This is to prepare for ls-tree updates.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Signed-off-by: NJunio C Hamano <junkio@cox.net>

This patch fixes a bug in git-ls-tree in which the wrong filenames are
listed if the exact same file and directory contents are present in
another location in the tree.

Added a new series of test cases for directory and filename handling.
Signed-off-by: NRobert Fitzsimons <robfitz@273k.net>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

All usage strings are now declared as static const char [].

This is carried over from my old git-pb branch.
Signed-off-by: NPetr Baudis <pasky@ucw.cz>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Mainly making a lot of local functions and variables be marked "static",
but there was a "zero as NULL" warning in there too.

This fixes the problem with ls-tree which failed to show
"drivers/char" directory when the user asked for "drivers/char/"
from the command line.  At the same time, if "drivers/char" were
a non directory, "drivers/char/" would not show it.  This is
consistent with the way diffcore-pathspec has been recently
fixed.

This adds back the diffcore-pathspec test,dropped when my
earlier diffcore-pathspec fix was rejected.
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This is a complete rewrite of ls-tree to make it behave more
like what "/bin/ls -a" does in the current working directory.

Namely, the changes are:

 - Unlike the old ls-tree behaviour that used paths arguments to
   restrict output (not that it worked as intended---as pointed
   out in the mailing list discussion, it was quite incoherent),
   this rewrite uses paths arguments to specify what to show.

 - Without arguments, it implicitly uses the root level as its
   sole argument ("/bin/ls -a" behaves as if "." is given
   without argument).

 - Without -r (recursive) flag, it shows the named blob (either
   file or symlink), or the named tree and its immediate
   children.

 - With -r flag, it shows the named path, and recursively
   descends into it if it is a tree.

 - With -d flag, it shows the named path and does not show its
   children even if the path is a tree, nor descends into it
   recursively.

This is still request-for-comments patch.  There is no mailing
list consensus that this proposed new behaviour is a good one.

The patch to t/t3100-ls-tree-restrict.sh illustrates
user-visible behaviour changes.  Namely:

 * "git-ls-tree $tree path1 path0" lists path1 first and then
   path0.  It used to use paths as an output restrictor and
   showed output in cache entry order (i.e. path0 first and then
   path1) regardless of the order of paths arguments.

 * "git-ls-tree $tree path2" lists path2 and its immediate
   children but having explicit paths argument does not imply
   recursive behaviour anymore, hence paths/baz is shown but not
   paths/baz/b.
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Use SP as the column separator except the ones before path which
uses TAB, to make the output format consistent across ls-* and
diff-* commands.
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Enhance git-ls-tree to allow optional 'match paths' that
restricts the output of git-ls-tree.  This is useful to retrieve
a single file's SHA1 out of a tree without creating an index.

[JC: I added the test case]
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Fix various things that sparse complains about:
 - use NULL instead of 0
 - make sure we declare everything properly, or mark it static
 - use proper function declarations ("fn(void)" instead of "fn()")

Sparse is always right.

Fixes all in-code names that leaved during "big name change".
Signed-off-by: NAlexey Nezhdanov <snake@penza-gsm.ru>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

 - Raw hashes should be unsigned char.
 - String functions want signed char.
 - Hash and compress functions want unsigned char.

Signed-off By: Brian Gerst <bgerst@didntduck.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

cleanup: this patch adds a free() to ls-tree.c.

(Technically it's not a memory leak yet because the buffer is allocated
once by the function and then the utility exits - but it's a tad cleaner
to not leave such assumptions in the code, so that if someone reuses the
function (or extends the utility to include a loop) the uncleanliness
doesnt develop into a real memory leak.)
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Forward-ported.
Signed-off-by: NPetr Baudis <pasky@ucw.cz>

Some commands initialize sha1_file_directory by hand.  There is no
need to do so; sha1_file.c knows how to handle it.

The next patch will remove the variable altogether.
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This allows the programs to use various simplified versions of
the SHA1 names, eg just say "HEAD" for the SHA1 pointed to by
the .git/HEAD file etc.

For example, this commit has been done with

	git-commit-tree $(git-write-tree) -p HEAD

instead of the traditional "$(cat .git/HEAD)" syntax.

This patch renames read_tree_with_tree_or_commit_sha1() to
read_object_with_reference() and extends it to automatically
dereference not just "commit" objects but "tag" objects.  With
this patch, you can say e.g.:

    ls-tree $tag
    read-tree -m $(merge-base $tag $HEAD) $tag $HEAD
    diff-cache $tag
    diff-tree $tag $HEAD
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Updates ls-tree.c to use read_tree_with_tree_or_commit_sha1()
function.  The command can take either tree or commit IDs with
this patch.
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

ls-tree unconditionally called read_sha1_file() for all paths
even when not needed, which was a mistake introduced by me.
Rectify this by first checking S_ISDIR(mode) and read the tree
contents only when it is a tree and we are recursive.  There is
no need to read it in any other cases.

The patch also removes the confusing comment that led to this
incorrect implementation.

Thanks to Peter Baudis for noticing this problem.
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This adds '-r' (recursive) option and '-z' (NUL terminated)
option to ls-tree.  I need it so that the merge-trees (formerly
known as git-merge.perl) script does not need to create any
temporary dircache while merging.  It used to use show-files on
a temporary dircache to get the list of files in the ancestor
tree, and also used the dircache to store the result of its
automerge.  I probably still need it for the latter reason, but
with this patch not for the former reason anymore.

It is relative to bb95843a5a0f397270819462812735ee29796fb4
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Now there is error() for "library" errors and die() for fatal "application"
errors. usage() is now used strictly only for usage errors.
Signed-off-by: NPetr Baudis <pasky@ucw.cz>

ls-tree tool provides just a way to export the binary tree objects
to a usable text format. This is bound to be useful in variety
of scripts, although none of those I have currently uses it.
But e.g. the simple script I've sent to HPA for purging the object
database uses it.
Signed-off-by: NPetr Baudis <pasky@ucw.cz>