[PATCH 28/38] lib/open: factor out first part of open

The plan is to share code with a new database creation function that
has a similar API to n_d_open_with_config.
---
 lib/open.cc | 50 +++++++++++++++++++++++++++++++-------------------
 1 file changed, 31 insertions(+), 19 deletions(-)

diff --git a/lib/open.cc b/lib/open.cc
index 8cede121..07498dec 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -113,6 +113,36 @@ DONE:
     return status;
 }
 
+static notmuch_status_t
+_pre_open(const char *config_path,
+         const char *profile,
+         GKeyFile **key_file,
+         const char **database_path,
+         char **message)
+{
+    notmuch_status_t status;
+
+    status =_load_key_file (config_path, profile, key_file);
+    if (status) {
+       *message = strdup ("Error: cannot load config file.\n");
+       return status;
+    }
+
+    if (! *database_path && *key_file)
+       *database_path = g_key_file_get_value (*key_file, "database", "path", 
NULL);
+
+    if (*database_path == NULL) {
+       *message = strdup ("Error: Cannot open a database for a NULL path.\n");
+       return NOTMUCH_STATUS_NULL_POINTER;
+    }
+
+    if (*database_path[0] != '/') {
+       *message = strdup ("Error: Database path must be absolute.\n");
+       return NOTMUCH_STATUS_PATH_ERROR;
+    }
+    return NOTMUCH_STATUS_SUCCESS;
+}
+
 notmuch_status_t
 notmuch_database_open_with_config (const char *database_path,
                                   notmuch_database_mode_t mode,
@@ -132,26 +162,8 @@ notmuch_database_open_with_config (const char 
*database_path,
     GKeyFile *key_file = NULL;
     static int initialized = 0;
 
-    status = _load_key_file (config_path, profile, &key_file);
-    if (status) {
-       message = strdup ("Error: cannot load config file");
-       goto DONE;
-    }
-       
-    if (! database_path && key_file)
-       database_path = g_key_file_get_value (key_file, "database", "path", 
NULL);
-
-    if (database_path == NULL) {
-       message = strdup ("Error: Cannot open a database for a NULL path.\n");
-       status = NOTMUCH_STATUS_NULL_POINTER;
+    if ((status = _pre_open (config_path, profile, &key_file, &database_path, 
&message)))
        goto DONE;
-    }
-
-    if (database_path[0] != '/') {
-       message = strdup ("Error: Database path must be absolute.\n");
-       status = NOTMUCH_STATUS_PATH_ERROR;
-       goto DONE;
-    }
 
     if (! (notmuch_path = talloc_asprintf (local, "%s/%s", database_path, 
".notmuch"))) {
        message = strdup ("Out of memory\n");
-- 
2.29.2
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