pre-commit hook no longer generates patch; it fails if patch.ips is o…

…ut of date.

.gitignore

@@ -1,2 +1,4 @@
 base.nes
+working.nes
 edit.nes
+.patch-prev.ips

hooks/pre-commit

@@ -19,12 +19,29 @@ then
 fi
 
 # generate patch
-./make-patch.sh
+./make-patch.sh .patch-prev.ips
 
-# pause to read input if successful:
-if [ $? -eq 0 ]
+if [ ! $? -eq 0 ]
 then
-  sleep 0.5
+  chmod +wrx .patch-prev.ips
+  rm .patch-prev.ips
+  exit 2;
 fi
 
-exit $?
+test=`diff patch.ips .patch-prev.ips`
+
+chmod +wrx .patch-prev.ips
+rm .patch-prev.ips
+
+if [ ! -z test ]
+then
+  echo "Cannot commit while patch.ips is not up-to-date!"
+  echo "(Either run ./apply.sh to bring patch.ips up to date, or commit again with --no-verify)"
+  exit 1;
+fi
+
+# pause to read input if successful:
+sleep 0.5
+
+exit 0
+

make-patch.sh

@@ -3,6 +3,11 @@
 
 # find flips patcher:
 flips="./flips/flips.exe"
+outdir="patch.ips"
+if [ $# -eq 1 ]
+then
+  outdir="$1"
+fi
 
 if [ "$op" = "Linux" ]
 then
@@ -15,16 +20,16 @@ then
     exit 2;
 fi
 
-echo "Generating patch.ips..."
+echo "Generating $outdir..."
 
-chmod u+w patch.ips
+chmod u+w $outdir 2>/dev/null
 
-rm patch.ips
+rm $outdir 2>/dev/null
 
-$flips --create --ips base.nes working.nes patch.ips
+$flips --create --ips base.nes working.nes $outdir
 err=$?
 
-chmod u+r patch.ips
-chmod a-wx patch.ips
+chmod u+r $outdir
+chmod a-wx $outdir
 
 exit $?