#!/bin/ksh -p
#
# 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
#
# Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
# Use is subject to license terms.
#
# This script takes a file list and a workspace and builds a set of html files
# suitable for doing a code review of source changes via a web page.
# Documentation is available via 'webrev -h'.
#
WEBREV_UPDATED=25.1-hg+openjdk.java.net
HTML='
\n'
FRAMEHTML='
\n'
STDHEAD='
'
#
# UDiffs need a slightly different CSS rule for 'new' items (we don't
# want them to be bolded as we do in cdiffs or sdiffs).
#
UDIFFCSS='
'
#
# input_cmd | html_quote | output_cmd
# or
# html_quote filename | output_cmd
#
# Make a piece of source code safe for display in an HTML block.
#
html_quote()
{
sed -e "s/&/\&/g" -e "s/&#\([x]*[0-9A-Fa-f]\{2,5\}\);/\&#\1;/g" -e "s//\>/g" "$@" | expand
}
#
# input_cmd | html_quote | output_cmd
# or
# html_dequote filename | output_cmd
#
# Replace HTML entities with literals
#
html_dequote()
{
sed -e "s/"/\"/g" -e "s/'/\'/g" -e "s/&/\&/g" -e "s/</<'/g" -e "s/>/>/g" "$@" | expand
}
#
# input_cmd | bug2url | output_cmd
#
# Scan for bugids and insert links to the relevent bug database.
#
bug2url()
{
sed -e 's|[0-9]\{5,\}|&|g'
}
#
# strip_unchanged | output_cmd
#
# Removes chunks of sdiff documents that have not changed. This makes it
# easier for a code reviewer to find the bits that have changed.
#
# Deleted lines of text are replaced by a horizontal rule. Some
# identical lines are retained before and after the changed lines to
# provide some context. The number of these lines is controlled by the
# variable C in the $AWK script below.
#
# The script detects changed lines as any line that has a "
"
inx = c % C
c = C
}
for (i = 0; i < c; i++)
print ln[(inx + i) % C]
}
c = 0;
print
next
}
{ if (c >= C) {
ln[c % C] = $0
c++;
next;
}
c++;
print
}
END { if (c > (C * 2)) print "\n
" }
' $1
}
#
# sdiff_to_html
#
# This function takes two files as arguments, obtains their diff, and
# processes the diff output to present the files as an HTML document with
# the files displayed side-by-side, differences shown in color. It also
# takes a delta comment, rendered as an HTML snippet, as the third
# argument. The function takes two files as arguments, then the name of
# file, the path, and the comment. The HTML will be delivered on stdout,
# e.g.
#
# $ sdiff_to_html old/usr/src/tools/scripts/webrev.sh \
# new/usr/src/tools/scripts/webrev.sh \
# webrev.sh usr/src/tools/scripts \
# '
# JDK-1234567 my bugid' > .html
#
# framed_sdiff() is then called which creates $2.frames.html
# in the webrev tree.
#
# FYI: This function is rather unusual in its use of awk. The initial
# diff run produces conventional diff output showing changed lines mixed
# with editing codes. The changed lines are ignored - we're interested in
# the editing codes, e.g.
#
# 8c8
# 57a61
# 63c66,76
# 68,93d80
# 106d90
# 108,110d91
#
# These editing codes are parsed by the awk script and used to generate
# another awk script that generates HTML, e.g the above lines would turn
# into something like this:
#
# BEGIN { printf "\n" }
# function sp(n) {for (i=0;i%4d %s \n", n, NR, $0}
# NR==8 {wl("#7A7ADD");next}
# NR==54 {wl("#7A7ADD");sp(3);next}
# NR==56 {wl("#7A7ADD");next}
# NR==57 {wl("black");printf "\n"; next}
# : :
#
# This script is then run on the original source file to generate the
# HTML that corresponds to the source file.
#
# The two HTML files are then combined into a single piece of HTML that
# uses an HTML table construct to present the files side by side. You'll
# notice that the changes are color-coded:
#
# black - unchanged lines
# blue - changed lines
# bold blue - new lines
# brown - deleted lines
#
# Blank lines are inserted in each file to keep unchanged lines in sync
# (side-by-side). This format is familiar to users of sdiff(1) or
# Teamware's filemerge tool.
#
sdiff_to_html()
{
diff -b $1 $2 > /tmp/$$.diffs
TNAME=$3
TPATH=$4
COMMENT=$5
#
# Now we have the diffs, generate the HTML for the old file.
#
$AWK '
BEGIN {
printf "function sp(n) {for (i=0;i%%4d %%s\\n\", NR, $0}\n"
printf "function changed() "
printf "{printf \"%%4d %%s\\n\", NR, $0}\n"
printf "function bl() {printf \"%%4d %%s\\n\", NR, $0}\n"
}
/^/ {next}
/^---/ {next}
{
split($1, a, /[cad]/) ;
if (index($1, "a")) {
if (a[1] == 0) {
n = split(a[2], r, /,/);
if (n == 1)
printf "BEGIN\t\t{sp(1)}\n"
else
printf "BEGIN\t\t{sp(%d)}\n",\
(r[2] - r[1]) + 1
next
}
printf "NR==%s\t\t{", a[1]
n = split(a[2], r, /,/);
s = r[1];
if (n == 1)
printf "bl();printf \"\\n\"; next}\n"
else {
n = r[2] - r[1]
printf "bl();sp(%d);next}\n",\
(r[2] - r[1]) + 1
}
next
}
if (index($1, "d")) {
n = split(a[1], r, /,/);
n1 = r[1]
n2 = r[2]
if (n == 1)
printf "NR==%s\t\t{removed(); next}\n" , n1
else
printf "NR==%s,NR==%s\t{removed(); next}\n" , n1, n2
next
}
if (index($1, "c")) {
n = split(a[1], r, /,/);
n1 = r[1]
n2 = r[2]
final = n2
d1 = 0
if (n == 1)
printf "NR==%s\t\t{changed();" , n1
else {
d1 = n2 - n1
printf "NR==%s,NR==%s\t{changed();" , n1, n2
}
m = split(a[2], r, /,/);
n1 = r[1]
n2 = r[2]
if (m > 1) {
d2 = n2 - n1
if (d2 > d1) {
if (n > 1) printf "if (NR==%d)", final
printf "sp(%d);", d2 - d1
}
}
printf "next}\n" ;
next
}
}
END { printf "{printf \"%%4d %%s\\n\", NR, $0 }\n" }
' /tmp/$$.diffs > /tmp/$$.file1
#
# Now generate the HTML for the new file
#
$AWK '
BEGIN {
printf "function sp(n) {for (i=0;i%%4d %%s\\n\", NR, $0}\n"
printf "function changed() "
printf "{printf \"%%4d %%s\\n\", NR, $0}\n"
printf "function bl() {printf \"%%4d %%s\\n\", NR, $0}\n"
}
/^/ {next}
/^---/ {next}
{
split($1, a, /[cad]/) ;
if (index($1, "d")) {
if (a[2] == 0) {
n = split(a[1], r, /,/);
if (n == 1)
printf "BEGIN\t\t{sp(1)}\n"
else
printf "BEGIN\t\t{sp(%d)}\n",\
(r[2] - r[1]) + 1
next
}
printf "NR==%s\t\t{", a[2]
n = split(a[1], r, /,/);
s = r[1];
if (n == 1)
printf "bl();printf \"\\n\"; next}\n"
else {
n = r[2] - r[1]
printf "bl();sp(%d);next}\n",\
(r[2] - r[1]) + 1
}
next
}
if (index($1, "a")) {
n = split(a[2], r, /,/);
n1 = r[1]
n2 = r[2]
if (n == 1)
printf "NR==%s\t\t{new() ; next}\n" , n1
else
printf "NR==%s,NR==%s\t{new() ; next}\n" , n1, n2
next
}
if (index($1, "c")) {
n = split(a[2], r, /,/);
n1 = r[1]
n2 = r[2]
final = n2
d2 = 0;
if (n == 1) {
final = n1
printf "NR==%s\t\t{changed();" , n1
} else {
d2 = n2 - n1
printf "NR==%s,NR==%s\t{changed();" , n1, n2
}
m = split(a[1], r, /,/);
n1 = r[1]
n2 = r[2]
if (m > 1) {
d1 = n2 - n1
if (d1 > d2) {
if (n > 1) printf "if (NR==%d)", final
printf "sp(%d);", d1 - d2
}
}
printf "next}\n" ;
next
}
}
END { printf "{printf \"%%4d %%s\\n\", NR, $0 }\n" }
' /tmp/$$.diffs > /tmp/$$.file2
#
# Post-process the HTML files by running them back through $AWK
#
html_quote < $1 | $AWK -f /tmp/$$.file1 > /tmp/$$.file1.html
html_quote < $2 | $AWK -f /tmp/$$.file2 > /tmp/$$.file2.html
#
# Now combine into a valid HTML file and side-by-side into a table
#
print "$HTML$STDHEAD"
print "$WNAME Sdiff $TPATH "
print ""
print "$TPATH/$TNAME
"
print "Print this page"
print "$COMMENT
\n"
print ""
print ""
strip_unchanged /tmp/$$.file1.html
print " | "
strip_unchanged /tmp/$$.file2.html
print " | "
print "
"
print ""
framed_sdiff $TNAME $TPATH /tmp/$$.file1.html /tmp/$$.file2.html \
"$COMMENT"
}
#
# framed_sdiff
#
# Expects lefthand and righthand side html files created by sdiff_to_html.
# We use insert_anchors() to augment those with HTML navigation anchors,
# and then emit the main frame. Content is placed into:
#
# $WDIR/DIR/$TNAME.lhs.html
# $WDIR/DIR/$TNAME.rhs.html
# $WDIR/DIR/$TNAME.frames.html
#
# NOTE: We rely on standard usage of $WDIR and $DIR.
#
function framed_sdiff
{
typeset TNAME=$1
typeset TPATH=$2
typeset lhsfile=$3
typeset rhsfile=$4
typeset comments=$5
typeset RTOP
# Enable html files to access WDIR via a relative path.
RTOP=$(relative_dir $TPATH $WDIR)
# Make the rhs/lhs files and output the frameset file.
print "$HTML$STDHEAD" > $WDIR/$DIR/$TNAME.lhs.html
cat >> $WDIR/$DIR/$TNAME.lhs.html <<-EOF
$comments
EOF
cp $WDIR/$DIR/$TNAME.lhs.html $WDIR/$DIR/$TNAME.rhs.html
insert_anchors $lhsfile >> $WDIR/$DIR/$TNAME.lhs.html
insert_anchors $rhsfile >> $WDIR/$DIR/$TNAME.rhs.html
close=''
print $close >> $WDIR/$DIR/$TNAME.lhs.html
print $close >> $WDIR/$DIR/$TNAME.rhs.html
print "$FRAMEHTML$STDHEAD" > $WDIR/$DIR/$TNAME.frames.html
print "$WNAME Framed-Sdiff " \
"$TPATH/$TNAME " >> $WDIR/$DIR/$TNAME.frames.html
cat >> $WDIR/$DIR/$TNAME.frames.html <<-EOF