feat(xml): add the basics of declarative XML support

src/others/xml/lv_xml_widget.c

@@ -0,0 +1,78 @@
+/**
+ * @file lv_xml_widget.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_xml_widget.h"
+#include "lv_xml_parser.h"
+#include "../../stdlib/lv_string.h"
+#include "../../stdlib/lv_mem.h"
+
+#if LV_USE_XML
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+static lv_widget_processor_t * widget_processor_head;
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+lv_result_t lv_xml_widget_register(const char * name, lv_xml_widget_create_cb_t create_cb,
+                                   lv_xml_widget_apply_cb_t apply_cb)
+{
+    lv_widget_processor_t * p = lv_malloc(sizeof(lv_widget_processor_t));
+    lv_memzero(p, sizeof(lv_widget_processor_t));
+
+    p->name = lv_strdup(name);
+    p->create_cb = create_cb;
+    p->apply_cb = apply_cb;
+
+    if(widget_processor_head == NULL) widget_processor_head = p;
+    else {
+        p->next = widget_processor_head;
+        widget_processor_head = p;
+    }
+    return LV_RESULT_OK;
+}
+
+lv_widget_processor_t * lv_xml_widget_get_processor(const char * name)
+{
+    /* Select the widget specific parser type based on the name */
+    lv_widget_processor_t * p = widget_processor_head;
+    while(p) {
+        if(lv_streq(p->name, name)) {
+            return p;
+        }
+
+        p = p->next;
+    }
+    return NULL;
+}
+
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+#endif /* LV_USE_XML */