ref: aa8af9c5a32b5f3afe0e612981fe4d9fada43d34
dir: /sys/man/2/idn/
.TH IDN 2 .SH NAME utf2idn, idn2utf \- convert internationalized domain names to and from unicode .SH SYNOPSIS .B #include <u.h> .br .B #include <libc.h> .PP .B int utf2idn(char *name, char *buf, int nbuf); .PP .B int idn2utf(char *name, char *buf, int nbuf); .SH DESCRIPTION These routines handle encoding and decoding of domain names as specified by RFC5890. .PP .I Utf2idn encodes the .SM UTF string .I name to .SM ASCII internatlionalized domain name in .IR buf . .I Idn2utf does the reverse, decoding the .SM ASCII string .I name back to .SM UTF in .IR buf . The maximum size of .I buf is gived by .IR nbuf . .SH SOURCE .B /sys/src/libc/9sys/idn.c .SH "SEE ALSO" .B /lib/rfc/rfc5890 .br .IR utf (6) .SH DIAGNOSTICS The return value is the number of bytes (excluding the terminating NULL) in .I buf or .B -1 on failure.