} // 是否为虚拟值形态。所谓虚拟值就是最外面被 {} 括住
public static OldNewValue Parse(string strValue)
{
bool bVirtual = strValue.StartsWith("{");
if (bVirtual == true)
{
strValue = StringUtil.Unquote(strValue, "{}");
}
dp2StringUtil.ParseOldNewValue(strValue,
out string strOldValue,
out string strNewValue);
return(new OldNewValue {
OldValue = strOldValue, NewValue = strNewValue, IsVirtual = bVirtual
});
}
// 能处理 {} 的版本
public static string LinkOldNewValueVirtual(string strOldValue,
string strNewValue)
{
if (String.IsNullOrEmpty(strNewValue) == true)
{
return(strOldValue);
}
bool new_virtual = false;
if (strNewValue.StartsWith("{"))
{
strNewValue = StringUtil.Unquote(strNewValue, "{}");
new_virtual = true;
}
bool old_virtual = false;
if (string.IsNullOrEmpty(strOldValue) == false &&
strOldValue.StartsWith("{"))
{
strOldValue = StringUtil.Unquote(strOldValue, "{}");
old_virtual = true;
}
if (strOldValue == strNewValue)
{
if (String.IsNullOrEmpty(strOldValue) == true) // 新旧均为空
{
return("");
}
if (new_virtual || old_virtual)
{
return("{" + strOldValue + "[=]}");
}
return(strOldValue + "[=]");
}
if (new_virtual || old_virtual)
{
return("{" + strOldValue + "[" + strNewValue + "]}");
}
return(strOldValue + "[" + strNewValue + "]");
}