OpenSolaris_b135/tools/scripts/wdiff.pl
#!/usr/bin/perl -w
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# ident "%Z%%M% %I% %E% SMI"
#
# Copyright 2006 Sun Microsystems, Inc. All rights reserved.
# Use is subject to license terms.
#
# Make a dynamic HTML page for the unified diffs between two (C) files.
#
use Getopt::Std;
$diffword = "wdiff";
$context = 10;
getopt('t:c:');
if ($#ARGV + 1 == 1) {
$diffword = $ARGV[0];
open DIFF, "<&STDIN";
$ARGV[0] = '-';
$ARGV[1] = '-';
} elsif ($#ARGV + 1 == 2) {
open DIFF, "diff -D $diffword $ARGV[0] $ARGV[1] | expand |";
} else {
print "Usage: $0 [-t title] [-c comment] file1 file2\n";
exit 2;
}
$title = $opt_t ? $opt_t : "Differences between $ARGV[0] and $ARGV[1]";
$comment = "";
if (defined $opt_c) {
$comment = "<pre>\n" . $opt_c . "\n</pre>\n<hr />";
}
$indiff = 0;
$line1 = 0;
$line2 = 0;
@pretext = (); # Speculative pretext buffer (code)
$posttext = 0; # Lines of posttext to print
$nelided = 0; # Number of elided chunks
$endfunc = 0; # Seen end of function?
$inelided = 0; # Elided section open?
$elided_lines = 0;
print <<END;
<?xml version="1.0"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>$title</title>
<meta http-equiv="cache-control" content="no-cache" />
<style type='text/css' media='screen'>
pre { margin: 2px; }
body { background-color: #eeeeee; }
hr { border: none 0; border-top: 1px solid #aaa; height: 1px; }
.subtracted { color: brown }
.added { color: blue }
.elided { border: 1px solid #444; cursor: pointer; margin: 1px }
table.hidebar { border: 1px solid #ff9900; background-color: #eee;
text-align: center; border-collapse: collapse; }
.hidebar td.active-down { border: 1px solid #ff9900;
border-right: 1px solid #ccc; cursor: s-resize }
.hidebar td.active-down:hover { background-color: #ffcc99; }
.hidebar td.active-up { border: 1px solid #ff9900; cursor: n-resize;
border-left: 1px solid #ccc; }
.hidebar td.active-up:hover { background-color: #ffcc99; }
.hidebar td.elided-label { font-style: italic; width: 12em; }
.cmdbox { position: fixed; top: 0; right: 0;
border-left: solid 1px #444;
border-bottom: solid 1px #444;
background-color: #ccc; text-align: center }
.cmdbox td { background-color: #eee; border: 1px #444 outset;
cursor: pointer; padding: 3px 4px; }
.cmdbox td:hover { background-color: #ffcc99;
outline: thin solid #ff9900; }
a:hover { background-color: #ffcc99; }
a.print { font-size: x-small; }
</style>
<style type='text/css' media='print'>
pre { font-family: courier, monospace; font-size: 0.8em; }
.cmdbox { display: none; }
a.print { display: none; }
.hidebar td.active-down { display: none; }
.hidebar td.active-up { display: none; }
.hidebar td.elided-label { font-style: italic; font-size: small; }
table.hidebar { border: none; border-bottom: 1px dotted #000000; }
span.added { font-weight: bold;
background-color: #eee; width: 100%; display: block; }
span.subtracted { font-style: italic;
background-color: #eee; width: 100%; display: block; }
.elided { display: none; }
hr { border: none 0; border-top: 1px solid #aaa; height: 1px; }
</style>
<script type="text/javascript">
function show_n_hide_dir(id_to_show, id_to_hide, dir) {
var elt_to_show = document.getElementById(id_to_show);
var elt_to_hide = document.getElementById(id_to_hide);
// When we're opening up, we need to make the bottoms of the
// elements appear to be the same. So our invariant should be
// elt.offsetBottom - window.scrollY.
var preinvar = elt_to_hide.offsetHeight - window.scrollY;
elt_to_show.style.setProperty('display', '', '');
elt_to_hide.style.setProperty('display', 'none', '');
if (dir == 'up') {
var postinvar = elt_to_show.offsetHeight - window.scrollY;
window.scrollBy(0, postinvar - preinvar);
}
}
function handle_click(e) {
var eh = e.target;
var es = document.getElementById("hb-" + e.target.id);
eh.style.setProperty('display', 'none', '');
es.style.setProperty('display', '', '');
/* Scroll so new element is at cursor. */
window.scroll(0, es.offsetTop + (es.offsetHeight / 2)
- e.clientY);
}
function stripsearch(str) {
q = str.indexOf("?");
if (q != -1)
str = str.substr(0, q);
return (str);
}
function split() {
page = stripsearch(location.href);
halfway = window.scrollY + window.innerHeight / 2 - 5;
document.write('<frameset rows="50%,*">' +
'<frame src="' + page + "?" + window.scrollY + '" />' +
'<frame src="' + page + "?" + halfway + '" />' +
'</frameset>');
document.close();
}
function closeframe() {
page = stripsearch(location.href);
otherf = window.parent.frames[0];
if (otherf == window)
otherf = window.parent.frames[1];
parent.location.replace(page + "?" + otherf.scrollY);
}
</script>
</head>
<body id='SUNWwebrev'>
<a class="print" href="javascript:print()">Print this page</a>
$comment
<table class='cmdbox'>
<tr>
<td onclick='split()'>Split</td>
<td id='close' onclick='closeframe()'>Close</td>
</tr>
<tr><td colspan="2" onclick='open_or_close_all(1)'>Expand all</td></tr>
<tr><td colspan="2" onclick='open_or_close_all(0)'>Collapse all</td></tr>
</table>
<script type='text/javascript'>
if (window == top)
document.getElementById('close').style.setProperty('display', 'none', '');
</script>
END
print "<pre><span class='subtracted'> --- $ARGV[0]
</span><span class='added'> +++ $ARGV[1]
</span>";
sub begin_elided {
++$nelided;
# onclick handler assigned at bottom
print "<pre id='elided$nelided' class='elided' style='display: none'>";
$inelided = 1;
$elided_lines = 0;
}
sub end_elided {
print "</pre>\n";
print <<END;
<table id='hb-elided$nelided' class='hidebar'>
<tr>
<td class='active-down'
onclick='show_n_hide_dir("elided$nelided", "hb-elided$nelided", "down")'>
↓ open down ↓</td>
<td class="elided-label">$elided_lines lines elided</td>
<td class='active-up'
onclick='show_n_hide_dir("elided$nelided", "hb-elided$nelided", "up")'>
↑ open up ↑</td>
</tr>
</table>
END
$inelided = 0;
}
while (<DIFF>) {
chomp;
# Change detection
$previndiff = $indiff;
if (!$indiff) {
if (/^#ifdef $diffword$/) {
$indiff = 1;
} elsif (/^#ifndef $diffword$/) {
$indiff = -1;
}
} else {
if (/^#else \/\* $diffword \*\/$/) {
$indiff = -$indiff;
print "</span>";
printf "<span class='%s'>",
($indiff > 0 ? "added" : "subtracted");
next;
} elsif (/^#endif \/\* (! )?$diffword \*\/$/) {
$indiff = 0;
$posttext = $context;
print "</span>";
next;
}
}
if (!$previndiff && $indiff) {
# Beginning of a change: If we have an elided section open,
# end it. Print the pretext and continue.
if ($inelided) {
end_elided;
print "<pre>";
}
print @pretext;
@pretext = ();
$endfunc = 0;
printf "<span class='%s'>",
($indiff > 0 ? "added" : "subtracted");
next;
}
# Line of code
# Quote for HTML
s/&/&/g;
s/</</g;
s/>/>/g;
# Format the line according to $indiff, and print it or put it into
# a buffer.
if ($indiff == -1) {
++$line1;
printf "%4d %4s -%s\n", $line1, "", $_;
} elsif ($indiff == 0) {
++$line1;
++$line2;
$str = sprintf "%4d %4d %s\n", $line1, $line2, $_;
if ($posttext > 0) {
print $str;
--$posttext;
} else {
push @pretext, $str;
if ($#pretext + 1 > $context) {
$str = shift @pretext;
if (!$inelided) {
print "</pre>\n";
begin_elided;
}
++$elided_lines;
print $str;
}
}
} elsif ($indiff == 1) {
++$line2;
printf "%4s %4d +%s\n", "", $line2, $_;
}
}
print @pretext;
if ($inelided) {
$elided_lines += @pretext;
end_elided;
} else {
print " </pre>\n";
}
print "<pre id='linerefpre'><span id='lineref'>", 'X' x (4 + 1 + 4 + 2 + 80),
"</span></pre>\n";
print <<END;
<br clear="all" />
<br />
<script type="text/javascript">
/* Assign event handlers and widths. */
var w = document.getElementById('lineref').offsetWidth;
for (var i = 1; i <= $nelided; ++i) {
var e = document.getElementById("elided" + i);
e.onclick = handle_click;
e.style.setProperty('width', w + "px", '');
e = document.getElementById("hb-elided" + i);
e.style.setProperty('width', w + "px", '');
}
/* Hide our line size reference. */
document.getElementById('linerefpre').style.setProperty('display',
'none', '');
/* Scroll as indicated. */
str = location.search;
s = str.substring(1, str.length);
if (s > 0)
window.scroll(0, s);
function open_or_close_all(open) {
for (var i = 1; i <= $nelided; ++i) {
var e = document.getElementById("hb-elided" + i);
e.style.setProperty("display", open ? "none" : "", "");
e = document.getElementById("elided" + i);
e.style.setProperty("display", open ? "" : "none", "");
}
}
</script>
</body>
</html>
END