/// <summary>
/// Escapes a substring to the given string builder.
/// </summary>
static public void Escape(string inString, int inStartIndex, int inLength, StringBuilder ioBuilder, ICustomEscapeEvaluator inCustomEscape = null)
{
if (inString == null || inLength <= 0)
{
return;
}
if (inStartIndex < 0 || inStartIndex >= inString.Length)
{
throw new ArgumentOutOfRangeException("Starting index is out of range");
}
if (inStartIndex + inLength > inString.Length)
{
throw new ArgumentOutOfRangeException("Length extends beyond end of string");
}
for (int idx = 0; idx < inLength; ++idx)
{
int realIdx = inStartIndex + idx;
char c = inString[realIdx];
if (inCustomEscape != null)
{
if (inCustomEscape.TryEscape(c, ioBuilder))
{
continue;
}
}
switch (c)
{
case '\\':
ioBuilder.Append("\\\\");
break;
case '\"':
ioBuilder.Append("\\\"");
break;
case '\0':
ioBuilder.Append("\\0");
break;
case '\a':
ioBuilder.Append("\\a");
break;
case '\v':
ioBuilder.Append("\\v");
break;
case '\t':
ioBuilder.Append("\\t");
break;
case '\b':
ioBuilder.Append("\\b");
break;
case '\f':
ioBuilder.Append("\\f");
break;
case '\n':
ioBuilder.Append("\\n");
break;
default:
ioBuilder.Append(c);
break;
}
}
}
