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#!/bin/sh
#
# Script for screenshot report:
# - compares images in current dir to references images
# - reports images that are in reference subdir,
# but not in current dir and images for which
# there are no reference images.
#
# Copyright (C) 2012,2022 by Eero Tamminen <oak at helsinkinet fi>
#
# 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 2 of the License, 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.
if [ -z "$(ls ./*.png ./*.bmp 2>/dev/null)" ]; then
echo "ERROR: no screenshots!"
echo
echo "Run this from a directory with PNG/BMP screenshots"
echo "to get HTML report showing them, which of them differ"
echo "from the similarly named screenshots in 'reference'"
echo "directory etc."
exit 1
fi
report="screenshot-report.html"
refdir=reference
difdir=difference
title="Screenshot comparison report"
cat > $report << EOF
<html>
<title>$title</title>
<body>
<h1>$title</h1>
<p>Contents:
<ul>
<li><a href="#missing">Missing screenshots</a>
<li><a href="#mismatched">Mismatched screenshots</a>
<li><a href="#matching">Matching screenshots</a>
<li><a href="#new">New screenshots</a>
</ul>
EOF
get_name ()
{
name=$1
name=${name%.png}
name=${name%.bmp}
}
missing=""
mismatched=""
matching=""
new=""
# images in reference dir, but not in current one
for refimg in $(ls $refdir/*.png $refdir/*.bmp 2>/dev/null); do
img=${refimg##*/}
if [ ! -f "$img" ]; then
missing="$missing $img"
continue
fi
done
echo "<a name=missing></a><h2>Missing screenshots</h2>" >> $report
if [ -z "$missing" ]; then
echo "None." >> $report
else
echo "<ul>" >> $report
for img in $missing; do
get_name "$img"
echo "<li>$name" >> $report
done
echo "</ul>" >> $report
echo "Missing:"
echo "$missing"
fi
# images that don't match the references ones
for img in $(ls ./*.png ./*.bmp 2>/dev/null); do
refimg=$refdir/$img
if [ ! -f "$refimg" ]; then
new="$new $img"
continue
fi
if cmp "$img" "$refimg" > /dev/null; then
matching="$matching $img"
continue
fi
mismatched="$mismatched $img"
done
echo "<a name=mismatched></a><h2>Mismatched screenshots</h2>" >> $report
if [ -z "$mismatched" ]; then
echo "None." >> $report
else
echo "<p>Images which PNG/BMP screenshot file isn't exactly the same as the reference file" >> $report
echo "(the image content could still be identical although the files aren't, due to changes e.g. in compression)." >> $report
#echo "Left = new image, middle = difference, right = reference image:" >> $report
echo "<p>Left = new image, right = reference image:" >> $report
mkdir -p $difdir
for img in $mismatched; do
refimg=$refdir/$img
get_name "$img"
# disable compare usage, it gets stuck with TT mono images
#diff=$difdir/$name.png
#if compare "$img" "$refimg" "$diff"; then
# echo "<p><div align=center><img src=$img><img src=$diff><img src=$refimg><br>$name</div>" >> $report
#else
echo "<p><div align=center><img src=$img><img src=$refimg><br>$name</div>" >> $report
#fi
done
fi
echo "<a name=matching></a><h2>Matching screenshots</h2>" >> $report
if [ -z "$matching" ]; then
echo "None." >> $report
else
echo "<ul>" >> $report
for img in $matching; do
get_name "$img"
echo "<li>$name" >> $report
done
echo "</ul>" >> $report
fi
echo "<a name=new></a><h2>New screenshots</h2>" >> $report
if [ -z "$new" ]; then
echo "None." >> $report
else
msg="<p>These are candidates to be moved to the '$refdir' directory:"
echo "<p>$msg" >> $report
for img in $new; do
get_name "$img"
echo "<p><div><img src=$img alt=$img><br>$name</div>" >> $report
done
echo "$msg"
echo "$new"
fi
echo "</body></html>" >> $report
# show the report in the preferred HTMl viewer
xdg-open $report
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