chore: write script to merge models into single file (#158)

Author: wooj2

scripts/mergeModels.sh

@@ -0,0 +1,57 @@
+#!/bin/bash
+
+usage() {
+    echo "Use case 1:"
+    echo " ./scripts/mergeModels release"
+    echo ""
+    echo "Use case 2: merge all in single directory if it has swift files"
+    echo " ./scripts/mergeModels codegen/sdk-codegen/build/smithyprojections/sdk-codegen/iam.2010-05-08/swift-codegen/IAM/models"
+}
+
+if [ $# -ne 1 ]; then
+    usage
+    exit 1
+fi
+
+RELDIR=$1
+if [ ! -d ${RELDIR} ]; then
+    echo "Not a directory: ${RELDIR}"
+    exit 1
+fi
+
+MODELS="Models.swift"
+
+mergeFiles() {
+    TEMP=`mktemp`
+    cat *.swift | grep -e "//\ Code\ generated" | sort | uniq >> ${TEMP}
+    cat *.swift | grep -e "^import\ " | sort | uniq  >> ${TEMP}
+    cat *.swift | grep -ve "^import\ " | grep -ve "//\ Code\ generated" >> ${TEMP}
+    rm -f *.swift
+    cat ${TEMP} | sed '/^$/N;/^\n$/D' > ${MODELS}
+}
+
+mergeFilesInReleaseDir() {
+    for sdk in `ls ${RELDIR}`; do
+	MODELDIR=${RELDIR}/${sdk}/models
+	if [ ! -d ${MODELDIR} ]; then
+	    echo "Bail, this directory does not seem right: ${MODELDIR}"
+	    exit 1
+	fi
+	pushd ${MODELDIR}    
+	if [ -f ${MODELS} ]; then
+	    echo "${sdk} has ${MODELS} already generated"
+	else
+	    mergeFiles
+	fi
+	popd
+    done
+}
+
+ls ${RELDIR}| grep -e "\.swift$" > /dev/null
+if [ $? -eq 0 ]; then
+    pushd ${RELDIR}
+    mergeFiles
+    popd
+else
+    mergeFilesInReleaseDir
+fi