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108 lines
2.5 KiB
Perl
Executable File
108 lines
2.5 KiB
Perl
Executable File
#!/usr/bin/env perl
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# File: vm-exec
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#
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# Purpose: Process and send commands to the PBot virtual machine on the
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# default TCP port (5555). Use the PBOTVM_SERIAL environment variable to
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# override the port. E.g., to use port 7777 instead:
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#
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# $ PBOTVM_SERIAL=7777 vm-exec -lang=sh echo test
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# SPDX-FileCopyrightText: 2021 Pragmatic Software <pragma78@gmail.com>
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# SPDX-License-Identifier: MIT
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use warnings;
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use strict;
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use File::Basename;
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use JSON::XS;
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use FindBin qw($RealBin);
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use lib "$RealBin/../lib";
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use constant {
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SERIAL_PORT => $ENV{PBOTVM_SERIAL} // 5555,
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};
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my $json = join ' ', @ARGV;
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my $data = eval { decode_json $json };
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if ($@) {
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# wasn't JSON; make structure manually
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if ($json =~ s/^-lang=([^ ]+)\s+//) {
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$data = { lang => $1, code => $json };
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} else {
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$data = { code => $json };
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}
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}
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if (not exists $data->{code}) {
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die "Usage: $0 <code>\n";
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}
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# set any missing fields to default values
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$data->{nick} //= 'vm';
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$data->{channel} //= 'vm';
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$data->{lang} //= 'c11';
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$data->{'vm-port'} //= SERIAL_PORT;
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# parse -lang option
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if ($data->{code} =~ s/^-lang=([^ ]+)\s+//) {
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$data->{lang} = $1;
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}
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my $language = lc $data->{lang};
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eval {
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require "Languages/$language.pm";
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} or do {
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my $found = 0;
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my ($languages, $comma) = ('', '');
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foreach my $module (sort glob "$RealBin/../lib/Languages/*.pm") {
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$module = basename $module;
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$module =~ s/.pm$//;
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next if $module =~ m/^_/;
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require "Languages/$module.pm" or die $!;
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my $mod = "Languages::$module"->new;
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if (exists $mod->{name} and $mod->{name} eq $language) {
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$language = $module;
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$found = 1;
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last;
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}
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$module = $mod->{name} if exists $mod->{name};
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$languages .= "$comma$module";
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$comma = ', ';
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}
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if (not $found) {
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print "Language '$language' is not supported.\nSupported languages are: $languages\n";
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exit;
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}
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};
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if (not length $data->{code}) {
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if (exists $data->{usage}) {
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print "$data->{usage}\n";
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} else {
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print "Usage: cc [-lang=<language>] [-info] [-paste] [-args \"command-line arguments\"] [compiler/language options] <code> [-stdin <stdin input>]\n";
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}
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exit;
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}
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my $lang = "Languages::$language"->new(%$data);
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$lang->{local} = $ENV{CC_LOCAL};
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$lang->process_interactive_edit;
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$lang->process_standard_options;
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$lang->process_custom_options;
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$lang->process_cmdline_options;
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$lang->preprocess_code;
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$lang->execute;
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$lang->postprocess_output;
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$lang->show_output;
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