// this method is ugly, and does a lot. but other breakups cause rescanning and stringbuilder generations
internal static void Escape(StringBuilder accum, string @string, EscapeMode escapeMode, Encoding charset, bool inAttribute, bool normaliseWhite, bool stripLeadingWhite)
{
bool lastWasWhite = false;
bool reachedNonWhite = false;
CharsetEncoder encoder = new CharsetEncoder(charset);
IDictionary<Utf32, string> map = GetMap(escapeMode);
int length = @string.Length;
char c = default(char);
for (int offset = 0; offset < length; offset += (char.IsSurrogate(c) ? 2 : 1))
{
c = @string[offset];
if (normaliseWhite)
{
if (StringUtil.IsWhitespace(c))
{
if ((stripLeadingWhite && !reachedNonWhite) || lastWasWhite)
{
continue;
}
accum.Append(' ');
lastWasWhite = true;
continue;
}
else
{
lastWasWhite = false;
reachedNonWhite = true;
}
}
if (!char.IsSurrogate(c))
{
// split implementation for efficiency on single char common case (saves creating strings, char[]):
switch (c)
{
case '&':
// html specific and required escapes:
accum.Append("&");
continue;
case '\u00A0':
if (escapeMode != EscapeMode.Xhtml)
{
accum.Append(" ");
}
else
{
accum.Append(c);
}
continue;
case '<':
if (!inAttribute)
{
accum.Append("<");
}
else
{
accum.Append(c);
}
continue;
case '>':
if (!inAttribute)
{
accum.Append(">");
}
else
{
accum.Append(c);
}
continue;
case '"':
if (inAttribute)
{
accum.Append(""");
}
else
{
accum.Append(c);
}
continue;
default:
break;
}
}
var chars = char.IsSurrogate(c)
? new[] { c, @string[offset + 1] }
: new[] { c };
if (encoder.CanEncode(chars))
{
accum.Append(chars);
continue;
}
Utf32 codePoint = char.ConvertToUtf32(@string, offset);
if (map.ContainsKey(codePoint))
{
accum.Append('&').Append(map[codePoint]).Append(';');
}
else
{
accum.Append("&#x").AppendFormat("{0:x}", codePoint).Append(';');
}
}
}
// this method is ugly, and does a lot. but other breakups cause rescanning and stringbuilder generations
internal static void Escape(StringBuilder accum, string @string, EscapeMode escapeMode, Encoding charset, bool inAttribute, bool normaliseWhite, bool stripLeadingWhite)
{
bool lastWasWhite = false;
bool reachedNonWhite = false;
CharsetEncoder encoder = new CharsetEncoder(charset);
IDictionary <Utf32, string> map = GetMap(escapeMode);
int length = @string.Length;
char c = default(char);
for (int offset = 0; offset < length; offset += (char.IsSurrogate(c) ? 2 : 1))
{
c = @string[offset];
if (normaliseWhite)
{
if (StringUtil.IsWhitespace(c))
{
if ((stripLeadingWhite && !reachedNonWhite) || lastWasWhite)
{
continue;
}
accum.Append(' ');
lastWasWhite = true;
continue;
}
else
{
lastWasWhite = false;
reachedNonWhite = true;
}
}
if (!char.IsSurrogate(c))
{
// split implementation for efficiency on single char common case (saves creating strings, char[]):
switch (c)
{
case '&':
// html specific and required escapes:
accum.Append("&");
continue;
case '\u00A0':
if (escapeMode != EscapeMode.Xhtml)
{
accum.Append(" ");
}
else
{
accum.Append(c);
}
continue;
case '<':
if (!inAttribute)
{
accum.Append("<");
}
else
{
accum.Append(c);
}
continue;
case '>':
if (!inAttribute)
{
accum.Append(">");
}
else
{
accum.Append(c);
}
continue;
case '"':
if (inAttribute)
{
accum.Append(""");
}
else
{
accum.Append(c);
}
continue;
default:
break;
}
}
var chars = char.IsSurrogate(c)
? new[] { c, @string[offset + 1] }
: new[] { c };
if (encoder.CanEncode(chars))
{
accum.Append(chars);
continue;
}
Utf32 codePoint = char.ConvertToUtf32(@string, offset);
if (map.ContainsKey(codePoint))
{
accum.Append('&').Append(map[codePoint]).Append(';');
}
else
{
accum.Append("&#x").AppendFormat("{0:x}", codePoint).Append(';');
}
}
}
