| private GetByteCount ( char chars, int count, bool flush ) : int | ||
| chars | char | |
| count | int | |
| flush | bool | |
| return | int | |
private unsafe void CreateFirstSubstData(string s, IIS7WorkerRequest iis7WorkerRequest, System.Text.Encoder encoder)
{
IntPtr ptr;
int num = 0;
int length = s.Length;
if (length > 0)
{
fixed(char *str = ((char *)s))
{
char *chars = str;
int size = encoder.GetByteCount(chars, length, true);
ptr = iis7WorkerRequest.AllocateRequestMemory(size);
if (ptr != IntPtr.Zero)
{
num = encoder.GetBytes(chars, length, (byte *)ptr, size, true);
}
}
}
else
{
ptr = iis7WorkerRequest.AllocateRequestMemory(1);
}
if (ptr == IntPtr.Zero)
{
throw new OutOfMemoryException();
}
this._firstSubstData = ptr;
this._firstSubstDataSize = num;
}
public static int Hash(string data, Encoder enc)
{
var arr = data.ToCharArray();
int count = enc.GetByteCount(arr, 0, arr.Length, false);
var bytes = new byte[count];
enc.GetBytes(arr, 0, arr.Length, bytes, 0, false);
return Hash(bytes);
}
public static byte[] EncodeString(string vValue)
{
string str = vValue;
System.Text.Encoder encoder = m_encoding.GetEncoder();
char[] chars = str.ToCharArray();
byte[] bytes = new byte[encoder.GetByteCount(chars, 0, chars.Length, false)];
encoder.GetBytes(chars, 0, chars.Length, bytes, 0, true);
return(Mogo.RPC.Utils.FillLengthHead(bytes));
}
/// <summary>
/// Add a standard EXIF field to the image
/// </summary>
/// <param name="image"></param>
/// <param name="field"></param>
/// <param name="fieldValue"></param>
private static void WriteEXIFField(Image image, ExifField field, string fieldValue)
{
Encoding asciiEncoding = new ASCIIEncoding();
System.Text.Encoder encoder = asciiEncoding.GetEncoder();
char[] tagTextChars = fieldValue.ToCharArray();
int byteCount = encoder.GetByteCount(tagTextChars, 0, tagTextChars.Length, true);
byte[] tagTextBytes = new byte[byteCount];
encoder.GetBytes(tagTextChars, 0, tagTextChars.Length, tagTextBytes, 0, true);
if (image.PropertyItems != null && image.PropertyItems.Length > 0)
{
PropertyItem propertyItem = image.PropertyItems[0];
propertyItem.Id = (int)field;
propertyItem.Type = 2; // ASCII
propertyItem.Len = tagTextBytes.Length;
propertyItem.Value = tagTextBytes;
image.SetPropertyItem(propertyItem);
}
}
// GET api/<controller>
public HttpResponseMessage Get(string filename, string ext)
{
if (filename == null)
{
return(new HttpResponseMessage(HttpStatusCode.BadRequest));
}
string filePath = HostingEnvironment.MapPath("~/Videos/") + filename + "." + ext;
if (Request.Headers.Range != null)
{
try
{
System.Text.Encoder stringEncoder = Encoding.UTF8.GetEncoder();
byte[] stringBytes = new byte[stringEncoder.GetByteCount(filePath.ToCharArray(), 0, filePath.Length, true)];
stringEncoder.GetBytes(filePath.ToCharArray(), 0, filePath.Length, stringBytes, 0, true);
MD5CryptoServiceProvider MD5Enc = new MD5CryptoServiceProvider();
string hash = BitConverter.ToString(MD5Enc.ComputeHash(stringBytes)).Replace("-", string.Empty);
HttpResponseMessage partialResponse = Request.CreateResponse(HttpStatusCode.PartialContent);
partialResponse.Headers.AcceptRanges.Add("bytes");
partialResponse.Headers.ETag = new EntityTagHeaderValue("\"" + hash + "\"");
var stream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
partialResponse.Content = new ByteRangeStreamContent(stream, Request.Headers.Range, new MediaTypeHeaderValue("video/mp4"));
return(partialResponse);
}
catch (Exception ex)
{
return(new HttpResponseMessage(HttpStatusCode.InternalServerError));
}
}
else
{
return(new HttpResponseMessage(HttpStatusCode.RequestedRangeNotSatisfiable));
}
}
// WOS 1926509: ASP.NET: WriteSubstitution in integrated mode needs to support callbacks that return String.Empty
private unsafe void CreateFirstSubstData(String s, IIS7WorkerRequest iis7WorkerRequest, Encoder encoder) {
Debug.Assert(s != null, "s != null");
IntPtr pbBuffer;
int numBytes = 0;
int cch = s.Length;
if (cch > 0) {
fixed (char * pch = s) {
int cbBuffer = encoder.GetByteCount(pch, cch, true /*flush*/);
pbBuffer = iis7WorkerRequest.AllocateRequestMemory(cbBuffer);
if (pbBuffer != IntPtr.Zero) {
numBytes = encoder.GetBytes(pch, cch, (byte*)pbBuffer, cbBuffer, true /*flush*/);
}
}
}
else {
// deal with empty string
pbBuffer = iis7WorkerRequest.AllocateRequestMemory(1);
}
if (pbBuffer == IntPtr.Zero) {
throw new OutOfMemoryException();
}
_firstSubstData = pbBuffer;
_firstSubstDataSize = numBytes;
}
protected static byte[] StringToByteArray(string str, Encoder enc)
{
var ca = str.ToCharArray();
var ret = new byte[enc.GetByteCount(ca, 0, ca.Length, false)];
int charsUsed, bytesUsed;
bool completed;
enc.Convert(ca, 0, ca.Length, ret, 0, ret.Length, true, out charsUsed, out bytesUsed, out completed);
return ret;
}
static bool GetNextValue(string charset, Encoder encoder, HexEncoder hex, char[] chars, ref int index,
ref byte[] bytes, ref byte[] encoded, int maxLength, out string value)
{
int length = chars.Length - index;
if (length < maxLength) {
switch (GetEncodeMethod (chars, index, length)) {
case EncodeMethod.Quote:
value = MimeUtils.Quote (new string (chars, index, length));
index += length;
return false;
case EncodeMethod.None:
value = new string (chars, index, length);
index += length;
return false;
}
}
length = Math.Min (maxLength, length);
int ratio, count, n;
do {
count = encoder.GetByteCount (chars, index, length, true);
if (count > maxLength && length > 1) {
ratio = (int) Math.Round ((double) count / (double) length);
length -= Math.Max ((count - maxLength) / ratio, 1);
continue;
}
if (bytes.Length < count)
Array.Resize<byte> (ref bytes, count);
count = encoder.GetBytes (chars, index, length, bytes, 0, true);
// Note: the first chunk needs to be encoded in order to declare the charset
if (index > 0 || charset == "us-ascii") {
var method = GetEncodeMethod (bytes, count);
if (method == EncodeMethod.Quote) {
value = MimeUtils.Quote (Encoding.ASCII.GetString (bytes, 0, count));
index += length;
return false;
}
if (method == EncodeMethod.None) {
value = Encoding.ASCII.GetString (bytes, 0, count);
index += length;
return false;
}
}
n = hex.EstimateOutputLength (count);
if (encoded.Length < n)
Array.Resize<byte> (ref encoded, n);
// only the first value gets a charset declaration
int charsetLength = index == 0 ? charset.Length + 2 : 0;
n = hex.Encode (bytes, 0, count, encoded);
if (n > 3 && (charsetLength + n) > maxLength) {
int x = 0;
for (int i = n - 1; i >= 0 && charsetLength + i >= maxLength; i--) {
if (encoded[i] == (byte) '%')
x--;
else
x++;
}
ratio = (int) Math.Round ((double) count / (double) length);
length -= Math.Max (x / ratio, 1);
continue;
}
if (index == 0)
value = charset + "''" + Encoding.ASCII.GetString (encoded, 0, n);
else
value = Encoding.ASCII.GetString (encoded, 0, n);
index += length;
return true;
} while (true);
}
/// <summary>
/// Determines the number of bytes that result from an encoding operation
/// </summary>
/// <param name="encoder">The encoder performing the encoding operation</param>
/// <param name="span">The input characters</param>
/// <param name="flush">True to flush the encoder, otherwise False</param>
/// <returns>The number of bytes that would be output</returns>
public static unsafe int GetByteCount(this Encoder encoder, ReadOnlySpan <char> span, bool flush)
{
fixed(char *pSpan = &MemoryMarshal.GetReference(span))
return(encoder.GetByteCount(pSpan, span.Length, flush));
}
public static int GetByteCount(Encoder encoder, ReadOnlySpan <char> span, bool flush) => encoder.GetByteCount(span, flush);
private static int WriteWithUInt16LengthPrefix(byte[] buffer, ref int offset, Char[] value, Encoder coder)
{
#if DEBUG
if (buffer == null) throw new ArgumentNullException("buffer");
if (value == null) throw new ArgumentNullException("value");
if (coder == null) throw new ArgumentNullException("coder");
#endif
int ofs = offset;
int count = coder.GetByteCount(value, 0, value.Length, true);
int bytesUsed;
int charsUsed;
bool completed;
Write(buffer, ref ofs, (UInt16)count);
coder.Convert(value, 0, value.Length, buffer, ofs, buffer.Length - ofs, true
, out charsUsed
, out bytesUsed
, out completed);
if (!completed)
throw new ArgumentException(String.Format(
Properties.Resources.Error_BufferOutOfSpace), "buffer");
offset = ofs + bytesUsed;
return bytesUsed + 2;
}
