/// <summary>
/// Serializes the string to a CSS string.
/// </summary>
/// <param name="value">The value to serialize.</param>
/// <returns>The CSS string representation.</returns>
public static String CssString(this String value)
{
var builder = StringBuilderPool.Obtain();
builder.Append(Symbols.DoubleQuote);
if (!String.IsNullOrEmpty(value))
{
for (var i = 0; i < value.Length; i++)
{
var character = value[i];
if (character == Symbols.Null)
{
builder.ReturnToPool();
throw new DomException(DomError.InvalidCharacter);
}
if (character == Symbols.DoubleQuote || character == Symbols.ReverseSolidus)
{
builder.Append(Symbols.ReverseSolidus).Append(character);
}
else if (character.IsInRange(0x1, 0x1f) || character == (Char)0x7b)
{
builder.Append(Symbols.ReverseSolidus).Append(character.ToHex()).Append(i + 1 != value.Length ? " " : "");
}
else
{
builder.Append(character);
}
}
}
builder.Append(Symbols.DoubleQuote);
return(builder.ToPool());
}
/// <summary>
/// Replaces characters in names and values that should not be in URL
/// values. Replaces the bytes 0x20 (U+0020 SPACE if interpreted as
/// ASCII) with a single 0x2B byte ("+" (U+002B) character if
/// interpreted as ASCII). If a byte is not in the range 0x2A, 0x2D,
/// 0x2E, 0x30 to 0x39, 0x41 to 0x5A, 0x5F, 0x61 to 0x7A, it is
/// replaced with its hexadecimal value (zero-padded if necessary),
/// starting with the percent sign.
/// </summary>
/// <param name="content">The content to encode.</param>
/// <returns>The encoded value.</returns>
public static String UrlEncode(this Byte[] content)
{
var builder = StringBuilderPool.Obtain();
for (var i = 0; i < content.Length; i++)
{
var chr = (Char)content[i];
if (chr == Symbols.Space)
{
builder.Append(Symbols.Plus);
}
else if (chr == Symbols.Asterisk || chr == Symbols.Minus || chr == Symbols.Dot || chr == Symbols.Underscore || chr == Symbols.Tilde || chr.IsAlphanumericAscii())
{
builder.Append(chr);
}
else
{
builder.Append(Symbols.Percent).Append(content[i].ToString("X2"));
}
}
return(builder.ToPool());
}
