From d4e31287b5927fa1b910e3142a9036526a895e85 Mon Sep 17 00:00:00 2001
From: Karl Berry <karl@freefriends.org>
Date: Mon, 1 Oct 2007 13:36:29 +0000
Subject: perltex update (30sep07)

git-svn-id: svn://tug.org/texlive/trunk@5079 c570f23f-e606-0410-a88d-b1316a301751
---
 Build/source/texk/texlive/perltex | 65 ++++++++++++++++++++++++++++++++++++++-
 1 file changed, 64 insertions(+), 1 deletion(-)

(limited to 'Build')

diff --git a/Build/source/texk/texlive/perltex b/Build/source/texk/texlive/perltex
index f5bc0d1a186..2cd326f5f57 100644
--- a/Build/source/texk/texlive/perltex
+++ b/Build/source/texk/texlive/perltex
@@ -52,6 +52,8 @@ my $toflag;
 my $fromflag;
 my $doneflag;
 my $logfile;
+my $styfile;
+my @macroexpansions;
 my $sandbox = new Safe;
 my $sandbox_eval;
 my $latexpid;
@@ -60,6 +62,7 @@ Getopt::Long::Configure("require_order", "pass_through");
 GetOptions("help"     => sub {pod2usage(-verbose => 1)},
            "latex=s"  => \$latexprog,
            "safe!"    => \$runsafely,
+           "makesty"  => sub {$styfile = "noperltex.sty"},
            "permit=s" => \@permittedops) || pod2usage(2);
 @latexcmdline = @ARGV;
 my $firstcmd = 0;
@@ -96,6 +99,9 @@ foreach my $file ($toperl, $fromperl, $toflag, $fromflag, $doneflag) {
     unlink $file while -e $file;
 }
 open (LOGFILE, ">$logfile") || die "open(\"$logfile\"): $!\n";
+if (defined $styfile) {
+    open (STYFILE, ">$styfile") || die "open(\"$styfile\"): $!\n";
+}
 defined ($latexpid = fork) || die "fork: $!\n";
 unshift @latexcmdline, $latexprog;
 if (!$latexpid) {
@@ -173,7 +179,7 @@ while (1) {
             print LOGFILE "# ===> $warningmsg\n\n";
         }
     }
-    $result="" if !$result || $optag eq "RUN";
+    $result = "" if !$result || $optag eq "RUN";
     if ($@) {
         my $msg = $@;
         $msg =~ s/at \(eval \d+\) line \d+\W+//;
@@ -202,6 +208,7 @@ while (1) {
         $helpstring =~ s/\.  /.\\space\\space /g;
         $result .= "{$helpstring}";
     }
+    push @macroexpansions, $result if defined $styfile && $optag eq "USE";
     print LOGFILE "%" x 30, " LATEX RESULT ", "%" x 30, "\n";
     print LOGFILE $result, "\n\n";
     $result .= '\endinput';
@@ -224,6 +231,46 @@ END {
         kill (9, $latexpid);
         exit 1;
     }
+
+    if (defined $styfile) {
+        print STYFILE <<"STYFILEHEADER1";
+\\NeedsTeXFormat{LaTeX2e}[1999/12/01]
+\\ProvidesPackage{noperltex}
+    [2007/09/29 v1.4 Perl-free version of PerlTeX specific to $jobname.tex]
+STYFILEHEADER1
+        ;
+        print STYFILE <<'STYFILEHEADER2';
+\RequirePackage{filecontents}
+
+\let\noperltex@PackageError=\PackageError
+\renewcommand{\PackageError}[3]{}
+\RequirePackage{perltex}
+\let\PackageError=\noperltex@PackageError
+
+\newcount\plmac@macro@invocation@num
+\gdef\plmac@show@placeholder#1#2\@empty{%
+  \ifx#1U\relax
+    \endgroup
+    \advance\plmac@macro@invocation@num by 1\relax
+    \global\plmac@macro@invocation@num=\plmac@macro@invocation@num
+    \input{noperltex-\the\plmac@macro@invocation@num.tex}%
+  \else
+    \endgroup
+  \fi
+}
+STYFILEHEADER2
+        ;
+        foreach my $e (0 .. $#macroexpansions) {
+            print STYFILE "\n";
+            printf STYFILE "%% Invocation #%d\n", 1+$e;
+                printf STYFILE "\\begin{filecontents}{noperltex-%d.tex}\n", 1+$e;
+            print STYFILE $macroexpansions[$e], "\\endinput\n";
+            print STYFILE "\\end{filecontents}\n";
+        }
+        print STYFILE "\\endinput\n";
+        close STYFILE;
+    }
+
     exit 0;
 }
 
@@ -240,6 +287,7 @@ perltex
 [B<--latex>=I<program>]
 [B<-->[B<no>]B<safe>]
 [B<--permit>=I<feature>]
+[B<--makesty]
 [I<latex options>]
 
 =head1 DESCRIPTION
@@ -295,6 +343,17 @@ option, which can be specified more than once on the command line,
 enables finer-grained control over the B<perltex> sandbox.  See
 L<Opcode> for more information.
 
+=item B<--makesty>
+
+Generate a LaTeX style file called F<noperltex.sty>.  Replacing the
+document's C<\usepackage{perltex}> line with C<\usepackage{noperltex}>
+produces the same output but does not require PerlTeX, making the
+document suitable for distribution to people who do not have PerlTeX
+installed.  The disadvantage is that F<noperltex.sty> is specific to
+the document that produced it.  Any changes to the document's PerlTeX
+macro definitions or macro invocations necessitates rerunning
+B<perltex> with the B<--makesty> option.
+
 =back
 
 These options are then followed by whatever options are normally
@@ -376,6 +435,10 @@ valid data
 ``flag'' file whose existence indicates that F<jobname.ffpl> has been
 deleted
 
+=item F<noperltex-#.tex>
+
+file generated by F<noperltex.sty> for each PerlTeX macro invocation
+
 =back
 
 =head1 NOTES
-- 
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