Commit Graph

492 Commits

Author SHA1 Message Date
Michael Haggerty
72b64b44e7 get_ref_dir(): use a strbuf to hold refname
This simplifies the bookkeeping and allows an (artificial) restriction
on refname component length to be removed.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-05-03 13:15:09 -07:00
Junio C Hamano
1be65eda6a Merge branch 'nd/i18n'
More message strings marked for i18n.

By Nguyễn Thái Ngọc Duy (10) and Jonathan Nieder (1)
* nd/i18n:
  help: replace underlining "help -a" headers using hyphens with a blank line
  i18n: bundle: mark strings for translation
  i18n: index-pack: mark strings for translation
  i18n: apply: update say_patch_name to give translators complete sentence
  i18n: apply: mark strings for translation
  i18n: remote: mark strings for translation
  i18n: make warn_dangling_symref() automatically append \n
  i18n: help: mark strings for translation
  i18n: mark relative dates for translation
  strbuf: convenience format functions with \n automatically appended
  Makefile: feed all header files to xgettext
2012-05-02 13:51:35 -07:00
Michael Haggerty
d5fdae6737 get_ref_dir(): return early if directory cannot be read
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-25 10:43:20 -07:00
Nguyễn Thái Ngọc Duy
18986d5377 i18n: make warn_dangling_symref() automatically append \n
This helps remove \n from translatable strings

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-24 14:55:48 -07:00
Michael Haggerty
933ac036d2 do_for_each_ref(): only iterate over the subtree that was requested
If the base argument has a "/" chararacter, then only iterate over the
reference subdir whose name is the part up to the last "/".

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-10 15:55:55 -07:00
Michael Haggerty
432ad41e60 refs: store references hierarchically
Store references hierarchically in a tree that matches the
pseudo-directory structure of the reference names.  Add a new kind of
ref_entry (with flag REF_DIR) to represent a whole subdirectory of
references.  Sort ref_dirs one subdirectory at a time.

NOTE: the dirs can now be sorted as a side-effect of other function
calls.  Therefore, it would be problematic to do something from a
each_ref_fn callback that could provoke the sorting of a directory
that is currently being iterated over (i.e., the directory containing
the entry that is being processed or any of its parents).

This is a bit far-fetched, because a directory is always sorted just
before being iterated over.  Therefore, read-only accesses cannot
trigger the sorting of a directory whose iteration has already
started.  But if a callback function would add a reference to a parent
directory of the reference in the iteration, then try to resolve a
reference under that directory, a re-sort could be triggered and cause
the iteration to work incorrectly.

Nevertheless...add a comment in refs.h warning against modifications
during iteration.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-10 15:55:55 -07:00
Michael Haggerty
81a79d8e27 sort_ref_dir(): simplify logic
Use the more usual indexing idiom for clarity.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-10 15:55:50 -07:00
Michael Haggerty
d3177275ed refs.c: rename ref_array -> ref_dir
This purely textual change is in preparation for storing references
hierarchically, when the old ref_array structure will represent one
"directory" of references.  Rename functions that deal with this
structure analogously, and also rename the structure's "refs" member
to "entries".

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-10 15:54:59 -07:00
Michael Haggerty
593f1bb82f struct ref_entry: nest the value part in a union
This change is obviously silly by itself, but it is a step towards
adding a second member to the union.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-10 15:54:58 -07:00
Michael Haggerty
dac529e44f check_refname_component(): return 0 for zero-length components
Return 0 (instead of -1) for zero-length components.  Move the
interpretation of zero-length components as illegal to
check_refname_format().

This will make it easier to extend check_refname_format() to also
check whether directory names are valid.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-10 15:54:58 -07:00
Michael Haggerty
732134edab free_ref_entry(): new function
Add a function free_ref_entry().  This function will become nontrivial
when ref_entry (soon) becomes polymorphic.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-10 15:54:58 -07:00
Michael Haggerty
5a4d494731 names_conflict(): simplify implementation
Save a bunch of lines of code and a couple of strlen() calls.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-10 15:54:54 -07:00
Michael Haggerty
d66da478f2 repack_without_ref(): reimplement using do_for_each_ref_in_array()
It costs a bit of boilerplate, but it means that the function can be
ignorant of how cached refs are stored.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-10 15:53:28 -07:00
Michael Haggerty
b3fd060f9e do_for_each_ref_in_arrays(): new function
Extract function do_for_each_ref_in_arrays() from do_for_each_ref().
The new function will be a useful building block for storing refs
hierarchically.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-10 15:51:52 -07:00
Michael Haggerty
c36b5bc2e4 do_for_each_ref_in_array(): new function
Extract function do_for_each_ref_in_array() from do_for_each_ref().
The new function will be a useful building block for storing refs
hierarchically.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-10 15:51:52 -07:00
Michael Haggerty
429213e470 refs: manage current_ref within do_one_ref()
Set and clear current_ref within do_one_ref() instead of setting it
here and leaving it to somebody else to clear it.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-10 15:51:52 -07:00
Michael Haggerty
bc5fd6d3c2 refs.c: reorder definitions more logically
Reorder definitions in file: first check_refname_format() and helper
functions, then the functions for managing the ref_entry and ref_array
data structures, then ref_cache, then the more "business-logicky"
stuff.  No code is changed.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-10 15:51:47 -07:00
Michael Haggerty
cf6672edb1 refs: remove the extra_refs API
The extra_refs provided a kludgy way to create fake references at a
global level in the hope that they would only affect some particular
code path.  The last user of this API been rewritten, so strip this
stuff out before somebody else gets the bad idea of using it.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-12 19:50:39 -08:00
Michael Haggerty
30249ee68f add_packed_ref(): new function in the refs API.
Add a new function add_packed_ref() that adds a reference directly to
the in-memory packed reference cache.  This will be useful for
creating local references while cloning.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-17 11:55:04 -08:00
Michael Haggerty
e6ed3ca651 ref_array: keep track of whether references are sorted
Keep track of how many entries at the beginning of a ref_array are already
sorted.  In sort_ref_array(), return early if the the array is already
sorted (i.e., if no new references has been appended to the end of the
list since the last call to sort_ref_array()).

Sort ref_arrays only when needed, namely in search_ref_array() and in
do_for_each_ref().  However, never call sort_ref_array() on the
extra_refs, because extra_refs can contain multiple entries with the same
name and because sort_ref_array() not only sorts, but de-dups its
contents.

This change is currently not useful, because entries are not added to
ref_arrays after they are created.  But in a moment they will be...

Implementation note: we could store a binary "sorted" value instead of
an integer, but storing the number of sorted entries leaves the way
open for a couple of possible future optimizations:

* In sort_ref_array(), sort *only* the unsorted entries, then merge
  them with the sorted entries.  This should be faster if most of the
  entries are already sorted.

* Teach search_ref_array() to do a binary search of any sorted
  entries, and if unsuccessful do a linear search of any unsorted
  entries.  This would avoid the need to sort the list every time that
  search_ref_array() is called, and (given some intelligence about how
  often to sort) could significantly improve the speed in certain
  hypothetical usage patterns.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-17 11:53:21 -08:00
Junio C Hamano
8d68493f20 Merge branch 'mh/ref-api'
* mh/ref-api:
  add_ref(): take a (struct ref_entry *) parameter
  create_ref_entry(): extract function from add_ref()
  repack_without_ref(): remove temporary
  resolve_gitlink_ref_recursive(): change to work with struct ref_cache
  Pass a (ref_cache *) to the resolve_gitlink_*() helper functions
  resolve_gitlink_ref(): improve docstring
  get_ref_dir(): change signature
  refs: change signatures of get_packed_refs() and get_loose_refs()
  is_dup_ref(): extract function from sort_ref_array()
  add_ref(): add docstring
  parse_ref_line(): add docstring
  is_refname_available(): remove the "quiet" argument
  clear_ref_array(): rename from free_ref_array()
  refs: rename parameters result -> sha1
  refs: rename "refname" variables
  struct ref_entry: document name member

Conflicts:
	cache.h
	refs.c
2011-12-20 13:25:53 -08:00
Nguyễn Thái Ngọc Duy
8cad4744ee Rename resolve_ref() to resolve_ref_unsafe()
resolve_ref() may return a pointer to a shared buffer and can be
overwritten by the next resolve_ref() calls. Callers need to
pay attention, not to keep the pointer when the next call happens.

Rename with "_unsafe" suffix to warn developers (or reviewers) before
introducing new call sites.

This patch is generated using the following command

git grep -l 'resolve_ref(' -- '*.[ch]'|xargs sed -i 's/resolve_ref(/resolve_ref_unsafe(/g'

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-13 09:39:46 -08:00
Nguyễn Thái Ngọc Duy
96ec7b1e70 Convert resolve_ref+xstrdup to new resolve_refdup function
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-13 09:26:52 -08:00
Michael Haggerty
dd73ecd1bc add_ref(): take a (struct ref_entry *) parameter
Take a pointer to the ref_entry to add to the array, rather than
creating the ref_entry within the function.  This opens the way to
having multiple kinds of ref_entries.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:08:53 -08:00
Michael Haggerty
cddc42587c create_ref_entry(): extract function from add_ref()
Separate the creation of the ref_entry from its addition to a ref_array.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:08:53 -08:00
Michael Haggerty
fe9c7b78c5 repack_without_ref(): remove temporary
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:08:53 -08:00
Michael Haggerty
064d51dc40 resolve_gitlink_ref_recursive(): change to work with struct ref_cache
resolve_gitlink_ref() and resolve_gitlink_ref_recursive(), together,
basically duplicated the code in git_path_submodule().  So use that
function instead.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:08:53 -08:00
Michael Haggerty
b0626608ea Pass a (ref_cache *) to the resolve_gitlink_*() helper functions
And remove some redundant arguments from resolve_gitlink_packed_ref().

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:08:53 -08:00
Michael Haggerty
3b12482358 get_ref_dir(): change signature
Change get_ref_dir() to take a (struct ref_cache *) in place of the
submodule name.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:08:53 -08:00
Michael Haggerty
316b097ac1 refs: change signatures of get_packed_refs() and get_loose_refs()
Change get_packed_refs() and get_loose_refs() to take a (struct
ref_cache *) instead of the name of the submodule.

Change get_ref_dir() to take a submodule name (i.e., "" for the main
module) rather than a submodule pointer (i.e., NULL for the main
module) so that refs->name can be used as its argument.  (In a moment
this function will also be changed to take a (struct ref_cache *),
too.)

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:08:53 -08:00
Michael Haggerty
202a56a924 is_dup_ref(): extract function from sort_ref_array()
Giving the function a name makes the code easier to understand.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:08:53 -08:00
Michael Haggerty
6af1038bee add_ref(): add docstring
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:08:52 -08:00
Michael Haggerty
fbd09e41d5 parse_ref_line(): add docstring
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:08:52 -08:00
Michael Haggerty
19b68b1e63 is_refname_available(): remove the "quiet" argument
quiet was always set to 0, so get rid of it.  Add a function docstring
for good measure.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:08:52 -08:00
Michael Haggerty
7c59511ed5 clear_ref_array(): rename from free_ref_array()
Rename the function since it doesn't actually free the array object
that is passed to it.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:08:51 -08:00
Michael Haggerty
85be1fe34a refs: rename parameters result -> sha1
Try consistently to use the name "sha1" for parameters to which a SHA1
will be stored.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:08:51 -08:00
Michael Haggerty
dfefa935ae refs: rename "refname" variables
Try to consistently use the variable name "refname" when referring to
a string that names a reference.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:08:51 -08:00
Michael Haggerty
c49b039bdd struct ref_entry: document name member
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:08:51 -08:00
Junio C Hamano
b7f7c07977 Merge branch 'nd/resolve-ref'
* nd/resolve-ref:
  Copy resolve_ref() return value for longer use
  Convert many resolve_ref() calls to read_ref*() and ref_exists()

Conflicts:
	builtin/fmt-merge-msg.c
	builtin/merge.c
	refs.c
2011-12-09 13:37:14 -08:00
Junio C Hamano
eb8aa3d2c2 Merge branch 'jc/pull-signed-tag'
* jc/pull-signed-tag:
  commit-tree: teach -m/-F options to read logs from elsewhere
  commit-tree: update the command line parsing
  commit: teach --amend to carry forward extra headers
  merge: force edit and no-ff mode when merging a tag object
  commit: copy merged signed tags to headers of merge commit
  merge: record tag objects without peeling in MERGE_HEAD
  merge: make usage of commit->util more extensible
  fmt-merge-msg: Add contents of merged tag in the merge message
  fmt-merge-msg: package options into a structure
  fmt-merge-msg: avoid early returns
  refs DWIMmery: use the same rule for both "git fetch" and others
  fetch: allow "git fetch $there v1.0" to fetch a tag
  merge: notice local merging of tags and keep it unwrapped
  fetch: do not store peeled tag object names in FETCH_HEAD
  Split GPG interface into its own helper library

Conflicts:
	builtin/fmt-merge-msg.c
	builtin/merge.c
2011-12-09 13:37:09 -08:00
Junio C Hamano
09116a1c31 refs: loosen over-strict "format" check
The add_extra_ref() interface is used to add an extra-ref that is _not_
our ref for the purpose of helping auto-following of tags and reducing
object transfer from remote repository, and they are typically formatted
as a tagname followed by ^{} to make sure no valid refs match that
pattern. In other words, these entries are deliberately formatted not to
pass check-refname-format test.

A recent series however added a test unconditionally to the add_ref()
function that is called from add_extra_ref(). The check may be sensible
for other two callsites of the add_ref() interface, but definitely is
a wrong thing to do in add_extra_ref(). Disable it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Michael Haggerty <mhagger@alum.mit.edu>
2011-11-16 21:52:24 -08:00
Nguyễn Thái Ngọc Duy
c689332391 Convert many resolve_ref() calls to read_ref*() and ref_exists()
resolve_ref() may return a pointer to a static buffer, which is not
safe for long-term use because if another resolve_ref() call happens,
the buffer may be changed.  Many call sites though do not care about
this buffer. They simply check if the return value is NULL or not.

Convert all these call sites to new wrappers to reduce resolve_ref()
calls from 57 to 34. If we change resolve_ref() prototype later on
to avoid passing static buffer out, this helps reduce changes.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-13 12:21:06 -08:00
Junio C Hamano
dd621df9cd refs DWIMmery: use the same rule for both "git fetch" and others
"git log frotz" can DWIM to "refs/remotes/frotz/HEAD", but in the remote
access context, "git fetch frotz" to fetch what the other side happened to
have fetched from what it calls 'frotz' (which may not have any relation
to what we consider is 'frotz') the last time would not make much sense,
so the fetch rules table did not include "refs/remotes/%.*s/HEAD".

When the user really wants to, "git fetch $there remotes/frotz/HEAD" would
let her do so anyway, so this is not about safety or security; it merely
is about confusion avoidance and discouraging meaningless usage.

Specifically, it is _not_ about ambiguity avoidance. A name that would
become ambiguous if we use the same rules table for both fetch and local
rev-parse would be ambiguous locally at the remote side.

So for the same reason as we added rule to allow "git fetch $there v1.0"
instead of "git fetch $there tags/v1.0" in the previous commit, here is a
bit longer rope for the users, which incidentally simplifies our code.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-07 15:34:30 -08:00
Junio C Hamano
47d84b6abc fetch: allow "git fetch $there v1.0" to fetch a tag
You can already do so with "git fetch $there tags/v1.0" but if it is not
ambiguous there is no reason to force users to type more.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-07 15:34:30 -08:00
Junio C Hamano
0445ba2457 Merge branch 'jc/broken-ref-dwim-fix'
* jc/broken-ref-dwim-fix:
  resolve_ref(): report breakage to the caller without warning
  resolve_ref(): expose REF_ISBROKEN flag
  refs.c: move dwim_ref()/dwim_log() from sha1_name.c
2011-10-21 16:04:36 -07:00
Junio C Hamano
2f18b4642d Merge branch 'mh/ref-api'
* mh/ref-api:
  clear_ref_cache(): inline function
  write_ref_sha1(): only invalidate the loose ref cache
  clear_ref_cache(): extract two new functions
  clear_ref_cache(): rename parameter
  invalidate_ref_cache(): expose this function in the refs API
  invalidate_ref_cache(): take the submodule as parameter
  invalidate_ref_cache(): rename function from invalidate_cached_refs()
2011-10-21 16:04:36 -07:00
Junio C Hamano
e3353046ee Merge branch 'jc/maint-remove-renamed-ref'
* jc/maint-remove-renamed-ref:
  branch -m/-M: remove undocumented RENAMED-REF

Conflicts:
	refs.c
2011-10-21 16:04:34 -07:00
Junio C Hamano
5595635002 resolve_ref(): report breakage to the caller without warning
629cd3a (resolve_ref(): emit warnings for improperly-formatted references,
2011-09-15) made resolve_ref() warn against files that are found in the
directories the ref dwimmery looks at. The intent may be good, but these
messages come from a wrong level of the API hierarchy.

Instead record the breakage in "flags" whose purpose is to explain the
result of the function to the caller, who is in a much better position to
make intelligent decision based on the information.

This updates sha1_name.c::dwim_ref() to warn against such a broken
candidate only when it does not appear directly below $GIT_DIR to restore
the traditional behaviour, as we know many files directly underneath
$GIT_DIR/ are not refs.

Warning against "git show config --" with "$GIT_DIR/config does not look
like a well-formed ref" does not make sense, and we may later tweak the
dwimmery not to even consider them as candidates, but that is a longer
term topic.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-19 13:58:15 -07:00
Junio C Hamano
98ac34b2b1 resolve_ref(): expose REF_ISBROKEN flag
Instead of keeping this as an internal API, let the callers find
out the reason why resolve_ref() returned NULL is not because there
was no such file in $GIT_DIR but because a file was corrupt.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-19 13:58:15 -07:00
Junio C Hamano
e5fa45c159 resolve_gitlink_packed_ref(): fix mismerge
2c5c66b (Merge branch 'jp/get-ref-dir-unsorted', 2011-10-10) merged a
topic that forked from the mainline before a new helper function
get_packed_refs() refactored code to read packed-refs file. The merge made
the call to the helper function with an incorrect argument. The parameter
to the function has to be a path to the submodule.

Fix the mismerge.

Helped-by: Mark Levedahl <mlevedahl@gmail.com>
Helped-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-17 11:44:18 -07:00
Michael Haggerty
c5f29abd80 clear_ref_cache(): inline function
clear_ref_cache() was only called from one place, so inline it
there.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-16 21:12:22 -07:00
Michael Haggerty
8bf90dc9bd write_ref_sha1(): only invalidate the loose ref cache
Since write_ref_sha1() can only write loose refs and cannot write
symbolic refs, there is no need for it to invalidate the packed ref
cache.

Suggested by: Martin Fick <mfick@codeaurora.org>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-16 21:12:04 -07:00
Michael Haggerty
760c4512e5 clear_ref_cache(): extract two new functions
Extract two new functions from clear_cached_refs():
clear_loose_ref_cache() and clear_packed_ref_cache().

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-16 21:11:33 -07:00
Michael Haggerty
1b7edaf94b clear_ref_cache(): rename parameter
...for consistency with the rest of this module.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-16 21:11:03 -07:00
Michael Haggerty
8be8bde75f invalidate_ref_cache(): expose this function in the refs API
Make invalidate_ref_cache() an official part of the refs API.  It is
currently a fact of life that code outside of refs.c mucks about with
references.  This change gives such code a way of informing the refs
module that it should no longer trust its cache.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-16 21:10:49 -07:00
Michael Haggerty
3870a0d1d8 invalidate_ref_cache(): take the submodule as parameter
Instead of invalidating the ref cache on an all-or-nothing basis,
invalidate the cache for a specific submodule.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-16 21:09:50 -07:00
Michael Haggerty
79c7ca54e1 invalidate_ref_cache(): rename function from invalidate_cached_refs()
It is the cache that is being invalidated, not the references, and the
new name makes this unambiguous.  Rename other items analogously:

* struct cached_refs -> struct ref_cache
* cached_refs (the variable) -> ref_cache
* clear_cached_refs() -> clear_ref_cache()
* create_cached_refs() -> create_ref_cache()
* get_cached_refs() -> get_ref_cache()

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-16 21:08:23 -07:00
Junio C Hamano
ff74f7f118 refs.c: move dwim_ref()/dwim_log() from sha1_name.c
Both dwim_ref()/dwim_log() functions are intimately related to the ref
parsing rules defined in refs.c and better fits there. Move them together
with substitute_branch_name(), a file scope static helper function.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-12 10:35:38 -07:00
Junio C Hamano
b0eab01a48 branch -m/-M: remove undocumented RENAMED-REF
The commit message for c976d41 (git-branch: add options and tests for
branch renaming, 2006-11-28) mentions RENAME_REF but otherwise this is not
documented anywhere, and it does not appear in any of the tests.

Worse yet, the name of the actual file is "RENAMED-REF".

This was supposed to hold the commit object name at the tip of the branch
the most recent "branch -m/-M" renamed, but that is not necessary in order
to be able to recover from a mistake. Even when "branch -M A B" overwrites
an existing branch B, what is kept in RENAMED-REF is the commit at the tip
of the original branch A, not the commit B from the now-lost branch.

Just remove this unused "feature".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-12 09:52:55 -07:00
Junio C Hamano
2c5c66be6e Merge branch 'jp/get-ref-dir-unsorted'
* jp/get-ref-dir-unsorted:
  refs.c: free duplicate entries in the ref array instead of leaking them
  refs.c: abort ref search if ref array is empty
  refs.c: ensure struct whose member may be passed to realloc is initialized
  refs: Use binary search to lookup refs faster
  Don't sort ref_list too early

Conflicts:
	refs.c
2011-10-10 15:56:19 -07:00
Junio C Hamano
9bd500048d Merge branch 'mh/check-ref-format-3'
* mh/check-ref-format-3: (23 commits)
  add_ref(): verify that the refname is formatted correctly
  resolve_ref(): expand documentation
  resolve_ref(): also treat a too-long SHA1 as invalid
  resolve_ref(): emit warnings for improperly-formatted references
  resolve_ref(): verify that the input refname has the right format
  remote: avoid passing NULL to read_ref()
  remote: use xstrdup() instead of strdup()
  resolve_ref(): do not follow incorrectly-formatted symbolic refs
  resolve_ref(): extract a function get_packed_ref()
  resolve_ref(): turn buffer into a proper string as soon as possible
  resolve_ref(): only follow a symlink that contains a valid, normalized refname
  resolve_ref(): use prefixcmp()
  resolve_ref(): explicitly fail if a symlink is not readable
  Change check_refname_format() to reject unnormalized refnames
  Inline function refname_format_print()
  Make collapse_slashes() allocate memory for its result
  Do not allow ".lock" at the end of any refname component
  Refactor check_refname_format()
  Change check_ref_format() to take a flags argument
  Change bad_ref_char() to return a boolean value
  ...
2011-10-10 15:56:18 -07:00
Junio C Hamano
11fa509957 Merge branch 'mh/iterate-refs'
* mh/iterate-refs:
  refs.c: make create_cached_refs() static
  Retain caches of submodule refs
  Store the submodule name in struct cached_refs
  Allocate cached_refs objects dynamically
  Change the signature of read_packed_refs()
  Access reference caches only through new function get_cached_refs()
  Extract a function clear_cached_refs()
2011-10-10 15:56:18 -07:00
Brandon Casey
17d68a54de refs.c: free duplicate entries in the ref array instead of leaking them
Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-10 10:05:39 -07:00
Brandon Casey
687296960d refs.c: abort ref search if ref array is empty
The bsearch() implementation on IRIX 6.5 segfaults if it is passed NULL
for the base array argument even if number-of-elements is zero.  So, let's
work around it by detecting an empty array and aborting early.

This is a useful optimization in its own right anyway, since we avoid a
useless allocation and initialization of the ref_entry when the ref array
is empty.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-10 10:05:22 -07:00
Brandon Casey
43d20a8c50 refs.c: ensure struct whose member may be passed to realloc is initialized
The variable "refs" is allocated on the stack but is not initialized.  It
is passed to read_packed_refs(), and its struct members may eventually be
passed to add_ref() and ALLOC_GROW().  Since the structure has not been
initialized, its members may contain random non-zero values.  So let's
initialize it.

The call sequence looks something like this:

   resolve_gitlink_packed_ref(...) {

       struct cached_refs refs;
       ...
       read_packed_refs(f, &refs);
       ...
   }

   read_packed_refs(FILE*, struct cached_refs *cached_refs) {
       ...
       add_ref(name, sha1, flag, &cached_refs->packed, &last);
       ...
   }

   add_ref(..., struct ref_array *refs, struct ref_entry **) {
       ...
       ALLOC_GROW(refs->refs, refs->nr + 1, refs->alloc);
   }

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-10 10:05:07 -07:00
Michael Haggerty
dce4bab656 add_ref(): verify that the refname is formatted correctly
In add_ref(), verify that the refname is formatted correctly before
adding it to the ref_list.  Here we have to allow refname components
that start with ".", since (for example) the remote protocol uses
synthetic reference name ".have".  So add a new REFNAME_DOT_COMPONENT
flag that can be passed to check_refname_format() to allow leading
dots.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:31 -07:00
Michael Haggerty
7cb368421f resolve_ref(): expand documentation
Record information about resolve_ref(), hard-won via reverse
engineering, in a comment for future spelunkers.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:31 -07:00
Michael Haggerty
f989fea0e0 resolve_ref(): also treat a too-long SHA1 as invalid
If the SHA1 in a reference file is not terminated by a space or
end-of-file, consider it malformed and emit a warning.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:31 -07:00
Michael Haggerty
629cd3ac6d resolve_ref(): emit warnings for improperly-formatted references
While resolving references, if a reference is found that is in an
unrecognized format, emit a warning (and then fail, as before).
Wouldn't *you* want to know?

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:31 -07:00
Michael Haggerty
8384d78886 resolve_ref(): verify that the input refname has the right format
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:31 -07:00
Michael Haggerty
313fb010da resolve_ref(): do not follow incorrectly-formatted symbolic refs
Emit a warning and fail if a symbolic reference refers to an
incorrectly-formatted refname.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:31 -07:00
Michael Haggerty
c224ca7f66 resolve_ref(): extract a function get_packed_ref()
Making it a function and giving it a name makes the code clearer.  I
also have a strong suspicion that the function will find other uses in
the future.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:30 -07:00
Michael Haggerty
287750507d resolve_ref(): turn buffer into a proper string as soon as possible
Immediately strip off trailing spaces and null-terminate the string
holding the contents of the reference file; this allows the use of
string functions and avoids the need to keep separate track of the
string's length.  (get_sha1_hex() fails automatically if the string is
too short.)

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:30 -07:00
Michael Haggerty
1f58a03838 resolve_ref(): only follow a symlink that contains a valid, normalized refname
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:30 -07:00
Michael Haggerty
b54cb79597 resolve_ref(): use prefixcmp()
Terminate the link content string one step earlier, allowing
prefixcmp() to be used instead of the less clear memcmp().

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:30 -07:00
Michael Haggerty
7bb2bf8e5c resolve_ref(): explicitly fail if a symlink is not readable
Previously the failure came later, after a few steps in which the
length was treated like the actual length of a string.  Even though
the old code gave the same answers, it was somewhat misleading.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:30 -07:00
Michael Haggerty
a40e6fb67a Change check_refname_format() to reject unnormalized refnames
Since much of the infrastructure does not work correctly with
unnormalized refnames, change check_refname_format() to reject them.

Similarly, change "git check-ref-format" to reject unnormalized
refnames by default.  But add an option --normalize, which causes "git
check-ref-format" to normalize the refname before checking its format,
and print the normalized refname.  This is exactly the behavior of the
old --print option, which is retained but deprecated.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:30 -07:00
Michael Haggerty
7e9d2fe960 Do not allow ".lock" at the end of any refname component
Allowing any refname component to end with ".lock" is looking for
trouble; for example,

    $ git br foo.lock/bar
    $ git br foo
    fatal: Unable to create '[...]/.git/refs/heads/foo.lock': File exists.

Therefore, do not allow any refname component to end with ".lock".

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:30 -07:00
Michael Haggerty
49295d4e3f Refactor check_refname_format()
Among other things, extract a function check_refname_component().

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:29 -07:00
Michael Haggerty
8d9c50105f Change check_ref_format() to take a flags argument
Change check_ref_format() to take a flags argument that indicates what
is acceptable in the reference name (analogous to "git
check-ref-format"'s "--allow-onelevel" and "--refspec-pattern").  This
is more convenient for callers and also fixes a failure in the test
suite (and likely elsewhere in the code) by enabling "onelevel" and
"refspec-pattern" to be allowed independently of each other.

Also rename check_ref_format() to check_refname_format() to make it
obvious that it deals with refnames rather than references themselves.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:29 -07:00
Michael Haggerty
9224b73be0 Change bad_ref_char() to return a boolean value
Previously most bad characters were indicated by returning 1, but "*"
was special-cased to return 2 instead of 1.  One caller examined the
return value to see whether the special case occurred.

But it is easier (to document and understand) for bad_ref_char()
simply to return a boolean value, treating "*" like any other bad
character.  Special-case the handling of "*" (which only occurs in
very specific circumstances) at the caller.  The resulting calling
code thereby also becomes more transparent.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05 13:45:29 -07:00
Julian Phillips
e9c4c11165 refs: Use binary search to lookup refs faster
Currently we linearly search through lists of refs when we need to
find a specific ref.  This can be very slow if we need to lookup a
large number of refs.  By changing to a binary search we can make this
faster.

In order to be able to use a binary search we need to change from
using linked lists to arrays, which we can manage using ALLOC_GROW.

We can now also use the standard library qsort function to sort the
refs arrays.

Signed-off-by: Julian Phillips <julian@quantumfyre.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-09-30 12:28:34 -07:00
Julian Phillips
b4f223c636 Don't sort ref_list too early
get_ref_dir is called recursively for subdirectories, which means that
we were calling sort_ref_list for each directory of refs instead of
once for all the refs.  This is a massive wast of processing, so now
just call sort_ref_list on the result of the top-level get_ref_dir, so
that the sort is only done once.

In the common case of only a few different directories of refs the
difference isn't very noticable, but it becomes very noticeable when
you have a large number of direcotries containing refs (e.g. as
created by Gerrit).

Reported by Martin Fick.

Signed-off-by: Julian Phillips <julian@quantumfyre.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-09-26 18:30:38 -07:00
Junio C Hamano
3ab24efeef refs.c: make create_cached_refs() static
There is nobody outside that calls into this helper function.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-09-11 15:59:26 -07:00
Junio C Hamano
4b1108eec7 Merge branch 'mh/check-ref-format-print-normalize'
* mh/check-ref-format-print-normalize:
  Forbid DEL characters in reference names
  check-ref-format --print: Normalize refnames that start with slashes
2011-09-06 11:42:52 -07:00
Junio C Hamano
2730f55527 Merge branch 'nd/maint-clone-gitdir'
* nd/maint-clone-gitdir:
  clone: allow to clone from .git file
  read_gitfile_gently(): rename misnamed function to read_gitfile()
2011-08-28 21:20:28 -07:00
Michael Haggerty
f3738c1ce9 Forbid DEL characters in reference names
DEL is an ASCII control character and therefore should not be
permitted in reference names.  Add tests for this and other unusual
characters.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-27 11:47:49 -07:00
Junio C Hamano
13d6ec9133 read_gitfile_gently(): rename misnamed function to read_gitfile()
The function was not gentle at all to the callers and died without giving
them a chance to deal with possible errors. Rename it to read_gitfile(),
and update all the callers.

As no existing caller needs a true "gently" variant, we do not bother
adding one at this point.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-22 14:04:56 -07:00
Junio C Hamano
6ed547b53b Merge branch 'js/ref-namespaces'
* js/ref-namespaces:
  ref namespaces: tests
  ref namespaces: documentation
  ref namespaces: Support remote repositories via upload-pack and receive-pack
  ref namespaces: infrastructure
  Fix prefix handling in ref iteration functions
2011-08-17 17:35:38 -07:00
Michael Haggerty
0e88c130f2 Retain caches of submodule refs
Instead of keeping track of one cache for refs in the main repo and
another single cache shared among submodules, keep a linked list of
cached_refs objects, one for each module/submodule. Change
invalidate_cached_refs() to invalidate all caches. (Previously, it
only invalidated the cache of the main repo because the submodule
caches were not reused anyway.)

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-14 15:18:52 -07:00
Michael Haggerty
ce40979cf8 Store the submodule name in struct cached_refs
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-14 15:18:52 -07:00
Michael Haggerty
e5dbf6056f Allocate cached_refs objects dynamically
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-14 15:18:52 -07:00
Michael Haggerty
db4dd93a4a Change the signature of read_packed_refs()
Change it to return a (struct ref_list *) instead of writing into
a cached_refs structure.  (This removes the need to create a
cached_refs structure in resolve_gitlink_packed_ref(), where it
is otherwise unneeded.)

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-14 15:18:52 -07:00
Michael Haggerty
4349a66805 Access reference caches only through new function get_cached_refs()
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-14 15:18:52 -07:00
Michael Haggerty
f130b1168e Extract a function clear_cached_refs()
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-14 15:18:51 -07:00
Josh Triplett
a1bea2c1fc ref namespaces: infrastructure
Add support for dividing the refs of a single repository into multiple
namespaces, each of which can have its own branches, tags, and HEAD.
Git can expose each namespace as an independent repository to pull from
and push to, while sharing the object store, and exposing all the refs
to operations such as git-gc.

Storing multiple repositories as namespaces of a single repository
avoids storing duplicate copies of the same objects, such as when
storing multiple branches of the same source.  The alternates mechanism
provides similar support for avoiding duplicates, but alternates do not
prevent duplication between new objects added to the repositories
without ongoing maintenance, while namespaces do.

To specify a namespace, set the GIT_NAMESPACE environment variable to
the namespace.  For each ref namespace, git stores the corresponding
refs in a directory under refs/namespaces/.  For example,
GIT_NAMESPACE=foo will store refs under refs/namespaces/foo/.  You can
also specify namespaces via the --namespace option to git.

Note that namespaces which include a / will expand to a hierarchy of
namespaces; for example, GIT_NAMESPACE=foo/bar will store refs under
refs/namespaces/foo/refs/namespaces/bar/.  This makes paths in
GIT_NAMESPACE behave hierarchically, so that cloning with
GIT_NAMESPACE=foo/bar produces the same result as cloning with
GIT_NAMESPACE=foo and cloning from that repo with GIT_NAMESPACE=bar.  It
also avoids ambiguity with strange namespace paths such as
foo/refs/heads/, which could otherwise generate directory/file conflicts
within the refs directory.

Add the infrastructure for ref namespaces: handle the GIT_NAMESPACE
environment variable and --namespace option, and support iterating over
refs in a namespace.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Jamey Sharp <jamey@minilop.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-07-06 11:19:24 -07:00
Josh Triplett
b3cfc4066d Fix prefix handling in ref iteration functions
The do_for_each_ref iteration function accepts a prefix and a trim, and
checks for the prefix on each ref before passing in that ref; it also
supports trimming off part of the ref before passing it.  However,
do_for_each_ref used trim as the length of the prefix to check, ignoring
the actual length of the prefix.  Switch to using prefixcmp, checking
the entire length of the prefix string, to properly support a trim value
different than the length of the prefix.

Several callers passed a prefix of "refs/" to filter out everything
outside of refs/, but a trim of 0 to avoid trimming off the "refs/"; the
trim of 0 meant that the filter of "refs/" no longer applied.  Change
these callers to pass an empty prefix instead, to avoid changing the
existing behavior.  Various callers count on this lack of filtering,
such as receive-pack which uses add_extra_ref to add alternates as refs
named ".have"; adding filtering would break that, causing
t5501-fetch-push-alternates.sh to fail.  That lack of filtering doesn't
currently have any other effect, since the loose ref functions can never
supply refs outside of "refs/", and packed-refs will not normally
include such refs unless manually edited.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Jamey Sharp <jamey@minilop.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-07-06 11:12:01 -07:00
Junio C Hamano
b985f2aeca Merge branch 'jc/maint-1.7.3-checkout-describe'
* jc/maint-1.7.3-checkout-describe:
  checkout -b <name>: correctly detect existing branch
2011-06-29 17:03:12 -07:00
Dmitry Ivankov
7be8b3baba Fix typo: existant->existent
refs.c had a error message "Trying to write ref with nonexistant object".
And no tests relied on the wrong spelling.
Also typo was present in some test scripts internals, these tests still pass.

Signed-off-by: Dmitry Ivankov <divanorama@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-06-16 10:33:50 -07:00
Junio C Hamano
c17b229454 checkout -b <name>: correctly detect existing branch
When create a new branch, we fed "refs/heads/<proposed name>" as a string
to get_sha1() and expected it to fail when a branch already exists.

The right way to check if a ref exists is to check with resolve_ref().

A naïve solution that might appear attractive but does not work is to
forbid slashes in get_describe_name() but that will not work. A describe
name is is in the form of "ANYTHING-g<short sha1>", and that ANYTHING part
comes from a original tag name used in the repository the user ran the
describe command. A sick user could have a confusing hierarchical tag
whose name is "refs/heads/foobar" (stored as refs/tags/refs/heads/foobar")
to generate a describe name "refs/heads/foobar-6-g02ac983", and we should
be able to use that name to refer to the object whose name is 02ac983.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-06-05 22:17:04 -07:00
Junio C Hamano
2d984464c6 Merge branch 'hv/submodule-find-ff-merge'
* hv/submodule-find-ff-merge:
  Implement automatic fast-forward merge for submodules
  setup_revisions(): Allow walking history in a submodule
  Teach ref iteration module about submodules

Conflicts:
	submodule.c
2010-08-21 23:27:59 -07:00
Junio C Hamano
fcd91f8de2 Merge branch 'maint'
* maint:
  backmerge a few more fixes to 1.7.1.X series
  rev-parse: fix --parse-opt --keep-dashdash --stop-at-non-option
  fix git branch -m in presence of cross devices

Conflicts:
	RelNotes
	builtin/rev-parse.c
2010-07-07 11:18:26 -07:00
Heiko Voigt
9ef6aeb09f setup_revisions(): Allow walking history in a submodule
By passing the path to a submodule in opt->submodule, the function can
be used to walk history in the named submodule repository, instead of
the toplevel repository.

Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-07 09:48:33 -07:00
Heiko Voigt
0bad611b1e Teach ref iteration module about submodules
We will use this in a later patch to extend setup_revisions() to
load revisions directly from a submodule.

Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-07 09:48:21 -07:00
Pierre Habouzit
765c22588d fix git branch -m in presence of cross devices
When you have for example a bare repository stored on NFS, and that you
create new workdirs locally (using contrib's git-new-workdir), logs/refs
is a symlink to a different device. Hence when the reflogs are renamed,
all must happen below logs/refs or one gets cross device rename errors
like:

  git branch -m foo
  error: unable to move logfile logs/refs/heads/master to tmp-renamed-log: Invalid cross-device link
  fatal: Branch rename failed

The fix is hence to use logs/refs/.tmp-renamed-log as a temporary log
name, instead of just tmp-renamed-log.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-07 09:17:00 -07:00
Junio C Hamano
8d676d85f7 Merge branch 'gv/portable'
* gv/portable:
  test-lib: use DIFF definition from GIT-BUILD-OPTIONS
  build: propagate $DIFF to scripts
  Makefile: Tru64 portability fix
  Makefile: HP-UX 10.20 portability fixes
  Makefile: HPUX11 portability fixes
  Makefile: SunOS 5.6 portability fix
  inline declaration does not work on AIX
  Allow disabling "inline"
  Some platforms lack socklen_t type
  Make NO_{INET_NTOP,INET_PTON} configured independently
  Makefile: some platforms do not have hstrerror anywhere
  git-compat-util.h: some platforms with mmap() lack MAP_FAILED definition
  test_cmp: do not use "diff -u" on platforms that lack one
  fixup: do not unconditionally disable "diff -u"
  tests: use "test_cmp", not "diff", when verifying the result
  Do not use "diff" found on PATH while building and installing
  enums: omit trailing comma for portability
  Makefile: -lpthread may still be necessary when libc has only pthread stubs
  Rewrite dynamic structure initializations to runtime assignment
  Makefile: pass CPPFLAGS through to fllow customization

Conflicts:
	Makefile
	wt-status.h
2010-06-21 06:02:44 -07:00
Thomas Rast
157aaea5ff log_ref_setup: don't return stack-allocated array
859c301 (refs: split log_ref_write logic into log_ref_setup,
2010-05-21) refactors the stack allocation of the log_file array into
the new log_ref_setup() function, but passes it back to the caller.

Since the original intent seems to have been to split the work between
log_ref_setup and log_ref_write, make it the caller's responsibility
to allocate the buffer.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Reported-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-12 09:34:17 -07:00
Erick Mattos
859c30175f refs: split log_ref_write logic into log_ref_setup
Separation of the logic for testing and preparing the reflogs from
function log_ref_write to a new non static new function: log_ref_setup.

This allows to be performed from outside the first all reasonable checks
and procedures for writing reflogs.

Signed-off-by: Erick Mattos <erick.mattos@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-02 11:17:46 -07:00
Gary V. Vaughan
66dbfd55e3 Rewrite dynamic structure initializations to runtime assignment
Unfortunately, there are still plenty of production systems with
vendor compilers that choke unless all compound declarations can be
determined statically at compile time, for example hpux10.20 (I can
provide a comprehensive list of our supported platforms that exhibit
this problem if necessary).

This patch simply breaks apart any compound declarations with dynamic
initialisation expressions, and moves the initialisation until after
the last declaration in the same block, in all the places necessary to
have the offending compilers accept the code.

Signed-off-by: Gary V. Vaughan <gary@thewrittenword.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-05-31 16:59:26 -07:00
Michael J Gruber
b2e256b0f0 refs.c: Write reflogs for notes just like for branch heads
The notes code intends to write reflog entries, but currently they are
not written because log_ref_write() checks for the refname path
explicitly.

Add refs/notes to the list of allowed paths so that notes references are
treated just like branch heads, i.e. according to core.logAllRefUpdates
and core.bare.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Acked-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-29 21:18:07 -07:00
Junio C Hamano
a86ed83cce Merge branch 'tr/notes-display'
* tr/notes-display:
  git-notes(1): add a section about the meaning of history
  notes: track whether notes_trees were changed at all
  notes: add shorthand --ref to override GIT_NOTES_REF
  commit --amend: copy notes to the new commit
  rebase: support automatic notes copying
  notes: implement helpers needed for note copying during rewrite
  notes: implement 'git notes copy --stdin'
  rebase -i: invoke post-rewrite hook
  rebase: invoke post-rewrite hook
  commit --amend: invoke post-rewrite hook
  Documentation: document post-rewrite hook
  Support showing notes from more than one notes tree
  test-lib: unset GIT_NOTES_REF to stop it from influencing tests

Conflicts:
	git-am.sh
	refs.c
2010-03-24 16:26:43 -07:00
Junio C Hamano
954f7cfdac Merge branch 'jc/maint-refs-dangling'
* jc/maint-refs-dangling:
  refs: ref entry with NULL sha1 is can be a dangling symref
2010-03-24 16:25:34 -07:00
Junio C Hamano
e01de1c912 refs: ref entry with NULL sha1 is can be a dangling symref
Brandon Casey noticed that t5505 had accidentally broken its && chain,
hiding inconsistency between the code that writes the warning to the
standard output and the test that expects to see the warning on the
standard error, which was introduced by f8948e2 (remote prune: warn
dangling symrefs, 2009-02-08).

It turns out that the issue is deeper than that.  After f8948e2, a symref
that is dangling is marked with a NULL sha1, and the idea of using NULL
sha1 to mean a deleted ref was scrapped, but somehow a follow-up eafb452
(do_one_ref(): null_sha1 check is not about broken ref, 2009-07-22)
incorrectly reorganized do_one_ref(), still thinking NULL sha1 is never
used in the code.

Fix this by:

 - adopt Brandon's fix to t5505 test;

 - introduce REF_BROKEN flag to mark a ref that fails to resolve (dangling
   symref);

 - move the check for broken ref back inside the "if we are skipping
   dangling refs" code block.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-15 23:37:42 -07:00
René Scharfe
8ca7880356 for_each_recent_reflog_ent(): use strbuf, fix offset handling
As Vladimir reported, "git log -g refs/stash" surprisingly showed the reflog
of HEAD if the message in the reflog file was too long.  To fix this, convert
for_each_recent_reflog_ent() to use strbuf_getwholeline() instead of fgets(),
for safety and to avoid any size limits for reflog entries.

Also reverse the logic of the part of the function that only looks at file
tails.  It used to close the file if fgets() succeeded.  The following
fgets() call in the while loop was likely to fail in this case, too, so
passing an offset to for_each_recent_reflog_ent() never worked.  Change it to
error out if strbuf_getwholeline() fails instead.

Reported-by: Vladimir Panteleev <vladimir@thecybershadow.net>
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-13 13:18:09 -08:00
Thomas Rast
894a9d333e Support showing notes from more than one notes tree
With this patch, you can set notes.displayRef to a glob that points at
your favourite notes refs, e.g.,

[notes]
	displayRef = refs/notes/*

Then git-log and friends will show notes from all trees.

Thanks to Junio C Hamano for lots of feedback, which greatly
influenced the design of the entire series and this commit in
particular.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Acked-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-12 21:55:39 -08:00
Junio C Hamano
9517e6b843 Typofixes outside documentation area
begining -> beginning
    canonicalizations -> canonicalization
    comand -> command
    dewrapping -> unwrapping
    dirtyness -> dirtiness
    DISCLAMER -> DISCLAIMER
    explicitely -> explicitly
    feeded -> fed
    impiled -> implied
    madatory -> mandatory
    mimick -> mimic
    preceeding -> preceding
    reqeuest -> request
    substition -> substitution

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-03 21:28:17 -08:00
Ilari Liusvaara
b09fe971de rev-parse --branches/--tags/--remotes=pattern
Since local branch, tags and remote tracking branch namespaces are
most often used, add shortcut notations for globbing those in
manner similar to --glob option.

With this, one can express the "what I have but origin doesn't?"
as:

'git log --branches --not --remotes=origin'

Original-idea-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-20 12:30:25 -08:00
Ilari Liusvaara
d08bae7e22 rev-parse --glob
Add --glob=<glob-pattern> option to rev-parse and everything that
accepts its options. This option matches all refs that match given
shell glob pattern (complete with some DWIM logic).

Example:

'git log --branches --not --glob=remotes/origin'

To show what you have that origin doesn't.

Signed-off-by: Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-20 12:29:05 -08:00
Jay Soffian
3cf6134ad0 teach warn_dangling_symref to take a FILE argument
Different callers of warn_dangling_symref() may want to control whether its
output goes to stdout or stderr so let it take a FILE argument.

Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-11-10 01:01:47 -08:00
Miklos Vajna
1b018fd9be git branch -D: give a better error message when lockfile creation fails
Previously the old error message just told the user that it was not
possible to delete the ref from the packed-refs file. Give instructions
on how to resolve the problem.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2009-09-29 08:14:47 -07:00
Junio C Hamano
f00ecbe42b Merge branch 'cc/replace'
* cc/replace:
  t6050: check pushing something based on a replaced commit
  Documentation: add documentation for "git replace"
  Add git-replace to .gitignore
  builtin-replace: use "usage_msg_opt" to give better error messages
  parse-options: add new function "usage_msg_opt"
  builtin-replace: teach "git replace" to actually replace
  Add new "git replace" command
  environment: add global variable to disable replacement
  mktag: call "check_sha1_signature" with the replacement sha1
  replace_object: add a test case
  object: call "check_sha1_signature" with the replacement sha1
  sha1_file: add a "read_sha1_file_repl" function
  replace_object: add mechanism to replace objects found in "refs/replace/"
  refs: add a "for_each_replace_ref" function
2009-08-21 18:47:53 -07:00
Junio C Hamano
a0f4afbe87 clean: require double -f options to nuke nested git repository and work tree
When you have an embedded git work tree in your work tree (be it
an orphaned submodule, or an independent checkout of an unrelated
project), "git clean -d -f" blindly descended into it and removed
everything.  This is rarely what the user wants.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-29 12:22:30 -07:00
Junio C Hamano
f87dd2152a Merge branch 'maint'
* maint:
  SunOS grep does not understand -C<n> nor -e
  Fix export_marks() error handling.
  git branch: clean up detached branch handling
  git branch: avoid unnecessary object lookups
  git branch: fix performance problem
  do_one_ref(): null_sha1 check is not about broken ref

Conflicts:
	Makefile
2009-07-24 09:27:09 -07:00
Junio C Hamano
eafb45265b do_one_ref(): null_sha1 check is not about broken ref
f8948e2 (remote prune: warn dangling symrefs, 2009-02-08) introduced a
more dangerous variant of for_each_ref() family that skips the check for
dangling refs, but it also made another unrelated check optional by
mistake.

The check to see if a ref points at 0{40} is not about brokenness, but is
about a possible future plan to represent a deleted ref by writing 40 "0"
in a loose ref when there is a stale version of the same ref already in
.git/packed-refs, so that we can implement deletion of a ref without
having to rewrite the packed refs file excluding the ref being deleted.

This check has to live outside of the conditional.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-22 23:07:05 -07:00
Junio C Hamano
58b1ef2f0f Merge branch 'maint'
* maint:
  checkout -f: deal with a D/F conflict entry correctly
  sha1_name.c: avoid unnecessary strbuf_release
  refs.c: release file descriptor on error return
2009-07-18 16:57:47 -07:00
Brandon Casey
9d33f7c22f refs.c: release file descriptor on error return
Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-16 15:07:24 -07:00
Thomas Rast
d824cbba02 Convert existing die(..., strerror(errno)) to die_errno()
Change calls to die(..., strerror(errno)) to use the new die_errno().

In the process, also make slight style adjustments: at least state
_something_ about the function that failed (instead of just printing
the pathname), and put paths in single quotes.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-27 11:14:53 -07:00
Christian Couder
292687003a refs: add a "for_each_replace_ref" function
This is some preparation work for the following patches that are using
the "refs/replace/" ref namespace.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-31 17:02:59 -07:00
Junio C Hamano
23807fa008 Merge branch 'maint'
* maint:
  Prepare for 1.6.3.2
  fix cat-file usage message and documentation
  fetch: report ref storage DF errors more accurately
  lock_ref: inform callers of unavailable ref
  merge-options.txt: Clarify merge --squash

Conflicts:
	RelNotes
2009-05-25 19:44:52 -07:00
Junio C Hamano
2c5942dbae Merge branch 'ar/unlink-err' into maint
* ar/unlink-err:
  print unlink(2) errno in copy_or_link_directory
  replace direct calls to unlink(2) with unlink_or_warn
  Introduce an unlink(2) wrapper which gives warning if unlink failed
2009-05-25 19:01:50 -07:00
Jeff King
f475e08edb lock_ref: inform callers of unavailable ref
One of the ways that locking might fail is that there is a
DF conflict between two refs (e.g., you want to lock
"foo/bar" but "foo" already exists). In this case, we return
an error, but there is no way for the caller to know the
specific problem.

This patch sets errno to ENOTDIR, which is the most sensible
code. It's what we would see if the refs were stored purely
in the filesystem (but these days we must check the
namespace manually due to packed refs).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-25 12:06:54 -07:00
Junio C Hamano
44ee247f8d Merge branch 'fc/decorate-tag'
* fc/decorate-tag:
  Prettify log decorations even more
  Change prettify_ref to prettify_refname
2009-05-23 01:43:50 -07:00
Junio C Hamano
e05aae684d Merge branch 'rr/forbid-bs-in-ref'
* rr/forbid-bs-in-ref:
  Disallow '\' in ref names
2009-05-23 01:39:45 -07:00
Felipe Contreras
4577e48364 Change prettify_ref to prettify_refname
In preparation to be used when the ref object is not available

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-13 20:55:48 -07:00
Robin Rosenberg
a4c2e69936 Disallow '\' in ref names
This is asking for trouble since '\' is a directory separator in
Windows and thus may produce unpredictable results.

Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-09 01:35:49 -07:00
Alex Riesen
691f1a28bf replace direct calls to unlink(2) with unlink_or_warn
This helps to notice when something's going wrong, especially on
systems which lock open files.

I used the following criteria when selecting the code for replacement:
- it was already printing a warning for the unlink failures
- it is in a function which already printing something or is
  called from such a function
- it is in a static function, returning void and the function is only
  called from a builtin main function (cmd_)
- it is in a function which handles emergency exit (signal handlers)
- it is in a function which is obvously cleaning up the lockfiles

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-29 18:37:41 -07:00
Bert Wesarg
6e7b3309d3 shorten_unambiguous_ref(): add strict mode
Add the strict mode of abbreviation to shorten_unambiguous_ref(), i.e. the
resulting ref won't trigger the ambiguous ref warning.

All users of shorten_unambiguous_ref() still use the loose mode.

Signed-off-by: Bert Wesarg <bert.wesarg@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-13 09:36:44 -07:00
Junio C Hamano
3e52effcf6 Merge branch 'jk/show-upstream'
* jk/show-upstream:
  branch: show upstream branch when double verbose
  make get_short_ref a public function
  for-each-ref: add "upstream" format field
  for-each-ref: refactor refname handling
  for-each-ref: refactor get_short_ref function
2009-04-12 16:46:42 -07:00
Junio C Hamano
6e353a5e5d Merge branch 'cc/bisect-filter'
* cc/bisect-filter: (21 commits)
  rev-list: add "int bisect_show_flags" in "struct rev_list_info"
  rev-list: remove last static vars used in "show_commit"
  list-objects: add "void *data" parameter to show functions
  bisect--helper: string output variables together with "&&"
  rev-list: pass "int flags" as last argument of "show_bisect_vars"
  t6030: test bisecting with paths
  bisect: use "bisect--helper" and remove "filter_skipped" function
  bisect: implement "read_bisect_paths" to read paths in "$GIT_DIR/BISECT_NAMES"
  bisect--helper: implement "git bisect--helper"
  bisect: use the new generic "sha1_pos" function to lookup sha1
  rev-list: call new "filter_skip" function
  patch-ids: use the new generic "sha1_pos" function to lookup sha1
  sha1-lookup: add new "sha1_pos" function to efficiently lookup sha1
  rev-list: pass "revs" to "show_bisect_vars"
  rev-list: make "show_bisect_vars" non static
  rev-list: move code to show bisect vars into its own function
  rev-list: move bisect related code into its own file
  rev-list: make "bisect_list" variable local to "cmd_rev_list"
  refs: add "for_each_ref_in" function to refactor "for_each_*_ref" functions
  quote: add "sq_dequote_to_argv" to put unwrapped args in an argv array
  ...
2009-04-12 16:46:40 -07:00
Jeff King
7c2b3029df make get_short_ref a public function
Often we want to shorten a full ref name to something "prettier"
to show a user. For example, "refs/heads/master" is often shown
simply as "master", or "refs/remotes/origin/master" is shown as
"origin/master".

Many places in the code use a very simple formula: skip common
prefixes like refs/heads, refs/remotes, etc. This is codified in
the prettify_ref function.

for-each-ref has a more correct (but more expensive) approach:
consider the ref lookup rules, and try shortening as much as
possible while remaining unambiguous.

This patch makes the latter strategy globally available as
shorten_unambiguous_ref.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-07 23:22:15 -07:00
Junio C Hamano
fbdc05661d Merge branch 'jc/name-branch'
* jc/name-branch:
  Don't permit ref/branch names to end with ".lock"
  check_ref_format(): tighten refname rules
  strbuf_check_branch_ref(): a helper to check a refname for a branch
  Fix branch -m @{-1} newname
  check-ref-format --branch: give Porcelain a way to grok branch shorthand
  strbuf_branchname(): a wrapper for branch name shorthands
  Rename interpret/substitute nth_last_branch functions

Conflicts:
	Documentation/git-check-ref-format.txt
2009-04-06 00:43:44 -07:00
Junio C Hamano
5aaa507b06 Merge branch 'cc/sha1-bsearch' into HEAD
* cc/sha1-bsearch: (95 commits)
  patch-ids: use the new generic "sha1_pos" function to lookup sha1
  sha1-lookup: add new "sha1_pos" function to efficiently lookup sha1
  Update draft release notes to 1.6.3
  GIT 1.6.2.2
  send-email: ensure quoted addresses are rfc2047 encoded
  send-email: correct two tests which were going interactive
  Documentation: git-svn: fix trunk/fetch svn-remote key typo
  Mailmap: Allow empty email addresses to be mapped
  Cleanup warning about known issues in cvsimport documentation
  Documentation: Remove an odd "instead"
  send-email: ask_default should apply to all emails, not just the first
  send-email: don't attempt to prompt if tty is closed
  fix portability problem with IS_RUN_COMMAND_ERR
  Documentation: use "spurious .sp" XSLT if DOCBOOK_SUPPRESS_SP is set
  mailmap: resurrect lower-casing of email addresses
  builtin-clone.c: no need to strdup for setenv
  builtin-clone.c: make junk_pid static
  git-svn: add a double quiet option to hide git commits
  Update draft release notes to 1.6.2.2
  Documentation: push.default applies to all remotes
  ...
2009-04-04 23:04:50 -07:00
Christian Couder
2a8177b63d refs: add "for_each_ref_in" function to refactor "for_each_*_ref" functions
The "for_each_{tag,branch,remote,replace,}_ref" functions are
redefined in terms of "for_each_ref_in" so that we can lose the
hardcoded length of prefix strings from the code.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
2009-03-30 01:22:53 -07:00
Junio C Hamano
f23336f5c1 Merge branch 'db/push-cleanup'
* db/push-cleanup:
  Move push matching and reporting logic into transport.c
  Use a common function to get the pretty name of refs

Conflicts:
	transport.c
2009-03-26 00:28:46 -07:00
Shawn O. Pearce
3e262b95c5 Don't permit ref/branch names to end with ".lock"
We already skip over loose refs under $GIT_DIR/refs if the name
ends with ".lock", so creating a branch named "foo.lock" will not
appear in the output of "git branch", "git for-each-ref", nor will
its commit be considered reachable by "git rev-list --all".

In the latter case this is especially evil, as it may cause
repository corruption when objects reachable only through such a
ref are deleted by "git prune".

It should be reasonably safe to deny use of ".lock" as a ref suffix.
In prior versions of Git such branches would be "phantom branches";
you can create it, but you can't see it in "git branch" output.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-24 17:02:20 -07:00
Junio C Hamano
cbdffe4093 check_ref_format(): tighten refname rules
This changes the rules for refnames to forbid:

 (1) a refname that contains "@{" in it.

     Some people and foreign SCM converter may have named their branches
     as frotz@24 and we still want to keep supporting it.

     However, "git branch frotz@{24}" is a disaster.  It cannot even
     checked out because "git checkout frotz@{24}" will interpret it as
     "detach the HEAD at twenty-fourth reflog entry of the frotz branch".

 (2) a refname that ends with a dot.

     We already reject a path component that begins with a dot, primarily
     to avoid ambiguous range interpretation.  If we allowed ".B" as a
     valid ref, it is unclear if "A...B" means "in dot-B but not in A" or
     "either in A or B but not in both".

     But for this to be complete, we need also to forbid "A." to avoid "in
     B but not in A-dot".  This was not a problem in the original range
     notation, but we should have added this restriction when three-dot
     notation was introduced.

     Unlike "no dot at the beginning of any path component" rule, this
     rule does not have to be "no dot at the end of any path component",
     because you cannot abbreviate the tail end away, similar to you can
     say "dot-B" to mean "refs/heads/dot-B".

For these reasons, it is not likely people created branches with these
names on purpose, but we have allowed such names to be used for quite some
time, and it is possible that people created such branches by mistake or
by accident.

To help people with branches with such unfortunate names to recover,
we still allow "branch -d 'bad.'" to delete such branches, and also allow
"branch -m bad. good" to rename them.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-24 00:53:03 -07:00
Miklos Vajna
edbc25c5b3 refs: use warning() instead of fprintf(stderr, "warning: ")
Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-23 21:02:28 -07:00
Daniel Barkalow
a9c37a72c4 Use a common function to get the pretty name of refs
The result should be consistent between fetch and push, so we ought to
use the same code in both cases, even though it's short.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-09 15:41:16 -07:00
Junio C Hamano
5ad6b0252b Adjust js/remote-improvements and db/refspec-wildcard-in-the-middle
The latter topic changes the definition of how refspec's src and dst side
is stored in-core; it used to be that the asterisk for pattern was
omitted, but now it is included.  The former topic handcrafts an old style
refspec to feed the refspec matching machinery that lacks the asterisk and
triggers an error.

This resolves the semantic clash between the two topics early before they
need to be merged to integration branches.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-08 00:24:21 -08:00
Daniel Barkalow
abd2bde78b Support '*' in the middle of a refspec
In order to keep the requirements strict, each * has to be a full path
component, and there may only be one * per side. This requirement is
enforced entirely by check_ref_format(); the matching implementation
will substitute the whatever matches the * in the lhs for the * in the
rhs.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-07 12:19:28 -08:00
Daniel Barkalow
08fbdb3043 Keep '*' in pattern refspecs
In order to do anything more capable with refspecs, the first step is
to keep the entire input. Additionally, validate patterns by checking
for the ref matching the rules for a pattern as given by
check_ref_format(). This requires a slight change to
check_ref_format() to make it enforce the requirement that the '*'
immediately follow a '/'.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-07 12:19:24 -08:00
Jeff King
5483f79998 refactor find_ref_by_name() to accept const list
Since it doesn't actually touch its argument, this makes
sense.

However, we still want to return a non-const version (which
requires a cast) so that this:

  struct ref *a, *b;
  a = find_ref_by_name(b);

works. Unfortunately, you can also silently strip the const
from a variable:

  struct ref *a;
  const struct ref *b;
  a = find_ref_by_name(b);

This is a classic C const problem because there is no way to
say "return the type with the same constness that was passed
to us"; we provide the same semantics as standard library
functions like strchr.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-26 00:49:44 -08:00
Junio C Hamano
f8948e2fbc remote prune: warn dangling symrefs
If you prune from the remote "frotz" that deleted the ref your tracking
branch remotes/frotz/HEAD points at, the symbolic ref will become
dangling.  We used to detect this as an error condition and issued a
message every time refs are enumerated.

This stops the error message, but moves the warning to "remote prune".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-10 22:26:20 -08:00
Junio C Hamano
101d15e097 Introduce for_each_recent_reflog_ent().
This can be used to scan only the last few kilobytes of a reflog, as a
cheap optimization when the data you are looking for is likely to be
found near the end of it.  The caller is expected to fall back to the
full scan if that is not the case.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-19 22:18:29 -08:00
Junio C Hamano
8bb4646dae Merge branch 'maint'
* maint:
  Fix non-literal format in printf-style calls
  git-submodule: Avoid printing a spurious message.
  git ls-remote: make usage string match manpage
  Makefile: help people who run 'make check' by mistake
2008-11-11 14:49:50 -08:00
Daniel Lowe
9db56f71b9 Fix non-literal format in printf-style calls
These were found using gcc 4.3.2-1ubuntu11 with the warning:

    warning: format not a string literal and no format arguments

Incorporated suggestions from Brandon Casey <casey@nrlssc.navy.mil>.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-11 14:43:59 -08:00
Junio C Hamano
bc9c0248a5 Merge branch 'maint'
* maint:
  GIT 1.6.0.4
  Update RPM spec for the new location of git-cvsserver.
  push: fix local refs update if already up-to-date
  do not force write of packed refs

Conflicts:
	builtin-revert.c
2008-11-08 21:33:55 -08:00
Junio C Hamano
832e719d79 Merge branch 'cb/maint-update-ref-fix' into maint
* cb/maint-update-ref-fix:
  push: fix local refs update if already up-to-date
  do not force write of packed refs
2008-11-08 17:32:49 -08:00
Junio C Hamano
8b1981d32b Merge branch 'ar/maint-mksnpath' into maint
* ar/maint-mksnpath:
  Use git_pathdup instead of xstrdup(git_path(...))
  git_pathdup: returns xstrdup-ed copy of the formatted path
  Fix potentially dangerous use of git_path in ref.c
  Add git_snpath: a .git path formatting routine with output buffer
  Fix potentially dangerous uses of mkpath and git_path
  Fix mkpath abuse in dwim_ref and dwim_log of sha1_name.c
  Add mksnpath which allows you to specify the output buffer

Conflicts:
	builtin-revert.c
	rerere.c
2008-11-08 16:13:19 -08:00
Junio C Hamano
3b8572a429 Merge branch 'mv/maint-branch-m-symref' into maint
* mv/maint-branch-m-symref:
  update-ref --no-deref -d: handle the case when the pointed ref is packed
  git branch -m: forbid renaming of a symref
  Fix git update-ref --no-deref -d.
  rename_ref(): handle the case when the reflog of a ref does not exist
  Fix git branch -m for symrefs.
2008-11-08 16:07:37 -08:00
Clemens Buchacher
5bdd8d4a30 do not force write of packed refs
We force writing a ref if it does not exist. Originally, we only had to look
for the ref file to check if it existed. Now we have to look for a packed ref
as well. Luckily, resolve_ref already does all the work for us.

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-05 14:09:43 -08:00
Junio C Hamano
a1a846a19e Merge branch 'ar/mksnpath'
* ar/mksnpath:
  Use git_pathdup instead of xstrdup(git_path(...))
  git_pathdup: returns xstrdup-ed copy of the formatted path
  Fix potentially dangerous use of git_path in ref.c
  Add git_snpath: a .git path formatting routine with output buffer
  Fix potentially dangerous uses of mkpath and git_path
  Fix potentially dangerous uses of mkpath and git_path
  Fix mkpath abuse in dwim_ref and dwim_log of sha1_name.c
  Add mksnpath which allows you to specify the output buffer

Conflicts:
	builtin-revert.c
2008-11-05 11:35:53 -08:00
Junio C Hamano
efcce2e1f0 Merge branch 'mv/maint-branch-m-symref'
* mv/maint-branch-m-symref:
  update-ref --no-deref -d: handle the case when the pointed ref is packed
  git branch -m: forbid renaming of a symref
  Fix git update-ref --no-deref -d.
  rename_ref(): handle the case when the reflog of a ref does not exist
  Fix git branch -m for symrefs.
2008-11-05 11:33:19 -08:00
Miklos Vajna
045a476f91 update-ref --no-deref -d: handle the case when the pointed ref is packed
In this case we did nothing in the past, but we should delete the
reference in fact.

The problem was that when the symref is not packed but the referenced
ref is packed, then we assumed that the symref is packed as well, but
symrefs are never packed.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-31 22:41:55 -07:00
Junio C Hamano
98b35e2c74 Merge branch 'ar/maint-mksnpath' into ar/mksnpath
* ar/maint-mksnpath:
  Use git_pathdup instead of xstrdup(git_path(...))
  git_pathdup: returns xstrdup-ed copy of the formatted path
  Fix potentially dangerous use of git_path in ref.c
  Add git_snpath: a .git path formatting routine with output buffer

Conflicts:
	builtin-revert.c
	refs.c
	rerere.c
2008-10-30 18:08:58 -07:00
Alex Riesen
a4f34cbb4c Use git_pathdup instead of xstrdup(git_path(...))
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-30 17:52:24 -07:00
Alex Riesen
958a4789e0 Fix potentially dangerous use of git_path in ref.c
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-30 17:18:29 -07:00
Miklos Vajna
fa58186c9b git branch -m: forbid renaming of a symref
There may be cases where one would really want to rename the symbolic
ref without changing its value, but "git branch -m" is not such a
use-case.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-30 13:50:48 -07:00
Miklos Vajna
450d4c0f5a rename_ref(): handle the case when the reflog of a ref does not exist
We tried to check if a reflog of a ref is a symlink without first
checking if it exists, which is a bug.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-26 14:43:26 -07:00
Miklos Vajna
eca35a25a9 Fix git branch -m for symrefs.
This had two problems with symrefs. First, it copied the actual sha1
instead of the "pointer", second it failed to remove the old ref after a
successful rename.

Given that till now delete_ref() always dereferenced symrefs, a new
parameters has been introduced to delete_ref() to allow deleting refs
without a dereference.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-26 14:42:57 -07:00
Junio C Hamano
a157400c97 Merge branch 'jc/maint-co-track'
* jc/maint-co-track:
  Enhance hold_lock_file_for_{update,append}() API
  demonstrate breakage of detached checkout with symbolic link HEAD
  Fix "checkout --track -b newbranch" on detached HEAD

Conflicts:
	builtin-commit.c
2008-10-21 17:58:11 -07:00
Junio C Hamano
acd3b9eca8 Enhance hold_lock_file_for_{update,append}() API
This changes the "die_on_error" boolean parameter to a mere "flags", and
changes the existing callers of hold_lock_file_for_update/append()
functions to pass LOCK_DIE_ON_ERROR.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-19 12:35:37 -07:00
Christian Couder
4886b89f8f refs: improve comments about "reading" argument of "resolve_ref"
The existing in-code comment was misleading.  An access that is not
"reading" may often be "writing", but it does not have to be.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-09 08:34:00 -07:00
Junio C Hamano
bb293b831b Merge branch 'maint'
* maint:
  Start preparing release notes for 1.5.6.3
  git-submodule - Fix bugs in adding an existing repo as a module
  bash: offer only paths after '--'
  Remove unnecessary pack-*.keep file after successful git-clone
  make deleting a missing ref more quiet
2008-07-09 00:19:50 -07:00
Jeff King
d1a4489a56 avoid null SHA1 in oldest reflog
When the user specifies a ref by a reflog entry older than
one we have (e.g., "HEAD@{20 years ago"}), we issue a
warning and give them the "from" value of the oldest reflog
entry. That is, we say "we don't know what happened before
this entry, but before this we know we had some particular
SHA1".

However, the oldest reflog entry is often a creation event
such as clone or branch creation. In this case, the entry
claims that the ref went from "00000..." (the null sha1) to
the new value, and the reflog lookup returns the null sha1.

While this is technically correct (the entry tells us that
the ref didn't exist at the specified time) it is not
terribly useful to the end user. What they probably want
instead is "the oldest useful sha1 that this ref ever had".
This patch changes the behavior such that if the oldest ref
would return the null sha1, it instead returns the first
value the ref ever had.

We never discovered this problem in the test scripts because
we created "fake" reflogs that had only a specified segment
of history. This patch updates the tests with a creation
event at the beginning of history.

Signed-off-by: Jeff King <peff@peff.net>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-08 13:57:27 -07:00
Jeff King
0b294c0abf make deleting a missing ref more quiet
If git attempts to delete a ref, but the unlink of the ref
file fails, we print a message to stderr. This is usually a
good thing, but if the error is ENOENT, then it indicates
that the ref has _already_ been deleted. And since that's
our goal, it doesn't make sense to complain to the user.

This harmonizes the error reporting behavior for the
unpacked and packed cases; the packed case already printed
nothing on ENOENT, but the unpacked printed unconditionally.

Additionally, send-pack would, when deleting the tracking
ref corresponding to a remote delete, print "Failed to
delete" on any failure. This can be a misleading
message, since we actually _did_ delete at the remote side,
but we failed to delete locally. Rather than make the
message more precise, let's just eliminate it entirely; the
delete_ref routine already takes care of printing out a much
more specific message about what went wrong.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-08 13:05:11 -07:00
Junio C Hamano
b84c343c88 Merge branch 'db/clone-in-c'
* db/clone-in-c:
  Add test for cloning with "--reference" repo being a subset of source repo
  Add a test for another combination of --reference
  Test that --reference actually suppresses fetching referenced objects
  clone: fall back to copying if hardlinking fails
  builtin-clone.c: Need to closedir() in copy_or_link_directory()
  builtin-clone: fix initial checkout
  Build in clone
  Provide API access to init_db()
  Add a function to set a non-default work tree
  Allow for having for_each_ref() list extra refs
  Have a constant extern refspec for "--tags"
  Add a library function to add an alternate to the alternates file
  Add a lockfile function to append to a file
  Mark the list of refs to fetch as const

Conflicts:

	cache.h
	t/t5700-clone-reference.sh
2008-05-25 13:41:37 -07:00
Junio C Hamano
e2e2defc14 Merge branch 'lh/git-file'
* lh/git-file:
  Teach GIT-VERSION-GEN about the .git file
  Teach git-submodule.sh about the .git file
  Teach resolve_gitlink_ref() about the .git file
  Add platform-independent .git "symlink"
2008-05-05 19:16:16 -07:00
Daniel Barkalow
e142a3c61d Allow for having for_each_ref() list extra refs
These refs can be anything, but they are most likely useful as
pointing to objects that you know are in the object database but don't
have any regular refs for. For example, when cloning with --reference,
the refs in this repository should be listed as objects that we have,
even though we don't have refs in our newly-created repository for
them yet.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-04 17:41:44 -07:00
Heikki Orsila
0104ca09e3 Make read_in_full() and write_in_full() consistent with xread() and xwrite()
xread() and xwrite() return ssize_t values as their native POSIX
counterparts read(2) and write(2).

To be consistent, read_in_full() and write_in_full() should also return
ssize_t values.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-29 23:11:57 -07:00
Lars Hjemli
842abf06f3 Teach resolve_gitlink_ref() about the .git file
When .git in a submodule is a file, resolve_gitlink_ref() needs to pick up
the real GIT_DIR of the submodule from that file.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-09 01:22:50 -07:00
Junio C Hamano
f830d45b9f Merge commit '74359821' into js/reflog-delete
* commit '74359821': (128 commits)
  tests: introduce test_must_fail
  Fix builtin checkout crashing when given an invalid path
  templates/Makefile: don't depend on local umask setting
  Correct name of diff_flush() in API documentation
  Start preparing for 1.5.4.4
  format-patch: remove a leftover debugging message
  completion: support format-patch's --cover-letter option
  Eliminate confusing "won't bisect on seeked tree" failure
  builtin-reflog.c: don't install new reflog on write failure
  send-email: fix In-Reply-To regression
  git-svn: Don't prompt for client cert password everytime.
  git.el: Do not display empty directories.
  Fix 'git cvsexportcommit -w $cvsdir ...' when used with relative $GIT_DIR
  Add testcase for 'git cvsexportcommit -w $cvsdir ...' with relative $GIT_DIR
  Prompt to continue when editing during rebase --interactive
  Documentation/git svn log: add a note about timezones.
  git-p4: Support usage of perforce client spec
  git-p4: git-p4 submit cleanups.
  git-p4: Removed git-p4 submit --direct.
  git-p4: Clean up git-p4 submit's log message handling.
  ...
2008-03-03 01:20:19 -08:00
Shawn O. Pearce
0ae91be0e1 Optimize peel_ref for the current ref of a for_each_ref callback
Currently the only caller of peel_ref is show-ref, which is using
this function to show the peeled tag information if it is available
from an existing packed-refs file.  The call happens during the
for_each_ref callback function, so we have the proper struct ref_list
already on the call stack but it is not easily available to return
the peeled information to the caller.

We now save the current struct ref_list item before calling back
into the callback function so that future calls to peel_ref from
within the callback function can quickly access the current ref.
Doing so will save us an lstat() per ref processed as we no longer
have to check the filesystem to see if the ref exists as a loose
file or is packed.  This current ref caching also saves a linear
scan of the cached packed refs list.

As a micro-optimization we test the address of the passed ref name
against the current_ref->name before we go into the much more costly
strcmp().  Nearly any caller of peel_ref will be passing us the same
string do_for_each_ref passed them, which is current_ref->name.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-24 10:01:24 -08:00
Shawn O. Pearce
8c87dc77ae Protect peel_ref fallback case from NULL parse_object result
If the SHA-1 we are requesting the object for does not exist in
the object database we get a NULL back.  Accessing the type from
that is not likely to succeed on any system.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-24 00:52:55 -08:00
Brandon Casey
435fc8523f refs.c: make close_ref() and commit_ref() non-static
This is in preparation to the reflog-expire changes which will
allow updating the ref after expiring the reflog.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-22 22:57:38 -08:00
Brandon Casey
b531394d58 refs.c: rework ref_locks by abstracting from underlying struct lock_file
Instead of calling close_lock_file() and commit_lock_file() directly,
which take a struct lock_file argument, add two new functions:
close_ref() and commit_ref(), which handle calling the previous
lock_file functions and modifying the ref_lock structure.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-16 15:36:10 -08:00
Brandon Casey
4ed7cd3ab0 Improve use of lockfile API
Remove remaining double close(2)'s.  i.e. close() before
commit_locked_index() or commit_lock_file().

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-16 15:35:35 -08:00
Linus Torvalds
c3b0dec509 Be more careful about updating refs
This makes write_ref_sha1() more careful: it actually checks the SHA1 of
the ref it is updating, and refuses to update a ref with an object that it
cannot find.

Perhaps more importantly, it also refuses to update a branch head with a
non-commit object. I don't quite know *how* the stable series maintainers
were able to corrupt their repository to have a HEAD that pointed to a tag
rather than a commit object, but they did. Which results in a totally
broken repository that cannot be cloned or committed on.

So make it harder for people to shoot themselves in the foot like that.

The test t1400-update-ref.sh is fixed at the same time, as it
assumed that the commands involved in the particular test would
not care about corrupted repositories whose refs point at
nonexistant bogus objects.  That assumption does not hold true
anymore.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-16 11:53:35 -08:00
Junio C Hamano
257f3020f6 Update callers of check_ref_format()
This updates send-pack and fast-import to use symbolic constants
for checking the return values from check_ref_format(), and also
futureproof the logic in lock_any_ref_for_update() to explicitly
name the case that is usually considered an error but is Ok for
this particular use.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-02 11:20:09 -08:00
Junio C Hamano
5f7b202a7f lock_any_ref_for_update(): reject wildcard return from check_ref_format
Recent check_ref_format() returns -3 as well as -1 (general
error) and -2 (less than two levels).  The caller was explicitly
checking for -1, to allow "HEAD" but still needed to disallow
bogus refs.

This introduces symbolic constants for the return values from
check_ref_format() to make them read better and more
meaningful.  Normal ref creation codepath can still treat
non-zero return values as errors.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-02 02:28:54 -08:00
Junio C Hamano
774751a8bc Re-fix "builtin-commit: fix --signoff"
An earlier fix to the said commit was incomplete; it mixed up the
meaning of the flag parameter passed to the internal fmt_ident()
function, so this corrects it.

git_author_info() and git_committer_info() can be told to issue a
warning when no usable user information is found, and optionally can be
told to error out.  Operations that actually use the information to
record a new commit or a tag will still error out, but the caller to
leave reflog record will just silently use bogus user information.

Not warning on misconfigured user information while writing a reflog
entry is somewhat debatable, but it is probably nicer to the users to
silently let it pass, because the only information you are losing is who
checked out the branch.

 * git_author_info() and git_committer_info() used to take 1 (positive
   int) to error out with a warning on misconfiguration; this is now
   signalled with a symbolic constant IDENT_ERROR_ON_NO_NAME.

 * These functions used to take -1 (negative int) to warn but continue;
   this is now signalled with a symbolic constant IDENT_WARN_ON_NO_NAME.

 * fmt_ident() function implements the above error reporting behaviour
   common to git_author_info() and git_committer_info().  A symbolic
   constant IDENT_NO_DATE can be or'ed in to the flag parameter to make
   it return only the "Name <email@address.xz>".

 * fmt_name() is a thin wrapper around fmt_ident() that always passes
   IDENT_ERROR_ON_NO_NAME and IDENT_NO_DATE.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-09 00:55:55 -08:00
Junio C Hamano
9bbe6db85f Merge branch 'sp/refspec-match'
* sp/refspec-match:
  refactor fetch's ref matching to use refname_match()
  push: use same rules as git-rev-parse to resolve refspecs
  add refname_match()
  push: support pushing HEAD to real branch name
2007-12-04 17:07:10 -08:00
Junio C Hamano
fd200790dc Merge branch 'jk/send-pack'
* jk/send-pack: (24 commits)
  send-pack: cluster ref status reporting
  send-pack: fix "everything up-to-date" message
  send-pack: tighten remote error reporting
  make "find_ref_by_name" a public function
  Fix warning about bitfield in struct ref
  send-pack: assign remote errors to each ref
  send-pack: check ref->status before updating tracking refs
  send-pack: track errors for each ref
  git-push: add documentation for the newly added --mirror mode
  Add tests for git push'es mirror mode
  Update the tracking references only if they were succesfully updated on remote
  Add a test checking if send-pack updated local tracking branches correctly
  git-push: plumb in --mirror mode
  Teach send-pack a mirror mode
  send-pack: segfault fix on forced push
  Reteach builtin-ls-remote to understand remotes
  send-pack: require --verbose to show update of tracking refs
  receive-pack: don't mention successful updates
  more terse push output
  Build in ls-remote
  ...
2007-11-24 16:45:37 -08:00
Steffen Prohaska
605b4978a1 refactor fetch's ref matching to use refname_match()
The old rules used by fetch were coded as a series of ifs.  The old
rules are:
1) match full refname if it starts with "refs/" or matches "HEAD"
2) verify that full refname starts with "refs/"
3) match abbreviated name in "refs/" if it starts with "heads/",
    "tags/", or "remotes/".
4) match abbreviated name in "refs/heads/"

This is replaced by the new rules
a) match full refname
b) match abbreviated name prefixed with "refs/"
c) match abbreviated name prefixed with "refs/heads/"

The details of the new rules are different from the old rules.  We no
longer verify that the full refname starts with "refs/".  The new rule
(a) matches any full string.  The old rules (1) and (2) were stricter.
Now, the caller is responsible for using sensible full refnames.  This
should be the case for the current code.  The new rule (b) is less
strict than old rule (3).  The new rule accepts abbreviated names that
start with a non-standard prefix below "refs/".

Despite this modifications the new rules should handle all cases as
expected.  Two tests are added to verify that fetch does not resolve
short tags or HEAD in remotes.

We may even think about loosening the rules a bit more and unify them
with the rev-parse rules.  This would be done by replacing
ref_ref_fetch_rules with ref_ref_parse_rules.  Note, the two new test
would break.

Signed-off-by: Steffen Prohaska <prohaska@zib.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-18 18:39:01 -08:00
Steffen Prohaska
79803322c1 add refname_match()
We use at least two rulesets for matching abbreviated refnames with
full refnames (starting with 'refs/').  git-rev-parse and git-fetch
use slightly different rules.

This commit introduces a new function refname_match
(const char *abbrev_name, const char *full_name, const char **rules).

abbrev_name is expanded using the rules and matched against full_name.
If a match is found the function returns true.  rules is a NULL-terminate
list of format patterns with "%.*s", for example:

    const char *ref_rev_parse_rules[] = {
               "%.*s",
               "refs/%.*s",
               "refs/tags/%.*s",
               "refs/heads/%.*s",
               "refs/remotes/%.*s",
               "refs/remotes/%.*s/HEAD",
               NULL
    };

Asterisks are included in the format strings because this is the form
required in sha1_name.c.  Sharing the list with the functions there is
a good idea to avoid duplicating the rules.  Hopefully this
facilitates unified matching rules in the future.

This commit makes the rules used by rev-parse for resolving refs to
sha1s available for string comparison.  Before this change, the rules
were buried in get_sha1*() and dwim_ref().

A follow-up commit will refactor the rules used by fetch.

refname_match() will be used for matching refspecs in git-send-pack.

Thanks to Daniel Barkalow <barkalow@iabervon.org> for pointing
out that ref_matches_abbrev in remote.c solves a similar problem
and care should be taken to avoid confusion.

Signed-off-by: Steffen Prohaska <prohaska@zib.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-18 18:39:00 -08:00
Jeff King
cda69f481d make "find_ref_by_name" a public function
This was a static in remote.c, but is generally useful.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-18 02:34:34 -08:00
Johannes Sixt
549799b4a1 refs.c: Remove unused get_ref_sha1()
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-15 21:16:51 -08:00
Shawn O. Pearce
2e13e5d892 Merge branch 'master' into db/fetch-pack
There's a number of tricky conflicts between master and
this topic right now due to the rewrite of builtin-push.
Junio must have handled these via rerere; I'd rather not
deal with them again so I'm pre-merging master into the
topic.  Besides this topic somehow started to depend on
the strbuf series that was in next, but is now in master.
It no longer compiles on its own without the strbuf API.

* master: (184 commits)
  Whip post 1.5.3.4 maintenance series into shape.
  Minor usage update in setgitperms.perl
  manual: use 'URL' instead of 'url'.
  manual: add some markup.
  manual: Fix example finding commits referencing given content.
  Fix wording in push definition.
  Fix some typos, punctuation, missing words, minor markup.
  manual: Fix or remove em dashes.
  Add a --dry-run option to git-push.
  Add a --dry-run option to git-send-pack.
  Fix in-place editing functions in convert.c
  instaweb: support for Ruby's WEBrick server
  instaweb: allow for use of auto-generated scripts
  Add 'git-p4 commit' as an alias for 'git-p4 submit'
  hg-to-git speedup through selectable repack intervals
  git-svn: respect Subversion's [auth] section configuration values
  gtksourceview2 support for gitview
  fix contrib/hooks/post-receive-email hooks.recipients error message
  Support cvs via git-shell
  rebase -i: use diff plumbing instead of porcelain
  ...

Conflicts:

	Makefile
	builtin-push.c
	rsh.c
2007-10-16 00:15:25 -04:00
Johannes Schindelin
7155b727c9 Introduce remove_dir_recursively()
There was a function called remove_empty_dir_recursive() buried
in refs.c.  Expose a slightly enhanced version in dir.h: it can now
optionally remove a non-empty directory.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-30 00:04:39 -07:00
Pierre Habouzit
182af8343c Use xmemdupz() in many places.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-18 17:42:17 -07:00