UTF-8/fr

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UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. Unicode characters U+0000 to U+007F are encoded simply as bytes 00h to 7Fh. This means that files and strings which contain only 7-bit ASCII characters have the same encoding under both ASCII and UTF-8.

All characters > U+007F are encoded as a sequence of several bytes, each of which has the two most significant bits set. No byte sequence of one character is contained within a longer byte sequence of another character. This allows easy search for substrings. The first byte of a multibyte sequence that represents a non-ASCII character is always in the range C0h to FDh and it indicates how many bytes follow for this character. All further bytes in a multibyte sequence are in the range 80h to BFh. This allows easy resynchronization and robustness.

UTF-8 byte Sequences

Code points	1st byte	2nd byte	3rd byte	4th byte	most significant bits of the first byte of a multi-byte sequence
U+0000..U+007F	00..7F				0	ASCII
U+0080..U+07FF	C2..DF	80..BF			110	- UTF-8 Latin characters
U+0800..U+0FFF	E0	A0..BF	80..BF		1110
U+1000..U+FFFF	E1..EF	80..BF	80..BF		1110
U+10000..U+3FFFF	F0	90..BF	80..BF	80..BF	11110
U+40000..U+FFFFF	F1..F3	80..BF	80..BF	80..BF	11110
U+100000..U+10FFFF	F4	80..BF	80..BF	80..BF	11110

Fonctions UTF8

The system unit contains some basic functions:

• UnicodeToUtf8
• Utf8ToUnicode
• UTF8Encode
• UTF8Decode
• AnsiToUtf8
• Utf8ToAnsi

Voir aussi

• Travailler avec les répertoires et les noms de fichiers - Fonctions UTF8 pour les fichiers
• Support de l'Unicode par la LCL - UTF8 dans les applications graphiques
• Console mode Pascal: Unicode (UTF8) output - montrant des sorties UTF8 de programmes en mode console/ mode texte