The UTF-8 encoding library allows you to process data files that contain UTF-8 encoding.

You can use the pattern macro utf8.char to match UTF-8 characters in data.

You can use the pattern macro utf8.single-byte-char to match only ASCII UTF-8 characters in data.

You can use the pattern macro utf8.multi-byte-char to match only double-byte UTF-8 characters in data.

You can use the function utf8.code-point to convert a UTF-8 character (that is, a sequence of bytes that represents a character in UTF-8) to its binary character value.

You can use the function utf8.encoding to convert a binary character value to UTF-8 (that is, to that sequence of bytes which represents that character value in UTF-8).

Example:

  import "omutf8.xmd" prefixed by utf8.
    process
    repeat scan "flamb%195#%169#"
         match utf8.single-byte-char+ => c
              output c
         match utf8.multi-byte-char => c
              local integer n initial {utf8.code-point of c}
              do when n > 255
                   output "&#x" || "16rud" % n || ";"
              else
                   output "b" % n
              done
      again

Functions utf8.byte-order-mark utf8.char utf8.code-point utf8.encoding utf8.multi-byte-char utf8.omutf8-version utf8.single-byte-char

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