localworddiff



#!/bin/sh
#
# Copyright © 2013 Jonas Smedegaard <dr@jones.dk>
# Description: Generate word-based diff for console or web
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# Depends: libtext-worddiff-perl (>= 0.08), libtext-markdown-perl
#
# TODO: rewrite as Perl script, using HTML::HTML5::Builder

set -e

if [ -z "$3" ]; then
    perl -MText::WordDiff -E 'say word_diff "'"$1"'", "'"$2"'", { STYLE => 'ANSIColor' }'
    exit
fi

cat > "$3" <<EOF
<!DOCTYPE html>
<html>
<head>
<style>
.fileheader {
    display: none;
    visibility: hidden;
}
.file {
    float: left;
    width: 49%;
}
.file .hunk del,
.file .hunk ins {
    font-weight: bold;
    text-decoration: inherit;
}
.file .hunk del {
    color: darkred;
}
.file .hunk ins {
    color: darkgreen;
}

</style>
</head>
<body>
EOF
perl -MText::WordDiff -MText::Markdown=markdown -E '$d="<div class=\"file\">";$d_="<\/div>";foreach(split /(?:$d_\n)?$d/, word_diff "'"$1"'", "'"$2"'", { STYLE => "HTMLTwoLines" }){say $d.markdown($_).$d_ if ($_)}'>> "$3"
cat >> "$3" <<EOF
</body>
</html>
EOF