git/hook.h
Emily Shaffer 1a3017d908 hooks: convert worktree 'post-checkout' hook to hook library
Move the running of the 'post-checkout' hook away from run-command.h
to the new hook.h library in builtin/worktree.c. For this special case
we need a change to the hook API to teach it to run the hook from a
given directory.

We cannot skip the "absolute_path" flag and just check if "dir" is
specified as we'd then fail to find our hook in the new dir we'd
chdir() to. We currently don't have a use-case for running a hook not
in our "base" repository at a given absolute path, so let's have "dir"
imply absolute_path(find_hook(hook_name)).

Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Acked-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-07 15:19:34 -08:00

73 lines
1.9 KiB
C

#ifndef HOOK_H
#define HOOK_H
#include "strvec.h"
struct run_hooks_opt
{
/* Environment vars to be set for each hook */
struct strvec env;
/* Args to be passed to each hook */
struct strvec args;
/* Emit an error if the hook is missing */
unsigned int error_if_missing:1;
/**
* An optional initial working directory for the hook,
* translates to "struct child_process"'s "dir" member.
*/
const char *dir;
};
#define RUN_HOOKS_OPT_INIT { \
.env = STRVEC_INIT, \
.args = STRVEC_INIT, \
}
struct hook_cb_data {
/* rc reflects the cumulative failure state */
int rc;
const char *hook_name;
const char *hook_path;
struct run_hooks_opt *options;
};
/*
* Returns the path to the hook file, or NULL if the hook is missing
* or disabled. Note that this points to static storage that will be
* overwritten by further calls to find_hook and run_hook_*.
*/
const char *find_hook(const char *name);
/**
* A boolean version of find_hook()
*/
int hook_exists(const char *hookname);
/**
* Takes a `hook_name`, resolves it to a path with find_hook(), and
* runs the hook for you with the options specified in "struct
* run_hooks opt". Will free memory associated with the "struct run_hooks_opt".
*
* Returns the status code of the run hook, or a negative value on
* error().
*/
int run_hooks_opt(const char *hook_name, struct run_hooks_opt *options);
/**
* A wrapper for run_hooks_opt() which provides a dummy "struct
* run_hooks_opt" initialized with "RUN_HOOKS_OPT_INIT".
*/
int run_hooks(const char *hook_name);
/**
* Like run_hooks(), a wrapper for run_hooks_opt().
*
* In addition to the wrapping behavior provided by run_hooks(), this
* wrapper takes a list of strings terminated by a NULL
* argument. These things will be used as positional arguments to the
* hook. This function behaves like the old run_hook_le() API.
*/
int run_hooks_l(const char *hook_name, ...);
#endif