fill WFObj::loadfile(), add Buffer allocation

WFObj.cc

@@ -415,7 +415,22 @@ void WFObj::loadMaterial(const std::string & name)
 
 bool WFObj::loadfile(const char *path, Buffer *buff)
 {
-    /* TODO */
+    struct stat st;
+
+    if ( (stat(path, &st) == 0) && (st.st_size > 0) )
+    {
+        int fd = open(path, O_RDONLY);
+        if (fd > 0)
+        {
+            buff->alloc(st.st_size);
+            int num_read = read(fd, buff->data, st.st_size);
+            close(fd);
+            if (num_read > 0)
+                return true;
+        }
+    }
+
+    return false;
 }
 
 bool WFObj::VertexRef::operator<(const VertexRef & other)

WFObj.h

@@ -14,8 +14,18 @@ public:
     class Buffer
     {
         public:
+            Buffer() : m_alloc(false) {}
+            ~Buffer() { if (m_alloc) delete data; }
             uint8_t *data;
             size_t length;
+            void alloc(size_t sz)
+            {
+                length = sz;
+                data = new uint8_t[sz];
+                m_alloc = true;
+            }
+        protected:
+            bool m_alloc;
     };
 
     typedef bool (*loadfile_t)(const char *fname, Buffer *buff);