CTAN sync 202310120304

1 files changed, 99 insertions, 0 deletions

diff --git a/support/easydtx/edtx2dtx.pl b/support/easydtx/edtx2dtx.pl
new file mode 100755
index 0000000000..f3965b1a48
--- /dev/null
+++ b/support/easydtx/edtx2dtx.pl
@@ -0,0 +1,99 @@
+#!/usr/bin/env perl
+
+# This file is a part of TeX package EasyDTX, available at
+# https://ctan.org/pkg/easydtx and https://github.com/sasozivanovic/easydtx.
+#
+# Copyright (c) 2023- Saso Zivanovic <saso.zivanovic@guest.arnes.si>
+#
+# This program 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 3 of the License, or
+# (at your option) any later version.
+# 
+# This program 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 should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+# The files belonging to this work and covered by LPPL are listed in
+# <texmf>/doc/support/easydtx/FILES.
+
+use strict;
+use Getopt::Long;
+
+my $usage = <<END;
+EasyDTX: convert .edtx into .dtx
+Usage: edtx2dtx filename.edtx > filename.dtx
+END
+
+my $VERSION = '0.1.0';
+my ($help,  $print_version);
+GetOptions(
+    "help|h|?"  => \$help,
+    "version|V"  => \$print_version,
+    ) or die $usage;
+if ($help) {print($usage); exit 0}
+if ($print_version) { print("edtx2dtx $VERSION\n"); exit 0 }
+die $usage unless @ARGV == 1;
+
+sub begin_macrocode { print("%    \\begin{macrocode}\n"); }
+sub end_macrocode   { print("%    \\end{macrocode}\n");   }
+
+sub process_edtx {
+    my $indoc = 1;
+    while (<>) {
+	if (/^%    \\end{macrocode}/) { # trailer starts here
+	    end_macrocode unless ($indoc);
+	    last;
+	} elsif (/^%    \\begin{macrocode}/) {
+	    die "Nested \\begin{macrocode}";
+	} elsif (/^ *(%%+)/) { # code: multiple comments
+	    begin_macrocode if ($indoc);
+	    print;
+	    $indoc = 0;
+	} elsif (/^%(<[^>]*>)(.*)$/) { # code: unindented guard
+	    begin_macrocode if ($indoc);
+	    print;
+	    $indoc = 0;
+	} elsif (/^( *)%(<[^>]*>) *(.*)$/) { # code: indented guard
+	    begin_macrocode if ($indoc);
+	    print("%$2$1$3\n");
+	    $indoc = 0;
+	} elsif (/^% *(.*)$/) { # doc: unindented comment
+	    end_macrocode unless ($indoc);
+	    print;
+	    $indoc = 1;
+	} elsif (/^( ?)( *)% *(.*)$/) { # doc: indented comment
+	    end_macrocode unless ($indoc);
+	    print "%$2$3\n";
+	    $indoc = 1;
+	} else { # code
+	    begin_macrocode if ($indoc);
+	    print;
+	    $indoc = 0;
+	}
+    }
+}
+
+my $edtx = @ARGV[0];
+my $dtx = $edtx;
+$dtx =~ s/\.edtx$/.dtx/;
+
+my $first = 1;
+while (<>) {
+    if ($first and s/$edtx +(.*)/$dtx (generated from $edtx by edtx2dtx)/) {
+	print;
+	$first = 0;
+    } elsif (/^%    \\begin{macrocode}/) {
+	process_edtx;
+    } elsif (/^%    \\end{macrocode}/) {
+	die "\\end{macrocode} without the opening \\begin{macrocode}!";
+    } else {
+	print;
+    }
+}
+
+