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blob 186c249bbec0d0bd874c8a6596e598aa1729ee22 3614 bytes (raw)
name: hook.c 	 # note: path name is non-authoritative(*)

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#include "cache.h"
#include "hook.h"
#include "run-command.h"
#include "config.h"

const char *find_hook(const char *name)
{
	static struct strbuf path = STRBUF_INIT;

	strbuf_reset(&path);
	strbuf_git_path(&path, "hooks/%s", name);
	if (access(path.buf, X_OK) < 0) {
		int err = errno;

#ifdef STRIP_EXTENSION
		strbuf_addstr(&path, STRIP_EXTENSION);
		if (access(path.buf, X_OK) >= 0)
			return path.buf;
		if (errno == EACCES)
			err = errno;
#endif

		if (err == EACCES && advice_enabled(ADVICE_IGNORED_HOOK)) {
			static struct string_list advise_given = STRING_LIST_INIT_DUP;

			if (!string_list_lookup(&advise_given, name)) {
				string_list_insert(&advise_given, name);
				advise(_("The '%s' hook was ignored because "
					 "it's not set as executable.\n"
					 "You can disable this warning with "
					 "`git config advice.ignoredHook false`."),
				       path.buf);
			}
		}
		return NULL;
	}
	return path.buf;
}

int hook_exists(const char *name)
{
	return !!find_hook(name);
}

void run_hooks_opt_clear(struct run_hooks_opt *o)
{
	strvec_clear(&o->env);
	strvec_clear(&o->args);
}

static int pick_next_hook(struct child_process *cp,
			  struct strbuf *out,
			  void *pp_cb,
			  void **pp_task_cb)
{
	struct hook_cb_data *hook_cb = pp_cb;
	struct hook *run_me = hook_cb->run_me;

	if (!run_me)
		return 0;

	cp->no_stdin = 1;
	cp->env = hook_cb->options->env.v;
	cp->stdout_to_stderr = 1;
	cp->trace2_hook_name = hook_cb->hook_name;
	cp->dir = hook_cb->options->dir;

	/* add command */
	strvec_push(&cp->args, run_me->hook_path);

	/*
	 * add passed-in argv, without expanding - let the user get back
	 * exactly what they put in
	 */
	strvec_pushv(&cp->args, hook_cb->options->args.v);

	/* Provide context for errors if necessary */
	*pp_task_cb = run_me;

	/*
	 * This pick_next_hook() will be called again, we're only
	 * running one hook, so indicate that no more work will be
	 * done.
	 */
	hook_cb->run_me = NULL;

	return 1;
}

static int notify_start_failure(struct strbuf *out,
				void *pp_cb,
				void *pp_task_cp)
{
	struct hook_cb_data *hook_cb = pp_cb;
	struct hook *attempted = pp_task_cp;

	hook_cb->rc |= 1;

	strbuf_addf(out, _("Couldn't start hook '%s'\n"),
		    attempted->hook_path);

	return 1;
}

static int notify_hook_finished(int result,
				struct strbuf *out,
				void *pp_cb,
				void *pp_task_cb)
{
	struct hook_cb_data *hook_cb = pp_cb;

	hook_cb->rc |= result;

	return 0;
}

int run_hooks(const char *hook_name, const char *hook_path,
	      struct run_hooks_opt *options)
{
	struct strbuf abs_path = STRBUF_INIT;
	struct hook my_hook = {
		.hook_path = hook_path,
	};
	struct hook_cb_data cb_data = {
		.rc = 0,
		.hook_name = hook_name,
		.options = options,
	};
	int jobs = 1;

	if (!options)
		BUG("a struct run_hooks_opt must be provided to run_hooks");

	if (options->absolute_path) {
		strbuf_add_absolute_path(&abs_path, hook_path);
		my_hook.hook_path = abs_path.buf;
	}
	cb_data.run_me = &my_hook;

	run_processes_parallel_tr2(jobs,
				   pick_next_hook,
				   notify_start_failure,
				   notify_hook_finished,
				   &cb_data,
				   "hook",
				   hook_name);

	if (options->absolute_path)
		strbuf_release(&abs_path);

	return cb_data.rc;
}

int run_hooks_oneshot(const char *hook_name, struct run_hooks_opt *options)
{
	const char *hook_path;
	struct run_hooks_opt hook_opt_scratch = RUN_HOOKS_OPT_INIT;
	int ret = 0;

	if (!options)
		options = &hook_opt_scratch;

	hook_path = find_hook(hook_name);
	if (!hook_path)
		goto cleanup;

	ret = run_hooks(hook_name, hook_path, options);
cleanup:
	run_hooks_opt_clear(options);

	return ret;
}

debug log:

solving 186c249bbec ...
found 186c249bbec in https://public-inbox.org/git/patch-05.13-15d71fc210b-20211012T131934Z-avarab@gmail.com/
found bfdc79e2f1a in https://public-inbox.org/git/patch-02.13-dbac4204f7b-20211012T131934Z-avarab@gmail.com/
found 240270db64e in https://public-inbox.org/git/patch-01.13-a39c0748d3f-20211012T131934Z-avarab@gmail.com/
found 55e1145a4b7 in https://80x24.org/mirrors/git.git
preparing index
index prepared:
100644 55e1145a4b7b8c59276f082ab0b240817702ace4	hook.c

applying [1/3] https://public-inbox.org/git/patch-01.13-a39c0748d3f-20211012T131934Z-avarab@gmail.com/
diff --git a/hook.c b/hook.c
index 55e1145a4b7..240270db64e 100644


applying [2/3] https://public-inbox.org/git/patch-02.13-dbac4204f7b-20211012T131934Z-avarab@gmail.com/
diff --git a/hook.c b/hook.c
index 240270db64e..bfdc79e2f1a 100644


applying [3/3] https://public-inbox.org/git/patch-05.13-15d71fc210b-20211012T131934Z-avarab@gmail.com/
diff --git a/hook.c b/hook.c
index bfdc79e2f1a..186c249bbec 100644

Checking patch hook.c...
Applied patch hook.c cleanly.
Checking patch hook.c...
Applied patch hook.c cleanly.
Checking patch hook.c...
Applied patch hook.c cleanly.

index at:
100644 186c249bbec0d0bd874c8a6596e598aa1729ee22	hook.c

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