public static bool HasFileContentDisposition(ContentDispositionHeaderValue?contentDisposition)
{
// Content-Disposition: form-data; name="myfile1"; filename="Misc 002.jpg"
return(contentDisposition != null &&
contentDisposition.DispositionType.Equals("form-data") &&
(!string.IsNullOrEmpty(contentDisposition.FileName.Value) ||
!string.IsNullOrEmpty(contentDisposition.FileNameStar.Value)));
}
public static bool HasFormDataContentDisposition(ContentDispositionHeaderValue?contentDisposition)
{
// Content-Disposition: form-data; name="key";
return(contentDisposition != null &&
contentDisposition.DispositionType.Equals("form-data") &&
string.IsNullOrEmpty(contentDisposition.FileName.Value) &&
string.IsNullOrEmpty(contentDisposition.FileNameStar.Value));
}
/// <summary>
/// Creates a new instance of the <see cref="FormMultipartSection"/> class
/// </summary>
/// <param name="section">The section from which to create the <see cref="FormMultipartSection"/></param>
/// <param name="header">An already parsed content disposition header</param>
public FormMultipartSection(MultipartSection section, ContentDispositionHeaderValue?header)
{
if (header == null || !header.IsFormDisposition())
{
throw new ArgumentException("Argument must be a form section", nameof(section));
}
Section = section;
_contentDispositionHeader = header;
Name = HeaderUtilities.RemoveQuotes(_contentDispositionHeader.Name).ToString();
}
public override bool Equals([NotNullWhen(true)] object?obj)
{
ContentDispositionHeaderValue?other = obj as ContentDispositionHeaderValue;
if (other == null)
{
return(false);
}
return(string.Equals(_dispositionType, other._dispositionType, StringComparison.OrdinalIgnoreCase) &&
HeaderUtilities.AreEqualCollections(_parameters, other._parameters));
}
public static bool TryParse([NotNullWhen(true)] string?input, [NotNullWhen(true)] out ContentDispositionHeaderValue?parsedValue)
{
int index = 0;
parsedValue = null;
if (GenericHeaderParser.ContentDispositionParser.TryParseValue(input, null, ref index, out object?output))
{
parsedValue = (ContentDispositionHeaderValue)output !;
return(true);
}
return(false);
}
/// <summary>
/// Creates a new instance of the <see cref="FileMultipartSection"/> class
/// </summary>
/// <param name="section">The section from which to create the <see cref="FileMultipartSection"/></param>
/// <param name="header">An already parsed content disposition header</param>
public FileMultipartSection(MultipartSection section, ContentDispositionHeaderValue?header)
{
if (header is null || !header.IsFileDisposition())
{
throw new ArgumentException("Argument must be a file section", nameof(section));
}
Section = section;
_contentDispositionHeader = header;
Name = HeaderUtilities.RemoveQuotes(_contentDispositionHeader.Name).ToString();
FileName = HeaderUtilities.RemoveQuotes(
_contentDispositionHeader.FileNameStar.HasValue ?
_contentDispositionHeader.FileNameStar :
_contentDispositionHeader.FileName).ToString();
}
private static int GetDispositionTypeLength(StringSegment input, int startIndex, out ContentDispositionHeaderValue?parsedValue)
{
Contract.Requires(startIndex >= 0);
parsedValue = null;
if (StringSegment.IsNullOrEmpty(input) || (startIndex >= input.Length))
{
return(0);
}
// Caller must remove leading whitespaces. If not, we'll return 0.
var dispositionTypeLength = GetDispositionTypeExpressionLength(input, startIndex, out var dispositionType);
if (dispositionTypeLength == 0)
{
return(0);
}
var current = startIndex + dispositionTypeLength;
current = current + HttpRuleParser.GetWhitespaceLength(input, current);
var contentDispositionHeader = new ContentDispositionHeaderValue();
contentDispositionHeader._dispositionType = dispositionType;
// If we're not done and we have a parameter delimiter, then we have a list of parameters.
if ((current < input.Length) && (input[current] == ';'))
{
current++; // skip delimiter.
int parameterLength = NameValueHeaderValue.GetNameValueListLength(input, current, ';',
contentDispositionHeader.Parameters);
parsedValue = contentDispositionHeader;
return(current + parameterLength - startIndex);
}
// We have a ContentDisposition header without parameters.
parsedValue = contentDispositionHeader;
return(current - startIndex);
}
/// <summary>
/// Attempts to parse the specified <paramref name="input"/> as a <see cref="ContentDispositionHeaderValue"/>.
/// </summary>
/// <param name="input">The value to parse.</param>
/// <param name="parsedValue">The parsed value.</param>
/// <returns><see langword="true"/> if input is a valid <see cref="ContentDispositionHeaderValue"/>, otherwise <see langword="false"/>.</returns>
public static bool TryParse(StringSegment input, [NotNullWhen(true)] out ContentDispositionHeaderValue?parsedValue)
{
var index = 0;
return(Parser.TryParseValue(input, ref index, out parsedValue !));
}