4002ec3dcf
The "--super-prefix" option to "git" was initially added in [1] for use with "ls-files"[2], and shortly thereafter "submodule--helper"[3] and "grep"[4]. It wasn't until [5] that "read-tree" made use of it. At the time [5] made sense, but since then we've made "ls-files" recurse in-process in [6], "grep" in [7], and finally "submodule--helper" in the preceding commits. Let's also remove it from "read-tree", which allows us to remove the option to "git" itself. We can do this because the only remaining user of it is the submodule API, which will now invoke "read-tree" with its new "--super-prefix" option. It will only do so when the "submodule_move_head()" function is called. That "submodule_move_head()" function was then only invoked by "read-tree" itself, but now rather than setting an environment variable to pass "--super-prefix" between cmd_read_tree() we: - Set a new "super_prefix" in "struct unpack_trees_options". The "super_prefixed()" function in "unpack-trees.c" added in [5] will now use this, rather than get_super_prefix() looking up the environment variable we set earlier in the same process. - Add the same field to the "struct checkout", which is only needed to ferry the "super_prefix" in the "struct unpack_trees_options" all the way down to the "entry.c" callers of "submodule_move_head()". Those calls which used the super prefix all originated in "cmd_read_tree()". The only other caller is the "unlink_entry()" caller in "builtin/checkout.c", which now passes a "NULL". 1.74866d7579(git: make super-prefix option, 2016-10-07) 2.e77aa336f1(ls-files: optionally recurse into submodules, 2016-10-07) 3.89c8626557(submodule helper: support super prefix, 2016-12-08) 4.0281e487fd(grep: optionally recurse into submodules, 2016-12-16) 5.3d415425c7(unpack-trees: support super-prefix option, 2017-01-17) 6.188dce131f(ls-files: use repository object, 2017-06-22) 7.f9ee2fcdfa(grep: recurse in-process using 'struct repository', 2017-08-02) Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
248 lines
12 KiB
C
248 lines
12 KiB
C
#ifndef BUILTIN_H
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#define BUILTIN_H
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#include "git-compat-util.h"
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#include "strbuf.h"
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#include "cache.h"
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#include "commit.h"
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/*
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* builtin API
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* ===========
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*
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* Adding a new built-in
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* ---------------------
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*
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* There are 4 things to do to add a built-in command implementation to
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* Git:
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*
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* . Define the implementation of the built-in command `foo` with
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* signature:
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*
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* int cmd_foo(int argc, const char **argv, const char *prefix);
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*
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* . Add the external declaration for the function to `builtin.h`.
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*
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* . Add the command to the `commands[]` table defined in `git.c`.
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* The entry should look like:
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*
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* { "foo", cmd_foo, <options> },
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*
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* where options is the bitwise-or of:
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*
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* `RUN_SETUP`:
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* If there is not a Git directory to work on, abort. If there
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* is a work tree, chdir to the top of it if the command was
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* invoked in a subdirectory. If there is no work tree, no
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* chdir() is done.
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*
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* `RUN_SETUP_GENTLY`:
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* If there is a Git directory, chdir as per RUN_SETUP, otherwise,
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* don't chdir anywhere.
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*
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* `USE_PAGER`:
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*
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* If the standard output is connected to a tty, spawn a pager and
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* feed our output to it.
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*
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* `NEED_WORK_TREE`:
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*
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* Make sure there is a work tree, i.e. the command cannot act
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* on bare repositories.
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* This only makes sense when `RUN_SETUP` is also set.
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*
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* `DELAY_PAGER_CONFIG`:
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*
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* If RUN_SETUP or RUN_SETUP_GENTLY is set, git.c normally handles
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* the `pager.<cmd>`-configuration. If this flag is used, git.c
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* will skip that step, instead allowing the built-in to make a
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* more informed decision, e.g., by ignoring `pager.<cmd>` for
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* certain subcommands.
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*
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* . Add `builtin/foo.o` to `BUILTIN_OBJS` in `Makefile`.
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*
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* Additionally, if `foo` is a new command, there are 4 more things to do:
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*
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* . Add tests to `t/` directory.
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*
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* . Write documentation in `Documentation/git-foo.txt`.
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*
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* . Add an entry for `git-foo` to `command-list.txt`.
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*
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* . Add an entry for `/git-foo` to `.gitignore`.
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*
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*
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* How a built-in is called
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* ------------------------
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*
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* The implementation `cmd_foo()` takes three parameters, `argc`, `argv,
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* and `prefix`. The first two are similar to what `main()` of a
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* standalone command would be called with.
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*
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* When `RUN_SETUP` is specified in the `commands[]` table, and when you
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* were started from a subdirectory of the work tree, `cmd_foo()` is called
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* after chdir(2) to the top of the work tree, and `prefix` gets the path
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* to the subdirectory the command started from. This allows you to
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* convert a user-supplied pathname (typically relative to that directory)
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* to a pathname relative to the top of the work tree.
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*
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* The return value from `cmd_foo()` becomes the exit status of the
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* command.
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*/
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extern const char git_usage_string[];
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extern const char git_more_info_string[];
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/**
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* If a built-in has DELAY_PAGER_CONFIG set, the built-in should call this early
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* when it wishes to respect the `pager.foo`-config. The `cmd` is the name of
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* the built-in, e.g., "foo". If a paging-choice has already been setup, this
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* does nothing. The default in `def` should be 0 for "pager off", 1 for "pager
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* on" or -1 for "punt".
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*
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* You should most likely use a default of 0 or 1. "Punt" (-1) could be useful
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* to be able to fall back to some historical compatibility name.
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*/
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void setup_auto_pager(const char *cmd, int def);
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int is_builtin(const char *s);
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int cmd_add(int argc, const char **argv, const char *prefix);
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int cmd_am(int argc, const char **argv, const char *prefix);
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int cmd_annotate(int argc, const char **argv, const char *prefix);
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int cmd_apply(int argc, const char **argv, const char *prefix);
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int cmd_archive(int argc, const char **argv, const char *prefix);
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int cmd_bisect(int argc, const char **argv, const char *prefix);
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int cmd_blame(int argc, const char **argv, const char *prefix);
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int cmd_branch(int argc, const char **argv, const char *prefix);
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int cmd_bugreport(int argc, const char **argv, const char *prefix);
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int cmd_bundle(int argc, const char **argv, const char *prefix);
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int cmd_cat_file(int argc, const char **argv, const char *prefix);
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int cmd_checkout(int argc, const char **argv, const char *prefix);
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int cmd_checkout__worker(int argc, const char **argv, const char *prefix);
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int cmd_checkout_index(int argc, const char **argv, const char *prefix);
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int cmd_check_attr(int argc, const char **argv, const char *prefix);
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int cmd_check_ignore(int argc, const char **argv, const char *prefix);
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int cmd_check_mailmap(int argc, const char **argv, const char *prefix);
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int cmd_check_ref_format(int argc, const char **argv, const char *prefix);
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int cmd_cherry(int argc, const char **argv, const char *prefix);
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int cmd_cherry_pick(int argc, const char **argv, const char *prefix);
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int cmd_clone(int argc, const char **argv, const char *prefix);
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int cmd_clean(int argc, const char **argv, const char *prefix);
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int cmd_column(int argc, const char **argv, const char *prefix);
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int cmd_commit(int argc, const char **argv, const char *prefix);
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int cmd_commit_graph(int argc, const char **argv, const char *prefix);
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int cmd_commit_tree(int argc, const char **argv, const char *prefix);
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int cmd_config(int argc, const char **argv, const char *prefix);
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int cmd_count_objects(int argc, const char **argv, const char *prefix);
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int cmd_credential(int argc, const char **argv, const char *prefix);
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int cmd_credential_cache(int argc, const char **argv, const char *prefix);
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int cmd_credential_cache_daemon(int argc, const char **argv, const char *prefix);
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int cmd_credential_store(int argc, const char **argv, const char *prefix);
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int cmd_describe(int argc, const char **argv, const char *prefix);
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int cmd_diagnose(int argc, const char **argv, const char *prefix);
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int cmd_diff_files(int argc, const char **argv, const char *prefix);
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int cmd_diff_index(int argc, const char **argv, const char *prefix);
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int cmd_diff(int argc, const char **argv, const char *prefix);
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int cmd_diff_tree(int argc, const char **argv, const char *prefix);
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int cmd_difftool(int argc, const char **argv, const char *prefix);
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int cmd_env__helper(int argc, const char **argv, const char *prefix);
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int cmd_fast_export(int argc, const char **argv, const char *prefix);
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int cmd_fast_import(int argc, const char **argv, const char *prefix);
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int cmd_fetch(int argc, const char **argv, const char *prefix);
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int cmd_fetch_pack(int argc, const char **argv, const char *prefix);
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int cmd_fmt_merge_msg(int argc, const char **argv, const char *prefix);
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int cmd_for_each_ref(int argc, const char **argv, const char *prefix);
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int cmd_for_each_repo(int argc, const char **argv, const char *prefix);
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int cmd_format_patch(int argc, const char **argv, const char *prefix);
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int cmd_fsck(int argc, const char **argv, const char *prefix);
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int cmd_fsmonitor__daemon(int argc, const char **argv, const char *prefix);
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int cmd_gc(int argc, const char **argv, const char *prefix);
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int cmd_get_tar_commit_id(int argc, const char **argv, const char *prefix);
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int cmd_grep(int argc, const char **argv, const char *prefix);
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int cmd_hash_object(int argc, const char **argv, const char *prefix);
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int cmd_help(int argc, const char **argv, const char *prefix);
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int cmd_hook(int argc, const char **argv, const char *prefix);
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int cmd_index_pack(int argc, const char **argv, const char *prefix);
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int cmd_init_db(int argc, const char **argv, const char *prefix);
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int cmd_interpret_trailers(int argc, const char **argv, const char *prefix);
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int cmd_log(int argc, const char **argv, const char *prefix);
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int cmd_log_reflog(int argc, const char **argv, const char *prefix);
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int cmd_ls_files(int argc, const char **argv, const char *prefix);
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int cmd_ls_tree(int argc, const char **argv, const char *prefix);
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int cmd_ls_remote(int argc, const char **argv, const char *prefix);
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int cmd_mailinfo(int argc, const char **argv, const char *prefix);
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int cmd_mailsplit(int argc, const char **argv, const char *prefix);
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int cmd_maintenance(int argc, const char **argv, const char *prefix);
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int cmd_merge(int argc, const char **argv, const char *prefix);
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int cmd_merge_base(int argc, const char **argv, const char *prefix);
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int cmd_merge_index(int argc, const char **argv, const char *prefix);
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int cmd_merge_ours(int argc, const char **argv, const char *prefix);
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int cmd_merge_file(int argc, const char **argv, const char *prefix);
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int cmd_merge_recursive(int argc, const char **argv, const char *prefix);
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int cmd_merge_tree(int argc, const char **argv, const char *prefix);
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int cmd_mktag(int argc, const char **argv, const char *prefix);
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int cmd_mktree(int argc, const char **argv, const char *prefix);
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int cmd_multi_pack_index(int argc, const char **argv, const char *prefix);
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int cmd_mv(int argc, const char **argv, const char *prefix);
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int cmd_name_rev(int argc, const char **argv, const char *prefix);
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int cmd_notes(int argc, const char **argv, const char *prefix);
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int cmd_pack_objects(int argc, const char **argv, const char *prefix);
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int cmd_pack_redundant(int argc, const char **argv, const char *prefix);
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int cmd_patch_id(int argc, const char **argv, const char *prefix);
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int cmd_prune(int argc, const char **argv, const char *prefix);
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int cmd_prune_packed(int argc, const char **argv, const char *prefix);
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int cmd_pull(int argc, const char **argv, const char *prefix);
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int cmd_push(int argc, const char **argv, const char *prefix);
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int cmd_range_diff(int argc, const char **argv, const char *prefix);
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int cmd_read_tree(int argc, const char **argv, const char *prefix);
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int cmd_rebase(int argc, const char **argv, const char *prefix);
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int cmd_rebase__interactive(int argc, const char **argv, const char *prefix);
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int cmd_receive_pack(int argc, const char **argv, const char *prefix);
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int cmd_reflog(int argc, const char **argv, const char *prefix);
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int cmd_remote(int argc, const char **argv, const char *prefix);
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int cmd_remote_ext(int argc, const char **argv, const char *prefix);
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int cmd_remote_fd(int argc, const char **argv, const char *prefix);
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int cmd_repack(int argc, const char **argv, const char *prefix);
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int cmd_rerere(int argc, const char **argv, const char *prefix);
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int cmd_reset(int argc, const char **argv, const char *prefix);
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int cmd_restore(int argc, const char **argv, const char *prefix);
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int cmd_rev_list(int argc, const char **argv, const char *prefix);
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int cmd_rev_parse(int argc, const char **argv, const char *prefix);
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int cmd_revert(int argc, const char **argv, const char *prefix);
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int cmd_rm(int argc, const char **argv, const char *prefix);
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int cmd_send_pack(int argc, const char **argv, const char *prefix);
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int cmd_shortlog(int argc, const char **argv, const char *prefix);
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int cmd_show(int argc, const char **argv, const char *prefix);
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int cmd_show_branch(int argc, const char **argv, const char *prefix);
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int cmd_show_index(int argc, const char **argv, const char *prefix);
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int cmd_sparse_checkout(int argc, const char **argv, const char *prefix);
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int cmd_status(int argc, const char **argv, const char *prefix);
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int cmd_stash(int argc, const char **argv, const char *prefix);
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int cmd_stripspace(int argc, const char **argv, const char *prefix);
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int cmd_submodule__helper(int argc, const char **argv, const char *prefix);
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int cmd_switch(int argc, const char **argv, const char *prefix);
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int cmd_symbolic_ref(int argc, const char **argv, const char *prefix);
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int cmd_tag(int argc, const char **argv, const char *prefix);
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int cmd_unpack_file(int argc, const char **argv, const char *prefix);
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int cmd_unpack_objects(int argc, const char **argv, const char *prefix);
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int cmd_update_index(int argc, const char **argv, const char *prefix);
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int cmd_update_ref(int argc, const char **argv, const char *prefix);
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int cmd_update_server_info(int argc, const char **argv, const char *prefix);
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int cmd_upload_archive(int argc, const char **argv, const char *prefix);
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int cmd_upload_archive_writer(int argc, const char **argv, const char *prefix);
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int cmd_upload_pack(int argc, const char **argv, const char *prefix);
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int cmd_var(int argc, const char **argv, const char *prefix);
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int cmd_verify_commit(int argc, const char **argv, const char *prefix);
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int cmd_verify_tag(int argc, const char **argv, const char *prefix);
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int cmd_version(int argc, const char **argv, const char *prefix);
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int cmd_whatchanged(int argc, const char **argv, const char *prefix);
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int cmd_worktree(int argc, const char **argv, const char *prefix);
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int cmd_write_tree(int argc, const char **argv, const char *prefix);
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int cmd_verify_pack(int argc, const char **argv, const char *prefix);
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int cmd_show_ref(int argc, const char **argv, const char *prefix);
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int cmd_pack_refs(int argc, const char **argv, const char *prefix);
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int cmd_replace(int argc, const char **argv, const char *prefix);
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#endif
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