add script to prepare changed files with astyle for commit

git-svn-id: http://svn.osgeo.org/qgis/trunk@9149 c8812cc2-4d05-0410-92ff-de0c093fc19c

scripts/prepare-commit.sh

@@ -0,0 +1,54 @@
+#!/bin/bash
+
+if ! [ -x astyle.sh ]; then
+	PATH=$PATH:$(dirname $0)
+fi
+
+set -e
+
+# determine changed files
+MODIFIED=$(svn status | sed -ne "s/^[MA] *//p")
+
+if [ -z "$MODIFIED" ]; then
+	echo nothing was modified
+	exit 1
+fi
+
+# save original changes
+REV=$(svn info | sed -ne "s/Revision: //p")
+svn diff >r$REV.diff
+
+ASTYLEDIFF=astyle.r$REV.diff
+>$ASTYLEDIFF
+
+# reformat
+for f in $MODIFIED; do
+	case "$f" in
+        *.cpp|*.h|*.c|*.h|*.cxx|*.hxx|*.c++|*.h++|*.cc|*.hh|*.C|*.H)
+                ;;
+
+        *)
+                continue
+                ;;
+        esac
+
+        m=$f.r$REV.prepare
+
+	cp $f $m
+	astyle.sh $f
+	if diff -u $m $f >>$ASTYLEDIFF; then
+		# no difference found
+		rm $m
+	fi
+done
+
+if [ -s "$ASTYLEDIFF" ]; then
+	if tty -s; then
+		# review astyle changes
+		colordiff <$ASTYLEDIFF | less -r
+	else
+		echo "Files changed (see $ASTYLEDIFF)"
+	fi
+else
+	rm $ASTYLEDIFF
+fi