/// <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.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();
}
/// <summary>
/// Reads the body of the section as a string
/// </summary>
/// <param name="section">The section to read from</param>
/// <returns>The body steam as string</returns>
public static async Task <string> ReadAsStringAsync(this MultipartSection section)
{
if (section == null)
{
throw new ArgumentNullException(nameof(section));
}
MediaTypeHeaderValue.TryParse(section.ContentType, out var sectionMediaType);
var streamEncoding = sectionMediaType?.Encoding;
if (streamEncoding == null || streamEncoding == Encoding.UTF7)
{
streamEncoding = Encoding.UTF8;
}
using (var reader = new StreamReader(
section.Body,
streamEncoding,
detectEncodingFromByteOrderMarks: true,
bufferSize: 1024,
leaveOpen: true))
return(await reader.ReadToEndAsync());
}
/// <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>
/// <remarks>Reparses the content disposition header</remarks>
public FormMultipartSection(MultipartSection section)
: this(section, section.GetContentDispositionHeader())
{
}
/// <summary> /// Retrieves and parses the content disposition header from a section /// </summary> /// <param name="section">The section from which to retrieve</param> /// <returns>A <see cref="ContentDispositionHeaderValue"/> if the header was found, null otherwise</returns> public static ContentDispositionHeaderValue GetContentDispositionHeader(this MultipartSection section) => !ContentDispositionHeaderValue.TryParse(section.ContentDisposition, out var header) ? null : header;