lib/open: support XDG_DATA_HOME as a fallback database location.

[notmuch] / lib / open.cc

diff --git a/lib/open.cc b/lib/open.cc
index 3bb3e1034e3d7fb1ebb4c1b5d51603e308eb436d..25691a8ac6df76de11ad024d701d474d393cdae9 100644 (file)
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -181,6 +181,7 @@ _choose_database_path (void *ctx,
                       const char *profile,
                       GKeyFile **key_file,
                       const char **database_path,
+                      bool *split,
                       char **message)
 {
     notmuch_status_t status;
@@ -203,6 +204,11 @@ _choose_database_path (void *ctx,
        }
     }
 
+    if (! *database_path) {
+       *database_path = _xdg_dir (ctx, "XDG_DATA_HOME", ".local/share", profile);
+       *split = true;
+    }
+
     if (*database_path == NULL) {
        *message = strdup ("Error: Cannot open a database for a NULL path.\n");
        return NOTMUCH_STATUS_NULL_POINTER;
@@ -263,6 +269,11 @@ _choose_xapian_path (void *ctx, const char *database_path, const char **xapian_p
     if (status)
        goto DONE;
 
+    trial_path = talloc_asprintf (ctx, "%s/xapian", database_path);
+    status = _trial_open (trial_path, message_ptr);
+    if (status != NOTMUCH_STATUS_PATH_ERROR)
+       goto DONE;
+
     notmuch_path = talloc_asprintf (ctx, "%s/.notmuch", database_path);
     status = _db_dir_exists (notmuch_path, message_ptr);
     if (status)
@@ -457,6 +468,7 @@ notmuch_database_open_with_config (const char *database_path,
     notmuch_database_t *notmuch = NULL;
     char *message = NULL;
     GKeyFile *key_file = NULL;
+    bool split = false;
 
     _init_libs ();
 
@@ -466,7 +478,8 @@ notmuch_database_open_with_config (const char *database_path,
        goto DONE;
     }
 
-    if ((status = _choose_database_path (local, config_path, profile, &key_file, &database_path,
+    if ((status = _choose_database_path (local, config_path, profile,
+                                        &key_file, &database_path, &split,
                                         &message)))
        goto DONE;
 
@@ -540,11 +553,12 @@ notmuch_database_create_with_config (const char *database_path,
 {
     notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
     notmuch_database_t *notmuch = NULL;
-    char *notmuch_path = NULL;
+    const char *notmuch_path = NULL;
     char *message = NULL;
     GKeyFile *key_file = NULL;
     void *local = talloc_new (NULL);
     int err;
+    bool split = false;
 
     _init_libs ();
 
@@ -557,7 +571,8 @@ notmuch_database_create_with_config (const char *database_path,
     _init_libs ();
 
     if ((status = _choose_database_path (local, config_path, profile,
-                                        &key_file, &database_path, &message)))
+                                        &key_file, &database_path, &split,
+                                        &message)))
        goto DONE;
 
     status = _db_dir_exists (database_path, &message);
@@ -566,20 +581,38 @@ notmuch_database_create_with_config (const char *database_path,
 
     _set_database_path (notmuch, database_path);
 
-    notmuch_path = talloc_asprintf (local, "%s/%s", database_path, ".notmuch");
+    if (key_file && ! split) {
+       char *mail_root = canonicalize_file_name (
+           g_key_file_get_value (key_file, "database", "mail_root", NULL));
+       char *db_path = canonicalize_file_name (database_path);
 
-    err = mkdir (notmuch_path, 0755);
-    if (err) {
-       if (errno == EEXIST) {
-           status = NOTMUCH_STATUS_DATABASE_EXISTS;
-           talloc_free (notmuch);
-           notmuch = NULL;
-       } else {
-           IGNORE_RESULT (asprintf (&message, "Error: Cannot create directory %s: %s.\n",
-                                    notmuch_path, strerror (errno)));
-           status = NOTMUCH_STATUS_FILE_ERROR;
+       split = (mail_root && (0 != strcmp (mail_root, db_path)));
+
+       free (mail_root);
+       free (db_path);
+    }
+
+    if (split) {
+       notmuch_path = database_path;
+    } else {
+       if (! (notmuch_path = talloc_asprintf (local, "%s/%s", database_path, ".notmuch"))) {
+           status = NOTMUCH_STATUS_OUT_OF_MEMORY;
+           goto DONE;
+       }
+
+       err = mkdir (notmuch_path, 0755);
+       if (err) {
+           if (errno == EEXIST) {
+               status = NOTMUCH_STATUS_DATABASE_EXISTS;
+               talloc_free (notmuch);
+               notmuch = NULL;
+           } else {
+               IGNORE_RESULT (asprintf (&message, "Error: Cannot create directory %s: %s.\n",
+                                        notmuch_path, strerror (errno)));
+               status = NOTMUCH_STATUS_FILE_ERROR;
+           }
+           goto DONE;
        }
-       goto DONE;
     }
 
     if (! (notmuch->xapian_path = talloc_asprintf (notmuch, "%s/%s", notmuch_path, "xapian"))) {
@@ -587,6 +620,14 @@ notmuch_database_create_with_config (const char *database_path,
        goto DONE;
     }
 
+    status = _trial_open (notmuch->xapian_path, &message);
+    if (status == NOTMUCH_STATUS_SUCCESS) {
+       notmuch_database_destroy (notmuch);
+       notmuch = NULL;
+       status = NOTMUCH_STATUS_DATABASE_EXISTS;
+       goto DONE;
+    }
+
     status = _finish_open (notmuch,
                           profile,
                           NOTMUCH_DATABASE_MODE_READ_WRITE,