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pbot/applets/compiler_vm/host/bin/vm-exec
Pragmatic Software 33e13fd993 Start refactoring virtual machine (1/3)
This is expected to take three commits to complete. This first initial
commit does the following:

- Begin initial rough-draft of doc/VirtualMachine.md
- Begin initial refactoring of scripts

The next commit will polish up the initial rough-draft and refactoring.

The final commit will quality-check everything and fix anything overlooked.
2022-01-23 07:49:23 -08:00

104 lines
2.5 KiB
Perl
Executable File

#!/usr/bin/env perl
# File: vm-exec
#
# Purpose: Process and send commands to the PBot virtual machine on the
# default TCP port (5555). Use the PBOT_VM_PORT environment variable to
# override the port. E.g., to use port 6666 instead:
#
# $ PBOT_VM_PORT=6666 vm-exec -lang=sh echo test
# SPDX-FileCopyrightText: 2021 Pragmatic Software <pragma78@gmail.com>
# SPDX-License-Identifier: MIT
use warnings;
use strict;
use File::Basename;
use JSON::XS;
use FindBin qw($RealBin);
use lib "$RealBin/../lib";
my $json = join ' ', @ARGV;
my $args = eval { decode_json $json };
if ($@) {
# wasn't JSON; make structure manually
if ($json =~ s/^-lang=([^ ]+)//) {
$args = { lang => $1, code => $json };
} else {
$args = { code => $json };
}
}
if (not exists $args->{code}) {
die "Missing `code` field. Usage: $0 {'code':'<code>'}\n";
}
# set any missing fields to default values
$args->{nick} //= 'vm';
$args->{channel} //= 'vm';
$args->{lang} //= 'c11';
# override vm-port with environment variable
if ($ENV{PBOT_VM_PORT}) {
$args->{'vm-port'} = $ENV{PBOT_VM_PORT};
}
my $language = lc $args->{lang};
eval {
require "Languages/$language.pm";
} or do {
my $found = 0;
my ($languages, $comma) = ('', '');
foreach my $module (sort glob "$RealBin/../lib/Languages/*.pm") {
$module = basename $module;
$module =~ s/.pm$//;
next if $module =~ m/^_/;
require "Languages/$module.pm" or die $!;
my $mod = "Languages::$module"->new;
if (exists $mod->{name} and $mod->{name} eq $language) {
$language = $module;
$found = 1;
last;
}
$module = $mod->{name} if exists $mod->{name};
$languages .= "$comma$module";
$comma = ', ';
}
if (not $found) {
print "Language '$language' is not supported.\nSupported languages are: $languages\n";
exit;
}
};
if (not length $args->{code}) {
if (exists $args->{usage}) {
print "$args->{usage}\n";
} else {
print "Usage: cc [-lang=<language>] [-info] [-paste] [-args \"command-line arguments\"] [compiler/language options] <code> [-stdin <stdin input>]\n";
}
exit;
}
my $lang = "Languages::$language"->new(%{$args});
$lang->{local} = $ENV{CC_LOCAL};
$lang->process_interactive_edit;
$lang->process_standard_options;
$lang->process_custom_options;
$lang->process_cmdline_options;
$lang->preprocess_code;
$lang->execute;
$lang->postprocess_output;
$lang->show_output;