public static ICharSequence GetCharsetAsSequence(ICharSequence contentTypeValue)
{
if (contentTypeValue is null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.contentTypeValue);
}
int indexOfCharset = AsciiString.IndexOfIgnoreCaseAscii(contentTypeValue, CharsetEquals, 0);
if ((uint)indexOfCharset >= NIndexNotFound)
{
return(null);
}
int indexOfEncoding = indexOfCharset + CharsetEquals.Count;
if (indexOfEncoding < contentTypeValue.Count)
{
var charsetCandidate = contentTypeValue.SubSequence(indexOfEncoding, contentTypeValue.Count);
int indexOfSemicolon = AsciiString.IndexOfIgnoreCaseAscii(charsetCandidate, Semicolon, 0);
if ((uint)indexOfSemicolon >= NIndexNotFound)
{
return(charsetCandidate);
}
return(charsetCandidate.SubSequence(0, indexOfSemicolon));
}
return(null);
}
public void IndexOfIgnoreCaseAscii()
{
Assert.Equal(-1, AsciiString.IndexOfIgnoreCaseAscii(null, (AsciiString)"abc", 1));
Assert.Equal(-1, AsciiString.IndexOfIgnoreCaseAscii((AsciiString)"abc", null, 1));
Assert.Equal(0, AsciiString.IndexOfIgnoreCaseAscii((AsciiString)"", (StringCharSequence)"", 0));
Assert.Equal(0, AsciiString.IndexOfIgnoreCaseAscii((StringCharSequence)"aabaabaa", (AsciiString)"A", 0));
Assert.Equal(2, AsciiString.IndexOfIgnoreCaseAscii((AsciiString)"aabaabaa", (StringCharSequence)"B", 0));
Assert.Equal(1, AsciiString.IndexOfIgnoreCaseAscii((StringCharSequence)"aabaabaa", (StringCharSequence)"AB", 0));
Assert.Equal(5, AsciiString.IndexOfIgnoreCaseAscii((StringCharSequence)"aabaabaa", (AsciiString)"B", 3));
Assert.Equal(-1, AsciiString.IndexOfIgnoreCaseAscii((AsciiString)"aabaabaa", (StringCharSequence)"B", 9));
Assert.Equal(2, AsciiString.IndexOfIgnoreCaseAscii((AsciiString)"aabaabaa", new AsciiString("B"), -1));
Assert.Equal(2, AsciiString.IndexOfIgnoreCaseAscii((StringCharSequence)"aabaabaa", (AsciiString)"", 2));
Assert.Equal(-1, AsciiString.IndexOfIgnoreCaseAscii((AsciiString)"abc", (StringCharSequence)"", 9));
}
public static ICharSequence GetMimeType(ICharSequence contentTypeValue)
{
if (contentTypeValue is null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.contentTypeValue);
}
int indexOfSemicolon = AsciiString.IndexOfIgnoreCaseAscii(contentTypeValue, Semicolon, 0);
if ((uint)indexOfSemicolon < NIndexNotFound)
{
return(contentTypeValue.SubSequence(0, indexOfSemicolon));
}
return((uint)contentTypeValue.Count > 0u ? contentTypeValue : null);
}
public static ICharSequence GetMimeType(ICharSequence contentTypeValue)
{
if (contentTypeValue == null)
{
throw new ArgumentException(nameof(contentTypeValue));
}
int indexOfSemicolon = AsciiString.IndexOfIgnoreCaseAscii(contentTypeValue, Semicolon, 0);
if (indexOfSemicolon != AsciiString.IndexNotFound)
{
return(contentTypeValue.SubSequence(0, indexOfSemicolon));
}
return(contentTypeValue.Count > 0 ? contentTypeValue : null);
}
public static ICharSequence GetCharsetAsSequence(ICharSequence contentTypeValue)
{
if (contentTypeValue == null)
{
throw new ArgumentException(nameof(contentTypeValue));
}
int indexOfCharset = AsciiString.IndexOfIgnoreCaseAscii(contentTypeValue, CharsetEquals, 0);
if (indexOfCharset != AsciiString.IndexNotFound)
{
int indexOfEncoding = indexOfCharset + CharsetEquals.Count;
if (indexOfEncoding < contentTypeValue.Count)
{
return(contentTypeValue.SubSequence(indexOfEncoding, contentTypeValue.Count));
}
}
return(null);
}