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inotify: server: new data structure to keep track of changes....
inotify: server: new data structure to keep track of changes. == Rationale for the new structure == Current structure was a dictionary tree. One directory was tracked as a dictionary: - keys: file/subdir name - values: - for a file, the status (a/r/m/...) - for a subdir, the directory representing the subdir It allowed efficient lookups, no matter of the type of the terminal leaf: for part in path.split('/'): tree = tree[part] However, there is no way to represent a directory and a file with the same name because keys are conflicting in the dictionary. Concrete example: Initial state: root dir |- foo (file) |- bar (file) # data state is: {'foo': 'n', 'bar': 'n'} Remove foo: root dir |- bar (file) # Data becomes {'foo': 'r'} until next commit. Add foo, as a directory, and foo/barbar file: root dir |- bar (file) |-> foo (dir) |- barbar (file) # New state should be represented as: {'foo': {'barbar': 'a'}, 'bar': 'n'} however, the key "foo" is already used and represents the old file. The dirstate: D foo A foo/barbar cannot be represented, hence the need for a new structure. == The new structure == 'directory' class. Represents one directory level. * Notable attributes: Two dictionaries: - 'files' Maps filename -> status for the current dir. - 'dirs' Maps subdir's name -> directory object representing the subdir * methods - walk(), formerly server.walk - lookup(), old server.lookup - dir(), old server.dir This new class allows embedding all the tree walks/lookups in its own class, instead of having everything mixed together in server. Incidently, since files and directories are not stored in the same dictionaries, we are solving the previous key conflict problem. The small drawback is that lookup operation is a bit more complex: for a path a/b/c/d/e we have to check twice the leaf, if e is a directory or a file.
Benoit Boissinot - - Load All Authors

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test-addremove-similar
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Erling Ellingsen
Avoid some false positives for addremove -s...
 r4135 #!/bin/sh
hg init rep; cd rep
touch empty-file
python -c 'for x in range(10000): print x' > large-file
hg addremove
hg commit -m A
rm large-file empty-file
python -c 'for x in range(10,10000): print x' > another-file
hg addremove -s50
hg commit -m B
Thomas Arendsen Hein
addremove: comparing two empty files caused ZeroDivisionError...
 r4472 echo % comparing two empty files caused ZeroDivisionError in the past
hg update -C 0
rm empty-file
touch another-empty-file
hg addremove -s50
Erling Ellingsen
Avoid some false positives for addremove -s...
 r4135 cd ..
hg init rep2; cd rep2
python -c 'for x in range(10000): print x' > large-file
python -c 'for x in range(50): print x' > tiny-file
hg addremove
hg commit -m A
python -c 'for x in range(70): print x' > small-file
rm tiny-file
rm large-file
hg addremove -s50
hg commit -m B
Bryan O'Sullivan
addremove: print meaningful error message if --similar not numeric
 r4966 echo % should all fail
hg addremove -s foo
hg addremove -s -1
hg addremove -s 1e6
Benoit Boissinot
addremove/findrenames: find renames according to the match object (issue1527)...
 r8489 cd ..
echo '% issue 1527'
hg init rep3; cd rep3
mkdir d
echo a > d/a
hg add d/a
hg commit -m 1
mv d/a d/b
hg addremove -s80
hg debugstate
mv d/b c
echo "% no copies found here (since the target isn't in d"
hg addremove -s80 d
echo "% copies here"
hg addremove -s80
Bryan O'Sullivan
addremove: print meaningful error message if --similar not numeric
 r4966 true