/* Part of SWI-Prolog Author: Jan Wielemaker E-mail: J.Wielemaker@vu.nl WWW: http://www.swi-prolog.org Copyright (c) 2010-2016, University of Amsterdam All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ :- module(sicstus_system, [ environ/2, % ?Name, ?Value exec/3, % +Command, -Streams, -PID wait/2, % +PID, -Status pid/1, % -PID now/1, % -TimeStamp datime/1, % -DaTime datime/2, % +TimeStamp, -DaTime sleep/1, % +Seconds shell/0, shell/1, % +Command shell/2, % +Command, -Status system/0, system/1, % +Command system/2, % +Command, -Status popen/3, % +Command, +Mode, -Stream host_name/1, % -HostName working_directory/2, % -Old, +New make_directory/1, % +DirName file_exists/1, % +FileName delete_file/1, % +FileName rename_file/2, % +Old, +New mktemp/2, % +Template, -FileName tmpnam/1 % -FileName ]). :- use_module(library(process)). :- use_module(library(socket)). :- use_module(library(shell), [shell/0]). :- multifile sicstus:rename_module/2. sicstus:rename_module(system, sicstus_system). /** SICStus 3-compatible library(system). @tbd This library is incomplete. As of SICStus 3.12.11, the following predicates are missing: * delete_file/2 * directory_files/2 * file_exists/2 * file_property/2 * host_id/1 * kill/2 @see https://sicstus.sics.se/sicstus/docs/3.12.11/html/sicstus/System-Utilities.html */ %% environ(?Name, ?Value) is nondet. % % True if Value is an atom associated with the environment variable % or system property Name. % % @tbd Mode -Name is not supported. % % Because SWI-Prolog doesn't have an obvious equivalent to % SICStus system properties, this predicate currently % behaves as if no system properties are defined, % i. e. only environment variables are returned. % % @compat sicstus environ(Name, Value) :- getenv(Name, Value). /******************************* * PROCESSES * *******************************/ %% exec(+Command, +Streams, -PID) % % SICStus 3 compatible implementation of exec/3 on top of the % SICStus 4 compatible process_create/3. % % @bug The SICStus version for Windows seems to hand Command % directly to CreateProcess(). We hand it to % % == % %COMSPEC% /s /c "Command" % == % % In case of conflict, it is adviced to use % process_create/3 exec(Command, Streams, PID) :- Streams = [In, Out, Error], shell(Shell, Command, Argv), process_create(Shell, Argv, [ stdin(In), stdout(Out), stderr(Error), process(PID) ]). shell(Shell, Command, ['/s', '/c', Command]) :- current_prolog_flag(windows, true), !, getenv('COMSPEC', Shell). shell('/bin/sh', Command, ['-c', Command]). %% wait(+PID, -Status) % % Wait for processes created using exec/3. % % @see exec/3 wait(PID, Status) :- process_wait(PID, Status). %% pid(-PID) % % Process ID of the current process. % % @compat sicstus. pid(PID) :- current_prolog_flag(pid, PID). %% now(-When) is det. % % Unify when with the current time-stamp % % @compat sicstus now(When) :- get_time(Now), When is integer(Now). %% datime(+When, -Datime) is det. %% datime(-When, +Datime) is det. % % True when Datime is a datime/6 record that reflects the time % stamp When. % % @compat sicstus datime(When, datime(Year,Month,Day,Hour,Min,Sec)) :- var(When), !, date_time_stamp(date(Year,Month,Day,Hour,Min,Sec,_,_,_), When). datime(When, datime(Year,Month,Day,Hour,Min,Sec)) :- stamp_date_time(When, date(Year,Month,Day,Hour,Min,SecF,_,_,_), local), Sec is integer(SecF). %% datime(-Datime) is det. % % Unifies Datime with the current date and time as a datime/6 % record of the form datime(Year,Month,Day,Hour,Min,Sec). All % fields are integers. % % @compat sicstus datime(datime(Year,Month,Day,Hour,Min,Sec)) :- get_time(Now), stamp_date_time(Now, date(Year,Month,Day,Hour,Min,SecF,_,_,_), local), Sec is integer(SecF). %% system. %% system(+Command). %% system(+Command, -Status). % % Synomyms for shell/0, shell/1 and shell/2. % % @compat sicstus. system :- shell. system(Command) :- shell(Command). system(Command, Status) :- shell(Command, Status). %% popen(+Command, +Mode, ?Stream) % % @compat sicstus popen(Command, Mode, Stream) :- open(pipe(Command), Mode, Stream). %% host_name(-HostName) % % @compat sicstus % @see gethostname/1 host_name(HostName) :- gethostname(HostName). /******************************* * FILE OPERATIONS * *******************************/ %% mktemp(+Template, -File) is det. % % Interface to the Unix function. This emulation uses % tmp_file/2 and ignores Template. % % @compat sicstus % @deprecated This interface is a security-risc. Use % tmp_file_stream/3. mktemp(_Template, File) :- tmp_file(mkstemp, File). %% tmpnam(-FileName) % % Interface to tmpnam(). This emulation uses tmp_file/2. % % @compat sicstus % @deprecated This interface is a security-risc. Use % tmp_file_stream/3. tmpnam(File) :- tmp_file(tmpnam, File). %% file_exists(+FileName) is semidet. % % True if a file named FileName exists. % % @compat sicstus file_exists(FileName) :- exists_file(FileName).