adding jadmaker

shell/jadmaker.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+#
+# Given a J2ME midlet jarball, create a JAD for it
+# Usage: ./jadmaker.sh <filename>
+#
+# for ii in *.jar; do ./jadmaker.sh $ii; done;
+#
+# SPDX-License-Identifier: MIT
+
+FILE=$1
+if [ ! -f "${FILE}" ]; then
+  echo "Input file '${FILE}' missing, exiting."
+  exit 1
+fi
+
+JAD="${FILE%.*}.jad"
+if [ -f "${JAD}" ]; then
+  echo "${JAD} already exists, overwrite? (y/N)"
+  read -r tmpans
+  answer=$(echo "$tmpans" | tr '[:upper:]' '[:lower:]')
+  if [ "$answer" != "y" ] && [ "$answer" != "yes" ]; then
+    echo "Not overwriting ${JAD}, exiting."
+    exit 1
+  else
+    rm -f "${JAD}"
+  fi
+fi
+
+# unzip the internal manifest, changing line endings to our local OS
+# the sed action removes blank lines, with or without spaces/tabs
+unzip -aa -j -p "${FILE}" "META-INF/MANIFEST.MF" | sed -e '/^[ \t]*$/d' > "${JAD}"
+
+# generic variables
+echo "MIDlet-Jar-URL: ${FILE}" >> "${JAD}"
+echo "MIDlet-Info-URL: http://" >> "${JAD}"
+
+# actual jarball size
+FILESIZE=$(stat -c%s "${FILE}")
+echo "MIDlet-Jar-Size: ${FILESIZE}" >> "${JAD}"
+
+# weee
+echo "Created ${JAD}."
+exit 0