feat(参照标准): 规范资源处理，完善版本编辑

ofdgo_xml.go

@@ -14,6 +14,8 @@
 
 package ofdgo
 
+import "unicode/utf8"
+
 // 旧版与2016版OFD命名空间
 const (
 	ofdNamespaceLegacy = "http://www.ofdspec.org"
@@ -46,3 +48,28 @@ func classifyOFDNamespace(namespace string) ofdXMLNamespace {
 		return ofdXMLUnknown
 	}
 }
+
+// ofdXMLIDValid 按XML 1.0的NCName规则校验xs:ID，不用于数值型ST_ID
+// 入参: id 标识
+// 返回: bool 是否有效
+func ofdXMLIDValid(id string) bool {
+	if id == "" || !utf8.ValidString(id) {
+		return false
+	}
+	for i, c := range id {
+		if c == '_' || c >= 'A' && c <= 'Z' || c >= 'a' && c <= 'z' ||
+			c >= 0xC0 && c <= 0xD6 || c >= 0xD8 && c <= 0xF6 ||
+			c >= 0xF8 && c <= 0x2FF || c >= 0x370 && c <= 0x37D ||
+			c >= 0x37F && c <= 0x1FFF || c >= 0x200C && c <= 0x200D ||
+			c >= 0x2070 && c <= 0x218F || c >= 0x2C00 && c <= 0x2FEF ||
+			c >= 0x3001 && c <= 0xD7FF || c >= 0xF900 && c <= 0xFDCF ||
+			c >= 0xFDF0 && c <= 0xFFFD || c >= 0x10000 && c <= 0xEFFFF {
+			continue
+		}
+		if i == 0 || !(c == '-' || c == '.' || c >= '0' && c <= '9' ||
+			c == 0xB7 || c >= 0x300 && c <= 0x36F || c >= 0x203F && c <= 0x2040) {
+			return false
+		}
+	}
+	return true
+}