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| author | bhgv <bhgv.empire@gmail.com> | 2018-03-01 16:54:45 +0200 |
|---|---|---|
| committer | bhgv <bhgv.empire@gmail.com> | 2018-03-01 16:54:45 +0200 |
| commit | b786f20bbab5a59046aa78a2c6c2a11536497202 (patch) | |
| tree | 0851ecdec889eb9b7ba3751cc04d4f0b474e4a9e /man/2/sys-utfbytes | |
inferno-os tree was separated from the inferno-os-android (separated from the Android driver)
Diffstat (limited to 'man/2/sys-utfbytes')
| -rw-r--r-- | man/2/sys-utfbytes | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/man/2/sys-utfbytes b/man/2/sys-utfbytes new file mode 100644 index 0000000..2ad4248 --- /dev/null +++ b/man/2/sys-utfbytes @@ -0,0 +1,28 @@ +.TH SYS-UTFBYTES 2 +.SH NAME +utfbytes \- compute UTF length of complete Unicode characters in a UTF byte sequence +.SH SYNOPSIS +.EX +include "sys.m"; +sys := load Sys Sys->PATH; + +utfbytes: fn(buf: array of byte, n: int): int; +.EE +.SH DESCRIPTION +.B Utfbytes +examines the +.IR n -byte +UTF sequence in +.IR buf +and returns the number of bytes representing complete Unicode characters. +The value will be less than +.I n +when the region inspected ends with an incomplete UTF sequence. +.SH DIAGNOSTIC +A bounds check error results if +.I n +exceeds the length of the array. +.SH SEE ALSO +.IR sys-intro (2), +.IR sys-byte2char (2), +.IR utf (6) |