[Libosinfo] [PATCHv4 07/11] OsinfoInstallConfig: Use config-params if set

[Christophe Fergeau]

Now that OsinfoInstallConfig has a 'config-params' property
which describes the config parameters when it's set, we can
use it when it's available. OsinfoInstallConfigParams can indeed
contain a datamap to be used to translate generic libosinfo values
to OS-specific values.
This commit introduces an osinfo_install_config_get_param_value_list
method that will be used in subsequent commits to get these
OS-specific values when generating install scripts.
---
 osinfo/osinfo_install_config.c         | 84 ++++++++++++++++++++++++++++++++++
 osinfo/osinfo_install_config_private.h |  1 +
 2 files changed, 85 insertions(+)

diff --git a/osinfo/osinfo_install_config.c b/osinfo/osinfo_install_config.c
index a77317b..4c42746 100644
--- a/osinfo/osinfo_install_config.c
+++ b/osinfo/osinfo_install_config.c
@@ -737,6 +737,90 @@ OsinfoInstallConfigParamList *osinfo_install_config_get_config_params(OsinfoInst
     return config->priv->config_params;
 }
 
+
+static const gchar *
+osinfo_install_config_transform_value(OsinfoInstallConfig *config,
+                                      const gchar *key,
+                                      const gchar *value)
+{
+    OsinfoDatamap *map;
+    OsinfoEntity *entity;
+    OsinfoInstallConfigParam *param;
+    const gchar *transformed_value;
+
+    if (!config->priv->config_params)
+        return value;
+
+    entity = osinfo_list_find_by_id(OSINFO_LIST(config->priv->config_params),
+                                    key);
+    if (entity == NULL) {
+        g_warning("%s is not a known parameter for this config", key);
+        return value;
+    }
+
+    param = OSINFO_INSTALL_CONFIG_PARAM(entity);;
+    map = osinfo_install_config_param_get_value_map(param);
+    if (map == NULL) {
+        g_debug("no remapping to be done for %s", key);
+        return value;
+    }
+    transformed_value = osinfo_datamap_lookup(map, value);
+    if (transformed_value == NULL) {
+        g_warning("value not present in %s datamap: %s", key, value);
+        return value;
+    }
+
+    return transformed_value;
+}
+
+static GHashTable *get_remapped_keys_once(void)
+{
+    const char *remapped_properties[] = {
+        OSINFO_INSTALL_CONFIG_PROP_HARDWARE_ARCH,
+        OSINFO_INSTALL_CONFIG_PROP_L10N_KEYBOARD,
+        OSINFO_INSTALL_CONFIG_PROP_L10N_LANGUAGE,
+        OSINFO_INSTALL_CONFIG_PROP_L10N_TIMEZONE,
+        NULL
+    };
+    const char **it;
+    GHashTable *remapped_keys;
+
+    remapped_keys = g_hash_table_new(g_str_hash, g_str_equal);
+    for (it = remapped_properties; *it != NULL; it++) {
+        g_hash_table_add(remapped_keys, (gpointer)*it);
+    }
+
+    return remapped_keys;
+}
+
+GList *
+osinfo_install_config_get_param_value_list(OsinfoInstallConfig *config,
+                                           const gchar *key)
+{
+    GList *values;
+    GList *it;
+    static GOnce remapped_keys_once = G_ONCE_INIT;
+    GHashTable *remapped_keys;
+
+    values = osinfo_entity_get_param_value_list(OSINFO_ENTITY(config), key);
+    if (values == NULL)
+        return NULL;
+
+    remapped_keys = g_once(&remapped_keys_once,
+                           (GThreadFunc)get_remapped_keys_once,
+                           NULL);
+    if (!g_hash_table_contains(remapped_keys, key))
+        return values;
+
+    for (it = values; it != NULL; it = it->next) {
+        it->data = (gpointer)osinfo_install_config_transform_value(config,
+                                                                   key,
+                                                                   it->data);
+    }
+
+    return values;
+}
+
 /*
  * Local variables:
  *  indent-tabs-mode: nil
diff --git a/osinfo/osinfo_install_config_private.h b/osinfo/osinfo_install_config_private.h
index 5a1edd3..5ad2162 100644
--- a/osinfo/osinfo_install_config_private.h
+++ b/osinfo/osinfo_install_config_private.h
@@ -28,6 +28,7 @@
 
 void osinfo_install_config_set_config_params(OsinfoInstallConfig *config,
                                              OsinfoInstallConfigParamList *config_params);
+GList *osinfo_install_config_get_param_value_list(OsinfoInstallConfig *config, const gchar *key);
 
 #endif /* __OSINFO_INSTALL_CONFIG_PRIVATE_H__ */
 /*
-- 
1.8.0.2