EncodingScheme

Abstract base class of all encoding schemes

abstract

class EncodingScheme {

static void register();

static EncodingScheme create(string encodingName);

string toString();

string[] names();

bool canEncode(dchar c);

size_t encodedLength(dchar c);

size_t encode(dchar c, ubyte[] buffer);

dchar decode(const(ubyte)[] s);

dchar safeDecode(const(ubyte)[] s);

immutable(ubyte)[] replacementSequence [@property getter];

bool isValid(const(ubyte)[] s);

size_t validLength(const(ubyte)[] s);

immutable(ubyte)[] sanitize(immutable(ubyte)[] s);

size_t firstSequence(const(ubyte)[] s);

size_t count(const(ubyte)[] s);

ptrdiff_t index(const(ubyte)[] s, size_t n);

__gshared

EncodingScheme function()[string] supported;

__gshared

string[string] supportedFactories;

}

Members

Functions

canEncode bool canEncode(dchar c): Returns true if the character c can be represented in this encoding scheme.
count size_t count(const(ubyte)[] s): Returns the total number of code points encoded in a ubyte array.
decode dchar decode(const(ubyte)[] s): Decodes a single code point.
encode size_t encode(dchar c, ubyte[] buffer): Encodes a single code point into a user-supplied, fixed-size buffer.
encodedLength size_t encodedLength(dchar c): Returns the number of ubytes required to encode this code point.
firstSequence size_t firstSequence(const(ubyte)[] s): Returns the length of the first encoded sequence.
index ptrdiff_t index(const(ubyte)[] s, size_t n): Returns the array index at which the (n+1)th code point begins.
isValid bool isValid(const(ubyte)[] s): Returns true if the array is encoded correctly
names string[] names(): Returns an array of all known names for this encoding scheme
safeDecode dchar safeDecode(const(ubyte)[] s): Decodes a single code point. The input does not have to be valid.
sanitize immutable(ubyte)[] sanitize(immutable(ubyte)[] s): Sanitizes an array by replacing malformed ubyte sequences with valid ubyte sequences. The result is guaranteed to be valid for this encoding scheme.
toString string toString(): Returns the standard name of the encoding scheme
validLength size_t validLength(const(ubyte)[] s): Returns the length of the longest possible substring, starting from the first element, which is validly encoded.

Properties

replacementSequence immutable(ubyte)[] replacementSequence [@property getter]: Returns the sequence of ubytes to be used to represent any character which cannot be represented in the encoding scheme.

Static functions

create EncodingScheme create(string encodingName): Obtains a subclass of EncodingScheme which is capable of encoding and decoding the named encoding scheme.
register void register(): Registers a subclass of EncodingScheme.

Meta

Source

See Implementation