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bin/qemush

@@ -0,0 +1,42 @@
+#!/usr/bin/env sh
+set -e
+
+# Invoked on termination if the last command failed
+error() { >&2 echo "$(basename "$0"): ${*}"; }
+error_envvar() { error "missing environment variable QEMUSH_NAME"; }
+error_arg() { error "invalid argument \"${*}\""; }
+
+# Assert that the QEMUSH_NAME variable is not null
+trap error_envvar EXIT
+[ -n "$QEMUSH_NAME" ]
+
+# Determine the base dir to use
+trap 'error_arg "$*"' EXIT
+case "$1" in
+    disk)
+        basedir=disks
+        extension=qcow2
+        ;;
+    socket)
+        basedir=sockets/monitors
+        ;;
+    spice)
+        basedir=sockets/spice
+        ;;
+    shared)
+        basedir=shared
+        ;;
+    *)
+        false
+        ;;
+esac
+
+# Release the trap
+trap - EXIT
+
+# Print the actual string
+basedir="${HOME}/${basedir}"
+name="$QEMUSH_NAME"
+[ -n "$2"         ] && name="${name}-${2}"
+[ -n "$extension" ] && extension=".${extension}"
+printf %s/%s%s\\n "$basedir" "$name" "$extension"