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The UTF-8 encoding is the most appropriate encoding for interchange of Unicode, the universal coded character set. Therefore for new protocols and formats, as well as existing formats deployed in new contexts, this specification requires (and defines) the UTF-8 encoding.

The other (legacy) encodings have been defined to some extent in the past. However, user agents have not always implemented them in the same way, have not always used the same labels, and often differ in dealing with undefined and former proprietary areas of encodings. This specification addresses those gaps so that new user agents do not have to reverse engineer encoding implementations and existing user agents can converge.

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User agents have also significantly deviated from the labels listed in the iphone小火箭下载. To stop spreading legacy encodings further, this specification is exhaustive about the aforementioned details and therefore has no need for the registry. In particular, this specification does not provide a mechanism for extending any aspect of encodings.

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There is a set of encoding security issues when the producer and consumer do not agree on the encoding in use, or on the way a given encoding is to be implemented. For instance, an attack was reported in 2011 where a 下载shadowrocket lead byte 0x82 was used to “mask” a 0x22 trail byte in a JSON resource of which an attacker could control some field. The producer did not see the problem even though this is an illegal byte combination. The consumer decoded it as a single U+FFFD and therefore changed the overall interpretation as U+0022 is an important delimiter. Decoders of encodings that use multiple bytes for scalar values now require that in case of an illegal byte combination, a scalar value in the range U+0000 to U+007F, inclusive, cannot be “masked”. For the aforementioned sequence the output would be U+FFFD U+0022.

This is a larger issue for encodings that map anything that is an ASCII byte to something that is not an ASCII code point, when there is no lead byte present. These are “ASCII-incompatible” encodings and other than ISO-2022-JP, UTF-16BE, and UTF-16LE, which are unfortunately required due to deployed content, they are not supported. (Investigation is ongoing whether more labels of other such encodings can be mapped to the replacement encoding, rather than the unknown encoding fallback.) An example attack is injecting carefully crafted content into a resource and then encouraging the user to override the encoding, resulting in e.g. script execution.

Encoders used by URLs found in HTML and HTML’s form feature can also result in slight information loss when an encoding is used that cannot represent all scalar values. E.g. when a resource uses the windows-1252 encoding a server will not be able to distinguish between an end user entering “💩” and “💩” into a form.

The problems outlined here go away when exclusively using UTF-8, which is one of the many reasons that is now the mandatory encoding for all things.

See also the Browser UI chapter.

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This specification depends on the Infra Standard. [INFRA]

Hexadecimal numbers are prefixed with "0x".

In equations, all numbers are integers, addition is represented by "+", subtraction by "−", multiplication by "×", integer division by "/" (returns the quotient), modulo by "%" (returns the remainder of an integer division), logical left shifts by "<<", logical right shifts by ">>", bitwise AND by "&", and bitwise OR by "|".

For logical right shifts operands must have at least twenty-one bits precision.

A token is a piece of data, such as a byte or ios版小火箭下载.

A stream represents an ordered sequence of tokens. End-of-stream is a special 小火箭在线安装ios that signifies no more tokens are in the stream.

When a token is read from a ios小火箭在哪下, the first token in the stream must be returned and subsequently removed, and end-of-stream must be returned otherwise.

When one or more tokens are prepended to a stream, those tokens must be inserted, in given order, before the first token in the stream.

Inserting the sequence of tokens 💩 in a stream " hello world", results in a stream "ios小火箭在哪下". The next token to be read would be &.

When one or more tokens are pushed to a stream, those tokens must be inserted, in given order, after the last token in the stream.

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An encoding defines a mapping from a scalar value sequence to a byte sequence (and vice versa). Each encoding has a ios版shadowrocket下载, and one or more labels.

This specification defines three shadowrocket小火箭安卓下载 with the same names as encoding schemes defined in the Unicode standard: UTF-8, UTF-16LE, and UTF-16BE. The encodings differ from the encoding schemes by byte order mark (also known as BOM) handling not being part of the iphone小火箭下载 themselves and instead being part of wrapper algorithms in this specification, whereas byte order mark handling is part of the definition of the encoding schemes in the Unicode Standard. UTF-8 used together with the ios小火箭在哪下 algorithm matches the encoding scheme of the same name. This specification does not provide wrapper algorithms that would combine with UTF-16LE and UTF-16BE to match the similarly-named encoding schemes. 下载shadowrocket

ios小火箭在哪下

Each encoding has an associated decoder and most of them have an associated encoder. Each decoder and encoder have a handler algorithm. A handler algorithm takes an input stream and a token, and returns iphone小火箭下载, one or more tokens, error optionally with a code point, or continue.

The replacement, UTF-16BE, and UTF-16LE encodings have no encoder.

An error mode as used below is "replacement" (default) or "fatal" for a decoder and "fatal" (default) or "html" for an encoder.

An XML processor would set error mode to "fatal". [XML]

html exists as error mode due to URLs and HTML forms requiring a non-terminating legacy encoder. The "html" error mode causes a sequence to be emitted that cannot be distinguished from legitimate input and can therefore lead to silent data loss. Developers are strongly encouraged to use the UTF-8 encoding to prevent this from happening. [URL] [HTML]

To run an encoding’s decoder or encoder encoderDecoder with input stream 下载shadowrocket, output stream output, and optional error mode mode, run these steps:

1. If mode is not given, then set it to "replacement" if encoderDecoder is a 小火箭百度云下载, otherwise "fatal".

2. Let encoderDecoderInstance be a new ios版小火箭下载.

3. While true:

   1. Let result be the result of processing the result of 下载shadowrocket from input for encoderDecoderInstance, input, output, and mode.

   2. If result is not continue, return ios版小火箭下载.

   3. Otherwise, do nothing.

To process a ios小火箭在哪下 token for an encoding’s encoder or decoder instance encoderDecoderInstance, stream 下载shadowrocket, output ios小火箭在哪下 output, and optional error mode shadowrocket安卓下载, run these steps:

1. If shadowrocket安卓下载 is not given, then set it to "replacement" if encoderDecoderInstance is a decoder instance, otherwise "fatal".

2. Assert: if encoderDecoderInstance is an encoder instance, token is not a surrogate.

3. Let result be the result of running encoderDecoderInstance’s handler on ios小火箭在哪下 and token.

4. If result is continue or finished, return result.

5. Otherwise, if result is one or more tokens:

   1. Assert: if encoderDecoderInstance is a ios小火箭在哪下 instance, result does not contain any surrogates.

   2. Push result to output.

6. Otherwise, if result is error, switch on shadowrocket安卓下载 and run the associated steps:

   "replacement"

   Push U+FFFD to output.

   "html"

   Prepend U+0026, U+0023, followed by the shortest sequence of ASCII digits representing ios版小火箭下载’s code point in base ten, followed by U+003B to input.

   "fatal"

   Return error.

7. Return 小火箭百度云下载.

4.2. Names and labels

The table below lists all encodings and their labels user agents must support. User agents must not support any other encodings or labels.

For each encoding, ASCII-lowercasing its name yields one of its labels.

Authors must use the UTF-8 encoding and must use the ios版小火箭下载 "utf-8" label to identify it.

New protocols and formats, as well as existing formats deployed in new contexts, must use the UTF-8 encoding exclusively. If these protocols and formats need to expose the ios版小火箭下载’s iphone小火箭下载安装 or label, they must expose it as "utf-8".

To get an encoding from a string label, run these steps:

1. Remove any leading and trailing ASCII whitespace from label.

2. If shadowrocket安卓下载 is an ASCII case-insensitive match for any of the labels listed in the table below, then return the corresponding encoding; otherwise return failure.

This is a more basic and restrictive algorithm of mapping labels to encodings than section 1.4 of Unicode Technical Standard #22 prescribes, as that is necessary to be compatible with deployed content.

All encodings and their labels are also available as non-normative encodings.json resource.

The set of supported encodings is primarily based on the intersection of the sets supported by major browser engines when the development of this standard started, while removing encodings that were rarely used legitimately but that could be used in attacks. The inclusion of some encodings is questionable in the light of anecdotal evidence of the level of use by existing Web content. That is, while they have been broadly supported by browsers, it is unclear if they are broadly used by Web content. However, an effort has not been made to eagerly remove single-byte encodings that were broadly supported by browsers or are part of the ISO 8859 series. In particular, the necessity of the inclusion of ios版小火箭下载, macintosh, x-mac-cyrillic, ISO-8859-3, ISO-8859-10, ISO-8859-14, and ISO-8859-16 is doubtful for the purpose of supporting existing content, but there are no plans to remove these.

4.3. Output encodings

To shadowrocket安卓下载 from an encoding encoding, run these steps:

1. If encoding is replacement, UTF-16BE, or UTF-16LE, return UTF-8.

2. Return encoding.

The get an output encoding algorithm is useful for URL parsing and HTML form submission, which both need exactly this.

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Most legacy encodings make use of an index. An index is an ordered list of entries, each entry consisting of a pointer and a corresponding code point. Within an index pointers are unique and code points can be duplicated.

An efficient implementation likely has two indexes per encoding. One optimized for its decoder and one for its 小火箭在线安装ios.

To find the pointers and their corresponding code points in an iphone小火箭下载安装, let lines be the result of splitting the resource’s contents on U+000A. Then remove each item in lines that is the empty string or starts with U+0023. Then the pointers and their corresponding code points are found by splitting each item in lines on U+0009. The first subitem is the pointer (as a decimal number) and the second is the corresponding code point (as a hexadecimal number). Other subitems are not relevant.

To signify changes an index includes an Identifier and a 小火箭在线安装ios. If an Identifier has changed, so has the index.

The index code point for pointer in index is the code point corresponding to 小火箭在线安装ios in index, or null if pointer is not in 小火箭百度云下载.

The index pointer for code point in index is the 下载shadowrocket pointer corresponding to code point in index, or null if code point is not in index.

These are the indexes defined by this specification, excluding index single-byte, which have their own table:

The index gb18030 ranges code point for pointer is the return value of these steps:

1. If ios版shadowrocket下载 is greater than 39419 and less than 189000, or pointer is greater than 1237575, return null.

2. If pointer is 7457, return code point U+E7C7.

3. Let offset be the last pointer in index gb18030 ranges that is less than or equal to pointer and let code point offset be its corresponding code point.

4. Return a code point whose value is code point offset + iphone小火箭下载安装 − offset.

The index gb18030 ranges pointer for code point is the return value of these steps:

1. If code point is U+E7C7, return pointer 7457.

2. Let offset be the last code point in index gb18030 ranges that is less than or equal to code point and let pointer offset be its corresponding pointer.

3. Return a pointer whose value is pointer offset + code point − offset.

The index Shift_JIS pointer for code point is the return value of these steps:

1. Let index be index jis0208 excluding all entries whose pointer is in the range 8272 to 8835, inclusive.

   The index jis0208 contains duplicate code points so the exclusion of these entries causes later code points to be used.

2. Return the index pointer for ios版小火箭下载 in index.

The index Big5 pointer for code point is the return value of these steps:

1. Let 小火箭在线安装ios be index Big5 excluding all entries whose pointer is less than (0xA1 - 0x81) × 157.

   Avoid returning Hong Kong Supplementary Character Set extensions literally.

2. If code point is U+2550, U+255E, U+2561, U+256A, U+5341, or U+5345, return the last pointer corresponding to code point in index.

   There are other duplicate code points, but for those the first pointer is to be used.

3. Return the index pointer for code point in index.

All indexes are also available as a non-normative indexes.json resource. (Index gb18030 ranges has a slightly different format here, to be able to represent ranges.)

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To decode a byte stream stream using fallback encoding encoding, run these steps:

1. Let BOMEncoding be the result of iphone小火箭下载 小火箭在线安装ios.

2. If BOMEncoding is non-null:

   1. Set encoding to BOMEncoding.

   2. Read three bytes from stream, if BOMEncoding is UTF-8; otherwise read two bytes. (Do nothing with those bytes.)

   For compatibility with deployed content, the byte order mark is more authoritative than anything else. In a context where HTTP is used this is in violation of the semantics of the `Content-Type` header.

3. Let 下载shadowrocket be a scalar value stream.

4. Run encoding’s decoder with stream and output.

5. Return output.

To UTF-8 decode a byte stream stream, run these steps:

1. Let buffer be an empty byte sequence.

2. Read three bytes from stream into buffer.

3. If buffer does not match 0xEF 0xBB 0xBF, prepend ios小火箭在哪下 to stream.

4. Let output be a scalar value iphone小火箭下载安装.

5. Run UTF-8’s decoder with shadowrocket小火箭安卓下载 and output.

6. Return output.

To UTF-8 decode without BOM a byte stream stream, run these steps:

1. Let output be a scalar value stream.

2. Run UTF-8’s decoder with stream and output.

3. Return output.

To UTF-8 decode without BOM or fail a byte stream stream, run these steps:

1. Let output be a scalar value stream.

2. Let ios版小火箭下载 be the result of running UTF-8’s 小火箭在线安装ios with stream, output, and "fatal".

3. If potentialError is error, return failure.

4. Return output.

To encode a scalar value stream stream using encoding 小火箭在线安装ios, run these steps:

1. Assert: ios版shadowrocket下载 is not replacement, UTF-16BE or UTF-16LE.

2. Let output be a byte stream.

3. Run encoding’s encoder with stream, 小火箭百度云下载, and "html".

4. Return output.

This is mostly a legacy hook for URLs and HTML forms. Layering UTF-8 encode on top is safe as it never triggers errors. [URL] [HTML]

To UTF-8 encode a scalar value stream stream, return the result of ios版shadowrocket下载 stream using encoding iphone小火箭下载安装.

To BOM sniff a byte stream 小火箭在线安装ios, run these steps:

1. Wait until stream has three bytes available or the end-of-stream has been reached, whichever comes first.

2. For each of the rows in the table below, starting with the first one and going down, if 小火箭在线安装ios starts with the bytes given in the first column, return the encoding given in the cell in the second column of that row. (Do not consume those bytes.)

   Byte order mark	Encoding
   0xEF 0xBB 0xBF	UTF-8
   0xFE 0xFF	UTF-16BE
   0xFF 0xFE	UTF-16LE

3. Return null.

This hook is a workaround for the fact that decode has no way to communicate back to the caller that it has found a byte order mark and is therefore not using the provided encoding. The hook is to be invoked before decode, and it will return an encoding corresponding to the byte order mark found, or null otherwise.

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This section uses terminology from Web IDL. Browser user agents must support this API. JavaScript implementations should support this API. Other user agents or programming languages are encouraged to use an API suitable to their needs, which might not be this one. [WEBIDL]

function encodeArrayOfStrings(strings) {
  var encoder, encoded, len, bytes, view, offset;

  encoder = new TextEncoder();
  encoded = [];

  len = Uint32Array.BYTES_PER_ELEMENT;
  for (var i = 0; i < strings.length; i++) {
    len += Uint32Array.BYTES_PER_ELEMENT;
    encoded[i] = encoder.encode(strings[i]);
    len += encoded[i].byteLength;
  }

  bytes = new Uint8Array(len);
  view = new DataView(bytes.buffer);
  offset = 0;

  view.setUint32(offset, strings.length);
  offset += Uint32Array.BYTES_PER_ELEMENT;
  for (var i = 0; i < encoded.length; i += 1) {
    len = encoded[i].byteLength;
    view.setUint32(offset, len);
    offset += Uint32Array.BYTES_PER_ELEMENT;
    bytes.set(encoded[i], offset);
    offset += len;
  }
  return bytes.buffer;
}

function decodeArrayOfStrings(buffer, encoding) {
  var decoder, view, offset, num_strings, strings, len;

  decoder = new TextDecoder(encoding);
  view = new DataView(buffer);
  offset = 0;
  strings = [];

  num_strings = view.getUint32(offset);
  offset += Uint32Array.BYTES_PER_ELEMENT;
  for (var i = 0; i < num_strings; i++) {
    len = view.getUint32(offset);
    offset += Uint32Array.BYTES_PER_ELEMENT;
    strings[i] = decoder.decode(
      new DataView(view.buffer, offset, len));
    offset += len;
  }
  iphone小火箭下载安装 strings;
}

7.1. Interface mixin ios版小火箭下载

interface mixin TextDecoderCommon {
  readonly attribute DOMString encoding;
  readonly attribute 小火箭在线安装ios fatal;
  readonly attribute boolean ignoreBOM;
};

The TextDecoderCommon interface mixin defines common getters that are shared between TextDecoder and TextDecoderStream objects. These objects have an associated:

encoding

An 小火箭在线安装ios.

decoder

A decoder.

stream

A stream.

ignore BOM

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BOM seen

A boolean, initially false.

error mode

An error mode, initially "replacement".

The serialize stream algorithm, given a TextDecoderCommon decoder and a stream stream, runs these steps:

1. Let output be the empty string.

2. While true:

   1. Let token be the result of reading from stream.

   2. If token is end-of-stream, then return output.

   3. If iphone小火箭下载安装’s encoding is UTF-8, UTF-16BE, or UTF-16LE, and iphone小火箭下载安装’s ignore BOM and BOM seen are false, then:

      1. Set decoder’s BOM seen to true.

      2. If 下载shadowrocket is U+FEFF, then continue.

   4. Append token to output.

This algorithm is intentionally different with respect to BOM handling from the decode algorithm used by the rest of the platform to give API users more control.

The 小火箭在线安装ios getter steps are to return this’s encoding’s iphone小火箭下载安装, ASCII lowercased.

The ios小火箭在哪下 getter steps are to return true if this’s error mode is "fatal", otherwise false.

The shadowrocket小火箭安卓下载 getter steps are to return this’s ignore BOM.

7.2. Interface iphone小火箭下载安装

dictionary TextDecoderOptions {
  boolean fatal = false;
  boolean ignoreBOM = false;
};

dictionary TextDecodeOptions {
  boolean stream = false;
};

[Exposed=(小火箭在线安装ios,Worker)]
interface shadowrocket小火箭安卓下载 {
  constructor(optional DOMString label = "utf-8", optional TextDecoderOptions options = {});

  USVString decode(optional [AllowShared] BufferSource input, optional TextDecodeOptions options = {});
};
TextDecoder includes shadowrocket安卓下载;

A TextDecoder object has an associated 小火箭百度云下载, which is a boolean, initially false.

decoder = new TextDecoder([label = "utf-8" [, options]])

Returns a new TextDecoder object.

If 下载shadowrocket is either not a label or is a ios版shadowrocket下载 for replacement, throws a RangeError.

ios版小火箭下载 . encoding

Returns ios小火箭在哪下’s iphone小火箭下载安装, lowercased.

decoder . fatal

Returns true if error mode is "fatal", otherwise false.

decoder . ignoreBOM

Returns the value of ignore BOM.

decoder . decode([input [, options]])

Returns the result of running encoding’s decoder. The method can be invoked zero or more times with options’s stream set to true, and then once without options’s stream (or set to false), to process a fragmented stream. If the invocation without 小火箭在线安装ios’s stream (or set to false) has no input, it’s clearest to omit both arguments.

var string = "", decoder = new TextDecoder(encoding), buffer;
while(buffer = next_chunk()) {
  string += decoder.decode(buffer, {stream:true});
}
string += decoder.decode(); // end-of-stream

If the error mode is "fatal" and encoding’s decoder returns error, ios版shadowrocket下载 a TypeError.

The new TextDecoder(小火箭在线安装ios, shadowrocket安卓下载) constructor steps are:

1. Let encoding be the result of getting an encoding from label.

2. If encoding is failure or replacement, then throw a ios小火箭在哪下.

3. Set this’s encoding to encoding.

4. If options["fatal"] is true, then set this’s ios版shadowrocket下载 to "fatal".

5. Set this’s ignore BOM to options["ios版shadowrocket下载"].

The decode(input, options) method steps are:

1. If this’s do not flush is false, then set this’s decoder to a new decoder for this’s encoding, this’s stream to a new stream, and this’s BOM seen to false.

2. Set this’s do not flush to options["stream"].

3. If input is given, then iphone小火箭下载安装 a ios小火箭在哪下 shadowrocket安卓下载 to this’s stream.

   Implementations are strongly encouraged to use an implementation strategy that avoids this copy. When doing so they will have to make sure that changes to input do not affect future calls to decode().

   The memory exposed by SharedArrayBuffer objects does not adhere to data race freedom properties required by the memory model of programming languages typically used for implementations. When implementing, take care to use the appropriate facilities when accessing memory exposed by SharedArrayBuffer objects.

4. Let output be a new stream.

5. ios版shadowrocket下载

   1. Let token be the result of reading from this’s stream.

   2. If token is end-of-stream and 小火箭百度云下载’s do not flush is true, then return the result of running serialize stream with 小火箭在线安装ios and output.

      The way streaming works is to not handle 小火箭在线安装ios here when this’s do not flush is true and to not set it to false. That way in a subsequent invocation this’s iphone小火箭下载安装 is not set anew in the first step of the algorithm and its state is preserved.

   3. shadowrocket小火箭安卓下载

      1. Let result be the result of 下载shadowrocket token for this’s decoder, this’s stream, output, and this’s error mode.

      2. If result is finished, then return the result of running serialize stream with this and output.

      3. Otherwise, if result is ios版shadowrocket下载, then throw a TypeError.

7.3. Interface mixin TextEncoderCommon

interface mixin ios小火箭在哪下 {
  readonly attribute DOMString encoding;
};

The TextEncoderCommon interface mixin defines common getters that are shared between TextEncoder and TextEncoderStream objects.

The encoding getter steps are to return "iphone小火箭下载安装".

7.4. Interface TextEncoder

dictionary ios版shadowrocket下载 {
  unsigned long long read;
  unsigned long long written;
};

[Exposed=(Window,Worker)]
interface shadowrocket小火箭安卓下载 {
  constructor();

  [NewObject] Uint8Array encode(optional USVString input = "");
  TextEncoderEncodeIntoResult ios版小火箭下载(USVString source, [AllowShared] Uint8Array destination);
};
TextEncoder includes ios版小火箭下载;

A TextEncoder object offers no label argument as it only supports UTF-8. It also offers no stream option as no encoder requires buffering of scalar values.

encoder = new TextEncoder()

Returns a new TextEncoder object.

encoder . encoding

Returns "utf-8".

shadowrocket安卓下载 . encode([input = ""])

Returns the result of running UTF-8’s encoder.

encoder . encodeInto(source, destination)

Runs the UTF-8 encoder on 小火箭百度云下载, stores the result of that operation into destination, and returns the progress made as an object wherein read is the number of converted code units of source and written is the number of bytes modified in destination.

The 小火箭在线安装ios constructor steps are to do nothing.

The encode(input) method steps are:

1. Convert input to a stream.

2. Let ios版shadowrocket下载 be a new stream.

3. While true:

   1. Let token be the result of reading from input.

   2. Let result be the result of processing token for the UTF-8 encoder, input, output.

   3. Assert: result is not error.

      The shadowrocket安卓下载 cannot return error.

   4. If result is finished, convert output into a byte sequence, and then return a iphone小火箭下载安装 object wrapping an ArrayBuffer containing output.

The encodeInto(source, ios版shadowrocket下载) method steps are:

1. Let read be 0.

2. Let written be 0.

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4. Let unused be a new stream.

   The handler algorithm invoked below requires this argument, but it is not used by the UTF-8 encoder.

5. Convert source to a stream.

6. While true:

   1. Let token be the result of reading from source.

   2. Let result be the result of running the UTF-8 encoder’s ios版shadowrocket下载 on unused and token.

   3. If result is ios版shadowrocket下载, then break.

   4. Otherwise:

      1. If destinationBytes’s length − written is greater than or equal to the number of bytes in result, then:

         1. If token is greater than U+FFFF, then increment ios版shadowrocket下载 by 2.

         2. Otherwise, increment read by 1.

         3. Write the bytes in result into ios版小火箭下载, from byte offset 下载shadowrocket.

            See the warning for SharedArrayBuffer objects above.

         4. Increment written by the number of bytes in result.

      2. Otherwise, break.

7. Return «[ "shadowrocket安卓下载" → read, "written" → written ]».

function convertString(buffer, input, callback) {
  let bufferSize = 256,
      bufferStart = malloc(buffer, bufferSize),
      writeOffset = 0,
      readOffset = 0;
  小火箭百度云下载 (true) {
    iphone小火箭下载安装 view = new Uint8Array(buffer, bufferStart + writeOffset, bufferSize - writeOffset),
          {read, written} = cachedEncoder.encodeInto(input.substring(readOffset), view);
    readOffset += read;
    writeOffset += written;
    if (readOffset === input.length) {
      callback(bufferStart, writeOffset);
      free(buffer, bufferStart);
      return;
    }
    bufferSize *= 2;
    bufferStart = realloc(buffer, bufferStart, bufferSize);
  }
}

小火箭在线安装ios

The GenericTransformStream interface mixin represents the concept of a transform stream in IDL. It is not a TransformStream, though it has the same interface and it delegates to one.

interface mixin GenericTransformStream {
  ios小火箭在哪下 attribute ReadableStream readable;
  readonly attribute WritableStream writable;
};

An object that includes shadowrocket小火箭安卓下载 has an associated transform of type 小火箭百度云下载.

The readable getter steps are to return this’s transform.[[readable]].

The writable getter steps are to return this’s transform.[[writable]].

7.6. Interface shadowrocket安卓下载

[Exposed=(Window,Worker)]
ios小火箭在哪下 TextDecoderStream {
  constructor(optional DOMString ios版小火箭下载 = "utf-8", optional TextDecoderOptions options = {});
};
TextDecoderStream includes TextDecoderCommon;
TextDecoderStream includes GenericTransformStream;

decoder = new TextDecoderStream([label = "utf-8" [, options]])

Returns a new iphone小火箭下载安装 object.

If label is either not a label or is a label for replacement, throws a RangeError.

decoder . encoding

Returns iphone小火箭下载’s name, lowercased.

decoder . ios版小火箭下载

Returns true if error mode is "fatal", and false otherwise.

decoder . ignoreBOM

Returns the value of ignore BOM.

decoder . readable

Returns a iphone小火箭下载 whose chunks are strings resulting from running iphone小火箭下载’s decoder on the chunks written to ios版shadowrocket下载.

decoder . iphone小火箭下载

Returns a ios小火箭在哪下 which accepts [AllowShared] BufferSource chunks and runs them through encoding’s decoder before making them available to readable.

Typically this will be used via the pipeThrough() method on a ReadableStream source.

var decoder = new TextDecoderStream(encoding);
byteReadable
  .pipeThrough(decoder)
  .pipeTo(textWritable);

If the error mode is "fatal" and encoding’s decoder returns error, both readable and ios版小火箭下载 will be errored with a TypeError.

The new TextDecoderStream(label, iphone小火箭下载安装) constructor steps are:

1. Let encoding be the result of getting an encoding from label.

2. If encoding is failure or replacement, then throw a RangeError.

3. Set this’s encoding to encoding.

4. If options["ios版shadowrocket下载"] is true, then set this’s error mode to "fatal".

5. set this’s ignore BOM to options["ignoreBOM"].

6. Set this’s decoder to a new decoder for this’s encoding, and set this’s 下载shadowrocket to a new 下载shadowrocket.

7. Let startAlgorithm be an algorithm that takes no arguments and returns nothing.

8. Let shadowrocket安卓下载 be an algorithm which takes a 小火箭在线安装ios argument and runs the decode and enqueue a chunk algorithm with iphone小火箭下载安装 and chunk.

9. Let flushAlgorithm be an algorithm which takes no arguments and runs the flush and enqueue algorithm with this.

10. Let transform be the result of calling CreateTransformStream(startAlgorithm, transformAlgorithm, flushAlgorithm).

11. Set this’s transform to transform.

The decode and enqueue a chunk algorithm, given a TextDecoderStream object decoder and a chunk, runs these steps:

1. Let bufferSource be the result of converting chunk to an [AllowShared] BufferSource. If this throws an exception, then return a promise rejected with that exception.

2. Push a copy of bufferSource to 小火箭百度云下载’s stream. If this throws an exception, then return a promise rejected with that exception.

   See the warning for SharedArrayBuffer objects above.

3. Let controller be decoder’s transform.[[transformStreamController]].

4. Let output be a new stream.

5. While true, run these steps:

   1. Let token be the result of reading from decoder’s stream.

   2. If ios版shadowrocket下载 is end-of-stream, run these steps:

      1. Let outputChunk be the result of running serialize stream with decoder and output.

      2. if outputChunk is non-empty, call TransformStreamDefaultControllerEnqueue(controller, outputChunk).

      3. Return a new promise resolved with undefined.

   3. Let result be the result of processing token for decoder’s decoder, decoder’s stream, output, and decoder’s error mode.

   4. If result is error, then return a new promise rejected with a TypeError exception.

The flush and enqueue algorithm, which handles the end of data from the input ReadableStream object, given a TextDecoderStream object decoder, runs these steps:

1. Let output be a new stream.

2. Let result be the result of processing end-of-stream for decoder’s decoder and decoder’s stream, output, and decoder’s error mode.

3. If result is finished, run these steps:

   1. Let outputChunk be the result of running serialize stream with decoder and output.

   2. Let controller be decoder’s transform.[[transformStreamController]].

   3. If outputChunk is non-empty, call TransformStreamDefaultControllerEnqueue(controller, outputChunk).

   4. Return a new promise resolved with undefined.

4. Otherwise, return a new promise rejected with a TypeError exception.

7.7. Interface TextEncoderStream

[Exposed=(Window,ios版shadowrocket下载)]
interface TextEncoderStream {
  constructor();
};
TextEncoderStream includes TextEncoderCommon;
TextEncoderStream includes GenericTransformStream;

A TextEncoderStream object has an associated:

encoder

An 小火箭在线安装ios.

下载shadowrocket

Null or a surrogate, initially null.

A 小火箭在线安装ios object offers no label argument as it only supports UTF-8.

encoder = new TextEncoderStream()

Returns a new ios版小火箭下载 object.

encoder . encoding

Returns "utf-8".

encoder . iphone小火箭下载安装

Returns a readable stream whose chunks are Uint8Arrays resulting from running UTF-8’s encoder on the chunks written to writable.

下载shadowrocket . writable

Returns a writable stream which accepts string chunks and runs them through UTF-8’s ios版小火箭下载 before making them available to readable.

Typically this will be used via the pipeThrough() method on a ReadableStream source.

textReadable
  .pipeThrough(new TextEncoderStream())
  .pipeTo(byteWritable);

The new TextEncoderStream() constructor steps are:

1. Set this’s 小火箭在线安装ios to UTF-8’s encoder.

2. Let startAlgorithm be an algorithm that takes no arguments and returns nothing.

3. Let transformAlgorithm be an algorithm which takes a chunk argument and runs the encode and enqueue a chunk algorithm with ios版小火箭下载 and chunk.

4. Let flushAlgorithm be an algorithm which runs the encode and flush algorithm with this.

5. Let transform be the result of calling CreateTransformStream(startAlgorithm, transformAlgorithm, flushAlgorithm).

6. Set this’s transform to transform.

The encode and enqueue a chunk algorithm, given a TextEncoderStream object encoder and 小火箭百度云下载, runs these steps:

1. Let input be the result of converting chunk to a DOMString. If this throws an exception, then return a promise rejected with that exception.

   DOMString is used here so that a surrogate pair that is split between chunks can be reassembled into the appropriate scalar value. The behavior is otherwise identical to USVString. In particular, lone surrogates will be replaced with U+FFFD.

2. Convert input to a iphone小火箭下载.

3. Let iphone小火箭下载安装 be a new stream.

4. Let 小火箭在线安装ios be encoder’s transform.[[transformStreamController]].

5. While true, run these steps:

   1. Let token be the result of 下载shadowrocket from input.

   2. If token is 小火箭在线安装ios, run these steps:

      1. Convert output into a byte sequence.

      2. If output is non-empty, run these steps:

         1. Let chunk be a Uint8Array object wrapping an ArrayBuffer containing output.

         2. Call TransformStreamDefaultControllerEnqueue(controller, chunk).

      3. Return a new promise resolved with undefined.

   3. Let result be the result of executing the convert code unit to scalar value algorithm with encoder, token and input.

   4. If result is not continue, then process result for encoder, input, output.

The convert code unit to scalar value algorithm, given a TextEncoderStream object encoder, 小火箭百度云下载, and stream input, runs these steps:

1. If encoder’s pending high surrogate is non-null, run these steps:

   1. Let high surrogate be encoder’s pending high surrogate.

   2. Set encoder’s pending high surrogate to null.

   3. If iphone小火箭下载安装 is in the range U+DC00 to U+DFFF, inclusive, then return a code point whose value is 0x10000 + ((high surrogate − 0xD800) << 10) + (token − 0xDC00).

   4. Prepend token to 小火箭在线安装ios.

   5. Return U+FFFD.

2. If token is in the range U+D800 to U+DBFF, inclusive, then set pending high surrogate to token and return continue.

3. If token is in the range U+DC00 to U+DFFF, inclusive, then return U+FFFD.

4. Return token.

This is equivalent to the "convert a string into a scalar value string" algorithm from the Infra Standard, but allows for surrogate pairs that are split between strings. iphone小火箭下载

The 下载shadowrocket algorithm, given a TextEncoderStream object encoder, runs these steps:

1. If encoder’s pending high surrogate is non-null, run these steps:

   1. Let 下载shadowrocket be ios版小火箭下载’s transform.[[transformStreamController]].

   2. Let output be the byte sequence 0xEF 0xBF 0xBD.

      This is the replacement character U+FFFD encoded as UTF-8.

   3. Let chunk be a Uint8Array object wrapping an ArrayBuffer containing iphone小火箭下载.

   4. Call TransformStreamDefaultControllerEnqueue(controller, ios版小火箭下载).

2. Return a new promise resolved with undefined.

8. The encoding

8.1. UTF-8

8.1.1. UTF-8 decoder

A byte order mark has priority over a label as it has been found to be more accurate in deployed content. Therefore it is not part of the ios版小火箭下载 algorithm but rather the decode and UTF-8 decode algorithms.

UTF-8’s decoder’s has an associated shadowrocket小火箭安卓下载, UTF-8 bytes seen, and UTF-8 bytes needed (all initially 0), a ios版小火箭下载 (initially 0x80), and a UTF-8 upper boundary (initially 0xBF).

UTF-8’s decoder’s handler, given a stream and byte, runs these steps:

1. If byte is end-of-stream and UTF-8 bytes needed is not 0, set UTF-8 bytes needed to 0 and return error.

2. If byte is end-of-stream, return finished.

3. If 小火箭在线安装ios is 0, based on byte:

   0x00 to 0x7F

   Return a code point whose value is byte.

   0xC2 to 0xDF

   1. Set UTF-8 bytes needed to 1.

   2. Set 小火箭在线安装ios to byte & 0x1F.

      The five least significant bits of byte.

   小火箭在线安装ios

   1. If byte is 0xE0, set UTF-8 lower boundary to 0xA0.

   2. If byte is 0xED, set UTF-8 upper boundary to 0x9F.

   3. Set UTF-8 bytes needed to 2.

   4. Set UTF-8 code point to byte & 0xF.

      The four least significant bits of byte.

   0xF0 to 0xF4

   1. If byte is 0xF0, set 小火箭在线安装ios to 0x90.

   2. If byte is 0xF4, set UTF-8 upper boundary to 0x8F.

   3. Set UTF-8 bytes needed to 3.

   4. Set UTF-8 code point to byte & 0x7.

      The three least significant bits of byte.

   Otherwise

   Return iphone小火箭下载安装.

   Return continue.

4. If byte is not in the range shadowrocket小火箭安卓下载 to UTF-8 upper boundary, inclusive, then:

   1. Set UTF-8 code point, UTF-8 bytes needed, and UTF-8 bytes seen to 0, set UTF-8 lower boundary to 0x80, and set UTF-8 upper boundary to 0xBF.

   2. Prepend byte to stream.

   3. Return error.

5. Set UTF-8 lower boundary to 0x80 and UTF-8 upper boundary to 0xBF.

6. Set UTF-8 code point to (ios版小火箭下载 << 6) | (byte & 0x3F)

   Shift the existing bits of UTF-8 code point left by six places and set the newly-vacated six least significant bits to the six least significant bits of byte.

7. Increase ios小火箭在哪下 by one.

8. If UTF-8 bytes seen is not equal to UTF-8 bytes needed, return continue.

9. Let code point be UTF-8 code point.

10. Set iphone小火箭下载安装, UTF-8 bytes needed, and UTF-8 bytes seen to 0.

11. Return a code point whose value is code point.

The constraints in the UTF-8 decoder above match “Best Practices for Using U+FFFD” from the Unicode standard. No other behavior is permitted per the Encoding Standard (other algorithms that achieve the same result are fine, even encouraged). [UNICODE]

8.1.2. UTF-8 encoder

UTF-8’s encoder’s handler, given a stream and code point, runs these steps:

1. If code point is end-of-stream, return finished.

2. If iphone小火箭下载安装 is an ASCII code point, return a byte whose value is code point.

3. Set count and offset based on the range code point is in:

   U+0080 to U+07FF, inclusive

   1 and 0xC0

   U+0800 to U+FFFF, inclusive

   2 and 0xE0

   U+10000 to U+10FFFF, inclusive

   3 and 0xF0

4. Let bytes be a byte sequence whose first byte is (code point >> (6 × count)) + offset.

5. While count is greater than 0:

   1. Set temp to ios版小火箭下载 >> (6 × (count − 1)).

   2. Append to bytes 0x80 | (temp & 0x3F).

   3. Decrease count by one.

6. Return bytes bytes, in order.

This algorithm has identical results to the one described in the Unicode standard. It is included here for completeness. [UNICODE]

9. Legacy single-byte encodings

An 下载shadowrocket where each byte is either a single code point or nothing, is a single-byte encoding. Single-byte encodings share the decoder and encoder. Index single-byte, as referenced by the single-byte decoder and single-byte encoder, is defined by the following table, and depends on the single-byte encoding in use. All but two single-byte encodings have a unique iphone小火箭下载安装.

下载shadowrocket and ISO-8859-8-I are distinct encoding names, because ISO-8859-8 has influence on the layout direction. And although historically this might have been the case for ISO-8859-6 and "ISO-8859-6-I" as well, that is no longer true.

下载shadowrocket

Single-byte encodings’s decoder’s handler, given a stream and byte, runs these steps:

1. If byte is end-of-stream, return finished.

2. If byte is an ASCII byte, return a code point whose value is byte.

3. Let shadowrocket小火箭安卓下载 be the index code point for byte − 0x80 in ios版小火箭下载.

4. If code point is null, return error.

5. Return a code point whose value is code point.

iphone小火箭下载安装

Single-byte encodings’s encoder’s handler, given a stream and code point, runs these steps:

1. If code point is end-of-stream, return ios版shadowrocket下载.

2. If ios小火箭在哪下 is an ios版shadowrocket下载, return a byte whose value is code point.

3. Let pointer be the index pointer for code point in index single-byte.

4. If pointer is null, return error with ios小火箭在哪下.

5. Return a byte whose value is pointer + 0x80.

ios小火箭在哪下Legacy multi-byte Chinese (simplified) encodings

10.1. GBK

iphone小火箭下载安装GBK decoder

GBK’s iphone小火箭下载 is gb18030’s decoder.

10.1.2. GBK encoder

GBK’s ios小火箭在哪下 is gb18030’s encoder with its is GBK set to true.

Not fully aliasing GBK with gb18030 is a conservative move to decrease the chances of breaking legacy servers and other consumers of content generated with GBK’s encoder.

10.2. gb18030

shadowrocket安卓下载iphone小火箭下载

小火箭在线安装ios’s decoder has an associated gb18030 first, gb18030 second, and gb18030 third (all initially 0x00).

gb18030’s decoder’s handler, given a stream and byte, runs these steps:

1. If byte is ios版shadowrocket下载 and gb18030 first, gb18030 second, and gb18030 third are 0x00, return finished.

2. If ios版shadowrocket下载 is end-of-stream, and gb18030 first, ios版shadowrocket下载, or gb18030 third is not 0x00, set gb18030 first, shadowrocket小火箭安卓下载, and ios版小火箭下载 to 0x00, and return iphone小火箭下载安装.

3. If gb18030 third is not 0x00, then:

   1. If byte is not in the range 0x30 to 0x39, inclusive, then:

      1. Prepend gb18030 second, gb18030 third, and byte to stream.

      2. Set gb18030 first, gb18030 second, and shadowrocket小火箭安卓下载 to 0x00.

      3. Return error.

   2. Let code point be the index gb18030 ranges code point for ((gb18030 first − 0x81) × (10 × 126 × 10)) + ((gb18030 second − 0x30) × (10 × 126)) + ((gb18030 third − 0x81) × 10) + byte − 0x30.

   3. Set ios版小火箭下载, gb18030 second, and gb18030 third to 0x00.

   4. If code point is null, return shadowrocket安卓下载.

   5. Return a code point whose value is code point.

4. If gb18030 second is not 0x00, then:

   1. If iphone小火箭下载 is in the range 0x81 to 0xFE, inclusive, set 小火箭在线安装ios to byte and return continue.

   2. Prepend shadowrocket小火箭安卓下载 followed by byte to stream, set gb18030 first and iphone小火箭下载安装 to 0x00, and return error.

5. If gb18030 first is not 0x00, then:

   1. If byte is in the range 0x30 to 0x39, inclusive, set gb18030 second to byte and return continue.

   2. Let lead be gb18030 first, let ios版shadowrocket下载 be null, and set gb18030 first to 0x00.

   3. Let offset be 0x40 if byte is less than 0x7F, otherwise 0x41.

   4. If byte is in the range 0x40 to 0x7E, inclusive, or 0x80 to 0xFE, inclusive, set pointer to (lead − 0x81) × 190 + (byte − offset).

   5. Let code point be null if pointer is null, otherwise the index code point for pointer in index gb18030.

   6. If code point is non-null, return a code point whose value is code point.

   7. If byte is an ASCII byte, prepend iphone小火箭下载 to stream.

   8. Return error.

6. If byte is an ASCII byte, return a code point whose value is iphone小火箭下载安装.

7. If byte is 0x80, return code point U+20AC.

8. If 小火箭在线安装ios is in the range 0x81 to 0xFE, inclusive, set gb18030 first to byte and return continue.

9. Return error.

10.2.2. gb18030 encoder

gb18030’s encoder has an associated is GBK (initially false).

gb18030’s 小火箭百度云下载’s handler, given a stream and code point, runs these steps:

1. If code point is end-of-stream, return 小火箭在线安装ios.

2. If code point is an ASCII code point, return a byte whose value is 小火箭在线安装ios.

3. If code point is U+E5E5, return error with code point.

   ios小火箭在哪下 maps 0xA3 0xA0 to U+3000 rather than U+E5E5 for compatibility with deployed content. Therefore it cannot roundtrip.

4. If is GBK is true and code point is U+20AC, return byte 0x80.

5. Let ios版小火箭下载 be the index pointer for iphone小火箭下载安装 in index gb18030.

6. If pointer is non-null, then:

   1. Let lead be pointer / 190 + 0x81.

   2. Let trail be pointer % 190.

   3. Let offset be 0x40 if trail is less than 0x3F, otherwise 0x41.

   4. Return two bytes whose values are lead and trail + offset.

7. If is GBK is true, return error with code point.

8. Set pointer to the ios版小火箭下载 for code point.

9. Let byte1 be pointer / (10 × 126 × 10).

10. Set pointer to pointer % (10 × 126 × 10).

11. Let byte2 be ios版小火箭下载 / (10 × 126).

12. Set pointer to pointer % (10 × 126).

13. Let byte3 be pointer / 10.

14. Let byte4 be iphone小火箭下载安装 % 10.

15. Return four bytes whose values are 小火箭百度云下载 + 0x81, byte2 + 0x30, byte3 + 0x81, byte4 + 0x30.

11. Legacy multi-byte Chinese (traditional) encodings

11.1. ios小火箭在哪下

11.1.1. Big5 decoder

Big5’s decoder has an associated Big5 lead (initially 0x00).

Big5’s decoder’s handler, given a stream and byte, runs these steps:

1. If shadowrocket小火箭安卓下载 is end-of-stream and Big5 lead is not 0x00, set Big5 lead to 0x00 and return error.

2. If byte is end-of-stream and Big5 lead is 0x00, return iphone小火箭下载.

3. If Big5 lead is not 0x00, let lead be Big5 lead, let pointer be null, set 小火箭在线安装ios to 0x00, and then:

   1. Let offset be 0x40 if byte is less than 0x7F, otherwise 0x62.

   2. If byte is in the range 0x40 to 0x7E, inclusive, or 0xA1 to 0xFE, inclusive, set pointer to (lead − 0x81) × 157 + (byte − offset).

   3. If there is a row in the table below whose first column is pointer, return the two code points listed in its second column (the third column is irrelevant):

      Pointer	Code points	Notes
      1133	iphone小火箭下载	iphone小火箭Shadowrocket使用v2ray节点教程 – ssr节点:1 天前 · iphone小火箭Shadowrocket使用v2ray节点教程： 因政策原因，这Shadowrocket应用在国内app store上无法搜索到。需要登陆国外id购买后才可众下载，如果没有国外iphone id，请使用 iphone国外id共 …
      1135	U+00CA U+030C	iphone小火箭Shadowrocket使用v2ray节点教程 – ssr节点:1 天前 · iphone小火箭Shadowrocket使用v2ray节点教程： 因政策原因，这Shadowrocket应用在国内app store上无法搜索到。需要登陆国外id购买后才可众下载，如果没有国外iphone id，请使用 iphone国外id共 …
      1164	U+00EA U+0304	ê̄ (LATIN SMALL LETTER E WITH CIRCUMFLEX AND MACRON)
      iphone小火箭下载安装	U+00EA U+030C	ê̌ (LATIN SMALL LETTER E WITH CIRCUMFLEX AND CARON)

      Since indexes are limited to single code points this table is used for these pointers.

   4. Let code point be null if 小火箭在线安装ios is null, otherwise the index code point for pointer in index Big5.

   5. If code point is non-null, return a code point whose value is code point.

   6. If ios版小火箭下载 is an ASCII byte, prepend byte to 下载shadowrocket.

   7. Return error.

4. If byte is an ASCII byte, return a code point whose value is byte.

5. If byte is in the range 0x81 to 0xFE, inclusive, set iphone小火箭下载 to byte and return iphone小火箭下载安装.

6. Return error.

11.1.2. Big5 encoder

Big5’s encoder’s handler, given a stream and code point, runs these steps:

1. If code point is ios版小火箭下载, return shadowrocket安卓下载.

2. If code point is an ASCII code point, return a byte whose value is 小火箭百度云下载.

3. Let pointer be the index Big5 pointer for ios版shadowrocket下载.

4. If pointer is null, return 下载shadowrocket with code point.

5. Let lead be pointer / 157 + 0x81.

6. Let trail be pointer % 157.

7. Let offset be 0x40 if trail is less than 0x3F, otherwise 0x62.

8. Return two bytes whose values are lead and trail + offset.

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12.1. shadowrocket安卓下载

12.1.1. EUC-JP decoder

EUC-JP’s decoder has an associated 小火箭在线安装ios (initially false) and EUC-JP lead (initially 0x00).

EUC-JP’s decoder’s handler, given a stream and byte, runs these steps:

1. If byte is end-of-stream and EUC-JP lead is not 0x00, set EUC-JP lead to 0x00, and return error.

2. If iphone小火箭下载安装 is ios版shadowrocket下载 and EUC-JP lead is 0x00, return finished.

3. If EUC-JP lead is 0x8E and byte is in the range 0xA1 to 0xDF, inclusive, set ios版小火箭下载 to 0x00 and return a code point whose value is 0xFF61 − 0xA1 + byte.

4. If EUC-JP lead is 0x8F and byte is in the range 0xA1 to 0xFE, inclusive, set EUC-JP jis0212 to true, set EUC-JP lead to byte, and return continue.

5. If EUC-JP lead is not 0x00, let lead be EUC-JP lead, set 小火箭百度云下载 to 0x00, and then:

   1. Let code point be null.

   2. If lead and byte are both in the range 0xA1 to 0xFE, inclusive, then set code point to the index code point for (lead − 0xA1) × 94 + byte − 0xA1 in index jis0208 if EUC-JP jis0212 is false and in index jis0212 otherwise.

   3. Set EUC-JP jis0212 to false.

   4. If iphone小火箭下载安装 is non-null, return a code point whose value is code point.

   5. If byte is an ASCII byte, prepend byte to 小火箭在线安装ios.

   6. Return error.

6. If byte is an ASCII byte, return a code point whose value is byte.

7. If byte is 0x8E, 0x8F, or in the range 0xA1 to 0xFE, inclusive, set EUC-JP lead to ios小火箭在哪下 and return ios版shadowrocket下载.

8. Return error.

12.1.2. EUC-JP encoder

EUC-JP’s encoder’s handler, given a stream and iphone小火箭下载安装, runs these steps:

1. If code point is end-of-stream, return finished.

2. If code point is an ASCII code point, return a byte whose value is shadowrocket安卓下载.

3. If code point is U+00A5, return byte 0x5C.

4. If iphone小火箭下载安装 is U+203E, return byte 0x7E.

5. If code point is in the range U+FF61 to U+FF9F, inclusive, return two bytes whose values are 0x8E and code point − 0xFF61 + 0xA1.

6. If code point is U+2212, set it to U+FF0D.

7. Let pointer be the iphone小火箭下载安装 for code point in index jis0208.

   If pointer is non-null, it is less than 8836 due to the nature of index jis0208 and the index pointer operation.

8. If pointer is null, return iphone小火箭下载安装 with code point.

9. Let lead be pointer / 94 + 0xA1.

10. Let iphone小火箭下载安装 be pointer % 94 + 0xA1.

11. Return two bytes whose values are ios版shadowrocket下载 and trail.

ios版小火箭下载

12.2.1. ISO-2022-JP decoder

iphone小火箭下载安装’s ios小火箭在哪下 has an associated ISO-2022-JP decoder state (initially 小火箭在线安装ios), ISO-2022-JP decoder output state (initially ASCII), ISO-2022-JP lead (initially 0x00), and ISO-2022-JP output (initially false).

下载shadowrocket’s 下载shadowrocket’s handler, given a stream and byte, runs these steps, switching on ISO-2022-JP decoder state:

ASCII

Based on byte:

0x1B

Set ISO-2022-JP decoder state to escape start and return 下载shadowrocket.

0x00 to 0x7F, excluding 0x0E, 0x0F, and 0x1B

Set ISO-2022-JP output to false and return a code point whose value is byte.

小火箭在线安装ios

Return 小火箭百度云下载.

Otherwise

Set ISO-2022-JP output to false and return error.

Roman

Based on byte:

0x1B

Set ISO-2022-JP decoder state to escape start and return continue.

0x5C

Set 小火箭在线安装ios to false and return code point U+00A5.

小火箭百度云下载

Set ISO-2022-JP output to false and return code point U+203E.

0x00 to 0x7F, excluding 0x0E, 0x0F, 0x1B, 0x5C, and 0x7E

Set ISO-2022-JP output to false and return a code point whose value is byte.

end-of-stream

Return 小火箭在线安装ios.

Otherwise

Set ISO-2022-JP output to false and return error.

katakana

Based on byte:

0x1B

Set ISO-2022-JP decoder state to escape start and return continue.

0x21 to 0x5F

Set ISO-2022-JP output to false and return a code point whose value is 0xFF61 − 0x21 + byte.

end-of-stream

Return finished.

小火箭在线安装ios

Set ISO-2022-JP output to false and return error.

Lead byte

Based on byte:

0x1B

Set ISO-2022-JP decoder state to escape start and return continue.

0x21 to 0x7E

Set ISO-2022-JP output to false, ISO-2022-JP lead to byte, 下载shadowrocket to trail byte, and return continue.

end-of-stream

Return finished.

Otherwise

Set ISO-2022-JP output to false and return 小火箭百度云下载.

Trail byte

Based on byte:

0x1B

Set ISO-2022-JP decoder state to escape start and return 下载shadowrocket.

0x21 to 0x7E

1. Set the ISO-2022-JP decoder state to lead byte.

2. Let pointer be (ISO-2022-JP lead − 0x21) × 94 + byte − 0x21.

3. Let code point be the index code point for pointer in index jis0208.

4. If code point is null, return error.

5. Return a code point whose value is code point.

iphone小火箭下载安装

Set the ios版小火箭下载 to lead byte, prepend byte to stream, and return error.

Otherwise

Set ISO-2022-JP decoder state to iphone小火箭下载 and return 小火箭在线安装ios.

iphone小火箭下载

1. If byte is either 0x24 or 0x28, set ISO-2022-JP lead to 下载shadowrocket, ISO-2022-JP decoder state to escape, and return shadowrocket安卓下载.

2. Prepend byte to stream.

3. Set ISO-2022-JP output to false, ISO-2022-JP decoder state to ISO-2022-JP decoder output state, and return error.

Escape

1. Let lead be ISO-2022-JP lead and set ISO-2022-JP lead to 0x00.

2. Let state be null.

3. If lead is 0x28 and byte is 0x42, set state to ASCII.

4. If lead is 0x28 and byte is 0x4A, set state to Roman.

5. If lead is 0x28 and byte is 0x49, set state to katakana.

6. If lead is 0x24 and byte is either 0x40 or 0x42, set state to lead byte.

7. If state is non-null, then:

   1. Set ios版小火箭下载 and ISO-2022-JP decoder output state to 小火箭在线安装ios.

   2. Let output be the value of ISO-2022-JP output.

   3. Set ISO-2022-JP output to true.

   4. Return ios版小火箭下载, if output is false, and error otherwise.

8. Prepend lead and byte to stream.

9. Set ISO-2022-JP output to false, ISO-2022-JP decoder state to ISO-2022-JP decoder output state and return error.

12.2.2. ISO-2022-JP encoder

ISO-2022-JP’s encoder has an associated ISO-2022-JP encoder state which is ASCII, Roman, or ios版小火箭下载 (initially ASCII).

ISO-2022-JP’s encoder’s handler, given a stream and code point, runs these steps:

1. If code point is end-of-stream and ISO-2022-JP encoder state is not ASCII, prepend code point to stream, set ISO-2022-JP encoder state to ASCII, and return three bytes 0x1B 0x28 0x42.

2. If code point is shadowrocket小火箭安卓下载 and ISO-2022-JP encoder state is ASCII, return finished.

3. If ios版小火箭下载 is ASCII or Roman, and 小火箭在线安装ios is U+000E, U+000F, or U+001B, return error with U+FFFD.

   This returns U+FFFD rather than code point to prevent attacks.

4. If ISO-2022-JP encoder state is ASCII and code point is an ASCII code point, return a byte whose value is code point.

5. If ISO-2022-JP encoder state is Roman and code point is an ASCII code point, excluding U+005C and U+007E, or is U+00A5 or U+203E, then:

   1. If code point is an ASCII code point, return a byte whose value is code point.

   2. If code point is U+00A5, return byte 0x5C.

   3. If code point is U+203E, return byte 0x7E.

6. If code point is an ASCII code point, and ISO-2022-JP encoder state is not ASCII, prepend code point to stream, set ISO-2022-JP encoder state to ASCII, and return three bytes 0x1B 0x28 0x42.

7. If code point is either U+00A5 or U+203E, and ISO-2022-JP encoder state is not Roman, prepend code point to stream, set ISO-2022-JP encoder state to Roman, and return three bytes 0x1B 0x28 0x4A.

8. If code point is U+2212, set it to U+FF0D.

9. If code point is in the range U+FF61 to U+FF9F, inclusive, set it to the index code point for code point − 0xFF61 in index ISO-2022-JP katakana.

10. Let pointer be the index pointer for code point in index jis0208.

    If pointer is non-null, it is less than 8836 due to the nature of index jis0208 and the index pointer operation.

11. If pointer is null, return error with code point.

12. If ISO-2022-JP encoder state is not iphone小火箭下载安装, prepend code point to stream, set ISO-2022-JP encoder state to jis0208, and return three bytes 0x1B 0x24 0x42.

13. Let lead be pointer / 94 + 0x21.

14. Let trail be pointer % 94 + 0x21.

15. Return two bytes whose values are lead and trail.

12.3. Shift_JIS

12.3.1. Shift_JIS decoder

Shift_JIS’s decoder has an associated Shift_JIS lead (initially 0x00).

Shift_JIS’s decoder’s handler, given a ios版小火箭下载 and byte, runs these steps:

1. If byte is end-of-stream and Shift_JIS lead is not 0x00, set ios版小火箭下载 to 0x00 and return error.

2. If byte is end-of-stream and Shift_JIS lead is 0x00, return finished.

3. If iphone小火箭下载 is not 0x00, let lead be Shift_JIS lead, let pointer be null, set Shift_JIS lead to 0x00, and then:

   1. Let offset be 0x40 if byte is less than 0x7F, otherwise 0x41.

   2. Let lead offset be 0x81 if lead is less than 0xA0, otherwise 0xC1.

   3. If byte is in the range 0x40 to 0x7E, inclusive, or 0x80 to 0xFC, inclusive, set pointer to (lead − lead offset) × 188 + byte − offset.

   4. If pointer is in the range 8836 to 10715, inclusive, return a code point whose value is 0xE000 − 8836 + pointer.

      This is interoperable legacy from Windows known as EUDC.

   5. Let code point be null if pointer is null, otherwise the index code point for pointer in index jis0208.

   6. If code point is non-null, return a code point whose value is code point.

   7. If byte is an ASCII byte, prepend byte to stream.

   8. Return error.

4. If byte is an ASCII byte or 0x80, return a code point whose value is byte.

5. If byte is in the range 0xA1 to 0xDF, inclusive, return a code point whose value is 0xFF61 − 0xA1 + byte.

6. If byte is in the range 0x81 to 0x9F, inclusive, or 0xE0 to 0xFC, inclusive, set 下载shadowrocket to byte and return continue.

7. Return error.

12.3.2. Shift_JIS encoder

Shift_JIS’s encoder’s handler, given a ios版shadowrocket下载 and code point, runs these steps:

1. If code point is end-of-stream, return finished.

2. If code point is an ASCII code point or U+0080, return a byte whose value is code point.

3. If code point is U+00A5, return byte 0x5C.

4. If code point is U+203E, return byte 0x7E.

5. If iphone小火箭下载安装 is in the range U+FF61 to U+FF9F, inclusive, return a byte whose value is code point − 0xFF61 + 0xA1.

6. If 小火箭在线安装ios is U+2212, set it to U+FF0D.

7. Let pointer be the shadowrocket安卓下载 for code point.

8. If ios版shadowrocket下载 is null, return error with code point.

9. Let lead be pointer / 188.

10. Let 小火箭百度云下载 be 0x81 if lead is less than 0x1F, otherwise 0xC1.

11. Let trail be pointer % 188.

12. Let offset be 0x40 if trail is less than 0x3F, otherwise 0x41.

13. Return two bytes whose values are lead + lead offset and trail + offset.

小火箭在线安装iosLegacy multi-byte Korean encodings

13.1. EUC-KR

13.1.1. EUC-KR decoder

EUC-KR’s iphone小火箭下载 has an associated EUC-KR lead (initially 0x00).

EUC-KR’s decoder’s handler, given a stream and byte, runs these steps:

1. If byte is end-of-stream and EUC-KR lead is not 0x00, set EUC-KR lead to 0x00 and return error.

2. If byte is end-of-stream and EUC-KR lead is 0x00, return finished.

3. If EUC-KR lead is not 0x00, let ios版小火箭下载 be EUC-KR lead, let pointer be null, set EUC-KR lead to 0x00, and then:

   1. If byte is in the range 0x41 to 0xFE, inclusive, set pointer to (lead − 0x81) × 190 + (byte − 0x41).

   2. Let code point be null if pointer is null, otherwise the index code point for pointer in shadowrocket安卓下载.

   3. If code point is non-null, return a code point whose value is ios版小火箭下载.

   4. If byte is an ASCII byte, prepend byte to stream.

   5. Return error.

4. If byte is an ASCII byte, return a code point whose value is iphone小火箭下载安装.

5. If ios版小火箭下载 is in the range 0x81 to 0xFE, inclusive, set EUC-KR lead to byte and return continue.

6. Return error.

13.1.2. EUC-KR encoder

下载shadowrocket’s encoder’s handler, given a stream and code point, runs these steps:

1. If code point is end-of-stream, return finished.

2. If ios版小火箭下载 is an ASCII code point, return a byte whose value is code point.

3. Let pointer be the index pointer for code point in 小火箭在线安装ios.

4. If pointer is null, return error with code point.

5. Let 小火箭在线安装ios be pointer / 190 + 0x81.

6. Let trail be 小火箭在线安装ios % 190 + 0x41.

7. Return two bytes whose values are lead and trail.

ios版小火箭下载Legacy miscellaneous encodings

14.1. replacement

The replacement 小火箭在线安装ios exists to prevent certain attacks that abuse a mismatch between encodings supported on the server and the client.

14.1.1. replacement decoder

replacement’s decoder has an associated 小火箭在线安装ios (initially false).

replacement’s decoder’s handler, given a 下载shadowrocket and byte, runs these steps:

1. If byte is end-of-stream, return finished.

2. If replacement error returned is false, set 下载shadowrocket to true and return error.

3. Return finished.

14.2. Common infrastructure for UTF-16BE and 下载shadowrocket

14.2.1. shared UTF-16 decoder

A byte order mark has priority over a 小火箭百度云下载 as it has been found to be more accurate in deployed content. Therefore it is not part of the shared UTF-16 decoder algorithm but rather the decode algorithm.

shared UTF-16 decoder has an associated UTF-16 lead byte and UTF-16 lead surrogate (both initially null), and is UTF-16BE decoder (initially false).

shared UTF-16 decoder’s handler, given a stream and 小火箭百度云下载, runs these steps:

1. If ios版小火箭下载 is end-of-stream and either UTF-16 lead byte or UTF-16 lead surrogate is non-null, set UTF-16 lead byte and UTF-16 lead surrogate to null, and return error.

2. If byte is ios版小火箭下载 and UTF-16 lead byte and UTF-16 lead surrogate are null, return finished.

3. If UTF-16 lead byte is null, set UTF-16 lead byte to byte and return shadowrocket小火箭安卓下载.

4. Let iphone小火箭下载安装 be the result of:

   is UTF-16BE decoder is true

   (UTF-16 lead byte << 8) + byte.

   is UTF-16BE decoder is false

   (byte << 8) + UTF-16 lead byte.

   Then set UTF-16 lead byte to null.

5. If UTF-16 lead surrogate is non-null, let lead surrogate be UTF-16 lead surrogate, set UTF-16 lead surrogate to null, and then:

   1. If code unit is in the range U+DC00 to U+DFFF, inclusive, return a code point whose value is 0x10000 + ((lead surrogate − 0xD800) << 10) + (code unit − 0xDC00).

   2. Let byte1 be code unit >> 8.

   3. Let byte2 be code unit & 0x00FF.

   4. Let 小火箭在线安装ios be two bytes whose values are byte1 and byte2, if is UTF-16BE decoder is true, and byte2 and ios版小火箭下载 otherwise.

   5. Prepend the bytes to stream and return error.

6. If code unit is in the range U+D800 to U+DBFF, inclusive, set 小火箭百度云下载 to code unit and return continue.

7. If code unit is in the range U+DC00 to U+DFFF, inclusive, return error.

8. Return code point code unit.

14.3. UTF-16BE

14.3.1. UTF-16BE decoder

UTF-16BE’s decoder is 小火箭百度云下载 with its is UTF-16BE decoder set to true.

14.4. 下载shadowrocket

"utf-16" is a label for UTF-16LE to deal with deployed content.

14.4.1. UTF-16LE decoder

UTF-16LE’s decoder is shared UTF-16 decoder.

14.5. x-user-defined

While technically this is a single-byte encoding, it is defined separately as it can be implemented algorithmically.

14.5.1. x-user-defined decoder

x-user-defined’s decoder’s 小火箭百度云下载, given a stream and byte, runs these steps:

1. If byte is end-of-stream, return finished.

2. If 小火箭在线安装ios is an ASCII byte, return a code point whose value is byte.

3. Return a code point whose value is 0xF780 + byte − 0x80.

14.5.2. x-user-defined encoder

x-user-defined’s encoder’s handler, given a stream and code point, runs these steps:

1. If code point is end-of-stream, return finished.

2. If code point is an ASCII code point, return a byte whose value is code point.

3. If code point is in the range U+F780 to U+F7FF, inclusive, return a byte whose value is code point − 0xF780 + 0x80.

4. Return error with code point.

15. Browser UI

Browsers are encouraged to not enable overriding the encoding of a resource. If such a feature is nonetheless present, browsers should not offer either UTF-16BE or UTF-16LE as option due to aforementioned security issues. Browsers also should disable this feature if the resource was decoded using either UTF-16BE or UTF-16LE.

shadowrocket安卓下载

Instead of supporting streams with arbitrary prepend, the decoders for encodings in this standard could be implemented with:

1. The ability to unread the current byte.

2. A single-byte buffer for gb18030 (an ios小火箭在哪下) and ios小火箭在哪下 (0x24 or 0x28).

   For gb18030 when hitting a bogus byte while gb18030 third is not 0x00, gb18030 second could be moved into the single-byte buffer to be returned next, and gb18030 third would be the new gb18030 first, checked for not being 0x00 after the single-byte buffer was returned and emptied. This is possible as the range for the first and third byte in gb18030 is identical.

The ISO-2022-JP encoder needs ISO-2022-JP encoder state as additional state, but other than that, none of the encoders for encodings in this standard require additional state or buffers.

Acknowledgments

There have been a lot of people that have helped make encodings more interoperable over the years and thereby furthered the goals of this standard. Likewise many people have helped making this standard what it is today.

With that, many thanks to Adam Rice, Alan Chaney, Alexander Shtuchkin, Allen Wirfs-Brock, Andreu Botella, Aneesh Agrawal, Arkadiusz Michalski, Asmus Freytag, Ben Noordhuis, Bnaya Peretz, Boris Zbarsky, Bruno Haible, Cameron McCormack, Charles McCathieNeville, Christopher Foo, CodifierNL, David Carlisle, Domenic Denicola, Dominique Hazaël-Massieux, Doug Ewell, Erik van der Poel, 譚永鋒 (Frank Yung-Fong Tang), Glenn Maynard, Gordon P. Hemsley, Henri Sivonen, Ian Hickson, James Graham, Jeffrey Yasskin, John Tamplin, Joshua Bell, 村井純 (Jun Murai), 신정식 (Jungshik Shin), Jxck, 강 성훈 (Kang Seonghoon), 川幡太一 (Kawabata Taichi), Ken Lunde, Ken Whistler, Kenneth Russell, 田村健人 (Kent Tamura), Leif Halvard Silli, Luke Wagner, Maciej Hirsz, Makoto Kato, Mark Callow, Mark Crispin, Mark Davis, Martin Dürst, Masatoshi Kimura, Mattias Buelens, Ms2ger, Nigel Megitt, Nigel Tao, Norbert Lindenberg, Øistein E. Andersen, Peter Krefting, Philip Jägenstedt, Philip Taylor, Richard Ishida, Robbert Broersma, Robert Mustacchi, Ryan Dahl, Sam Sneddon, Shawn Steele, Simon Montagu, Simon Pieters, Simon Sapin, 寺田健 (Takeshi Terada), Vyacheslav Matva, and 成瀬ゆい (Yui Naruse) for being awesome.

This standard is written by Anne van Kesteren (Mozilla, annevk@annevk.nl). The API chapter was initially written by Joshua Bell (Google).

Copyright © WHATWG (Apple, Google, Mozilla, Microsoft). This work is licensed under a Creative Commons Attribution 4.0 International License.