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#!/usr/bin/swipl
:- set_prolog_flag(verbose, silent).
:- initialization main.
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
This file emulates SICStus the splfr program, which extracts
declarations for foreign resources from a Prolog file, creates a
wrapper, compiles this and finally generates a shared object that is
automatically loaded into SWI-Prolog.
Note that this implementation is only partial. It was written for
running Alpino (www.let.rug.nl/vannoord/alp/Alpino/) and only processes
the commandline options needed for this.
To use this facility, copy this file to a directory in your $PATH and
edit the first line to reflect the location of SWI-Prolog.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
:- use_module(library(prolog_source)).
:- use_module(library(qpforeign)).
:- use_module(library(apply)).
:- use_module(library(debug)).
:- use_module(library(option)).
:- debug(swipl_frl).
main :-
current_prolog_flag(argv, Argv),
( catch(swipl_frl(Argv), Error,
( print_message(error, Error),
halt(1)
))
-> halt
; print_message(error, goal_failed(swipl_frl(Argv))),
halt(1)
).
swipl_frl(Av) :-
partition(longoption, Av, LongOptions, Av2),
maplist(longoption, LongOptions, NVList),
partition(plfile, Av2, PlFiles, Rest),
PlFiles = [PlFile],
file_name_extension(Base, _Ext, PlFile),
create_glue(PlFile, GlueFile),
option(cflag(CFlags), NVList, ''),
atomic_list_concat([GlueFile,CFlags|Rest], ' ', Cmd0),
format(atom(Cmd), 'swipl-ld -shared -o ~w ~w', [Base, Cmd0]),
debug(swipl_frl, '~w', [Cmd]),
shell(Cmd).
plfile(Name) :-
\+ sub_atom(Name, 0, _, _, -),
file_name_extension(_, pl, Name).
longoption(Name) :-
sub_atom(Name, 0, _, _, --).
longoption(Option, Name=Value) :-
atom_concat(--, Rest, Option),
sub_atom(Rest, B, _, A, =),
sub_atom(Rest, 0, B, _, Name),
sub_atom(Rest, _, A, 0, Value).
%% create_glue(+PrologFile, -GlueFile) is det
%
% Create the glue foreign resources in PrologFile. The glue is
% written to GlueFile.
create_glue(File, Glue) :-
file_name_extension(Base, _Ext, File),
atom_concat(Base, '_swi_glue', GlueBase),
file_name_extension(GlueBase, c, Glue),
load_resource_decls(File, Module),
create_module_glue(Module, Base, GlueBase).
create_module_glue(Module, Base, GlueBase) :-
Module:foreign_resource(Resource, _),
make_foreign_resource_wrapper(Module:Resource, Base, GlueBase).
%% load_resource_decls(+Source, -Module)
%
% Load SICSTus/Quintus resource declarations from Source. Module
% is the module in which the resources are loaded.
load_resource_decls(Source, Module) :-
expects_dialect(sicstus),
prolog_canonical_source(Source, Id),
setup_call_cleanup(prolog_open_source(Id, In),
process(In, no_module, Module),
prolog_close_source(In)).
process(In, State0, Module) :-
prolog_read_source_term(In, _, Expanded, []),
process_terms(Expanded, State0, State1),
( State1 = end_of_file(EndState)
-> state_module(EndState, Module)
; process(In, State1, Module)
).
process_terms([], State, State) :- !.
process_terms([H|T], State0, State) :- !,
process_term(H, State0, State1),
( State1 == end_of_file
-> State = State1
; process_terms(T, State1, State)
).
process_terms(T, State0, State) :-
process_term(T, State0, State).
process_term(end_of_file, State, end_of_file(State)) :- !.
process_term((:- module(Name, _)), _, module(Name)) :- !,
clean_resources(Name).
process_term(Term, State, State) :-
foreign_term(Term, Assert), !,
state_module(State, M),
assertz(M:Assert).
process_term(_, State, State).
foreign_term(foreign_resource(Name, Funcs), foreign_resource(Name, Funcs)).
foreign_term(foreign(Func, Pred), foreign(Func, c, Pred)).
foreign_term(foreign(Func, Lang, Pred), foreign(Func, Lang, Pred)).
state_module(module(M), M).
state_module(no_module, user).
clean_resources(Module) :-
forall(foreign_term(_, T), Module:retractall(T)).
|
