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#!/bin/sh
#
# Copyright (c) Josef "Jeff" Sipek, 2007-2013
#
USAGE="[-x exclude-pattern]... [<patchname>]"
if [ -z "$GUILT_VERSION" ]; then
echo "Invoking `basename "$0"` directly is no longer supported." >&2
exit 1
fi
_main() {
cache="$GUILT_DIR/$branch/.graphcache.$$"
xclude="$GUILT_DIR/$branch/.graphexclude.$$"
trap "rm -rf \"$cache\" \"$xclude\"" 0
mkdir "$cache"
>"$xclude"
while [ $# -gt 0 ]; do
if [ "$1" = "-x" ] && [ $# -ge 2 ]; then
echo "$2" >> "$xclude"
shift
shift
else
break
fi
done
if [ $# -gt 1 ]; then
usage
fi
patchname="$1"
bottompatch=$(head_n 1 < "$applied")
if [ -z "$bottompatch" ]; then
echo "No patch applied." >&2
exit 1
fi
base=`git rev-parse "refs/patches/${branch}/${bottompatch}^"`
if [ -z "$patchname" ]; then
top=`git rev-parse HEAD`
else
top=`grep "^$patchname$" "$applied"`
if [ -z "$top" ]; then
die "Cannot find patch '$patchname'. Is it applied?"
fi
fi
getfiles()
{
git diff-tree -r "$1^" "$1" | cut -f2
}
disp "digraph G {"
current="$top"
safebranch=`echo "$branch"|sed 's%/%\\\\/%g'`
while [ "$current" != "$base" ]; do
pname=`git show-ref | sed -n -e "
/^$current refs\/patches\/$safebranch/ {
s:^$current refs/patches/$branch/::
p
q
}"`
[ -z "$pname" ] && pname="?"
pname="`printf \"%s\" \"$pname\" | sed 's/\"/\\\\\"/g'`"
disp "# checking rev $current"
disp " \"$current\" [label=\"$pname\"]"
# new "hash table"
rm -f "$cache/dep"
touch "$cache/dep"
getfiles $current | grep -v -f "$xclude" | while read f; do
# hash the filename
fh=`echo "$f" | sha1 | cut -d' ' -f1`
if [ -e "$cache/$fh" ]; then
# ok, something already touched this file before us
cat "$cache/$fh" >> "$cache/dep"
fi
echo "$current" > "$cache/$fh"
done
sort -u "$cache/dep" | while read h; do
disp " \"$h\" -> \"$current\"; // ?"
done
current=`git rev-parse $current^`
done
disp "}"
}
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