//
// IRI normalization for strings containing characters that are not allowed or
// escaped characters that should be unescaped in the context of the specified Uri component.
//
internal static unsafe string EscapeUnescapeIri(char *pInput, int start, int end, UriComponents component)
{
int size = end - start;
ValueStringBuilder dest = size <= 256
? new ValueStringBuilder(stackalloc char[256])
: new ValueStringBuilder(size);
Span <byte> maxUtf8EncodedSpan = stackalloc byte[4];
for (int i = start; i < end; ++i)
{
char ch = pInput[i];
if (ch == '%')
{
if (end - i > 2)
{
ch = UriHelper.DecodeHexChars(pInput[i + 1], pInput[i + 2]);
// Do not unescape a reserved char
if (ch == Uri.c_DummyChar || ch == '%' || CheckIsReserved(ch, component) || UriHelper.IsNotSafeForUnescape(ch))
{
// keep as is
dest.Append(pInput[i++]);
dest.Append(pInput[i++]);
dest.Append(pInput[i]);
continue;
}
else if (ch <= '\x7F')
{
Debug.Assert(ch < 0xFF, "Expecting ASCII character.");
//ASCII
dest.Append(ch);
i += 2;
continue;
}
else
{
// possibly utf8 encoded sequence of unicode
int charactersRead = PercentEncodingHelper.UnescapePercentEncodedUTF8Sequence(
pInput + i,
end - i,
ref dest,
component == UriComponents.Query,
iriParsing: true);
Debug.Assert(charactersRead > 0);
i += charactersRead - 1; // -1 as i will be incremented in the loop
}
}
else
{
dest.Append(pInput[i]);
}
}
else if (ch > '\x7f')
{
// unicode
bool isInIriUnicodeRange;
bool surrogatePair = false;
char ch2 = '\0';
if ((char.IsHighSurrogate(ch)) && (i + 1 < end))
{
ch2 = pInput[i + 1];
isInIriUnicodeRange = CheckIriUnicodeRange(ch, ch2, out surrogatePair, component == UriComponents.Query);
}
else
{
isInIriUnicodeRange = CheckIriUnicodeRange(ch, component == UriComponents.Query);
}
if (isInIriUnicodeRange)
{
dest.Append(ch);
if (surrogatePair)
{
dest.Append(ch2);
}
}
else
{
Rune rune;
if (surrogatePair)
{
rune = new Rune(ch, ch2);
}
else if (!Rune.TryCreate(ch, out rune))
{
rune = Rune.ReplacementChar;
}
int bytesWritten = rune.EncodeToUtf8(maxUtf8EncodedSpan);
Span <byte> encodedBytes = maxUtf8EncodedSpan.Slice(0, bytesWritten);
foreach (byte b in encodedBytes)
{
UriHelper.EscapeAsciiChar(b, ref dest);
}
}
if (surrogatePair)
{
i++;
}
}
else
{
// just copy the character
dest.Append(pInput[i]);
}
}
return(dest.ToString());
}
/// <summary>
/// Replaces all occurrences of the regex in the string with the
/// replacement evaluator.
///
/// Note that the special case of no matches is handled on its own:
/// with no matches, the input string is returned unchanged.
/// The right-to-left case is split out because StringBuilder
/// doesn't handle right-to-left string building directly very well.
/// </summary>
private static string Replace(MatchEvaluator evaluator, Regex regex, string input, int count, int startat)
{
if (evaluator == null)
{
throw new ArgumentNullException(nameof(evaluator));
}
if (count < -1)
{
throw new ArgumentOutOfRangeException(nameof(count), SR.CountTooSmall);
}
if (startat < 0 || startat > input.Length)
{
throw new ArgumentOutOfRangeException(nameof(startat), SR.BeginIndexNotNegative);
}
if (count == 0)
{
return(input);
}
Match match = regex.Match(input, startat);
if (!match.Success)
{
return(input);
}
else
{
Span <char> charInitSpan = stackalloc char[ReplaceBufferSize];
var vsb = new ValueStringBuilder(charInitSpan);
if (!regex.RightToLeft)
{
int prevat = 0;
do
{
if (match.Index != prevat)
{
vsb.Append(input.AsSpan(prevat, match.Index - prevat));
}
prevat = match.Index + match.Length;
vsb.Append(evaluator(match) ?? "");
if (--count == 0)
{
break;
}
match = match.NextMatch();
} while (match.Success);
if (prevat < input.Length)
{
vsb.Append(input.AsSpan(prevat, input.Length - prevat));
}
}
else
{
// In right to left mode append all the inputs in reversed order to avoid an extra dynamic data structure
// and to be able to work with Spans. A final reverse of the transformed reversed input string generates
// the desired output. Similar to Tower of Hanoi.
int prevat = input.Length;
do
{
if (match.Index + match.Length != prevat)
{
vsb.AppendReversed(input.AsSpan(match.Index + match.Length, prevat - match.Index - match.Length));
}
prevat = match.Index;
vsb.AppendReversed(evaluator(match));
if (--count == 0)
{
break;
}
match = match.NextMatch();
} while (match.Success);
if (prevat > 0)
{
vsb.AppendReversed(input.AsSpan(0, prevat));
}
vsb.Reverse();
}
return(vsb.ToString());
}
}
/// <summary>
/// Try to remove relative segments from the given path (without combining with a root).
/// </summary>
/// <param name="rootLength">The length of the root of the given path</param>
internal static string RemoveRelativeSegments(string path, int rootLength)
{
Debug.Assert(rootLength > 0);
bool flippedSeparator = false;
int skip = rootLength;
// We treat "\.." , "\." and "\\" as a relative segment. We want to collapse the first separator past the root presuming
// the root actually ends in a separator. Otherwise the first segment for RemoveRelativeSegments
// in cases like "\\?\C:\.\" and "\\?\C:\..\", the first segment after the root will be ".\" and "..\" which is not considered as a relative segment and hence not be removed.
if (PathInternal.IsDirectorySeparator(path[skip - 1]))
{
skip--;
}
Span <char> initialBuffer = stackalloc char[260 /* PathInternal.MaxShortPath */];
ValueStringBuilder sb = new ValueStringBuilder(initialBuffer);
// Remove "//", "/./", and "/../" from the path by copying each character to the output,
// except the ones we're removing, such that the builder contains the normalized path
// at the end.
if (skip > 0)
{
sb.Append(path.AsSpan(0, skip));
}
for (int i = skip; i < path.Length; i++)
{
char c = path[i];
if (PathInternal.IsDirectorySeparator(c) && i + 1 < path.Length)
{
// Skip this character if it's a directory separator and if the next character is, too,
// e.g. "parent//child" => "parent/child"
if (PathInternal.IsDirectorySeparator(path[i + 1]))
{
continue;
}
// Skip this character and the next if it's referring to the current directory,
// e.g. "parent/./child" => "parent/child"
if ((i + 2 == path.Length || PathInternal.IsDirectorySeparator(path[i + 2])) &&
path[i + 1] == '.')
{
i++;
continue;
}
// Skip this character and the next two if it's referring to the parent directory,
// e.g. "parent/child/../grandchild" => "parent/grandchild"
if (i + 2 < path.Length &&
(i + 3 == path.Length || PathInternal.IsDirectorySeparator(path[i + 3])) &&
path[i + 1] == '.' && path[i + 2] == '.')
{
// Unwind back to the last slash (and if there isn't one, clear out everything).
int s;
for (s = sb.Length - 1; s >= skip; s--)
{
if (PathInternal.IsDirectorySeparator(sb[s]))
{
sb.Length = (i + 3 >= path.Length && s == skip) ? s + 1 : s; // to avoid removing the complete "\tmp\" segment in cases like \\?\C:\tmp\..\, C:\tmp\..
break;
}
}
if (s < skip)
{
sb.Length = skip;
}
i += 2;
continue;
}
}
// Normalize the directory separator if needed
if (c != PathInternal.DirectorySeparatorChar && c == PathInternal.AltDirectorySeparatorChar)
{
c = PathInternal.DirectorySeparatorChar;
flippedSeparator = true;
}
sb.Append(c);
}
// If we haven't changed the source path, return the original
if (!flippedSeparator && sb.Length == path.Length)
{
sb.Dispose();
return(path);
}
return(sb.Length < rootLength?path.Substring(0, rootLength) : sb.ToString());
}
private string GetFieldsDirective()
{
// 152 is the length of the default fields directive
var sb = new ValueStringBuilder(152);
sb.Append("#Fields:");
if (_loggingFields.HasFlag(W3CLoggingFields.Date))
{
sb.Append(" date");
}
if (_loggingFields.HasFlag(W3CLoggingFields.Time))
{
sb.Append(" time");
}
if (_loggingFields.HasFlag(W3CLoggingFields.ClientIpAddress))
{
sb.Append(" c-ip");
}
if (_loggingFields.HasFlag(W3CLoggingFields.UserName))
{
sb.Append(" cs-username");
}
if (_loggingFields.HasFlag(W3CLoggingFields.ServerName))
{
sb.Append(" s-computername");
}
if (_loggingFields.HasFlag(W3CLoggingFields.ServerIpAddress))
{
sb.Append(" s-ip");
}
if (_loggingFields.HasFlag(W3CLoggingFields.ServerPort))
{
sb.Append(" s-port");
}
if (_loggingFields.HasFlag(W3CLoggingFields.Method))
{
sb.Append(" cs-method");
}
if (_loggingFields.HasFlag(W3CLoggingFields.UriStem))
{
sb.Append(" cs-uri-stem");
}
if (_loggingFields.HasFlag(W3CLoggingFields.UriQuery))
{
sb.Append(" cs-uri-query");
}
if (_loggingFields.HasFlag(W3CLoggingFields.ProtocolStatus))
{
sb.Append(" sc-status");
}
if (_loggingFields.HasFlag(W3CLoggingFields.TimeTaken))
{
sb.Append(" time-taken");
}
if (_loggingFields.HasFlag(W3CLoggingFields.ProtocolVersion))
{
sb.Append(" cs-version");
}
if (_loggingFields.HasFlag(W3CLoggingFields.Host))
{
sb.Append(" cs-host");
}
if (_loggingFields.HasFlag(W3CLoggingFields.UserAgent))
{
sb.Append(" cs(User-Agent)");
}
if (_loggingFields.HasFlag(W3CLoggingFields.Cookie))
{
sb.Append(" cs(Cookie)");
}
if (_loggingFields.HasFlag(W3CLoggingFields.Referer))
{
sb.Append(" cs(Referer)");
}
if (_additionalRequestHeaders != null)
{
foreach (var header in _additionalRequestHeaders)
{
sb.Append($" cs({header})");
}
}
return(sb.ToString());
}
public static string Combine(params string[] paths)
{
if (paths == null)
{
throw new ArgumentNullException(nameof(paths));
}
int maxSize = 0;
int firstComponent = 0;
// We have two passes, the first calculates how large a buffer to allocate and does some precondition
// checks on the paths passed in. The second actually does the combination.
for (int i = 0; i < paths.Length; i++)
{
if (paths[i] == null)
{
throw new ArgumentNullException(nameof(paths));
}
if (paths[i].Length == 0)
{
continue;
}
if (IsPathRooted(paths[i]))
{
firstComponent = i;
maxSize = paths[i].Length;
}
else
{
maxSize += paths[i].Length;
}
char ch = paths[i][paths[i].Length - 1];
if (!PathInternal.IsDirectorySeparator(ch))
{
maxSize++;
}
}
Span <char> initialBuffer = stackalloc char[260]; // MaxShortPath on Windows
var builder = new ValueStringBuilder(initialBuffer);
builder.EnsureCapacity(maxSize);
for (int i = firstComponent; i < paths.Length; i++)
{
if (paths[i].Length == 0)
{
continue;
}
if (builder.Length == 0)
{
builder.Append(paths[i]);
}
else
{
char ch = builder[builder.Length - 1];
if (!PathInternal.IsDirectorySeparator(ch))
{
builder.Append(PathInternal.DirectorySeparatorChar);
}
builder.Append(paths[i]);
}
}
return(builder.ToString());
}
//
// IRI normalization for strings containing characters that are not allowed or
// escaped characters that should be unescaped in the context of the specified Uri component.
//
internal static unsafe string EscapeUnescapeIri(char *pInput, int start, int end, UriComponents component)
{
int size = end - start;
ValueStringBuilder dest = new ValueStringBuilder(size);
byte[]? bytes = null;
const int percentEncodingLen = 3; // Escaped UTF-8 will take 3 chars: %AB.
int bufferRemaining = 0;
int next = start;
char ch;
bool escape = false;
bool surrogatePair = false;
for (; next < end; ++next)
{
escape = false;
surrogatePair = false;
if ((ch = pInput[next]) == '%')
{
if (next + 2 < end)
{
ch = UriHelper.EscapedAscii(pInput[next + 1], pInput[next + 2]);
// Do not unescape a reserved char
if (ch == Uri.c_DummyChar || ch == '%' || CheckIsReserved(ch, component) || UriHelper.IsNotSafeForUnescape(ch))
{
// keep as is
dest.Append(pInput[next++]);
dest.Append(pInput[next++]);
dest.Append(pInput[next]);
continue;
}
else if (ch <= '\x7F')
{
Debug.Assert(ch < 0xFF, "Expecting ASCII character.");
//ASCII
dest.Append(ch);
next += 2;
continue;
}
else
{
// possibly utf8 encoded sequence of unicode
// check if safe to unescape according to Iri rules
Debug.Assert(ch < 0xFF, "Expecting ASCII character.");
int startSeq = next;
int byteCount = 1;
// lazy initialization of max size, will reuse the array for next sequences
if ((object?)bytes == null)
{
bytes = new byte[end - next];
}
bytes[0] = (byte)ch;
next += 3;
while (next < end)
{
// Check on exit criterion
if ((ch = pInput[next]) != '%' || next + 2 >= end)
{
break;
}
// already made sure we have 3 characters in str
ch = UriHelper.EscapedAscii(pInput[next + 1], pInput[next + 2]);
//invalid hex sequence ?
if (ch == Uri.c_DummyChar)
{
break;
}
// character is not part of a UTF-8 sequence ?
else if (ch < '\x80')
{
break;
}
else
{
//a UTF-8 sequence
bytes[byteCount++] = (byte)ch;
next += 3;
}
Debug.Assert(ch < 0xFF, "Expecting ASCII character.");
}
next--; // for loop will increment
// Using encoder with no replacement fall-back will skip all invalid UTF-8 sequences.
Encoding noFallbackCharUTF8 = Encoding.GetEncoding(
Encoding.UTF8.CodePage,
new EncoderReplacementFallback(""),
new DecoderReplacementFallback(""));
char[] unescapedChars = new char[bytes.Length];
int charCount = noFallbackCharUTF8.GetChars(bytes, 0, byteCount, unescapedChars, 0);
if (charCount != 0)
{
// If invalid sequences were present in the original escaped string, we need to
// copy the escaped versions of those sequences.
// Decoded Unicode values will be kept only when they are allowed by the URI/IRI RFC
// rules.
UriHelper.MatchUTF8Sequence(ref dest, unescapedChars, charCount, bytes,
byteCount, component == UriComponents.Query, true);
}
else
{
// copy escaped sequence as is
for (int i = startSeq; i <= next; ++i)
{
dest.Append(pInput[i]);
}
}
}
}
else
{
dest.Append(pInput[next]);
}
}
else if (ch > '\x7f')
{
// unicode
char ch2;
if ((char.IsHighSurrogate(ch)) && (next + 1 < end))
{
ch2 = pInput[next + 1];
escape = !CheckIriUnicodeRange(ch, ch2, ref surrogatePair, component == UriComponents.Query);
if (!escape)
{
// copy the two chars
dest.Append(pInput[next++]);
dest.Append(pInput[next]);
}
}
else
{
if (CheckIriUnicodeRange(ch, component == UriComponents.Query))
{
// copy it
dest.Append(pInput[next]);
}
else
{
// escape it
escape = true;
}
}
}
else
{
// just copy the character
dest.Append(pInput[next]);
}
if (escape)
{
const int MaxNumberOfBytesEncoded = 4;
byte[] encodedBytes = new byte[MaxNumberOfBytesEncoded];
fixed(byte *pEncodedBytes = &encodedBytes[0])
{
int encodedBytesCount = Encoding.UTF8.GetBytes(pInput + next, surrogatePair ? 2 : 1, pEncodedBytes, MaxNumberOfBytesEncoded);
Debug.Assert(encodedBytesCount <= MaxNumberOfBytesEncoded, "UTF8 encoder should not exceed specified byteCount");
bufferRemaining -= encodedBytesCount * percentEncodingLen;
for (int count = 0; count < encodedBytesCount; ++count)
{
UriHelper.EscapeAsciiChar((char)encodedBytes[count], ref dest);
}
}
}
}
string result = dest.ToString();
return(result);
}
static string GetJoinedStringValueFromArray(string[] values)
{
// Calculate final length
int length = 0;
for (int i = 0; i < values.Length; i++)
{
string value = values[i];
// Skip null and empty values
if (value != null && value.Length > 0)
{
if (length > 0)
{
// Add seperator
length++;
}
length += value.Length;
}
}
#if NETCOREAPP
// Create the new string
return(string.Create(length, values, (span, strings) => {
int offset = 0;
// Skip null and empty values
for (int i = 0; i < strings.Length; i++)
{
string value = strings[i];
if (value != null && value.Length > 0)
{
if (offset > 0)
{
// Add seperator
span[offset] = ',';
offset++;
}
value.AsSpan().CopyTo(span.Slice(offset));
offset += value.Length;
}
}
}));
#else
var sb = new ValueStringBuilder(length);
bool hasAdded = false;
// Skip null and empty values
for (int i = 0; i < values.Length; i++)
{
string value = values[i];
if (value != null && value.Length > 0)
{
if (hasAdded)
{
// Add seperator
sb.Append(',');
}
sb.Append(value);
hasAdded = true;
}
}
return(sb.ToString());
#endif
}
private static string FormatBigIntegerToHex(BigInteger value, char format, int digits, NumberFormatInfo info)
{
Debug.Assert(format == 'x' || format == 'X');
// Get the bytes that make up the BigInteger.
Span <byte> bits = stackalloc byte[64]; // arbitrary limit to switch from stack to heap
bits = value.TryWriteBytes(bits, out int bytesWritten) ?
bits.Slice(0, bytesWritten) :
value.ToByteArray();
Span <char> stackSpace = stackalloc char[128]; // each byte is typically two chars
var sb = new ValueStringBuilder(stackSpace);
int cur = bits.Length - 1;
if (cur > -1)
{
// [FF..F8] drop the high F as the two's complement negative number remains clear
// [F7..08] retain the high bits as the two's complement number is wrong without it
// [07..00] drop the high 0 as the two's complement positive number remains clear
bool clearHighF = false;
byte head = bits[cur];
if (head > 0xF7)
{
head -= 0xF0;
clearHighF = true;
}
if (head < 0x08 || clearHighF)
{
// {0xF8-0xFF} print as {8-F}
// {0x00-0x07} print as {0-7}
sb.Append(head < 10 ?
(char)(head + '0') :
format == 'X' ? (char)((head & 0xF) - 10 + 'A') : (char)((head & 0xF) - 10 + 'a'));
cur--;
}
}
if (cur > -1)
{
Span <char> chars = sb.AppendSpan((cur + 1) * 2);
int charsPos = 0;
string hexValues = format == 'x' ? "0123456789abcdef" : "0123456789ABCDEF";
while (cur > -1)
{
byte b = bits[cur--];
chars[charsPos++] = hexValues[b >> 4];
chars[charsPos++] = hexValues[b & 0xF];
}
}
if (digits > sb.Length)
{
// Insert leading zeros, e.g. user specified "X5" so we create "0ABCD" instead of "ABCD"
sb.Insert(
0,
value._sign >= 0 ? '0' : (format == 'x') ? 'f' : 'F',
digits - sb.Length);
}
return(sb.ToString());
}
internal static string Normalize(string path)
{
Span <char> initialBuffer = stackalloc char[PathInternal.MaxShortPath];
var builder = new ValueStringBuilder(initialBuffer);
// Get the full path
GetFullPathName(path.AsSpan(), ref builder);
// If we have the exact same string we were passed in, don't allocate another string.
// TryExpandShortName does this input identity check.
string result = builder.AsSpan().IndexOf('~') >= 0
? TryExpandShortFileName(ref builder, originalPath: path)
: builder.AsSpan().Equals(path.AsSpan(), StringComparison.Ordinal) ? path : builder.ToString();
// Clear the buffer
builder.Dispose();
return(result);
}
internal static string NormalizeDirectorySeparators(string path)
{
if (string.IsNullOrEmpty(path))
{
return(path);
}
char current;
// Make a pass to see if we need to normalize so we can potentially skip allocating
bool normalized = true;
for (int i = 0; i < path.Length; i++)
{
current = path[i];
if (IsDirectorySeparator(current) &&
(current != DirectorySeparatorChar
// Check for sequential separators past the first position (we need to keep initial two for UNC/extended)
|| (i > 0 && i + 1 < path.Length && IsDirectorySeparator(path[i + 1]))))
{
normalized = false;
break;
}
}
if (normalized)
{
return(path);
}
Span <char> initialBuffer = stackalloc char[MaxShortPath];
ValueStringBuilder builder = new ValueStringBuilder(initialBuffer);
int start = 0;
if (IsDirectorySeparator(path[start]))
{
start++;
builder.Append(DirectorySeparatorChar);
}
for (int i = start; i < path.Length; i++)
{
current = path[i];
// If we have a separator
if (IsDirectorySeparator(current))
{
// If the next is a separator, skip adding this
if (i + 1 < path.Length && IsDirectorySeparator(path[i + 1]))
{
continue;
}
// Ensure it is the primary separator
current = DirectorySeparatorChar;
}
builder.Append(current);
}
return(builder.ToString());
}
//
// IRI normalization for strings containing characters that are not allowed or
// escaped characters that should be unescaped in the context of the specified Uri component.
//
internal static unsafe string EscapeUnescapeIri(char *pInput, int start, int end, UriComponents component)
{
int size = end - start;
ValueStringBuilder dest = new ValueStringBuilder(size);
byte[]? bytes = null;
int next = start;
char ch;
for (; next < end; ++next)
{
if ((ch = pInput[next]) == '%')
{
if (next + 2 < end)
{
ch = UriHelper.EscapedAscii(pInput[next + 1], pInput[next + 2]);
// Do not unescape a reserved char
if (ch == Uri.c_DummyChar || ch == '%' || CheckIsReserved(ch, component) || UriHelper.IsNotSafeForUnescape(ch))
{
// keep as is
dest.Append(pInput[next++]);
dest.Append(pInput[next++]);
dest.Append(pInput[next]);
continue;
}
else if (ch <= '\x7F')
{
Debug.Assert(ch < 0xFF, "Expecting ASCII character.");
//ASCII
dest.Append(ch);
next += 2;
continue;
}
else
{
// possibly utf8 encoded sequence of unicode
// check if safe to unescape according to Iri rules
Debug.Assert(ch < 0xFF, "Expecting ASCII character.");
int startSeq = next;
int byteCount = 1;
// lazy initialization of max size, will reuse the array for next sequences
if ((object?)bytes == null)
{
bytes = new byte[end - next];
}
bytes[0] = (byte)ch;
next += 3;
while (next < end)
{
// Check on exit criterion
if ((ch = pInput[next]) != '%' || next + 2 >= end)
{
break;
}
// already made sure we have 3 characters in str
ch = UriHelper.EscapedAscii(pInput[next + 1], pInput[next + 2]);
//invalid hex sequence ?
if (ch == Uri.c_DummyChar)
{
break;
}
// character is not part of a UTF-8 sequence ?
else if (ch < '\x80')
{
break;
}
else
{
//a UTF-8 sequence
bytes[byteCount++] = (byte)ch;
next += 3;
}
Debug.Assert(ch < 0xFF, "Expecting ASCII character.");
}
next--; // for loop will increment
// Using encoder with no replacement fall-back will skip all invalid UTF-8 sequences.
Encoding noFallbackCharUTF8 = Encoding.GetEncoding(
Encoding.UTF8.CodePage,
new EncoderReplacementFallback(""),
new DecoderReplacementFallback(""));
char[] unescapedChars = new char[bytes.Length];
int charCount = noFallbackCharUTF8.GetChars(bytes, 0, byteCount, unescapedChars, 0);
if (charCount != 0)
{
// If invalid sequences were present in the original escaped string, we need to
// copy the escaped versions of those sequences.
// Decoded Unicode values will be kept only when they are allowed by the URI/IRI RFC
// rules.
UriHelper.MatchUTF8Sequence(ref dest, unescapedChars, charCount, bytes,
byteCount, component == UriComponents.Query, true);
}
else
{
// copy escaped sequence as is
for (int i = startSeq; i <= next; ++i)
{
dest.Append(pInput[i]);
}
}
}
}
else
{
dest.Append(pInput[next]);
}
}
else if (ch > '\x7f')
{
// unicode
bool escape;
bool surrogatePair = false;
char ch2 = '\0';
if ((char.IsHighSurrogate(ch)) && (next + 1 < end))
{
ch2 = pInput[next + 1];
escape = !CheckIriUnicodeRange(ch, ch2, ref surrogatePair, component == UriComponents.Query);
}
else
{
escape = !CheckIriUnicodeRange(ch, component == UriComponents.Query);
}
if (escape)
{
Span <byte> encodedBytes = stackalloc byte[4];
Rune rune;
if (surrogatePair)
{
rune = new Rune(ch, ch2);
}
else if (!Rune.TryCreate(ch, out rune))
{
rune = Rune.ReplacementChar;
}
int bytesWritten = rune.EncodeToUtf8(encodedBytes);
encodedBytes = encodedBytes.Slice(0, bytesWritten);
foreach (byte b in encodedBytes)
{
UriHelper.EscapeAsciiChar(b, ref dest);
}
}
else
{
dest.Append(ch);
if (surrogatePair)
{
dest.Append(ch2);
}
}
if (surrogatePair)
{
next++;
}
}
else
{
// just copy the character
dest.Append(pInput[next]);
}
}
string result = dest.ToString();
return(result);
}
private static string?FormatBigIntegerToHex(bool targetSpan, BigInteger value, char format, int digits, NumberFormatInfo info, Span <char> destination, out int charsWritten, out bool spanSuccess)
{
Debug.Assert(format == 'x' || format == 'X');
// Get the bytes that make up the BigInteger.
byte[]? arrayToReturnToPool = null;
Span <byte> bits = stackalloc byte[64]; // arbitrary threshold
if (!value.TryWriteOrCountBytes(bits, out int bytesWrittenOrNeeded))
{
bits = arrayToReturnToPool = ArrayPool <byte> .Shared.Rent(bytesWrittenOrNeeded);
bool success = value.TryWriteBytes(bits, out bytesWrittenOrNeeded);
Debug.Assert(success);
}
bits = bits.Slice(0, bytesWrittenOrNeeded);
Span <char> stackSpace = stackalloc char[128]; // each byte is typically two chars
var sb = new ValueStringBuilder(stackSpace);
int cur = bits.Length - 1;
if (cur > -1)
{
// [FF..F8] drop the high F as the two's complement negative number remains clear
// [F7..08] retain the high bits as the two's complement number is wrong without it
// [07..00] drop the high 0 as the two's complement positive number remains clear
bool clearHighF = false;
byte head = bits[cur];
if (head > 0xF7)
{
head -= 0xF0;
clearHighF = true;
}
if (head < 0x08 || clearHighF)
{
// {0xF8-0xFF} print as {8-F}
// {0x00-0x07} print as {0-7}
sb.Append(head < 10 ?
(char)(head + '0') :
format == 'X' ? (char)((head & 0xF) - 10 + 'A') : (char)((head & 0xF) - 10 + 'a'));
cur--;
}
}
if (cur > -1)
{
Span <char> chars = sb.AppendSpan((cur + 1) * 2);
int charsPos = 0;
string hexValues = format == 'x' ? "0123456789abcdef" : "0123456789ABCDEF";
while (cur > -1)
{
byte b = bits[cur--];
chars[charsPos++] = hexValues[b >> 4];
chars[charsPos++] = hexValues[b & 0xF];
}
}
if (digits > sb.Length)
{
// Insert leading zeros, e.g. user specified "X5" so we create "0ABCD" instead of "ABCD"
sb.Insert(
0,
value._sign >= 0 ? '0' : (format == 'x') ? 'f' : 'F',
digits - sb.Length);
}
if (arrayToReturnToPool != null)
{
ArrayPool <byte> .Shared.Return(arrayToReturnToPool);
}
if (targetSpan)
{
spanSuccess = sb.TryCopyTo(destination, out charsWritten);
return(null);
}
else
{
charsWritten = 0;
spanSuccess = false;
return(sb.ToString());
}
}
public string CreateReagentListString(string separator)
{
ValueStringBuilder sb = new ValueStringBuilder();
{
for (int i = 0; i < Regs.Length; i++)
{
switch (Regs[i])
{
// britanian reagents
case Reagents.BlackPearl:
sb.Append(ResGeneral.BlackPearl);
break;
case Reagents.Bloodmoss:
sb.Append(ResGeneral.Bloodmoss);
break;
case Reagents.Garlic:
sb.Append(ResGeneral.Garlic);
break;
case Reagents.Ginseng:
sb.Append(ResGeneral.Ginseng);
break;
case Reagents.MandrakeRoot:
sb.Append(ResGeneral.MandrakeRoot);
break;
case Reagents.Nightshade:
sb.Append(ResGeneral.Nightshade);
break;
case Reagents.SulfurousAsh:
sb.Append(ResGeneral.SulfurousAsh);
break;
case Reagents.SpidersSilk:
sb.Append(ResGeneral.SpidersSilk);
break;
// pagan reagents
case Reagents.BatWing:
sb.Append(ResGeneral.BatWing);
break;
case Reagents.GraveDust:
sb.Append(ResGeneral.GraveDust);
break;
case Reagents.DaemonBlood:
sb.Append(ResGeneral.DaemonBlood);
break;
case Reagents.NoxCrystal:
sb.Append(ResGeneral.NoxCrystal);
break;
case Reagents.PigIron:
sb.Append(ResGeneral.PigIron);
break;
default:
if (Regs[i] < Reagents.None)
{
sb.Append(StringHelper.AddSpaceBeforeCapital(Regs[i].ToString()));
}
break;
}
if (i < Regs.Length - 1)
{
sb.Append(separator);
}
}
string ss = sb.ToString();
sb.Dispose();
return(ss);
}
}
private static void LogPacket(byte[] buffer, int length, bool toServer)
{
if (_logFile == null)
{
_logFile = new LogFile(FileSystemHelper.CreateFolderIfNotExists(CUOEnviroment.ExecutablePath, "Logs", "Network"), "packets.log");
}
Span <char> span = stackalloc char[256];
ValueStringBuilder output = new ValueStringBuilder(span);
{
int off = sizeof(ulong) + 2;
output.Append(' ', off);
output.Append(string.Format("Ticks: {0} | {1} | ID: {2:X2} Length: {3}\n", Time.Ticks, (toServer ? "Client -> Server" : "Server -> Client"), buffer[0], length));
if (buffer[0] == 0x80 || buffer[0] == 0x91)
{
output.Append(' ', off);
output.Append("[ACCOUNT CREDENTIALS HIDDEN]\n");
}
else
{
output.Append(' ', off);
output.Append("0 1 2 3 4 5 6 7 8 9 A B C D E F\n");
output.Append(' ', off);
output.Append("-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --\n");
ulong address = 0;
for (int i = 0; i < length; i += 16, address += 16)
{
output.Append($"{address:X8}");
for (int j = 0; j < 16; ++j)
{
if ((j % 8) == 0)
{
output.Append(" ");
}
if (i + j < length)
{
output.Append($" {buffer[i + j]:X2}");
}
else
{
output.Append(" ");
}
}
output.Append(" ");
for (int j = 0; j < 16 && i + j < length; ++j)
{
byte c = buffer[i + j];
if (c >= 0x20 && c < 0x80)
{
output.Append((char)c);
}
else
{
output.Append('.');
}
}
output.Append('\n');
}
}
output.Append('\n');
output.Append('\n');
_logFile.Write(output.ToString());
output.Dispose();
}
}
public override object?ConvertTo(ITypeDescriptorContext?context, CultureInfo?culture, object?value, Type destinationType)
{
if (value is Font font)
{
if (destinationType == typeof(string))
{
if (culture == null)
{
culture = CultureInfo.CurrentCulture;
}
ValueStringBuilder sb = default;
sb.Append(font.Name);
sb.Append(culture.TextInfo.ListSeparator[0]);
sb.Append(" ");
sb.Append(font.Size.ToString(culture.NumberFormat));
switch (font.Unit)
{
// MS throws ArgumentException, if unit is set
// to GraphicsUnit.Display
// Don't know what to append for GraphicsUnit.Display
case GraphicsUnit.Display:
sb.Append("display");
break;
case GraphicsUnit.Document:
sb.Append("doc");
break;
case GraphicsUnit.Point:
sb.Append("pt");
break;
case GraphicsUnit.Inch:
sb.Append("in");
break;
case GraphicsUnit.Millimeter:
sb.Append("mm");
break;
case GraphicsUnit.Pixel:
sb.Append("px");
break;
case GraphicsUnit.World:
sb.Append("world");
break;
}
if (font.Style != FontStyle.Regular)
{
sb.Append(culture.TextInfo.ListSeparator[0]);
sb.Append(" style=");
sb.Append(font.Style.ToString());
}
return(sb.ToString());
}
if (destinationType == typeof(InstanceDescriptor))
{
ConstructorInfo?met = typeof(Font).GetConstructor(new Type[] { typeof(string), typeof(float), typeof(FontStyle), typeof(GraphicsUnit) });
object[] args = new object[4];
args[0] = font.Name;
args[1] = font.Size;
args[2] = font.Style;
args[3] = font.Unit;
return(new InstanceDescriptor(met, args));
}
}
return(base.ConvertTo(context, culture, value, destinationType));
}
public void TestStringBuilders()
{
{
Span <char> buf = stackalloc char[128];
var bdr = new FixedStringBuilder(buf);
bdr.AppendLine("Hello World");
bdr.Append("Hello");
bdr.Append(' ');
bdr.Append(12);
bdr.Append(' ');
bdr.AppendLine("Worlds");
int numReplaced = bdr.Replace('e', 'u');
Assert.AreEqual(2, numReplaced);
var expected = "Hullo World" + Environment.NewLine + "Hullo 12 Worlds" + Environment.NewLine;
Assert.AreEqual(expected.Length, bdr.Length);
Assert.IsTrue(bdr.ReadOnlySpan.SequenceEqual(expected));
numReplaced = bdr.Replace("Hullo", "Hi");
Assert.AreEqual(2, numReplaced);
expected = expected.Replace("Hullo", "Hi");
Assert.IsTrue(bdr.ReadOnlySpan.SequenceEqual(expected));
numReplaced = bdr.Replace("Hi", "");
Assert.AreEqual(2, numReplaced);
expected = expected.Replace("Hi", "");
Assert.IsTrue(bdr.ReadOnlySpan.SequenceEqual(expected));
bdr.Replace("World", "World");
Assert.IsTrue(bdr.ReadOnlySpan.SequenceEqual(expected));
bdr.Replace("Florka", "--");
Assert.IsTrue(bdr.ReadOnlySpan.SequenceEqual(expected));
bdr.Replace("Florka", "Florka");
Assert.IsTrue(bdr.ReadOnlySpan.SequenceEqual(expected));
bdr.Clear();
Assert.AreEqual(0, bdr.Length);
Assert.AreEqual("", bdr.ToString());
bdr.Append("Koko");
bdr.Append('s');
Assert.AreEqual("Kokos".Length, bdr.Length);
Assert.IsTrue(bdr.ReadOnlySpan.SequenceEqual("Kokos"));
}
{
var sbdr = new ValueStringBuilder(8);
sbdr.AppendLine("Hello World");
sbdr.Append("Hello");
sbdr.Append(' ');
sbdr.Append(12u);
sbdr.Append(' ');
sbdr.AppendLine("Worlds");
var numReplaced = sbdr.Replace('e', 'u');
Assert.AreEqual(2, numReplaced);
var expected = "Hullo World" + Environment.NewLine + "Hullo 12 Worlds" + Environment.NewLine;
Assert.AreEqual(expected.Length, sbdr.Length);
Assert.IsTrue(sbdr.ReadOnlySpan.SequenceEqual(expected));
numReplaced = sbdr.Replace("Hullo", "Hi");
Assert.AreEqual(2, numReplaced);
expected = expected.Replace("Hullo", "Hi");
Assert.IsTrue(sbdr.ReadOnlySpan.SequenceEqual(expected));
numReplaced = sbdr.Replace("Hi", "");
Assert.AreEqual(2, numReplaced);
expected = expected.Replace("Hi", "");
Assert.IsTrue(sbdr.ReadOnlySpan.SequenceEqual(expected));
sbdr.Replace("World", "World");
Assert.IsTrue(sbdr.ReadOnlySpan.SequenceEqual(expected));
sbdr.Replace("Florka", "--");
Assert.IsTrue(sbdr.ReadOnlySpan.SequenceEqual(expected));
sbdr.Replace("Florka", "Florka");
Assert.IsTrue(sbdr.ReadOnlySpan.SequenceEqual(expected));
sbdr.Clear();
Assert.AreEqual(0, sbdr.Length);
Assert.AreEqual("", sbdr.ToString());
sbdr.Append("Koko");
sbdr.Append('s');
Assert.AreEqual("Kokos".Length, sbdr.Length);
Assert.IsTrue(sbdr.ReadOnlySpan.SequenceEqual("Kokos"));
}
}
private readonly int[] _rules; // negative -> group #, positive -> string #
/// <summary>
/// Since RegexReplacement shares the same parser as Regex,
/// the constructor takes a RegexNode which is a concatenation
/// of constant strings and backreferences.
/// </summary>
public RegexReplacement(string rep, RegexNode concat, Hashtable _caps)
{
if (concat.Type != RegexNode.Concatenate)
{
throw ThrowHelper.CreateArgumentException(ExceptionResource.ReplacementError);
}
Span <char> vsbStack = stackalloc char[256];
var vsb = new ValueStringBuilder(vsbStack);
FourStackStrings stackStrings = default;
var strings = new ValueListBuilder <string>(MemoryMarshal.CreateSpan(ref stackStrings.Item1 !, 4));
var rules = new ValueListBuilder <int>(stackalloc int[64]);
int childCount = concat.ChildCount();
for (int i = 0; i < childCount; i++)
{
RegexNode child = concat.Child(i);
switch (child.Type)
{
case RegexNode.Multi:
vsb.Append(child.Str !);
break;
case RegexNode.One:
vsb.Append(child.Ch);
break;
case RegexNode.Ref:
if (vsb.Length > 0)
{
rules.Append(strings.Length);
strings.Append(vsb.ToString());
vsb = new ValueStringBuilder(vsbStack);
}
int slot = child.M;
if (_caps != null && slot >= 0)
{
slot = (int)_caps[slot] !;
}
rules.Append(-Specials - 1 - slot);
break;
default:
throw ThrowHelper.CreateArgumentException(ExceptionResource.ReplacementError);
}
}
if (vsb.Length > 0)
{
rules.Append(strings.Length);
strings.Append(vsb.ToString());
}
Pattern = rep;
_strings = strings.AsSpan().ToArray();
_rules = rules.AsSpan().ToArray();
rules.Dispose();
}
public static void HandleMessage
(
Entity parent,
string text,
string name,
ushort hue,
MessageType type,
byte font,
TextType textType,
bool unicode = false,
string lang = null
)
{
if (string.IsNullOrEmpty(text))
{
return;
}
Profile currentProfile = ProfileManager.CurrentProfile;
if (currentProfile != null && currentProfile.OverrideAllFonts)
{
font = currentProfile.ChatFont;
unicode = currentProfile.OverrideAllFontsIsUnicode;
}
switch (type)
{
case MessageType.Command:
case MessageType.Encoded:
case MessageType.System:
case MessageType.Party:
break;
case MessageType.Guild:
if (currentProfile.IgnoreGuildMessages)
{
return;
}
break;
case MessageType.Alliance:
if (currentProfile.IgnoreAllianceMessages)
{
return;
}
break;
case MessageType.Spell:
{
//server hue color per default
if (!string.IsNullOrEmpty(text) && SpellDefinition.WordToTargettype.TryGetValue(text, out SpellDefinition spell))
{
if (currentProfile != null && currentProfile.EnabledSpellFormat && !string.IsNullOrWhiteSpace(currentProfile.SpellDisplayFormat))
{
ValueStringBuilder sb = new ValueStringBuilder(currentProfile.SpellDisplayFormat.AsSpan());
{
sb.Replace("{power}".AsSpan(), spell.PowerWords.AsSpan());
sb.Replace("{spell}".AsSpan(), spell.Name.AsSpan());
text = sb.ToString().Trim();
}
sb.Dispose();
}
//server hue color per default if not enabled
if (currentProfile != null && currentProfile.EnabledSpellHue)
{
if (spell.TargetType == TargetType.Beneficial)
{
hue = currentProfile.BeneficHue;
}
else if (spell.TargetType == TargetType.Harmful)
{
hue = currentProfile.HarmfulHue;
}
else
{
hue = currentProfile.NeutralHue;
}
}
}
goto case MessageType.Label;
}
default:
case MessageType.Focus:
case MessageType.Whisper:
case MessageType.Yell:
case MessageType.Regular:
case MessageType.Label:
case MessageType.Limit3Spell:
if (parent == null)
{
break;
}
TextObject msg = CreateMessage
(
text,
hue,
font,
unicode,
type,
textType
);
msg.Owner = parent;
if (parent is Item it && !it.OnGround)
{
msg.X = DelayedObjectClickManager.X;
msg.Y = DelayedObjectClickManager.Y;
msg.IsTextGump = true;
bool found = false;
for (LinkedListNode <Gump> gump = UIManager.Gumps.Last; gump != null; gump = gump.Previous)
{
Control g = gump.Value;
if (!g.IsDisposed)
{
switch (g)
{
case PaperDollGump paperDoll when g.LocalSerial == it.Container:
paperDoll.AddText(msg);
found = true;
break;
case ContainerGump container when g.LocalSerial == it.Container:
container.AddText(msg);
found = true;
break;
case TradingGump trade when trade.ID1 == it.Container || trade.ID2 == it.Container:
trade.AddText(msg);
found = true;
break;
}
}
if (found)
{
break;
}
}
}
parent.AddMessage(msg);
break;
}
MessageReceived.Raise
(
new MessageEventArgs
(
parent,
text,
name,
hue,
type,
font,
textType,
unicode,
lang
),
parent
);
}