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pjs/webtools/bonsai/cvsview2.cgi

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Perl
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#!/usr/bonsaitools/bin/perl -w
# -*- Mode: perl; indent-tabs-mode: nil -*-
# cvsview.cgi - fake up some HTML based on RCS logs and diffs
#
# The contents of this file are subject to the Netscape Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/NPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bonsai CVS tool.
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s):
# brendan and fur
#
# TODO in no particular order:
# - Mocha-automate the main page's form so clicking on rev links in the table
# change the default filename and revisions.
# - Add a tab width input to the main page's form.
# - Include log message in wasted horizontal real-estate of Shortcuts frame.
# - Make old and new diff lines go to separate, side-by-side frames, and use
# Mocha to slave their scrollbars together.
# - Allow expansion of the top-level table to include the revision histories
# of all the files in the directory.
# - More more more xdiff/gdiff-like features...
#
#
# SRCROOTS is an array of repository roots under which to look for CVS files.
#
use diagnostics;
use strict;
use CGI;
# Shut up misguided -w warnings about "used only once". "use vars" just
# doesn't work for me.
sub sillyness {
my $zz;
$zz = $::TreeInfo;
$zz = $::TreeList;
$zz = $::file_description;
$zz = $::principal_branch;
$zz = $::revision_ctime;
$zz = %::timestamp;
}
my $request = new CGI;
sub http_die {
print $request->header();
die (@_);
}
my $anchor_num = 0;
my $font_tag = "";
# Figure out which directory bonsai is in by looking at argv[0]
my $bonsaidir = $0;
$bonsaidir =~ s:/*[^/]*$::; # Remove last word and any slashes
if ($bonsaidir eq '') {
$bonsaidir = '.';
}
chdir $bonsaidir || http_die "Can't chdir to $bonsaidir";
require 'CGI.pl';
my $cocommand = Param('cocommand');
my $rcsdiffcommand = Param('rcsdiffcommand');
LoadTreeConfig();
my @SRCROOTS;
NEXTTREE: foreach my $i (@::TreeList) {
my $r = $::TreeInfo{$i}->{'repository'};
foreach my $j (@SRCROOTS) {
if ($r eq $j) {
next NEXTTREE;
}
}
push @SRCROOTS, $r;
}
my $debug = 0;
my $MAX_REVS = 8;
#
# Make sure both kinds of standard output go to STDOUT.
# XXX dup stdout onto stderr and flush stdout after the following prints
#
# Until then, replace standard die built-in with our own.
# sub die {
# print 'fatal error: ';
# print @_;
# exit;
# }
require 'cvsblame.pl';
#
# Print HTTP content-type header and the header-delimiting extra newline.
#
my $request_method = $request->request_method(); # e.g., "GET", "POST", etc.
my $script_name = $ENV{'SCRIPT_NAME'};
my $prefix = $script_name . '?'; # prefix for HREF= entries
$prefix = $script_name . $ENV{PATH_INFO} . '?' if (exists($ENV{PATH_INFO}));
# Parse options in URL. For example,
# http://w3/cgi/cvsview.pl?subdir=foo&file=bar would assign
# $opt_subdir = foo and $opt_file = bar.
my $opt_rev1 = $request->param('rev1');
my $opt_rev2 = $request->param('rev2');
my $opt_root = $request->param('root');
my $opt_files = $request->param('files');
my $opt_skip = $request->param('skip') || 0;
my $opt_diff_mode = $request->param('diff_mode') || 'context';
my $opt_whitespace_mode = $request->param('whitespace_mode') || 'show';
my $opt_file = $request->param('file');
my $opt_rev = $request->param('diff_mode');
my $opt_subdir = $request->param('subdir');
my $opt_branch = $request->param('branch');
my $opt_command = $request->param('command');
if (defined($opt_branch) && $opt_branch eq 'HEAD' ) { $opt_branch = ''; }
# Configuration colors for diff output.
my $stable_bg_color = 'White';
my $skipping_bg_color = '#c0c0c0';
my $header_bg_color = 'Orange';
my $change_bg_color = 'LightBlue';
my $addition_bg_color = 'LightGreen';
my $deletion_bg_color = 'LightGreen';
my $diff_bg_color = 'White';
# Ensure that necessary arguments are present
http_die("command not defined in URL\n") if $opt_command eq '';
http_die("command $opt_command: subdir not defined\n") if $opt_subdir eq '';
if ($opt_command eq 'DIFF' ||
$opt_command eq 'DIFF_FRAMESET' ||
$opt_command eq 'DIFF_LINKS') {
http_die("command $opt_command: file not defined in URL\n") if $opt_file eq '';
http_die("command $opt_command: rev1 not defined in URL\n") if $opt_rev1 eq '';
http_die("command $opt_command: rev2 not defined in URL\n") if $opt_rev2 eq '';
}
# Propagate diff options to created links
$prefix .= "diff_mode=$opt_diff_mode";
$prefix .= "&whitespace_mode=$opt_whitespace_mode";
$prefix .= "&root=$opt_root";
# Create a shorthand for the longest common initial substring of our URL.
my $magic_url = "$prefix&subdir=$opt_subdir";
# Now that we've munged QUERY_STRING into perl variables, set rcsdiff options.
my $rcsdiff = "$rcsdiffcommand -f";
$rcsdiff .= ' -w' if ($opt_whitespace_mode eq 'ignore');
# Handle the "root" argument
#
my $root = $opt_root;
if (defined $root && $root ne '') {
$root =~ s|/$||;
if (-d $root) {
unshift(@SRCROOTS, $root);
} else {
print "Error: Root, $root, is not a directory.<BR>\n";
print "</BODY></HTML>\n";
exit;
}
}
my $found = 0;
my $dir;
foreach $root (@SRCROOTS) {
$dir = "$root/$opt_subdir";
if (-d $dir) {
$found = 1;
last;
}
}
if (!$found) {
print "<FONT SIZE=5><B>Error:</B> $opt_subdir not found.";
exit;
}
sub http_lastmod {
&parse_cvs_file($dir.'/'.$opt_file.',v');
my $lm=str2time($::revision_ctime{$opt_rev1});
my $lm2=str2time($::revision_ctime{$opt_rev2});
$lm = $lm2 if $lm2 > $lm;
print "Last-Modified: ".time2str("%a, %d %b %Y %T %Z", $lm, "GMT")."\n";
print $request->header();
print "\n";
}
# Create top-level frameset document.
sub do_diff_frameset {
chdir($dir);
http_lastmod;
print "<TITLE>$opt_file: $opt_rev1 vs. $opt_rev2</TITLE>\n";
print "<FRAMESET ROWS='*,90' FRAMESPACING=0 BORDER=1>\n";
print " <FRAME NAME=diff+$opt_file+$opt_rev1+$opt_rev2 ",
" SRC=\"$magic_url&command=DIFF";
print "&root=$opt_root" if defined($opt_root);
print "&file=$opt_file&rev1=$opt_rev1&rev2=$opt_rev2\">\n";
print " <FRAME SRC=\"$magic_url&command=DIFF_LINKS";
print "&root=$opt_root" if defined($opt_root);
print "&file=$opt_file&rev1=$opt_rev1&rev2=$opt_rev2\">\n";
print "</FRAMESET>\n";
}
# Create links to document created by DIFF command.
sub do_diff_links {
http_lastmod;
print qq%
<HEAD>
<SCRIPT $::script_type><!--
var anchor = -1;
function nextAnchor() {
if (anchor < parent.frames[0].document.anchors.length)
parent.frames[0].location.hash = ++anchor;
};
function prevAnchor() {
if (anchor > 0)
parent.frames[0].location.hash = --anchor;
};
//--></SCRIPT>
<TITLE>$opt_file: $opt_rev1 vs. $opt_rev2</TITLE>
</HEAD>
<BODY BGCOLOR="#FFFFFF" TEXT="#000000"
LINK="#0000EE" VLINK="#551A8B" ALINK="#FF0000">
%;
CheckHidden("$dir/$opt_file");
chdir($dir);
open(RCSDIFF, "$rcsdiff -r$opt_rev1 -r$opt_rev2 $opt_file 2>/dev/null |");
print '<FORM><TABLE CELLPADDING=0 CELLSPACING=0 BORDER=0><TR VALIGN=TOP>';
my $diff_base = "cvsview2.cgi";
my $blame_base = "cvsblame.cgi";
my $lxr_path = "$opt_subdir/$opt_file";
my $lxr_link = Fix_LxrLink($lxr_path);
# Partial fix for bug 104313, which tries to fix blame links to be more intuitive.
# In this case, make the default behavior be that blame revisions match the requested
# diff version, rather than always showing the tip.
my $blame_link = "$blame_base?file=$opt_subdir/$opt_file&rev=$opt_rev2";
$blame_link .= "&root=$opt_root" if defined($opt_root);
my $diff_link = "$magic_url&command=DIRECTORY&file=$opt_file&rev1=$opt_rev1&rev2=$opt_rev2";
$diff_link .= "&root=$opt_root" if defined($opt_root);
my $graph_row = Param('cvsgraph') ? <<"--endquote--" : "";
<TR><TD NOWRAP ALIGN=RIGHT VALIGN=TOP><A HREF="cvsgraph.cgi?file=$opt_subdir/$opt_file" TARGET="_top"><B>graph:</B></A></TD>
<TD NOWRAP>View the revision tree as a graph</TD></TR>
--endquote--
print "<TD NOWRAP ALIGN=LEFT VALIGN=CENTER>";
print "<TABLE CELLPADDING=0 CELLSPACING=0 BORDER=0>";
print "<TR><TD NOWRAP ALIGN=RIGHT VALIGN=TOP><A HREF=\"$diff_link\" TARGET=_top><B>diff:</B></A> </TD>";
print "<TD NOWRAP>Change diff parameters.</TD></TR>\n";
print "<TR><TD NOWRAP ALIGN=RIGHT VALIGN=TOP><A HREF=\"$blame_link\" TARGET=_top><B>blame:</B></A></TD>";
print "<TD NOWRAP>Annotate line authors.</TD></TR>\n";
print "<TR><TD NOWRAP ALIGN=RIGHT VALIGN=TOP><A HREF=\"$lxr_link\" TARGET=_top><B>lxr:</B></A> </TD>";
print "<TD NOWRAP>Browse source as hypertext.</TD></TR>\n";
print $graph_row;
print "</TABLE>";
print "</TD>";
print "<TD WIDTH=8</TD>";
print "<TD>";
print "<INPUT TYPE=button VALUE='Prev' ONCLICK='prevAnchor()'><BR>";
print "<INPUT TYPE=button VALUE='Next' ONCLICK='nextAnchor()'>";
print "</TD>";
print "<TD WIDTH=8></TD>";
print "<TD><CODE>";
$anchor_num = 0;
while (<RCSDIFF>) {
# Get one command from the diff file
my $line = "";
if (/^(c|a)(\d+)/) {
$line = $2;
while (<RCSDIFF>) {
last if /^\.$/;
}
} elsif (/^d(\d+)/) {
$line = $1;
} else {
print "<FONT SIZE=5 COLOR=#ffffff><B>Internal error:</B>",
" unknown command $_",
" at $. in $opt_file $opt_rev1\n";
}
print '&nbsp' x (4 - length($line));
print "<A TARGET='diff+$opt_file+$opt_rev1+$opt_rev2'",
" HREF=\"$magic_url&command=DIFF";
print "&root=$opt_root" if defined($opt_root);
print "&file=$opt_file&rev1=$opt_rev1&rev2=$opt_rev2#$anchor_num\"",
" ONCLICK='anchor = $anchor_num'>$line</A> ";
$anchor_num++;
}
close(RCSDIFF);
print '</TD></TR></TABLE>';
print "</FORM></BODY>\n";
}
# Default tab width, although it's frequently 4.
my $tab_width = 8;
sub next_tab_stop {
my ($pos) = @_;
return int(($pos + $tab_width) / $tab_width) * $tab_width;
}
#
# Look for the magic emacs tab width comment, or for long lines with more
# than 4 leading tabs in more than 50% of the lines that start with a tab.
# In the latter case, set $tab_width to 4.
#
sub guess_tab_width {
my ($opt_file) = @_;
my ($found_tab_width) = 0;
my ($many_tabs, $any_tabs) = (0, 0);
open(RCSFILE, "$opt_file");
while (<RCSFILE>) {
if (/tab-width: (\d)/) {
$tab_width = $1;
$found_tab_width = 1;
last;
}
if (/^(\t+)/) {
$many_tabs++ if (length($1) >= 4);
$any_tabs++;
}
}
if (!$found_tab_width && $many_tabs > $any_tabs / 2) {
$tab_width = 4;
}
close(RCSFILE);
}
# Create gdiff-like output.
sub do_diff {
http_lastmod;
print "<HTML><HEAD>";
print "<TITLE>$opt_file: $opt_rev1 vs. $opt_rev2</TITLE>\n";
print "</HEAD>";
print "<BODY BGCOLOR=\"$diff_bg_color\" TEXT=\"#000000\"";
print " LINK=\"#0000EE\" VLINK=\"#551A8B\" ALINK=\"#FF0000\">";
CheckHidden("$dir/$opt_file");
chdir($dir);
my ($rcsfile) = "$opt_file,v";
$rcsfile = "Attic/$opt_file,v" if (! -r $rcsfile);
&guess_tab_width($rcsfile);
&html_diff($rcsfile, $opt_rev1, $opt_rev2);
print "\n</BODY>\n";
}
# Show specified CVS log entry.
sub do_log {
http_lastmod;
print "<TITLE>$opt_file: $opt_rev CVS log entry</TITLE>\n";
print '<PRE>';
CheckHidden("$dir/$opt_file");
chdir($dir);
open(RCSLOG, "rlog -r$opt_rev $opt_file |");
while (<RCSLOG>) {
last if (/^revision $opt_rev$/);
}
while (<RCSLOG>) {
last if (/^===============================================/);
print "$_<BR>";
}
close(RCSLOG);
print '</PRE>';
}
#
# Main script: generate a table of revision diff and log message hotlinks
# for each modified file in $opt_subdir, and a form for choosing a file and any
# two of its revisions.
#
sub do_directory {
print $request->header();
my $output = "<DIV ALIGN=LEFT>";
my $link_path = "";
foreach my $path (split('/',$opt_subdir)) {
$link_path .= $path;
$output .= "<A HREF='rview.cgi?dir=$link_path";
$output .= "&cvsroot=$opt_root" if defined $opt_root;
$output .= "&rev=$opt_branch" if $opt_branch;
$output .= "' onmouseover='window.status=\"Browse $link_path\";"
." return true;'>$path</A>/ ";
$link_path .= '/';
}
chop ($output);
if ($opt_branch) {
$output .= "<BR>Branch: $opt_branch";
}
$output .= "</DIV>";
PutsHeader("CVS Differences", $output);
CheckHidden($dir);
chdir($dir);
print "<TABLE BORDER CELLPADDING=2>\n";
foreach my $file (split(/\+/, $opt_files)) {
my ($path) = "$dir/$file,v";
CheckHidden($path);
$path = "$dir/Attic/$file,v" if (! -r $path);
&parse_rcs_file($path);
my $lxr_path = "$opt_subdir/$file";
my $lxr_link = Fix_LxrLink($lxr_path);
print "<TR><TD NOWRAP><B>";
print "<A HREF=\"$lxr_link\">$file</A><BR>";
print "<A HREF=\"cvslog.cgi?file=$opt_subdir/$file";
print "&rev=$opt_branch" if $opt_branch;
print "&root=$opt_root" if defined($opt_root);
print "\">Change Log</A></B></TD>\n";
my $first_rev;
if ($opt_branch) {
$first_rev = &map_tag_to_revision($opt_branch);
http_die("$0: error: -r: No such revision: $opt_branch\n")
if ($first_rev eq '');
} else {
$first_rev = $::head_revision;
}
my $skip = $opt_skip;
my $revs_remaining = $MAX_REVS;
my $prev;
for (my $rev = $first_rev; $rev; $rev = $prev) {
$prev = $::prev_revision{$rev};
next if $skip-- > 0;
if (!$revs_remaining--) {
#print '<TD ROWSPAN=2 VALIGN=TOP>';
print '<TD VALIGN=TOP>';
print "<A HREF=\"$magic_url&command=DIRECTORY";
print "&root=$opt_root" if defined($opt_root);
print "&files=$opt_files&branch=$opt_branch&skip=", $opt_skip + $MAX_REVS, "\"><i>Prior revisions</i></A>", "</TD>\n";
last;
}
my $href_open = "";
my $href_close = "";
if ( $prev && $rev ) {
$href_open = "<A HREF=\"$magic_url&command=DIFF_FRAMESET";
$href_open .= "&root=$opt_root" if defined($opt_root);
$href_open .= "&file=$file&rev1=$prev&rev2=$rev\">";
$href_close = "</A>";
}
print "<TD>$href_open$rev$href_close<BR>";
print "$::revision_author{$rev}</TD>";
}
print "</TR>\n";
if (0) {
print "<TR>\n";
$skip = $opt_skip;
$revs_remaining = $MAX_REVS;
for (my $rev = $first_rev; $rev; $rev = $::prev_revision{$rev}) {
next if $skip-- > 0;
last if !$revs_remaining--;
print "<TD><A HREF=\"$magic_url&command=LOG";
print "root=$opt_root" if defined($opt_root);
print "&file=$file&rev=$rev\">$::revision_author{$rev}</A>",
"</TD>\n";
}
print "</TR>\n";}
}
print "</TABLE><SPACER TYPE=VERTICAL SIZE=20>\n";
print '<FORM METHOD=get>';
print '<INPUT TYPE=hidden NAME=command VALUE=DIFF>';
print "<INPUT TYPE=hidden NAME=subdir VALUE=$opt_subdir>";
print '<FONT SIZE=+1><B>New Query:</B></FONT>';
print '<UL><TABLE BORDER=1 CELLSPACING=0 CELLPADDING=7><TR><TD>';
# pick something remotely sensible to put in the "Filename" field.
my $file = $opt_file;
unless (defined $opt_rev1) { $opt_rev1 = ''; }
unless (defined $opt_rev2) { $opt_rev2 = ''; }
if ( !$file && $opt_files ) {
$file = $opt_files;
$file =~ s@\+.*@@;
}
print "\n<TABLE CELLPADDING=0 CELLSPACING=0><TR><TD>\n",
'Filename:',
'</TD><TD>',
'<INPUT TYPE=text NAME=file VALUE="', $file, '" SIZE=40>',
"\n</TD></TR><TR><TD>\n",
'Old version:',
'</TD><TD>',
'<INPUT TYPE=text NAME=rev1 VALUE="', $opt_rev1, '" SIZE=20>',
"\n</TD></TR><TR><TD>\n",
'New version:',
'</TD><TD>',
'<INPUT TYPE=text NAME=rev2 VALUE="', $opt_rev2, '" SIZE=20>',
"\n</TD></TR></TABLE>\n";
print '<TABLE BORDER=0 CELLPADDING=5 WIDTH="100%"><TR><TD>',
'<INPUT TYPE=radio NAME=whitespace_mode VALUE="show" CHECKED>',
' Show Whitespace',
'<BR><INPUT TYPE=radio NAME=whitespace_mode VALUE="ignore">',
' Ignore Whitespace',
'</TD><TD>',
'<INPUT TYPE=radio NAME=diff_mode VALUE="context" CHECKED>',
' Context Diffs',
'<BR><INPUT TYPE=radio NAME=diff_mode VALUE="full">',
' Full Source Diffs';
print '</TD></TR></TABLE>';
print "<INPUT TYPE=submit>\n";
print '</TD></TR></TABLE></UL>';
print "</FORM>\n";
&print_bottom;
}
#
# This function generates a gdiff-style, side-by-side display using HTML.
# It requires two arguments, each of which must be an open filehandle.
# The first filehandle, DIFF, must be a `diff -f` style output containing
# commands to convert the contents of the second filehandle, OLDREV, into
# a later version of OLDREV's file.
#
sub html_diff {
my ($file, $rev1, $rev2) = @_;
my ($old_line_num) = 1;
my ($old_line);
my ($point, $mark);
open(DIFF, "$rcsdiff -f -r$rev1 -r$rev2 $file 2>/dev/null |");
open(OLDREV, "$cocommand -p$rev1 $file 2>/dev/null |");
$anchor_num = 0;
if ($ENV{'HTTP_USER_AGENT'} =~ /Win/) {
$font_tag = "<PRE><FONT FACE='Lucida Console' SIZE=-1>";
} else {
# We don't want your stinking Windows font
$font_tag = "<PRE>";
}
print "<TABLE BGCOLOR=$stable_bg_color "
.'CELLPADDING=0 CELLSPACING=0 WIDTH="100%" COLS=2>';
print "<TR BGCOLOR=$header_bg_color><TH>Version $rev1<TH>Version $rev2</TR>";
while (<DIFF>) {
$mark = 0;
if (/^a(\d+)/) {
$point = $1;
$old_line_num = skip_to_line($point + 1, $old_line_num);
while (<DIFF>) {
last if (/^\.$/);
&print_row('', $stable_bg_color, $_, $addition_bg_color);
}
} elsif ((($point, $mark) = /^c(\d+) (\d+)$/) ||
(($point) = /^c(\d+)$/)) {
$mark = $point if (!$mark);
$old_line_num = skip_to_line($point, $old_line_num);
while (<DIFF>) {
last if (/^\.$/);
if ($old_line_num <= $mark) {
$old_line = <OLDREV>;
$old_line_num++;
} else {
$old_line = ''
}
&print_row($old_line, $change_bg_color, $_, $change_bg_color);
}
while ($old_line_num <= $mark) {
$old_line = <OLDREV>;
$old_line_num++;
&print_row($old_line, $change_bg_color, '', $change_bg_color);
}
} elsif ((($point, $mark) = /^d(\d+) (\d+)$/) ||
(($point) = /^d(\d+)$/)) {
$mark = $point if (!$mark);
$old_line_num = skip_to_line($point, $old_line_num);
while (1) {
$old_line = <OLDREV>;
last unless defined $old_line;
$old_line_num++;
&print_row($old_line, $deletion_bg_color, '', $stable_bg_color);
last if ($. == $mark);
}
} else {
print "</TABLE><FONT SIZE=5 COLOR=#ffffff><B>Internal error:</B>",
" unknown command $_",
" at $. in $opt_file $opt_rev1\n";
exit;
}
}
#
# Print the remaining lines in the original file. These are lines that
# were not modified in the later revision
#
my ($base_old_line_num) = $old_line_num;
while (1) {
$old_line = <OLDREV>;
last unless defined $old_line;
$old_line_num++;
&print_row($old_line, $stable_bg_color, $old_line, $stable_bg_color)
if ($opt_diff_mode eq 'full' ||
$old_line_num <= $base_old_line_num + 5);
}
# print "</FONT></PRE>\n";
print "</TABLE></FONT>\n";
&print_bottom;
close(OLDREV);
close(DIFF);
}
sub skip_to_line {
my ($line_num, $old_line_num);
($line_num, $old_line_num) = @_;
my ($anchor_printed) = 0;
my ($skip_line_printed) = ($line_num - $old_line_num <= 10);
my ($base_old_line_num) = $old_line_num;
while ($old_line_num < $line_num) {
if (!$anchor_printed && $old_line_num >= $line_num - 10) {
print "<A NAME=$anchor_num>";
$anchor_printed = 1;
}
if ($opt_diff_mode eq 'context' && !$skip_line_printed &&
$line_num - 5 <= $old_line_num) {
print "</TABLE>";
print "<TABLE BGCOLOR=$stable_bg_color "
.'CELLPADDING=0 CELLSPACING=0 WIDTH="100%" COLS=2>';
print "<TR BGCOLOR=$skipping_bg_color><TD>",
"<B>Skipping to line $old_line_num:</B><TD>&nbsp;";
$skip_line_printed = 1;
}
my $old_line = <OLDREV>;
$old_line_num++;
&print_row($old_line, $stable_bg_color, $old_line, $stable_bg_color)
if ($opt_diff_mode eq 'full' ||
$old_line_num <= $base_old_line_num + 5 ||
$line_num - 5 < $old_line_num);
}
print "<A NAME=$anchor_num>" if (!$anchor_printed);
print '</A>';
$anchor_num++;
return $old_line_num;
}
sub print_cell {
my ($line, $color) = @_;
my ($i, $j, $k, $n);
my ($c, $newline);
if ($color eq $stable_bg_color) {
print "<TD>$font_tag";
} else {
print "<TD BGCOLOR=$color>$font_tag";
}
chomp $line;
$n = length($line);
$newline = '';
for ($i = $j = 0; $i < $n; $i++) {
$c = substr($line, $i, 1);
if ($c eq "\t") {
for ($k = &next_tab_stop($j); $j < $k; $j++) {
$newline .= ' ';
}
} else {
$newline .= $c;
$j++;
}
}
$newline =~ s/\s+$//;
if (length($newline) <= 80) {
$newline = sprintf("%-80.80s", $newline);
} else {
$newline =~ s/([^\n\r]{80})([^\n\r]*)/$1\n$2/g;
}
$newline =~ s/&/&amp;/g;
$newline =~ s/</&lt;/g;
$newline =~ s/>/&gt;/g;
print $newline;
}
sub print_row {
my ($line1, $color1, $line2, $color2) = @_;
print "<TR>";
$line1 = "" unless defined $line1;
$line2 = "" unless defined $line2;
&print_cell($line1, $color1);
&print_cell($line2, $color2);
}
sub print_bottom {
my $maintainer = Param('maintainer');
print <<__BOTTOM__;
<P>
<TABLE BORDER=0 CELLSPACING=0 CELLPADDING=0><TR><TD>
<HR>
<TR><TD>
<FONT SIZE=-1>
&nbsp;&nbsp;Mail feedback and feature requests to <A HREF="mailto:$maintainer?subject=About the cvs differences script">$maintainer</A>.&nbsp;&nbsp;
</TABLE>
</BODY>
</HTML>
__BOTTOM__
} # print_bottom
sub do_cmd {
if ($opt_command eq 'DIFF_FRAMESET') { do_diff_frameset; }
elsif ($opt_command eq 'DIFF_LINKS') { do_diff_links; }
elsif ($opt_command eq 'DIFF') { do_diff; }
elsif ($opt_command eq 'LOG') { do_log; }
elsif ($opt_command eq 'DIRECTORY') { do_directory; }
else { print "invalid command \"$opt_command\"."; }
exit;
}
do_cmd;
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