/usr/bin/latexmlc is in latexml 0.8.1-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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eval 'exec /usr/bin/perl -w -S $0 ${1+"$@"}'
if 0; # not running under some shell
# /=====================================================================\ #
# | latexmlc | #
# | client/server conversion program | #
# |=====================================================================| #
# | Part of LaTeXML: | #
# | Public domain software, produced as part of work done by the | #
# | United States Government & not subject to copyright in the US. | #
# |---------------------------------------------------------------------| #
# | Bruce Miller <bruce.miller@nist.gov> #_# | #
# | http://dlmf.nist.gov/LaTeXML/ (o o) | #
# \=========================================================ooo==U==ooo=/ #
use strict;
use warnings;
use Cwd qw(cwd abs_path);
use IO::Socket;
my $RealBin_safe;
use FindBin;
use File::Spec::Functions;
use File::Which;
BEGIN {
if ($FindBin::RealBin =~ /^([^\0]+)\z/) { # Valid Unix path TODO: Windows, revisit regexp
$RealBin_safe = $1; }
die 'Fatal:IO:tainted RealBin was tainted! Failing...'
unless ($RealBin_safe && (-e catfile($RealBin_safe, 'latexmlc')));
}
# TODO: We probably want file cat for things like /../lib instead of spelling out a Unix path
use lib catdir($RealBin_safe, "..", "lib");
#TODO: Do we ever care about ENV PATH that much? Do we miss on some feature like that?
#$ENV{PATH} = "$RealBin_safe:/usr/bin:/usr/local/bin:";
use LaTeXML;
use LaTeXML::Common::Config;
use URI::Escape;
use HTTP::Response;
use HTTP::Request;
use JSON::XS qw(decode_json);
binmode(STDERR, ":encoding(UTF-8)");
binmode(STDOUT, ":encoding(UTF-8)");
# Determine if a socket server is installed locally and obtain its pathname:
my $latexmls;
$latexmls = catfile($RealBin_safe, 'latexmls') if (-e catfile($RealBin_safe, 'latexmls'));
$latexmls = which('latexmls') unless defined $latexmls;
# Some defaults:
my $opts = LaTeXML::Common::Config->new(input_limit => 100);
# Parse and load command-line options
$opts->read(\@ARGV);
my $keyvals = $opts->scan_to_keyvals(\@ARGV);
# Client-side options:
my ($port, $address, $expire, $local) = map { $opts->get($_) } qw(port address expire);
$address = '127.0.0.1' if !$address || ($address eq 'localhost');
$address =~ s/^(\w+)\:\/\///; # strip away any protocol
my $route = '/';
if ($address =~ s/\/(.+)$//) { # strip away route
$route = '/' . $1;
}
# Local if peerhost is localhost:
$local = ($expire && ($expire == -1)) || ($address eq '127.0.0.1');
$expire = -1 unless ((defined $expire) && $latexmls);
$port = ($local ? 3334 : 80) unless $port; #Fall back if all fails...
#***************************************************************************
#Add some base, so that relative paths work
my $cdir = abs_path(cwd());
$cdir =~ s/ /\\ /g;
if (!$opts->get('base')) {
$opts->set('base', $cdir);
push @$keyvals, ['base', $cdir];
}
# Record if destination exists, for summary
my $deststat;
$deststat = (stat($opts->get('destination')))[9] if $opts->get('destination');
$deststat = 0 unless defined $deststat;
push @$keyvals, ['path', $cdir]; #add current path, to ensure never empty
push @{ $opts->get('paths') }, $cdir;
# Get the full source of interest
my $source = $opts->get('source');
$opts->delete('source');
if (!$source) { print STDERR "Input was empty.\n"; exit 1; }
if ($source eq '-') {
{ local $/ = undef;
$source = "literal:" . <STDIN>;
# Set the source in the keyvals to be sent over the wire:
@$keyvals = grep { $_->[0] !~ /source|tex/ } @$keyvals;
push @$keyvals, $source;
} }
#***************************************************************************
# Prepare output variables:
my ($result, $status, $log);
# TODO: Talk to the web service via HTTP
#Setup client and communicate
my $sock = $latexmls && IO::Socket::INET->new(
PeerAddr => $address,
PeerPort => $port,
Proto => 'tcp',
); #Attempt connecting to a service
if ((!$sock) && $local && ($expire == -1)) {
# Don't boot a server, single job requested:
require LaTeXML;
$opts->set('local', 1);
$opts->push('debug', 'LaTeXML') unless $opts->get('log'); # If we don't request log, print to STDERR
my $converter = LaTeXML->get_converter($opts);
$converter->prepare_session($opts);
my $response = $converter->convert($source);
($result, $status, $log) = map { $$response{$_} } qw(result status log) if defined $response;
} else {
my $message = q{};
foreach my $entry (@$keyvals) {
my ($key, $value) = ($$entry[0], $$entry[1]);
$message .= uri_escape($key) . ($value ? '=' . uri_escape($value) : '') . '&';
}
chop $message;
#Startup daemon and feed in args, if needed
system($latexmls, "--port=$port",
"--expire=$expire", "--autoflush=" . $opts->get('input_limit')) if !$sock && $local;
my $http_response = ($local
? process_local($address, $port, $route, $message, $sock)
: process_remote($address, $port, $route, $message, $sock));
if ($http_response->is_success) {
my $response = decode_json($http_response->content);
($result, $status, $log) = map { $$response{$_} } qw(result status log) if defined $response;
} else {
print STDERR "Fatal:HTTP:" . $http_response->code() . " " . $http_response->message() . "\n"; exit 1;
}
}
#***************************************************************************
### Common treatment of output:
# Special features for latexmls:
if ($log) {
if ($opts->get('log')) {
my $clog = $opts->get('log');
my $log_handle;
if (!open($log_handle, ">", $clog)) {
print STDERR "Fatal:IO:forbidden Couldn't open log file $clog : $!\n";
exit 1;
}
print $log_handle $log;
close $log_handle;
} else { print STDERR $log, "\n"; } #STDERR log otherwise
}
if ($result) {
if ($opts->get('destination')) {
my $output_handle;
if (!open($output_handle, ">", $opts->get('destination'))) {
print STDERR "Fatal:IO:forbidden Couldn't open output file " . $opts->get('destination') . ": $!";
exit 1;
}
print $output_handle $result;
close $output_handle;
} else { print STDOUT $result, "\n"; } #Output to STDOUT
}
# Print summary, if requested, to STDERR
if ($opts->get('destination')) {
print STDERR $status;
print STDERR summary($opts->get('destination'), $deststat);
}
# == Helpers ==
sub summary {
my ($destination, $prior_stat) = @_;
my $new_stat = (stat($destination))[9] || 0;
return ($new_stat && ($prior_stat != $new_stat)) ? "\nWrote $destination\n" :
"\nError! Did not write file $destination\n";
}
sub process_local {
my ($req_address, $req_port, $req_route, $req_message, $req_sock) = @_;
#daemon is running, reconnect and feed in request
$req_sock = IO::Socket::INET->new(
PeerAddr => $req_address,
PeerPort => $req_port,
Proto => 'tcp',
) unless $req_sock;
if (!$req_sock) {
print STDERR "Fatal:perl:socket-create Could not create socket: $!\n";
exit 1; }
my $req_message_length = length($req_message);
$req_route = "$req_address:$req_port" unless $req_route;
my $payload = <<"PAYLOADEND";
POST $route HTTP/1.0
Host: $address:$req_port
User-Agent: latexmlc
Content-Type: application/x-www-form-urlencoded
Content-Length: $req_message_length
$req_message
PAYLOADEND
$req_sock->send($payload);
my $response_string = q{};
{ local $/ = undef;
$response_string = <$req_sock>; }
close($req_sock);
return ($response_string
? HTTP::Response->parse($response_string)
: HTTP::Response->new(500, 'Internal Server Error')); }
sub process_remote {
my ($req_address, $req_port, $req_route, $req_message, $req_sock) = @_;
$req_sock->close if $req_sock; # No need of the socket here, using LWP instead
my $payload = HTTP::Request->new(POST => "http://$req_address:$req_port$req_route");
$payload->header('User-Agent', 'latexmlc');
$payload->header('Content-Type', 'application/x-www-form-urlencoded');
$payload->content($req_message);
require LWP::UserAgent;
my $ua = LWP::UserAgent->new;
$ua->timeout(10);
return $ua->request($payload); }
#**********************************************************************
__END__
=head1 NAME
C<latexmlc> - A omni-executable for LaTeXML, capable of
stand-alone socket-server and (soon) web service conversion.
=head1 SYNOPSYS
See the OPTIONS section in L<LaTeXML::Common::Config> for usage information.
Also consult latexmlc --help
=head1 DESCRIPTION
L<latexmlc> provides a client which automatically sets up a LaTeXML local server
if necessary (via L<latexmls>).
If such server already exists, the client proceeds to communicate normally.
A stand-alone conversion (the default) can also be requested via --timeout=-1
=head1 SEE ALSO
L<latexmls>, L<ltxmojo>, L<LaTeXML::Common::Config>
=cut
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