Read a file character by character/UTF8: Difference between revisions

If you wish to push a UTF-8 stream through one or more functions, you can a similar state machine (which, unfortunately, has a slightly different syntax):

<lang zkl>fcn readUTF8(chars){ // transform UTF-8 character stream

s:=vm.arglist.concat();

try{ s.len(8); return(s) }

catch{ if(s.len()>6) throw(__exception) } // 6 bytes max for UTF-8

return(Void.Read,1,True,True); // read 1 char, complain on EoS, retry w/char appended to parameters

}</lang>

<lang zkl>w.pump(3,List,readUTF8,"print")</lang>

{{out}}<pre>-->€123</pre>

and returns a list of UTF characters.