tools: add license boilerplate to check-imports.sh

tools/check-imports.sh

@@ -1,19 +1,36 @@
 #!/bin/sh
 
+# Copyright (c) 2013, 2014, Ben Noordhuis <info@bnoordhuis.nl>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
 SED=sed
 UNAME=`uname`
 
+FILES=$*
+if [ "$FILES" = "" ]; then
+  FILES=`dirname "$0"`/../src/*.cc
+fi
+
 if [ "$UNAME" = Darwin ] || [ "$UNAME" = FreeBSD ]; then
   SED=gsed
 fi
 
-cd `dirname "$0"`/../
-
-for FILE in src/*.cc; do
+for FILE in $FILES; do
   $SED -rne 's/^using (\w+::\w+);$/\1/p' $FILE | sort -c || echo "in $FILE"
 done
 
-for FILE in src/*.cc; do
+for FILE in $FILES; do
   for IMPORT in `$SED -rne 's/^using (\w+)::(\w+);$/\2/p' $FILE`; do
     if ! $SED -re '/^using (\w+)::(\w+);$/d' $FILE | grep -q "$IMPORT"; then
       echo "$IMPORT unused in $FILE"