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% -----------------------------------------------------------------------------
% (C) Altran Praxis Limited
% -----------------------------------------------------------------------------
%
% The SPARK toolset is free software; you can redistribute it and/or modify it
% under terms of the GNU General Public License as published by the Free
% Software Foundation; either version 3, or (at your option) any later
% version. The SPARK toolset 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
% General Public License distributed with the SPARK toolset; see file
% COPYING3. If not, go to http://www.gnu.org/licenses for a complete copy of
% the license.
%
% =============================================================================
:- use_module(library(lists)).
file_exists(File, [exists]) :- exists_file(File).
file_exists(File, [read]) :- access_file(File, read).
file_exists(File, [write]) :- access_file(File, write).
:- use_module(library(terms)).
/* Provides access to deprecated *
* 'system' library from SICStus3 */
:- use_module(library(system)).
:- set_prolog_flag(syntax_errors, dec10).
/* Memory */
/* Setting of memory limit is TBD for SICSTUS */
set_memory_limit(_M) :- !.
/* Mathematics */
eval_div(X, Y, Z) :-
Z is X // Y.
fetch_date_and_time(DATE, TIME) :-
datime(datime(Year, Month, Day, Hour, Min, Sec)),
number_codes(Year, [Y1, Y2, Y3, Y4]),
(
number_codes(Month, [M1, M2])
;
number_codes(Month, [M2]),
M1 = 48
),
(
number_codes(Day, [D1, D2])
;
number_codes(Day, [D2]),
D1 = 48
),
(
number_codes(Hour, [H1, H2])
;
number_codes(Hour, [H2]),
H1 = 48
),
(
number_codes(Min, [Mi1, Mi2])
;
number_codes(Min, [Mi2]),
Mi1 = 48
),
(
number_codes(Sec, [S1, S2])
;
number_codes(Sec, [S2]),
S1 = 48
),
numeric_month_to_string([M1, M2], [MU1, MU2, MU3]),
atom_codes(DATE, [D1,D2,45,MU1,MU2,MU3,45,Y1,Y2,Y3,Y4]),
atom_codes(TIME, [H1, H2, 58, Mi1, Mi2, 58, S1, S2]),
!.
get_command_line(DATA) :-
prolog_flag(argv, DATA),
!.
eof_char(-1). /* Always -1 on all SICSTUS platforms */
% All platforms have the same eol character.
eol_char(10).
:- set_prolog_flag(compiling, compactcode).
set_exit_status :- !. /* TBD for SICSTUS */
/* In iso language mode, SICSTUS read/1 _doesn't_ consume layout by default, so we */
/* have to use the more flexible read_term/2 */
read_term_and_layout(V) :-
read_term(A, [consume_layout(true), syntax_errors(dec10)]),
!,
normalize_negative_literals(A, V).
/*** Succeeds iff FNAME denotes a readable, regular file */
file_exists_and_is_readable(FNAME) :-
file_exists(FNAME, [exists]),
file_exists(FNAME, [read]).
/*** Succeeds if file exists and can be written, or file does not exist */
file_can_be_written(FNAME) :-
file_exists(FNAME, [exists]),
file_exists(FNAME, [write]).
file_can_be_written(FNAME) :-
\+ file_exists(FNAME).
/* get_file_attrib/3 for SICSTUS, where we want the full file-name only */
get_file_attrib(FNAME, [FULL_NAME|_], _) :-
absolute_file_name(FNAME, FULL_NAME).
list_files_with_extension(Extension) :-
name(Extension, ExtensionCharList),
append(".", ExtensionCharList, DotExtensionCharList),
/* Determine the current working directory*/
working_directory(Dir, Dir),
/* Find list of all files */
directory_files(Dir, FileAtomList),
/* Find list of files with appropriate extension. */
filesWithExtension(FileAtomList, DotExtensionCharList, FilesMatchingList),
(
/* No matching files found. */
FilesMatchingList=[],
write(' <THERE ARE NONE>')
;
/* Some matching files found */
displayListOfFiles(FilesMatchingList)
),
!,
fail.
displayListOfFiles([]).
displayListOfFiles([H_FilesMatching | T_FilesMatchingList]) :-
/* tab is obsolescent in SICSTUS but still works */
tab(5),
write(H_FilesMatching),
nl,
displayListOfFiles(T_FilesMatchingList).
filesWithExtension([], _, []).
filesWithExtension([H_InFileAtom | T_InFileAtomList],
DotExtensionCharList,
[H_OutFileAtom | T_OutFileAtomList]) :-
name(H_InFileAtom, H_InFileCharList),
/* Check this has suffix looking for */
/* Does have suffix, record this file, minus the suffix */
append(JustNameCharList, DotExtensionCharList, H_InFileCharList),
name(JustNameAtom, JustNameCharList),
H_OutFileAtom=JustNameAtom,
filesWithExtension(T_InFileAtomList,
DotExtensionCharList,
T_OutFileAtomList).
filesWithExtension([_ | T_InFileAtomList],
DotExtensionCharList,
OutFileAtomList) :-
filesWithExtension(T_InFileAtomList,
DotExtensionCharList,
OutFileAtomList).
/************************************************************************/
/* For a run-time system build of the checker, the environment variable */
/* SPADE_CHECKER may be used to override the default. The default is */
/* $SP_APP_DIR/../lib/checker/rules/ where $SP_APP_DIR is set by SICSTUS*/
/* to be the directory in which the checker binary is located - the */
/* normal place for rules to be located in a customer installation. */
/* */
/* Help files are similarly located, but may be overridden by a user */
/* setting SPADE_CHKHELP */
/* */
/* This policy mimics the behaviour of the wrapper.apb program used */
/* with POPLOG-built checkers. */
/************************************************************************/
fetch_environment_variables :-
CR = "/usr/bin",
(
getenv('SPADE_CHECKER', RULES_PATH),
atom_codes(RULES_PATH, RULES_PATH_STR),
append(RULES_PATH_STR, "/", RULES_PATH_STR2),
assertz(spade_checker_prefix(RULES_PATH_STR2))
;
\+ getenv('SPADE_CHECKER', _Y),
append(CR, "/../share/spark/checker/rules/", RULES_PATH),
assertz(spade_checker_prefix(RULES_PATH))
),
(
getenv('SPADE_CHKHELP', HELP_PATH),
atom_codes(HELP_PATH, HELP_PATH_STR),
append(HELP_PATH_STR, "/", HELP_PATH_STR2),
assertz(spade_chkhelp_prefix(HELP_PATH_STR2))
;
\+ getenv('SPADE_CHKHELP', _Y),
append(CR, "/../share/spark/checker/helptext/", HELP_PATH),
assertz(spade_chkhelp_prefix(HELP_PATH))
).
printq(X) :-
write_term(X, [portrayed(true), portray(true), quoted(true), numbervars(true)]).
/* This duplicates the poplog version of numbervars/3. The sicstus version unifies */
/* the variables with letters of the alphabet, whereas poplog uses _<number> */
mynumbervars(Term, N, M) :-
term_variables(Term, Var),
format_vars(Var, N, X, M),
Var=X.
convert(Number, '$VAR2'(Number)):-
!.
format_vars([], FinalNum, [], FinalNum) :- !.
format_vars([_H|T], Num, [Y|L], FinalNum) :-
convert(Num, Y),
Num1 is Num + 1,
format_vars(T, Num1, L, FinalNum).
%###############################################################################
%END-OF-FILE
|
