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#!/usr/bin/perl
# ----------------------------------------------------------------------------
# "THE BEER-WARE LICENSE" (Revision 42):
# <joerg@FreeBSD.ORG> wrote this file. As long as you retain this notice you
# can do whatever you want with this stuff. If we meet some day, and you think
# this stuff is worth it, you can buy me a beer in return. Joerg Wunsch
# ----------------------------------------------------------------------------
#
# Parse the generated tree.js file, and insert a <noscript> tree into the
# HTML source.
#
# $Id: unjs.pl,v 1.2 2003/01/20 21:05:19 joerg_wunsch Exp $
#
die "usage: unjs tree.js tree.html index.html" unless $#ARGV == 2;
$treejs = $ARGV[0];
$treehtml = $ARGV[1];
$indexhtml = $ARGV[2];
parsejs($treejs) || exit 1;
open(HTML, $treehtml) || die "Cannot open $treehtml: $!\n";
open(NEW, ">${treehtml}.new") ||
die "Cannot create ${treehtml}.new: $!\n";
while (<HTML>) {
print NEW;
if (/^<\/script>$/) {
print NEW "<noscript>\n";
print NEW $nojs;
print NEW "</noscript>\n";
}
}
close(NEW);
close(HTML);
rename($treehtml, "${treehtml}.bak") &&
rename("${treehtml}.new", $treehtml);
open(HTML, $indexhtml) || die "Cannot open $indexhtml: $!\n";
open(NEW, ">${indexhtml}.new") ||
die "Cannot create ${indexhtml}.new: $!\n";
while (<HTML>) {
print NEW;
if (/^<\/frameset>$/) {
print NEW "<noframes>\n";
print NEW $nojs;
print NEW "</noframes>\n";
}
}
close(NEW);
close(HTML);
rename($indexhtml, "${indexhtml}.bak") &&
rename("${indexhtml}.new", $indexhtml);
exit(0);
sub parsejs
{
my ($f) = @_;
my ($i, $err);
open(JS, $f) || die "Cannot open $f: $!\n";
while ($l = <JS>) {
chomp $l;
$resvar = undef;
$insvar = undef;
$l =~ s/^\s+//;
if ($l =~ /^([A-Za-z][A-Za-z0-9]*)\s*=\s*/) {
# variable assignment
$resvar = $1;
$l = $';
}
$i = parsefun($l);
if ($i == 0) {
$errs++;
next;
}
}
close(JS);
return $errs == 0;
}
sub parsefun
{
my ($line) = @_;
my $fun, $arg;
if ($line !~ /^([A-Za-z]+)[(](.*)[)]$/) {
warn "item ignored: $line\n";
return 0;
}
$fun = $1;
$arg = $2;
if ($fun ne "gFld" && $fun ne "gLnk" &&
$fun ne "insFld" && $fun ne "insDoc") {
warn "function $fun unknown\n";
return 0;
}
if ($fun =~ /^ins(.*)/) {
parseins($1, $arg) || return 0;
} elsif ($fun =~ /^g(.*)/) {
parseg($1, $arg) || return 0;
}
return 1;
}
sub parseg
{
my ($name, $line) = @_;
if ($line !~ /^["](.*)["],\s*["](.*)["],\s*["](.*)["]/) {
warn "arglist expected: $line\n";
return 0;
}
$text = $1;
$tag = $2;
$lnk = $3;
if ($name eq "Fld") {
if ($lnk ne "") {
$nojs .= "<a href=\"$lnk\" target=\"basefrm\"><b>$text</b></a><br>\n";
} else {
$nojs .= "$text<br>\n";
}
} else {
# gLnk
if ($lnk ne "") {
$nojs .= "<a href=\"$lnk\" target=\"basefrm\">$text</a><br>\n";
} else {
# Huh, link without target?
$nojs .= "$text<br>\n";
}
}
}
sub parseins
{
my ($name, $line) = @_;
if ($line !~ /^([A-Za-z][A-Za-z0-9]*),\s*/) {
warn "variable expected: $line\n";
return;
}
$insvar = $1;
parsefun($') || return 0;
return 1;
}
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