delta/git.git/tree-walk.c, branch sb/parse-options-codeformat

tree-walk: learn get_tree_entry_follow_symlinks

2015-05-20T20:45:49+00:00

Add a new function, get_tree_entry_follow_symlinks, to tree-walk.[ch].
The function is not yet used.  It will be used to implement git
cat-file --batch --follow-symlinks.

The function locates an object by path, following symlinks in the
repository.  If the symlinks lead outside the repository, the function
reports this to the caller.

Signed-off-by: David Turner 
Signed-off-by: Ramsay Jones 
Signed-off-by: Junio C Hamano

cleanup duplicate name_compare() functions

2014-06-20T17:12:14+00:00

We often represent our strings as a counted string, i.e. a pair of
the pointer to the beginning of the string and its length, and the
string may not be NUL terminated to that length.

To compare a pair of such counted strings, unpack-trees.c and
read-cache.c implement their own name_compare() functions
identically.  In addition, the cache_name_compare() function in
read-cache.c is nearly identical.  The only difference is when one
string is the prefix of the other string, in which case
name_compare() returns -1/+1 to show which one is longer, and
cache_name_compare() returns the difference of the lengths to show
the same information.

Unify these three functions by using the implementation from
cache_name_compare().  This does not make any difference to the
existing and future callers, as they must be paying attention only
to the sign of the returned value (and not the magnitude) because
the original implementations of these two functions return values
returned by memcmp(3) when the one string is not a prefix of the
other string, and the only thing memcmp(3) guarantees its callers is
the sign of the returned value, not the magnitude.

Signed-off-by: Jeremiah Mahler 
Signed-off-by: Junio C Hamano

tree-walk: finally switch over tree descriptors to contain a pre-parsed entry

2014-02-24T22:43:29+00:00

This continues 4651ece8 (Switch over tree descriptors to contain a
pre-parsed entry) and moves the only rest computational part

    mode = canon_mode(mode)

from tree_entry_extract() to tree entry decode phase - to
decode_tree_entry().

The reason to do it, is that canon_mode() is at least 2 conditional
jumps for regular files, and that could be noticeable should canon_mode()
be invoked several times.

That does not matter for current Git codebase, where typical tree
traversal is

    while (t->size) {
        sha1 = tree_entry_extract(t, &path, &mode);
        ...
        update_tree_entry(t);
    }

i.e. we do t -> sha1,path.mode "extraction" only once per entry. In such
cases, it does not matter performance-wise, where that mode
canonicalization is done - either once in tree_entry_extract(), or once
in decode_tree_entry() called by update_tree_entry() - it is
approximately the same.

But for future code, which could need to work with several tree_desc's
in parallel, it could be handy to operate on tree_desc descriptors, and
do "extracts" only when needed, or at all, access only relevant part of
it through structure fields directly.

And for such situations, having canon_mode() be done once in decode
phase is better - we won't need to pay the performance price of 2 extra
conditional jumps on every t->mode access.

So let's move mode canonicalization to decode_tree_entry(). That was the
final bit. Now after tree entry is decoded, it is fully ready and could
be accessed either directly via field, or through tree_entry_extract()
which this time got really "totally trivial".

Signed-off-by: Kirill Smelkov 
Signed-off-by: Junio C Hamano

Merge branch 'as/tree-walk-fix-aggressive-short-cut'

2014-01-27T18:48:32+00:00

* as/tree-walk-fix-aggressive-short-cut:
  tree_entry_interesting: match against all pathspecs

tree_entry_interesting: match against all pathspecs

2014-01-27T17:01:50+00:00

The current basedir compare aborts early in order to avoid futile
recursive searches. However, a match may still be found by another
pathspec. This can cause an error while checking out files from a branch
when using multiple pathspecs:

$ git checkout master -- 'a/*.txt' 'b/*.txt'
error: pathspec 'a/*.txt' did not match any file(s) known to git.

Signed-off-by: Andy Spencer 
Acked-by: Nguyễn Thái Ngọc Duy 
Signed-off-by: Junio C Hamano

tree-walk.c: ignore trailing slash on submodule in tree_entry_interesting()

2014-01-23T21:03:00+00:00

We do ignore trailing slash on a directory, so pathspec "abc/" matches
directory "abc". A submodule is also a directory. Apply the same logic
to it. This makes "git log submodule-path" and "git log submodule-path/"
produce the same output.

Signed-off-by: Nguyễn Thái Ngọc Duy 
Signed-off-by: Junio C Hamano

Support pathspec magic :(exclude) and its short form :!

2013-12-06T21:00:39+00:00

Signed-off-by: Nguyễn Thái Ngọc Duy 
Signed-off-by: Junio C Hamano

Merge branch 'jl/submodule-mv'

2013-09-09T21:36:15+00:00

"git mv A B" when moving a submodule A does "the right thing",
inclusing relocating its working tree and adjusting the paths in
the .gitmodules file.

* jl/submodule-mv: (53 commits)
  rm: delete .gitmodules entry of submodules removed from the work tree
  mv: update the path entry in .gitmodules for moved submodules
  submodule.c: add .gitmodules staging helper functions
  mv: move submodules using a gitfile
  mv: move submodules together with their work trees
  rm: do not set a variable twice without intermediate reading.
  t6131 - skip tests if on case-insensitive file system
  parse_pathspec: accept :(icase)path syntax
  pathspec: support :(glob) syntax
  pathspec: make --literal-pathspecs disable pathspec magic
  pathspec: support :(literal) syntax for noglob pathspec
  kill limit_pathspec_to_literal() as it's only used by parse_pathspec()
  parse_pathspec: preserve prefix length via PATHSPEC_PREFIX_ORIGIN
  parse_pathspec: make sure the prefix part is wildcard-free
  rename field "raw" to "_raw" in struct pathspec
  tree-diff: remove the use of pathspec's raw[] in follow-rename codepath
  remove match_pathspec() in favor of match_pathspec_depth()
  remove init_pathspec() in favor of parse_pathspec()
  remove diff_tree_{setup,release}_paths
  convert common_prefix() to use struct pathspec
  ...

traverse_trees(): clarify return value of the callback

2013-07-19T22:29:41+00:00

The variable name "ret" sounds like the variable to be returned, but
since e6c111b4 we return error, and it is misleading.

As this variable tells us which trees in t[] array were used in the
callback function, so that this caller can know the entries in which
of the trees need advancing, "trees_used" is a better name.

Also the assignment to 0 was removed at the start of the function as
well after the "if (interesting)" block.  Those are unneeded as that
variable is set to the callback return value any time we enter the
"if (interesting)" block, so we'd overwrite old values anyway.

Signed-off-by: Stefan Beller 
Signed-off-by: Junio C Hamano

parse_pathspec: accept :(icase)path syntax

2013-07-15T19:14:38+00:00

Signed-off-by: Nguyễn Thái Ngọc Duy 
Signed-off-by: Junio C Hamano