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2018-05-08Merge branch 'sb/object-store-replace'Libravatar Junio C Hamano1-0/+3
The effort to pass the repository in-core structure throughout the API continues. This round deals with the code that implements the refs/replace/ mechanism. * sb/object-store-replace: replace-object: allow lookup_replace_object to handle arbitrary repositories replace-object: allow do_lookup_replace_object to handle arbitrary repositories replace-object: allow prepare_replace_object to handle arbitrary repositories refs: allow for_each_replace_ref to handle arbitrary repositories refs: store the main ref store inside the repository struct replace-object: add repository argument to lookup_replace_object replace-object: add repository argument to do_lookup_replace_object replace-object: add repository argument to prepare_replace_object refs: add repository argument to for_each_replace_ref refs: add repository argument to get_main_ref_store replace-object: check_replace_refs is safe in multi repo environment replace-object: eliminate replace objects prepared flag object-store: move lookup_replace_object to replace-object.h replace-object: move replace_map to object store replace_object: use oidmap
2018-04-12refs: store the main ref store inside the repository structLibravatar Stefan Beller1-0/+3
This moves the 'main_ref_store', which was a global variable in refs.c into the repository struct. This patch does not deal with the parts in the refs subsystem which deal with the submodules there. A later patch needs to get rid of the submodule exposure in the refs API, such as 'get_submodule_ref_store(path)'. Acked-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-29submodule: fixup nested submodules after moving the submoduleLibravatar Stefan Beller1-0/+3
connect_work_tree_and_git_dir is used to connect a submodule worktree with its git directory and vice versa after events that require a reconnection such as moving around the working tree. As submodules can have nested submodules themselves, we'd also want to fix the nested submodules when asked to. Add an option to recurse into the nested submodules and connect them as well. As submodules are identified by their name (which determines their git directory in relation to their superproject's git directory) internally and by their path in the working tree of the superproject, we need to make sure that the mapping of name <-> path is kept intact. We can do that in the git-mv command by writing out the gitmodules file first and then forcing a reload of the submodule config machinery. Signed-off-by: Stefan Beller <sbeller@google.com> Reviewed-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-23repository: introduce raw object store fieldLibravatar Stefan Beller1-7/+4
The raw object store field will contain any objects needed for access to objects in a given repository. This patch introduces the raw object store and populates it with the `objectdir`, which used to be part of the repository struct. As the struct gains members, we'll also populate the function to clear the memory for these members. In a later step, we'll introduce a struct object_parser, that will complement the object parsing in a repository struct: The raw object parser is the layer that will provide access to raw object content, while the higher level object parser code will parse raw objects and keeps track of parenthood and other object relationships using 'struct object'. For now only add the lower level to the repository struct. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-23repository.h: add comment and clarify repo_set_gitdirLibravatar Nguyễn Thái Ngọc Duy1-1/+5
The argument name "optional" may mislead the reader to think this option could be NULL. But it can't be. While at there, document a bit more about struct set_gitdir_args. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-05repository: delete ignore_env memberLibravatar Nguyễn Thái Ngọc Duy1-9/+0
This variable was added because the repo_set_gitdir() was created to cover both submodule and main repos, but these two are initialized a bit differently so ignore_env == 0 means main repo, while ignore_env != 0 is submodules. Since the difference part (env variables) has been moved out of repo_set_gitdir(), this function works the same way for both repo types and ignore_env is not needed anymore. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-05sha1_file.c: move delayed getenv(altdb) back to setup_git_env()Libravatar Nguyễn Thái Ngọc Duy1-0/+4
getenv() is supposed to work on the main repository only. This delayed getenv() code in sha1_file.c makes it more difficult to convert sha1_file.c to a generic object store that could be used by both submodule and main repositories. Move the getenv() back in setup_git_env() where other env vars are also fetched. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-05repository.c: move env-related setup code back to environment.cLibravatar Nguyễn Thái Ngọc Duy1-1/+10
It does not make sense that generic repository code contains handling of environment variables, which are specific for the main repository only. Refactor repo_set_gitdir() function to take $GIT_DIR and optionally _all_ other customizable paths. These optional paths can be NULL and will be calculated according to the default directory layout. Note that some dead functions are left behind to reduce diff noise. They will be deleted in the next patch. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-05repository: initialize the_repository in main()Libravatar Nguyễn Thái Ngọc Duy1-1/+1
This simplifies initialization of struct repository and anything inside. Easier to read. Easier to add/remove fields. Everything will go through main() common-main.c so this should cover all programs, including t/helper. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-11-13Integrate hash algorithm support with repo setupLibravatar brian m. carlson1-0/+5
In future versions of Git, we plan to support an additional hash algorithm. Integrate the enumeration of hash algorithms with repository setup, and store a pointer to the enumerated data in struct repository. Of course, we currently only support SHA-1, so hard-code this value in read_repository_format. In the future, we'll enumerate this value from the configuration. Add a constant, the_hash_algo, which points to the hash_algo structure pointer in the repository global. Note that this is the hash which is used to serialize data to disk, not the hash which is used to display items to the user. The transition plan anticipates that these may be different. We can add an additional element in the future (say, ui_hash_algo) to provide for this case. Include repository.h in cache.h since we now need to have access to these struct and variable definitions. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-18repo_read_index: don't discard the indexLibravatar Brandon Williams1-0/+8
Have 'repo_read_index()' behave more like the other read_index family of functions and don't discard the index if it has already been populated and instead rely on the quick return of read_index_from which has: /* istate->initialized covers both .git/index and .git/sharedindex.xxx */ if (istate->initialized) return istate->cache_nr; Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-23repository: enable initialization of submodulesLibravatar Brandon Williams1-0/+10
Introduce 'repo_submodule_init()' which performs initialization of a 'struct repository' as a submodule of another 'struct repository'. The resulting submodule 'struct repository' can be in one of three states: 1. The submodule is initialized and has a worktree. 2. The submodule is initialized but does not have a worktree. This would occur when the submodule's gitdir is present in the superproject's 'gitdir/modules/' directory yet the submodule has not been checked out in superproject's worktree. 3. The submodule remains uninitialized due to an error in the initialization process or there is no matching submodule at the provided path in the superproject. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-23submodule-config: store the_submodule_cache in the_repositoryLibravatar Brandon Williams1-0/+4
Refactor how 'the_submodule_cache' is handled so that it can be stored inside of a repository object. Also migrate 'the_submodule_cache' to be stored in 'the_repository'. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-23repository: add index_state to struct repoLibravatar Brandon Williams1-0/+9
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-23config: read config from a repository objectLibravatar Brandon Williams1-0/+10
Teach the config machinery to read config information from a repository object. This involves storing a 'struct config_set' inside the repository object and adding a number of functions (repo_config*) to be able to query a repository's config. The current config API enables lazy-loading of the config. This means that when 'git_config_get_int()' is called, if the_config_set hasn't been populated yet, then it will be populated and properly initialized by reading the necessary config files (system wide .gitconfig, user's home .gitconfig, and the repository's config). To maintain this paradigm, the new API to read from a repository object's config will also perform this lazy-initialization. Since both APIs (git_config_get* and repo_config_get*) have the same semantics we can migrate the default config to be stored within 'the_repository' and just have the 'git_config_get*' family of functions redirect to the 'repo_config_get*' functions. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-23repository: introduce the repository objectLibravatar Brandon Williams1-0/+64
Introduce the repository object 'struct repository' which can be used to hold all state pertaining to a git repository. Some of the benefits of object-ifying a repository are: 1. Make the code base more readable and easier to reason about. 2. Allow for working on multiple repositories, specifically submodules, within the same process. Currently the process for working on a submodule involves setting up an argv_array of options for a particular command and then launching a child process to execute the command in the context of the submodule. This is clunky and can require lots of little hacks in order to ensure correctness. Ideally it would be nice to simply pass a repository and an options struct to a command. 3. Eliminating reliance on global state will make it easier to enable the use of threading to improve performance. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>