#!/bin/sh
THUMB_OPTS="-w 3 -d 60 -n 1,1,0"
shrink()
{
pnmscale -width 120 "$@" || exit
}
pngdiff()
{
# pngdiff preproc outfile arg ...
pp="$1"
of="$2"
shift 2
if ! PATH=$PATH:`dirname $0`/ppmdiff ppmdiff "$@" >"$out/_tmp"; then
rm "$out/_tmp"
return 1
fi
$pp "$out/_tmp" | pnmtopng >"$of"
rm -f "$out/_tmp"
}
usage()
{
echo "usage: $0 [top-dir] [top-schem] [outdir]" 2>&1
exit 1
}
if [ ! -z "$1" -a -d "$1/.git" ]; then
dir="$1"
shift
else
dir=.
while [ ! -d $dir/.git ]; do
if [ $dir -ef $dir/.. ]; then
echo "no .git/ directory found in hierarchy" 1>&2
exit 1
fi
dir=$dir/..
done
fi
if [ ! -z "$1" -a -f "$dir/$1" -a \
-f "$dir"/`dirname "$1"`/`basename "$1" .sch`.pro ]; then
sch="$1"
shift
else
for n in "$dir"/*.sch; do
[ -f `dirname "$n"`/`basename "$n" .sch`.pro ] || continue
if [ ! -z "$sch" ]; then
echo "multiple choices for top-level .sch file" 1>&2
exit 1
fi
sch="$n"
done
if [ -z "$sch" -o "$sch" = "$dir/*.sch" ]; then
echo "no candidate for top-level .sch file found" 1>&2
exit 1
fi
fi
if [ ! -z "$1" ] && [ ! -e "$1" ] || [ -d "$1" -a ! -d "$1"/.git ]; then
out="$1"
shift
else
out=_out
fi
[ -z "$1" ] || usage
PATH=`dirname "$0"`:"$PATH"
first=`gitenealogy "$dir/$sch" | sed '$s/ .*//p;d'`
schname=`gitenealogy "$dir/$sch" | sed '$s/^.* //p;d'`
# @@@ POOR MAN'S CACHE
if true; then
rm -rf "$out"
mkdir -p "$out/names"
for n in $first `git rev-list --reverse $first..HEAD`; do
echo Processing $n
new=`gitenealogy "$dir/$sch" | sed "/^$n /s///p;d"`
if [ ! -z "$new" ]; then
echo Name change $schname to $new
schname="$new"
fi
mkdir "$out/ppm_$n"
gitsch2ppm "$dir" "$schname" $n "$out/ppm_$n" || exit
gitsch2ppm -w 500 "$dir" "$schname" $n "$out/fat_$n" || exit
for m in "$out/ppm_$n/"*; do
[ "$m" = "$out/ppm_$n/*" ] && break
touch "$out/names/"`basename "$m" .ppm`
done
done
fi
cat <<EOF >"$out/index.html"
<HTML>
<BODY>
<TABLE bgcolor="#f0f0ff" callpadding=1>
<TR>
EOF
for m in `ls -1 "$out/names"`; do
echo "<TD><B>$m</B>" >>"$out/index.html"
done
head=`git rev-list HEAD~1..HEAD`
next="$head"
for n in `git rev-list $first..HEAD~1` $first; do
empty=true
s="<TR><TR>"
mkdir -p "$out/diff_$next" "$out/thumb_$next"
for m in `ls -1 "$out/names"`; do
a="$out/ppm_$n/$m.ppm"
fat_a="$out/fat_$n/$m.ppm"
b="$out/ppm_$next/$m.ppm"
fat_b="$out/fat_$next/$m.ppm"
diff="$out/diff_$next/$m.png"
thumb="$out/thumb_$next/$m.png"
if [ -f "$a" -a -f "$b" ]; then
s="$s<TD>"
pngdiff cat "$diff" "$a" "$b" || continue
pngdiff shrink "$thumb" -f $THUMB_OPTS "$fat_a" "$fat_b" || exit
elif [ -f "$a" ]; then
s="$s<TD>"
pngdiff cat "$diff" -f -c 1,0,0 "$a" "$a" || exit
pngdiff shrink "$thumb" -f -c 1,0,0 $THUMB_OPTS "$fat_a" "$fat_a" \
|| exit
elif [ -f "$out/$next/$m.ppm" ]; then
s="$s<TD>"
pngdiff cat "$diff" -f -c 0,1,0 "$b" "$b" || exit
pngdiff shrink "$thumb" -f -c 0,1,0 $THUMB_OPTS "$fat_b" "$fat_b" \
|| exit
else
s="$s<TD>"
continue
fi
echo "$s" >>"$out/index.html"
s=
empty=false
echo "<A href=\"diff_$next/$m.png\"><IMG src=\"thumb_$next/$m.png\"></A>" >>"$out/index.html"
done
if ! $empty; then
(
cat <<EOF
$s<TD valign="middle">
<TABLE bgcolor="#000000" cellspacing=0 width="100%"><TR><TD></TABLE>
EOF
mkdir -p "$out/diff_$next" "$out/thumb_$next"
echo "<PRE>"
git log --pretty=short $n..$next
echo "</PRE>"
) >>"$out/index.html"
fi
next=$n
done
echo "</TABLE>" >>"$out/index.html"
exit 1