コード整理、UniGLTF/Runtime, Editor, Tests

Assets/UniGLTF/Runtime/UniJSON/Utf8String/Utf8StringSplitterExtensions.cs

@@ -0,0 +1,44 @@
+using System;
+
+
+namespace UniJSON
+{
+    public static class Utf8StringSplitterExtensions
+    {
+        /// <summary>
+        /// Split integer from start
+        /// 
+        /// "123 " => "123"
+        /// " 123" => FormatException
+        /// 
+        /// must start +-0123456789
+        /// 
+        /// </summary>
+        /// <param name="src"></param>
+        /// <returns></returns>
+        public static Utf8String SplitInteger(this Utf8String src)
+        {
+            var i = 0;
+            if(src[0]=='+' || src[0] == '-')
+            {
+                ++i;
+            }
+
+            var j = i;
+            for(; j<src.ByteLength; ++j)
+            {
+                if(src[j]<'0' || src[j]>'9')
+                {
+                    break;
+                }
+            }
+
+            if (i == j)
+            {
+                throw new FormatException();
+            }
+
+            return src.Subbytes(0, j);
+        }
+    }
+}