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

From
Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Date
Oct 12, 2021, 13:30 UTC
Message-ID
<patch-09.13-69cc447a1e1-20211012T131934Z-avarab@gmail.com>
In-Reply-To
<cover-00.13-00000000000-20211012T131934Z-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
Previous: Ævar Arnfjörð BjarmasonNext: Ævar Arnfjörð Bjarmason
Message 12 of 18 in “hook.[ch]: new library to run hooks + simple hook conversion”
  1. 00/13 hook.[ch]: new library to run hooks + simple hook conversionÆvar Arnfjörð Bjarmason, Oct 12, 2021
  2. 01/13 hook: add 'run' subcommandÆvar Arnfjörð Bjarmason, Oct 12, 2021
  3. René ScharfeOct 12, 2021
  4. Ævar Arnfjörð BjarmasonOct 13, 2021
  5. Bagas SanjayaOct 13, 2021
  6. Ævar Arnfjörð BjarmasonOct 13, 2021
  7. 02/13 gc: use hook library for pre-auto-gc hookÆvar Arnfjörð Bjarmason, Oct 12, 2021
  8. 03/13 rebase: convert pre-rebase to use hook.hÆvar Arnfjörð Bjarmason, Oct 12, 2021
  9. 04/13 am: convert applypatch to use hook.hÆvar Arnfjörð Bjarmason, Oct 12, 2021
  10. 05/13 hooks: convert 'post-checkout' hook to hook libraryÆvar Arnfjörð Bjarmason, Oct 12, 2021
  11. 06/13 merge: convert post-merge to use hook.hÆvar Arnfjörð Bjarmason, Oct 12, 2021
  12. 09/13 git-p4: use 'git hook' to run hooksÆvar Arnfjörð Bjarmason, Oct 12, 2021
  13. 07/13 git hook run: add an --ignore-missing flagÆvar Arnfjörð Bjarmason, Oct 12, 2021
  14. 10/13 commit: convert {pre-commit,prepare-commit-msg} hook to hook.hÆvar Arnfjörð Bjarmason, Oct 12, 2021
  15. 12/13 receive-pack: convert push-to-checkout hook to hook.hÆvar Arnfjörð Bjarmason, Oct 12, 2021
  16. 11/13 read-cache: convert post-index-change to use hook.hÆvar Arnfjörð Bjarmason, Oct 12, 2021
  17. 13/13 run-command: remove old run_hook_{le,ve}() hook APIÆvar Arnfjörð Bjarmason, Oct 12, 2021
  18. 08/13 send-email: use 'git hook run' for 'sendemail-validate'Ævar Arnfjörð Bjarmason, Oct 12, 2021

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