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2015-09-08Merge branch 'jc/builtin-am-signoff-regression-fix'Libravatar Junio C Hamano1-0/+48
Recent "git am" had regression when adding a Signed-off-by line with its "-s" option by an unintended tightening of how an existing trailer block is detected. * jc/builtin-am-signoff-regression-fix: am: match --signoff to the original scripted version
2015-09-06am: match --signoff to the original scripted versionLibravatar Junio C Hamano1-0/+48
Linus noticed that the recently reimplemented "git am -s" defines the trailer block too rigidly, resulting in an unnecessary blank line between the existing sign-offs and his new sign-off. An e-mail submission sent to Linus in real life ends with mixture of sign-offs and commentaries, e.g. title here message here Signed-off-by: Original Author <original@auth.or> [rv: tweaked frotz and nitfol] Signed-off-by: Re Viewer <rv@ew.er> Signed-off-by: Other Reviewer <other@rev.ewer> --- patch here Because the reimplementation reused append_signoff() helper that is used by other codepaths, which is unaware that people intermix such comments with their sign-offs in the trailer block, such a message was judged to end with a non-trailer, resulting in an extra blank line before adding a new sign-off. The original scripted version of "git am" used a lot looser definition, i.e. "if and only if there is no line that begins with Signed-off-by:, add a blank line before adding a new sign-off". For the upcoming release, stop using the append_signoff() in "git am" and reimplement the looser definition used by the scripted version to use only in "git am" to fix this regression in "am" while avoiding new regressions to other users of append_signoff(). In the longer term, we should look into loosening append_signoff() so that other codepaths that add a new sign-off behave the same way as "git am -s", but that is a task for post-release. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-03Merge branch 'jk/am-rerere-lock-fix'Libravatar Junio C Hamano1-0/+36
Recent "git am" introduced a double-locking failure when used with the "--3way" option that invokes rerere machinery. * jk/am-rerere-lock-fix: rerere: release lockfile in non-writing functions
2015-09-02Merge branch 'cc/trailers-corner-case-fix'Libravatar Junio C Hamano1-0/+14
The "interpret-trailers" helper mistook a multi-paragraph title of a commit log message with a colon in it as the end of the trailer block. * cc/trailers-corner-case-fix: trailer: support multiline title
2015-09-02Merge branch 'ee/clean-test-fixes'Libravatar Junio C Hamano1-12/+4
* ee/clean-test-fixes: t7300: fix broken && chains
2015-09-02Merge branch 'jk/log-missing-default-HEAD'Libravatar Junio C Hamano1-0/+14
"git init empty && git -C empty log" said "bad default revision 'HEAD'", which was found to be a bit confusing to new users. * jk/log-missing-default-HEAD: log: diagnose empty HEAD more clearly
2015-09-01Merge branch ↵Libravatar Junio C Hamano1-0/+10
'dt/commit-preserve-base-index-upon-opportunistic-cache-tree-update' When re-priming the cache-tree opportunistically while committing the in-core index as-is, we mistakenly invalidated the in-core index too aggressively, causing the experimental split-index code to unnecessarily rewrite the on-disk index file(s). * dt/commit-preserve-base-index-upon-opportunistic-cache-tree-update: commit: don't rewrite shared index unnecessarily
2015-09-01Merge branch 'rs/archive-zip-many'Libravatar Junio C Hamano1-0/+40
"git archive" did not use zip64 extension when creating an archive with more than 64k entries, which nobody should need, right ;-)? * rs/archive-zip-many: archive-zip: support more than 65535 entries archive-zip: use a local variable to store the creator version t5004: test ZIP archives with many entries
2015-09-01Merge branch 'ls/p4-fold-case-client-specs'Libravatar Junio C Hamano1-0/+200
On case insensitive systems, "git p4" did not work well with client specs. * ls/p4-fold-case-client-specs: git-p4: honor core.ignorecase when using P4 client specs
2015-09-01rerere: release lockfile in non-writing functionsLibravatar Jeff King1-0/+36
There's a bug in builtin/am.c in which we take a lock on MERGE_RR recursively. But rather than fix am.c, this patch fixes the confusing interface from rerere.c that caused the bug. Read on for the gory details. The setup_rerere() function both reads the existing MERGE_RR file, and takes MERGE_RR.lock. In the rerere() and rerere_forget() functions, we end up in write_rr(), which will then commit the lock file. But for functions like rerere_clear() that do not write to MERGE_RR, we expect the caller to have handled setup_rerere(). That caller would then need to release the lockfile, but it can't; the lock struct is local to rerere.c. For builtin/rerere.c, this is OK. We run a single rerere operation and then exit immediately, which has the side effect of rolling back the lockfile. But in builtin/am.c, this is actively wrong. If we run "git am -3 --skip", we call setup-rerere twice without releasing the lock: 1. The "--skip" causes us to call am_rerere_clear(), which calls setup_rerere(), but never drops the lock. 2. We then proceed to the next patch. 3. The "--3way" may cause us to call rerere() to handle conflicts in that patch, but we are already holding the lock. The lockfile code dies with: BUG: prepare_tempfile_object called for active object We could fix this by having rerere_clear() call rollback_lock_file(). But it feels a bit odd for it to roll back a lockfile that it did not itself take. So let's simplify the interface further, and handle setup_rerere in the function itself, taking away the question from the caller over whether they need to do so. We can give rerere_gc() the same treatment, as well (even though it doesn't have any callers besides builtin/rerere.c at this point). Note that these functions don't take flags from their callers to pass along to setup_rerere; that's OK, because the flags would not be meaningful for what they are doing. Both of those functions need to hold the lock because even though they do not write to MERGE_RR, they are still writing and should be protected from a simultaneous "rerere" run. But rerere_remaining(), "rerere diff", and "rerere status" are all read-only operations. They want to setup_rerere(), but do not care about taking the lock in the first place. Since our update of MERGE_RR is the usual atomic rename done by commit_lock_file, they can just do a lockless read. For that, we teach setup_rerere a READONLY flag to avoid the lock. As a bonus, this pushes builtin/rerere.c's setup_rerere call closer to the functions that use it. Which means that "git rerere totally-bogus-command" will no longer silently exit(0) in a repository without rerere enabled. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-31Merge branch 'sg/describe-contains'Libravatar Junio C Hamano1-0/+8
"git describe" without argument defaulted to describe the HEAD commit, but "git describe --contains" didn't. Arguably, in a repository used for active development, such defaulting would not be very useful as the tip of branch is typically not tagged, but it is better to be consistent. * sg/describe-contains: describe --contains: default to HEAD when no commit-ish is given
2015-08-31Merge branch 'jk/notes-merge-config'Libravatar Junio C Hamano2-0/+91
"git notes merge" can be told with "--strategy=<how>" option how to automatically handle conflicts; this can now be configured by setting notes.mergeStrategy configuration variable. * jk/notes-merge-config: notes: teach git-notes about notes.<name>.mergeStrategy option notes: add notes.mergeStrategy option to select default strategy notes: add tests for --commit/--abort/--strategy exclusivity notes: extract parse_notes_merge_strategy to notes-utils notes: extract enum notes_merge_strategy to notes-utils.h notes: document cat_sort_uniq rewriteMode
2015-08-31Merge branch 'jk/fix-alias-pager-config-key-warnings'Libravatar Junio C Hamano1-0/+9
Because the configuration system does not allow "alias.0foo" and "pager.0foo" as the configuration key, the user cannot use '0foo' as a custom command name anyway, but "git 0foo" tried to look these keys up and emitted useless warnings before saying '0foo is not a git command'. These warning messages have been squelched. * jk/fix-alias-pager-config-key-warnings: config: silence warnings for command names with invalid keys
2015-08-31Merge branch 'hv/submodule-config'Libravatar Junio C Hamano1-0/+153
The gitmodules API accessed from the C code learned to cache stuff lazily. * hv/submodule-config: submodule: allow erroneous values for the fetchRecurseSubmodules option submodule: use new config API for worktree configurations submodule: extract functions for config set and lookup submodule: implement a config API for lookup of .gitmodules values
2015-08-31Merge branch 'sg/config-name-only'Libravatar Junio C Hamano1-0/+22
"git config --list" output was hard to parse when values consist of multiple lines. "--name-only" option is added to help this. * sg/config-name-only: get_urlmatch: avoid useless strbuf write format_config: simplify buffer handling format_config: don't init strbuf config: restructure format_config() for better control flow completion: list variable names reliably with 'git config --name-only' config: add '--name-only' option to list only variable names
2015-08-31trailer: support multiline titleLibravatar Christian Couder1-0/+14
We currently ignore the first line passed to `git interpret-trailers`, when looking for the beginning of the trailers. Unfortunately this does not work well when a commit is created with a line break in the title, using for example the following command: git commit -m 'place of code: change we made' That's why instead of ignoring only the first line, it is better to ignore the first paragraph. Signed-off-by: Christian Couder <christian.couder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-31t7300: fix broken && chainsLibravatar Erik Elfström1-12/+4
While we are here, remove some boilerplate by using test_commit. Signed-off-by: Erik Elfström <erik.elfstrom@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-31log: diagnose empty HEAD more clearlyLibravatar Jeff King1-0/+14
If you init or clone an empty repository, the initial message from running "git log" is not very friendly: $ git init Initialized empty Git repository in /home/peff/foo/.git/ $ git log fatal: bad default revision 'HEAD' Let's detect this situation and write a more friendly message: $ git log fatal: your current branch 'master' does not have any commits yet We also detect the case that 'HEAD' points to a broken ref; this should be even less common, but is easy to see. Note that we do not diagnose all possible cases. We rely on resolve_ref, which means we do not get information about complex cases. E.g., "--default master" would use dwim_ref to find "refs/heads/master", but we notice only that "master" does not exist. Similarly, a complex sha1 expression like "--default HEAD^2" will not resolve as a ref. But that's OK. We fall back to a generic error message in those cases, and they are unlikely to be used anyway. Catching an empty or broken "HEAD" improves the common case, and the other cases are not regressed. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-31commit: don't rewrite shared index unnecessarilyLibravatar David Turner1-0/+10
Remove a cache invalidation which would cause the shared index to be rewritten on as-is commits. When the cache-tree has changed, we need to update it. But we don't necessarily need to update the shared index. So setting active_cache_changed to SOMETHING_CHANGED is unnecessary. Instead, we let update_main_cache_tree just update the CACHE_TREE_CHANGED bit. In order to test this, make test-dump-split-index not segfault on missing replace_bitmap/delete_bitmap. This new codepath is not called now that the test passes, but is necessary to avoid a segfault when the new test is run with the old builtin/commit.c code. Signed-off-by: David Turner <dturner@twopensource.com> Acked-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-28Merge branch 'cc/trailers-corner-case-fix'Libravatar Junio C Hamano1-1/+14
"interpret-trailers" helper mistook a single-liner log message that has a colon as the end of existing trailer. * cc/trailers-corner-case-fix: trailer: retitle a test and correct an in-comment message trailer: ignore first line of message
2015-08-28Merge branch 'dt/untracked-subdir'Libravatar Junio C Hamano1-2/+98
The experimental untracked-cache feature were buggy when paths with a few levels of subdirectories are involved. * dt/untracked-subdir: untracked cache: fix entry invalidation untracked-cache: fix subdirectory handling
2015-08-28git-p4: honor core.ignorecase when using P4 client specsLibravatar Lars Schneider1-0/+200
Perforce depot may record paths in mixed cases, e.g. "p4 files" may show that there are these two paths: //depot/Path/to/file1 //depot/pATH/to/file2 and with "p4" or "p4v", these end up in the same directory, e.g. //depot/Path/to/file1 //depot/Path/to/file2 which is the desired outcome on case insensitive systems. If git-p4 is used with client spec "//depot/Path/...", however, then all files not matching the case in the client spec are ignored (in the example above "//depot/pATH/to/file2"). Fix this by using the path case that appears first in lexicographical order when core.ignorecase is set to true. This behavior is consistent with "p4" and "p4v". Signed-off-by: Lars Schneider <larsxschneider@gmail.com> Acked-by: Luke Diamand <luke@diamand.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-28archive-zip: support more than 65535 entriesLibravatar René Scharfe1-1/+1
Support more than 65535 entries cleanly by writing a "zip64 end of central directory record" (with a 64-bit field for the number of entries) before the usual "end of central directory record" (which contains only a 16-bit field). InfoZIP's zip does the same. Archives with 65535 or less entries are not affected. Programs that extract all files like InfoZIP's zip and 7-Zip ignored the field and could extract all files already. Software that relies on the ZIP file directory to show a list of contained files quickly to simulate to normal directory like Windows' built-in ZIP functionality only saw a subset of the included files. Windows supports ZIP64 since Vista according to https://en.wikipedia.org/wiki/Zip_%28file_format%29#ZIP64. Suggested-by: Johannes Schauer <josch@debian.org> Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-28t5004: test ZIP archives with many entriesLibravatar René Scharfe1-0/+40
A ZIP file directory has a 16-bit field for the number of entries it contains. There are 64-bit extensions to deal with that. Demonstrate that git archive --format=zip currently doesn't use them and instead overflows the field. InfoZIP's unzip doesn't care about this field and extracts all files anyway. Software that uses the directory for presenting a filesystem like view quickly -- notably Windows -- depends on it, but doesn't lend itself to an automatic test case easily. Use InfoZIP's zipinfo, which probably isn't available everywhere but at least can provides *some* way to check this field. To speed things up a bit create and commit only a subset of the files and build a fake tree out of duplicates and pass that to git archive. Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-26Merge branch 'sg/t3020-typofix'Libravatar Junio C Hamano1-1/+1
* sg/t3020-typofix: t3020: fix typo in test description
2015-08-26Merge branch 'dt/untracked-sparse'Libravatar Junio C Hamano1-1/+1
Test update. * dt/untracked-sparse: t7063: use --force-untracked-cache to speed up a bit
2015-08-26Merge branch 'pt/am-builtin-abort-fix'Libravatar Junio C Hamano1-0/+24
"git am" that was recently reimplemented in C had a performance regression in "git am --abort" that goes back to the version before an attempted (and failed) patch application. * pt/am-builtin-abort-fix: am --skip/--abort: merge HEAD/ORIG_HEAD tree into index
2015-08-26trailer: retitle a test and correct an in-comment messageLibravatar Christian Couder1-1/+1
Signed-off-by: Christian Couder <christian.couder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-25Merge branch 'jk/guess-repo-name-regression-fix' into maintLibravatar Junio C Hamano1-0/+106
"git clone $URL" in recent releases of Git contains a regression in the code that invents a new repository name incorrectly based on the $URL. This has been corrected. * jk/guess-repo-name-regression-fix: clone: use computed length in guess_dir_name clone: add tests for output directory
2015-08-25Merge branch 'jk/test-with-x' into maintLibravatar Junio C Hamano1-2/+11
Running tests with the "-x" option to make them verbose had some unpleasant interactions with other features of the test suite. * jk/test-with-x: test-lib: disable trace when test is not verbose test-lib: turn off "-x" tracing during chain-lint check
2015-08-25Merge branch 'pt/am-builtin-options'Libravatar Junio C Hamano2-4/+130
After "git am --opt1" stops, running "git am --opt2" pays attention to "--opt2" only for the patch that caused the original invocation to stop. * pt/am-builtin-options: am: let --signoff override --no-signoff am: let command-line options override saved options test_terminal: redirect child process' stdin to a pty
2015-08-25Merge branch 'dt/notes-multiple'Libravatar Junio C Hamano1-0/+72
When linked worktree is used, simultaneous "notes merge" instances for the same ref in refs/notes/* are prevented from stomping on each other. * dt/notes-multiple: notes: handle multiple worktrees worktrees: add find_shared_symref
2015-08-25Merge branch 'nd/dwim-wildcards-as-pathspecs'Libravatar Junio C Hamano1-1/+1
Test updates for Windows. * nd/dwim-wildcards-as-pathspecs: t2019: skip test requiring '*' in a file name non Windows
2015-08-25Merge branch 'ee/clean-remove-dirs'Libravatar Junio C Hamano1-1/+1
Test updates for Windows. * ee/clean-remove-dirs: t7300-clean: require POSIXPERM for chmod 0 test
2015-08-25describe --contains: default to HEAD when no commit-ish is givenLibravatar SZEDER Gábor1-0/+8
'git describe --contains' doesn't default to HEAD when no commit is given, and it doesn't produce any output, not even an error: ~/src/git ((v2.5.0))$ ./git describe --contains ~/src/git ((v2.5.0))$ ./git describe --contains HEAD v2.5.0^0 Unlike other 'git describe' options, the '--contains' code path is implemented by calling 'name-rev' with a bunch of options plus all the commit-ishes that were passed to 'git describe'. If no commit-ish was present, then 'name-rev' got invoked with none, which then leads to the behavior illustrated above. Porcelain commands usually default to HEAD when no commit-ish is given, and 'git describe' already does so in all other cases, so it should do so with '--contains' as well. Pass HEAD to 'name-rev' when no commit-ish is given on the command line to make '--contains' behave consistently with other 'git describe' options. While at it, use argv_array_pushv() instead of the loop to pass commit-ishes to 'git name-rev'. 'git describe's short help already indicates that the commit-ish is optional, but the synopsis in the man page doesn't, so update it accordingly as well. Signed-off-by: SZEDER Gábor <szeder@ira.uka.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-24config: silence warnings for command names with invalid keysLibravatar Jeff King1-0/+9
When we are running the git command "foo", we may have to look up the config keys "pager.foo" and "alias.foo". These config schemes are mis-designed, as the command names can be anything, but the config syntax has some restrictions. For example: $ git foo_bar error: invalid key: pager.foo_bar error: invalid key: alias.foo_bar git: 'foo_bar' is not a git command. See 'git --help'. You cannot name an alias with an underscore. And if you have an external command with one, you cannot configure its pager. In the long run, we may develop a different config scheme for these features. But in the near term (and because we'll need to support the existing scheme indefinitely), we should at least squelch the error messages shown above. These errors come from git_config_parse_key. Ideally we would pass a "quiet" flag to the config machinery, but there are many layers between the pager code and the key parsing. Passing a flag through all of those would be an invasive change. Instead, let's provide a config function to report on whether a key is syntactically valid, and have the pager and alias code skip lookup for bogus keys. We can build this easily around the existing git_config_parse_key, with two minor modifications: 1. We now handle a NULL store_key, to validate but not write out the normalized key. 2. We accept a "quiet" flag to avoid writing to stderr. This doesn't need to be a full-blown public "flags" field, because we can make the existing implementation a static helper function, keeping the mess contained inside config.c. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-21trailer: ignore first line of messageLibravatar Christian Couder1-1/+14
When looking for the start of the trailers in the message we are passed, we should ignore the first line of the message. The reason is that if we are passed a patch or commit message then the first line should be the patch title. If we are passed only trailers we can expect that they start with an empty line that can be ignored too. This way we can properly process commit messages that have only one line with something that looks like a trailer, for example like "area of code: change we made". Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-20t3020: fix typo in test descriptionLibravatar SZEDER Gábor1-1/+1
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-19Merge branch 'jk/git-path'Libravatar Junio C Hamano1-111/+85
git_path() and mkpath() are handy helper functions but it is easy to misuse, as the callers need to be careful to keep the number of active results below 4. Their uses have been reduced. * jk/git-path: memoize common git-path "constant" files get_repo_path: refactor path-allocation find_hook: keep our own static buffer refs.c: remove_empty_directories can take a strbuf refs.c: avoid git_path assignment in lock_ref_sha1_basic refs.c: avoid repeated git_path calls in rename_tmp_log refs.c: simplify strbufs in reflog setup and writing path.c: drop git_path_submodule refs.c: remove extra git_path calls from read_loose_refs remote.c: drop extraneous local variable from migrate_file prefer mkpathdup to mkpath in assignments prefer git_pathdup to git_path in some possibly-dangerous cases add_to_alternates_file: don't add duplicate entries t5700: modernize style cache.h: complete set of git_path_submodule helpers cache.h: clarify documentation for git_path, et al
2015-08-19Merge branch 'ps/guess-repo-name-at-root'Libravatar Junio C Hamano1-9/+9
"git clone $URL", when cloning from a site whose sole purpose is to host a single repository (hence, no path after <scheme>://<site>/), tried to use the site name as the new repository name, but did not remove username or password when <site> part was of the form <user>@<pass>:<host>. The code is taught to redact these. * ps/guess-repo-name-at-root: clone: abort if no dir name could be guessed clone: do not use port number as dir name clone: do not include authentication data in guessed dir
2015-08-19Merge branch 'jk/guess-repo-name-regression-fix'Libravatar Junio C Hamano1-0/+106
"git clone $URL" in recent releases of Git contains a regression in the code that invents a new repository name incorrectly based on the $URL. This has been corrected. * jk/guess-repo-name-regression-fix: clone: use computed length in guess_dir_name clone: add tests for output directory
2015-08-19Merge branch 'jk/negative-hiderefs'Libravatar Junio C Hamano1-0/+23
A negative !ref entry in multi-value transfer.hideRefs configuration can be used to say "don't hide this one". * jk/negative-hiderefs: refs: support negative transfer.hideRefs docs/config.txt: reorder hideRefs config
2015-08-19Merge branch 'jk/test-with-x'Libravatar Junio C Hamano1-2/+11
Running tests with the "-x" option to make them verbose had some unpleasant interactions with other features of the test suite. * jk/test-with-x: test-lib: disable trace when test is not verbose test-lib: turn off "-x" tracing during chain-lint check
2015-08-19Merge branch 'ps/t1509-chroot-test-fixup'Libravatar Junio C Hamano1-4/+4
t1509 test that requires a dedicated VM environment had some bitrot, which has been corrected. * ps/t1509-chroot-test-fixup: tests: fix cleanup after tests in t1509-root-worktree tests: fix broken && chains in t1509-root-worktree
2015-08-19Merge branch 'nd/export-worktree' into maintLibravatar Junio C Hamano1-0/+17
Running an aliased command from a subdirectory when the .git thing in the working tree is a gitfile pointing elsewhere did not work. * nd/export-worktree: setup: set env $GIT_WORK_TREE when work tree is set, like $GIT_DIR
2015-08-19Merge branch 'ib/scripted-parse-opt-better-hint-string' into maintLibravatar Junio C Hamano1-39/+60
The "rev-parse --parseopt" mode parsed the option specification and the argument hint in a strange way to allow '=' and other special characters in the option name while forbidding them from the argument hint. This made it impossible to define an option like "--pair <key>=<value>" with "pair=key=value" specification, which instead would have defined a "--pair=key <value>" option. * ib/scripted-parse-opt-better-hint-string: rev-parse --parseopt: allow [*=?!] in argument hints
2015-08-19Merge branch 'as/sparse-checkout-removal' into maintLibravatar Junio C Hamano1-0/+52
"sparse checkout" misbehaved for a path that is excluded from the checkout when switching between branches that differ at the path. * as/sparse-checkout-removal: unpack-trees: don't update files with CE_WT_REMOVE set
2015-08-19submodule: allow erroneous values for the fetchRecurseSubmodules optionLibravatar Heiko Voigt1-0/+35
We should not die when reading the submodule config cache since the user might not be able to get out of that situation when the configuration is part of the history. We should handle this condition later when the value is about to be used. Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-19submodule: use new config API for worktree configurationsLibravatar Heiko Voigt1-2/+35
We remove the extracted functions and directly parse into and read out of the cache. This allows us to have one unified way of accessing submodule configuration values specific to single submodules. Regardless whether we need to access a configuration from history or from the worktree. Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net> Signed-off-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-19submodule: implement a config API for lookup of .gitmodules valuesLibravatar Heiko Voigt1-0/+85
In a superproject some commands need to interact with submodules. They need to query values from the .gitmodules file either from the worktree of from certain revisions. At the moment this is quite hard since a caller would need to read the .gitmodules file from the history and then parse the values. We want to provide an API for this so we have one place to get values from .gitmodules from any revision (including the worktree). The API is realized as a cache which allows us to lazily read .gitmodules configurations by commit into a runtime cache which can then be used to easily lookup values from it. Currently only the values for path or name are stored but it can be extended for any value needed. It is expected that .gitmodules files do not change often between commits. Thats why we lookup the .gitmodules sha1 from a commit and then either lookup an already parsed configuration or parse and cache an unknown one for each sha1. The cache is lazily build on demand for each requested commit. This cache can be used for all purposes which need knowledge about submodule configurations. Example use cases are: * Recursive submodule checkout needs to lookup a submodule name from its path when a submodule first appears. This needs be done before this configuration exists in the worktree. * The implementation of submodule support for 'git archive' needs to lookup the submodule name to generate the archive when given a revision that is not checked out. * 'git fetch' when given the --recurse-submodules=on-demand option (or configuration) needs to lookup submodule names by path from the database rather than reading from the worktree. For new submodule it needs to lookup the name from its path to allow cloning new submodules into the .git folder so they can be checked out without any network interaction when the user does a checkout of that revision. Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>