Library Reference

version 2.112.0

Internal API

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dmd.root.utf

Functions related to UTF encoding.

Authors:

Walter Bright

License:

Boost License 1.0

Sourceutf.d

Documentationhttps://dlang.org/phobos/dmd_root_utf.html

Coveragehttps://codecov.io/gh/dlang/dmd/src/master/compiler/src/dmd/root/utf.d

pure nothrow @nogc @safe boolutf_isValidDchar(dcharc);

The Unicode code space is the range of code points [0x000000,0x10FFFF]except the UTF-16 surrogate pairs in the range [0xD800,0xDFFF]

pure nothrow @nogc @safe intutf_codeLengthChar(dcharc);

Returns the code length of c in code units.

pure nothrow @nogc @safe intutf_codeLength(intsz, dcharc);

Returns the code length of c in code units for the encoding. sz is the encoding: 1 = utf8, 2 = utf16, 4 = utf32.

pure nothrow @nogc @safe boolisBidiControl(dcharc);

Checks whether an Unicode code point is a bidirectional control character.

pure nothrow @nogc @safe stringutf_decodeChar(const(char)[]s, ref size_tridx, out dcharrresult);

Decode a UTF-8 sequence as a single UTF-32 code point.

Parameters:

const(char)[]`s`	UTF-8 sequence
size_t`ridx`	starting index in s[], updated to reflect number of code units decoded
dchar`rresult`	set to character decoded

Returns:

null on success, otherwise error message string

pure nothrow @nogc @safe stringutf_decodeWchar(const(wchar)[]s, ref size_tridx, out dcharrresult);

Decode a UTF-16 sequence as a single UTF-32 code point.

Parameters:

const(wchar)[]`s`	UTF-16 sequence
size_t`ridx`	starting index in s[], updated to reflect number of code units decoded
dchar`rresult`	set to character decoded

Returns:

null on success, otherwise error message string

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Library Reference

dmd.root.utf