[PATCH 09/13] git-p4: use 'git hook' to run hooks

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

From: Emily Shaffer <emilyshaffer@google.com>

Instead of duplicating the behavior of run-command.h:run_hook_le() in
Python, we can directly call 'git hook run'. We emulate the existence
check with the --ignore-missing flag.

As this is the last hook execution in git.git to not go through "git
hook run" or the hook.[ch] library we can now be absolutely sure that
our assertion in hook.c that only hooks known by the generated (from
githooks(5)) hook-list.h are permitted.

Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 git-p4.py | 72 ++++++-------------------------------------------------
 1 file changed, 7 insertions(+), 65 deletions(-)

diff --git a/git-p4.py b/git-p4.py
index 2b4500226aa..1f24cbf0bca 100755
--- a/git-p4.py
+++ b/git-p4.py
@@ -207,71 +207,13 @@ def decode_path(path):
         return path
 
 def run_git_hook(cmd, param=[]):
-    """Execute a hook if the hook exists."""
-    if verbose:
-        sys.stderr.write("Looking for hook: %s\n" % cmd)
-        sys.stderr.flush()
-
-    hooks_path = gitConfig("core.hooksPath")
-    if len(hooks_path) <= 0:
-        hooks_path = os.path.join(os.environ["GIT_DIR"], "hooks")
-
-    if not isinstance(param, list):
-        param=[param]
-
-    # resolve hook file name, OS depdenent
-    hook_file = os.path.join(hooks_path, cmd)
-    if platform.system() == 'Windows':
-        if not os.path.isfile(hook_file):
-            # look for the file with an extension
-            files = glob.glob(hook_file + ".*")
-            if not files:
-                return True
-            files.sort()
-            hook_file = files.pop()
-            while hook_file.upper().endswith(".SAMPLE"):
-                # The file is a sample hook. We don't want it
-                if len(files) > 0:
-                    hook_file = files.pop()
-                else:
-                    return True
-
-    if not os.path.isfile(hook_file) or not os.access(hook_file, os.X_OK):
-        return True
-
-    return run_hook_command(hook_file, param) == 0
-
-def run_hook_command(cmd, param):
-    """Executes a git hook command
-       cmd = the command line file to be executed. This can be
-       a file that is run by OS association.
-
-       param = a list of parameters to pass to the cmd command
-
-       On windows, the extension is checked to see if it should
-       be run with the Git for Windows Bash shell.  If there
-       is no file extension, the file is deemed a bash shell
-       and will be handed off to sh.exe. Otherwise, Windows
-       will be called with the shell to handle the file assocation.
-
-       For non Windows operating systems, the file is called
-       as an executable.
-    """
-    cli = [cmd] + param
-    use_shell = False
-    if platform.system() == 'Windows':
-        (root,ext) = os.path.splitext(cmd)
-        if ext == "":
-            exe_path = os.environ.get("EXEPATH")
-            if exe_path is None:
-                exe_path = ""
-            else:
-                exe_path = os.path.join(exe_path, "bin")
-            cli = [os.path.join(exe_path, "SH.EXE")] + cli
-        else:
-            use_shell = True
-    return subprocess.call(cli, shell=use_shell)
-
+    """args are specified with -a <arg> -a <arg> -a <arg>"""
+    args = ['git', 'hook', 'run', '--ignore-missing', cmd]
+    if param:
+        args.append("--")
+        for p in param:
+            args.append(p)
+    return subprocess.call(args) == 0
 
 def write_pipe(c, stdin):
     if verbose:
-- 
2.33.0.1567.g7b23ce7ed9e