[GSoC Patch 4/7] repo: add path.hooks with absolute and relative suffix formatting

[K Jayatheerth <jayatheerthkulkarni2005@gmail.com>]

External tool integrations and validation systems need a stable way to
identify where the repository hooks are stored. Currently, this involves
relying on `git rev-parse --git-path hooks` or querying `core.hooksPath`
manually.

Introduce `path.hooks.absolute` and `path.hooks.relative` keys to
`git repo info`. This allows tools to discover the active hooks location
natively, ensuring proper resolution regardless of whether Git is using
the standard `.git/hooks` structure or a custom `core.hooksPath` setup.

Mentored-by: Justin Tobler <jltobler@gmail.com>
Mentored-by: Lucas Seiki Oshiro <lucasseikioshiro@gmail.com>
Signed-off-by: K Jayatheerth <jayatheerthkulkarni2005@gmail.com>
---
 Documentation/git-repo.adoc |  8 ++++++++
 builtin/repo.c              | 22 ++++++++++++++++++++++
 t/t1900-repo-info.sh        |  6 ++++++
 3 files changed, 36 insertions(+)

diff --git a/Documentation/git-repo.adoc b/Documentation/git-repo.adoc
index 8429a44b43..7bc1c51310 100644
--- a/Documentation/git-repo.adoc
+++ b/Documentation/git-repo.adoc
@@ -119,6 +119,14 @@ values that they return:
 `path.gitdir.relative`::
 	The path to the Git repository directory relative to the current working directory.
 
+`path.hooks.absolute`::
+	The canonical absolute path to the repository's hooks directory.
+	Respects `core.hooksPath` configuration adjustments.
+
+`path.hooks.relative`::
+	The path to the repository's hooks directory relative to the current
+	working directory. Respects `core.hooksPath` configuration adjustments.
+
 `path.objects.absolute`::
 	The canonical absolute path to the repository's object database directory.
 	Respects the `GIT_OBJECT_DIRECTORY` environment override.
diff --git a/builtin/repo.c b/builtin/repo.c
index d6bdd5bcfa..c921de222d 100644
--- a/builtin/repo.c
+++ b/builtin/repo.c
@@ -122,6 +122,26 @@ static int get_path_gitdir_relative(struct repository *repo, struct strbuf *buf)
 	return 0;
 }
 
+static int get_path_hooks_absolute(struct repository *repo, struct strbuf *buf)
+{
+	struct strbuf hooks_path = STRBUF_INIT;
+
+	repo_git_path_replace(repo, &hooks_path, "hooks");
+	format_path(buf, hooks_path.buf, startup_info->prefix, PATH_FORMAT_CANONICAL);
+	strbuf_release(&hooks_path);
+	return 0;
+}
+
+static int get_path_hooks_relative(struct repository *repo, struct strbuf *buf)
+{
+	struct strbuf hooks_path = STRBUF_INIT;
+
+	repo_git_path_replace(repo, &hooks_path, "hooks");
+	format_path(buf, hooks_path.buf, startup_info->prefix, PATH_FORMAT_RELATIVE);
+	strbuf_release(&hooks_path);
+	return 0;
+}
+
 static int get_path_objects_absolute(struct repository *repo, struct strbuf *buf)
 {
 	const char *obj_dir = repo_get_object_directory(repo);
@@ -216,6 +236,8 @@ static const struct repo_info_field repo_info_field[] = {
 	{ "path.commondir.relative", get_path_commondir_relative },
 	{ "path.gitdir.absolute", get_path_gitdir_absolute },
 	{ "path.gitdir.relative", get_path_gitdir_relative },
+	{ "path.hooks.absolute", get_path_hooks_absolute },
+	{ "path.hooks.relative", get_path_hooks_relative },
 	{ "path.objects.absolute", get_path_objects_absolute },
 	{ "path.objects.relative", get_path_objects_relative },
 	{ "path.superproject-working-tree.absolute", get_path_superproject_absolute },
diff --git a/t/t1900-repo-info.sh b/t/t1900-repo-info.sh
index 260f4fde43..cd3f856d04 100755
--- a/t/t1900-repo-info.sh
+++ b/t/t1900-repo-info.sh
@@ -213,6 +213,12 @@ test_repo_info_path 'gitdir with explicit GIT_DIR' 'gitdir' \
 	'.git' \
 	'GIT_DIR="../.git" && export GIT_DIR'
 
+test_repo_info_path 'hooks standard fallback' 'hooks' '.git/hooks'
+
+test_repo_info_path 'hooks with core.hooksPath override' 'hooks' \
+	'custom-hooks' \
+	'git config core.hooksPath "$ROOT/custom-hooks" && mkdir -p "$ROOT/custom-hooks"'
+
 test_repo_info_path 'objects standard' 'objects' '.git/objects'
 
 test_repo_info_path 'objects with GIT_OBJECT_DIRECTORY override' 'objects' \
-- 
2.55.GIT