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yap-6.3/library/readutil.yap

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2015-07-25 03:28:04 +01:00
/*************************************************************************
* *
* YAP Prolog *
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
* *
**************************************************************************
* *
* File: readutil.yap *
* Last rev: 5/12/99 *
* mods: *
* comments: SWI compatible read utilities *
* *
*************************************************************************/
:- module(readutil, [
read_line_to_codes/2,
read_line_to_codes/3,
read_stream_to_codes/2,
read_stream_to_codes/3,
read_file_to_codes/2,
read_file_to_codes/3,
read_file_to_terms/2,
read_file_to_terms/3
]).
read_stream_to_codes(Stream, Codes) :-
read_stream_to_codes(Stream, Codes, []).
read_file_to_codes(File, Codes, _) :-
open(File, read, Stream),
read_stream_to_codes(Stream, Codes, []),
close(Stream).
read_file_to_codes(File, Codes) :-
open(File, read, Stream),
read_stream_to_codes(Stream, Codes, []),
close(Stream).
read_file_to_terms(File, Codes, _) :-
open(File, read, Stream),
prolog_read_stream_to_terms(Stream, Codes, []),
close(Stream).
read_file_to_terms(File, Codes) :-
open(File, read, Stream),
read_stream_to_terms(Stream, Codes, []),
close(Stream).
prolog_read_stream_to_terms(Stream, Terms, Terms0) :-
read(Stream, Term),
(Term == end_of_file ->
Terms = Terms0
;
Terms = [Term|TermsI],
prolog_read_stream_to_terms(Stream, TermsI, Terms0)
).