Copy only files that are needed into IP hdl package

This involves parsing the topfile of the package (as determined by the name of
the package) and copying only the 'included' files. The code to do this was
taken from my 'cpvdep' script found at my github account.

syn-proj-prep

@@ -23,6 +23,45 @@ Options:
 "
 }
 
+
+function included_files {
+	# limitations in regex, only one file name per include
+	# limitations in regex, file name cannot have double quote char
+
+	grep -o '^\s*`include\s*\".*\"' ${1} | awk -F\" '{print $(NF-1)}'
+}
+
+
+# argument assumed to be full path name
+function copy_with_dependencies {
+	# put file into set
+	fileset[$(basename ${1})]=${1}
+
+	# copy file to destination
+	cp -n "${1}" "${2}" || { echo "ERROR unable to copy file ${1}" ; exit 1; }
+
+	for file in $(included_files ${1})
+	do
+		# does the file exist in working dir
+		if [ ! -f ${file} ]
+		then
+			# find the first file that matches the name
+			file=$(find . -name ${file} -type f -print | head -n 1)
+
+			# zero length if file not found
+			test -z "${file}" && continue
+		fi
+
+		# checkout if file is in set that thus has been copied already
+		if [ ! ${fileset[$(basename ${file})]} ]
+		then :
+			# since has not been copied, call copy_with_dependencies on it
+			copy_with_dependencies ${file} ${2}
+		fi
+	done
+}
+
+
 function copy_for_synth() {
 	test -d syn/scratch/src || { echo "ERROR: directory 'syn/scratch/src' not found" ; exit 1; }
 
@@ -49,7 +88,22 @@ function copy_for_synth() {
 	test -d ip && { cp -r ip/* syn/scratch/; }
 
 	# populate IP Package hdl directories
-	test -d syn/scratch/ip_repo && { find syn/scratch/ip_repo -maxdepth 1 -mindepth 1 -type d | xargs -I D sh -c 'mkdir -p D/hdl; cp syn/scratch/src/* D/hdl/;'; }
+	if [ -d "syn/scratch/ip_repo" ]; then
+		cd syn/scratch
+
+		for PKG in ip_repo/*
+		do
+			declare -A fileset
+
+			mkdir -p "${PKG}"/hdl
+			TOPFILE=$(basename "${PKG%_1.0}").v
+			copy_with_dependencies "src/${TOPFILE}" "${PKG}/hdl/";
+
+			unset fileset
+		done
+
+		cd ../..
+	fi
 
 
 	echo "Source files copied to scratch directory"