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2010-03-12notes: rework subcommands and parse optionsLibravatar Stephen Boyd2-166/+394
Running 'git notes copy -h' is not very helfpul right now. It lists the options for all the git notes subcommands and is rather confusing. Fix this by splitting cmd_notes() into separate functions for each subcommand (besides append and edit since they're very similar) and only providing a usage message for the subcommand. This has an added benefit of reducing the code complexity while making it safer and easier to read. The downside is we get some code bloat from similar setup and teardown needed for notes and options parsing. We also get a bit stricter in options parsing by only allowing the ref option to come before the subcommand. Acked-by: Johan Herland <johan@herland.net> Cc: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Stephen Boyd <bebarino@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-12git-notes(1): add a section about the meaning of historyLibravatar Thomas Rast1-0/+14
To the displaying code, the only interesting thing about a notes ref is that it has a tree of the required format. However, notes actually have a history since they are recorded as successive commits. Make a note about the existence of this history in the manpage, but keep some doors open if we want to change the details. 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>
2010-03-12notes: track whether notes_trees were changed at allLibravatar Thomas Rast3-0/+6
Currently, the notes copying is a bit wasteful since it always creates new trees, even if no notes were copied at all. Teach add_note() and remove_note() to flag the affected notes tree as changed ('dirty'). Then teach builtin/notes.c to use this knowledge and avoid committing trees that weren't changed. 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>
2010-03-12notes: add shorthand --ref to override GIT_NOTES_REFLibravatar Thomas Rast2-0/+21
Adds a shorthand option that overrides the GIT_NOTES_REF variable, and hence determines the notes tree that will be manipulated. It also DWIMs a refs/notes/ prefix. 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>
2010-03-12commit --amend: copy notes to the new commitLibravatar Thomas Rast2-0/+18
Teaches 'git commit --amend' to copy notes. The catch is that this must also be guarded by --no-post-rewrite, which we use to prevent --amend from copying notes during a rebase -i 'edit'/'reword'. Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-12rebase: support automatic notes copyingLibravatar Thomas Rast5-1/+50
Luckily, all the support already happens to be there. Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-12notes: implement helpers needed for note copying during rewriteLibravatar Thomas Rast8-8/+385
Implement helper functions to load the rewriting config, and to actually copy the notes. Also document the config. Secondly, also implement an undocumented --for-rewrite=<cmd> option to 'git notes copy' which is used like --stdin, but also puts the configuration for <cmd> into effect. It will be needed to support the copying in git-rebase. 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>
2010-03-12notes: implement 'git notes copy --stdin'Libravatar Thomas Rast5-2/+127
This implements a mass-copy command that takes a sequence of lines in the format <from-sha1> SP <to-sha1> [ SP <rest> ] LF on stdin, and copies each <from-sha1>'s notes to the <to-sha1>. The <rest> is ignored. The intent, of course, is that this can read the same input that the 'post-rewrite' hook gets. The copy_note() function is exposed for everyone's and in particular the next commit's use. 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>
2010-03-12rebase -i: invoke post-rewrite hookLibravatar Thomas Rast2-1/+146
Aside from the same issue that rebase also has (remembering the original commit across a conflict resolution), rebase -i brings an extra twist: We need to defer writing the rewritten list in the case of {squash,fixup} because their rewritten result should be the last commit in the squashed group. Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-12rebase: invoke post-rewrite hookLibravatar Thomas Rast3-0/+45
We have to deal with two separate code paths: a normal rebase, which actually goes through git-am; and rebase {-m|-s}. The only small issue with both is that they need to remember the original sha1 across a possible conflict resolution. rebase -m already puts this information in $dotest/current, and we just introduce a similar file for git-am. Note that in git-am, the hook really only runs when coming from git-rebase: the code path that sets the $dotest/original-commit file is guarded by a test for $dotest/rebasing. Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-12commit --amend: invoke post-rewrite hookLibravatar Thomas Rast3-1/+92
The rough structure of run_rewrite_hook() comes from run_receive_hook() in receive-pack. We introduce a --no-post-rewrite option and use it to avoid the hook when called from git-rebase -i 'edit'. The next patch will add full support in git-rebase, and we only want to invoke the hook once. Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-12Documentation: document post-rewrite hookLibravatar Thomas Rast1-0/+34
This defines the behaviour of the post-rewrite hook support, which will be implemented in the following patches. We deliberately do not document how often the hook will be invoked per rewriting command, but the interface is designed to keep that at "once". This would currently not matter too much, since both rebase and filter-branch are shellscripts and spawn many processes anyway. However, when a fast sequencer in C is implemented, it will be beneficial to only have to run the hook once. Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-12Support showing notes from more than one notes treeLibravatar Thomas Rast14-30/+437
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>
2010-03-12test-lib: unset GIT_NOTES_REF to stop it from influencing testsLibravatar Thomas Rast1-0/+1
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>
2010-02-23Merge branch 'il/rev-glob'Libravatar Junio C Hamano9-19/+357
2010-02-13builtin-notes: Add "copy" subcommand for copying notes between objectsLibravatar Johan Herland3-8/+102
This is useful for keeping notes to objects that are being rewritten by e.g. 'git commit --amend', 'git rebase', or 'git cherry-pick'. "git notes copy <from> <to>" is in practice equivalent to "git notes add -C $(git notes list <from>) <to>", although it is somewhat more convenient for regular users. "git notes copy" takes the same -f option as "git add", to overwrite existing notes at the target (instead of aborting with an error message). If the <from>-object has no notes, "git notes copy" will abort with an error message. The patch includes tests verifying correct behaviour of the new subcommand. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13builtin-notes: Misc. refactoring of argc and exit value handlingLibravatar Johan Herland1-25/+36
This is in preparation of future patches that add additional subcommands. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13builtin-notes: Add -c/-C options for reusing notesLibravatar Johan Herland3-12/+179
Inspired by the -c/-C options to "git commit", we teach these options to "git notes add/append" to allow reuse of note objects. With this patch in place, it is now easy to copy or move notes between objects. For example, to copy object A's notes to object B: git notes add [-f] -C $(git notes list A) B To move instead of copying, you simply remove the notes from the source object afterwards, e.g.: git notes remove A The patch includes tests verifying correct behaviour of the new functionality. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13builtin-notes: Refactor handling of -F option to allow combining -m and -FLibravatar Johan Herland2-44/+73
By moving the -F option handling into a separate function (parse_file_arg), we can start allowing several -F options, and mixed usage of -m and -F options. Each -m/-F given appends to the note message, in the order they are given on the command-line. The patch includes tests verifying correct behaviour of the new functionality. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13builtin-notes: Deprecate the -m/-F options for "git notes edit"Libravatar Johan Herland5-8/+14
The semantics for "git notes edit -m/-F" overlap with those for "git notes add -f", and the behaviour (i.e. overwriting existing notes with the given message/file) is more intuitively captured by (and better documented with) "git notes add -f". Suggested-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13builtin-notes: Add "append" subcommand for appending to note objectsLibravatar Johan Herland3-9/+67
"git notes append" is equivalent to "git notes edit" except that instead of editing existing notes contents, you can only append to it. This is useful for quickly adding annotations like e.g.: git notes append -m "Acked-by: A U Thor <author@example.com>" "git notes append" takes the same -m/-F options as "git notes add". If there is no existing note to append to, "git notes append" is identical to "git notes add" (i.e. it adds a new note). The patch includes tests verifying correct behaviour of the new subcommand. Suggested-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13builtin-notes: Add "add" subcommand for adding notes to objectsLibravatar Johan Herland3-22/+74
"git notes add" is identical to "git notes edit" except that instead of editing existing notes for a given object, you can only add notes to an object that currently has none. If "git notes add" finds existing notes for the given object, the addition is aborted. However, if the new -f/--force option is used, "git notes add" will _overwrite_ the existing notes with the new notes contents. If there is no existing notes for the given object. "git notes add" is identical to "git notes edit" (i.e. it adds a new note). The patch includes tests verifying correct behaviour of the new subcommand. Suggested-by: Joey Hess <joey@kitenet.net> Improved-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13builtin-notes: Add --message/--file aliases for -m/-F optionsLibravatar Johan Herland2-2/+4
Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13builtin-notes: Add "list" subcommand for listing note objectsLibravatar Johan Herland3-6/+76
"git notes list" will list all note objects in the current notes ref (in the format "<note object> <annotated object>"). "git notes list <object>" will list the note object associated with the given <object>, or fail loudly if the given <object> has no associated notes. If no arguments are given to "git notes", it defaults to the "list" subcommand. This is for pseudo-compatibility with "git tag" and "git branch". The patch includes tests verifying correct behaviour of the new subcommand. Suggested-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Documentation: Generalize git-notes docs to 'objects' instead of 'commits'Libravatar Johan Herland1-15/+20
Notes can annotate arbitrary objects (not only commits), but this is not reflected in the current documentation. This patch rewrites the git-notes documentation to talk about 'objects' instead of 'commits'. However, the discussion on commit notes and how they are displayed by 'git log' is largely preserved. Finally, I add myself to the Author/Documentation credits, since most of the lines in the git-notes code and docs are blamed on me. Cc: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13builtin-notes: Add "prune" subcommand for removing notes for missing objectsLibravatar Johan Herland3-11/+115
"git notes prune" will remove all notes that annotate unreachable/non- existing objects. The patch includes tests verifying correct behaviour of the new subcommand. Suggested-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Notes API: prune_notes(): Prune notes that belong to non-existing objectsLibravatar Johan Herland2-0/+51
When an object is made unreachable by Git, any notes that annotate that object are not automagically made unreachable, since all notes are always trivially reachable from a notes ref. In order to remove notes for non-existing objects, we therefore need to add functionality for traversing the notes tree and explicitly removing references to notes that annotate non-reachable objects. Thus the notes objects themselves also become unreachable, and are removed by a later garbage collect. prune_notes() performs this traversal (by using for_each_note() internally), and removes the notes in question from the notes tree. Note that the effect of prune_notes() is not persistent unless a subsequent call to write_notes_tree() is made. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13t3305: Verify that removing notes triggers automatic fanout consolidationLibravatar Johan Herland1-1/+46
Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13builtin-notes: Add "remove" subcommand for removing existing notesLibravatar Johan Herland3-34/+73
Using "git notes remove" is equivalent to specifying an empty note message. The patch includes tests verifying correct behaviour of the new subcommand. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Teach builtin-notes to remove empty notesLibravatar Johan Herland2-4/+42
When the result of editing a note is an empty string, the associated note entry should be deleted from the notes tree. This allows deleting notes by invoking either "git notes -m ''" or "git notes -F /dev/null". Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Teach notes code to properly preserve non-notes in the notes treeLibravatar Johan Herland4-51/+233
The note tree structure allows for non-note entries to coexist with note entries in a notes tree. Although we certainly expect there to be very few non-notes in a notes tree, we should still support them to a certain degree. This patch teaches the notes code to preserve non-notes when updating the notes tree with write_notes_tree(). Non-notes are not affected by fanout restructuring. For non-notes to be handled correctly, we can no longer allow subtree entries that do not match the fanout structure produced by the notes code itself. This means that fanouts like 4/36, 6/34, 8/32, 4/4/32, etc. are no longer recognized as note subtrees; only 2-based fanouts are allowed (2/38, 2/2/36, 2/2/2/34, etc.). Since the notes code has never at any point _produced_ non-2-based fanouts, it is highly unlikely that this change will cause problems for anyone. The patch also adds some tests verifying the correct handling of non-notes in a notes tree. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13t3305: Verify that adding many notes with git-notes triggers increased fanoutLibravatar Johan Herland1-0/+50
Add a test verifying that the notes code automatically restructures the notes tree into a deeper fanout level, when many notes are added with "git notes". Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13t3301: Verify successful annotation of non-commitsLibravatar Johan Herland1-0/+17
Adds a testcase verifying that git-notes works successfully on tree, blob, and tag objects. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Builtin-ify git-notesLibravatar Johan Herland7-40/+350
The builtin-ification includes some minor behavioural changes to the command-line interface: It is no longer allowed to mix the -m and -F arguments, and it is not allowed to use multiple -F options. As part of the builtin-ification, we add the commit_notes() function to the builtin API. This function (together with the notes.h API) can be easily used from other builtins to manipulate the notes tree. Also includes needed changes to t3301. This patch has been improved by the following contributions: - Stephen Boyd: Use die() instead of fprintf(stderr, ...) followed by exit(1) Cc: Stephen Boyd <bebarino@gmail.com> Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Refactor notes concatenation into a flexible interface for combining notesLibravatar Johan Herland2-60/+112
When adding a note to an object that already has an existing note, the current solution is to concatenate the contents of the two notes. However, the caller may instead wish to _overwrite_ the existing note with the new note, or maybe even _ignore_ the new note, and keep the existing one. There might also be other ways of combining notes that are only known to the caller. Therefore, instead of unconditionally concatenating notes, we let the caller specify how to combine notes, by passing in a pointer to a function for combining notes. The caller may choose to implement its own function for notes combining, but normally one of the following three conveniently supplied notes combination functions will be sufficient: - combine_notes_concatenate() combines the two notes by appending the contents of the new note to the contents of the existing note. - combine_notes_overwrite() replaces the existing note with the new note. - combine_notes_ignore() keeps the existing note, and ignores the new note. A combine_notes function can be passed to init_notes() to choose a default combine_notes function for that notes tree. If NULL is given, the notes tree falls back to combine_notes_concatenate() as the ultimate default. A combine_notes function can also be passed directly to add_note(), to control the notes combining behaviour for a note addition in particular. If NULL is passed, the combine_notes function registered for the given notes tree is used. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Notes API: Allow multiple concurrent notes trees with new struct notes_treeLibravatar Johan Herland3-66/+112
The new struct notes_tree encapsulates access to a specific notes tree. It is provided to allow callers to make use of several different notes trees simultaneously. A struct notes_tree * parameter is added to every function in the notes API. In all cases, NULL can be passed, in which case the fallback "default" notes tree (default_notes_tree) is used. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Notes API: write_notes_tree(): Store the notes tree in the databaseLibravatar Johan Herland2-3/+180
Uses for_each_note() to traverse the notes tree, and produces tree objects on the fly representing the "on-disk" version of the notes tree with appropriate fanout. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Notes API: for_each_note(): Traverse the entire notes tree with a callbackLibravatar Johan Herland2-0/+180
This includes a first attempt at creating an optimal fanout scheme (which is calculated on-the-fly, while traversing). Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Notes API: get_note(): Return the note annotating the given objectLibravatar Johan Herland2-7/+15
Created by a simple cleanup and rename of lookup_notes(). Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Notes API: remove_note(): Remove note objects from the notes tree structureLibravatar Johan Herland2-1/+87
This includes adding internal functions for maintaining a healthy notes tree structure after removing individual notes. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Notes API: add_note(): Add note objects to the internal notes tree structureLibravatar Johan Herland2-0/+15
Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Notes API: init_notes(): Initialize the notes tree from the given notes refLibravatar Johan Herland2-12/+38
Created by a simple refactoring of initialize_notes(). Also add a new 'flags' parameter, which is a bitwise combination of notes initialization flags. For now, there is only one flag - NOTES_INIT_EMPTY - which indicates that the notes tree should not auto-load the contents of the given (or default) notes ref, but rather should leave the notes tree initialized to an empty state. This will become useful in the future when manipulating the notes tree through the notes API. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Add tests for checking correct handling of $GIT_NOTES_REF and core.notesRefLibravatar Johan Herland1-0/+48
Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Notes API: get_commit_notes() -> format_note() + remove the commit restrictionLibravatar Johan Herland3-22/+30
There is really no reason why only commit objects can be annotated. By changing the struct commit parameter to get_commit_notes() into a sha1 we gain the ability to annotate any object type. To reflect this in the function naming as well, we rename get_commit_notes() to format_note(). This patch also fixes comments and variable names throughout notes.c as a consequence of the removal of the unnecessary 'commit' restriction. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13Minor cosmetic fixes to notes.cLibravatar Johan Herland1-5/+4
Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-22Merge branch 'jc/maint-limit-note-output'Libravatar Junio C Hamano8-1/+85
* jc/maint-limit-note-output: Fix "log --oneline" not to show notes Fix "log" family not to be too agressive about showing notes
2010-01-22Merge branch 'nd/ls-files-sparse-fix'Libravatar Junio C Hamano1-3/+13
* nd/ls-files-sparse-fix: Fix memory corruption when .gitignore does not end by \n
2010-01-22Make difftool.prompt fall back to mergetool.promptLibravatar Sebastian Schuberth1-1/+2
The documentation states that "git-difftool falls back to git-mergetool config variables when the difftool equivalents have not been defined". Until now, this was not the case for "difftool.prompt". Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com> Acked-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-22engine.pl: Fix a recent breakage of the buildsystem generatorLibravatar Ramsay Jones1-3/+5
Commit ade2ca0c (Do not try to remove directories when removing old links, 2009-10-27) added an expression to a 'test' using an '-o' or connective. This resulted in the buildsystem generator mistaking a conditional 'rm' for a linker command. In order to fix the breakage, we filter out all 'test' commands before then attempting to identify the commands of interest. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Acked-by: Sebastian Schuberth <sschuberth@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-22git-mv: fix moving more than one source to a single destinationLibravatar Junio C Hamano2-4/+19
The code used as if return value from basename(3) were stable, but often the function is implemented to return a pointer to a static storage internal to it. Because basename(3) is also allowed to modify its input parameter in place, casting constness away from the strings we obtained from the caller and giving them to basename is a no-no. Reported, and initial fix and test supplied by David Rydh. Signed-off-by: Junio C Hamano <gitster@pobox.com>