lib/open: add support for config profiles and default locations

[notmuch] / lib / open.cc

diff --git a/lib/open.cc b/lib/open.cc
index 1b17e63a324062a76dc49cfd78e2a4cccd303b5c..2d9c4365b2d38e3d60fee2364813a1f8f12c761f 100644 (file)
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -32,6 +32,95 @@ notmuch_database_open_verbose (const char *path,
                               notmuch_database_mode_t mode,
                               notmuch_database_t **database,
                               char **status_string)
+{
+    return notmuch_database_open_with_config (path, mode, "", NULL,
+                                             database, status_string);
+}
+
+static const char *
+_xdg_dir (void *ctx,
+         const char *xdg_root_variable,
+         const char *xdg_prefix,
+         const char *profile_name)
+{
+    const char *xdg_root = getenv (xdg_root_variable);
+
+    if (! xdg_root) {
+       const char *home = getenv ("HOME");
+
+       if (! home) return NULL;
+
+       xdg_root = talloc_asprintf (ctx,
+                                   "%s/%s",
+                                   home,
+                                   xdg_prefix);
+    }
+
+    if (! profile_name)
+       profile_name = getenv ("NOTMUCH_PROFILE");
+
+    if (! profile_name)
+       profile_name = "default";
+
+    return talloc_asprintf (ctx,
+                           "%s/notmuch/%s",
+                           xdg_root,
+                           profile_name);
+}
+
+static notmuch_status_t
+_load_key_file (const char *path,
+               const char *profile,
+               GKeyFile **key_file)
+{
+    notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
+    void *local = talloc_new (NULL);
+
+    if (path && EMPTY_STRING (path))
+       goto DONE;
+
+    if (! path)
+       path = getenv ("NOTMUCH_CONFIG");
+
+    if (! path) {
+       const char *dir = _xdg_dir (local, "XDG_CONFIG_HOME", ".config", profile);
+
+       if (dir) {
+           path = talloc_asprintf (local, "%s/config", dir);
+           if (access (path, R_OK) !=0)
+               path = NULL;
+       }
+    }
+
+    if (! path) {
+       const char *home = getenv ("HOME");
+
+       path = talloc_asprintf (local, "%s/.notmuch-config", home);
+
+       if (! profile)
+           profile = getenv ("NOTMUCH_PROFILE");
+
+       if (profile)
+           path = talloc_asprintf (local, "%s.%s", path, profile);
+    }
+
+    *key_file = g_key_file_new ();
+    if (! g_key_file_load_from_file (*key_file, path, G_KEY_FILE_NONE, NULL)) {
+       status = NOTMUCH_STATUS_FILE_ERROR;
+    }
+
+DONE:
+    talloc_free (local);
+    return status;
+}
+
+notmuch_status_t
+notmuch_database_open_with_config (const char *database_path,
+                                  notmuch_database_mode_t mode,
+                                  const char *config_path,
+                                  unused(const char *profile),
+                                  notmuch_database_t **database,
+                                  char **status_string)
 {
     notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
     void *local = talloc_new (NULL);
@@ -41,21 +130,31 @@ notmuch_database_open_verbose (const char *path,
     struct stat st;
     int err;
     unsigned int version;
+    GKeyFile *key_file = NULL;
     static int initialized = 0;
 
-    if (path == NULL) {
+    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;
        goto DONE;
     }
 
-    if (path[0] != '/') {
+    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", path, ".notmuch"))) {
+    if (! (notmuch_path = talloc_asprintf (local, "%s/%s", database_path, ".notmuch"))) {
        message = strdup ("Out of memory\n");
        status = NOTMUCH_STATUS_OUT_OF_MEMORY;
        goto DONE;
@@ -89,7 +188,7 @@ notmuch_database_open_verbose (const char *path,
     notmuch = talloc_zero (NULL, notmuch_database_t);
     notmuch->exception_reported = false;
     notmuch->status_string = NULL;
-    notmuch->path = talloc_strdup (notmuch, path);
+    notmuch->path = talloc_strdup (notmuch, database_path);
 
     strip_trailing (notmuch->path, '/');
 
@@ -180,6 +279,16 @@ notmuch_database_open_verbose (const char *path,
        notmuch->query_parser->add_rangeprocessor (notmuch->date_range_processor);
        notmuch->query_parser->add_rangeprocessor (notmuch->last_mod_range_processor);
 
+       /* Configuration information is needed to set up query parser */
+       status = _notmuch_config_load_from_database (notmuch);
+       if (status)
+           goto DONE;
+
+       if (key_file)
+           status = _notmuch_config_load_from_file (notmuch, key_file);
+       if (status)
+           goto DONE;
+
        status = _notmuch_database_setup_standard_query_fields (notmuch);
        if (status)
            goto DONE;