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|readln.pl -- Read line as list of tokens|
Read a sentence from the current input stream and convert it into a list of atoms and numbers:
The reader is flexible, you can define yourself:
character(s)that make up a word (execpt the characters A-Z, a-z that always make up words!! and (real)-numbers that always are grouped together!!)
readln/1 The default setting for readln/1 is
underscore('_')and numbers 0-9 as part of words
character(s): instantiate argument 3 with the list of ASCII code's of the desired stop characters (Note: you can also say: ".!?", what is equivalent to [46,33,63]).
character(s): instantiate argument 4 with the list of ASCII code's of the desired word-part characters (Note: wou can also say: "", what is equivalent to  ; i.e. no extra characters).
Main predicates provided:
readln(P) - Read a sentence up till NewLine and unify <P> with the list of atoms/numbers (identical to: readln(P, ,"_01213456789",uppercase).) readln(P, LastCh) - idem as above but the second argument is unified with the last character read (the ascii-code for the stop-character or -1) readln(P, LastCh, Arg1, Arg2, Arg3) - idem as above but the default setting is changed for the instantiated args: Arg1: List of stop characters Arg2: List of word_part characters Arg3: uppercase/lowercase conversion
read_in(P):- % with numbers as separate
readln(P,Eof,_,"", _). % entities.
read_atom(A):- % stop on newline,
readln(A,_,_," ",_). % space is part of word
The following predicates are exported, but not or incorrectly documented.