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2008-05-04Allow for having for_each_ref() list extra refsLibravatar Daniel Barkalow1-0/+9
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>
2008-02-22refs.c: make close_ref() and commit_ref() non-staticLibravatar Brandon Casey1-0/+6
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>
2008-01-02lock_any_ref_for_update(): reject wildcard return from check_ref_formatLibravatar Junio C Hamano1-1/+4
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>
2007-11-15refs.c: Remove unused get_ref_sha1()Libravatar Johannes Sixt1-3/+0
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-05Function for updating refs.Libravatar Carlos Rica1-0/+6
A function intended to be called from builtins updating refs by locking them before write, specially those that came from scripts using "git update-ref". [jc: with minor fixups] Signed-off-by: Carlos Rica <jasampler@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-05-10git-update-ref: add --no-deref option for overwriting/detaching refLibravatar Sven Verdoolaege1-1/+2
git-checkout is also adapted to make use of this new option instead of the handcrafted command sequence. Signed-off-by: Sven Verdoolaege <skimo@kotnet.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-04-10Add 'resolve_gitlink_ref()' helper functionLibravatar Linus Torvalds1-0/+3
This new function resolves a ref in *another* git repository. It's named for its intended use: to look up the git link to a subproject. It's not actually wired up to anything yet, but we're getting closer to having fundamental plumbing support for "links" from one git directory to another, which is the basis of subproject support. [jc: amended a FILE* leak] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-03scan reflogs independently from refsLibravatar Nicolas Pitre1-0/+6
Currently, the search for all reflogs depends on the existence of corresponding refs under the .git/refs/ directory. Let's scan the .git/logs/ directory directly instead. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-28lock_ref_sha1_basic(): remember the original name of a ref when resolving itLibravatar Nicolas Pitre1-0/+1
A ref might be pointing to another ref but only the name of the last ref is remembered. Let's remember about the first name as well. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-28make reflog filename independent from struct ref_lockLibravatar Nicolas Pitre1-1/+0
This allows for ref_log_write() to be used in a more flexible way, and is needed for future changes. This is only code reorg with no behavior change. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-19Extend read_ref_at() to be usable from places other than sha1_name.Libravatar Junio C Hamano1-1/+1
You can pass an extra argument to the function to receive the reflog message information. Also when the log does not go back beyond the point the user asked, the cut-off time and count are given back to the caller for emitting the error messages as appropriately. We could later add configuration for get_sha1_basic() to make it an error instead of it being just a warning. Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-09Sanitize for_each_reflog_ent()Libravatar Johannes Schindelin1-2/+2
It used to ignore the return value of the helper function; now, it expects it to return 0, and stops iteration upon non-zero return values; this value is then passed on as the return value of for_each_reflog_ent(). Further, it makes no sense to force the parsing upon the helper functions; for_each_reflog_ent() now calls the helper function with old and new sha1, the email, the timestamp & timezone, and the message. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-20add for_each_reflog_ent() iteratorLibravatar Junio C Hamano1-0/+4
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-05git-branch: let caller specify logmsgLibravatar Lars Hjemli1-1/+1
This changes the signature of rename_ref() in refs.[hc] to include a logmessage for the reflogs. Also, builtin-branch.c is modified to provide a proper logmessage + call setup_ident() before any logmessages are written. Signed-off-by: Lars Hjemli <hjemli@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-05git-branch: add options and tests for branch renamingLibravatar Lars Hjemli1-0/+3
Extend git-branch with the following options: git-branch -m|-M [<oldbranch>] newbranch The -M variation is required to force renaming over an exsisting branchname. This also indroduces $GIT_DIR/RENAME_REF which is a "metabranch" used when renaming branches. It will always hold the original sha1 for the latest renamed branch. Additionally, if $GIT_DIR/logs/RENAME_REF exists, all branch rename events are logged there. Finally, some testcases are added to verify the new options. Signed-off-by: Lars Hjemli <hjemli@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-11-21Store peeled refs in packed-refs (take 2).Libravatar Junio C Hamano1-4/+3
This fixes the previous implementation which failed to optimize repositories with tons of lightweight tags. The updated packed-refs format begins with "# packed-refs with:" line that lists the kind of extended data the file records. Currently, there is only one such extension defined, "peeled". This stores the "peeled tag" on a line that immediately follows a line for a tag object itself in the format "^<sha-1>". The header line itself and any extended data are ignored by older implementation, so packed-refs file generated with this version can still be used by older git. packed-refs made by older git can of course be used with this version. Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-11-19Store peeled refs in packed-refs file.Libravatar Junio C Hamano1-0/+4
This would speed up "show-ref -d" in a repository with mostly packed tags. Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-10-05ref-log: allow ref@{count} syntax.Libravatar Junio C Hamano1-1/+1
Often I find myself wanting to say 'tip of "next" before I merged the last three topics'. Now I can say that with: git log next@{3}..next Since small integers alone are invalid input strings to approxidate, there is no fear of confusion. Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-27Clean-up lock-ref implementationLibravatar Junio C Hamano1-2/+2
This drops "mustexist" parameter lock_ref_sha1() and lock_any_ref_forupdate() functions take. Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-20Tell between packed, unpacked and symbolic refs.Libravatar Junio C Hamano1-1/+3
This adds a "int *flag" parameter to resolve_ref() and makes for_each_ref() family to call callback function with an extra "int flag" parameter. They are used to give two bits of information (REF_ISSYMREF and REF_ISPACKED) about the ref. Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-20Add callback data to for_each_ref() family.Libravatar Junio C Hamano1-5/+6
This is a long overdue fix to the API for for_each_ref() family of functions. It allows the callers to specify a callback data pointer, so that the caller does not have to use static variables to communicate with the callback funciton. The updated for_each_ref() family takes a function of type int (*fn)(const char *, const unsigned char *, void *) and a void pointer as parameters, and calls the function with the name of the ref and its SHA-1 with the caller-supplied void pointer as parameters. The commit updates two callers, builtin-name-rev.c and builtin-pack-refs.c as an example. Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-17Enable the packed refs file formatLibravatar Linus Torvalds1-1/+1
This actually "turns on" the packed ref file format, now that the infrastructure to do so sanely exists (ie notably the change to make the reference reading logic take refnames rather than pathnames to the loose objects that no longer necessarily even exist). In particular, when the ref lookup hits a refname that has no loose file associated with it, it falls back on the packed-ref information. Also, the ref-locking code, while still using a loose file for the locking itself (and _creating_ a loose file for the new ref) no longer requires that the old ref be in such an unpacked state. Finally, this does a minimal hack to git-checkout.sh to rather than check the ref-file directly, do a "git-rev-parse" on the "heads/$refname". That's not really wonderful - we should rather really have a special routine to verify the names as proper branch head names, but it is a workable solution for now. With this, I can literally do something like git pack-refs find .git/refs -type f -print0 | xargs -0 rm -f -- and the end result is a largely working repository (ie I've done two commits - which creates _one_ unpacked ref file - done things like run "gitk" and "git log" etc, and it all looks ok). There are probably things missing, but I'm hoping that the missing things are now of the "small and obvious" kind, and that somebody else might want to start looking at this too. Hint hint ;) Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-06ref-log: style fixes.Libravatar Junio C Hamano1-3/+3
A few style fixes to get the code in line with the rest. - asterisk to make a type a pointer to something goes in front of the variable, not at the end of the base type. E.g. a pointer to an integer is "int *ip", not "int* ip". - open parenthesis for function parameter list, unlike syntactic constructs, comes immediately after the function name. E.g. "if (foo) bar();" not "if(foo) bar ();". - "else" does not come on the same line as the closing brace of corresponding "if". The style is mostly a matter of personal taste, and people may disagree, but consistency is important. Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-06refs.c: convert it to use lockfile interface.Libravatar Junio C Hamano1-1/+1
This updates the ref locking code to use creat-rename locking code we use for the index file, so that it can borrow the code to clean things up upon signals and program termination. Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-19Force writing ref if it doesn't exist.Libravatar Shawn Pearce1-0/+1
Normally we try to skip writing a ref if its value hasn't changed but in the special case that the ref doesn't exist but the new value is going to be 0{40} then force writing the ref anyway. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17Support 'master@2 hours ago' syntaxLibravatar Shawn Pearce1-0/+3
Extended sha1 expressions may now include date specifications which indicate a point in time within the local repository's history. If the ref indicated to the left of '@' has a log in $GIT_DIR/logs/<ref> then the value of the ref at the time indicated by the specification is obtained from the ref's log. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17Log ref updates to logs/refs/<ref>Libravatar Shawn Pearce1-0/+1
If config parameter core.logAllRefUpdates is true or the log file already exists then append a line to ".git/logs/refs/<ref>" whenever git-update-ref <ref> is executed. Each log line contains the following information: oldsha1 <SP> newsha1 <SP> committer <LF> where committer is the current user, date, time and timezone in the standard GIT ident format. If the caller is unable to append to the log file then git-update-ref will fail without updating <ref>. An optional message may be included in the log line with the -m flag. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17Improve abstraction of ref lock/write.Libravatar Shawn Pearce1-8/+16
Created 'struct ref_lock' to contain the data necessary to perform a ref update. This change improves writing a ref as the file names are generated only once (rather than twice) and supports following symrefs (up to the maximum depth). Further the ref_lock structure provides room to extend the update API with ref logging. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-14Add "--branches", "--tags" and "--remotes" options to git-rev-parse.Libravatar Sean1-0/+3
"git branch" uses "rev-parse --all" and becomes much too slow when there are many tags (it scans all refs). Use the new "--branches" option of rev-parse to speed things up. Signed-off-by: Sean Estabrooks <seanlkml@sympatico.ca> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-05Add "git_path()" and "head_ref()" helper functions.Libravatar Linus Torvalds1-0/+1
"git_path()" returns a static pathname pointer into the git directory using a printf-like format specifier. "head_ref()" works like "for_each_ref()", except for just the HEAD.
2005-07-03Fix up "for_each_ref()" to be more usable, and use it in git-fsck-cacheLibravatar Linus Torvalds1-1/+1
It needed to take the GIT_DIR information into account, something that the original receive-pack usage just never cared about.
2005-07-02Generalize the "show each ref" code in receice-packLibravatar Linus Torvalds1-0/+6
This turns it into a generic "do xyz for each ref" library function.
2005-06-06[PATCH] Operations on refsLibravatar Daniel Barkalow1-0/+21
This patch adds code to read a hash out of a specified file under {GIT_DIR}/refs/, and to write such files atomically and optionally with an compare and lock. Signed-off-by: Daniel Barkalow <barkalow@iabervon.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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