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From: Peter Wang <novalazy@gmail.com>
To: notmuch@notmuchmail.org
Subject: [PATCH v2 06/10] cli: refactor insert
Date: Wed, 16 Apr 2014 22:59:21 +1000
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Change insert_message into write_message and move its responsibilities
for indexing the message into the main function, to simplify the control
flow.
---
 notmuch-insert.c | 63 +++++++++++++++++++++++++++-----------------------------
 1 file changed, 30 insertions(+), 33 deletions(-)

diff --git a/notmuch-insert.c b/notmuch-insert.c
index 6752fc8..7db4f73 100644
--- a/notmuch-insert.c
+++ b/notmuch-insert.c
@@ -338,59 +338,48 @@ add_file_to_database (notmuch_database_t *notmuch, const char *path,
 }
 
 static notmuch_bool_t
-insert_message (void *ctx, notmuch_database_t *notmuch, int fdin,
-		const char *dir, tag_op_list_t *tag_ops,
-		notmuch_bool_t synchronize_flags)
+write_message (void *ctx, int fdin, const char *dir, char **newpath)
 {
     char *tmppath;
-    char *newpath;
     char *newdir;
     int fdout;
-    char *cleanup_path;
 
-    fdout = maildir_open_tmp_file (ctx, dir, &tmppath, &newpath, &newdir);
+    fdout = maildir_open_tmp_file (ctx, dir, &tmppath, newpath, &newdir);
     if (fdout < 0)
 	return FALSE;
 
-    cleanup_path = tmppath;
-
-    if (! copy_stdin (fdin, fdout))
-	goto FAIL;
+    if (! copy_stdin (fdin, fdout)) {
+	close (fdout);
+	unlink (tmppath);
+	return FALSE;
+    }
 
     if (fsync (fdout) != 0) {
 	fprintf (stderr, "Error: fsync failed: %s\n", strerror (errno));
-	goto FAIL;
+	close (fdout);
+	unlink (tmppath);
+	return FALSE;
     }
 
     close (fdout);
-    fdout = -1;
 
     /* Atomically move the new message file from the Maildir 'tmp' directory
      * to the 'new' directory.  We follow the Dovecot recommendation to
      * simply use rename() instead of link() and unlink().
      * See also: http://wiki.dovecot.org/MailboxFormat/Maildir#Mail_delivery
      */
-    if (rename (tmppath, newpath) != 0) {
+    if (rename (tmppath, *newpath) != 0) {
 	fprintf (stderr, "Error: rename() failed: %s\n", strerror (errno));
-	goto FAIL;
+	unlink (tmppath);
+	return FALSE;
     }
 
-    cleanup_path = newpath;
-
-    if (! sync_dir (newdir))
-	goto FAIL;
-
-    /* Even if adding the message to the notmuch database fails,
-     * the message is on disk and we consider the delivery completed. */
-    add_file_to_database (notmuch, newpath, tag_ops, synchronize_flags);
+    if (! sync_dir (newdir)) {
+	unlink (*newpath);
+	return FALSE;
+    }
 
     return TRUE;
-
-  FAIL:
-    if (fdout >= 0)
-	close (fdout);
-    unlink (cleanup_path);
-    return FALSE;
 }
 
 int
@@ -407,9 +396,9 @@ notmuch_insert_command (notmuch_config_t *config, int argc, char *argv[])
     notmuch_bool_t create_folder = FALSE;
     notmuch_bool_t synchronize_flags;
     const char *maildir;
+    char *newpath;
     int opt_index;
     unsigned int i;
-    notmuch_bool_t ret;
 
     notmuch_opt_desc_t options[] = {
 	{ NOTMUCH_OPT_STRING, &folder, "folder", 0, 0 },
@@ -484,10 +473,18 @@ notmuch_insert_command (notmuch_config_t *config, int argc, char *argv[])
 			       NOTMUCH_DATABASE_MODE_READ_WRITE, &notmuch))
 	return EXIT_FAILURE;
 
-    ret = insert_message (config, notmuch, STDIN_FILENO, maildir, tag_ops,
-			  synchronize_flags);
+    /* Write the message to the Maildir new directory. */
+    if (! write_message (config, STDIN_FILENO, maildir, &newpath)) {
+	notmuch_database_destroy (notmuch);
+	return EXIT_FAILURE;
+    }
 
-    notmuch_database_destroy (notmuch);
+    /* Add the message to the index.
+     * Even if adding the message to the notmuch database fails,
+     * the message is on disk and we consider the delivery completed. */
+    add_file_to_database (notmuch, newpath, tag_ops,
+				    synchronize_flags);
 
-    return ret ? EXIT_SUCCESS : EXIT_FAILURE;
+    notmuch_database_destroy (notmuch);
+    return EXIT_SUCCESS;
 }
-- 
1.8.4