Foreign characters

/* $Id$ Part of SWI-Prolog Author: Jan Wielemaker E-mail: jan@swi.psy.uva.nl WWW: http://www.swi-prolog.org Copyright (C): 1985-2002, University of Amsterdam This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA As a special exception, if you link this library with other files, compiled with a Free Software compiler, to produce an executable, this library does not by itself cause the resulting executable to be covered by the GNU General Public License. This exception does not however invalidate any other reasons why the executable file might be covered by the GNU General Public License. */ :- module(demo_body, [ reply/1 ]). :- use_module(library('http/http_client')). :- use_module(library('http/http_mime_plugin')). % Decode multipart data :- use_module(library('http/http_image')). % make XPCE generate images :- style_check(-atom). % allow long atoms reply(_) :- flag(request, N, N+1), fail. % /quit % % Explicitely close the connection reply(Request) :- member(path('/quit'), Request), !, format('Connection: close~n', []), format('Content-type: text/html~n~n', []), format('Bye Bye~n'). % /xpce?class=box % % Make XPCE reply with a graphics image. The demo-body pce_reply/1 % is called embedded in a message to XPCE to force the XPCE % incremental garbage collector to reclaim objects created while % serving the request. pce_reply/1 replies to ?class=box using a % blue box with rounded corners. reply(Request) :- member(path('/xpce'), Request), !, send(@prolog, call, demo_body:pce_reply(Request)). % /env % % Reply with the output of printenv (Unix systems only). reply(Request) :- member(path('/env'), Request), !, expand_file_name(~, Home), format('Content-type: text/html~n~n', []), format('~n', []), flag(request, RN, RN), format('Request ~d~n', [RN]), format('

~n', []),
	format('HOME = ~w~n~n', [Home]),
	open(pipe(printenv), read, Fd),
	copy_stream_data(Fd, current_output),
	close(Fd),
	format('

~n', []), format('~n', []). % /upload % /upload_reply % % Provide a form for uploading a file, and deal with the resulting % upload. Contributed by Nicos Angelopoulos. reply(Request) :- member(path('/upload'), Request), !, format('Content-type: text/html~n~n', []), format('~n', []), format('

~n', []), format(''), format(''), format('~n', []), format('~n', []). reply(Request) :- member(path('/upload_reply'), Request), !, format('Content-type: text/html~n~n', []), format('~n', []), format('

~n', []),
	write( req(Request) ), nl,
	http_read_data(Request, Data, []),
	write( data(Data) ), nl,
	format('

'), format('~n', []), format('~n', []). % /xml % % Return a simple formatted XML message. reply(Request) :- member(path('/xml'), Request), !, format('Content-type: text/xml~n~n', []), format('\ Jan Wielemaker Prolog users The SWI-Prolog web-server

This is the first demo of the web-server serving an XML message

', []). % /foreign % % Test emitting text using UTF-8 encoding reply(Request) :- member(path('/foreign'), Request), !, format('Content-type: text/html~n~n', []), format('\ Foreign characters

Chinese for book is ~s ', [ [23398, 20064] ]). % /work % % Do a lot of work and then say 'ok'. Can be used to test % concurrent access using the multi-threaded server. reply(Request) :- member(path('/work'), Request), format(user_error, 'Starting work ...', []), forall(between(1, 10000000, _), atom_codes(_, "hello")), format(user_error, 'done!~n', []), format('Content-type: text/plain~n~n', []), format('ok~n'). % /error % % Produce an error. Load http_error to see the effect. reply(Request) :- member(path('/error'), Request), A is 1/0, format('Content-type: text/plain~n~n', []), format('A = ~w~n', [A]). % ... Otherwise % % Print the request itself. reply(Request) :- format('Content-type: text/html~n~n', []), format('~n', []), format('~n'), print_request(Request), format('~n
~n'), format('~n', []). print_request([]). print_request([H|T]) :- H =.. [Name, Value], format('~w~w~n', [Name, Value]), print_request(T). /******************************* * PCE BASED REQUESTS * *******************************/ pce_reply(Request) :- memberchk(search(Search), Request), memberchk(class=box, Search), new(Box, box(200,200)), send(Box, radius, 20), send(Box, fill_pattern, colour(skyblue)), reply_image(Box, []).