/// <summary>
/// Unscape all symbols for given type
/// </summary>
/// <param name="str"></param>
/// <param name="type"></param>
/// <returns></returns>
public static String Unescape(this String str, EscapingType type)
{
IEscapeProvider d = EscapingDataFactory.Get(type);
StringBuilder res = new StringBuilder(str.Length);
int offset = 0;
foreach (var i in d.GetFirst())
{
if (str.StartsWith(i.Value))
{
res.Append(i.Key);
offset = i.Value.Length;
break;
}
}
for (int i = offset; i < str.Length; i++)
{
String s = CheckSuffix(str, offset, i, d);
if (s != null)
{
res.Append(s);
offset = i + 1;
}
}
return(res + str.Substring(offset));
}
/// <summary>
///
/// </summary>
/// <param name="c"></param>
/// <param name="type"></param>
/// <param name="first"></param>
/// <returns></returns>
public static bool IsLiteral(this char c, EscapingType type, bool first = false)
{
IEscapeProvider d = EscapingDataFactory.Get(type);
return(!(first && d.GetFirst().ContainsKey(c) ||
d.GetCommon().ContainsKey(c) ||
d.NeedEscapeUnicode(c)));
}
private static String EscapeFirst(char c, IEscapeProvider d)
{
String r;
if (d.GetFirst().TryGetValue(c, out r))
{
return(r);
}
return(EscapeCommon(c, d));
}
/// <summary>
///
/// </summary>
/// <param name="str"></param>
/// <param name="type"></param>
/// <returns></returns>
public static bool IsLiteral(this String str, EscapingType type)
{
IEscapeProvider d = EscapingDataFactory.Get(type);
if (d.GetFirst().ContainsKey(str[0]))
{
return(false);
}
foreach (char c in str)
{
if (d.GetCommon().ContainsKey(c))
{
return(false);
}
}
return(true);
}
private static String EscapeFirst(char c, IEscapeProvider d)
{
String r;
if (d.GetFirst().TryGetValue(c, out r))
return r;
return EscapeCommon(c, d);
}
