NAME

       scan_utf8 - decode an unsigned integer from UTF-8 encoding

SYNTAX

       #include <scan.h>

       size_t scan_utf8(const char *src,size_t len,uint32_t *dest);

DESCRIPTION

       scan_utf8  decodes an unsigned integer in UTF-8 encoding from a memory area holding binary
       data.  It writes the decode value in dest and returns the number of  bytes  it  read  from
       src.

       scan_utf8  never reads more than len bytes from src.  If the sequence is longer than that,
       or the memory area contains an invalid sequence, scan_utf8 returns 0 and  does  not  touch
       dest.

       The  length  of  the  longest UTF-8 sequence is 5.  If the buffer is longer than that, and
       scan_utf8 fails, then the data was not a valid UTF-8 encoded sequence.

SEE ALSO

       fmt_utf8(3)

                                                                                     scan_utf8(3)