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authorHyungKyu Song <hk76.song@samsung.com>2013-02-16 00:11:35 +0900
committerHyungKyu Song <hk76.song@samsung.com>2013-02-16 00:11:35 +0900
commitb32dea69029f492083f2b11f3a087300ddb2b9e0 (patch)
treecc97cc634e3234446670bc6c7d455bd1be5dd806 /src/engine.c
parentc3875cbe2f8e945b837a76ac5f8e6d57bde940bb (diff)
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Diffstat (limited to 'src/engine.c')
-rwxr-xr-xsrc/engine.c128
1 files changed, 128 insertions, 0 deletions
diff --git a/src/engine.c b/src/engine.c
new file mode 100755
index 0000000..3dcdb11
--- /dev/null
+++ b/src/engine.c
@@ -0,0 +1,128 @@
+/*
+ * UI Gadget
+ *
+ * Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd. All rights reserved.
+ *
+ * Contact: Jayoun Lee <airjany@samsung.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <linux/limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <dlfcn.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+#include "ug-engine.h"
+#include "ug-dbg.h"
+
+#define UG_ENGINE_INIT_SYM "UG_ENGINE_INIT"
+#define UG_ENGINE_EXIT_SYM "UG_ENGINE_EXIT"
+
+enum ug_engine_type {
+ UG_ENGINE_EFL = 0x00,
+};
+
+static int file_exist(const char *filename)
+{
+ FILE *file;
+
+ file = fopen(filename, "r");
+ if (file)
+ {
+ fclose(file);
+ return 0;
+ }
+ return -1;
+}
+
+struct ug_engine *ug_engine_load()
+{
+ void *handle;
+ struct ug_engine *engine;
+ char engine_file[PATH_MAX];
+ enum ug_engine_type type = UG_ENGINE_EFL;
+ int (*engine_init)(struct ug_engine_ops *ops);
+
+ engine = calloc(1, sizeof(struct ug_engine));
+
+ if (!engine) {
+ errno = ENOMEM;
+ return NULL;
+ }
+
+ if (type == UG_ENGINE_EFL) { /* UG_ENGINE_EFL is default*/
+ if (snprintf(engine_file, PATH_MAX, "/usr/lib/libui-gadget-1-efl-engine.so") < 0){
+ goto engine_free;
+ }
+ else if (file_exist(engine_file) < 0) {
+ goto engine_free;
+ }
+ }
+ else
+ goto engine_free;
+
+ handle = dlopen(engine_file, RTLD_LAZY);
+ if (!handle) {
+ _ERR("dlopen failed: %s", dlerror());
+ goto engine_free;
+ }
+
+ engine_init = dlsym(handle, UG_ENGINE_INIT_SYM);
+ if (!engine_init) {
+ _ERR("dlsym failed: %s", dlerror());
+ goto engine_dlclose;
+ }
+
+ if (engine_init(&engine->ops))
+ goto engine_dlclose;
+
+ engine->handle = handle;
+ return engine;
+
+engine_dlclose:
+ dlclose(handle);
+
+engine_free:
+ free(engine);
+ return NULL;
+}
+
+int ug_engine_unload(struct ug_engine *engine)
+{
+ void (*engine_exit)(struct ug_engine_ops *ops);
+
+ if (!engine) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (engine->handle) {
+ engine_exit = dlsym(engine->handle, UG_ENGINE_EXIT_SYM);
+ if (engine_exit)
+ engine_exit(&engine->ops);
+ else
+ _ERR("dlsym failed: %s", dlerror());
+
+ dlclose(engine->handle);
+ }
+
+ free(engine);
+ engine = NULL;
+ return 0;
+}