070
source_exec = source_details[3]
3071
if (self.include_unchanged
3073
or source_parent_id != target_parent_id
3074
or old_basename != entry[0][1]
3075
or source_exec != target_exec
3077
if old_path is None:
3078
old_path = path = pathjoin(old_dirname, old_basename)
3079
old_path_u = self.utf8_decode(old_path)[0]
3082
old_path_u = self.utf8_decode(old_path)[0]
3083
if old_path == path:
3086
path_u = self.utf8_decode(path)[0]
3087
source_kind = DirState._minikind_to_kind[source_minikind]
3088
return (entry[0][2],
3089
(old_path_u, path_u),
3092
(source_parent_id, target_parent_id),
3093
(self.utf8_decode(old_basename)[0], self.utf8_decode(entry[0][1])[0]),
3094
(source_kind, target_kind),
3095
(source_exec, target_exec))
3097
return self.uninteresting
3098
elif source_minikind in 'a' and target_minikind in 'fdlt':
3099
# looks like a new file
3100
path = pathjoin(entry[0][0], entry[0][1])
3101
# parent id is the entry for the path in the target tree
3102
# TODO: these are the same for an entire directory: cache em.
3103
parent_id = self.state._get_entry(self.target_index,
3104
path_utf8=entry[0][0])[0][2]
3105
if parent_id == entry[0][2]:
3107
if path_info is not None:
3109
if self.use_filesystem_for_exec:
3110
# We need S_ISREG here, because we aren't sure if this
3113
stat.S_ISREG(path_info[3].st_mode)
3114
and stat.S_IEXEC & path_info[3].st_mode)
3116
target_exec = target_details[3]
3117
return (entry[0][2],
3118
(None, self.utf8_decode(path)[0]),
3122
(None, self.utf8_decode(entry[0][1])[0]),
3123
(None, path_info[2]),
3124
(None, target_exec))
3126
# Its a missing file, report it as such.
3127
return (entry[0][2],
3128
(None, self.utf8_decode(path)[0]),
3132
(None, self.utf8_decode(entry[0][1])[0]),
3135
elif source_minikind in 'fdlt' and target_minikind in 'a':
3136
# unversioned, possibly, or possibly not deleted: we dont care.
3137
# if its still on disk, *and* theres no other entry at this
3138
# path [we dont know this in this routine at the moment -
3139
# perhaps we should change this - then it would be an unknown.
3140
old_path = pathjoin(entry[0][0], entry[0][1])
3141
# parent id is the entry for the path in the target tree
3142
parent_id = self.state._get_entry(self.source_index, path_utf8=entry[0][0])[0][2]
3143
if parent_id == entry[0][2]:
3145
return (entry[0][2],
3146
(self.utf8_decode(old_path)[0], None),
3150
(self.utf8_decode(entry[0][1])[0], None),
3151
(DirState._minikind_to_kind[source_minikind], None),
3152
(source_details[3], None))
3153
elif source_minikind in 'fdlt' and target_minikind in 'r':
3154
# a rename; could be a true rename, or a rename inherited from
3155
# a renamed parent. TODO: handle this efficiently. Its not
3156
# common case to rename dirs though, so a correct but slow
3157
# implementation will do.
3158
if not osutils.is_inside_any(self.searched_specific_files, target_details[1]):
3159
self.search_specific_files.add(target_details[1])
3160
elif source_minikind in 'ra' and target_minikind in 'ra':
3161
# neither of the selected trees contain this file,
3162
# so skip over it. This is not currently directly tested, but
3163
# is indirectly via test_too_much.TestCommands.test_conflicts.
3166
raise AssertionError("don't know how to compare "
3167
"source_minikind=%r, target_minikind=%r"
3168
% (source_minikind, target_minikind))
3169
## import pdb;pdb.set_trace()
3175
def iter_changes(self):
3176
"""Iterate over the changes."""
3177
utf8_decode = cache_utf8._utf8_decode
3178
_cmp_by_dirs = cmp_by_dirs
3179
_process_entry = self._process_entry
3180
uninteresting = self.uninteresting
3181
search_specific_files = self.search_specific_files
3182
searched_specific_files = self.searched_specific_files
3183
splitpath = osutils.splitpath
3185
# compare source_index and target_index at or under each element of search_specific_files.
3186
# follow the following comparison table. Note that we only want to do diff operations when
3187
# the target is fdl because thats when the walkdirs logic will have exposed the pathinfo
3191
# Source | Target | disk | action
3192
# r | fdlt | | add source to search, add id path move and perform
3193
# | | | diff check on source-target
3194
# r | fdlt | a | dangling file that was present in the basis.
3196
# r | a | | add source to search
3198
# r | r | | this path is present in a non-examined tree, skip.
3199
# r | r | a | this path is present in a non-examined tree, skip.
3200
# a | fdlt | | add new id
3201
# a | fdlt | a | dangling locally added file, skip
3202
# a | a | | not present in either tree, skip
3203
# a | a | a | not present in any tree, skip
3204
# a | r | | not present in either tree at this path, skip as it
3205
# | | | may not be selected by the users list of paths.
3206
# a | r | a | not present in either tree at this path, skip as it
3207
# | | | may not be selected by the users list of paths.
3208
# fdlt | fdlt | | content in both: diff them
3209
# fdlt | fdlt | a | deleted locally, but not unversioned - show as deleted ?
3210
# fdlt | a | | unversioned: output deleted id for now
3211
# fdlt | a | a | unversioned and deleted: output deleted id
3212
# fdlt | r | | relocated in this tree, so add target to search.
3213
# | | | Dont diff, we will see an r,fd; pair when we reach
3214
# | | | this id at the other path.
3215
# fdlt | r | a | relocated in this tree, so add target to search.
3216
# | | | Dont diff, we will see an r,fd; pair when we reach
3217
# | | | this id at the other path.
3219
# TODO: jam 20070516 - Avoid the _get_entry lookup overhead by
3220
# keeping a cache of directories that we have seen.
3222
while search_specific_files:
3223
# TODO: the pending list should be lexically sorted? the
3224
# interface doesn't require it.
3225
current_root = search_specific_files.pop()
3226
current_root_unicode = current_root.decode('utf8')
3227
searched_specific_files.add(current_root)
3228
# process the entries for this containing directory: the rest will be
3229
# found by their parents recursively.
3230
root_entries = self.state._entries_for_path(current_root)
3231
root_abspath = self.tree.abspath(current_root_unicode)
3233
root_stat = os.lstat(root_abspath)
3235
if e.errno == errno.ENOENT:
3236
# the path does not exist: let _process_entry know that.
3237
root_dir_info = None
3239
# some other random error: hand it up.
3242
root_dir_info = ('', current_root,
3243
osutils.file_kind_from_stat_mode(root_stat.st_mode), root_stat,
3245
if root_dir_info[2] == 'directory':
3246
if self.tree._directory_is_tree_reference(
3247
current_root.decode('utf8')):
3248
root_dir_info = root_dir_info[:2] + \
3249
('tree-reference',) + root_dir_info[3:]
3251
if not root_entries and not root_dir_info:
3252
# this specified path is not present at all, skip it.
3254
path_handled = False
3255
for entry in root_entries:
3256
result = _process_entry(entry, root_dir_info)
3257
if result is not None:
3259
if result is not uninteresting:
3261
if self.want_unversioned and not path_handled and root_dir_info:
3262
new_executable = bool(
3263
stat.S_ISREG(root_dir_info[3].st_mode)
3264
and stat.S_IEXEC & root_dir_info[3].st_mode)
3266
(None, current_root_unicode),
3270
(None, splitpath(current_root_unicode)[-1]),
3271
(None, root_dir_info[2]),
3272
(None, new_executable)
3274
initial_key = (current_root, '', '')
3275
block_index, _ = self.state._find_block_index_from_key(initial_key)
3276
if block_index == 0:
3277
# we have processed the total root already, but because the
3278
# initial key matched it we should skip it here.
3280
if root_dir_info and root_dir_info[2] == 'tree-reference':
3281
current_dir_info = None
3283
dir_iterator = osutils._walkdirs_utf8(root_abspath, prefix=current_root)
3285
current_dir_info = dir_iterator.next()
3287
# on win32, python2.4 has e.errno == ERROR_DIRECTORY, but
3288
# python 2.5 has e.errno == EINVAL,
3289
# and e.winerror == ERROR_DIRECTORY
3290
e_winerror = getattr(e, 'winerror', None)
3291
win_errors = (ERROR_DIRECTORY, ERROR_PATH_NOT_FOUND)
3292
# there may be directories in the inventory even though
3293
# this path is not a file on disk: so mark it as end of
3295
if e.errno in (errno.ENOENT, errno.ENOTDIR, errno.EINVAL):
3296
current_dir_info = None
3297
elif (sys.platform == 'win32'
3298
and (e.errno in win_errors
3299
or e_winerror in win_errors)):
3300
current_dir_info = None
3304
if current_dir_info[0][0] == '':
3305
# remove .bzr from iteration
3306
bzr_index = bisect.bisect_left(current_dir_info[1], ('.bzr',))
3307
if current_dir_info[1][bzr_index][0] != '.bzr':
3308
raise AssertionError()
3309
del current_dir_info[1][bzr_index]
3310
# walk until both the directory listing and the versioned metadata
3312
if (block_index < len(self.state._dirblocks) and
3313
osutils.is_inside(current_root, self.state._dirblocks[block_index][0])):
3314
current_block = self.state._dirblocks[block_index]
3316
current_block = None
3317
while (current_dir_info is not None or
3318
current_block is not None):
3319
if (current_dir_info and current_block
3320
and current_dir_info[0][0] != current_block[0]):
3321
if _cmp_by_dirs(current_dir_info[0][0], current_block[0]) < 0:
3322
# filesystem data refers to paths not covered by the dirblock.
3323
# this has two possibilities:
3324
# A) it is versioned but empty, so there is no block for it
3325
# B) it is not versioned.
3327
# if (A) then we need to recurse into it to check for
3328
# new unknown files or directories.
3329
# if (B) then we should ignore it, because we don't
3330
# recurse into unknown directories.
3332
while path_index < len(current_dir_info[1]):
3333
current_path_info = current_dir_info[1][path_index]
3334
if self.want_unversioned:
3335
if current_path_info[2] == 'directory':
3336
if self.tree._directory_is_tree_reference(
3337
current_path_info[0].decode('utf8')):
3338
current_path_info = current_path_info[:2] + \
3339
('tree-reference',) + current_path_info[3:]
3340
new_executable = bool(
3341
stat.S_ISREG(current_path_info[3].st_mode)
3342
and stat.S_IEXEC & current_path_info[3].st_mode)
3344
(None, utf8_decode(current_path_info[0])[0]),
3348
(None, utf8_decode(current_path_info[1])[0]),
3349
(None, current_path_info[2]),
3350
(None, new_executable))
3351
# dont descend into this unversioned path if it is
3353
if current_path_info[2] in ('directory',
3355
del current_dir_info[1][path_index]
3359
# This dir info has been handled, go to the next
3361
current_dir_info = dir_iterator.next()
3362
except StopIteration:
3363
current_dir_info = None
3365
# We have a dirblock entry for this location, but there
3366
# is no filesystem path for this. This is most likely
3367
# because a directory was removed from the disk.
3368
# We don't have to report the missing directory,
3369
# because that should have already been handled, but we
3370
# need to handle all of the files that are contained
3372
for current_entry in current_block[1]:
3373
# entry referring to file not present on disk.
3374
# advance the entry only, after processing.
3375
result = _process_entry(current_entry, None)
3376
if result is not None:
3377
if result is not uninteresting:
3380
if (block_index < len(self.state._dirblocks) and
3381
osutils.is_inside(current_root,
3382
self.state._dirblocks[block_index][0])):
3383
current_block = self.state._dirblocks[block_index]
3385
current_block = None
3388
if current_block and entry_index < len(current_block[1]):
3389
current_entry = current_block[1][entry_index]
3391
current_entry = None
3392
advance_entry = True
3394
if current_dir_info and path_index < len(current_dir_info[1]):
3395
current_path_info = current_dir_info[1][path_index]
3396
if current_path_info[2] == 'directory':
3397
if self.tree._directory_is_tree_reference(
3398
current_path_info[0].decode('utf8')):
3399
current_path_info = current_path_info[:2] + \
3400
('tree-reference',) + current_path_info[3:]
3402
current_path_info = None
3404
path_handled = False
3405
while (current_entry is not None or
3406
current_path_info is not None):
3407
if current_entry is None:
3408
# the check for path_handled when the path is adnvaced
3409
# will yield this path if needed.
3411
elif current_path_info is None:
3412
# no path is fine: the per entry code will handle it.
3413
result = _process_entry(current_entry, current_path_info)
3414
if result is not None:
3415
if result is not uninteresting:
3417
elif (current_entry[0][1] != current_path_info[1]
3418
or current_entry[1][self.target_index][0] in 'ar'):
3419
# The current path on disk doesn't match the dirblock
3420
# record. Either the dirblock is marked as absent, or
3421
# the file on disk is not present at all in the
3422
# dirblock. Either way, report about the dirblock
3423
# entry, and let other code handle the filesystem one.
3425
# Compare the basename for these files to determine
3427
if current_path_info[1] < current_entry[0][1]:
3428
# extra file on disk: pass for now, but only
3429
# increment the path, not the entry
3430
advance_entry = False
3432
# entry referring to file not present on disk.
3433
# advance the entry only, after processing.
3434
result = _process_entry(current_entry, None)
3435
if result is not None:
3436
if result is not uninteresting:
3438
advance_path = False
3440
result = _process_entry(current_entry, current_path_info)
3441
if result is not None:
3443
if result is not uninteresting:
3445
if advance_entry and current_entry is not None:
3447
if entry_index < len(current_block[1]):
3448
current_entry = current_block[1][entry_index]
3450
current_entry = None
3452
advance_entry = True # reset the advance flaga
3453
if advance_path and current_path_info is not None:
3454
if not path_handled:
3455
# unversioned in all regards
3456
if self.want_unversioned:
3457
new_executable = bool(
3458
stat.S_ISREG(current_path_info[3].st_mode)
3459
and stat.S_IEXEC & current_path_info[3].st_mode)
3461
relpath_unicode = utf8_decode(current_path_info[0])[0]
3462
except UnicodeDecodeError:
3463
raise errors.BadFilenameEncoding(
3464
current_path_info[0], osutils._fs_enc)
3466
(None, relpath_unicode),
3470
(None, utf8_decode(current_path_info[1])[0]),
3471
(None, current_path_info[2]),
3472
(None, new_executable))
3473
# dont descend into this unversioned path if it is
3475
if current_path_info[2] in ('directory'):
3476
del current_dir_info[1][path_index]
3478
# dont descend the disk iterator into any tree
3480
if current_path_info[2] == 'tree-reference':
3481
del current_dir_info[1][path_index]
3484
if path_index < len(current_dir_info[1]):
3485
current_path_info = current_dir_info[1][path_index]
3486
if current_path_info[2] == 'directory':
3487
if self.tree._directory_is_tree_reference(
3488
current_path_info[0].decode('utf8')):
3489
current_path_info = current_path_info[:2] + \
3490
('tree-reference',) + current_path_info[3:]
3492
current_path_info = None
3493
path_handled = False
3495
advance_path = True # reset the advance flagg.
3496
if current_block is not None:
3498
if (block_index < len(self.state._dirblocks) and
3499
osutils.is_inside(current_root, self.state._dirblocks[block_index][0])):
3500
current_block = self.state._dirblocks[block_index]
3502
current_block = None
3503
if current_dir_info is not None:
3505
current_dir_info = dir_iterator.next()
3506
except StopIteration:
3507
current_dir_info = None
3508
_process_entry = ProcessEntryPython
3511
# Try to load the compiled form if possible
3513
from bzrlib._dirstate_helpers_c import (
3514
_read_dirblocks_c as _read_dirblocks,
3515
bisect_dirblock_c as bisect_dirblock,
3516
_bisect_path_left_c as _bisect_path_left,
3517
_bisect_path_right_c as _bisect_path_right,
3518
cmp_by_dirs_c as cmp_by_dirs,
3519
ProcessEntryC as _process_entry,
3520
update_entry as update_entry,
3523
from bzrlib._dirstate_helpers_py import (
3524
_read_dirblocks_py as _read_dirblocks,
3525
bisect_dirblock_py as bisect_dirblock,
3526
_bisect_path_left_py as _bisect_path_left,
3527
_bisect_path_right_py as _bisect_path_right,
3528
cmp_by_dirs_py as cmp_by_dirs,
added
removed
bzrlib/dirstate.py
