===================================================================
RCS file: /cvs/cvsweb/cvsweb.cgi,v
retrieving revision 1.1.1.37
retrieving revision 1.9
diff -u -p -r1.1.1.37 -r1.9
--- cvsweb/cvsweb.cgi	2007/03/17 21:52:33	1.1.1.37
+++ cvsweb/cvsweb.cgi	1997/07/19 00:54:40	1.9
@@ -1,4522 +1,706 @@
-#!/usr/bin/perl -T
+#!/usr/bin/perl -s
 #
-# cvsweb - a CGI interface to CVS trees.
+# cvsweb - a CGI interface to the CVS tree.
 #
-# Written in their spare time by
-#             Bill Fenner          <fenner@FreeBSD.org>   (original work)
-# extended by Henner Zeller        <zeller@think.de>,
-#             Henrik Nordstrom     <hno@hem.passagen.se>
-#             Ken Coar             <coar@Apache.Org>
-#             Dick Balaska         <dick@buckosoft.com>
-#             Akinori MUSHA        <knu@FreeBSD.org>
-#             Jens-Uwe Mager       <jum@helios.de>
-#             Ville Skyttä         <scop@FreeBSD.org>
-#             Vassilii Khachaturov <vassilii@tarunz.org>
+# Written by Bill Fenner <fenner@parc.xerox.com> on his own time.
+# Insert BSD copyright here.
 #
-# Based on:
-# * Bill Fenners cvsweb.cgi revision 1.28 available from:
-#   http://www.FreeBSD.org/cgi/cvsweb.cgi/www/en/cgi/cvsweb.cgi
+#HTTP_USER_AGENT: Mozilla/1.1N (X11; I; SunOS 4.1.3_U1 sun4m) via proxy gateway CERN-HTTPD/3.0 libwww/2.17
+#SERVER_NAME: www.freebsd.org
+#QUERY_STRING: baz
+#SCRIPT_FILENAME: /usr/local/www/cgi-bin/env.pl
+#SERVER_PORT: 80
+#HTTP_ACCEPT: */*, image/gif, image/x-xbitmap, image/jpeg
+#SERVER_PROTOCOL: HTTP/1.0
+#HTTP_COOKIE: s=beta26429821397802167
+#PATH_INFO: /foo/bar
+#REMOTE_ADDR: 13.1.64.94
+#DOCUMENT_ROOT: /usr/local/www/data/
+#PATH: /sbin:/bin:/usr/sbin:/usr/bin
+#PATH_TRANSLATED: /usr/local/www/data//foo/bar
+#GATEWAY_INTERFACE: CGI/1.1
+#REQUEST_METHOD: GET
+#SCRIPT_NAME: /cgi-bin/env.pl
+#SERVER_SOFTWARE: Apache/1.0.0
+#REMOTE_HOST: beta.xerox.com
+#SERVER_ADMIN: webmaster@freebsd.org
 #
-# Copyright (c) 1996-1998 Bill Fenner
-#           (c) 1998-1999 Henner Zeller
-#           (c) 1999      Henrik Nordstrom
-#           (c) 2000-2002 Akinori MUSHA
-#           (c) 2002-2005 Ville Skyttä
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in the
-#    documentation and/or other materials provided with the distribution.
-#
-# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
-#
-# $FreeBSD: projects/cvsweb/cvsweb.cgi,v 1.295 2005/09/25 20:28:51 scop Exp $
-# $zId: cvsweb.cgi,v 1.112 2001/07/24 13:03:16 hzeller Exp $
-# $Idaemons: /home/cvs/cvsweb/cvsweb.cgi,v 1.84 2001/10/07 20:50:10 knu Exp $
-#
-###
+require 'timelocal.pl';
+require 'ctime.pl';
 
-require 5.006;
+$hsty_base = "";
+require 'cgi-style.pl';
 
-use strict;
+$cvsroot = '/home/ncvs';
+$intro = "
+This is a WWW interface to the FreeBSD CVS tree.
+You can browse the file hierarchy by picking directories
+(which have slashes after them, e.g. <b>src/</b>).
+If you pick a file, you will see the revision history
+for that file.
+Selecting a revision number will download that revision of
+the file.  There is a link at each revision to display
+diffs between that revision and the previous one, and
+a form at the bottom of the page that allows you to
+display diffs between arbitrary revisions.
+<p>
+If you would like to use this CGI script on your own web server and
+CVS tree, see <A HREF=\"http://www.freebsd.org/~fenner/cvsweb/\">
+the CVSWeb distribution site</A>.
+<p>
+Please send any suggestions, comments, etc. to
+<A HREF=\"mailto:fenner@freebsd.org\">Bill Fenner &lt;fenner@freebsd.org&gt;</A>
+";
+$shortinstr = "
+Click on a directory to enter that directory. Click on a file to display
+its revision history and to get a
+chance to display diffs between revisions. 
+";
 
-use warnings;
-use filetest qw(access);
+$verbose = $v;
+($where = $ENV{'PATH_INFO'}) =~ s|^/||;
+$where =~ s|/$||;
+$fullname = $cvsroot . '/' . $where;
+($scriptname = $ENV{'SCRIPT_NAME'}) =~ s|^/?|/|;
+$scriptname =~ s|/$||;
+$scriptwhere = $scriptname . '/' . $where;
+$scriptwhere =~ s|/$||;
 
-use vars qw (
-  $VERSION $CheckoutMagic $MimeTypes $DEBUG
-  $config $allow_version_select
-  @CVSrepositories @CVSROOT %CVSROOT %CVSROOTdescr
-  %MIRRORS %DEFAULTVALUE %ICONS %MTYPES
-  %DIFF_COMMANDS @DIFFTYPES %DIFFTYPES @LOGSORTKEYS %LOGSORTKEYS
-  %alltags %fileinfo %tags @branchnames %nameprinted
-  %symrev %revsym @allrevisions %date %author @revdisplayorder
-  @revisions %state %difflines %log %branchpoint @revorder $keywordsubstitution
-  $prcgi @prcategories $re_prcategories $prkeyword $re_prkeyword $mancgi
-  $doCheckout $scriptname $scriptwhere
-  $where $Browser $nofilelinks $maycompress @stickyvars %funcline_regexp
-  $is_links $is_lynx $is_w3m $is_msie $is_mozilla3 $is_textbased
-  %input $query $barequery $sortby $bydate $byrev $byauthor
-  $bylog $byfile $defaultDiffType $logsort $cvstree $cvsroot
-  $charset $output_filter
-  @command_path %CMD $allow_compress $backicon $diricon $fileicon $graphicon
-  $fullname $cvstreedefault $logo $defaulttitle $address $binfileicon
-  $long_intro $short_instruction $shortLogLen $show_author
-  $tablepadding $hr_breakable $showfunc $hr_ignwhite $hr_ignkeysubst
-  $inputTextSize $mime_types $allow_annotate $allow_markup $allow_mailtos
-  $allow_log_extra $allow_dir_extra $allow_source_extra
-  $allow_cvsgraph $cvsgraph_config $use_java_script $edit_option_form
-  $show_subdir_lastmod $show_log_in_markup $preformat_in_markup
-  $tabstop $state $annTable $sel @ForbiddenFiles
-  $use_descriptions %descriptions @mytz $dwhere
-  $use_moddate $gzip_open $file_list_len
-  $allow_tar @tar_options @gzip_options @zip_options @cvs_options
-  @annotate_options @rcsdiff_options
-  $HTML_DOCTYPE $HTML_META $cssurl $CSS $cvshistory_url
-  $allow_enscript @enscript_options %enscript_types
-);
-
-use Cwd                   qw(abs_path);
-use File::Basename        qw(dirname);
-use File::Path            qw(rmtree);
-use File::Spec::Functions qw(canonpath catdir catfile curdir devnull rootdir
-                             tmpdir updir);
-use File::Temp            qw(tempdir tempfile);
-use IPC::Run              qw();
-use Time::Local           qw(timegm);
-use URI::Escape           qw(uri_escape uri_unescape);
-
-use constant VALID_PATH   => qr/^([[:^cntrl:]]+)$/o;
-use constant VALID_TAG1   => qr/^([a-zA-Z][[:graph:]]*)$/o;
-use constant VALID_TAG2   => qr/^([^\$,.:;@]+)$/o;
-use constant CVSWEBMARKUP => qr{^text/(x-cvsweb|vnd\.viewcvs)-markup$}io;
-use constant LOG_FILESEPR => qr/^={77}$/o;
-use constant LOG_REVSEPR  => qr/^-{28}$/o;
-
-use constant HAS_ZLIB     => eval { require Compress::Zlib; };
-use constant HAS_EDIFF    => eval { require String::Ediff;  };
-
-# -----------------------------------------------------------------------------
-
-# All global initialization that can be done in compile time should go to
-# the BEGIN block.  Persistent environments, such as mod_perl, will benefit
-# from this.
-
-BEGIN
-{
-  $VERSION = '3.0.6';
-
-  $HTML_DOCTYPE =
-    '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ' .
-    '"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">';
-
-  $HTML_META = <<EOM;
-<meta name="robots" content="nofollow" />
-<meta name="generator" content="FreeBSD-CVSweb $VERSION" />
-<meta http-equiv="Content-Script-Type" content="text/javascript" />
-<meta http-equiv="Content-Style-Type" content="text/css" />
-EOM
-
-  # Use MIME::Types for MIME type lookups if it's available.
-  eval {
-    require MIME::Types;
-    $MimeTypes = MIME::Types->new(only_complete => 1);
-  };
-  $MimeTypes = undef if $@;
-
-  $CheckoutMagic = '~checkout~';
-}
-
-# -----------------------------------------------------------------------------
-
-sub printDiffSelect($);
-sub printDiffSelectStickyVars();
-sub getDiffLinks($$$);
-sub printLogSortSelect($);
-sub findLastModifiedSubdirs(@);
-sub htmlify_sub(&$);
-sub htmlify($;$);
-sub spacedHtmlText($;$);
-sub link($$);
-sub revcmp($$);
-sub fatal($$@);
-sub config_error($$);
-sub redirect($;$);
-sub safeglob($);
-sub search_path($);
-sub getEnscriptHL($);
-sub getMimeType($;$);
-sub head($;$);
-sub scan_directives(@);
-sub openOutputFilter();
-sub doAnnotate($$);
-sub doCheckout($$$);
-sub doEnscript($$$;$);
-sub doGraph();
-sub doGraphView();
-sub cvswebMarkup($$$$$$;$);
-sub viewable($);
-sub doDiff($$$$$$);
-sub getDirLogs($$@);
-sub readLog($;$);
-sub printLog($$$;$$);
-sub doLog($);
-sub flush_diff_rows($$$$);
-sub human_readable_diff($$);
-sub navigateHeader($$$$$;$);
-sub plural_write($$);
-sub readableTime($$);
-sub clickablePath($$);
-sub chooseCVSRoot();
-sub chooseMirror();
-sub fileSortCmp();
-sub download_url($$;$);
-sub download_link($$$;$);
-sub display_url($$;$);
-sub display_link($$;$$);
-sub graph_link($;$);
-sub history_link($$;$);
-sub toggleQuery($;$);
-sub htmlquote($);
-sub htmlunquote($);
-sub uri_escape_path($);
-sub http_header(;$$);
-sub html_header($;$);
-sub html_footer();
-sub link_tags($);
-sub forbidden($);
-sub startproc(@);
-sub runproc(@);
-sub checkout_to_temp($$$);
-
-# Get rid of unsafe environment vars.  Don't do this in the BEGIN block
-# (think mod_perl)...
-delete(@ENV{qw(PATH IFS CDPATH ENV BASH_ENV)});
-
-my ($mydir) = (dirname($0) =~ /(.*)/);    # untaint
-
-##### Start of Configuration Area ########
-
-# == EDIT this ==
-# Locations to search for user configuration, in order:
-for (catfile($mydir, 'cvsweb.conf'), '/usr/local/etc/cvsweb/cvsweb.conf') {
-  if (-r $_) {
-    $config = $_;
-    last;
-  }
-}
-
-##### End of Configuration Area   ########
-
-undef $mydir;
-
-######## Configuration parameters #########
-
-@CVSrepositories = @CVSROOT = %CVSROOT = %MIRRORS = %DEFAULTVALUE = %ICONS =
-  %MTYPES = %tags = %alltags = %fileinfo = %DIFF_COMMANDS = ();
-
-$cvstreedefault = $logo = $defaulttitle =
-  $address = $long_intro = $short_instruction = $shortLogLen = $show_author =
-  $tablepadding = $hr_breakable = $showfunc = $hr_ignwhite =
-  $hr_ignkeysubst = $inputTextSize = $mime_types = $allow_annotate =
-  $allow_markup = $allow_compress = $use_java_script = $edit_option_form =
-  $show_subdir_lastmod = $show_log_in_markup = $preformat_in_markup =
-  $tabstop = $use_moddate = $gzip_open = $DEBUG = $allow_cvsgraph =
-  $cvsgraph_config = $cvshistory_url = $allow_tar = undef;
-
-$allow_version_select = $allow_mailtos = $allow_log_extra = 1;
-
-@DIFFTYPES = qw(h H u c s);
-@DIFFTYPES{@DIFFTYPES} = (
-  {
-    'descr'   => 'colored',
-    'opts'    => ['-u'],
-    'colored' => 1,
-  },
-  {
-    'descr'   => 'long colored',
-    'opts'    => ['--unified=15'],
-    'colored' => 1,
-  },
-  {
-    'descr'   => 'unified',
-    'opts'    => ['-u'],
-    'colored' => 0,
-  },
-  {
-    'descr'   => 'context',
-    'opts'    => ['-c'],
-    'colored' => 0,
-  },
-  {
-    'descr'   => 'side by side',
-    # width=168 should be enough to support 80 character line lengths
-    'opts'    => ['--side-by-side', '--width=168'],
-    'colored' => 0,
-  },
-);
-
-@LOGSORTKEYS = qw(cvs date rev);
-@LOGSORTKEYS{@LOGSORTKEYS} = (
-  { descr => 'Not sorted',  },
-  { descr => 'Commit date', },
-  { descr => 'Revision',    },
-);
-
-##### End of configuration parameters #####
-
-my $pathinfo = '';
-if (defined($ENV{PATH_INFO}) && $ENV{PATH_INFO} ne '') {
-  ($pathinfo) = ($ENV{PATH_INFO} =~ VALID_PATH)
-    or fatal('500 Internal Error',
-             'Illegal PATH_INFO in environment: <code>%s</code>',
-             $ENV{PATH_INFO});
-}
-if ($ENV{SCRIPT_NAME}) {
-  ($scriptname) = ($ENV{SCRIPT_NAME} =~ VALID_PATH)
-    or fatal('500 Internal Error',
-             'Illegal SCRIPT_NAME in environment: <code>%s</code>',
-             $ENV{SCRIPT_NAME});
-}
-
-$scriptname    = '' unless defined($scriptname);
-
-$where         =  $pathinfo;
-$doCheckout    =  $where =~ s|^/$CheckoutMagic/|/|o;
-$where         =~ s|^/||;
-$scriptname    =~ s|^/*|/|;
-
-# Let's workaround thttpd's stupidity..
-if ($scriptname =~ m|/$|) {
-  $pathinfo .= '/';
-  my $re = quotemeta $pathinfo;
-  $scriptname =~ s/$re$//;
-}
-
-# $scriptname : the URI escaped path to this script
-# $where      : the path in the CVS repository (without leading /, or only /)
-# $scriptwhere: the URI escaped $scriptname + '/' + $where
-$scriptname   = uri_escape_path($scriptname);
-$scriptwhere  = join('/', $scriptname, uri_escape_path($where));
-$where        = '/' if ($where eq '');
-
-# In text-based browsers, it's very annoying to have two links per file;
-# skip linking the image for them.
-
-$Browser     = $ENV{HTTP_USER_AGENT} || '';
-$is_links    = ($Browser =~ m`^E?Links `);
-$is_lynx     = ($Browser =~ m`^Lynx/`i);
-$is_w3m      = ($Browser =~ m`^w3m/`i);
-$is_msie     = ($Browser =~ m`MSIE`);
-$is_mozilla3 = ($Browser =~ m`^Mozilla/[3-9]`);
-
-$is_textbased = ($is_links || $is_lynx || $is_w3m);
-
-$nofilelinks = $is_textbased;
-
-# newer browsers accept gzip content encoding
-# and state this in a header
-# (netscape did always but didn't state it)
-# It has been reported that these
-#  braindamaged MS-Internet Exploders claim that they
-# accept gzip .. but don't in fact and
-# display garbage then :-/
-# Turn off gzip if running under mod_perl and no zlib is available,
-# piping does not work as expected inside the server.
-$maycompress = (
-  ((defined($ENV{HTTP_ACCEPT_ENCODING})
-    && $ENV{HTTP_ACCEPT_ENCODING} =~ /gzip/)
-   || $is_mozilla3)
-  && !$is_msie
-  && !(defined($ENV{MOD_PERL}) && !HAS_ZLIB)
-);
-
-# Parameters that will be sticky in all constructed links/query strings.
-@stickyvars =
-  qw(cvsroot hideattic ignorecase sortby logsort f only_with_tag ln
-     hidecvsroot hidenonreadable);
-
-#
-# Load configuration.
-#
-if (-f $config) {
-  do "$config" or config_error($config, $@);
-} else {
-  fatal("500 Internal Error",
-        'Configuration not found.  Set the parameter <code>$config</code> in cvsweb.cgi to your <b>cvsweb.conf</b> configuration file first.');
-}
-
-# Try to find a readable dir where we can cd into.  Some abs_path()
-# implementations as well as various cvs operations require such a dir to
-# work properly.
-{
-  local $^W = 0;
-  for my $dir (tmpdir(), rootdir()) {
-    last if (-r $dir && chdir($dir));
-  }
-}
-
-$CSS = $cssurl ?
-  sprintf("<link rel=\"stylesheet\" type=\"text/css\" href=\"%s\" />\n",
-          htmlquote($cssurl)) : '';
-
-# --- input parameters
-
-my %query = ();
-if (defined($ENV{QUERY_STRING})) {
-  for my $p (split(/[;&]+/, $ENV{QUERY_STRING})) {
-    next unless $p;
-    $p =~ y/+/ /;
-    my ($key, $val) = split(/=/, $p, 2);
-    next unless defined($key);
-    $val = 1 unless defined($val);
-    ($key = uri_unescape($key)) =~ /[[:graph:]]/ or next;
-    ($val = uri_unescape($val)) =~ /[[:graph:]]/ or next;
-    $query{$key} = $val;
-  }
-}
-
-undef %input;
-
-my $t;
-for my $p (qw(graph hideattic hidecvsroot hidenonreadable ignorecase ln copt
-              makeimage options tarball)) {
-  $t = $query{$p};
-  if (defined($t)) {
-    ($input{$p}) = ($t =~ /^([01]|on)$/)
-      or fatal('500 Internal Error',
-               'Invalid boolean value: <code>%s=%s</code>', $p, $t);
-  }
-}
-for my $p (qw(annotate r1 r2 rev tr1 tr2)) {
-  $t = $query{$p};
-  if (defined($t)) {
-    if (($p eq 'r1' || $p eq 'r2') && $t eq 'text') {
-      # Special case for the "Use text field" option in the log view diff form.
-      $input{$p} = $t;
-      next;
-    } elsif (($p eq 'rev' || $p eq 'annotate') && ($t eq '.' || $t eq 'HEAD')){
-      # Another special case, allow linking to latest revision using these.
-      $input{$p} = '.';
-      next;
-    }
-    my ($rev, $tag) = split(/:/, $t, 2);
-    ($input{$p}) = ($rev =~ /^(\d+(?:\.\d+)*)$/)
-      or fatal('500 Internal Error',
-               'Invalid revision: <code>%s=%s</code>', $p, $t);
-    if (defined($tag)) {
-      ($tag) = ($tag =~ VALID_TAG1)
-        or fatal('500 Internal Error',
-                 'Invalid tag/branch name in revision: <code>%s=%s</code>',
-                 $p, $t);
-      ($tag) = ($tag =~ VALID_TAG2)
-        or fatal('500 Internal Error',
-                 'Invalid tag/branch name in revision: <code>%s=%s</code>',
-                 $p, $t);
-      $input{$p} .= ':' . $tag;
-    }
-  }
-}
-$t = defined($query{only_with_tag}) ?
-  $query{only_with_tag} : $query{only_on_branch}; # Backwards compatibility.
-if (defined($t)) {
-  ($input{only_with_tag}) = ($t =~ VALID_TAG1)
-    or fatal('500 Internal Error',
-             'Invalid tag/branch name: <code>%s</code>', $t);
-  ($input{only_with_tag}) = ($t =~ VALID_TAG2)
-    or fatal('500 Internal Error',
-             'Invalid tag/branch name: <code>%s</code>', $t);
-}
-$t = $query{logsort};
-if (defined($t)) {
-  ($input{logsort}) = ($t =~ /^(cvs|date|rev)$/)
-    or fatal('500 Internal Error',
-             'Unsupported log sort key: <code>%s</code>', $t);
-}
-$t = $query{f};
-if (defined($t)) {
-  ($input{f}) = ($t =~ /^(([hH]|[ucs]c?)|ext\d*)$/)
-    or fatal('500 Internal Error',
-             'Unsupported diff format: <code>%s</code>', $t);
-}
-$t = $query{sortby};
-if (defined($t)) {
-  ($input{sortby}) = ($t =~ /^(file|date|rev|author|log)$/)
-    or fatal('500 Internal Error',
-             'Unsupported dir sort key: <code>%s</code>', $t);
-}
-$t = $query{'content-type'};
-if (defined($t)) {
-  ($input{'content-type'}) = ($t =~ m|^([-0-9A-Za-z]+/[-0-9A-Za-z\.\+]+)$|)
-    or fatal('500 Internal Error',
-             'Unsupported content type: <code>%s</code>', $t);
-}
-$t = $query{cvsroot};
-if (defined($t)) {
-  ($input{cvsroot}) = ($t =~ /^([[:print:]]+)$/)
-    or fatal('500 Internal Error',
-             'Invalid symbolic CVS root name: <code>%s</code>', $t);
-}
-$t = $query{path};
-if (defined($t)) {
-  ($input{path}) = ($t =~ VALID_PATH)
-    or fatal('500 Internal Error',
-             'Invalid path: <code>%s</code>', $t);
-}
-undef($t);
-undef(%query);
-
-# --- end input parameters
-
-#
-# CVS roots
-#
-my $rootfound = 0;
-for (my $i = 0; $i < scalar(@CVSrepositories); $i += 2) {
-  my $key = $CVSrepositories[$i];
-  my ($descr, $root) = @{$CVSrepositories[$i+1]};
-  $root = canonpath($root);
-  unless (-d $root) {
-    warn("Root '$root' defined in \@CVSrepositories is not a directory, " .
-         'entry ignored');
-    next;
-  }
-  $rootfound ||= 1;
-  $cvstreedefault = $key unless defined($cvstreedefault);
-  $CVSROOTdescr{$key} = $descr;
-  $CVSROOT{$key} = $root;
-  push(@CVSROOT, $key);
-}
-unless ($rootfound) {
-  fatal('500 Internal Error',
-        'No valid CVS roots found!  See <code>@CVSrepositories</code> in ' .
-        'the configuration file (<code>%s</code>).',
-        $config);
-}
-undef $rootfound;
-
-#
-# Default CVS root
-#
-if (!defined($CVSROOT{$cvstreedefault})) {
-  fatal("500 Internal Error",
-        '<code>$cvstreedefault</code> points to a repository (%s) not ' .
-        'defined in <code>@CVSrepositories</code> in your configuration ' .
-        'file (<code>%s</code>).',
-        $cvstreedefault,
-        $config);
-}
-
-$DEFAULTVALUE{cvsroot} = $cvstreedefault;
-
-while (my ($key, $defval) = each %DEFAULTVALUE) {
-
-  # Replace not given parameters with defaults.
-  next unless (defined($defval) && $defval =~ /\S/ && !defined($input{$key}));
-
-  # Empty checkboxes in forms return nothing, so we define a helper parameter
-  # in these forms (copt) which indicates that we just set parameters with a
-  # checkbox.
-  if ($input{copt}) {
-
-    # 'copt' is set -> the result of empty input checkbox
-    # -> set to zero (disable) if default is a boolean (0|1).
-    $input{$key} = 0 if ($defval eq '0' || $defval eq '1');
-
-  } else {
-
-    # 'copt' isn't set --> empty input is not the result
-    # of empty input checkbox --> set default.
-    $input{$key} = $defval;
-  }
-}
-
-$barequery = "";
-my @barequery;
-foreach (@stickyvars) {
-
-  # construct a query string with the sticky non default parameters set
-  if (defined($input{$_})
-      && !(defined($DEFAULTVALUE{$_}) && $input{$_} eq $DEFAULTVALUE{$_}))
-  {
-    push(@barequery, join('=', uri_escape($_), uri_escape($input{$_})));
-  }
-}
-
-if ($allow_enscript) {
-  push(@DIFFTYPES, qw(uc cc sc));
-  @DIFFTYPES{qw(uc cc sc)} = (
-    {
-     'descr'   => 'unified, colored',
-     'opts'    => ['-u'],
-     'colored' => 0,
-    },
-    {
-     'descr'   => 'context, colored',
-     'opts'    => ['-c'],
-     'colored' => 0,
-    },
-    {
-     'descr'   => 'side by side, colored',
-     # width=168 should be enough to support 80 character line lengths
-     'opts'    => ['--side-by-side', '--width=168'],
-     'colored' => 0,
-    },
-  );
-} else {
-  # No Enscript -> respect difftype, but don't offer colorization.
-  if ($input{f} && $input{f} =~ /^([ucs])c$/) {
-    $input{f} = $1;
-  }
-}
-
-# is there any query ?
-if (@barequery) {
-  $barequery = join (';', @barequery);
-  $query     = "?$barequery";
-  $barequery = ";$barequery";
-} else {
-  $query = "";
-}
-undef @barequery;
-
-if (defined($input{path})) {
-  redirect("$scriptname/$input{path}$query");
-}
-
-# get actual parameters
-{
-  my $sortby = $input{sortby} || 'file';
-  $bydate    = 0;
-  $byrev     = 0;
-  $byauthor  = 0;
-  $bylog     = 0;
-  $byfile    = 0;
-  if ($sortby eq 'date') {
-    $bydate = 1;
-  } elsif ($sortby eq 'rev') {
-    $byrev = 1;
-  } elsif ($sortby eq 'author') {
-    $byauthor = 1;
-  } elsif ($sortby eq 'log') {
-    $bylog = 1;
-  } else {
-    $byfile = 1;
-  }
-}
-
-$defaultDiffType = $input{f};
-
-$logsort = $input{logsort};
-
-# alternate CVS-Tree, configured in cvsweb.conf
-if ($input{cvsroot} && $CVSROOT{$input{cvsroot}}) {
-  $cvstree = $input{cvsroot};
-} else {
-  $cvstree = $cvstreedefault;
-}
-
-$cvsroot = $CVSROOT{$cvstree};
-
-# create icons out of description
-foreach my $k (keys %ICONS) {
-  my ($itxt, $ipath, $iwidth, $iheight) = @{$ICONS{$k}};
-  no strict 'refs';
-  if ($ipath) {
-    ${"${k}icon"} =
-      sprintf('<img src="%s" alt="%s" border="0" width="%d" height="%d" />',
-              htmlquote($ipath), htmlquote($itxt), $iwidth, $iheight);
-  } else {
-    ${"${k}icon"} = $itxt;
-  }
-}
-
-my $config_cvstree = "$config-$cvstree";
-
-# Do some special configuration for cvstrees
-if (-f $config_cvstree) {
-  do "$config_cvstree"
-    or fatal("500 Internal Error",
-             'Error in loading configuration file: %s<br /><br />%s<br />',
-             $config_cvstree, $@);
-}
-undef $config_cvstree;
-
-$re_prcategories  = '(?:' . join ('|', @prcategories) . ')' if @prcategories;
-$re_prkeyword     = quotemeta($prkeyword) if defined($prkeyword);
-$prcgi           .= '%s' if defined($prcgi) && $prcgi !~ /%s/;
-
-$fullname         = catfile($cvsroot, $where);
-
-my $rewrite = 0;
-if ($pathinfo =~ m|//|) {
-  $pathinfo =~ y|/|/|s;
-  $rewrite = 1;
-}
-if (-d $fullname) {
-  if ($pathinfo !~ m|/$|) {
-    $pathinfo .= '/';
-    $rewrite   = 1;
-  }
-} elsif ($pathinfo =~ m|/$|) {
-  chop $pathinfo;
-  $rewrite = 1;
-}
-if ($rewrite) {
-  redirect($scriptname . uri_escape_path($pathinfo) . $query, 1);
-}
-undef $rewrite;
-
-undef $pathinfo;
-
 if (!-d $cvsroot) {
-  fatal("500 Internal Error",
-        '$CVSROOT not found!<p>The server on which the CVS tree lives is probably down.  Please try again in a few minutes.');
+	&fatal("500 Internal Error",'$CVSROOT not found!');
 }
 
-#
-# Short-circuit forbidden things.  Note that $fullname should not change
-# after this, because the rest of the code assumes this check has already
-# been done.
-#
-fatal('403 Forbidden', 'Access to %s forbidden.', $where)
-  if forbidden($fullname);
-
-#
-# Handle tarball downloads before any headers are output.
-#
-if ($input{tarball}) {
-  fatal('403 Forbidden', 'Downloading tarballs is prohibited.')
-    unless $allow_tar;
-
-  my ($module)  =  ($where =~ m,^/?(.*),);    # untaint
-  $module       =~ s,/([^/]*)$,,;
-  my ($ext)     =  ($1 =~ /(\.t(?:ar\.)?gz|\.zip)$/);
-  my ($basedir) =  ($module =~ m,([^/]+)$,);
-
-  if ($basedir eq '' || $module eq '') {
-    fatal('500 Internal Error',
-          'You cannot download the top level directory.');
-  }
-
-  my $istar = ($ext eq '.tar.gz' || $ext eq '.tgz');
-  if ($istar) {
-    fatal('500 Internal Error', 'tar command not found.') unless $CMD{tar};
-    fatal('500 Internal Error', 'gzip command not found.') unless $CMD{gzip};
-  }
-  my $iszip = ($ext eq '.zip');
-  if ($iszip && !$CMD{zip}) {
-    fatal('500 Internal Error', 'zip command not found.');
-  }
-  if (!$istar && !$iszip) {
-    fatal('500 Internal Error', 'Unsupported archive type.');
-  }
-
-  my $tmpexportdir;
-  eval {
-    local $SIG{__DIE__};
-    # Don't use the CLEANUP argument to tempdir() here, since we might be under
-    # mod_perl (the process runs for a long time), unlink explicitly later.
-    $tmpexportdir = tempdir('.cvsweb.XXXXXXXX', TMPDIR => 1);
-  };
-  if ($@) {
-    fatal('500 Internal Error', 'Unable to make temporary directory: %s', $@);
-  }
-  if (!chdir($tmpexportdir)) {
-    fatal('500 Internal Error',
-          "Can't cd to temporary directory %s: %s", $tmpexportdir, $!);
-  }
-
-  my @fatal;
-  my $tag = $input{only_with_tag} || 'HEAD';
-  $tag = 'HEAD' if ($tag eq 'MAIN');
-
-  my @cmd =
-    ($CMD{cvs}, @cvs_options, '-Qd', $cvsroot, 'export', '-r', $tag,
-     '-d', $basedir, $module);
-  my $export_err;
-  my ($errcode, $err) = runproc(\@cmd, '2>', \$export_err);
-  if ($errcode) {
-    @fatal =
-      ('500 Internal Error',
-       'Export failure (exit status %s), output: <pre>%s</pre>',
-       $errcode, $err || $export_err);
-
-  } else {
-
-    $| = 1;    # Essential to get the buffering right.
-    local (*TAR_OUT);
-
-    my (@cmd, $ctype);
-    if ($istar) {
-      my @tar = ($CMD{tar}, @tar_options, '-cf', '-', $basedir);
-      my @gzip = ($CMD{gzip}, @gzip_options, '-c');
-      push(@cmd, \@tar, '|', \@gzip);
-      $ctype = 'application/x-gzip';
-    } elsif ($iszip) {
-      my @zip = ($CMD{zip}, @zip_options, '-r', '-', $basedir);
-      push(@cmd, \@zip, \'');
-      $ctype = 'application/zip';
+if ($query = $ENV{'QUERY_STRING'}) {
+    foreach (split(/&/, $query)) {
+	s/%(..)/sprintf("%c", hex($1))/ge;	# unquote %-quoted
+	if (/(\S+)=(.*)/) {
+	    $input{$1} = $2;
+	} else {
+	    $input{$_}++;
+	}
     }
-    push(@cmd, '>pipe', \*TAR_OUT);
-
-    my ($h, $err) = startproc(@cmd);
-    if ($h) {
-      print "Content-Type: $ctype\r\n\r\n";
-      local $/ = undef;
-      print <TAR_OUT>;
-      $h->finish();
-    } else {
-      @fatal = ('500 Internal Error',
-                '%s failure (exit status %s), output: <pre>%s</pre>',
-                $istar ? 'Tar' : 'Zip', $? >> 8 || -1, $err);
-    }
-  }
-
-  # Clean up.
-  rmtree($tmpexportdir);
-
-  &fatal(@fatal) if @fatal;
-
-  exit;
+    $query = "?" . $query;
 }
-
-##############################
-# View a directory
-###############################
 if (-d $fullname) {
+	opendir(DIR, $fullname) || &fatal("404 Not Found","$where: $!");
+	@dir = readdir(DIR);
+	closedir(DIR);
+	if ($where eq '') {
+	    print &html_header("FreeBSD CVS Repository");
+	    print $intro;
+	} else {
+	    print &html_header("/$where");
+	    print $shortinstr;
+	}
+	print "<p>Current directory: <b>/$where</b>\n";
+	print "<P><HR NOSHADE>\n";
+	# Using <MENU> in this manner violates the HTML2.0 spec but
+	# provides the results that I want in most browsers.  Another
+	# case of layout spooging up HTML.
+	print "<MENU>\n";
+	lookingforattic:
+	for ($i = 0; $i <= $#dir; $i++) {
+		if ($dir[$i] eq "Attic") {
+			last lookingforattic;
+		}
+	}
+	if (!$input{"showattic"} && ($i <= $#dir) &&
+				opendir(DIR, $fullname . "/Attic")) {
+		splice(@dir, $i, 1,
+			grep((s|^|Attic/|,!m|/\.|), readdir(DIR)));
+		closedir(DIR);
+	}
+	# Sort without the Attic/ pathname.
+	foreach (sort {($c=$a)=~s|.*/||;($d=$b)=~s|.*/||;($c cmp $d)} @dir) {
+	    if ($_ eq '.') {
+		next;
+	    }
+	    if (s|^Attic/||) {
+		$attic = " (in the Attic)";
+	    } else {
+		$attic = "";
+	    }
+	    if ($_ eq '..') {
+		next if ($where eq '');
+		($updir = $scriptwhere) =~ s|[^/]+$||;
+		print "<IMG SRC=\"/icons/back.gif\"> ",
+		    &link("Previous Directory",$updir . $query), "<BR>";
+#		print "<IMG SRC=???> ",
+#		    &link("Directory-wide diffs", $scriptwhere . '/*'), "<BR>";
+	    } elsif (-d $fullname . "/" . $_) {
+		print "<IMG SRC=\"/icons/dir.gif\"> ",
+		    &link($_ . "/", $scriptwhere . '/' . $_ . '/' . $query), $attic, "<BR>";
+	    } elsif (s/,v$//) {
+# TODO: add date/time?  How about sorting?
+		print "<IMG SRC=\"/icons/text.gif\"> ",
+		    &link($_, $scriptwhere . '/' .
+			    ($attic ? "Attic/" : "") . $_ . $query),
+		    $attic, "<BR>";
+	    }
+	}
+	print "</MENU>\n";
+	if ($input{"only_on_branch"}) {
+	    print "<HR><FORM METHOD=\"GET\" ACTION=\"${scriptwhere}\">\n";
+	    print "Currently showing only branch $input{'only_on_branch'}.\n";
+	    $input{"only_on_branch"}="";
+	    foreach $k (keys %input) {
+		print "<INPUT TYPE=hidden NAME=$k VALUE=$input{$k}>\n" if $input{$k};
+	    }
+	    print "<INPUT TYPE=SUBMIT VALUE=\"Show all branches\">\n";
+	    print "</FORM>\n";
+	}
+	$formwhere = $scriptwhere;
+	$formwhere =~ s|Attic/?$|| if ($input{"showattic"});
+	print "<HR><FORM METHOD=\"GET\" ACTION=\"${formwhere}\">\n";
+	$input{"showattic"}=!$input{"showattic"};
+	foreach $k (keys %input) {
+	    print "<INPUT TYPE=hidden NAME=$k VALUE=$input{$k}>\n" if $input{$k};
+	}
+	print "<INPUT TYPE=SUBMIT VALUE=\"";
+	print ($input{"showattic"} ? "Show" : "Hide");
+	print " attic directories\">\n";
+	print "</FORM>\n";
+	print &html_footer;
+	print "</BODY></HTML>\n";
+} elsif (-f $fullname . ',v') {
+	if ($input{'rev'} =~ /^[\d\.]+$/) {
+		&checkout($fullname, $input{'rev'});
+		exit;
+	}
+	if ($input{'r1'} && $input{'r2'}) {
+		&dodiff($fullname, $input{'r1'}, $input{'tr1'},
+			$input{'r2'}, $input{'tr2'}, $input{'f'});
+		exit;
+	}
+	open(RCS, "rlog '$fullname'|") || &fatal("500 Internal Error",
+						"Failed to spawn rlog");
+	while (<RCS>) {
+	    print if ($verbose);
+	    if (/^branch:\s+([\d\.]+)/) {
+		$curbranch = $1;
+	    }
+	    if ($symnames) {
+		if (/^\s+([^:]+):\s+([\d\.]+)/) {
+		    $symrev{$1} = $2;
+		    if ($revsym{$2}) {
+			$revsym{$2} .= ", ";
+		    }
+		    $revsym{$2} .= $1;
+		} else {
+		    $symnames = 0;
+		}
+	    } elsif (/^symbolic names/) {
+		$symnames = 1;
+	    } elsif (/^-----/) {
+		last;
+	    }
+	}
 
-  my $dh = do { local (*DH); };
-  opendir($dh, $fullname) or fatal("404 Not Found", '%s: %s', $where, $!);
-  my @dir = grep(!forbidden(catfile($fullname, $_)), readdir($dh));
-  closedir($dh);
-  my @subLevelFiles = findLastModifiedSubdirs(@dir) if $show_subdir_lastmod;
-  my @unreadable = getDirLogs($cvsroot, $where, @subLevelFiles);
+	if ($onlyonbranch = $input{'only_on_branch'}) {
+	    ($onlyonbranch = $symrev{$onlyonbranch}) =~ s/\.0\././;
+	    ($onlybranchpoint = $onlyonbranch) =~ s/\.\d+$//;
+	}
 
-  if ($where eq '/') {
-    html_header($defaulttitle);
-    $long_intro =~ s/!!CVSROOTdescr!!/$CVSROOTdescr{$cvstree}/g;
-    print $long_intro;
-  } else {
-    html_header($where);
-    my $html = (-f catfile($fullname, 'README.cvs.html,v') ||
-                -f catfile($fullname, 'Attic', 'README.cvs.html,v'));
-    my $text = (!$html &&
-                (-f catfile($fullname, 'README.cvs,v') ||
-                 -f catfile($fullname, 'Attic', 'README.cvs,v')));
-    if ($html || $text) {
-      my $rev = $input{only_with_tag} || 'HEAD';
-      my $cr = abs_path($cvsroot) || $cvsroot;
-      my $co = "$where/README.cvs.html" if $html;
-      $co ||= "$where/README.cvs" if $text;
-      # abs_path() taints when run as a CGI...
-      if ($cr =~ VALID_PATH) {
-        $cr = $1;
-      } else {
-        fatal('500 Internal Error', 'Illegal CVS root: <code>%s</code>', $cr);
-      }
-      my @cmd = ($CMD{cvs}, @cvs_options, '-d', $cr, 'co', '-p', "-r$rev",$co);
-      local (*CVS_OUT, *CVS_ERR);
-      my ($h, $err) = startproc(\@cmd, \"", '>pipe', \*CVS_OUT,
-                                '2>pipe', \*CVS_ERR);
-      fatal('500 Internal Error', $err) unless $h;
-      if ($html) {
-        local $/ = undef;
-        print <CVS_OUT>;
-      } else {
-        print "<p>\n";
-        while (<CVS_OUT>) {
-          chomp;
-          print htmlquote($_), '<br />';
-        }
-        print "</p>";
-      }
-      $h->finish();
-    }
-    print $short_instruction;
-  }
-
-  if ($use_descriptions &&
-      open(DESC, catfile($cvsroot, 'CVSROOT', 'descriptions'))) {
-    while (<DESC>) {
-      chomp;
-      my ($dir, $description) = /(\S+)\s+(.*)/;
-      $descriptions{$dir} = $description;
-    }
-    close(DESC);
-  }
-
-  print "<p><a name=\"dirlist\"></a></p>\n";
-
-  # give direct access to dirs
-  if ($where eq '/') {
-    chooseMirror();
-    chooseCVSRoot();
-
-  } else {
-    print '<p>Current directory: <b>', clickablePath($where, 0), '</b>';
-    if ($cvshistory_url) {
-      (my $d = $where) =~ s|^/*(.*?)/*$|$1|;
-      print ' - ', history_link($d, '');
-    }
-    print "</p>\n";
-    print "<p>Current tag: <b>", htmlquote($input{only_with_tag}), "</b></p>\n"
-      if $input{only_with_tag};
-  }
-
-  print "<hr />\n";
-
-  my $infocols = 1;
-
-  printf(<<EOF, 'Directory index of ' . htmlquote($where));
-<table class="dir" width="100%%" cellspacing="0" cellpadding="$tablepadding" summary="%s">
-<tr>
-EOF
-  printf('<th colspan="2"%s>', ($byfile ? ' class="sorted"' : ''));
-
-  if ($byfile) {
-    print 'File';
-  } else {
-    print &link('File',
-                sprintf('./%s#dirlist', toggleQuery('sortby', 'file')));
-  }
-  print "</th>\n";
-
-  # Do not display the other column headers if we do not have any files
-  # with revision information.
-  if (scalar(%fileinfo)) {
-    $infocols++;
-    printf('<th%s>', ($byrev ? ' class="sorted"' : ''));
-
-    if ($byrev) {
-      print 'Rev.';
-    } else {
-      print &link('Rev.',
-                  sprintf('./%s#dirlist', toggleQuery('sortby', 'rev')));
-    }
-    print "</th>\n";
-    $infocols++;
-    printf('<th%s>', ($bydate ? ' class="sorted"' : ''));
-
-    if ($bydate) {
-      print 'Age';
-    } else {
-      print &link('Age',
-                  sprintf('./%s#dirlist', toggleQuery('sortby', 'date')));
-    }
-    print "</th>\n";
-
-    if ($show_author) {
-      $infocols++;
-      printf('<th%s>', ($byauthor ? ' class="sorted"' : ''));
-
-      if ($byauthor) {
-        print 'Author';
-      } else {
-        print
-          &link('Author',
-                sprintf('./%s#dirlist', toggleQuery('sortby', 'author')));
-      }
-      print "</th>\n";
-    }
-    $infocols++;
-    printf('<th%s>', ($bylog ? ' class="sorted"' : ''));
-
-    if ($bylog) {
-      print 'Last log entry';
-    } else {
-      print &link('Last log entry',
-                  sprintf('./%s#dirlist', toggleQuery('sortby', 'log')));
-    }
-    print "</th>\n";
-  } elsif ($use_descriptions) {
-    print "<th>Description</th>\n";
-    $infocols++;
-  }
-  print "</tr>\n";
-
-  my $dirrow = 0;
-
-  my $i;
-  lookingforattic:
-  for ($i = 0; $i <= $#dir; $i++) {
-    if ($dir[$i] eq "Attic") {
-      last lookingforattic;
-    }
-  }
-
-  if (!$input{hideattic}
-      && ($i <= $#dir)
-      && opendir($dh, $fullname . '/Attic'))
-  {
-    splice(@dir, $i, 1, grep((s|^|Attic/|, !m|/\.|), readdir($dh)));
-    closedir($dh);
-  }
-
-  my $hideAtticToggleLink =
-    $input{hideattic}
-    ? ''
-    : &link('[hide]', sprintf('./%s#dirlist', &toggleQuery('hideattic')));
-
-  # Sort without the Attic/ pathname.
-  # place directories first
-
-  my $filesexists;
-  my $filesfound;
-
-  foreach my $file (sort { &fileSortCmp } @dir) {
-
-    next if ($file eq curdir());
-
-    # ignore CVS lock and stale NFS files
-    next if ($file =~ /^\#cvs\.|^,|^\.nfs/); # \# for XEmacs cperl-mode...
-
-    # Check whether to show the CVSROOT path
-    next if ($input{hidecvsroot} && $where eq '/' && $file eq 'CVSROOT');
-
-    # Is it a directory?
-    my $isdir = -d catdir($fullname, $file);
-
-    # Ignore non-readable files and directories?
-    next if ($input{hidenonreadable} && (! -r _ || ($isdir && ! -x _)));
-
-    my $attic = '';
-    if ($file =~ s|^Attic/||) {
-      $attic = ' <span class="attic">(in the Attic) ' .
-        $hideAtticToggleLink . '</span>';
-    }
-
-    if ($file eq updir() || $isdir) {
-      next if ($file eq updir() && $where eq '/');
-      my ($rev, $date, $log, $author, $filename, $keywordsubst) =
-        @{$fileinfo{$file}} if (defined($fileinfo{$file}));
-      printf "<tr class=\"%s\">\n<td class=\"dir\" colspan=\"2\">",
-        ($dirrow % 2) ? 'even' : 'odd';
-
-      if ($file eq updir()) {
-        my $url = "../$query";
-        print $nofilelinks ? $backicon : &link($backicon, $url);
-        print '&nbsp;', &link("Parent Directory", $url);
-
-      } else {
-        my $url = './' . uri_escape_path($file) . "/$query";
-        print '<a name="', htmlquote($file), '"></a>';
-        print $nofilelinks ? $diricon : &link($diricon, $url);
-        print '&nbsp;', &link(htmlquote("$file/"), $url), $attic;
-        if ($file eq "Attic") {
-          print ' <span class="attic">',
-            &link('[show]',
-                  sprintf('./%s#dirlist', &toggleQuery('hideattic'))),
-                    '</span>';
-        }
-      }
-
-      # Show last change in dir
-      if ($filename) {
-        print "</td>\n<td>&nbsp;</td>\n<td class=\"age\">";
-        print readableTime(time() - $date, 0) if $date;
-        print "</td>\n<td class=\"author\">", htmlquote($author)
-          if $show_author;
-        print "</td>\n<td class=\"log\">";
-        $filename =~ s%^[^/]+/%%;
-        print &link(htmlquote("$filename/$rev"),
-                    sprintf('%s/%s%s#rev%s',
-                            uri_escape($file), uri_escape($filename),
-                            $query, $rev)), '<br />';
-        if ($log) {
-          print htmlify(substr($log, 0, $shortLogLen), $allow_dir_extra);
-          print '...' if (length($log) > 80);
-        }
-
-      } else {
-        my $dwhere = ($where ne '/' ? $where : '') . $file;
-
-        if ($use_descriptions && defined $descriptions{$dwhere}) {
-          print '<td colspan="', ($infocols - 1), '">';
-          print $descriptions{$dwhere};
-
-        } elsif ($infocols > 1) {
-
-          # close the row with the appropriate number of
-          # columns, so that the vertical seperators are visible
-          my ($cols) = $infocols;
-          while ($cols > 1) {
-            print "</td>\n<td>&nbsp;";
-            $cols--;
-          }
-        }
-      }
-
-      print "</td>\n</tr>\n";
-      $dirrow++;
-
-    } elsif ($file =~ s/,v$//) {
-
-      my $fileurl = ($attic ? 'Attic/' : '') . uri_escape_path($file);
-      my $url     = './' . $fileurl . $query;
-      $filesexists++;
-      next if (!defined($fileinfo{$file}));
-      my ($rev, $date, $log, $author, $filename, $keywordsubst) =
-        @{$fileinfo{$file}};
-      my $isbinary = $keywordsubst eq 'b' ? 1 : 0;
-      $filesfound++;
-
-      printf "<tr class=\"%s\">\n", ($dirrow % 2) ? 'even' : 'odd';
-      printf '<td class="file"%s>', $allow_cvsgraph ? '' : ' colspan="2"';
-
-      my $icon = $isbinary ? $binfileicon : $fileicon;
-      print $nofilelinks ? $icon : &link($icon, $url);
-      print '&nbsp;', &link(htmlquote($file), $url), $attic;
-      print '</td><td class="graph">', graph_link($fileurl) if $allow_cvsgraph;
-      print "</td>\n<td width=\"30\">", display_link($fileurl, $rev);
-      print "</td>\n<td class=\"age\">";
-      print readableTime(time() - $date, 0) if $date;
-      print "</td>\n<td class=\"author\">", htmlquote($author) if $show_author;
-      print "</td>\n<td class=\"log\">";
-
-      if ($log) {
-        print htmlify(substr($log, 0, $shortLogLen), $allow_dir_extra);
-        print '...' if (length $log > 80);
-      }
-      print "</td>\n</tr>";
-      $dirrow++;
-    }
-    print "\n";
-  }
-
-  print "</table>\n";
-
-  if ((my $num = scalar(@unreadable)) && ! $input{hidenonreadable}) {
-    printf(<<EOF, $num, htmlquote(join(', ', @unreadable)));
-<p>
- <b>NOTE:</b> The following %d unreadable files were ignored:<br />
- <em>%s</em>
-</p>
-EOF
-  }
-
-  if ($filesexists && !$filesfound) {
-    my $currtag = defined($input{only_with_tag}) ?
-      sprintf(' (%s)', htmlquote($input{only_with_tag})) : '';
-    printf(<<EOF, $filesexists, $currtag);
-<p>
- <b>NOTE:</b> There are %d files, but none matches the current tag%s.
-</p>
-EOF
-  }
-
-  if ($input{only_with_tag} && (!%tags || !$tags{$input{only_with_tag}})) {
-    %tags = %alltags;
-  }
-
-  if (scalar %tags
-      || $input{only_with_tag}
-      || $edit_option_form
-      || defined($input{options}))
-  {
-    print "<hr />\n";
-  }
-
-  if (scalar %tags || $input{only_with_tag}) {
-    print "<form method=\"get\" action=\"./\">\n<p>\n";
-    foreach my $var (@stickyvars) {
-      printf("<input type=\"hidden\" name=\"$var\" value=\"%s\" />\n",
-             htmlquote($input{$var}))
-        if (defined($input{$var})
-            && (!defined($DEFAULTVALUE{$var})
-                || $input{$var} ne $DEFAULTVALUE{$var})
-            && $var ne 'only_with_tag');
-    }
-    printf(<<EOF, ($use_java_script ? ' onchange="this.form.submit()"' : ''));
-<span class="nowrap">
-<label for="only_with_tag" accesskey="T">Show only files with tag:
-<select id="only_with_tag" name="only_with_tag"%s>
-<option value="">All tags / default branch</option>
-EOF
-    foreach my $tag (reverse sort { lc $a cmp lc $b } keys %tags) {
-      my $selected =
-        defined($input{only_with_tag}) && $input{only_with_tag} eq $tag;
-      printf("<option%s>%s</option>\n",
-             $selected ? ' selected="selected"' : '',
-             htmlquote($tag));
-    }
-    printf(<<EOF, htmlquote($where));
-</select>
-</label></span> <span class="nowrap">
-<label for="path" accesskey="P">Module path or alias:
-<input type="text" id="path" name="path" value="%s" size="15" /></label>
-</span>
-<input type="submit" value="Go" accesskey="G" />
-</p>
-</form>
-EOF
-  }
-
-  if ($allow_tar && $filesfound) {
-    my ($basefile) = ($where =~ m,(?:.*/)?([^/]+),);
-    my $havetar = $CMD{tar} && $CMD{gzip};
-    my $havezip = $CMD{zip};
-    if (defined($basefile) && $basefile ne '' && ($havetar || $havezip)) {
-      my $q = ($query ? "$query;" : '?') . 'tarball=1';
-      print "<hr />\n",
-        '<div style="text-align: center">Download this directory in ';
-      # Mangle the filename so browsers show a reasonable filename to download.
-      my @types = ();
-      $basefile = uri_escape($basefile);
-      push(@types, &link('tarball', "$basefile.tar.gz$q")) if $havetar;
-      push(@types, &link('zip archive', "$basefile.zip$q")) if $havezip;
-      print join(' or ', @types), "</div>\n";
-    }
-  }
-
-  if ($edit_option_form || defined($input{options})) {
-
-    print <<EOF;
-<form method="get" action="./">
-<fieldset>
-<legend>General options</legend>
-<input type="hidden" name="copt" value="1" />
-EOF
-    for my $v qw(hidecvsroot hidenonreadable) {
-      printf(qq{<input type="hidden" name="%s" value="%s" />\n},
-             $v, $input{$v} || 0);
-    }
-    if ($cvstree ne $cvstreedefault) {
-      print "<input type=\"hidden\" name=\"cvsroot\" value=\"$cvstree\" />\n";
-    }
-    print <<EOF;
-<table summary="General options">
-<tr>
-<td class="opt-label">
-<label for="sortby" accesskey="F">Sort files by:</label>
-</td>
-<td class="opt-value">
-<select id="sortby" name="sortby">
-<option value="">File</option>
-EOF
-    print "<option", $bydate ? ' selected="selected"' : '',
-      " value=\"date\">Age</option>\n";
-    print "<option", $byauthor ? ' selected="selected"' : '',
-      " value=\"author\">Author</option>\n"
-        if $show_author;
-    print "<option", $byrev ? ' selected="selected"' : '',
-      " value=\"rev\">Revision</option>\n";
-    print "<option", $bylog ? ' selected="selected"' : '',
-      " value=\"log\">Log message</option>\n";
-    print <<EOF;
-</select>,
-<label for="ignorecase" accesskey="I">case-insensitive:
-EOF
-    print '<input id="ignorecase" name="ignorecase" type="checkbox"',
-      $input{ignorecase} ? ' checked="checked"' : '',
-        " value=\"1\" /></label>\n";
-    print <<EOF;
-</td>
-<td class="opt-label">
-<label for="hideattic" accesskey="A">Hide files in Attic:</label>
-</td>
-<td class="opt-value">
-EOF
-    print '<input id="hideattic" name="hideattic" type="checkbox"',
-      $input{hideattic} ? ' checked="checked"' : '', ' value="1" />';
-    print <<EOF;
-</td>
-</tr>
-<tr>
-<td class="opt-label">
-<label for="logsort" accesskey="L">Sort log by:</label>
-</td>
-<td class="opt-value">
-EOF
-    printLogSortSelect(0);
-    print <<EOF;
-</td>
-<td class="opt-label">
-<label for="ln" accesskey="N">Show line numbers:</label>
-</td>
-<td class="opt-value">
-EOF
-    print '<input id="ln" name="ln" type="checkbox"',
-      $input{ln} ? ' checked="checked"' : '', " value=\"1\" />\n";
-    print <<EOF;
-</td>
-</tr>
-<tr>
-<td class="opt-label">
-<label for="f" accesskey="D">Diff format:</label>
-</td>
-<td>
-EOF
-    printDiffSelect(0);
-    print <<EOF;
-</td>
-<td colspan="2" class="opt-label">
-<input type="submit" value="Change Options" accesskey="C" />
-</td>
-</tr>
-</table>
-</fieldset>
-</form>
-EOF
-  }
-  html_footer();
-}
-
-###############################
-# View Files
-###############################
-elsif (-f $fullname . ',v') {
-
-  if (defined($input{rev}) || $doCheckout) {
-    &doCheckout($fullname, $input{rev}, $input{only_with_tag});
-    gzipclose();
-    exit;
-  }
-
-  if (defined($input{annotate}) && $allow_annotate) {
-    &doAnnotate($input{annotate}, $input{only_with_tag});
-    gzipclose();
-    exit;
-  }
-
-  if (defined($input{r1}) && defined($input{r2})) {
-    &doDiff($fullname,  $input{r1},  $input{tr1},
-            $input{r2}, $input{tr2}, $input{f});
-    gzipclose();
-    exit;
-  }
-
-  if ($allow_cvsgraph && $input{graph}) {
-    if ($input{makeimage}) {
-      doGraph();
-    } else {
-      doGraphView();
-    }
-    gzipclose();
-    exit;
-  }
-
-  &doLog($fullname);
-}
-
-##############################
-# View Diff
-##############################
-elsif ($fullname =~ s/\.diff$//
-       && -f $fullname . ',v' && $input{r1} && $input{r2})
-{
-
-  # $where-diff-removal if 'cvs rdiff' is used
-  # .. but 'cvs rdiff'doesn't support some options
-  # rcsdiff does (-w and -p), so it is disabled
-  # $where =~ s/\.diff$//;
-
-  # Allow diffs using the ".diff" extension so that browsers that default
-  # to the filename in the URL when saving don't save diffs as eg. foo.c.
-  &doDiff($fullname,  $input{r1},  $input{tr1},
-          $input{r2}, $input{tr2}, $input{f});
-  gzipclose();
-  exit;
-
-}
-
-elsif (do { (my $tmp = $fullname) =~ s|/([^/]+)$|/Attic/$1|; -f "$tmp,v" }) {
-  # The file has been removed and is in the Attic.
-  # Send a redirect pointing to the file in the Attic.
-  (my $newplace = $scriptwhere) =~ s|/([^/]+)$|/Attic/$1|;
-  if ($ENV{QUERY_STRING} ne "") {
-    redirect("$newplace?$ENV{QUERY_STRING}");
-  } else {
-    redirect($newplace);
-  }
-  exit;
-
-}
-
-elsif (0 && (my @files = &safeglob($fullname . ",v"))) {
-  http_header("text/plain");
-  print "You matched the following files:\n";
-  print join ("\n", @files);
-
-  # TODO:
-  # Find the tags from each file
-  # Display a form offering diffs between said tags
-}
-
-else {
-  # Assume it's a module name with a potential path following it.
-  my $module;
-  my $xtra = (($module = $where) =~ s|(/.*)||) ? $1 : '';
-
-  # Is there an indexed version of modules?
-  my $fh = do { local (*FH); };
-  if (open($fh, catfile($cvsroot, 'CVSROOT', 'modules'))) {
-    while (<$fh>) {
-      if (/^(\S+)\s+(\S+)/o
-          && $module eq $1
-          && $module ne $2
-          && -d "$cvsroot/$2")
-      {
-        close($fh);
-        redirect("$scriptname/$2$xtra$query");
-      }
-    }
-    close($fh);
-  }
-  fatal("404 Not Found", '%s: no such file or directory', $where);
-}
-
-gzipclose();
-
-## End MAIN
-
-
-sub printDiffSelect($)
-{
-  my ($use_java_script) = @_;
-
-  print '<select id="f" name="f"';
-  print ' onchange="this.form.submit()"' if $use_java_script;
-  print ">\n";
-
-  for my $difftype (@DIFFTYPES) {
-    printf("<option value=\"%s\"%s>%s</option>\n",
-           $difftype, $input{f} eq $difftype ? ' selected="selected"' : '',
-           "\u$DIFFTYPES{$difftype}{descr}");
-  }
-
-  print "</select>";
-}
-
-
-sub printDiffSelectStickyVars()
-{
-  while (my ($key, $val) = each %input) {
-    next if ($key eq 'f');
-    next if (defined($DEFAULTVALUE{$key}) && $DEFAULTVALUE{$key} eq $val);
-    print "<input type=\"hidden\" name=\"", htmlquote($key), "\" value=\"",
-      htmlquote($val), "\" />\n";
-  }
-}
-
-
-sub printLogSortSelect($)
-{
-  my ($use_java_script) = @_;
-
-  print '<select id="logsort" name="logsort"';
-  print ' onchange="this.form.submit()"' if $use_java_script;
-  print ">\n";
-
-  for my $sortkey (@LOGSORTKEYS) {
-    printf("<option value=\"%s\"%s>%s</option>\n",
-           $sortkey, $logsort eq $sortkey ? ' selected="selected"' : '',
-           "\u$LOGSORTKEYS{$sortkey}{descr}");
-  }
-
-  print "</select>";
-}
-
-
+# each log entry is of the form:
+# ----------------------------
+# revision 3.7.1.1
+# date: 1995/11/29 22:15:52;  author: fenner;  state: Exp;  lines: +5 -3
+# log info
+# ----------------------------
+	logentry:
+	while (!/^=========/) {
+	    $_ = <RCS>;
+	    print "R:", $_ if ($verbose);
+	    if (/^revision ([\d\.]+)/) {
+		$rev = $1;
+	    } elsif (/^========/ || /^----------------------------$/) {
+		next logentry;
+	    } else {
+		&fatal("500 Internal Error","Error parsing RCS output: $_");
+	    }
+	    $_ = <RCS>;
+	    print "D:", $_ if ($verbose);
+	    if (m|^date:\s+(\d+)/(\d+)/(\d+)\s+(\d+):(\d+):(\d+);\s+author:\s+(\S+);\s+state:\s+(\S+);|) {
+		$yr = $1;
+		# damn 2-digit year routines
+		if ($yr > 100) {
+		    $yr -= 1900;
+		}
+		$date{$rev} = &timelocal($6,$5,$4,$3,$2 - 1,$yr);
+		$author{$rev} = $7;
+		$state{$rev} = $8;
+	    } else {
+		&fatal("500 Internal Error", "Error parsing RCS output: $_");
+	    }
+	    line:
+	    while (<RCS>) {
+		print "L:", $_ if ($verbose);
+		next line if (/^branches:\s/);
+		last line if (/^----------------------------$/ || /^=========/);
+		$log{$rev} .= $_;
+	    }
+	    print "E:", $_ if ($verbose);
+	}
+	close(RCS);
+	print "Done reading RCS file\n" if ($verbose);
 #
-# Find the last modified, version controlled files in the given directories.
-# Compares solely based on modification timestamps.  Files in the returned list
-# are without the ,v suffix, and unreadable files have been filtered out.
+# Sort the revisions into commit-date order.
+	@revorder = sort {$date{$b} <=> $date{$a}} keys %date;
+	print "Done sorting revisions\n" if ($verbose);
 #
-sub findLastModifiedSubdirs(@)
-{
-  my (@dirs) = @_;
-
-  my @files;
-  foreach my $dirname (@dirs) {
-    next if ($dirname eq curdir() || $dirname eq updir());
-    my $dir = catdir($fullname, $dirname);
-    next if (!-d $dir);
-
-    my $dh = do { local (*DH); };
-    opendir($dh, $dir) or next;
-    my (@filenames) = grep(!forbidden(catfile($dir, $_)), readdir($dh));
-    closedir($dh);
-
-    my $lastmod     = undef;
-    my $lastmodtime = undef;
-    foreach my $filename (@filenames) {
-      ($filename) =
-        (catfile($dirname, $filename) =~ VALID_PATH) or next; # untaint
-      my ($file) = catfile($fullname, $filename);
-      next if ($filename !~ /,v$/o || !-f $file || !-r _);
-      my $modtime = -M _;
-      if (!defined($lastmod) || $modtime < $lastmodtime) {
-        ($lastmod    = $filename) =~ s/,v$//;
-        $lastmodtime = $modtime;
-      }
-    }
-    push(@files, $lastmod) if (defined($lastmod));
-  }
-  return @files;
-}
-
-
-sub htmlify_sub(&$)
-{
-  (my $proc, local $_) = @_;
-  my @a = split(m|(<a [^>]+>[^<]*</a>)|i);
-  my $linked;
-  my $result = '';
-
-  while (($_, $linked) = splice(@a, 0, 2)) {
-    &$proc();
-    $result .= $_      if defined($_);
-    $result .= $linked if defined($linked);
-  }
-
-  return $result;
-}
-
-
-sub htmlify($;$)
-{
-  (local $_, my $extra) = @_;
-
-  $_ = htmlquote($_);
-
-  # get URL's as link
-  s{
-    ((https?|ftp)://.+?)([\s\']|&(quot|[lg]t);)
-   }{
-     &link($1, htmlunquote($1)) . $3
-   }egx;
-
-  if ($allow_mailtos) {
-    # Make mailto: links from email addresses.
-    $_ = htmlify_sub {
-      s<
-        ([\w+=\-.!]+@[\w\-]+(?:\.[\w\-]+)+)
-       ><
-         &link($1, "mailto:$1")
-       >egix;
-    } $_;
-  }
-
-  if ($extra) {
-
-    # get PR #'s as link: "PR#nnnn" "PR: nnnn, ..." "PR nnnn, ..." "bin/nnnn"
-    if (defined($prcgi) && defined($re_prkeyword)) {
-      my $prev;
-
-      do {
-        $prev = $_;
-
-        $_ = htmlify_sub {
-          s{
-            (\b$re_prkeyword[:\#]?\s*
-             (?:
-              \#?
-              \d+[,\s]\s*
-             )*
-             \#?)
-            (\d+)\b
-           }{
-             $1 . &link($2, sprintf($prcgi, $2))
-           }egix;
-        } $_;
-      } while ($_ ne $prev);
-
-      if (defined($re_prcategories)) {
-        $_ = htmlify_sub {
-          s{
-            (\b$re_prcategories/(\d+)\b)
-           }{
-             &link($1, sprintf($prcgi, $2))
-           }egox;
-        } $_;
-      }
-    }
-
-    # get manpage specs as link: "foo.1" "foo(1)"
-    if (defined($mancgi)) {
-      $_ = htmlify_sub {
-        s{
-          (
-           \b ( \w[\w+\-.]* (?: ::\w[\w+\-.]*)* )
-           (?:
-            \( ([0-9n]) \) \B
-            |
-            \. ([0-9n]) \b
-           )
-          )
-         }{
-            my($text, $name, $section) = ($1, $2, defined($3) ? $3 : $4);
-            ($name =~ /[A-Za-z]/ && $name !~ /\.(:|$)/)
-             ? &link($text, sprintf($mancgi, $section, uri_escape($name)))
-              : $text;
-         }egx;
-      } $_;
-    }
-  }
-
-  return $_;
-}
-
-
-sub spacedHtmlText($;$)
-{
-  (local $_, my $ts) = @_;
-  return '' unless defined($_);
-  $ts ||= $tabstop || 8;
-
-  # Expand tabs
-  1 while s/(.*?)(\t+)/$1 . ' ' x (length($2) * $ts - length($1) % $ts)/e;
-
-  if ($hr_breakable) {
-    s/^ /\001nbsp;/;      # protect leading and...
-    s/ $/\001nbsp;/;      # ...trailing whitespace (mostly for String::Ediff),
-    s/  / \001nbsp;/g;    # ...and leave every other space 'breakable'
-  } else {
-    s/ /\001nbsp;/g;
-  }
-
-  $_ = htmlify($_, $allow_source_extra);
-
-  # unescape
-  y/\001/&/;
-
-  return $_;
-}
-
-
-# Note that this doesn't htmlquote the first argument...
-sub link($$)
-{
-  my ($name, $url) = @_;
-  return sprintf('<a href="%s">%s</a>', htmlquote($url), $name);
-}
-
-
-sub revcmp($$)
-{
-  my ($rev1, $rev2) = @_;
-
-  # make no comparison for a tag or a branch
-  return 0 if $rev1 =~ /[^\d.]/ || $rev2 =~ /[^\d.]/;
-
-  my (@r1) = split(/\./, $rev1);
-  my (@r2) = split(/\./, $rev2);
-  my ($a, $b);
-
-  while (($a = shift(@r1)) && ($b = shift(@r2))) {
-    return $a <=> $b unless ($a == $b);
-  }
-  if (@r1) { return  1; }
-  if (@r2) { return -1; }
-  return 0;
-}
-
-
+# HEAD is an artificial tag which is simply the highest tag number on the main
+# branch, unless there is a branch tag in the RCS file in which case it's the
+# highest revision on that branch.  Find it by looking through @revorder; it
+# is the first commit listed on the appropriate branch.
+	$headrev = $curbranch || "1";
+	revision:
+	for ($i = 0; $i <= $#revorder; $i++) {
+	    if ($revorder[$i] =~ /^(\S*)\.\d+$/ && $headrev eq $1) {
+		if ($revsym{$revorder[$i]}) {
+		    $revsym{$revorder[$i]} .= ", ";
+		}
+		$revsym{$revorder[$i]} .= "HEAD";
+		$symrev{"HEAD"} = $revorder[$i];
+		last revision;
+	    }
+	}
+	print "Done finding HEAD\n" if ($verbose);
 #
-# Signal a fatal error.
+# Now that we know all of the revision numbers, we can associate
+# absolute revision numbers with all of the symbolic names, and
+# pass them to the form so that the same association doesn't have
+# to be built then.
 #
-sub fatal($$@)
-{
-  my ($errcode, $format, @args) = @_;
-  print "Status: $errcode\r\n";
-  html_header('Error');
-  print '<div id="error">Error: ',
-    sprintf($format, map(htmlquote($_), @args)), "</div>\n";
-  html_footer();
-  exit(1);
-}
+# should make this a case-insensitive sort
+	foreach (sort keys %symrev) {
+	    $rev = $symrev{$_};
+	    if ($rev =~ /^(\d+(\.\d+)+)\.0\.(\d+)$/) {
+		push(@branchnames, $_);
+		#
+		# A revision number of A.B.0.D really translates into
+		# "the highest current revision on branch A.B.D".
+		#
+		# If there is no branch A.B.D, then it translates into
+		# the head A.B .
+		#
+		$head = $1;
+		$branch = $3;
+		$regex = $head . "." . $branch;
+		$regex =~ s/\./\./g;
+		#             <
+		#           \____/
+		$rev = $head;
 
+		revision:
+		foreach $r (@revorder) {
+		    if ($r =~ /^${regex}/) {
+			$rev = $head . "." . $branch;
+			last revision;
+		    }
+		}
+		$revsym{$rev} .= ", " if ($revsym{$rev});
+		$revsym{$rev} .= $_;
+		if ($rev ne $head) {
+		    $branchpoint{$head} .= ", " if ($branchpoint{$head});
+		    $branchpoint{$head} .= $_;
+		}
+	    }
+	    $sel .= "<OPTION VALUE=\"${rev}:${_}\">$_\n";
+	}
+	print "Done associating revisions with branches\n" if ($verbose);
+        print &html_header("CVS log for $where");
+	($upwhere = $where) =~ s|(Attic/)?[^/]+$||;
+	print "Up to ", &link($upwhere,$scriptname . "/" . $upwhere . $query);
+	print "<BR>\n";
+	print "<A HREF=\"#diff\">Request diff between arbitrary revisions</A>\n";
+	print "<HR NOSHADE>\n";
+	if ($curbranch) {
+	    print "Default branch is ";
+	    print ($revsym{$curbranch} || $curbranch);
+	} else {
+	    print "No default branch";
+	}
+	print "<BR><HR NOSHADE>\n";
+# The other possible U.I. I can see is to have each revision be hot
+# and have the first one you click do ?r1=foo
+# and since there's no r2 it keeps going & the next one you click
+# adds ?r2=foo and performs the query.
+# I suppose there's no reason we can't try both and see which one
+# people prefer...
 
-#
-# Signal a (fatal) configuration error.
-#
-sub config_error($$)
-{
-  fatal('500 Internal Error',
-        'Error loading configuration file "<code>%s</code>":<br /><br />' .
-        '%s<br />', @_);
+	for ($i = 0; $i <= $#revorder; $i++) {
+	    $_ = $revorder[$i];
+	    ($br = $_) =~ s/\.\d+$//;
+	    next if ($onlyonbranch && $br ne $onlyonbranch &&
+					    $_ ne $onlybranchpoint);
+	    print "<a NAME=\"rev$_\"></a>";
+	    foreach $sym (split(", ", $revsym{$_})) {
+		print "<a NAME=\"$sym\"></a>";
+	    }
+	    if ($revsym{$br} && !$nameprinted{$br}) {
+		foreach $sym (split(", ", $revsym{$br})) {
+		    print "<a NAME=\"$sym\"></a>";
+		}
+		$nameprinted{$br}++;
+	    }
+	    print "\n";
+	    print "<A HREF=\"$scriptwhere?rev=$_\"><b>$_</b></A>";
+	    if (/^1\.1\.1\.\d+$/) {
+		print " <i>(vendor branch)</i>";
+	    }
+	    print " <i>" . &ctime($date{$_}) . "</i> by ";
+	    print "<i>" . $author{$_} . "</i>\n";
+	    if ($revsym{$_}) {
+		print "<BR>CVS Tags: <b>$revsym{$_}</b>";
+	    }
+	    if ($revsym{$br})  {
+		if ($revsym{$_}) {
+		    print "; ";
+		} else {
+		    print "<BR>";
+		}
+		print "Branch: <b>$revsym{$br}</b>\n";
+	    }
+	    if ($branchpoint{$_}) {
+		if ($revsym{$br} || $revsym{$_}) {
+		    print "; ";
+		} else {
+		    print "<BR>";
+		}
+		print "Branch point for: <b>$branchpoint{$_}</b>\n";
+	    }
+	    # Find the previous revision on this branch.
+	    @prevrev = split(/\./, $_);
+	    if (--$prevrev[$#prevrev] == 0) {
+		# If it was X.Y.Z.1, just make it X.Y
+		if ($#prevrev > 1) {
+		    pop(@prevrev);
+		    pop(@prevrev);
+		} else {
+		    # It was rev 1.1 (XXX does CVS use revisions
+		    # greater than 1.x?)
+		    if ($prevrev[0] != 1) {
+			print "<i>* I can't figure out the previous revision! *</i>\n";
+		    }
+		}
+	    }
+	    if ($prevrev[$#prevrev] != 0) {
+		$prev = join(".", @prevrev);
+		print "<BR><A HREF=\"${scriptwhere}.diff?r1=$prev";
+		print "&r2=$_\">Diffs to $prev</A>\n";
+		#
+		# Plus, if it's on a branch, and it's not a vendor branch,
+		# offer to diff with the immediately-preceding commit if it
+		# is not the previous revision as calculated above
+		# and if it is on the HEAD (or at least on a higher branch)
+		# (e.g. change gets committed and then brought
+		# over to -stable)
+		if (!/^1\.1\.1\.\d+$/ && ($i != $#revorder) &&
+					($prev ne $revorder[$i+1])) {
+		    @tmp1 = split(/\./, $revorder[$i+1]);
+		    @tmp2 = split(/\./, $_);
+		    if ($#tmp1 < $#tmp2) {
+			print "; <A HREF=\"${scriptwhere}.diff?r1=$revorder[$i+1]";
+			print "&r2=$_\">Diffs to $revorder[$i+1]</A>\n";
+		    }
+		}
+	    }
+	    if ($state{$_} eq "dead") {
+		print "<BR><B><I>FILE REMOVED</I></B>\n";
+	    }
+	    print "<PRE>\n";
+	    print &htmlify($log{$_}, 1);
+	    print "</PRE><HR NOSHADE>\n";
+	}
+	print "<A NAME=diff>\n";
+	print "This form allows you to request diff's between any two\n";
+	print "revisions of a file.  You may select a symbolic revision\n";
+	print "name using the selection box or you may type in a numeric\n";
+	print "name using the type-in text box.\n";
+	print "</A><P>\n";
+	print "<FORM METHOD=\"GET\" ACTION=\"${scriptwhere}.diff\">\n";
+	print "Diffs between \n";
+	print "<SELECT NAME=\"r1\">\n";
+	print "<OPTION VALUE=\"text\" SELECTED>Use Text Field\n";
+	print $sel;
+	print "</SELECT>\n";
+	print "<INPUT TYPE=\"TEXT\" NAME=\"tr1\" VALUE=\"$revorder[$#revorder]\">\n";
+	print " and \n";
+	print "<SELECT NAME=\"r2\">\n";
+	print "<OPTION VALUE=\"text\" SELECTED>Use Text Field\n";
+	print $sel;
+	print "</SELECT>\n";
+	print "<INPUT TYPE=\"TEXT\" NAME=\"tr2\" VALUE=\"$revorder[0]\">\n";
+	print "<BR><INPUT TYPE=RADIO NAME=\"f\" VALUE=u CHECKED>Unidiff<br>\n";
+	print "<INPUT TYPE=RADIO NAME=\"f\" VALUE=c>Context diff<br>\n";
+	print "<INPUT TYPE=RADIO NAME=\"f\" VALUE=s>Side-by-Side<br>\n";
+	print "<INPUT TYPE=SUBMIT VALUE=\"Get Diffs\">\n";
+	print "</FORM>\n";
+	print "<HR noshade>\n";
+	print "<A name=branch>\n";
+	print "You may select to see revision information from only\n";
+	print "a single branch.\n";
+	print "</A><P>\n";
+	print "<FORM METHOD=\"GET\" ACTION=\"$scriptwhere\">\n";
+	print "Branch: \n";
+	print "<SELECT NAME=\"only_on_branch\">\n";
+	print "<OPTION VALUE=\"\"";
+	print " SELECTED" if ($input{"only_on_branch"} eq "");
+	print ">Show all branches\n";
+	foreach (sort @branchnames) {
+		print "<OPTION";
+		print " SELECTED" if ($input{"only_on_branch"} eq $_);
+		print ">${_}\n";
+	}
+	print "</SELECT>\n";
+	print "<INPUT TYPE=SUBMIT VALUE=\"View Branch\">\n";
+	print "</FORM>\n";
+        print &html_footer;
+	print "</BODY></HTML>\n";
+} elsif ($fullname =~ s/\.diff$// && -f $fullname . ",v" &&
+				$input{'r1'} && $input{'r2'}) {
+	# Allow diffs using the ".diff" extension
+	# so that browsers that default to the URL
+	# for a save filename don't save diff's as
+	# e.g. foo.c
+	&dodiff($fullname, $input{'r1'}, $input{'tr1'},
+		$input{'r2'}, $input{'tr2'}, $input{'f'});
+	exit;
+} elsif (($newname = $fullname) =~ s|/([^/]+)$|/Attic/$1| &&
+				 -f $newname . ",v") {
+	# The file has been removed and is in the Attic.
+	# Send a redirect pointing to the file in the Attic.
+	($newplace = $scriptwhere) =~ s|/([^/]+)$|/Attic/$1|;
+	&redirect($newplace);
+	exit;
+} elsif (0 && (@files = &safeglob($fullname . ",v"))) {
+	print "Content-type: text/plain\n\n";
+	print "You matched the following files:\n";
+	print join("\n", @files);
+	# Find the tags from each file
+	# Display a form offering diffs between said tags
+} else {
+	# Assume it's a module name with a potential path following it.
+	($module = $where) =~ s|/.*||;
+	$xtra = $&;
+	# Is there an indexed version of modules?
+	if (open(MODULES, "$cvsroot/CVSROOT/modules")) {
+		while (<MODULES>) {
+			if (/^(\S+)\s+(\S+)/o && $module eq $1
+				&& -d "${cvsroot}/$2" && $module ne $2) {
+				&redirect($scriptname . '/' . $2 . $xtra);
+			}
+		}
+	}
+	&fatal("404 Not Found","$where: no such file or directory");
 }
 
+sub htmlify {
+	local($string, $pr) = @_;
 
-#
-# Sends a redirect to the given URL.
-#
-sub redirect($;$)
-{
-  my ($url, $permanent) = @_;
-  my ($status, $text);
-  if ($permanent) {
-    $status = '301';
-    $text   = 'Moved Permanently';
-  } else {
-    $status = '302';
-    $text   = 'Found';
-  }
-  print "Status: $status $text\r\n", "Location: $url\r\n";
-  html_header($text);
-  print "<p>This document has moved ", &link('here', $url), ".</p>\n";
-  html_footer();
-  exit(1);
-}
+	$string =~ s/&/&amp;/g;
+	$string =~ s/</&lt;/g;
+	$string =~ s/>/&gt;/g;
 
+	if ($pr) {
+		$string =~ s|\bpr(\W+[a-z]+/\W*)(\d+)|<A HREF=/cgi/query-pr.cgi?pr=$2>$&</A>|ig;
+	}
 
-sub safeglob($)
-{
-  my ($filename) = @_;
-
-  (my $dirname = $filename) =~ s|/[^/]+$||;
-  $filename =~ s|.*/||;
-
-  my @results;
-  my $dh = do { local (*DH); };
-  if (opendir($dh, $dirname)) {
-    my $glob = $filename;
-    my $t;
-
-    #   transform filename from glob to regex.  Deal with:
-    #   [, {, ?, * as glob chars
-    #   make sure to escape all other regex chars
-    $glob =~ s/([\.\(\)\|\+])/\\$1/g;
-    $glob =~ s/\*/.*/g;
-    $glob =~ s/\?/./g;
-    $glob =~ s/{([^}]+)}/($t = $1) =~ s-,-|-g; "($t)"/eg;
-    $glob = qr/^$glob$/;
-
-    foreach (readdir($dh)) {
-      if ($_ =~ $glob && $_ =~ VALID_PATH) {
-        push(@results, catfile($dirname, $1)); # untaint
-      }
-    }
-    closedir($dh);
-  }
-
-  return @results;
+	$string;
 }
 
+sub link {
+	local($name, $where) = @_;
 
-#
-# Searches @command_path for the given executable file.
-#
-sub search_path($)
-{
-  my ($command) = @_;
-  for my $d (@command_path) {
-    my $cmd = catfile($d, $command);
-    return $cmd if (-x $cmd && !-d _);
-  }
-  return '';
+	"<A HREF=\"$where\">$name</A>\n";
 }
 
+sub revcmp {
+	local($rev1, $rev2) = @_;
+	local(@r1) = split(/\./, $rev1);
+	local(@r2) = split(/\./, $rev2);
+	local($a,$b);
 
-#
-# Gets the enscript(1) highlight mode corresponding to the given filename,
-# or undef if unsupported.
-#
-sub getEnscriptHL($)
-{
-  return undef unless $allow_enscript;
-  my ($filename) = @_;
-  while (my ($hl, $regex) = each %enscript_types) {
-    return $hl if ($filename =~ $regex);
-  }
-  return undef;
+	while (($a = shift(@r1)) && ($b = shift(@r2))) {
+	    if ($a != $b) {
+		return $a <=> $b;
+	    }
+	}
+	if (@r1) { return 1; }
+	if (@r2) { return -1; }
+	return 0;
 }
 
-
-#
-# Gets the MIME type for the given file name.
-#
-sub getMimeType($;$)
-{
-  my ($fullname, $binary) = @_;
-  $binary = ($keywordsubstitution && $keywordsubstitution =~ /b/)
-    unless defined($binary);
-
-  (my $suffix = $fullname) =~ s/^.*\.([^.]*)$/$1/;
-
-  my $mimetype = $MTYPES{$suffix};
-  $mimetype  ||= $MimeTypes->mimeTypeOf($fullname) if defined($MimeTypes);
-
-  if (!$mimetype && $suffix ne '*' && -f $mime_types && -r _) {
-    my $fh = do { local (*FH); };
-    if (open($fh, $mime_types)) {
-      my $re = sprintf('^\s*(\S+\/\S+)\s.+\b%s\b', quotemeta($suffix));
-      $re = qr/$re/;
-      while (my $line = <$fh>) {
-        if ($line =~ $re) {
-          $mimetype = $1;
-          $MTYPES{$suffix} = $mimetype;
-          last;
-        }
-      }
-      close($fh);
-    } else {
-      warn("Can't open MIME types file $mime_types for reading: $!");
-    }
-  }
-
-  $mimetype ||= $MTYPES{'*'};
-  $mimetype ||= $binary ? 'application/octet-stream' : 'text/plain';
-  return $mimetype;
+sub fatal {
+	local($errcode, $errmsg) = @_;
+	print "Status: $errcode\n";
+	print &html_header("Error");
+#	print "Content-type: text/html\n";
+#	print "\n";
+#	print "<HTML><HEAD><TITLE>Error</TITLE></HEAD>\n";
+#	print "<BODY>Error: $errmsg</BODY></HTML>\n";
+	print "Error: $errmsg\n";
+	print &html_footer;
+	exit(1);
 }
 
-
-###############################
-# read first lines like head(1)
-###############################
-sub head($;$)
-{
-  my ($fh, $linecount) = @_;
-  $linecount ||= 10;
-
-  my @buf;
-  if ($linecount > 0) {
-    for (my $i = 0; !eof($fh) && $i < $linecount; $i++) {
-      push @buf, scalar <$fh>;
-    }
-  } else {
-    @buf = <$fh>;
-  }
-  return @buf;
+sub redirect {
+	local($url) = @_;
+	print "Status: 301 Moved\n";
+	print "Location: $url\n";
+	print &html_header("Moved");
+#	print "Content-type: text/html\n";
+#	print "\n";
+#	print "<HTML><HEAD><TITLE>Moved</TITLE></HEAD>\n";
+#	print "<BODY>This document is located <A HREF=$url>here</A>.</BODY></HTML>\n";
+	print "This document is located <A HREF=$url>here</A>.\n";
+	print &html_footer;
+	exit(1);
 }
 
+sub safeglob {
+	local($filename) = @_;
+	local($dirname);
+	local(@results);
 
-###############################
-# scan vim and Emacs directives
-###############################
-sub scan_directives(@)
-{
-  my $ts = undef;
+	($dirname = $filename) =~ s|/[^/]+$||;
+	$filename =~ s|.*/||;
 
-  for (@_) {
-    $ts = $1 if /\b(?:ts|tabstop|tab-width)[:=]\s*([1-9]\d*)\b/;
-  }
+	if (opendir(DIR, $dirname)) {
+		$glob = $filename;
+	#	transform filename from glob to regex.  Deal with:
+	#	[, {, ?, * as glob chars
+	#	make sure to escape all other regex chars
+		$glob =~ s/([\.\(\)\|\+])/\\$1/g;
+		$glob =~ s/\*/.*/g;
+		$glob =~ s/\?/./g;
+		$glob =~ s/{([^}]+)}/($t = $1) =~ s-,-|-g; "($t)"/eg;
+		foreach (readdir(DIR)) {
+			if (/^${glob}$/) {
+				push(@results, $dirname . "/" .$_);
+			}
+		}
+	}
 
-  ('tabstop' => $ts);
+	@results;
 }
 
+sub checkout {
+	local($fullname, $rev) = @_;
 
-sub openOutputFilter()
-{
-  return unless $output_filter;
-
-  open(STDOUT, "|-") and return;
-
-  # child of child
-  open(STDERR, '>', devnull()) unless $DEBUG;
-  exec($output_filter) or exit -1;
+	open(RCS, "co -p$rev '$fullname' 2>&1 |") ||
+	    &fail("500 Internal Error", "Couldn't co: $!");
+# /home/ncvs/src/sys/netinet/igmp.c,v  -->  standard output
+# or
+# /home/ncvs/src/sys/netinet/igmp.c,v  -->  stdout
+# revision 1.1.1.2
+# /*
+	$_ = <RCS>;
+	if (/^(\S+),v\s+-->\s+st(andar)?d ?out(put)?\s*$/o && $1 eq $fullname) {
+	    # As expected
+	} else {
+	    &fatal("500 Internal Error",
+		"Unexpected output from co: $_");
+	}
+	$_ = <RCS>;
+	if (/^revision\s+$rev\s*$/) {
+	    # As expected
+	} else {
+	    &fatal("500 Internal Error",
+		"Unexpected output from co: $_");
+	}
+	$| = 1;
+	print "Content-type: text/plain\n\n";
+	print <RCS>;
+	close(RCS);
 }
 
+sub dodiff {
+	local($fullname, $r1, $tr1, $r2, $tr2, $f) = @_;
 
-###############################
-# show Annotation
-###############################
-sub doAnnotate($$)
-{
-  my ($rev, $tag) = @_;
-  $rev = $tag || 'HEAD' if ($rev eq '.');
-  (my $pathname = $where) =~ s|((?<=/)Attic/)?[^/]*$||;
-  (my $filename = $where) =~ s|^.*/||;
-
-  # This annotate version is based on the cvs annotate-demo Perl script by
-  # Cyclic Software.  It was written by Cyclic Software,
-  # http://www.cyclic.com/, and is in the public domain.
-  # We could abandon the use of rlog, rcsdiff and co using
-  # the cvs server in a similiar way one day (..after rewrite).
-
-  local (*CVS_IN, *CVS_OUT);
-  my $annotate_err;
-  my ($h, $err) =
-    startproc([ $CMD{cvs}, @annotate_options, 'server' ],
-              '<pipe', \*CVS_IN, '>pipe', \*CVS_OUT,
-              '2>', \$annotate_err);
-  fatal('500 Internal Error',
-        'Annotate failure (exit status %s), output: <pre>%s</pre>',
-        $? >> 8 || -1, $err)
-    unless $h;
-
-  # OK, first send the request to the server.  A simplified example is:
-  #     Root /home/kingdon/zwork/cvsroot
-  #     Argument foo/xx
-  #     Directory foo
-  #     /home/kingdon/zwork/cvsroot/foo
-  #     Directory .
-  #     /home/kingdon/zwork/cvsroot
-  #     annotate
-  # although as you can see there are a few more details.
-
-  print CVS_IN "Root $cvsroot\n";
-  print CVS_IN
-    "Valid-responses ok error Valid-requests Checked-in Updated Merged Removed M E\n";
-
-  # Don't worry about sending valid-requests, the server just needs to
-  # support "annotate" and if it doesn't, there isn't anything to be done.
-  print CVS_IN "UseUnchanged\n";
-  print CVS_IN "Argument -r\n";
-  print CVS_IN "Argument $rev\n";
-  print CVS_IN "Argument $where\n";
-
-  # The protocol requires us to fully fake a working directory (at
-  # least to the point of including the directories down to the one
-  # containing the file in question).
-  # So if $where is "dir/sdir/file", then dirs will be ("dir","sdir","file")
-  my $path = '';
-  foreach my $dir (split('/', $where)) {
-
-    if ($path eq "") {
-      # In our example, $dir is "dir".
-      $path = $dir;
-    } else {
-      print CVS_IN "Directory $path\n";
-      print CVS_IN "$cvsroot/$path\n";
-
-      # In our example, $_ is "sdir" and $path becomes "dir/sdir"
-      # And the next time, "file" and "dir/sdir/file" (which then gets
-      # ignored, because we don't need to send Directory for the file).
-      $path .= "/$dir";
-    }
-  }
-  undef $path;
-
-  # And the last "Directory" before "annotate" is the top level.
-  print CVS_IN "Directory .\n";
-  print CVS_IN "$cvsroot\n";
-
-  print CVS_IN "annotate\n";
-
-  # OK, we've sent our command to the server.  Thing to do is to
-  # close the writer side and get all the responses.
-  if (!close(CVS_IN)) {
-    $h->finish();
-    fatal('500 Internal Error',
-          'Annotate failure (exit status %s): <code>%s</code>, output: ' .
-          '<pre>%s</pre>', $? >> 8, $!, $annotate_err);
-  }
-
-  navigateHeader($scriptwhere, $pathname, $filename, $rev, 'annotate');
-
-  my $revtype = ($rev =~ /\./) ? 'revision' : 'tag'; # TODO: tag -> branch/tag?
-  print '<h3 style="text-align: center">Annotation of ',
-    htmlquote("$pathname$filename"), ", $revtype $rev</h3>\n";
-
-  # Ready to get the responses from the server.
-  # For example:
-  #     E Annotations for foo/xx
-  #     E ***************
-  #     M 1.3          (kingdon  06-Sep-97): hello
-  #     ok
-  my ($lineNr) = 0;
-  my ($oldLrev, $oldLusr) = ("", "");
-  my ($revprint, $usrprint);
-
-  if ($annTable) {
-    print <<EOF;
-<table style="border: none" cellspacing="0" cellpadding="0" summary="Annotation">
-EOF
-  } else {
-    print "<pre>";
-  }
-
-  # prefetch several lines
-  my @buf = head(*CVS_OUT);
-
-  my %d = scan_directives(@buf);
-
-  while (@buf || !eof(*CVS_OUT)) {
-
-    $_ = @buf ? shift @buf : <CVS_OUT>;
-    my @words = split;
-
-    # Adding one is for the (single) space which follows $words[0].
-    my $rest = substr($_, length($words[0]) + 1);
-    if ($words[0] eq "E") {
-      next;
-    } elsif ($words[0] eq "M") {
-      $lineNr++;
-      (my $lrev = substr($_, 2,  13)) =~ y/ //d;
-      (my $lusr = substr($_, 16, 9))  =~ y/ //d;
-      my $line = substr($_, 36);
-      # TODO: this does not work for branch/tag revisions.
-      my $isCurrentRev = ($rev eq $lrev);
-
-      # we should parse the date here ..
-      if ($lrev eq $oldLrev) {
-        $revprint = sprintf('%-8s', '');
-      } else {
-        $revprint = sprintf('%-8s', $lrev);
-        $revprint =~ s|(\S+)|&link($1, uri_escape($filename)."$query#rev$1")|e;
-        $oldLusr = '';
-      }
-
-      $usrprint = ($lusr eq $oldLusr) ? '' : $lusr;
-      $oldLrev = $lrev;
-      $oldLusr = $lusr;
-
-      print $is_textbased ? '<b>' : '<span class="current-rev">'
-        if $isCurrentRev;
-
-      $usrprint = sprintf('%-8s', $usrprint);
-      printf '%s%s %s %4d:', $revprint, $isCurrentRev ? '!' : ' ',
-        htmlquote($usrprint), $lineNr;
-      print spacedHtmlText($line, $d{tabstop});
-
-      print $is_textbased ? '</b>' : '</span>' if $isCurrentRev;
-
-    } elsif ($words[0] eq "ok") {
-      # We could complain about any text received after this, like the
-      # CVS command line client.  But for simplicity, we don't.
-
-    } elsif ($words[0] eq "error") {
-      fatal("500 Internal Error",
-            'Error occured during annotate: <b>%s</b>', $_);
-    }
-  }
-  $h->finish();
-
-  if ($annTable) {
-    print "</table>";
-  } else {
-    print "</pre>";
-  }
-  html_footer();
-}
-
-###############################
-# make Checkout
-###############################
-sub doCheckout($$$)
-{
-  my ($fullname, $rev, $tag) = @_;
-  $rev = $tag || undef if (!$rev || $rev eq '.');
-
-  # Start resolving whether we will do a markup view or not.
-  my $do_markup = undef;
-  my $want_type = $input{'content-type'};
-
-  # No markup if markup disallowed.
-  $do_markup = 0 unless $allow_markup;
-
-  # No markup if checkout magic cookie in URL.
-  $do_markup = 0 if (!defined($do_markup) && $doCheckout);
-
-  # Do markup if explicitly asked using cvsweb-markup content type.  If the
-  # asked content type is anything else, no markup.
-  if (!defined($do_markup) && $want_type) {
-    if ($want_type =~ CVSWEBMARKUP) {
-      $want_type = undef;
-      $do_markup = 1;
-    } else {
-      $do_markup = 0;
-    }
-  }
-
-  # Ok, if $do_markup is still undefined, we know that a download has not been
-  # explicitly asked.  For the last check further down below we'll need to
-  # know if the file is binary, and possibly run a log on it.
-  my $needlog = $do_markup || $use_moddate;
-
-  my $moddate = undef;
-  my $revopt;
-  if (defined($rev)) {
-    $revopt = "-r$rev";
-    if ($needlog) {
-      readLog($fullname, $rev);
-      $moddate   = $date{$rev};
-      # TODO: even this does not work for branch tags, but only normal tags :(
-      $moddate ||= $date{$symrev{$rev}} if defined($symrev{$rev});
-    }
-  } else {
-    $revopt = "-rHEAD";
-    if ($needlog) {
-      readLog($fullname);
-      $moddate = $date{$symrev{HEAD}};
-    }
-  }
-
-  my $cr = abs_path($cvsroot) || $cvsroot;
-  # abs_path() taints when run as a CGI...
-  if ($cr =~ VALID_PATH) {
-    $cr = $1;
-  } else {
-    fatal('500 Internal Error', 'Illegal CVS root: <code>%s</code>', $cr);
-  }
-  # Use abs_path() to work around a bug of cvs -p; expand symlinks if we can.
-  my @cmd = ($CMD{cvs}, @cvs_options, '-d', $cr, 'co', '-p', $revopt, $where);
-
-  local (*CVS_OUT, *CVS_ERR);
-  my ($h, $err) =
-    startproc(\@cmd, \"", '>pipe', \*CVS_OUT, '2>pipe', \*CVS_ERR);
-  fatal('500 Internal Error',
-        'Checkout failure (exit status %s), output: <pre>%s</pre>',
-        $? >> 8 || -1, $err)
-    unless $h;
-
-  if (eof(CVS_ERR)) {
-    $h->finish();
-    fatal("404 Not Found", '%s is not (any longer) pertinent', $where);
-  }
-
-  #===================================================================
-  #Checking out squid/src/ftp.c
-  #RCS:  /usr/src/CVS/squid/src/ftp.c,v
-  #VERS: 1.1.1.28.6.2
-  #***************
-
-  # Parse CVS header
-  my ($revision, $filename, $cvsheader);
-  $filename = "";
-  while (<CVS_ERR>) {
-    last if (/^\*\*\*\*/);
-    $revision = $1 if (/^VERS: (.*)$/);
-
-    if (/^Checking out (.*)$/) {
-      ($filename = $1) =~ s|^\./+||;
-    }
-    $cvsheader .= $_;
-  }
-  close(CVS_ERR);
-
-  if ($filename ne $where) {
-    $h->finish();
-    fatal("500 Internal Error",
-          'Unexpected output from cvs co: <pre>%s</pre> ' .
-          '(expected "<code>%s</code>" but got "<code>%s</code>")',
-          $cvsheader, $where, $filename);
-  }
-
-  # Last checks whether we'll do markup or not.
-  my $isbin = $keywordsubstitution && $keywordsubstitution =~ /b/;
-  my $mimetype = getMimeType($fullname, $isbin);
-
-  # If we still are not sure whether to do markup or not:
-  # if the MIME type is "viewable" or this is not a binary file, do.
-  $do_markup = !$isbin || viewable($mimetype) unless defined($do_markup);
-
-  if ($do_markup) {
-
-    # If this is something we'll be linking to in the markup view, we are
-    # done with this particular output from "cvs co" and must discard it.
-    my $linked = $mimetype =~ m{^image/|application/pdf$}i;
-    if ($linked) {
-      close(CVS_OUT);
-      $h->finish();
-    }
-
-    # Here we know the last modified date, but don't know if tags have been
-    # added afterwards (those are shown in the markup view): no last-modified.
-    cvswebMarkup(\*CVS_OUT, $fullname, $revision, $isbin, $mimetype, $needlog);
-
-    $h->finish() unless $linked;
-
-  } else {
-    http_header($want_type || $mimetype, $moddate);
-    local $/ = undef;
-    print <CVS_OUT>;
-    $h->finish();
-  }
-}
-
-
-sub cvswebMarkup($$$$$$;$)
-{
-  my ($filehandle, $fullname, $rev, $isbin, $mimetype, $logged, $mod) = @_;
-
-  (my $pathname = $where) =~ s|((?<=/)Attic/)?[^/]*$||;
-  (my $filename = $where) =~ s|^.*/||;
-
-  navigateHeader($scriptwhere, $pathname, $filename, $rev, 'view', $mod);
-
-  print <<EOF;
-<hr />
-<div class="log-markup">
-File:&nbsp;
-EOF
-  print &clickablePath($where, 1), "<br />\n";
-
-  if ($show_log_in_markup) {
-    readLog($fullname) unless $logged; #,$rev);
-    printLog($rev, $mimetype, $isbin);
-  } else {
-    print "Revision: <b>$rev</b><br />\n";
-    print 'Tag: ', htmlquote($input{only_with_tag}), "<br />\n"
-      if $input{only_with_tag};
-  }
-  print "</div>\n<hr />";
-  my $url = download_url(uri_escape($filename), $rev, $mimetype);
-
-  if ($mimetype =~ m|^image/|i) {
-    printf '<img src="%s" alt="%s" /><br />',
-      $url . $barequery, htmlquote($filename);
-  } elsif (lc($mimetype) eq 'application/pdf') {
-    printf '<embed src="%s" width="100%%" height="100%%" /><br />',
-      $url . $barequery;
-  } else {
-
-    print "<pre>\n";
-    my $linenumbers = $input{ln} || 0;
-
-    if (my $enscript_hl = getEnscriptHL($filename)) {
-      doEnscript($filehandle, $enscript_hl, $linenumbers);
-
-    } else {
-      my $ln  = 0;
-      my @buf = ();
-      my $ts  = undef;
-
-      if ($preformat_in_markup) {
-        # prefetch several lines
-        @buf = head($filehandle);
-        my %d = scan_directives(@buf);
-        $ts = $d{tabstop};
-      }
-
-      while (@buf || !eof($filehandle)) {
-        $_ = @buf ? shift @buf : <$filehandle>;
-        if ($linenumbers) {
-          $ln++;
-          printf '<a id="l%d" class="src">%5d: </a>', ($ln) x 2;
-        }
-        print $preformat_in_markup ? spacedHtmlText($_, $ts) : htmlquote($_);
-      }
-    }
-
-    print "</pre>\n";
-  }
-  html_footer();
-}
-
-
-sub viewable($)
-{
-  return shift =~ m{^((text|image)/|application/pdf)}i;
-}
-
-
-###############################
-# Show Colored Diff
-###############################
-sub doDiff($$$$$$)
-{
-  my ($fullname, $r1, $tr1, $r2, $tr2, $f) = @_;
-
-  if (forbidden($fullname)) {
-    fatal('403 Forbidden', 'Access to %s forbidden.', $where);
-  }
-
-  my ($rev1, $sym1);
-  if ($r1 =~ /([^:]+)(:(.+))?/) {
-    $rev1 = $1;
-    $sym1 = $3;
-  }
-  if ($r1 eq 'text') {
-    $rev1 = $tr1;
-    $sym1 = "";
-  }
-
-  my ($rev2, $sym2);
-  if ($r2 =~ /([^:]+)(:(.+))?/) {
-    $rev2 = $1;
-    $sym2 = $3;
-  }
-  if ($r2 eq 'text') {
-    $rev2 = $tr2;
-    $sym2 = "";
-  }
-
-  #
-  # rev1 and rev2 are now both numeric revisions.
-  # Thus we do a DWIM here and swap them if rev1 is after rev2.
-  # XXX should we warn about the fact that we do this?
-  if (&revcmp($rev1, $rev2) > 0) {
-    my ($tmp1, $tmp2) = ($rev1, $sym1);
-    ($rev1, $sym1) = ($rev2, $sym2);
-    ($rev2, $sym2) = ($tmp1, $tmp2);
-  }
-
-  my $mimetype = getMimeType($fullname);
-
-  #
-  #  Check for per-MIME type diff commands.
-  #
-  my $diffcmd = undef;
-  if (my $diffcmds = $DIFF_COMMANDS{lc($mimetype)}) {
-    if ($f =~ /^ext(\d*)$/) {
-      my $n = $1 || 0;
-      $diffcmd = $diffcmds->[$n];
-    }
-  }
-  if ($diffcmd && $diffcmd->{cmd} && $diffcmd->{name}) {
-
-    if ($diffcmd->{args} && ref($diffcmd->{args}) ne 'ARRAY') {
-      fatal('500 Internal Error',
-            'Configuration error: arguments to external diff tools must ' .
-            'be given as array refs.  See "<code>%s</code>" in ' .
-            '<code>%%DIFF_COMMANDS</code>.',
-            $diffcmd->{name});
-    }
-
-    (my $cvsname = $where) =~ s/\.diff$//;
-
-    # Create two temporary files with the two revisions
-    my $temp_fn1 = checkout_to_temp($cvsroot, $cvsname, $rev1);
-    my $temp_fn2 = checkout_to_temp($cvsroot, $cvsname, $rev2);
-
-    # Execute chosen diff binary.
-    local (*DIFF_OUT);
-    my @cmd = ($diffcmd->{cmd});
-    push(@cmd, @{$diffcmd->{args}}) if $diffcmd->{args};
-    push(@cmd, $temp_fn1, $temp_fn2);
-    my ($h, $err) = startproc(\@cmd, \"", '>pipe', \*DIFF_OUT);
-    if (!$h) {
-      unlink($temp_fn1);
-      unlink($temp_fn2);
-      fatal('500 Internal Error',
-            'Diff failure (exit status %s), output: <pre>%s</pre>',
-            $? >> 8 || -1, $err);
-    }
-
-    http_header($diffcmd->{type} || 'text/plain');
-    local $/ = undef;
-    print <DIFF_OUT>;
-    $h->finish();
-    unlink($temp_fn1);
-    unlink($temp_fn2);
-
-    exit;
-  }
-
-  #
-  # Normal CVS diff.
-  #
-
-  $f = $DEFAULTVALUE{f} || 'u' if ($f =~ /^ext\d*$/);
-  my $difftype = $DIFFTYPES{$f};
-  if (!$difftype) {
-    fatal("400 Bad arguments", 'Diff format %s not understood', $f);
-  }
-
-  my @difftype       = @{$difftype->{opts}};
-  my $human_readable = $difftype->{colored};
-
-  # Apply special diff options.  -p and -F are not available with side by side
-  # diffs and may cause problems with older (< 2.8) versions of diffutils if
-  # used with --side-by-side.
-  if ($showfunc && $f !~ /^s/) {
-    push(@difftype, '-p');
-    while (my ($re1, $re2) = each %funcline_regexp) {
-      if ($fullname =~ $re1) {
-        push(@difftype, '-F', $re2);
-        last;
-      }
-    }
-  }
-
-  if ($human_readable) {
-    push(@difftype, '-w')  if $hr_ignwhite;
-    push(@difftype, '-kk') if $hr_ignkeysubst;
-  }
-
-  my $fh = do { local (*FH); };
-  if (!open($fh, "-|")) {    # child
-    open(STDERR, ">&STDOUT");    # Redirect stderr to stdout
-    openOutputFilter();
-    exec($CMD{rcsdiff}, @rcsdiff_options, @difftype, "-r$rev1", "-r$rev2",
-         $fullname) or exit -1;
-  }
-
-  if ($human_readable) {
-    #
-    # Human readable diff.
-    #
-    human_readable_diff($fh, $rev2);
-    html_footer();
-    gzipclose();
-    exit;
-
-  } elsif ($f =~ /^([ucs])c$/) {
-    #
-    # Enscript colored diff.
-    #
-    my $hl = 'diff';
-    $hl .= $1 if ($1 eq 'u' || $1 eq 's');
-    (my $where_nd = $where)       =~ s/\.diff$//;
-    (my $pathname = $where_nd)    =~ s|((?<=/)Attic/)?[^/]*$||;
-    (my $filename = $where_nd)    =~ s|^.*/||;
-    (my $swhere   = $scriptwhere) =~ s|\.diff$||;
-    navigateHeader($swhere, $pathname, $filename, $rev2, 'diff');
-    printf(<<EOF, $where_nd, $rev1, $rev2);
-<h3 style="text-align: center">Diff for /%s between versions %s and %s</h3>
-<pre>
-EOF
-    doEnscript(\$fh, $hl, 0, 'cvsweb_diff');
-    print <<EOF;
-</pre>
-<hr style="width: 100%" />
-<form method="get" action="$scriptwhere">
-EOF
-    printDiffSelectStickyVars();
-    print 'Diff format: ';
-    printDiffSelect($use_java_script);
-    print "<input type=\"submit\" value=\"Show\" />\n</form>\n";
-    html_footer();
-    gzipclose();
-    exit;
-
-  } else {
-    #
-    # Plain diff.
-    #
-    http_header("text/plain");
-  }
-
-  #
-  #===================================================================
-  #RCS file: /home/ncvs/src/sys/netinet/tcp_output.c,v
-  #retrieving revision 1.16
-  #retrieving revision 1.17
-  #diff -c -r1.16 -r1.17
-  #*** /home/ncvs/src/sys/netinet/tcp_output.c     1995/11/03 22:08:08     1.16
-  #--- /home/ncvs/src/sys/netinet/tcp_output.c     1995/12/05 17:46:35     1.17
-  #
-  # Ideas:
-  # - nuke the stderr output if it's what we expect it to be
-  # - Add "no differences found" if the diff command supplied no output.
-  #
-  #*** src/sys/netinet/tcp_output.c     1995/11/03 22:08:08     1.16
-  #--- src/sys/netinet/tcp_output.c     1995/12/05 17:46:35     1.17 RELENG_2_1_0
-  # (bogus example, but...)
-  #
-  my ($f1, $f2);
-  if (grep { $_ eq '-u' } @difftype) {
-    $f1 = '---';
-    $f2 = '\+\+\+';
-  } else {
-    $f1 = '\*\*\*';
-    $f2 = '---';
-  }
-
-  while (<$fh>) {
-    if (m|^$f1 $cvsroot|o) {
-      s|$cvsroot/||o;
-      if ($sym1) {
-        chop;
-        $_ .= " $sym1\n";
-      }
-    } elsif (m|^$f2 $cvsroot|o) {
-      s|$cvsroot/||o;
-
-      if ($sym2) {
-        chop;
-        $_ .= " $sym2\n";
-      }
-    }
-    print $_;
-  }
-  close($fh);
-}
-
-
-###############################
-# Show Logs ..
-###############################
-sub getDirLogs($$@)
-{
-  my ($cvsroot, $dirname, @otherFiles) = @_;
-  my $tag = $input{only_with_tag};
-  my $DirName = catdir($cvsroot, $where);
-
-  my @files = &safeglob("$DirName/*,v");
-  push (@files, &safeglob("$DirName/Attic/*,v")) unless $input{hideattic};
-  foreach my $file (@otherFiles) {
-    push(@files, catfile($DirName, $file));
-  }
-
-  # Weed out unreadable files.
-  my $i = 0;
-  my @unreadable = ();
-  while ($i < scalar(@files)) {
-    # Note: last modified files from subdirs returned by
-    # findLastModifiedSubdirs() come without the ,v suffix so they're not
-    # found here, but have already been checked for readability.  *cough*
-    if (-r $files[$i] || !-e _) {
-      $i++;
-    } else {
-      push(@unreadable, splice(@files, $i, 1));
-    }
-  }
-
-  # If there are no files, we're done.
-  return @unreadable unless @files;
-
-  my @cmd = ($CMD{rlog});
-  # Can't use -r<tag> as '-' is allowed in tagnames,
-  # but misinterpreted by rlog.
-  push(@cmd, '-r') unless defined($tag);
-
-  my $fh = do { local (*FH); };
-  if (!open($fh, '-|')) {                       # Child
-    open(STDERR, '>', devnull()) unless $DEBUG; # Ignore rlog's complaints.
-    openOutputFilter();
-    if ($file_list_len && $file_list_len > 1) {
-      while (scalar(@files) > $file_list_len) {  # Process files in chunks.
-        system(@cmd, splice(@files, 0, $file_list_len)) == 0 or exit -1;
-      }
-    }
-    exec(@cmd, @files) or exit -1;
-  }
-  undef @cmd;
-
-  my $state = 'start';
-  my ($date, $branchpoint, $branch, $log, @filetags);
-  my ($rev, $revision, $revwanted, $filename, $head, $author, $keywordsubst);
-
-  while (<$fh>) {
-    if ($state eq "start") {
-
-      #Next file. Initialize file variables
-      $rev         = '';
-      $revwanted   = '';
-      $branch      = '';
-      $branchpoint = '';
-      $filename    = '';
-      $log         = '';
-      $revision    = '';
-      %symrev      = ();
-      @filetags    = ();
-      $keywordsubst= '';
-
-      #jump to head state
-      $state = "head";
-    }
-
-    again:
-
-    if ($state eq "head") {
-
-      #$rcsfile = $1 if (/^RCS file: (.+)$/); #not used (yet)
-
-      if (/^Working file: (.+)$/) {
-        $filename = $1;
-      } elsif (/^head: (.+)$/) {
-        $head = $1;
-      } elsif (/^branch: (.+)$/) {
-        $branch = $1;
-      } elsif (/^keyword substitution: (.+)$/) {
-        $keywordsubst = $1;
-      } elsif (/^symbolic names:/) {
-        $state = "tags";
-        ($branch = $head) =~ s/\.\d+$//
-          if $branch eq '';
-        $branch =~ s/(\d+)$/0.$1/;
-        $symrev{MAIN}  = $branch;
-        $symrev{HEAD}  = $branch;
-        $alltags{MAIN} = 1;
-        $alltags{HEAD} = 1;
-        push (@filetags, "MAIN", "HEAD");
-      } elsif ($_ =~ LOG_REVSEPR) {
-        $state = "log";
-        $rev   = '';
-        $date  = '';
-        $log   = '';
-
-        # Try to reconstruct the relative filename if RCS spits out a full path
-        $filename =~ s%^\Q$DirName\E/%%;
-      }
-      next;
-    }
-
-    if ($state eq "tags") {
-      if (/^\s+([^:]+):\s+([\d\.]+)\s*$/) {
-        push (@filetags, $1);
-        $symrev{$1}  = $2;
-        $alltags{$1} = 1;
-        next;
-      } elsif (/^\S/) {
-
-        if (defined($tag)) {
-          if (defined($symrev{$tag}) || $tag eq "HEAD") {
-            $revwanted    = $symrev{$tag eq "HEAD" ? "MAIN" : $tag};
-            ($branch      = $revwanted) =~ s/\b0\.//;
-            ($branchpoint = $branch)    =~ s/\.?\d+$//;
-            $revwanted    = '' if ($revwanted ne $branch);
-          } elsif ($tag ne "HEAD") {
-            $state = "skip";
-            next;
-          }
-        }
-
-        foreach my $tagfound (@filetags) {
-          $tags{$tagfound} = 1;
-        }
-        $state = "head";
-        goto again;
-      }
-    }
-
-    if ($state eq "log") {
-      if ($_ =~ LOG_REVSEPR || $_ =~ LOG_FILESEPR) {
-
-        # End of a log entry.
-        my $revbranch = $rev;
-        $revbranch =~ s/\.\d+$//;
-
-        if ($revwanted eq '' && $branch ne '' && $branch eq $revbranch
-            || !defined($tag))
-        {
-          $revwanted = $rev;
-        }
-
-        if ($revwanted ne ''
-            ? $rev eq $revwanted
-            : $branchpoint ne ''
-              ? $rev eq $branchpoint
-              : 0
-            && ($rev eq $head))
-        {    # Don't think head is needed here..
-          my @finfo = ($rev, $date, $log, $author, $filename, $keywordsubst);
-          (my $name = $filename) =~ s%/.*%%;
-          $fileinfo{$name} = [@finfo];
-          $state = "done" if ($rev eq $revwanted);
-        }
-        $rev  = '';
-        $date = '';
-        $log  = '';
-      } elsif ($date eq ''
-               && m|^date:\s+(\d+)/(\d+)/(\d+)\s+(\d+):(\d+):(\d+);|)
-      {
-        my $yr    = $1;
-        $yr      -= 1900 if ($yr > 100); # Damn 2-digit year routines :-)
-        $date     = timegm($6, $5, $4, $3, $2 - 1, $yr);
-        ($author) = /author: ([^;]+)/;
-        $state    = 'log';
-        $log      = '';
-        next;
-      } elsif ($rev eq '' && /^revision (\d+(?:\.\d+)+).*$/) {
-        $rev = $1;    # .*$ eats up the locker(lockers?) info, if any
-        next;
-      } else {
-        $log .= $_;
-      }
-    }
-
-    if ($_ =~ LOG_FILESEPR) {
-      $state = "start";
-      next;
-    }
-  }
-
-  my $linesread = $. || 0;
-  close($fh);
-
-  if ($linesread == 0) {
-    fatal('500 Internal Error',
-          'Failed to spawn GNU rlog on <em>"%s"</em>.<br /><br />Did you set the <b><code>@command_path</code></b> in your configuration file correctly? (Currently: "<code>%s</code>")',
-          htmlquote(join(', ', @files)), join(':', @command_path));
-  }
-
-  return @unreadable;
-}
-
-
-sub readLog($;$)
-{
-  my ($fullname, $revision) = @_;
-  my ($symnames, $head, $rev, $br, $brp, $branch, $branchrev);
-
-  undef %symrev;
-  undef %revsym;
-  undef @allrevisions;
-  undef %date;
-  undef %author;
-  undef %state;
-  undef %difflines;
-  undef %log;
-  $keywordsubstitution = '';
-
-  my $fh = do { local (*FH); };
-  if (!open($fh, "-|")) {    # child
-    openOutputFilter();
-    $revision = defined($revision) ? "-r$revision" : '';
-    if ($revision =~ /\./) {
-      # Normal revision, not a branch/tag name.
-      exec($CMD{rlog}, $revision, $fullname) or exit -1;
-    } else {
-      exec($CMD{rlog}, $fullname) or exit -1;
-    }
-  }
-
-  my $curbranch = undef;
-  while (<$fh>) {
-    if ($symnames) {
-      if (/^\s+([^:]+):\s+([\d\.]+)/) {
-        $symrev{$1} = $2;
-        next;
-      } else {
-        $symnames = 0;
-      }
-    }
-    if (/^head:\s+([\d\.]+)/) {
-      $head = $1;
-    } elsif (/^branch:\s+([\d\.]+)/) {
-      $curbranch = $1;
-    } elsif (/^symbolic names/) {
-      $symnames = 1;
-    } elsif (/^keyword substitution: (.+)$/) {
-      $keywordsubstitution = $1;
-    } elsif (/^-----/) {
-      last;
-    }
-  }
-  ($curbranch = $head) =~ s/\.\d+$// if (!defined($curbranch));
-
-  # each log entry is of the form:
-  # ----------------------------
-  # revision 3.7.1.1
-  # date: 1995/11/29 22:15:52;  author: fenner;  state: Exp;  lines: +5 -3
-  # log info
-  # ----------------------------
-
-  # For a locked revision, the first line after the separator 
-  # becomes smth like
-  # revision 9.19       locked by: vassilii;
-
-  logentry:
-
-  while ($_ !~ LOG_FILESEPR) {
-    $_ = <$fh>;
-    last logentry if (!defined($_));    # EOF
-    if (/^revision (\d+(?:\.\d+)+)/) {
-      $rev = $1;
-      unshift(@allrevisions, $rev);
-    } elsif ($_ =~ LOG_FILESEPR || $_ =~ LOG_REVSEPR) {
-      next logentry;
-    } else {
-
-      # The rlog output is syntactically ambiguous.  We must
-      # have guessed wrong about where the end of the last log
-      # message was.
-      # Since this is likely to happen when people put rlog output
-      # in their commit messages, don't even bother keeping
-      # these lines since we don't know what revision they go with
-      # any more.
-      next logentry;
-    }
-    $_ = <$fh>;
-    if (
-      m|^date:\s+(\d+)/(\d+)/(\d+)\s+(\d+):(\d+):(\d+);\s+author:\s+(\S+);\s+state:\s+(\S+);\s+(lines:\s+([0-9\s+-]+))?|
-      )
-    {
-      my $yr           = $1;
-      $yr             -= 1900 if ($yr > 100); # Damn 2-digit year routines :-)
-      $date{$rev}      = timegm($6, $5, $4, $3, $2 - 1, $yr);
-      $author{$rev}    = $7;
-      $state{$rev}     = $8;
-      $difflines{$rev} = $10;
-    } else {
-      fatal("500 Internal Error", 'Error parsing RCS output: %s', $_);
-    }
-
-  line:
-    while (<$fh>) {
-      next line if (/^branches:\s/);
-      last line if ($_ =~ LOG_FILESEPR || $_ =~ LOG_REVSEPR);
-      $log{$rev} .= $_;
-    }
-  }
-  close($fh);
-
-  @revorder = reverse sort { revcmp($a, $b) } @allrevisions;
-
-  #
-  # HEAD is an artificial tag which is simply the highest tag number on the main
-  # branch, unless there is a branch tag in the RCS file in which case it's the
-  # highest revision on that branch.  Find it by looking through @revorder; it
-  # is the first commit listed on the appropriate branch.
-  # This is not neccesary the same revision as marked as head in the RCS file.
-  my $headrev = $curbranch || "1";
-  ($symrev{MAIN} = $headrev) =~ s/(\d+)$/0.$1/;
-
-  foreach $rev (@revorder) {
-    if ($rev =~ /^(\S*)\.\d+$/ && $headrev eq $1) {
-      $symrev{HEAD} = $rev;
-      last;
-    }
-  }
-  ($symrev{HEAD} = $headrev) =~ s/\.\d+$// unless defined($symrev{HEAD});
-
-  #
-  # Now that we know all of the revision numbers, we can associate
-  # absolute revision numbers with all of the symbolic names, and
-  # pass them to the form so that the same association doesn't have
-  # to be built then.
-  #
-  undef @branchnames;
-  undef %branchpoint;
-  undef $sel;
-
-  foreach (reverse sort keys %symrev) {
-    $rev = $symrev{$_};
-    if ($rev =~ /^((.*)\.)?\b0\.(\d+)$/) {
-      push (@branchnames, $_);
-
-      #
-      # A revision number of A.B.0.D really translates into
-      # "the highest current revision on branch A.B.D".
-      #
-      # If there is no branch A.B.D, then it translates into
-      # the head A.B .
-      #
-      # This reasoning also applies to the main branch A.B,
-      # with the branch number 0.A, with the exception that
-      # it has no head to translate to if there is nothing on
-      # the branch, but I guess this can never happen?
-      #
-      # (the code below gracefully forgets about the branch
-      # if it should happen)
-      #
-      $head = defined($2) ? $2 : "";
-      $branch = $3;
-      $branchrev = $head . ($head ne "" ? "." : "") . $branch;
-      $rev = $head;
-
-      my $regex = '^' . quotemeta($branchrev) . '\b';
-      $regex = qr/$regex/;
-
-      foreach my $r (@revorder) {
-        if ($r =~ $regex) {
-          $rev = $branchrev;
-          last;
-        }
-      }
-      next if ($rev eq "");
-
-      if ($rev ne $head && $head ne "") {
-        $branchpoint{$head} .= ', ' if ($branchpoint{$head});
-        $branchpoint{$head} .= $_;
-      }
-    }
-    $revsym{$rev} .= ", " if ($revsym{$rev});
-    $revsym{$rev} .= $_;
-    $sel .= sprintf("<option value=\"%s:%s\">%s</option>\n",
-                    htmlquote($rev), (htmlquote($_)) x 2);
-  }
-
-  my ($onlyonbranch, $onlybranchpoint);
-  if ($onlyonbranch = $input{only_with_tag}) {
-    $onlyonbranch = $symrev{$onlyonbranch};
-    if ($onlyonbranch && $onlyonbranch =~ s/\b0\.//) {
-      ($onlybranchpoint = $onlyonbranch) =~ s/\.\d+$//;
-    } else {
-      $onlybranchpoint = $onlyonbranch;
-    }
-
-    if (!defined($onlyonbranch) || $onlybranchpoint eq "") {
-      fatal("404 Tag not found", 'Tag "<code>%s</code>" is not defined.',
-            $input{only_with_tag});
-    }
-  }
-
-  undef @revisions;
-
-  foreach (@allrevisions) {
-    ($br  = $_)  =~ s/\.\d+$//;
-    ($brp = $br) =~ s/\.\d+$//;
-    next if ($onlyonbranch
-             && $br ne $onlyonbranch
-             && $_  ne $onlybranchpoint);
-    unshift(@revisions, $_);
-  }
-
-  if ($logsort eq "date") {
-
-    # Sort the revisions in commit order an secondary sort on revision
-    # (secondary sort needed for imported sources, or the first main
-    # revision gets before the same revision on the 1.1.1 branch)
-    @revdisplayorder =
-      sort { $date{$b} <=> $date{$a} || -revcmp($a, $b) } @revisions;
-  } elsif ($logsort eq "rev") {
-
-    # Sort the revisions in revision order, highest first
-    @revdisplayorder = reverse sort { revcmp($a, $b) } @revisions;
-  } else {
-
-    # No sorting. Present in the same order as rlog / cvs log
-    @revdisplayorder = @revisions;
-  }
-
-  return $curbranch;
-}
-
-
-sub getDiffLinks($$$)
-{
-  my ($url, $mimetype, $isbin) = @_;
-
-  my @links = ();
-  if (!$isbin) { # Offer ordinary diff only for non-binary files.
-    push(@links, &link('preferred', $url));
-    for my $difftype ($DIFFTYPES{$defaultDiffType}{colored} ? qw(u) : qw(h)) {
-      my $f = $difftype eq $defaultDiffType ? '' : $difftype;
-      push(@links,
-           &link(htmlquote(lc($DIFFTYPES{$difftype}{descr})), "$url;f=$f"));
-    }
-  }
-  if (my $extdiffs = $DIFF_COMMANDS{lc($mimetype)}) {
-    for my $i (0 .. scalar(@$extdiffs)-1) {
-      my $extdiff = $extdiffs->[$i];
-      push(@links, &link(htmlquote($extdiff->{name}), "$url;f=ext$i"))
-        if ($extdiff->{cmd} && $extdiff->{name});
-    }
-  }
-  return @links;
-}
-
-
-sub printLog($$$;$$)
-{
-  # inlogview: 1 if in log view, otherwise in markup view.
-  ($_, my $mimetype, my $isbin, my $inlogview, my $isSelected) = @_;
-  (my $br  = $_)  =~ s/\.\d+$//;
-  (my $brp = $br) =~ s/\.?\d+$//;
-
-  print "<a name=\"rev$_\"></a>";
-  if (defined($revsym{$_})) {
-    foreach my $sym (split(", ", $revsym{$_})) {
-      print '<a name="', htmlquote($sym), '"></a>';
-    }
-  }
-  if ($revsym{$br} && !defined($nameprinted{$br})) {
-    foreach my $sym (split(", ", $revsym{$br})) {
-      print '<a name="', htmlquote($sym), '"></a>';
-    }
-    $nameprinted{$br} = 1;
-  }
-
-  print "\n Revision <b>$_</b>";
-  if (/^1\.1\.1\.\d+$/) {
-    print " <i>(vendor branch)</i>";
-  }
-
-  (my $filename = $where) =~ s|^.*/||;
-  my $fileurl   = uri_escape($filename);
-  undef $filename;
-
-  my $isDead = ($state{$_} eq 'dead');
-  if (!$isDead) {
-
-    print ': ', download_link($fileurl, $_, 'download', $mimetype);
-
-    my @vlinks = ();
-    push(@vlinks, display_link($fileurl, $_, 'text', 'text/plain'))
-      unless $isbin;
-    push(@vlinks, display_link($fileurl, $_, 'markup', 'text/x-cvsweb-markup'))
-      if ($allow_markup && $inlogview && (!$isbin || viewable($mimetype)));
-    if (!$isbin && $allow_annotate) {
-      push(@vlinks,
-           &link('annotated',
-                 sprintf('%s?annotate=%s%s', $fileurl, $_, $barequery)));
-    }
-    print ' - view: ', join(', ', @vlinks) if @vlinks;
-    undef @vlinks;
-
-    if (!$isbin && $allow_version_select) {
-      print ' - ';
-      if ($isSelected) {
-        print '<b>[selected&nbsp;for&nbsp;diffs]</b>';
-      } else {
-        print &link('select&nbsp;for&nbsp;diffs',
-                    sprintf('%s?r1=%s%s#rev%s',
-                            $fileurl, $_, $barequery, $_));
-      }
-    }
-    print ' - ', graph_link('', 'revision graph')
-      if (!$inlogview && $allow_cvsgraph);
-  }
-  print "<br />\n";
-
-  print '<i>';
-  if (defined @mytz) {
-    my ($est) = $mytz[(localtime($date{$_}))[8]];
-    print scalar localtime($date{$_}), " $est</i> (";
-  } else {
-    print scalar gmtime($date{$_}), " UTC</i> (";
-  }
-  print readableTime(time() - $date{$_}, 1), ' ago)';
-  print ' by <i>', htmlquote($author{$_}), "</i><br />\n";
-
-  printf("Branches: %s<br />\n", link_tags($revsym{$br})) if $revsym{$br};
-  printf("CVS tags: %s<br />\n", link_tags($revsym{$_}))  if $revsym{$_};
-  printf("Branch point for: %s<br />\n", link_tags($branchpoint{$_}))
-    if $branchpoint{$_};
-
-  # Find the previous revision
-  my $prev;
-  my @prevrev = split(/\./, $_);
-  do {
-    if (--$prevrev[$#prevrev] <= 0) {
-
-      # If it was X.Y.Z.1, just make it X.Y
-      pop (@prevrev);
-      pop (@prevrev);
-    }
-    $prev = join (".", @prevrev);
-  } until (defined($date{$prev}) || $prev eq "");
-
-  if ($isDead) {
-    print "<b><i>FILE REMOVED</i></b><br />\n";
-  } else {
-    my %diffrev = ();
-    $diffrev{$_} = 1;
-    $diffrev{""} = 1;
-    my $diff = 'Diff to:';
-    my $printed = 0;
-
-    #
-    # Offer diff to previous revision
-    if ($prev) {
-      $diffrev{$prev} = 1;
-      my $url =
-        sprintf('%s.diff?r1=%s;r2=%s%s', $fileurl, $prev, $_, $barequery);
-      if (my @dlinks = getDiffLinks($url, $mimetype, $isbin)) {
-        print $diff, ' previous ', $prev, ': ', join(', ', @dlinks);
-        $diff = ';'; $printed = 1;
-      }
-    }
-
-    #
-    # Plus, if it's on a branch, and it's not a vendor branch,
-    # offer a diff with the branch point.
-    if ($revsym{$brp}
-      && !/^1\.1\.1\.\d+$/
-      && !defined($diffrev{$brp}))
-    {
-      my $url =
-        sprintf('%s.diff?r1=%s;r2=%s%s', $fileurl, $brp, $_, $barequery);
-      if (my @dlinks = getDiffLinks($url, $mimetype, $isbin)) {
-        print $diff, ' branchpoint ', $brp, ': ', join(', ', @dlinks);
-        $diff = ';'; $printed = 1;
-      }
-    }
-
-    #
-    # Plus, if it's on a branch, and it's not a vendor branch,
-    # offer to diff with the next revision of the higher branch.
-    # (e.g. change gets committed and then brought
-    # over to -stable)
-    if (/^\d+\.\d+\.\d+/ && !/^1\.1\.1\.\d+$/) {
-      my ($i, $nextmain);
-
-      for ($i = 0; $i < $#revorder && $revorder[$i] ne $_; $i++) {
-      }
-      my @tmp2 = split(/\./, $_);
-      for ($nextmain = ""; $i > 0; $i--) {
-        my $next = $revorder[$i - 1];
-        my @tmp1 = split(/\./, $next);
-
-        if (@tmp1 < @tmp2) {
-          $nextmain = $next;
-          last;
-        }
-
-        # Only the highest version on a branch should have
-        # a diff for the "next MAIN".
-        last
-          if (@tmp1 - 1 <= @tmp2
-          && join (".", @tmp1[0 .. $#tmp1 - 1]) eq
-          join (".", @tmp2[0 .. $#tmp1 - 1]));
-      }
-
-      if (!defined($diffrev{$nextmain})) {
-        $diffrev{$nextmain} = 1;
-        my $url = sprintf('%s.diff?r1=%s;r2=%s%s',
-          $fileurl, $nextmain, $_, $barequery);
-        if (my @dlinks = getDiffLinks($url, $mimetype, $isbin)) {
-          print $diff, ' next MAIN ', $nextmain, ': ', join(', ', @dlinks);
-          $diff = ';'; $printed = 1;
-        }
-      }
-    }
-
-    # Plus if user has selected only r1, then present a link
-    # to make a diff to that revision
-    if (defined($input{r1}) && !defined($diffrev{$input{r1}})) {
-      $diffrev{$input{r1}} = 1;
-      my $url = sprintf('%s.diff?r1=%s;r2=%s%s',
-        $fileurl, $input{r1}, $_, $barequery);
-      if (my @dlinks = getDiffLinks($url, $mimetype, $isbin)) {
-        print $diff, ' selected ', $input{r1}, ': ', join(', ', @dlinks);
-        $diff = ';'; $printed = 1;
-      }
-    }
-
-    print "<br />\n" if $printed;
-  }
-
-  if ($prev ne "" && $difflines{$_}) {
-    printf "Changes since revision %s: %s lines<br />\n",
-      htmlquote($prev), htmlquote($difflines{$_});
-  }
-
-  print "<pre class=\"log\">\n";
-  print &htmlify($log{$_}, $allow_log_extra);
-  print "</pre>\n";
-}
-
-
+	if ($r1 =~ /([^:]+)(:(.+))?/) {
+	    $rev1 = $1;
+	    $sym1 = $3;
+	}
+	if ($rev1 eq 'text') {
+	    $rev1 = $tr1;
+	}
+	if ($r2 =~ /([^:]+)(:(.+))?/) {
+	    $rev2 = $1;
+	    $sym2 = $3;
+	}
+	if ($rev2 eq 'text') {
+	    $rev2 = $tr2;
+	}
+	if (!($rev1 =~ /^[\d\.]+$/) || !($rev2 =~ /^[\d\.]+$/)) {
+	    &fatal("404 Not Found",
+		    "Malformed query \"$ENV{'QUERY_STRING'}\"");
+	}
 #
-# Generates the HTML view for CvsGraph.
+# rev1 and rev2 are now both numeric revisions.
+# Thus we do a DWIM here and swap them if rev1 is after rev2.
+# XXX should we warn about the fact that we do this?
+	if (&revcmp($rev1,$rev2) > 0) {
+	    ($tmp1, $tmp2) = ($rev1, $sym1);
+	    ($rev1, $sym1) = ($rev2, $sym2);
+	    ($rev2, $sym2) = ($tmp1, $tmp2);
+	}
 #
-sub doGraphView()
-{
-  (my $pathname = $where) =~ s|[^/]*$||;
-  (my $filename = $where) =~ s|^.*/||;
-
-  navigateHeader($scriptwhere, $pathname, $filename, undef, 'graph');
-
-  my $title = 'Revision graph of ' . htmlquote($pathname . $filename);
-  my $mapname = 'CvsGraphMap';
-
-  printf(<<EOF, $title, $mapname, $cvstree, $title);
-<h3 style="text-align: center">%s</h3>
-<div style="text-align: center"><img border="0" usemap="#%s" src="?cvsroot=%s;graph=1;makeimage=1" alt="%s" />
-EOF
-
-  # Remove any pre-existing tag/branch names from branch links.
-  (my $notag_query = $barequery) =~ s/;+only_with_tag=.*?(?=;|$)//g;
-
-  my @graph_cmd =
-    ($CMD{cvsgraph},
-     '-r', $cvsroot,
-     '-m', $pathname,
-     '-i',
-     '-M', $mapname,
-     '-x', 'x',
-     "-Omap_branch_href=\"href=\\\"./?only_with_tag=%(%t%)$notag_query\\\"\"",
-     "-Omap_rev_href=\"href=\\\"?rev=%(%R%)$barequery\\\"\"",
-     "-Omap_diff_href=\"href=\\\"%(%F%).diff" .
-     "?r1=%(%P%);r2=%(%R%)$barequery\\\"\"",
-     );
-  push(@graph_cmd, '-c', $cvsgraph_config) if $cvsgraph_config;
-  push(@graph_cmd, $filename . ',v');
-
-  local *CVSGRAPH_OUT;
-  my ($h, $err) =
-    startproc(\@graph_cmd, \"", '>pipe', \*CVSGRAPH_OUT);
-  fatal('500 Internal Error', $err) unless $h;
-
-  # Browser compatibility kludge: many browsers do not support client side
-  # image maps where the <map> element contains only the id attribute.  Let's
-  # add the corresponding name attribute to it on the fly.
-  while (<CVSGRAPH_OUT>) {
-    s/(<map\s+id="([^"]+)")\s*>/$1 name="$2">/;
-    print;
-  }
-
-  $h->finish();
-  print "</div>\n";
-
-  html_footer();
-}
-
-
+#	XXX Putting '-p' here is a personal preference
+	if ($f eq 'c') {
+	    $difftype = '-p -c';
+	    $diffname = "Context diff";
+	} elsif ($f eq 's') {
+	    $difftype = '--side-by-side --width=164';
+	    $diffname = "Side by Side";
+	} else {
+	    $difftype = '-p -u';
+	    $diffname = "Unidiff";
+	}
+# XXX should this just be text/plain
+# or should it have an HTML header and then a <pre>
+	print "Content-type: text/plain\n\n";
+	open(RCSDIFF, "rcsdiff $difftype -r$rev1 -r$rev2 '$fullname' 2>&1 |") ||
+	    &fail("500 Internal Error", "Couldn't rcsdiff: $!");
 #
-# Generates a graph using CvsGraph.
+#===================================================================
+#RCS file: /home/ncvs/src/sys/netinet/tcp_output.c,v
+#retrieving revision 1.16
+#retrieving revision 1.17
+#diff -c -r1.16 -r1.17
+#*** /home/ncvs/src/sys/netinet/tcp_output.c     1995/11/03 22:08:08     1.16
+#--- /home/ncvs/src/sys/netinet/tcp_output.c     1995/12/05 17:46:35     1.17
 #
-sub doGraph()
-{
-  (my $pathname = $where) =~ s|[^/]*$||;
-  (my $filename = $where) =~ s|^.*/||;
-
-  http_header('image/png');
-
-  my @graph_cmd = ($CMD{cvsgraph}, '-r', $cvsroot, '-m', $pathname);
-  push(@graph_cmd, '-c', $cvsgraph_config) if $cvsgraph_config;
-  push(@graph_cmd, $filename . ',v');
-
-  local *CVSGRAPH_OUT;
-  my ($h, $err) =
-    startproc(\@graph_cmd, \"", '>pipe', \*CVSGRAPH_OUT);
-  fatal('500 Internal Error', $err) unless $h;
-  {
-    local $/ = undef;
-    binmode(\*STDOUT);
-    print <CVSGRAPH_OUT>;
-  }
-  $h->finish();
-}
-
-
-sub doLog($)
-{
-  my ($fullname) = @_;
-
-  my $curbranch = readLog($fullname);
-
-  html_header("CVS log for $where");
-
-  my $upwhere = $where;
-  (my $filename = $where) =~ s|^.*/||;
-  my $backurl = "./$query#" . uri_escape($filename);
-  if ($where =~ m|^(.*?)((?<=/)Attic/)?[^/]+$|) {
-    $upwhere = $1;
-    $backurl = ".$backurl" if $2; # skip over Attic
-  }
-
-  my $isbin = $keywordsubstitution =~ /b/;
-  my $mimetype = getMimeType($filename, $isbin);
-
-  print "<p>\n ";
-  print &link($backicon, $backurl), " <b>Up to ",
-    &clickablePath($upwhere, 1), "</b>\n</p>\n";
-  print "<p>\n ";
-  print &link('Request diff between arbitrary revisions', '#diff');
-  print ' - ', &graph_link('', 'Display revisions graphically')
-    if $allow_cvsgraph;
-  if ($cvshistory_url) {
-    (my $d = $upwhere) =~ s|/+$||;
-    print ' - ', history_link($d, $filename);
-  }
-  print "\n</p>\n<hr />\n";
-
-  print "<p>\n";
-
-  my $explain = $isbin ? ' (i.e.: CVS considers this a binary file)' : '';
-  print "Keyword substitution: $keywordsubstitution$explain<br />\n";
-  if ($curbranch) {
-    print "Default branch: ", ($revsym{$curbranch} || $curbranch);
-  } else {
-    print "No default branch";
-  }
-  print "<br />\n";
-
-  print 'Current tag: ', htmlquote($input{only_with_tag}), "<br />\n"
-    if $input{only_with_tag};
-  print "</p>\n";
-
-  undef %nameprinted;
-
-  for my $r (@revdisplayorder) {
-    print "<hr />\n";
-    my $sel = (defined($input{r1}) && $input{r1} eq $r);
-    print "<div class=\"diff-selected\">\n" if $sel;
-    printLog($r, $mimetype, $isbin, 1, $sel);
-    print "</div>\n" if $sel;
-  }
-
-  printf(<<EOF, $scriptwhere);
-<hr />
-<form method="get" action="%s.diff" id="diff_select">
-<fieldset>
-<legend>Diff request</legend>
-<p>
- <a name="diff">
-  This form allows you to request diffs between any two revisions of a file.
-  You may select a symbolic revision name using the selection box or you may
-  type in a numeric name using the type-in text box.
- </a>
-</p>
-EOF
-
-  foreach (@stickyvars) {
-    printf("<input type=\"hidden\" name=\"%s\" value=\"%s\" />\n",
-           $_, htmlquote($input{$_}))
-      if (defined($input{$_}) &&
-          (!defined($DEFAULTVALUE{$_}) || $input{$_} ne $DEFAULTVALUE{$_}));
-  }
-
-  print <<EOF;
-<table summary="Diff between arbitrary revisions">
-<tr>
-<td class="opt-label">
-<label for="r1" accesskey="1">Diffs between</label>
-</td>
-<td class="opt-value">
-<select id="r1" name="r1">
-<option value="text" selected="selected">Use Text Field</option>
-EOF
-  print $sel, "</select>\n";
-
-  my $diffrev = defined($input{r1}) ?
-    $input{r1} : $revdisplayorder[$#revdisplayorder];
-
-  printf(<<EOF, $inputTextSize, $diffrev);
-<input type="text" size="%s" name="tr1" value="%s" onchange="this.form.r1.selectedIndex=0" />
-</td>
-<td></td>
-</tr>
-<tr>
-<td class="opt-label">
-<label for="r2" accesskey="2">and</label>
-</td>
-<td class="opt-value">
-<select id="r2" name="r2">
-<option value="text" selected="selected">Use Text Field</option>
-EOF
-  print $sel, "</select>\n";
-
-  $diffrev = defined($input{r2}) ? $input{r2} : $revdisplayorder[0];
-
-  printf(<<EOF, $inputTextSize, $diffrev, $scriptwhere);
-<input type="text" size="%s" name="tr2" value="%s" onchange="this.form.r2.selectedIndex=0" />
-</td>
-<td><input type="submit" value="Get Diffs" accesskey="G" /></td>
-</tr>
-</table>
-</fieldset>
-</form>
-<form method="get" action="%s">
-<fieldset>
-<legend>Log view options</legend>
-<table summary="Log view options">
-<tr>
-<td class="opt-label">
-<label for="f" accesskey="D">Preferred diff type:</label>
-</td>
-<td class="opt-value">
-EOF
-  printDiffSelect($use_java_script);
-  print <<EOF;
-</td>
-<td></td>
-</tr>
-EOF
-
-  if (@branchnames) {
-
-    printf(<<EOF, $use_java_script ? ' onchange="this.form.submit()"' : '');
-<tr>
-<td class="opt-label">
-<label for="only_with_tag" accesskey="B">View only branch:</label>
-</td>
-<td class="opt-value">
-<a name="branch">
-<select id="only_with_tag" name="only_with_tag"%s>
-EOF
-
-    my @tmp = ();
-    my $selfound = 0;
-    foreach (reverse sort @branchnames) {
-      my $selected =
-        (defined($input{only_with_tag}) && $input{only_with_tag} eq $_);
-      $selfound ||= $selected;
-      push(@tmp, sprintf('<option%s>%s</option>',
-                         $selected ? ' selected="selected"' : '',
-                         htmlquote($_)));
-    }
-    printf("<option value=\"\"%s>Show all branches</option>\n",
-           $selfound ? '' : ' selected="selected"');
-    print join("\n", @tmp);
-
-    print <<EOF
-</select>
-</a>
-</td>
-<td></td>
-</tr>
-EOF
-  }
-
-  print <<EOF;
-<tr>
-<td class="opt-label">
-<label for="logsort" accesskey="L">Sort log by:</label>
-</td>
-<td>
-EOF
-  printLogSortSelect($use_java_script);
-  print <<EOF;
-</td>
-<td><input type="submit" value="Set" accesskey="S" /></td>
-</tr>
-</table>
-EOF
-  foreach (@stickyvars) {
-    next if ($_ eq "f");
-    next if ($_ eq "only_with_tag");
-    next if ($_ eq "logsort");
-    printf("<input type=\"hidden\" name=\"$_\" value=\"%s\" />\n",
-           htmlquote($input{$_}))
-      if (defined($input{$_})
-          && (!defined($DEFAULTVALUE{$_}) || $input{$_} ne $DEFAULTVALUE{$_}));
-  }
-  print "</fieldset>\n</form>\n";
-  html_footer();
-}
-
-
-sub flush_diff_rows($$$$)
-{
-  my ($leftColRef, $rightColRef, $leftRow, $rightRow) = @_;
-
-  return unless defined($state);
-
-  if ($state eq "PreChangeRemove") {    # we just got remove-lines before
-    for (my $j = 0; $j < $leftRow; $j++) {
-      printf(<<EOF, spacedHtmlText(@$leftColRef[$j]));
-<tr>
- <td class="diff diff-removed">&nbsp;%s</td>
- <td class="diff diff-empty">&nbsp;</td>
-</tr>
-EOF
-    }
-  } elsif ($state eq "PreChange") {     # state eq "PreChange"
-                                        # we got removes with subsequent adds
-    if (HAS_EDIFF) {
-      # construct the suffix tree
-      my $left_diff = join("\n", @$leftColRef[0..$leftRow-1]);
-      my $right_diff = join("\n", @$rightColRef[0..$rightRow-1]);
-      my $diff_str = String::Ediff::ediff($left_diff, $right_diff);
-
-      my @diff_str = split(/ /, $diff_str);
-      my $INFINITY = 10000000;
-      push(@diff_str, ($INFINITY) x 8);
-      my ($idx, $b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2) =
-        (0, @diff_str[0..7]);
-      my ($l_cul, $r_cul) = (0, 0);
-      my ($ldx, $rdx) = (0, 0);
-      my (@left_html, @right_html);
-      for (my $j = 0; $j < $leftRow; $j++) {
-        my $line_len = length(@$leftColRef[$j]);
-        my $line = @$leftColRef[$j];
-        $l_cul += length($line) + 1; # includes "\n"
-        my $l_culx = $l_cul - 1; # not includes "\n"
-        if ($j < $lb1) {
-          $line = spacedHtmlText($line);
-          push(@left_html, "<td class=\"diff diff-changed\">$line</td>");
-        } elsif ($lb1 == $j) {
-          my $html_line;
-          while ($lb1 == $j) {
-            my $begin_char = $l_culx - $b1;
-
-            $line =~ /^(.*)(.{$begin_char})$/;
-            $html_line .= spacedHtmlText($1) .
-              '</span><span class="diff diff-unchanged">';
-            $line = $2;
-            last if ($j != $le1);
-
-            my $end_char = $l_culx - $e1;
-            $line =~ /^(.*)(.{$end_char})$/;
-            $html_line .= spacedHtmlText($1) .
-              '</span><span class="diff diff-changed">';
-            $line = $2;
-
-            $idx++;
-            my ($tb1, $te1, $tlb1, $tle1, $tb2, $te2, $tlb2, $tle2) =
-              ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2);
-            ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2) =
-              @diff_str[$idx*8..($idx+1)*8-1];
-            $lb1 = $INFINITY if ($lb1 < 0);
-            $lb2 = $INFINITY if ($lb2 < 0);
-            $le1 = $INFINITY if ($le1 < 0);
-            $le2 = $INFINITY if ($le2 < 0);
-            if ($te1 > $b1) {
-              ($b1, $lb1) = ($te1, $tle1);
-            }
-            if ($te2 > $b2) {
-              ($b2, $lb2) = ($te2, $tle2);
-            }
-          }
-          push(@left_html,
-               sprintf('<td><span class="diff diff-changed">%s%s</span></td>',
-                       $html_line, spacedHtmlText($line)));
-        } elsif ($le1 == $j) {
-          my $html_line;
-          while ($le1 == $j) {
-            my $end_char = $l_culx - $e1;
-            $line =~ /^(.*)(.{$end_char})$/;
-            $html_line .= spacedHtmlText($1) .
-              '</span><span class="diff diff-changed">';
-            $line = $2;
-
-            $idx++;
-            my ($tb1, $te1, $tlb1, $tle1, $tb2, $te2, $tlb2, $tle2) =
-              ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2);
-            ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2) =
-              @diff_str[$idx*8..($idx+1)*8-1];
-            $lb1 = $INFINITY if ($lb1 < 0);
-            $lb2 = $INFINITY if ($lb2 < 0);
-            $le1 = $INFINITY if ($le1 < 0);
-            $le2 = $INFINITY if ($le2 < 0);
-            if ($te1 > $b1) {
-              ($b1, $lb1) = ($te1, $tle1);
-            }
-            if ($te2 > $b2) {
-              ($b2, $lb2) = ($te2, $tle2);
-            }
-
-            last if ($lb1 != $j);
-
-            my $begin_char = $l_culx - $b1;
-
-            $line =~ /^(.*)(.{$begin_char})$/;
-            $html_line .= spacedHtmlText($1) .
-              '</span><span class="diff diff-unchanged">';
-            $line = $2;
-          }
-          push(@left_html,
-              sprintf('<td><span class="diff diff-unchanged">%s%s</span></td>',
-                      $html_line, spacedHtmlText($line)));
-        } else {
-          $line = spacedHtmlText($line);
-          push(@left_html, "<td class=\"diff diff-unchanged\">$line</td>");
-        }
-      }
-      ($idx, $b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2) =
-        (0, @diff_str[0..7]);
-      $lb1 = $INFINITY if ($lb1 < 0);
-      $lb2 = $INFINITY if ($lb2 < 0);
-      $le1 = $INFINITY if ($le1 < 0);
-      $le2 = $INFINITY if ($le2 < 0);
-      for (my $j = 0; $j < $rightRow; $j++) {
-        my $line_len = length(@$rightColRef[$j]);
-        my $line = @$rightColRef[$j];
-        $r_cul += length($line) + 1; # includes "\n"
-        my $r_culx = $r_cul - 1; # not includes "\n"
-        if ($j < $lb2) {
-          $line = spacedHtmlText($line);
-          push(@right_html, "<td class=\"diff diff-changed\">$line</td>");
-        } elsif ($lb2 == $j) {
-          my $html_line;
-          while ($lb2 == $j) {
-            my $begin_char = $r_culx - $b2;
-
-            $line =~ /^(.*)(.{$begin_char})$/;
-            $html_line .= spacedHtmlText($1) .
-              '</span><span class="diff diff-unchanged">';
-            $line = $2;
-
-            last if ($j != $le2);
-
-            my $end_char = $r_culx - $e2;
-            $line =~ /^(.*)(.{$end_char})$/;
-            $html_line .= spacedHtmlText($1) .
-              '</span><span class="diff diff-changed">';
-            $line = $2;
-
-            $idx++;
-            my ($tb1, $te1, $tlb1, $tle1, $tb2, $te2, $tlb2, $tle2) =
-              ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2);
-            ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2) =
-              @diff_str[$idx*8..($idx+1)*8-1];
-            $lb1 = $INFINITY if ($lb1 < 0);
-            $lb2 = $INFINITY if ($lb2 < 0);
-            $le1 = $INFINITY if ($le1 < 0);
-            $le2 = $INFINITY if ($le2 < 0);
-            if ($te1 > $b1) {
-              ($b1, $lb1) = ($te1, $tle1);
-            }
-            if ($te2 > $b2) {
-              ($b2, $lb2) = ($te2, $tle2);
-            }
-          }
-          push(@right_html,
-               sprintf('<td><span class="diff diff-changed">%s%s</span></td>',
-                       $html_line, spacedHtmlText($line)));
-        } elsif ($le2 == $j) {
-          my $html_line;
-          while ($le2 == $j) {
-            my $end_char = $r_culx - $e2;
-            $line =~ /^(.*)(.{$end_char})$/;
-            $html_line .= spacedHtmlText($1) .
-              '</span><span class="diff diff-changed">';
-            $line = $2;
-
-            $idx++;
-            my ($tb1, $te1, $tlb1, $tle1, $tb2, $te2, $tlb2, $tle2) =
-              ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2);
-            ($b1, $e1, $lb1, $le1, $b2, $e2, $lb2, $le2) =
-              @diff_str[$idx*8..($idx+1)*8-1];
-            $lb1 = $INFINITY if ($lb1 < 0);
-            $lb2 = $INFINITY if ($lb2 < 0);
-            $le1 = $INFINITY if ($le1 < 0);
-            $le2 = $INFINITY if ($le2 < 0);
-            if ($te1 > $b1) {
-              ($b1, $lb1) = ($te1, $tle1);
-            }
-            if ($te2 > $b2) {
-              ($b2, $lb2) = ($te2, $tle2);
-            }
-
-            last if ($lb2 != $j);
-
-            my $begin_char = $r_culx - $b2;
-            $line =~ /^(.*)(.{$begin_char})$/;
-            $html_line .= spacedHtmlText($1) .
-              '</span><span class="diff diff-unchanged">';
-            $line = $2;
-          }
-          push(@right_html,
-               sprintf('<td nowrap="nowrap"><span class="diff diff-unchanged"'.
-                       '>%s%s</span></td>',
-                       $html_line, spacedHtmlText($line)));
-        } else {
-          $line = spacedHtmlText ($line);
-          push @right_html, "<td class=\"diff diff-unchanged\">$line</td>";
-        }
-      }
-      for (my $j = 0; $j < $leftRow || $j < $rightRow ; $j++) { # dump out both cols
-        print  '<tr>';
-        if ($j < $leftRow) {
-          print $left_html[$j];
-        } else {
-          print '<td class="diff diff-changed-missing">&nbsp;</td>';
-        }
-        if ($j < $rightRow) {
-          print $right_html[$j];
-        } else {
-          print '<td class="diff diff-changed-missing">&nbsp;</td>';
-        }
-        print "</tr>\n";
-      }
-    } else {
-      for (my $j = 0; $j < $leftRow || $j < $rightRow; $j++) { # dump both cols
-        print "<tr>\n";
-        if ($j < $leftRow) {
-          print '<td class="diff diff-changed">&nbsp;' .
-            spacedHtmlText(@$leftColRef[$j]) . '</td>';
-        } else {
-          print '<td class="diff diff-changed-missing">&nbsp;</td>';
-        }
-        print "\n";
-
-        if ($j < $rightRow) {
-          print '<td class="diff diff-changed">&nbsp;' .
-            spacedHtmlText(@$rightColRef[$j]) . '</td>';
-        } else {
-          print '<td class="diff diff-changed-missing">&nbsp;</td>';
-        }
-        print "\n</tr>\n";
-      }
-    }
-  }
-}
-
-
+# Ideas:
+# - nuke the stderr output if it's what we expect it to be
+# - Add "no differences found" if the diff command supplied no output.
 #
-# Generates "human readable", HTMLified diffs.
+#*** src/sys/netinet/tcp_output.c     1995/11/03 22:08:08     1.16
+#--- src/sys/netinet/tcp_output.c     1995/12/05 17:46:35     1.17 RELENG_2_1_0
+# (bogus example, but...)
 #
-sub human_readable_diff($$)
-{
-  my ($fh, $rev) = @_;
-
-  (my $where_nd       = $where)       =~ s|\.diff$||;
-  (my $filename       = $where_nd)    =~ s|^.*/||;
-  (my $pathname       = $where_nd)    =~ s|((?<=/)Attic/)?[^/]*$||;
-  (my $scriptwhere_nd = $scriptwhere) =~ s|\.diff$||;
-
-  navigateHeader($scriptwhere_nd, $pathname, $filename, $rev, 'diff');
-
-  # Read header to pick up read revision and date, if possible.
-
-  my ($r1d, $r1r, $r2d, $r2r);
-  while (<$fh>) {
-    ($r1d, $r1r) = /\t(.*)\t(.*)$/ if (/^--- /);
-    ($r2d, $r2r) = /\t(.*)\t(.*)$/ if (/^\+\+\+ /);
-    last if (/^\+\+\+ /);
-  }
-
-  my ($rev1, $date1);
-  if (defined($r1r) && $r1r =~ /^(\d+\.)+\d+$/) {
-    $rev1  = $r1r;
-    $date1 = $r1d;
-  }
-  my ($rev2, $date2);
-  if (defined($r2r) && $r2r =~ /^(\d+\.)+\d+$/) {
-    $rev2  = $r2r;
-    $date2 = $r2d;
-  }
-  $rev1  = $input{r1}      unless defined($rev1);
-  $rev1  = $input{tr1}     if (defined($rev1) && $rev1 eq 'text');
-  $rev1  = 'unknown-left'  unless defined($rev1);
-  $rev2  = $input{r2}      unless defined($rev2);
-  $rev2  = $input{tr2}     if (defined($rev2) && $rev2 eq 'text');
-  $rev2  = 'unknown-right' unless defined($rev2);
-  $date1 = defined($date1) ? ', ' . htmlquote($date1) : '';
-  $date2 = defined($date2) ? ', ' . htmlquote($date2) : '';
-
-  my $link = uri_escape($filename) . ($query ? "$query;" : '?');
-
-  # Using <table style=\"border: none\" here breaks NS 4.x badly...
-  print <<EOF;
-<h3 style="text-align: center">Diff for /$where_nd between versions $rev1 and $rev2</h3>
-<table border="0" cellspacing="0" cellpadding="0" width="100%" summary="Diff output">
-<tr style="background-color: #ffffff">
-<th style="text-align: center; vertical-align: top" width="50%">
-<a href="${link}rev=$rev1">version $rev1</a>$date1
-</th>
-<th style="text-align: center; vertical-align: top" width="50%">
-<a href="${link}rev=$rev2">version $rev2</a>$date2
-</th>
-</tr>
-EOF
-
-  # Process diff text
-  # prefetch several lines
-  my @buf = head($fh);
-  my %d = scan_directives(@buf);
-
-  my $leftRow  = 0;
-  my $rightRow = 0;
-  my ($difftxt, @rightCol, @leftCol, $oldline, $newline, $funname);
-
-  $link .= 'content-type=text%2Fx-cvsweb-markup;';
-  $link .= 'ln=1;' unless ($link =~ /\?.*\bln=1\b/);
-
-  while (@buf || !eof($fh)) {
-    $difftxt = @buf ? shift @buf : <$fh>;
-
-    if ($difftxt =~ /^@@/) {
-      ($oldline, $newline, $funname) =
-        $difftxt =~ /@@ \-([0-9]+).*\+([0-9]+).*@@(.*)/;
-      $funname = htmlquote($funname);
-      $funname =~ s/\s/&nbsp;/go;
-      $funname &&= "&nbsp;<span style=\"font-size: smaller\">$funname</span>";
-      my $ol = $oldline || 1;
-      my $nl = $newline || 1;
-
-      print <<EOF;
-<tr>
-<td width="50%" class="diff-heading">
- <b><a href="${link}rev=$rev1#l$ol">Line&nbsp;$oldline</a></b>$funname
-</td>
-<td width="50%" class="diff-heading">
- <b><a href="${link}rev=$rev2#l$nl">Line&nbsp;$newline</a></b>$funname
-</td>
-</tr>
-EOF
-
-      $state    = "dump";
-      $leftRow  = 0;
-      $rightRow = 0;
-    } else {
-      my ($diffcode, $rest) = $difftxt =~ /^([-+ ])(.*)/;
-      $diffcode = '' unless defined($diffcode);
-      $_ = $rest;
-
-      #########
-      # little state machine to parse unified-diff output (Hen, zeller@think.de)
-      # in order to get some nice 'ediff'-mode output
-      # states:
-      #  "dump"             - just dump the value
-      #  "PreChangeRemove"  - we began with '-' .. so this could be the start of a 'change' area or just remove
-      #  "PreChange"        - okey, we got several '-' lines and moved to '+' lines -> this is a change block
-      ##########
-
-      if ($diffcode eq '+') {
-        if ($state eq "dump")
-        {    # 'change' never begins with '+': just dump out value
-          $_ = spacedHtmlText($rest, $d{tabstop});
-          printf(<<EOF, $_);
-<tr>
- <td class="diff diff-empty">&nbsp;</td>
- <td class="diff diff-added">&nbsp;%s</td>
-</tr>
-EOF
-        } else {    # we got minus before
-          $state = "PreChange";
-          $rightCol[$rightRow++] = $_;
-        }
-      } elsif ($diffcode eq '-') {
-        $state = "PreChangeRemove";
-        $leftCol[$leftRow++] = $_;
-      } else {    # empty diffcode
-        flush_diff_rows \@leftCol, \@rightCol, $leftRow, $rightRow;
-        $_ = spacedHtmlText($rest, $d{tabstop});
-        printf(<<EOF, $_, $_);
-<tr>
- <td class="diff diff-same">&nbsp;%s</td>
- <td class="diff diff-same">&nbsp;%s</td>
-</tr>
-EOF
-        $state    = "dump";
-        $leftRow  = 0;
-        $rightRow = 0;
-      }
-    }
-  }
-  close($fh);
-
-  flush_diff_rows \@leftCol, \@rightCol, $leftRow, $rightRow;
-
-  # state is empty if we didn't have any change
-  if (!$state) {
-    print <<EOF;
-<tr>
- <td colspan="2">&nbsp;</td>
-</tr>
-<tr class="diff diff-empty">
- <td colspan="2" align="center"><b>- No viewable change -</b></td>
-</tr>
-EOF
-  }
-
-  printf(<<EOF, $scriptwhere);
-</table>
-<hr style="width: 100%%" />
-<form method="get" action="%s">
-<div style="float: left">
-<label for="f">Diff format:<br />
-EOF
-  printDiffSelectStickyVars();
-  printDiffSelect($use_java_script);
-  printf(<<EOF, $rev1, $rev2);
-</label>
-<input type="submit" value="Show" />
-</div>
-<table style="float: right; border: thin outset" cellspacing="0" cellpadding="1" title="Legend" summary="Legend">
- <tr>
-  <td align="center" class="diff diff-removed">Removed from v.%s</td>
-  <td class="diff diff-empty">&nbsp;</td>
- </tr><tr class="diff diff-changed">
-  <td align="center" colspan="2">changed lines</td>
- </tr><tr>
-  <td class="diff diff-empty">&nbsp;</td>
-  <td align="center" class="diff diff-added">Added in v.%s</td>
- </tr>
-</table>
-</form>
-<br clear="all" />
-EOF
+	if ($difftype eq '-u') {
+	    $f1 = '---';
+	    $f2 = '\+\+\+';
+	} else {
+	    $f1 = '\*\*\*';
+	    $f2 = '---';
+	}
+	while (<RCSDIFF>) {
+	    if (m|^$f1 $cvsroot|o) {
+		s|$cvsroot/||o;
+		if ($sym1) {
+		    chop;
+		    $_ .= " " . $sym1 . "\n";
+		}
+	    } elsif (m|^$f2 $cvsroot|o) {
+		s|$cvsroot/||o;
+		if ($sym2) {
+		    chop;
+		    $_ .= " " . $sym2 . "\n";
+		}
+	    }
+	    print $_;
+	}
+	close(RCSDIFF);
 }
-
-
-sub doEnscript($$$;$)
-{
-  my ($filehandle, $highlight, $linenumbers, $lang) = @_;
-  $lang ||= 'cvsweb';
-
-  my @cmd = ($CMD{enscript},
-             @enscript_options,
-             '-q', "--language=$lang", '-o', '-', "--highlight=$highlight");
-
-  local *ENSCRIPT_OUT;
-  my ($h, $err) =
-    startproc(\@cmd, $filehandle, '>pipe', \*ENSCRIPT_OUT);
-  fatal('500 Internal Error', $err) unless $h;
-
-  # We could short-circuit and have enscript output directly to STDOUT above,
-  # but that doesn't work with mod_perl (at least some 1.99 versions).
-  if ($linenumbers) {
-    my $ln = 0;
-    while (<ENSCRIPT_OUT>) {
-      printf '<a id="l%d" class="src">%5d: </a>', (++$ln) x 2;
-      print $_;
-    }
-  } else {
-    local $/ = undef;
-    print <ENSCRIPT_OUT>;
-  }
-  $h->finish();
-}
-
-
-#
-# The passed in $path and $filename should not be URI escaped, and $swhere
-# *should* be.
-#
-sub navigateHeader($$$$$;$)
-{
-  my ($swhere, $path, $filename, $rev, $title, $moddate) = @_;
-  $swhere = "" if ($swhere eq $scriptwhere);
-  $swhere = './' . uri_escape($filename) if ($swhere eq "");
-
-  my $qfile = htmlquote($filename);
-  my $qpath = htmlquote($path);
-  my $trev  = $rev ? " - " . htmlquote($rev) : '';
-
-  http_header('', $moddate);
-
-  print <<EOF;
-$HTML_DOCTYPE
-<html>
-<head>
-<title>$qpath$qfile - $title$trev</title>
-$HTML_META$CSS</head>
-<body class="src">
-<table class="navigate-header" width="100%" summary="Navigation">
- <tr>
-  <td>
-EOF
-
-  my $frag = '';
-  if ($rev) {
-    $frag  = '#';
-    $frag .= 'rev' if ($rev =~ /\./);  # Normal revision: prefix with "rev".
-    $frag .= $rev;                     # Append revision/branch/tag.
-  }
-  my $backurl = "$swhere$query$frag";
-
-  print &link($backicon, $backurl);
-  printf '<b>Return to %s CVS log', &link($qfile, $backurl);
-  print "</b> $fileicon</td>";
-
-  printf(<<EOF, $diricon, &clickablePath($path, 1));
-  <td style="text-align: right">%s <b>Up to %s</b></td>
- </tr>
-</table>
-EOF
-}
-
-
-sub plural_write($$)
-{
-  my ($num, $text) = @_;
-  if ($num != 1) {
-    $text .= "s";
-  }
-
-  if ($num > 0) {
-    return join (' ', $num, $text);
-  } else {
-    return "";
-  }
-}
-
-
-##
-# print readable timestamp in terms of
-# '..time ago'
-# H. Zeller <zeller@think.de>
-##
-sub readableTime($$)
-{
-  my ($secs, $long) = @_;
-
-  # This function works correctly for time >= 2 seconds.
-  return 'very little time' if ($secs < 2);
-
-  my %desc = (
-              1        => 'second',
-              60       => 'minute',
-              3600     => 'hour',
-              86400    => 'day',
-              604800   => 'week',
-              2628000  => 'month',
-              31536000 => 'year'
-             );
-
-  my @breaks = sort { $a <=> $b } keys %desc;
-  my $i = 0;
-
-  while ($i <= $#breaks && $secs >= 2 * $breaks[$i]) {
-    $i++;
-  }
-  $i--;
-  my $break  = $breaks[$i];
-  my $retval = plural_write(int($secs / $break), $desc{$break});
-
-  if ($long == 1 && $i > 0) {
-    my $rest = $secs % $break;
-    $i--;
-    $break = $breaks[$i];
-    my $resttime = plural_write(int($rest / $break), $desc{$break});
-    if ($resttime) {
-      $retval .= ", $resttime";
-    }
-  }
-
-  return $retval;
-}
-
-
-#
-# Returns a htmlified path where each directory is a link for faster
-# navigation.  $clickLast controls whether the basename
-# (last directory/file) is a link as well.  The passed in $pathname should
-# *not* be URI escaped.
-#
-sub clickablePath($$)
-{
-  my ($pathname, $clickLast) = @_;
-
-  my $root = '[' . htmlquote($CVSROOTdescr{$cvstree} || $cvstree) . ']';
-
-  # This should never happen (see chooseCVSRoot()), but let's be sure...
-  return $root if ($pathname eq '/');
-
-  my $retval =
-    ' ' . &link($root, sprintf('%s/%s#dirlist', $scriptname, $query));
-  my $wherepath = '';
-  my ($lastslash) = $pathname =~ m|/$|;
-
-  foreach (split(m|/|, $pathname)) {
-    $retval .= ' / ';
-    $wherepath .= "/$_";
-    my $last = "$wherepath/" eq "/$pathname" || $wherepath eq "/$pathname";
-
-    if ($clickLast || !$last) {
-      $retval .= &link(htmlquote($_),
-                       join ('',
-                             $scriptname, uri_escape_path($wherepath),
-                             (!$last || $lastslash ? '/' : ''), $query,
-                             (!$last || $lastslash ? "#dirlist" : "")));
-    } else {    # do not make a link to the current dir
-      $retval .= htmlquote($_);
-    }
-  }
-  return $retval;
-}
-
-
-sub chooseCVSRoot()
-{
-  print "<form method=\"get\" action=\"$scriptwhere\">\n<p>\n";
-  if (2 <= @CVSROOT) {
-    foreach my $k (keys %input) {
-      printf("<input type=\"hidden\" name=\"%s\" value=\"%s\" />\n",
-             htmlquote($k), htmlquote($input{$k}))
-        if ($input{$k} && $k ne 'cvsroot');
-    }
-
-    printf(<<EOF, $use_java_script ? ' onchange="this.form.submit()"' : '');
-<label for="cvsroot" accesskey="C">CVS Root:
-<select id="cvsroot" name="cvsroot"%s>
-EOF
-
-    foreach my $k (@CVSROOT) {
-      printf("<option value=\"%s\"%s>%s</option>\n",
-             htmlquote($k),
-             ($k eq $cvstree) ? ' selected="selected"' : '',
-             htmlquote($CVSROOTdescr{$k} || $k));
-    }
-    print '</select></label>';
-  } else {
-
-    # no choice -- but we need the form to select module/path,
-    # at least for Netscape
-    printf "CVS Root: <b>[%s]</b>",
-      htmlquote($CVSROOTdescr{$cvstree} || $cvstree);
-  }
-
-  print <<EOF;
-<label for="mpath" accesskey="M">
-Module path or alias:
-<input type="text" id="mpath" name="path" value="" size="15" />
-</label>
-<input type="submit" value="Go" accesskey="O" />
-</p>
-</form>
-EOF
-}
-
-
-sub chooseMirror()
-{
-  # This code comes from the original BSD-cvsweb
-  # and may not be useful for your site; If you don't
-  # set %MIRRORS this won't show up, anyway.
-  scalar(%MIRRORS) or return;
-
-  # Should perhaps exclude the current site somehow...
-  print "\n<p>\nThis CVSweb is mirrored in\n";
-
-  my @tmp = map(&link(htmlquote($_), $MIRRORS{$_}), sort keys %MIRRORS);
-  my $tmp = pop (@tmp);
-
-  if (scalar(@tmp)) {
-    print join (', ', @tmp), ' and ';
-  }
-
-  print "$tmp.\n</p>\n";
-}
-
-
-sub fileSortCmp()
-{
-  (my $af = $a) =~ s/,v$//;
-  (my $bf = $b) =~ s/,v$//;
-  my ($rev1, $date1, $log1, $author1, $filename1) = @{$fileinfo{$af}}
-    if (defined($fileinfo{$af}));
-  my ($rev2, $date2, $log2, $author2, $filename2) = @{$fileinfo{$bf}}
-    if (defined($fileinfo{$bf}));
-
-  my $comp = 0;
-  if (defined($filename1) && defined($filename2) &&
-      $af eq $filename1   && $bf eq $filename2)
-  {
-
-    # Two files
-    $comp = -revcmp($rev1, $rev2)             if ($byrev  && $rev1  && $rev2);
-    $comp = ($date2   <=> $date1)             if ($bydate && $date1 && $date2);
-    if ($input{ignorecase}) {
-      $comp = (uc($log1)    cmp uc($log2))    if ($bylog && $log1 && $log2);
-      $comp = (uc($author1) cmp uc($author2)) if ($byauthor &&
-                                                  $author1 && $author2);
-    } else {
-      $comp = ($log1    cmp $log2)            if ($bylog && $log1 && $log2);
-      $comp = ($author1 cmp $author2)         if ($byauthor &&
-                                                  $author1 && $author2);
-    }
-  }
-
-  if ($comp == 0) {
-
-    # Directories first, then files under version control,
-    # then other, "rogue" files.
-    # Sort by filename if no other criteria available.
-
-    my $ad = (
-      (-d "$fullname/$a")
-      ? 'D'
-      : (defined($fileinfo{$af}) ? 'F' : 'R')
-    );
-    my $bd = (
-      (-d "$fullname/$b")
-      ? 'D'
-      : (defined($fileinfo{$bf}) ? 'F' : 'R')
-    );
-    (my $c = $a) =~ s|.*/||;
-    (my $d = $b) =~ s|.*/||;
-
-    my ($l, $r) = ("$ad$c", "$bd$d");
-    $comp = $input{ignorecase} ? (uc($l) cmp uc($r)) : ($l cmp $r);
-
-    # Parent dir is always first, then Attic.
-    if ($comp != 0) {
-      if ($l eq 'D..') {
-        $comp = -1;
-      } elsif ($r eq 'D..') {
-        $comp = 1;
-      } elsif ($l eq 'DAttic') {
-        $comp = -1;
-      } elsif ($r eq 'DAttic') {
-        $comp = 1;
-      }
-    }
-  }
-  return $comp;
-}
-
-#
-# Returns a URL to download the selected revision.
-# Expects the passed in URL to be URI escaped, relative, and without a query
-# string.
-#
-sub download_url($$;$)
-{
-  my ($url, $revision, $mimetype) = @_;
-  my @dots = $revision =~ /\./g;
-  $revision =~ s/\b0\.(?=\d+$)// if (scalar(@dots) & 1);
-
-  if (!defined($mimetype) || $mimetype !~ CVSWEBMARKUP) {
-    my $path = $where;
-    $path =~ s|[^/]+$||;
-    $url = "$scriptname/$CheckoutMagic/$path$url";
-  }
-  $url .= '?rev=' . uri_escape($revision);
-  $url .= ';content-type=' . uri_escape($mimetype) if $mimetype;
-
-  return $url;
-}
-
-#
-# Returns a link to download the selected revision.
-# Expects the passed in URL to be URI escaped, relative,
-# and without a query string.
-#
-sub download_link($$$;$)
-{
-  my ($url, $revision, $textlink, $mimetype) = @_;
-  return sprintf('<a href="%s" class="download-link">%s</a>',
-                 download_url($url, $revision, $mimetype) . $barequery,
-                 htmlquote($textlink));
-}
-
-#
-# Returns a URL to display the selected revision.
-# Expects the passed in URL to be URI escaped, and without a query string.
-#
-sub display_url($$;$)
-{
-  my ($url, $revision, $mimetype) = @_;
-  $url .= '?rev=' . uri_escape($revision);
-  $url .= ';content-type=' . uri_escape($mimetype) if $mimetype;
-  return $url;
-}
-
-#
-# Returns a link to display the selected revision.
-# Expects the passed in URL to be URI escaped, and without a query string.
-#
-sub display_link($$;$$)
-{
-  my ($url, $revision, $textlink, $mtype) = @_;
-  $textlink = $revision unless defined($textlink);
-  return sprintf('<a href="%s" class="display-link">%s</a>',
-                 display_url($url, $revision, $mtype) . $barequery,
-                 htmlquote($textlink));
-}
-
-#
-# Expects the passed in URL to be URI escaped, and without a query string.
-# The passed in link text should be already HTML escaped as appropriate.
-#
-sub graph_link($;$)
-{
-  my ($url, $text) = @_;
-  $text ||= $graphicon;
-  return sprintf('<a href="%s?graph=1%s">%s</a>', $url, $barequery, $text);
-}
-
-#
-# Returns a link to CVSHistory for the given directory and filename.
-#
-sub history_link($$;$)
-{
-  my ($dir, $file, $text) = @_;
-  $dir  ||= '';
-  $file ||= '';
-  $text ||= 'History';
-  return &link($text,
-               sprintf('%s?cvsroot=%s;dsearch=%s;fsearch=%s;limit=1',
-                       $cvshistory_url, uri_escape($input{cvsroot} || ''),
-                       uri_escape($dir), uri_escape($file)));
-}
-
-# Returns a Query string with the
-# specified parameter toggled
-sub toggleQuery($;$)
-{
-  my ($toggle, $value) = @_;
-
-  my %vars = %input;
-
-  if (defined($value)) {
-    $vars{$toggle} = $value;
-  } else {
-    $vars{$toggle} = $vars{$toggle} ? 0 : 1;
-  }
-
-  # Build a new query of non-default paramenters
-  my $newquery = "";
-  foreach my $var (@stickyvars) {
-    my ($value)   = defined($vars{$var})         ? $vars{$var}         : "";
-    my ($default) = defined($DEFAULTVALUE{$var}) ? $DEFAULTVALUE{$var} : "";
-
-    if ($value ne $default) {
-      $newquery .= ';' if ($newquery ne "");
-      $newquery .= uri_escape($var) . '=' . uri_escape($value);
-    }
-  }
-
-  if ($newquery) {
-    return '?' . $newquery;
-  }
-  return "";
-}
-
-sub htmlquote($)
-{
-  local ($_) = @_;
-  # Special Characters; RFC 1866
-  s/&/&amp;/g;
-  s/\"/&quot;/g;
-  s/</&lt;/g;
-  s/>/&gt;/g;
-  return $_;
-}
-
-sub htmlunquote($)
-{
-  local ($_) = @_;
-  # Special Characters; RFC 1866
-  s/&quot;/\"/g;
-  s/&lt;/</g;
-  s/&gt;/>/g;
-  s/&amp;/&/g;
-  return $_;
-}
-
-sub uri_escape_path($)
-{
-  return join('/', map(uri_escape($_), split(m|/+|, shift, -1)));
-}
-
-sub http_header(;$$)
-{
-  my ($content_type, $moddate) = @_;
-  $content_type ||= 'text/html';
-
-  $content_type .= "; charset=$charset"
-    if ($charset && $content_type =~ m,^text/,);
-
-  # Note that in the following, we explicitly join() and concatenate the
-  # headers instead of printing them as an array.  This is because some
-  # systems, eg. early versions of mod_perl 2 don't quite get it if the
-  # last \r\n\r\n isn't included in the last "payload" header print().
-
-  my @headers = ();
-  # TODO: ctime(3) from scalar gmtime() isn't HTTP compliant, see HTTP::Date.
-  push(@headers, 'Last-Modified: ' . scalar gmtime($moddate) . ' GMT')
-    if $moddate;
-  push(@headers, 'Content-Type: ' . $content_type);
-
-  if ($allow_compress && $maycompress) {
-    if (HAS_ZLIB
-        || (defined($CMD{gzip}) && open(GZIP, "| $CMD{gzip} -1 -c")))
-    {
-
-      push(@headers, 'Content-Encoding: x-gzip');
-      push(@headers, 'Vary: Accept-Encoding');     # RFC 2616, 14.44
-      print join("\r\n", @headers) . "\r\n\r\n";
-
-      $| = 1;
-      $| = 0;                                      # Flush header output.
-
-      tie(*GZIP, __PACKAGE__, \*STDOUT) if HAS_ZLIB;
-      select(GZIP);
-      $gzip_open = 1;
-
-    } else {
-
-      print join("\r\n", @headers) . "\r\n\r\n";
-      printf
-        '<span style="font-size: smaller">Unable to find gzip binary in the <b>$command_path</b> (<code>%s</code>) to compress output</span><br />',
-          htmlquote(join(':', @command_path));
-    }
-
-  } else {
-    print join("\r\n", @headers) . "\r\n\r\n";
-  }
-}
-
-
-sub html_header($;$)
-{
-  my ($title, $moddate) = @_;
-  $title  = htmlquote($title);
-  my $l   = $logo || '';
-  my $css = $CSS || '';
-  http_header('text/html', $moddate);
-  print <<EOH;
-$HTML_DOCTYPE
-<html>
-<head>
-<title>$title</title>
-$HTML_META$css</head>
-<body>
-$l <h1>$title</h1>
-EOH
-}
-
-sub html_footer()
-{
-  print "<hr />\n<address>$address</address>\n" if $address;
-  print "</body>\n</html>\n";
-}
-
-sub link_tags($)
-{
-  my ($tags) = @_;
-
-  (my $filename = $where) =~ s|^.*/||;
-  my $fileurl = './' . uri_escape($filename);
-
-  my $ret = "";
-  foreach my $sym (split(", ", $tags)) {
-    $ret .= ",\n" if ($ret ne "");
-    $ret .= &link(htmlquote($sym),
-                  $fileurl . toggleQuery('only_with_tag', $sym));
-  }
-  return $ret;
-}
-
-
-#
-# See if a file/dir is listed in the config file's @ForbiddenFiles list.
-# Takes a full file system path or one relative to $cvsroot, and strips the
-# trailing ",v" if present, then compares.  Returns 1 if forbidden, else 0.
-#
-sub forbidden($)
-{
-  (my $path = canonpath(shift)) =~ s/,v$//;
-  $path =~ s|^$cvsroot/+||;
-  for my $forbidden_re (@ForbiddenFiles) {
-    return 1 if ($path =~ $forbidden_re);
-  }
-  return 0;
-}
-
-
-#
-# Starts a process using IPC::Run.  All arguments are passed to
-# IPC::Run::start() as-is.  Returns an array ($harness, $error) where
-# $harness is from IPC::Run if start() succeeds, undef otherwise.  In case
-# of an error, $error contains the error message.
-#
-sub startproc(@)
-{
-  my $h = my $err = undef;
-  eval {
-    local $SIG{__DIE__};
-    $h = IPC::Run::start(@_) or die("return code: $?");
-  };
-  if ($@) {
-    $h->finish() if $h;
-    $h = undef;
-    $err = "'@{$_[0]}' failed: $@";
-  }
-  return ($h, $err);
-}
-
-#
-# Runs a process using IPC::Run.  All arguments are passed to
-# IPC::Run::run() as-is.  Returns an array ($exitcode, $errormsg).
-#
-sub runproc(@)
-{
-  eval {
-    local $SIG{__DIE__};
-    IPC::Run::run(@_);
-  };
-  my $exitcode = $? >> 8;
-  my $errormsg  = undef;
-  if ($@) {
-    $exitcode ||= -1;
-    $errormsg = "'@{$_[0]}' failed: $@";
-  }
-  return ($exitcode, $errormsg);
-}
-
-#
-# Check out a file to a temporary file.
-#
-sub checkout_to_temp($$$)
-{
-  my ($cvsroot, $cvsname, $rev) = @_;
-
-  # Pipe given cvs file into a temporary place.
-  my ($temp_fh, $temp_fn) = tempfile('.cvsweb.XXXXXXXX', DIR => tmpdir());
-
-  my @cmd = ($CMD{cvs}, @cvs_options, '-Qd', $cvsroot,
-             'co', '-p', "-r$rev", $cvsname);
-
-  local (*DIFF_OUT);
-  my ($h, $err) = startproc(\@cmd, \"", '>pipe', \*DIFF_OUT);
-  if ($h) {
-    local $/ = undef;
-    print $temp_fh <DIFF_OUT>;
-    $h->finish();
-    close($temp_fh);
-  } else {
-    close($temp_fh);
-    unlink($temp_fn);
-    fatal('500 Internal Error',
-          'Checkout failure (exit status %s), output: <pre>%s</pre>',
-          $? >> 8 || -1, $err);
-  }
-
-  return $temp_fn;
-}
-
-#
-# Close the GZIP handle, and remove the tie.
-#
-sub gzipclose
-{
-  if ($gzip_open) {
-    select(STDOUT);
-    close(GZIP);
-    untie *GZIP;
-    $gzip_open = 0;
-  }
-}
-
-# implement a gzipped file handle via the Compress:Zlib compression
-# library.
-
-sub MAGIC1() { 0x1f }
-sub MAGIC2() { 0x8b }
-sub OSCODE() { 3 }
-
-sub TIEHANDLE
-{
-  my ($class, $out) = @_;
-  my ($d) = Compress::Zlib::deflateInit(
-    -Level      => Compress::Zlib::Z_BEST_COMPRESSION(),
-    -WindowBits => -Compress::Zlib::MAX_WBITS()
-    )
-    or return undef;
-  my ($o) = { handle => $out,
-              dh     => $d,
-              crc    => 0,
-              len    => 0,
-            };
-  my ($header) = pack("c10",
-                      MAGIC1, MAGIC2, Compress::Zlib::Z_DEFLATED(),
-                      0, 0, 0, 0, 0, 0, OSCODE);
-  print {$o->{handle}} $header;
-  return bless($o, $class);
-}
-
-sub PRINT
-{
-  my ($o)   = shift;
-  my ($buf) = join (defined($,) ? $, : "", @_);
-  my ($len) = length($buf);
-  my ($compressed, $status) = $o->{dh}->deflate($buf);
-  print {$o->{handle}} $compressed if defined($compressed);
-  $o->{crc} = Compress::Zlib::crc32($buf, $o->{crc});
-  $o->{len} += $len;
-  return $len;
-}
-
-sub PRINTF
-{
-  my ($o)   = shift;
-  my ($fmt) = shift;
-  my ($buf) = sprintf($fmt, @_);
-  my ($len) = length($buf);
-  my ($compressed, $status) = $o->{dh}->deflate($buf);
-  print {$o->{handle}} $compressed if defined($compressed);
-  $o->{crc} = Compress::Zlib::crc32($buf, $o->{crc});
-  $o->{len} += $len;
-  return $len;
-}
-
-sub WRITE
-{
-  my ($o, $buf, $len, $off) = @_;
-  my ($compressed, $status) = $o->{dh}->deflate(substr($buf, 0, $len));
-  print {$o->{handle}} $compressed if defined($compressed);
-  $o->{crc} = Compress::Zlib::crc32(substr($buf, 0, $len), $o->{crc});
-  $o->{len} += $len;
-  return $len;
-}
-
-sub CLOSE
-{
-  my ($o) = @_;
-  return if !defined($o->{dh});
-  my ($buf) = $o->{dh}->flush();
-  $buf .= pack("V V", $o->{crc}, $o->{len});
-  print {$o->{handle}} $buf;
-  undef $o->{dh};
-}
-
-sub DESTROY
-{
-  my ($o) = @_;
-  CLOSE($o);
-}
-
-# Local variables:
-# indent-tabs-mode: nil
-# cperl-indent-level: 2
-# End: