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+eval '(exit $?0)' && eval 'exec perl -S $0 ${1+"$@"}' && eval 'exec perl -S $0 $argv:q'
+ if 0;
+use strict;
+#
+# vpe.pl
+#
+# Copyright (C) 2000 Heiko Oberdiek.
+#
+# This program may be distributed and/or modified under the
+# conditions of the LaTeX Project Public License, either version 1.2
+# of this license or (at your option) any later version.
+# The latest version of this license is in
+# http://www.latex-project.org/lppl.txt
+# and version 1.2 or later is part of all distributions of LaTeX
+# version 1999/12/01 or later.
+#
+# See file "vpe.txt" for a list of files that belong to this project.
+#
+# This file "vpe.pl" may be renamed to "vpe"
+# for installation purposes.
+#
+my $file = "vpe.pl";
+my $program = uc($&) if $file =~ /^\w+/;
+my $version = "0.1";
+my $date = "2000/09/15";
+my $author = "Heiko Oberdiek";
+my $copyright = "Copyright (c) 2000 by $author.";
+#
+# History:
+# 2000/09/15 v0.1: First release.
+#
+
+### program identification
+my $title = "$program $version, $date - $copyright\n";
+
+### editor call
+# %F: file name
+# %L: line number
+my $EditorCall = "xterm -e joe +%d %s";
+$EditorCall = $ENV{TEXEDIT} if $ENV{TEXEDIT};
+$EditorCall = $ENV{VPE} if $ENV{VPE};
+
+### error strings
+my $Error = "!!! Error:"; # error prefix
+
+my $usage = <<"END_OF_USAGE";
+${title}
+Depending on the name of the script `vpe' works in four modes:
+
+* [vpe] Syntax: vpe <pdf file>[.pdf]
+ The pdf file is scanned for actions created by VTeX,
+ that start an editor with the source file at the
+ specified line under Windows.
+ A symbol link is made from the source file name
+ extended by the extension `.vpe' to this script.
+ The line number is encoded in the path and the
+ action is changed to start this script.
+
+* [sty] Internal for vpe.sty:
+ Syntax: vpe --sty [--progname=...] <latex file> <vpe file>
+
+* [system] Internal for vpe.sty:
+ Syntax: vpe --system <vpe file>
+
+* [launch] Syntax: <source file name>.vpe
+ The script decodes the line number in the path of
+ the source file name and starts an editor with
+ this file at that line number.
+
+Options:
+ --help: print usage.
+ --verbose: print additional informations during running.
+ --force: force symbol links
+ --delete: delete symbol links
+ --sty: internal for `vpe.sty' (get absolute file name and lines)
+ --system: internal for `vpe.sty' (get system info linux or win)
+ --progname: latex, pdflatex, elatex, pdfelatex
+END_OF_USAGE
+
+### options
+$::opt_verbose = 0;
+$::opt_help = 0;
+$::opt_force = 0;
+$::opt_delete = 0;
+$::opt_sty = 0;
+$::opt_system = 0;
+$::opt_progname = "latex";
+use Getopt::Long;
+GetOptions(
+ "help!",
+ "verbose!",
+ "force!",
+ "delete!",
+ "sty!",
+ "system!",
+ "progname=s",
+) or die $usage;
+if ($::opt_help) {
+ die $usage;
+}
+
+if ($::opt_sty and $::opt_system) {
+ die "$usage" .
+ "$Error Options --sty and --system cannot used together!\n";
+}
+
+###################
+### launch mode ###
+###################
+if ($0 =~ /\.vpe/) {
+
+ @ARGV == 0 or
+ die "$usage$Error Too many arguments [launch mode]!\n";
+
+ my $file = "";
+ $0 =~ m|(^[\./]+\./)(.+)\.vpe$| or
+ die "$Error Cannot extract line number ($0)!\n";
+ my $str = $1;
+ $file = "/$2";
+
+ my $line = "";
+ while ($str ne "") {
+ $str =~ m|^(/*)(\.?)\./(.*)$| or
+ die "$Error Parse error!\n";
+ $line .= length($1) + (($2 eq ".") ? 5 : 0);
+ $str = $3;
+ }
+
+ my $callstr = $EditorCall;
+ $EditorCall =~ s/%s/$file/;
+ $EditorCall =~ s/%d/$line/;
+ print "File: $file, line: $line\n" if $::opt_verbose;
+ exec($EditorCall);
+ exit 1;
+}
+
+###
+### used by both sty and system mode:
+###
+my $system = "linux";
+$system = "" if $^O =~ /os2/i;
+$system = "" if $^O =~ /mac/i;
+$system = "win" if $^O =~ /dos/i;
+$system = "win" if $^O =~ /win/i;
+
+################
+### sty mode ###
+################
+if ($::opt_sty) {
+
+ @ARGV == 2 or
+ die "$usage$Error Wrong arguments [sty mode]!\n";
+
+ my $vpefile = $ARGV[1];
+ print "VPE file: $vpefile\n" if $::opt_verbose;
+
+ my $file = `kpsewhich -progname=$::opt_progname $ARGV[0]`;
+ chomp $file;
+ if (!($file =~ m|^/| or $file =~ m|^\w:|)) {
+ use Cwd;
+ $file = cwd() . "/" . $file;
+ $file =~ s|/[^/]+/\.\./|/|g;
+ $file =~ s|/\./|/|g;
+ }
+ -f $file or
+ die "$Error Cannot find file `$file' [sty mode]!\n";
+ print "File: $file\n" if $::opt_verbose;
+
+ my $last = 0;
+ if (open(IN, $file)) {
+ while (<IN>) {
+ $last++;
+ }
+ }
+ if ($last == 0) {
+ $last = 10000;
+ }
+ print "Last line: $last\n" if $::opt_verbose;
+
+ open(OUT, ">>$vpefile") or
+ die "$Error Cannot open file `$vpefile`!\n";
+ print OUT "\\vpeentry{$file}{$last}\n";
+
+ exit 1;
+}
+
+###################
+### system mode ###
+###################
+if ($::opt_system) {
+
+ @ARGV == 1 or
+ die "$usage$Error Wrong arguments [system mode]!\n";
+
+ my $vpefile = $ARGV[0];
+ print "VPE file: $vpefile\n" if $::opt_verbose;
+
+ open(OUT, ">>$vpefile") or
+ die "$Error Cannot open file `$vpefile`!\n";
+ print OUT "\\vpesystem{$system}\n";
+
+ exit 1;
+}
+
+################
+### vpe mode ###
+################
+if (@ARGV < 1) {
+ die "$usage$Error Missing pdf file [vpe mode]!\n";
+}
+if (@ARGV > 2) {
+ die "$usage$Error Too many arguments [vpe mode]!\n";
+}
+
+my $pdffile = $ARGV[0];
+if (!-f $pdffile) {
+ my $name = $pdffile;
+ $pdffile .= ".pdf";
+ -f $pdffile or
+ die "$Error File `$name' not found [vpe mode]!\n";
+}
+
+open(IN, "+<$pdffile") or
+ die "$Error Cannot open `$pdffile' [vpe mode]!\n";
+binmode(IN);
+my %symlinks = ();
+while (<IN>) {
+
+ if (m|/F\([\./]*(/.*)\.vpe\)|) {
+ $symlinks{$1} = 1;
+ next;
+ }
+
+ my $do = 0;
+ my ($action, $file, $line, $type);
+ # my $color; # only for debugging
+
+ if (m|^
+ /A \s* << \s*
+ /Type \s* /Action \s*
+ /S \s* /Launch \s*
+ /Win \s* << \s*
+ /F \s* \(aftcomp.exe\) \s*
+ /P \s* \("(.*)\" \s+ \d+\-(\d+)\) \s*
+ >> \s*
+ >> \s*
+ $
+ |x
+ ) {
+ $action = $_;
+ $file = $1;
+ $line = $2;
+ # $color = "/C[0 0 1]"; # only for debugging
+ $type = "aftcomp";
+ $do = 1;
+ }
+
+ if (m|^
+ /A \s* << \s*
+ /Type \s* /Action \s*
+ /S \s* /Launch \s*
+ /Win \s* << \s*
+ /F \s* \(repos.exe\) \s*
+ /P \s* \(
+ "(.*)" \s*
+ "(\d+)" \s*
+ "(.*)" \s*
+ "(\d+)"
+ \) \s*
+ >> \s*
+ >> \s*
+ $
+ |x
+ ) {
+ $action = $_;
+ if ($3 eq "") {
+ $file = $1;
+ $line = $2;
+ }
+ else {
+ # ???
+ $file = $1;
+ $line = $2;
+ }
+ # $color = "/C[1 0 0]"; # only for debugging
+ $type = "repos";
+ $do = 1;
+ }
+
+ if ($do) {
+ my $length = length($action);
+ print "* File: $file, line: $line, type: $type\n" if $::opt_verbose;
+
+ if (!($file =~ m|^/|)) {
+ print STDERR "$Error File `$file' lacks of absolute path!\n";
+ next;
+ }
+
+ if (!$::opt_delete) {
+ if ($line <= 0) {
+ $line = 1;
+ }
+
+ my $newaction = "";
+ {
+ my $digit = substr($line, 0, 1);
+ if ($digit <= 5) {
+ $newaction .= "/" x $digit;
+ }
+ else {
+ $newaction .= "/" x ($digit - 5) . ".";
+ }
+ $newaction .= "./";
+ my $rest = $line;
+ while (($rest = substr($rest, 1)) ne "") {
+ $digit = substr($rest, 0, 1);
+ if ($digit < 5) {
+ $newaction .= "/" x $digit;
+ }
+ else {
+ $newaction .= "/" x ($digit - 5) . ".";
+ }
+ $newaction .= "./";
+ }
+ }
+ $newaction .= substr($file, 1) . ".vpe";
+ $newaction = # $color . # only for debugging
+ "/A<</Type/Action/S/Launch/F($newaction)>>";
+ $newaction .= " " x ($length - length($newaction) - 1);
+ if (length($newaction) > $length) {
+ print STDERR "$Error Action too long!\n";
+ next;
+ }
+
+ seek(IN, -length($action), 1);
+ print IN $newaction;
+ }
+
+ $symlinks{$file} = 1;
+ }
+}
+
+if (keys(%symlinks)) {
+
+ my $this = $0;
+ if (!$::opt_delete) {
+ if (!-f $0 or !-x $0) {
+ $this = `which $0`;
+ ($this ne "") or die "$Error Cannot find this script!\n";
+ }
+ if (!($this =~ m|^/|)) {
+ use Cwd;
+ $this = cwd() . "/" . $this;
+ }
+ $this =~ s|/[^/]+/\.\./|/|g;
+ $this =~ s|/\./|/|g;
+ }
+
+ if ($::opt_delete) {
+ print "Delete symlinks:\n";
+ }
+ else {
+ if ($::opt_force) {
+ print "Forced symlinks to $this:\n";
+ }
+ else {
+ print "Symlinks to $this:\n";
+ }
+ }
+
+ foreach (keys(%symlinks)) {
+ my $sym = $_ . ".vpe";
+ print " $sym [";
+
+ if ($::opt_delete) {
+ if (!-l $sym) {
+ print "ok, not existing]\n";
+ next;
+ }
+ unlink($sym);
+ if (!-l $sym) {
+ print "ok, deleted]\n";
+ next;
+ }
+ print "failed]\n";
+ next;
+ }
+ if ($::opt_force) {
+ if (-l $sym) {
+ unlink($sym);
+ if (-l $sym) {
+ print "deletion failed]\n";
+ next;
+ }
+ if (symlink($this, $sym)) {
+ print "ok, deleted and created]\n";
+ next;
+ }
+ print "deleted, creation failed]\n";
+ next;
+ }
+ if (symlink($this, $sym)) {
+ print "ok, created]\n";
+ next;
+ }
+ print "creation failed]\n";
+ next;
+ }
+ if (-f $sym) {
+ print "exists]\n";
+ next;
+ }
+ if (symlink($this, $sym)) {
+ print "ok, created]\n";
+ next;
+ }
+ print "failed]\n";
+ next;
+ }
+}
+__END__
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