[PATCH v2 1/2] cli: introduce the concept of user defined hooks
Jani Nikula
jani at nikula.org
Sat Dec 3 15:16:48 PST 2011
Add mechanism for running user defined hooks. Hooks are executables or
symlinks to executables stored under the new notmuch hooks directory,
<database-path>/.notmuch/hooks.
No hooks are introduced here, but adding support for a hook is now a simple
matter of calling the new notmuch_run_hook() function at an appropriate
location with the hook name.
Signed-off-by: Jani Nikula <jani at nikula.org>
---
v2: Switch to git style hooks in a hook directory as suggested by Austin
Clements in IRC. Update manpage and add polish.
---
Makefile.local | 1 +
notmuch-client.h | 3 ++
notmuch-hook.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 67 insertions(+), 0 deletions(-)
create mode 100644 notmuch-hook.c
diff --git a/Makefile.local b/Makefile.local
index c94402b..a1665e1 100644
--- a/Makefile.local
+++ b/Makefile.local
@@ -302,6 +302,7 @@ notmuch_client_srcs = \
notmuch-config.c \
notmuch-count.c \
notmuch-dump.c \
+ notmuch-hook.c \
notmuch-new.c \
notmuch-reply.c \
notmuch-restore.c \
diff --git a/notmuch-client.h b/notmuch-client.h
index b50cb38..a91ad6c 100644
--- a/notmuch-client.h
+++ b/notmuch-client.h
@@ -235,6 +235,9 @@ void
notmuch_config_set_maildir_synchronize_flags (notmuch_config_t *config,
notmuch_bool_t synchronize_flags);
+int
+notmuch_run_hook (const char *db_path, const char *hook);
+
notmuch_bool_t
debugger_is_active (void);
diff --git a/notmuch-hook.c b/notmuch-hook.c
new file mode 100644
index 0000000..fc32044
--- /dev/null
+++ b/notmuch-hook.c
@@ -0,0 +1,63 @@
+/* notmuch - Not much of an email program, (just index and search)
+ *
+ * This file is part of notmuch.
+ *
+ * Copyright © 2011 Jani Nikula
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see http://www.gnu.org/licenses/ .
+ *
+ * Author: Jani Nikula <jani at nikula.org>
+ */
+
+#include "notmuch-client.h"
+
+int
+notmuch_run_hook (const char *db_path, const char *hook)
+{
+ char *hook_path;
+ int status = 0;
+
+ if (asprintf (&hook_path, "%s/%s/%s/%s", db_path, ".notmuch", "hooks",
+ hook) == -1)
+ return NOTMUCH_STATUS_OUT_OF_MEMORY;
+
+ if (access (hook_path, X_OK) == -1) {
+ /* Ignore ENOENT. It's okay not to have a hook, hook dir, or even
+ * notmuch dir. Dangling symbolic links also result in ENOENT, but
+ * we'll ignore that too for simplicity. */
+ if (errno != ENOENT) {
+ fprintf (stderr, "Error: %s hook access failed: %s\n", hook,
+ strerror (errno));
+ status = NOTMUCH_STATUS_FILE_ERROR;
+ }
+ goto DONE;
+ }
+
+ status = system (hook_path);
+ if (status) {
+ if (WIFSIGNALED(status))
+ fprintf(stderr, "Error: %s hook terminated with signal %d\n", hook,
+ WTERMSIG(status));
+ else
+ fprintf(stderr, "Error: %s hook failed with status %d\n", hook,
+ WEXITSTATUS(status));
+
+ status = NOTMUCH_STATUS_FILE_ERROR; /* Close enough */
+ }
+
+ DONE:
+ free (hook_path);
+
+ return status;
+}
--
1.7.5.4
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