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508 lines
14 KiB
Perl
Executable File
508 lines
14 KiB
Perl
Executable File
#!/usr/bin/perl
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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 5.020;
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use warnings;
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use strict;
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use feature qw(switch unicode_strings signatures);
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no warnings qw(experimental::smartmatch experimental::signatures);
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package Languages::_default;
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use Encode;
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use JSON::XS;
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use Getopt::Long qw(GetOptionsFromArray :config pass_through no_ignore_case no_auto_abbrev);
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use Time::HiRes qw(gettimeofday);
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use POSIX;
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use FindBin qw($RealBin);
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use InteractiveEdit;
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use Paste;
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use SplitLine;
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sub new {
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my ($class, %conf) = @_;
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my $self = bless {}, $class;
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%$self = %conf;
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$self->{debug} //= 0;
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$self->{arguments} //= '';
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$self->{default_options} //= '';
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$self->{max_history} //= 10000;
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$self->initialize(%conf);
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# remove leading and trailing whitespace
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$self->{nick} =~ s/^\s+|\s+$//g;
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$self->{channel} =~ s/^\s+|\s+$//g;
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$self->{lang} =~ s/^\s+|\s+$//g;
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return $self;
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}
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sub initialize($self, %conf) {}
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sub process_interactive_edit($self) {
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return interactive_edit($self);
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}
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sub process_standard_options($self) {
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my @opt_args = split_line($self->{code}, preserve_escapes => 1, keep_spaces => 0);
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my $getopt_error;
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local $SIG{__WARN__} = sub {
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$getopt_error = shift;
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chomp $getopt_error;
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};
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my ($info, $arguments, $paste);
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GetOptionsFromArray(\@opt_args,
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'info!' => \$info,
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'args|arguments=s' => \$arguments,
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'paste!' => \$paste);
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if ($info) {
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my $cmdline = $self->{cmdline};
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if (length $self->{default_options}) {
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$cmdline =~ s/\$options/$self->{default_options}/;
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} else {
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$cmdline =~ s/\$options\s+//;
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}
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$cmdline =~ s/\$sourcefile/$self->{sourcefile}/g;
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$cmdline =~ s/\$execfile/$self->{execfile}/g;
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my $name = exists $self->{name} ? $self->{name} : $self->{lang};
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print "$name cmdline: $cmdline\n";
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$self->done;
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exit;
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}
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if (defined $arguments) {
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if (not $arguments =~ s/^"(.*)"$/$1/) {
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$arguments =~ s/^'(.*)'$/$1/;
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}
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$self->{arguments} = $arguments;
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}
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if ($paste) {
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$self->add_option("-paste");
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}
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$self->{code} = join ' ', @opt_args;
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if ($self->{code} =~ s/-stdin[ =]?(.*)$//) {
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$self->add_option("-stdin", $1);
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}
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}
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sub process_custom_options {}
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sub process_cmdline_options($self) {
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my $code = $self->{code};
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$self->{cmdline_options} = "";
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while ($code =~ s/^\s*(-[^ ]+)\s*//) {
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$self->{cmdline_options} .= "$1 ";
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$self->add_option($1);
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}
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$self->{cmdline_options} =~ s/\s$//;
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$self->{code} = $code;
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}
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sub add_option($self, $option, $value = '') {
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$self->{options_order} //= [];
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$self->{options}->{$option} = $value;
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push @{$self->{options_order}}, $option;
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}
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sub pretty_format($self, $code) {
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return $code;
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}
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sub preprocess_code($self, %opts) {
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if ($self->{only_show}) {
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print "$self->{code}\n";
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$self->done;
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exit;
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}
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unless($self->{got_run} and $self->{copy_code}) {
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$self->debug("---- preprocess\n");
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$self->debug("$self->{nick} $self->{channel}: [$self->{arguments}] $self->{cmdline_options} $self->{code}\n", 0);
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}
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# replace \n outside of quotes with literal newline
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my $new_code = "";
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use constant {
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NORMAL => 0,
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DOUBLE_QUOTED => 1,
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SINGLE_QUOTED => 2,
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};
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my $state = NORMAL;
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my $escaped = 0;
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my @chars = split //, $self->{code};
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foreach my $ch (@chars) {
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given ($ch) {
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when ('\\') {
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if ($escaped == 0) {
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$escaped = 1;
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next;
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}
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}
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if ($state == NORMAL) {
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when ($_ eq '"' and not $escaped) {
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$state = DOUBLE_QUOTED;
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}
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when ($_ eq "'" and not $escaped) {
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$state = SINGLE_QUOTED;
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}
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when ($_ eq 'n' and $escaped == 1) {
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$ch = "\n";
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$escaped = 0;
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}
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}
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if ($state == DOUBLE_QUOTED) {
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when ($_ eq '"' and not $escaped) {
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$state = NORMAL;
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}
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}
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if ($state == SINGLE_QUOTED) {
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when ($_ eq "'" and not $escaped) {
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$state = NORMAL;
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}
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}
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}
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$new_code .= '\\' and $escaped = 0 if $escaped;
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$new_code .= $ch;
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}
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if (!$opts{omit_prelude} && exists $self->{prelude}) {
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$self->{code} = "$self->{prelude}\n$self->{code}";
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}
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$self->{code} = $new_code;
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}
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sub execute {
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my ($self) = @_;
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my $input = $self->{'vm-input'};
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my $output = $self->{'vm-output'};
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my $date = time;
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my $stdin = $self->{options}->{'-stdin'};
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if (not length $stdin) {
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$stdin = decode('UTF-8', `fortune -u -s`);
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$stdin =~ s/[\n\r\t]/ /msg;
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$stdin =~ s/:/ - /g;
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$stdin =~ s/\s+/ /g;
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$stdin =~ s/^\s+//;
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$stdin =~ s/\s+$//;
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}
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$stdin =~ s/(?<!\\)\\n/\n/mg;
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$stdin =~ s/(?<!\\)\\r/\r/mg;
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$stdin =~ s/(?<!\\)\\t/\t/mg;
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$stdin =~ s/(?<!\\)\\b/\b/mg;
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$stdin =~ s/(?<!\\)\\x([a-f0-9]+)/chr hex $1/igme;
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$stdin =~ s/(?<!\\)\\([0-7]+)/chr oct $1/gme;
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my $pretty_code = $self->pretty_format($self->{code});
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my $cmdline = $self->{cmdline};
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$cmdline =~ s/\$sourcefile/$self->{sourcefile}/g;
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$cmdline =~ s/\$execfile/$self->{execfile}/g;
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my $options = length $self->{cmdline_options} ? $self->{cmdline_options} : $self->{default_options};
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if ((not exists $self->{options}->{'-paste'}) and (not defined $self->{got_run} or $self->{got_run} ne 'paste')) {
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if (exists $self->{options_nopaste}) {
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$options .= ' ' if length $options;
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$options .= $self->{options_nopaste};
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}
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} else {
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if (exists $self->{options_paste}) {
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$options .= ' ' if length $options;
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$options .= $self->{options_paste};
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}
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}
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if (length $options) {
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$cmdline =~ s/\$options/$options/;
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} else {
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$cmdline =~ s/\$options\s+//;
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}
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$self->debug("---- executing\n");
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$self->debug("$cmdline\n$stdin\n$pretty_code\n", 0);
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my $compile_in = {
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lang => $self->{lang},
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sourcefile => $self->{sourcefile},
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execfile => $self->{execfile},
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cmdline => $cmdline,
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input => $stdin,
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date => $date,
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arguments => $self->{arguments},
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code => $pretty_code
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};
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$compile_in->{'factoid'} = $self->{'factoid'} if length $self->{'factoid'};
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$compile_in->{'persist-key'} = $self->{'persist-key'} if length $self->{'persist-key'};
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my $compile_json = encode_json($compile_in);
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$compile_json .= "\n:end:\n";
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my $length = length $compile_json;
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my $sent = 0;
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my $chunk_max = 16384;
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my $chunk_size = $length < $chunk_max ? $length : $chunk_max;
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my $chunks_sent = 0;
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# $self->debug("Sending $length bytes [$compile_json] to vm_server\n");
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$chunk_size -= 1; # account for newline in syswrite
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while ($chunks_sent < $length) {
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my $chunk = substr $compile_json, $chunks_sent, $chunk_size;
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$chunks_sent += length $chunk;
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my $ret = syswrite($input, $chunk);
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if (not defined $ret) {
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my $error = $!;
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print STDERR "Error sending: $error\n";
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$self->debug("Error sending: $error\n");
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last;
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}
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if ($ret == 0) {
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print STDERR "Sent 0 bytes. Sleep 1 sec and try again\n";
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$self->debug("Sent 0 bytes. Sleep 1 sec and try again\n");
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sleep 1;
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next;
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}
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$sent += $ret;
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}
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my $result = "";
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my $got_result = 0;
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while (my $line = <$output>) {
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utf8::decode($line);
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$line =~ s/[\r\n]+$//;
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last if $line =~ /^result:end$/;
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if ($line =~ /^result:/) {
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$line =~ s/^result://;
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my $octets = decode('UTF-8', $line, sub { sprintf '\\\\x%02X', shift });
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$line = encode('UTF-8', $octets, Encode::FB_CROAK);
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my $compile_out = decode_json($line);
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$result .= "$compile_out->{result}\n";
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$got_result = 1;
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next;
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}
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if ($got_result) {
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$result .= "$line\n";
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}
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}
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close $input;
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$self->{output} = $result;
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return $result;
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}
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sub postprocess_output($self) {
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unless($self->{got_run} and $self->{copy_code}) {
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$self->debug("---- post-processing\n");
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$self->debug("$self->{output}\n", 0);
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}
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# backspace
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my $boutput = "";
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my $active_position = 0;
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$self->{output} =~ s/\n$//;
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while ($self->{output} =~ /(.)/gms) {
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my $c = $1;
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if ($c eq "\b") {
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if (--$active_position <= 0) {
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$active_position = 0;
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}
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next;
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}
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substr($boutput, $active_position++, 1) = $c;
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}
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$self->{output} = $boutput;
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# bell
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my @beeps = qw/*BEEP* *BING* *DING* *DONG* *CLUNK* *BONG* *PING* *BOOP* *BLIP* *BOP* *WHIRR*/;
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$self->{output} =~ s/\007/$beeps[rand @beeps]/g;
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# known control characters
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my %escapes = (
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"\e" => '<esc>',
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"\f" => '<ff>',
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# \r and \n are disabled so the bot itself processes them, e.g. when
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# web-pasting, etc. feel free to uncomment them if you like (add them
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# to the group in the substitution regex as well).
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# "\r" => '<cr>',
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# "\n" => '<nl>',
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# \t is left alone
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);
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$self->{output} =~ s/([\e\f])/$escapes{$1}/gs;
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# other unprintables
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my %disregard = ( "\n" => 1, "\r" => 1, "\t" => 1, "\x03" => 1 );
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$self->{output} =~ s/([\x00-\x1f])/$disregard{$1} ? $1 : sprintf('\x%02X', ord $1)/gse;
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}
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sub show_output($self) {
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my $output = $self->{output};
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unless ($self->{got_run} and $self->{copy_code}) {
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$self->debug("---- show output\n");
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$self->debug("$output\n", 0);
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$self->debug("=========================\n", 0);
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}
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if (exists $self->{options}->{'-paste'} or (defined $self->{got_run} and $self->{got_run} eq 'paste')) {
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my $cmdline = "command: $self->{cmdline}\n";
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$cmdline =~ s/\$sourcefile/$self->{sourcefile}/g;
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$cmdline =~ s/\$execfile/$self->{execfile}/g;
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my $options;
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if (length $self->{cmdline_options}) {
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$options = $self->{cmdline_options};
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} else {
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$options = $self->{default_options};
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}
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if (exists $self->{options_paste}) {
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$options .= ' ' if length $options;
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$options .= $self->{options_paste};
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}
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if (length $options) {
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$cmdline =~ s/\$options/$options/;
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} else {
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$cmdline =~ s/\$options\s+//;
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}
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if (length $self->{arguments}) {
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$cmdline .= "arguments: $self->{arguments}\n";
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}
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if ($self->{options}->{'-stdin'}) {
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$cmdline .= "stdin: $self->{options}->{'-stdin'}\n";
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}
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my $pretty_code = $self->pretty_format($self->{code});
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my $cmdline_opening_comment = $self->{cmdline_opening_comment} // "/************* CMDLINE *************\n";
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my $cmdline_closing_comment = $self->{cmdline_closing_comment} // "************** CMDLINE *************/\n";
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my $output_opening_comment = $self->{output_opening_comment} // "/************* OUTPUT *************\n";
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my $output_closing_comment = $self->{output_closing_comment} // "************** OUTPUT *************/\n";
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$pretty_code .= "\n\n";
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$pretty_code .= $cmdline_opening_comment;
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$pretty_code .= "$cmdline";
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$pretty_code .= $cmdline_closing_comment;
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$output =~ s/\s+$//;
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$pretty_code .= "\n";
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$pretty_code .= $output_opening_comment;
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$pretty_code .= "$output\n";
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$pretty_code .= $output_closing_comment;
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my $uri = paste_0x0(encode('UTF-8', $pretty_code));
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print "$uri\n";
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$self->done;
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exit 0;
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}
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if ($self->{channel} =~ m/^#/ and length $output > 22 and open my $fh, '<:encoding(UTF-8)', "$RealBin/../history/$self->{channel}-$self->{lang}.last-output") {
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my $last_output;
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my $time = <$fh>;
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if (gettimeofday - $time > 60 * 4) {
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close $fh;
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} else {
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while (my $line = <$fh>) {
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$last_output .= $line;
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}
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close $fh;
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if ((not $self->{factoid}) and defined $last_output and $last_output eq $output) {
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print "Same output.\n";
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$self->done;
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exit 0;
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}
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}
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}
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print encode('UTF-8', "$output\n");
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my $file = "$RealBin/../history/$self->{channel}-$self->{lang}.last-output";
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open my $fh, '>:encoding(UTF-8)', $file or die "Couldn't open $file: $!";
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my $now = gettimeofday;
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print $fh "$now\n";
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print $fh "$output";
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close $fh;
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}
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sub debug($self, $text, $timestamp = 1) {
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if (not exists $self->{logh}) {
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open $self->{logh}, '>>:encoding(UTF-8)', "$RealBin/../log.txt" or die "Could not open log file: $!";
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}
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if ($timestamp) {
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my ($sec, $usec) = gettimeofday;
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my $time = strftime "%a %b %e %Y %H:%M:%S", localtime $sec;
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$time .= sprintf ".%03d", $usec / 1000;
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print { $self->{logh} } "$time :: $text";
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} else {
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print { $self->{logh} } $text;
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}
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}
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sub done($self) {
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if ($self->{logh}) {
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close $self->{logh};
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delete $self->{logh};
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}
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}
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1;
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