286 lines
7.1 KiB
Perl
Executable file
286 lines
7.1 KiB
Perl
Executable file
#! /usr/bin/env perl
|
|
|
|
# ghighlight - A simple preprocessor for adding code highlighting in a groff file
|
|
|
|
# Copyright (C) 2014-2018 Free Software Foundation, Inc.
|
|
|
|
# Written by Bernd Warken <groff-bernd.warken-72@web.de>.
|
|
|
|
my $version = '0.9.0';
|
|
|
|
# This file is part of 'ghighlight', which is part of 'groff'.
|
|
|
|
# 'groff' is free software; you can redistribute it and/or modify it
|
|
# under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
|
|
# 'groff' is distributed in the hope that it will be useful, but
|
|
# WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
# General Public License for more details.
|
|
|
|
# You can find a copy of the GNU General Public License in the internet
|
|
# at <http://www.gnu.org/licenses/gpl-2.0.html>.
|
|
|
|
########################################################################
|
|
|
|
use strict;
|
|
use warnings;
|
|
#use diagnostics;
|
|
|
|
# current working directory
|
|
use Cwd;
|
|
|
|
# $Bin is the directory where this script is located
|
|
use FindBin;
|
|
|
|
# open3 for a bidirectional communication with a child process
|
|
use IPC::Open3;
|
|
|
|
|
|
########################################################################
|
|
# system variables and exported variables
|
|
########################################################################
|
|
|
|
$\ = "\n"; # final part for print command
|
|
|
|
########################################################################
|
|
# read-only variables with double-@ construct
|
|
########################################################################
|
|
|
|
our $File_split_env_sh;
|
|
our $File_version_sh;
|
|
our $Groff_Version;
|
|
|
|
my $before_make; # script before run of 'make'
|
|
{
|
|
my $at = '@';
|
|
$before_make = 1 if '@VERSION@' eq "${at}VERSION${at}";
|
|
}
|
|
|
|
my %at_at;
|
|
my $file_perl_test_pl;
|
|
my $groffer_libdir;
|
|
|
|
if ($before_make) {
|
|
my $highlight_source_dir = $FindBin::Bin;
|
|
$at_at{'BINDIR'} = $highlight_source_dir;
|
|
$at_at{'G'} = '';
|
|
} else {
|
|
$at_at{'BINDIR'} = '@BINDIR@';
|
|
$at_at{'G'} = '@g@';
|
|
}
|
|
|
|
|
|
########################################################################
|
|
# options
|
|
########################################################################
|
|
|
|
foreach (@ARGV) {
|
|
if ( /^(-h|--h|--he|--hel|--help)$/ ) {
|
|
print q(Usage for the 'ghighlight' program:);
|
|
print 'ghighlight [-] [--] [filespec...] normal file name arguments';
|
|
print 'ghighlight [-h|--help] gives usage information';
|
|
print 'ghighlight [-v|--version] displays the version number';
|
|
print q(This program is a 'groff' preprocessor that handles highlighting source code ) .
|
|
q(parts in 'roff' files.);
|
|
exit;
|
|
} elsif ( /^(-v|--v|--ve|--ver|--vers|--versi|--versio|--version)$/ ) {
|
|
print q('ghighlight' version ) . $version;
|
|
exit;
|
|
}
|
|
}
|
|
|
|
my $macros = "groff_mm";
|
|
if ( $ENV{'GHLENABLECOLOR'} ) {
|
|
$macros = "groff_mm_color";
|
|
}
|
|
########################################################################
|
|
# input
|
|
########################################################################
|
|
|
|
my $source_mode = 0;
|
|
|
|
my @lines = ();
|
|
|
|
|
|
sub getTroffLine {
|
|
my ($opt) = @_;
|
|
if ($opt =~ /^ps=([0-9]+)/) {".ps $1"}
|
|
elsif ($opt =~ /^vs=(\S+)/) {".vs $1"}
|
|
else { print STDERR "didn't recognised '$opt'"; ""}
|
|
}
|
|
|
|
sub getTroffLineOpposite {
|
|
my ($opt) = @_;
|
|
if ($opt =~ /^ps=/) {".ps"}
|
|
elsif ($opt =~ /^vs=/) {".vs"}
|
|
else { print STDERR "didn't recognised '$opt'"; ""}
|
|
}
|
|
|
|
# language for codeblocks
|
|
my $lang = '';
|
|
my @options = ();
|
|
foreach (<>) {
|
|
chomp;
|
|
s/\s+$//;
|
|
my $line = $_;
|
|
my $is_dot_Source = $line =~ /^[.']\s*(``|SOURCE)(|\s+.*)$/;
|
|
|
|
unless ( $is_dot_Source ) { # not a '.SOURCE' line
|
|
if ( $source_mode ) { # is running in SOURCE mode
|
|
push @lines, $line;
|
|
} else { # normal line, not SOURCE-related
|
|
print $line;
|
|
}
|
|
next;
|
|
}
|
|
|
|
|
|
##########
|
|
# now the line is a '.SOURCE' line
|
|
|
|
my $args = $line;
|
|
$args =~ s/\s+$//; # remove final spaces
|
|
$args =~ s/^[.']\s*(``|SOURCE)\s*//; # omit .source part, leave the arguments
|
|
|
|
my @args = split /\s+/, $args;
|
|
|
|
##########
|
|
# start SOURCE mode
|
|
|
|
$lang = $args[0] if ( @args > 0 && $args[0] ne 'stop' );
|
|
|
|
if ( @args > 0 && $args[0] ne 'stop' ) {
|
|
# For '.``' no args or first arg 'start' means opening 'SOURCE' mode.
|
|
# Everything else means an ending command.
|
|
|
|
shift @args;
|
|
@options = @args;
|
|
|
|
if ( $source_mode ) {
|
|
# '.SOURCE' was started twice, ignore
|
|
print STDERR q('.``' starter was run several times);
|
|
next;
|
|
} else { # new SOURCE start
|
|
$source_mode = 1;
|
|
@lines = ();
|
|
next;
|
|
}
|
|
}
|
|
|
|
##########
|
|
# now the line must be a SOURCE ending line (stop)
|
|
|
|
unless ( $source_mode ) {
|
|
print STDERR 'ghighlight.pl: there was a SOURCE ending without being in ' .
|
|
'SOURCE mode:';
|
|
print STDERR ' ' . $line;
|
|
next;
|
|
}
|
|
|
|
$source_mode = 0; # 'SOURCE' stop calling is correct
|
|
|
|
my $shopts = $ENV{"SHOPTS"} || "";
|
|
|
|
##########
|
|
# Run source-highlight on lines
|
|
# Check if language was specified
|
|
my $cmdline = "source-highlight -f $macros $shopts --output STDOUT";
|
|
if ($lang ne '') {
|
|
$cmdline .= " -s $lang";
|
|
}
|
|
|
|
# Start `source-highlight`
|
|
my $pid = open3(my $child_in, my $child_out, my $child_err, $cmdline)
|
|
or die "open3() failed $!";
|
|
|
|
# Provide source code to `source-highlight` in its standard input
|
|
print $child_in $_ for @lines;
|
|
close $child_in;
|
|
|
|
if (my $v = $ENV{"GH_INTRO"}) {
|
|
print for split /;/, $v;
|
|
}
|
|
|
|
for (@options) {
|
|
my $l = getTroffLine $_;
|
|
print $l if ($l ne "");
|
|
}
|
|
|
|
# Print `source-highlight` output
|
|
while (<$child_out>) {
|
|
chomp;
|
|
print;
|
|
}
|
|
close $child_out;
|
|
|
|
for (reverse @options) {
|
|
my $l = getTroffLineOpposite $_;
|
|
print $l if ($l ne "");
|
|
}
|
|
|
|
if (my $v = $ENV{"GH_OUTRO"}) {
|
|
print for split /;/, $v;
|
|
}
|
|
|
|
my @print_res = (1);
|
|
|
|
# Start argument processing
|
|
|
|
# remove 'stop' arg if exists
|
|
# shift @args if ( $args[0] eq 'stop' );
|
|
|
|
# if ( @args == 0 ) {
|
|
# # no args for saving, so @print_res doesn't matter
|
|
# next;
|
|
# }
|
|
# my @var_names = ();
|
|
# my @mode_names = ();
|
|
|
|
# my $mode = '.ds';
|
|
# for ( @args ) {
|
|
# if ( /^\.?ds$/ ) {
|
|
# $mode = '.ds';
|
|
# next;
|
|
# }
|
|
# if ( /^\.?nr$/ ) {
|
|
# $mode = '.nr';
|
|
# next;
|
|
# }
|
|
# push @mode_names, $mode;
|
|
# push @var_names, $_;
|
|
# }
|
|
|
|
# my $n_vars = @var_names;
|
|
|
|
# if ( $n_vars < $n_res ) {
|
|
# print STDERR 'ghighlight: not enough variables for Python part: ' .
|
|
# $n_vars . ' variables for ' . $n_res . ' output lines.';
|
|
# } elsif ( $n_vars > $n_res ) {
|
|
# print STDERR 'ghighlight: too many variablenames for Python part: ' .
|
|
# $n_vars . ' variables for ' . $n_res . ' output lines.';
|
|
# }
|
|
# if ( $n_vars < $n_res ) {
|
|
# print STDERR 'ghighlight: not enough variables for Python part: ' .
|
|
# $n_vars . ' variables for ' . $n_res . ' output lines.';
|
|
# }
|
|
|
|
# my $n_min = $n_res;
|
|
# $n_min = $n_vars if ( $n_vars < $n_res );
|
|
# exit unless ( $n_min );
|
|
# $n_min -= 1; # for starting with 0
|
|
|
|
# for my $i ( 0..$n_min ) {
|
|
# my $value = $print_res[$i];
|
|
# chomp $value;
|
|
# print $mode_names[$i] . ' ' . $var_names[$i] . ' ' . $value;
|
|
# }
|
|
}
|
|
|
|
|
|
1;
|
|
# Local Variables:
|
|
# mode: CPerl
|
|
# End:
|