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2018-08-20Merge branch 'nd/no-the-index'Libravatar Junio C Hamano1-1/+1
The more library-ish parts of the codebase learned to work on the in-core index-state instance that is passed in by their callers, instead of always working on the singleton "the_index" instance. * nd/no-the-index: (24 commits) blame.c: remove implicit dependency on the_index apply.c: remove implicit dependency on the_index apply.c: make init_apply_state() take a struct repository apply.c: pass struct apply_state to more functions resolve-undo.c: use the right index instead of the_index archive-*.c: use the right repository archive.c: avoid access to the_index grep: use the right index instead of the_index attr: remove index from git_attr_set_direction() entry.c: use the right index instead of the_index submodule.c: use the right index instead of the_index pathspec.c: use the right index instead of the_index unpack-trees: avoid the_index in verify_absent() unpack-trees: convert clear_ce_flags* to avoid the_index unpack-trees: don't shadow global var the_index unpack-trees: add a note about path invalidation unpack-trees: remove 'extern' on function declaration ls-files: correct index argument to get_convert_attr_ascii() preload-index.c: use the right index instead of the_index dir.c: remove an implicit dependency on the_index in pathspec code ...
2018-08-14cat-file: use a single strbuf for all outputLibravatar Jeff King1-11/+17
When we're in batch mode, we end up in batch_object_write() for each object, which allocates its own strbuf for each call. Instead, we can provide a single "scratch" buffer that gets reused for each output. When running: git cat-file --batch-all-objects --batch-check='%(objectname)' on git.git, my best-of-five time drops from: real 0m0.171s user 0m0.159s sys 0m0.012s to: real 0m0.133s user 0m0.121s sys 0m0.012s Note that we could do this just by putting the "scratch" pointer into "struct expand_data", but I chose instead to add an extra parameter to the callstack. That's more verbose, but it makes it a bit more obvious what is going on, which in turn makes it easy to see where we need to be releasing the string in the caller (right after the loop which uses it in each case). Based-on-a-patch-by: René Scharfe <l.s.r@web.de> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-14cat-file: split batch "buf" into two variablesLibravatar Jeff King1-6/+8
We use the "buf" strbuf for two things: to read incoming lines, and as a scratch space for test-expanding the user-provided format. Let's split this into two variables with descriptive names, which makes their purpose and lifetime more clear. It will also help in a future patch when we start using the "output" buffer for more expansions. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-14cat-file: use oidset check-and-insertLibravatar Jeff King1-2/+1
We don't need to check if the oidset has our object before we insert it; that's done as part of the insertion. We can just rely on the return value from oidset_insert(), which saves one hash lookup per object. This measurable speedup is tiny and within the run-to-run noise, but the result is simpler to read, too. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-13convert.c: remove an implicit dependency on the_indexLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Make the convert API take an index_state instead of assuming the_index in convert.c. All external call sites are converted blindly to keep the patch simple and retain current behavior. Individual call sites may receive further updates to use the right index instead of the_index. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-13cat-file: support "unordered" output for --batch-all-objectsLibravatar Jeff King1-5/+51
If you're going to access the contents of every object in a packfile, it's generally much more efficient to do so in pack order, rather than in hash order. That increases the locality of access within the packfile, which in turn is friendlier to the delta base cache, since the packfile puts related deltas next to each other. By contrast, hash order is effectively random, since the sha1 has no discernible relationship to the content. This patch introduces an "--unordered" option to cat-file which iterates over packs in pack-order under the hood. You can see the results when dumping all of the file content: $ time ./git cat-file --batch-all-objects --buffer --batch | wc -c 6883195596 real 0m44.491s user 0m42.902s sys 0m5.230s $ time ./git cat-file --unordered \ --batch-all-objects --buffer --batch | wc -c 6883195596 real 0m6.075s user 0m4.774s sys 0m3.548s Same output, different order, way faster. The same speed-up applies even if you end up accessing the object content in a different process, like: git cat-file --batch-all-objects --buffer --batch-check | grep blob | git cat-file --batch='%(objectname) %(rest)' | wc -c Adding "--unordered" to the first command drops the runtime in git.git from 24s to 3.5s. Side note: there are actually further speedups available for doing it all in-process now. Since we are outputting the object content during the actual pack iteration, we know where to find the object and could skip the extra lookup done by oid_object_info(). This patch stops short of that optimization since the underlying API isn't ready for us to make those sorts of direct requests. So if --unordered is so much better, why not make it the default? Two reasons: 1. We've promised in the documentation that --batch-all-objects outputs in hash order. Since cat-file is plumbing, people may be relying on that default, and we can't change it. 2. It's actually _slower_ for some cases. We have to compute the pack revindex to walk in pack order. And our de-duplication step uses an oidset, rather than a sort-and-dedup, which can end up being more expensive. If we're just accessing the type and size of each object, for example, like: git cat-file --batch-all-objects --buffer --batch-check my best-of-five warm cache timings go from 900ms to 1100ms using --unordered. Though it's possible in a cold-cache or under memory pressure that we could do better, since we'd have better locality within the packfile. And one final question: why is it "--unordered" and not "--pack-order"? The answer is again two-fold: 1. "pack order" isn't a well-defined thing across the whole set of objects. We're hitting loose objects, as well as objects in multiple packs, and the only ordering we're promising is _within_ a single pack. The rest is apparently random. 2. The point here is optimization. So we don't want to promise any particular ordering, but only to say that we will choose an ordering which is likely to be efficient for accessing the object content. That leaves the door open for further changes in the future without having to add another compatibility option. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-13cat-file: rename batch_{loose,packed}_object callbacksLibravatar Jeff King1-9/+9
We're not really doing the batch-show operation in these callbacks, but just collecting the set of objects. That distinction will become more important in a future patch, so let's rename them now to avoid cluttering that diff. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-18Merge branch 'sb/object-store-grafts'Libravatar Junio C Hamano1-0/+1
The conversion to pass "the_repository" and then "a_repository" throughout the object access API continues. * sb/object-store-grafts: commit: allow lookup_commit_graft to handle arbitrary repositories commit: allow prepare_commit_graft to handle arbitrary repositories shallow: migrate shallow information into the object parser path.c: migrate global git_path_* to take a repository argument cache: convert get_graft_file to handle arbitrary repositories commit: convert read_graft_file to handle arbitrary repositories commit: convert register_commit_graft to handle arbitrary repositories commit: convert commit_graft_pos() to handle arbitrary repositories shallow: add repository argument to is_repository_shallow shallow: add repository argument to check_shallow_file_for_update shallow: add repository argument to register_shallow shallow: add repository argument to set_alternate_shallow_file commit: add repository argument to lookup_commit_graft commit: add repository argument to prepare_commit_graft commit: add repository argument to read_graft_file commit: add repository argument to register_commit_graft commit: add repository argument to commit_graft_pos object: move grafts to object parser object-store: move object access functions to object-store.h
2018-05-30Merge branch 'js/use-bug-macro'Libravatar Junio C Hamano1-2/+2
Developer support update, by using BUG() macro instead of die() to mark codepaths that should not happen more clearly. * js/use-bug-macro: BUG_exit_code: fix sparse "symbol not declared" warning Convert remaining die*(BUG) messages Replace all die("BUG: ...") calls by BUG() ones run-command: use BUG() to report bugs, not die() test-tool: help verifying BUG() code paths
2018-05-16object-store: move object access functions to object-store.hLibravatar Stefan Beller1-0/+1
This should make these functions easier to find and cache.h less overwhelming to read. In particular, this moves: - read_object_file - oid_object_info - write_object_file As a result, most of the codebase needs to #include object-store.h. In this patch the #include is only added to files that would fail to compile otherwise. It would be better to #include wherever identifiers from the header are used. That can happen later when we have better tooling for it. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-06Replace all die("BUG: ...") calls by BUG() onesLibravatar Johannes Schindelin1-2/+2
In d8193743e08 (usage.c: add BUG() function, 2017-05-12), a new macro was introduced to use for reporting bugs instead of die(). It was then subsequently used to convert one single caller in 588a538ae55 (setup_git_env: convert die("BUG") to BUG(), 2017-05-12). The cover letter of the patch series containing this patch (cf 20170513032414.mfrwabt4hovujde2@sigill.intra.peff.net) is not terribly clear why only one call site was converted, or what the plan is for other, similar calls to die() to report bugs. Let's just convert all remaining ones in one fell swoop. This trick was performed by this invocation: sed -i 's/die("BUG: /BUG("/g' $(git grep -l 'die("BUG' \*.c) Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-26cache.h: add repository argument to oid_object_infoLibravatar Stefan Beller1-3/+3
Add a repository argument to allow the callers of oid_object_info to be more specific about which repository to handle. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. As with the previous commits, use a macro to catch callers passing a repository other than the_repository at compile time. Signed-off-by: Stefan Beller <sbeller@google.com> Reviewed-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-26cache.h: add repository argument to oid_object_info_extendedLibravatar Stefan Beller1-3/+3
Add a repository argument to allow oid_object_info_extended callers to be more specific about which repository to act on. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. Signed-off-by: Stefan Beller <sbeller@google.com> Reviewed-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14sha1_file: convert read_sha1_file to struct object_idLibravatar brian m. carlson1-6/+8
Convert read_sha1_file to take a pointer to struct object_id and rename it read_object_file. Do the same for read_sha1_file_extended. Convert one use in grep.c to use the new function without any other code change, since the pointer being passed is a void pointer that is already initialized with a pointer to struct object_id. Update the declaration and definitions of the modified functions, and apply the following semantic patch to convert the remaining callers: @@ expression E1, E2, E3; @@ - read_sha1_file(E1.hash, E2, E3) + read_object_file(&E1, E2, E3) @@ expression E1, E2, E3; @@ - read_sha1_file(E1->hash, E2, E3) + read_object_file(E1, E2, E3) @@ expression E1, E2, E3, E4; @@ - read_sha1_file_extended(E1.hash, E2, E3, E4) + read_object_file_extended(&E1, E2, E3, E4) @@ expression E1, E2, E3, E4; @@ - read_sha1_file_extended(E1->hash, E2, E3, E4) + read_object_file_extended(E1, E2, E3, E4) Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14sha1_file: convert read_object_with_reference to object_idLibravatar brian m. carlson1-1/+1
Convert read_object_with_reference to take pointers to struct object_id. Update the internals of the function accordingly. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14sha1_file: convert sha1_object_info* to object_idLibravatar brian m. carlson1-7/+7
Convert sha1_object_info and sha1_object_info_extended to take pointers to struct object_id and rename them to use "oid" instead of "sha1" in their names. Update the declaration and definition and apply the following semantic patch, plus the standard object_id transforms: @@ expression E1, E2; @@ - sha1_object_info(E1.hash, E2) + oid_object_info(&E1, E2) @@ expression E1, E2; @@ - sha1_object_info(E1->hash, E2) + oid_object_info(E1, E2) @@ expression E1, E2, E3; @@ - sha1_object_info_extended(E1.hash, E2, E3) + oid_object_info_extended(&E1, E2, E3) @@ expression E1, E2, E3; @@ - sha1_object_info_extended(E1->hash, E2, E3) + oid_object_info_extended(E1, E2, E3) Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-06Merge branch 'bw/c-plus-plus'Libravatar Junio C Hamano1-2/+2
Avoid using identifiers that clash with C++ keywords. Even though it is not a goal to compile Git with C++ compilers, changes like this help use of code analysis tools that targets C++ on our codebase. * bw/c-plus-plus: (37 commits) replace: rename 'new' variables trailer: rename 'template' variables tempfile: rename 'template' variables wrapper: rename 'template' variables environment: rename 'namespace' variables diff: rename 'template' variables environment: rename 'template' variables init-db: rename 'template' variables unpack-trees: rename 'new' variables trailer: rename 'new' variables submodule: rename 'new' variables split-index: rename 'new' variables remote: rename 'new' variables ref-filter: rename 'new' variables read-cache: rename 'new' variables line-log: rename 'new' variables imap-send: rename 'new' variables http: rename 'new' variables entry: rename 'new' variables diffcore-delta: rename 'new' variables ...
2018-02-14object: rename function 'typename' to 'type_name'Libravatar Brandon Williams1-1/+1
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-14object_info: change member name from 'typename' to 'type_name'Libravatar Brandon Williams1-1/+1
Rename C++ keyword in order to bring the codebase closer to being able to be compiled with a C++ compiler. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-08sha1_file: support lazily fetching missing objectsLibravatar Jonathan Tan1-0/+2
Teach sha1_file to fetch objects from the remote configured in extensions.partialclone whenever an object is requested but missing. The fetching of objects can be suppressed through a global variable. This is used by fsck and index-pack. However, by default, such fetching is not suppressed. This is meant as a temporary measure to ensure that all Git commands work in such a situation. Future patches will update some commands to either tolerate missing objects (without fetching them) or be more efficient in fetching them. In order to determine the code changes in sha1_file.c necessary, I investigated the following: (1) functions in sha1_file.c that take in a hash, without the user regarding how the object is stored (loose or packed) (2) functions in packfile.c (because I need to check callers that know about the loose/packed distinction and operate on both differently, and ensure that they can handle the concept of objects that are neither loose nor packed) (1) is handled by the modification to sha1_object_info_extended(). For (2), I looked at for_each_packed_object and others. For for_each_packed_object, the callers either already work or are fixed in this patch: - reachable - only to find recent objects - builtin/fsck - already knows about missing objects - builtin/cat-file - warning message added in this commit Callers of the other functions do not need to be changed: - parse_pack_index - http - indirectly from http_get_info_packs - find_pack_entry_one - this searches a single pack that is provided as an argument; the caller already knows (through other means) that the sought object is in a specific pack - find_sha1_pack - fast-import - appears to be an optimization to not store a file if it is already in a pack - http-walker - to search through a struct alt_base - http-push - to search through remote packs - has_sha1_pack - builtin/fsck - already knows about promisor objects - builtin/count-objects - informational purposes only (check if loose object is also packed) - builtin/prune-packed - check if object to be pruned is packed (if not, don't prune it) - revision - used to exclude packed objects if requested by user - diff - just for optimization Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-28Merge branch 'jk/fallthrough'Libravatar Junio C Hamano1-0/+1
Many codepaths have been updated to squelch -Wimplicit-fallthrough warnings from Gcc 7 (which is a good code hygiene). * jk/fallthrough: consistently use "fallthrough" comments in switches curl_trace(): eliminate switch fallthrough test-line-buffer: simplify command parsing
2017-09-28Merge branch 'jk/diff-blob'Libravatar Junio C Hamano1-2/+2
"git cat-file --textconv" started segfaulting recently, which has been corrected. * jk/diff-blob: cat-file: handle NULL object_context.path
2017-09-22consistently use "fallthrough" comments in switchesLibravatar Jeff King1-0/+1
Gcc 7 adds -Wimplicit-fallthrough, which can warn when a switch case falls through to the next case. The general idea is that the compiler can't tell if this was intentional or not, so you should annotate any intentional fall-throughs as such, leaving it to complain about any unannotated ones. There's a GNU __attribute__ which can be used for annotation, but of course we'd have to #ifdef it away on non-gcc compilers. Gcc will also recognize specially-formatted comments, which matches our current practice. Let's extend that practice to all of the unannotated sites (which I did look over and verify that they were behaving as intended). Ideally in each case we'd actually give some reasons in the comment about why we're falling through, or what we're falling through to. And gcc does support that with -Wimplicit-fallthrough=2, which relaxes the comment pattern matching to anything that contains "fallthrough" (or a variety of spelling variants). However, this isn't the default for -Wimplicit-fallthrough, nor for -Wextra. In the name of simplicity, it's probably better for us to support the default level, which requires "fallthrough" to be the only thing in the comment (modulo some window dressing like "else" and some punctuation; see the gcc manual for the complete set of patterns). This patch suppresses all warnings due to -Wimplicit-fallthrough. We might eventually want to add that to the DEVELOPER Makefile knob, but we should probably wait until gcc 7 is more widely adopted (since earlier versions will complain about the unknown warning type). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-22cat-file: handle NULL object_context.pathLibravatar Jeff King1-2/+2
Commit dc944b65f1 (get_sha1_with_context: dynamically allocate oc->path, 2017-05-19) changed the rules that callers must follow for seeing if we parsed a path in the object name. The rules switched from "check if the oc.path buffer is empty" to "check if the oc.path pointer is NULL". But that commit forgot to update some sites in cat_one_file(), meaning we might dereference a NULL pointer. You can see this by making a path-aware request like --textconv without specifying --path, and giving an object name that doesn't have a path in it. Like: git cat-file --textconv HEAD which will reliably segfault. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-08-23pack: move for_each_packed_object()Libravatar Jonathan Tan1-0/+1
Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-17sha1_name: convert GET_SHA1* flags to GET_OID*Libravatar brian m. carlson1-2/+2
Convert the flags for get_oid_with_context and friends to use "OID" instead of "SHA1" in their names. This transform was made by running the following one-liner on the affected files: perl -pi -e 's/GET_SHA1/GET_OID/g' Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-17sha1_name: convert get_sha1* to get_oid*Libravatar brian m. carlson1-3/+3
Now that all the callers of get_sha1 directly or indirectly use struct object_id, rename the functions starting with get_sha1 to start with get_oid. Convert the internals in sha1_name.c to use struct object_id as well, and eliminate explicit length checks where possible. Convert a use of 40 in get_oid_basic to GIT_SHA1_HEXSZ. Outside of sha1_name.c and cache.h, this transition was made with the following semantic patch: @@ expression E1, E2; @@ - get_sha1(E1, E2.hash) + get_oid(E1, &E2) @@ expression E1, E2; @@ - get_sha1(E1, E2->hash) + get_oid(E1, E2) @@ expression E1, E2; @@ - get_sha1_committish(E1, E2.hash) + get_oid_committish(E1, &E2) @@ expression E1, E2; @@ - get_sha1_committish(E1, E2->hash) + get_oid_committish(E1, E2) @@ expression E1, E2; @@ - get_sha1_treeish(E1, E2.hash) + get_oid_treeish(E1, &E2) @@ expression E1, E2; @@ - get_sha1_treeish(E1, E2->hash) + get_oid_treeish(E1, E2) @@ expression E1, E2; @@ - get_sha1_commit(E1, E2.hash) + get_oid_commit(E1, &E2) @@ expression E1, E2; @@ - get_sha1_commit(E1, E2->hash) + get_oid_commit(E1, E2) @@ expression E1, E2; @@ - get_sha1_tree(E1, E2.hash) + get_oid_tree(E1, &E2) @@ expression E1, E2; @@ - get_sha1_tree(E1, E2->hash) + get_oid_tree(E1, E2) @@ expression E1, E2; @@ - get_sha1_blob(E1, E2.hash) + get_oid_blob(E1, &E2) @@ expression E1, E2; @@ - get_sha1_blob(E1, E2->hash) + get_oid_blob(E1, E2) @@ expression E1, E2, E3, E4; @@ - get_sha1_with_context(E1, E2, E3.hash, E4) + get_oid_with_context(E1, E2, &E3, E4) @@ expression E1, E2, E3, E4; @@ - get_sha1_with_context(E1, E2, E3->hash, E4) + get_oid_with_context(E1, E2, E3, E4) Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-05Merge branch 'jt/unify-object-info'Libravatar Junio C Hamano1-3/+4
Code clean-ups. * jt/unify-object-info: sha1_file: refactor has_sha1_file_with_flags sha1_file: do not access pack if unneeded sha1_file: teach sha1_object_info_extended more flags sha1_file: refactor read_object sha1_file: move delta base cache code up sha1_file: rename LOOKUP_REPLACE_OBJECT sha1_file: rename LOOKUP_UNKNOWN_OBJECT sha1_file: teach packed_object_info about typename
2017-06-24Merge branch 'bw/config-h'Libravatar Junio C Hamano1-0/+1
Fix configuration codepath to pay proper attention to commondir that is used in multi-worktree situation, and isolate config API into its own header file. * bw/config-h: config: don't implicitly use gitdir or commondir config: respect commondir setup: teach discover_git_directory to respect the commondir config: don't include config.h by default config: remove git_config_iter config: create config.h
2017-06-21sha1_file: rename LOOKUP_REPLACE_OBJECTLibravatar Jonathan Tan1-2/+3
The LOOKUP_REPLACE_OBJECT flag controls whether the lookup_replace_object() function is invoked by sha1_object_info_extended(), read_sha1_file_extended(), and lookup_replace_object_extended(), but it is not immediately clear which functions accept that flag. Therefore restrict this flag to only sha1_object_info_extended(), renaming it appropriately to OBJECT_INFO_LOOKUP_REPLACE and adding some documentation. Update read_sha1_file_extended() to have a boolean parameter instead, and delete lookup_replace_object_extended(). parse_sha1_header() also passes this flag to parse_sha1_header_extended() since commit 46f0344 ("sha1_file: support reading from a loose object of unknown type", 2015-05-03), but that has had no effect since that commit. Therefore this patch also removes this flag from that invocation. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-21sha1_file: rename LOOKUP_UNKNOWN_OBJECTLibravatar Jonathan Tan1-1/+1
The LOOKUP_UNKNOWN_OBJECT flag was introduced in commit 46f0344 ("sha1_file: support reading from a loose object of unknown type", 2015-05-03) in order to support a feature in cat-file subsequently introduced in commit 39e4ae3 ("cat-file: teach cat-file a '--allow-unknown-type' option", 2015-05-03). Despite its name and location in cache.h, this flag is used neither in read_sha1_file_extended() nor in any of the lookup functions, but used only in sha1_object_info_extended(). Therefore rename this flag to OBJECT_INFO_ALLOW_UNKNOWN_TYPE, taking the name of the cat-file flag that invokes this feature, and move it closer to the declaration of sha1_object_info_extended(). Also add documentation for this flag. OBJECT_INFO_ALLOW_UNKNOWN_TYPE is defined to 2, not 1, to avoid conflicting with LOOKUP_REPLACE_OBJECT. Avoidance of this conflict is necessary because sha1_object_info_extended() supports both flags. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-15config: don't include config.h by defaultLibravatar Brandon Williams1-0/+1
Stop including config.h by default in cache.h. Instead only include config.h in those files which require use of the config system. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-05Merge branch 'js/blame-lib'Libravatar Junio C Hamano1-0/+1
The internal logic used in "git blame" has been libified to make it easier to use by cgit. * js/blame-lib: (29 commits) blame: move entry prepend to libgit blame: move scoreboard setup to libgit blame: move scoreboard-related methods to libgit blame: move fake-commit-related methods to libgit blame: move origin-related methods to libgit blame: move core structures to header blame: create entry prepend function blame: create scoreboard setup function blame: create scoreboard init function blame: rework methods that determine 'final' commit blame: wrap blame_sort and compare_blame_final blame: move progress updates to a scoreboard callback blame: make sanity_check use a callback in scoreboard blame: move no_whole_file_rename flag to scoreboard blame: move xdl_opts flags to scoreboard blame: move show_root flag to scoreboard blame: move reverse flag to scoreboard blame: move contents_from to scoreboard blame: move copy/move thresholds to scoreboard blame: move stat counters to scoreboard ...
2017-06-02Merge branch 'jk/diff-blob'Libravatar Junio C Hamano1-1/+3
The result from "git diff" that compares two blobs, e.g. "git diff $commit1:$path $commit2:$path", used to be shown with the full object name as given on the command line, but it is more natural to use the $path in the output and use it to look up .gitattributes. * jk/diff-blob: diff: use blob path for blob/file diffs diff: use pending "path" if it is available diff: use the word "path" instead of "name" for blobs diff: pass whole pending entry in blobinfo handle_revision_arg: record paths for pending objects handle_revision_arg: record modes for "a..b" endpoints t4063: add tests of direct blob diffs get_sha1_with_context: dynamically allocate oc->path get_sha1_with_context: always initialize oc->symlink_path sha1_name: consistently refer to object_context as "oc" handle_revision_arg: add handle_dotdot() helper handle_revision_arg: hoist ".." check out of range parsing handle_revision_arg: stop using "dotdot" as a generic pointer handle_revision_arg: simplify commit reference lookups handle_revision_arg: reset "dotdot" consistently
2017-05-24blame: move textconv_object with related functionsLibravatar Jeff Smith1-0/+1
textconv_object is used in places other than blame.c and should be moved to a more appropriate location. Other textconv related functions are located in diff.c so that seems as good a place as any. Signed-off-by: Jeff Smith <whydoubt@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-24get_sha1_with_context: dynamically allocate oc->pathLibravatar Jeff King1-1/+3
When a sha1 lookup returns the tree path via "struct object_context", it just copies it into a fixed-size buffer. This means the result can be truncated, and it means our "struct object_context" consumes a lot of stack space. Instead, let's allocate a string on the heap. Because most callers don't care about this information, we'll avoid doing it by default (so they don't all have to start calling free() on the result). There are basically two options for the caller to signal to us that it's interested: 1. By setting a pointer to storage in the object_context. 2. By passing a flag in another parameter. Doing (1) would match the way that sha1_object_info_extended() works. But it would mean that every caller would have to initialize the object_context, which they don't currently have to do. This patch does (2), and adds a new bit to the function's flags field. All of the callers that look at the "path" field are updated to pass the new flag. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-08cat-file: fix memory leakLibravatar Johannes Schindelin1-0/+1
Discovered by Coverity. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-31Rename sha1_array to oid_arrayLibravatar brian m. carlson1-5/+5
Since this structure handles an array of object IDs, rename it to struct oid_array. Also rename the accessor functions and the initialization constant. This commit was produced mechanically by providing non-Documentation files to the following Perl one-liners: perl -pi -E 's/struct sha1_array/struct oid_array/g' perl -pi -E 's/\bsha1_array_/oid_array_/g' perl -pi -E 's/SHA1_ARRAY_INIT/OID_ARRAY_INIT/g' Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-31Convert sha1_array_for_each_unique and for_each_abbrev to object_idLibravatar brian m. carlson1-2/+2
Make sha1_array_for_each_unique take a callback using struct object_id. Since one of these callbacks is an argument to for_each_abbrev, convert those as well. Rename various functions, replacing "sha1" with "oid". Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-31Make sha1_array_append take a struct object_id *Libravatar brian m. carlson1-2/+2
Convert the callers to pass struct object_id by changing the function declaration and definition and applying the following semantic patch: @@ expression E1, E2; @@ - sha1_array_append(E1, E2.hash) + sha1_array_append(E1, &E2) @@ expression E1, E2; @@ - sha1_array_append(E1, E2->hash) + sha1_array_append(E1, E2) Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-22Convert object iteration callbacks to struct object_idLibravatar brian m. carlson1-4/+4
Convert each_loose_object_fn and each_packed_object_fn to take a pointer to struct object_id. Update the various callbacks. Convert several 40-based constants to use GIT_SHA1_HEXSZ. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10Merge branch 'jk/pack-objects-optim-mru'Libravatar Junio C Hamano1-3/+2
"git pack-objects" in a repository with many packfiles used to spend a lot of time looking for/at objects in them; the accesses to the packfiles are now optimized by checking the most-recently-used packfile first. * jk/pack-objects-optim-mru: pack-objects: use mru list when iterating over packs pack-objects: break delta cycles before delta-search phase sha1_file: make packed_object_info public provide an initializer for "struct object_info"
2016-09-26sha1_array: let callbacks interrupt iterationLibravatar Jeff King1-1/+2
The callbacks for iterating a sha1_array must have a void return. This is unlike our usual for_each semantics, where a callback may interrupt iteration and have its value propagated. Let's switch it to the usual form, which will enable its use in more places (e.g., where we are replacing an existing iteration with a different data structure). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-21Merge branch 'js/cat-file-filters'Libravatar Junio C Hamano1-8/+96
Even though "git hash-objects", which is a tool to take an on-filesystem data stream and put it into the Git object store, allowed to perform the "outside-world-to-Git" conversions (e.g. end-of-line conversions and application of the clean-filter), and it had the feature on by default from very early days, its reverse operation "git cat-file", which takes an object from the Git object store and externalize for the consumption by the outside world, lacked an equivalent mechanism to run the "Git-to-outside-world" conversion. The command learned the "--filters" option to do so. * js/cat-file-filters: cat-file: support --textconv/--filters in batch mode cat-file --textconv/--filters: allow specifying the path separately cat-file: introduce the --filters option cat-file: fix a grammo in the man page
2016-09-19Merge branch 'bc/object-id'Libravatar Junio C Hamano1-34/+36
The "unsigned char sha1[20]" to "struct object_id" conversion continues. Notable changes in this round includes that ce->sha1, i.e. the object name recorded in the cache_entry, turns into an object_id. It had merge conflicts with a few topics in flight (Christian's "apply.c split", Dscho's "cat-file --filters" and Jeff Hostetler's "status --porcelain-v2"). Extra sets of eyes double-checking for mismerges are highly appreciated. * bc/object-id: builtin/reset: convert to use struct object_id builtin/commit-tree: convert to struct object_id builtin/am: convert to struct object_id refs: add an update_ref_oid function. sha1_name: convert get_sha1_mb to struct object_id builtin/update-index: convert file to struct object_id notes: convert init_notes to use struct object_id builtin/rm: convert to use struct object_id builtin/blame: convert file to use struct object_id Convert read_mmblob to take struct object_id. notes-merge: convert struct notes_merge_pair to struct object_id builtin/checkout: convert some static functions to struct object_id streaming: make stream_blob_to_fd take struct object_id builtin: convert textconv_object to use struct object_id builtin/cat-file: convert some static functions to struct object_id builtin/cat-file: convert struct expand_data to use struct object_id builtin/log: convert some static functions to use struct object_id builtin/blame: convert struct origin to use struct object_id builtin/apply: convert static functions to struct object_id cache: convert struct cache_entry to use struct object_id
2016-09-11cat-file: support --textconv/--filters in batch modeLibravatar Johannes Schindelin1-5/+44
With this patch, --batch can be combined with --textconv or --filters. For this to work, the input needs to have the form <object name><single white space><path> so that the filters can be chosen appropriately. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-11cat-file --textconv/--filters: allow specifying the path separatelyLibravatar Johannes Schindelin1-5/+21
There are circumstances when it is relatively easy to figure out the object name for a given path, but not the name of the containing tree. For example, when looking at a diff generated by Git, the object names are recorded, but not the revision. As a matter of fact, the revisions from which the diff was generated may not even exist locally. In such a case, the user would have to generate a fake revision just to be able to use --textconv or --filters. Let's simplify this dramatically, because we do not really need that revision at all: all we care about is that we know the path. In the scenario described above, we do know the path, and we just want to specify it separately from the object name. Example usage: git cat-file --textconv --path=main.c 0f1937fd Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-11cat-file: introduce the --filters optionLibravatar Johannes Schindelin1-1/+35
The --filters option applies the convert_to_working_tree() filter for the path when showing the contents of a regular file blob object; the contents are written out as-is for other types of objects. This feature comes in handy when a 3rd-party tool wants to work with the contents of files from past revisions as if they had been checked out, but without detouring via temporary files. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-08cat-file: put spaces around pipes in usage stringLibravatar Alex Henrie1-1/+1
This makes the style a little more consistent with other usage strings, and will resolve a warning at https://www.softcatala.org/recursos/quality/git.html Signed-off-by: Alex Henrie <alexhenrie24@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-07streaming: make stream_blob_to_fd take struct object_idLibravatar brian m. carlson1-3/+3
Since all of its callers have been updated, modify stream_blob_to_fd to take a struct object_id. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>