development tools: add script to setup new decoder

Simplify creation of a new decoder.

scripts/setup_decoder.sh

@@ -0,0 +1,85 @@
+#!/bin/bash
+#
+# Script to setup a new decoder.
+# Written by Victor Julien <victor@inliniac.net>
+#
+
+set -e
+#set -x
+
+function Usage {
+    echo
+    echo "$(basename $0) -- script to provision a decoder. The script"
+    echo "makes a copy of the decode-template, sets the name and updates"
+    echo " the build system."
+    echo
+    echo "Call from the 'src' directory, with one argument: the decoder name."
+    echo
+    echo "E.g. inside 'src': ../scripts/$(basename $0) ipv7"
+    echo
+}
+
+function Done {
+    echo
+    echo "Decoder $NR has been set up in $FILE_C and $FILE_H and the"
+    echo "build system has been updated."
+    echo
+    echo "The decoder should now compile cleanly. Try running 'make'."
+    echo
+    echo "Next steps are to edit the files to implement the actual"
+    echo "decoding of $NR."
+    echo
+}
+
+if [ $# -ne "1" ]; then
+    Usage
+    echo "ERROR: call with one argument"
+    exit 1
+fi
+
+INPUT=$1
+# lowercase
+LC=${INPUT,,}
+#echo $LC
+# UPPERCASE
+UC=${LC^^}
+#echo $UC
+# Normal
+NR=${LC^}
+#echo $NR
+
+FILE_C="decode-${LC}.c"
+FILE_H="decode-${LC}.h"
+#echo $FILE_C
+#echo $FILE_H
+
+if [ ! -e ../configure.ac ] || [ ! -e Makefile.am ]; then
+    Usage
+    echo "ERROR: call from src/ directory"
+    exit 1
+fi
+if [ ! -e decode-template.c ] || [ ! -e decode-template.h ]; then
+    Usage
+    echo "ERROR: input files decode-template.c and/or decode-template.h are missing"
+    exit 1
+fi
+if [ -e $FILE_C ] || [ -e $FILE_H ]; then
+    Usage
+    echo "ERROR: file(s) $FILE_C and/or $FILE_H already exist, won't overwrite"
+    exit 1
+fi
+
+cp decode-template.c $FILE_C
+cp decode-template.h $FILE_H
+
+# search and replaces
+sed -i "s/TEMPLATE/${UC}/g" $FILE_C
+sed -i "s/TEMPLATE/${UC}/g" $FILE_H
+sed -i "s/Template/${NR}/g" $FILE_C
+sed -i "s/Template/${NR}/g" $FILE_H
+sed -i "s/template/${LC}/g" $FILE_C
+sed -i "s/template/${LC}/g" $FILE_H
+sed -i "s/decode-template.c decode-template.h \\\/decode-template.c decode-template.h \\\\\n${FILE_C} ${FILE_H} \\\/g" Makefile.am
+
+Done
+exit 0