1 files changed, 74 insertions, 0 deletions
diff --git a/deploy/build_common.sh b/deploy/build_common.sh
new file mode 100644
index 0000000..acac5da
--- /dev/null
+++ b/deploy/build_common.sh
@@ -0,0 +1,74 @@
+#!/bin/bash
+
+set -e
+
+INDIR=
+OUTDIR=
+
+error() {
+    >&2 echo "error: $@"
+}
+
+warning() {
+    >&2 echo "warning: $@"
+}
+
+die() {
+    error "$@"
+    exit 1
+}
+
+usage() {
+    local code="$1"
+    cat <<EOF
+usage: $PROGNAME [OPTIONS]
+
+Options:
+    -o  output directory
+    -i  input directory
+    -h  show this help
+EOF
+    exit $code
+}
+
+input_args() {
+    [ -z "$1" ] && usage
+
+    while [[ $# -gt 0 ]]; do
+        case $1 in
+            -o)
+                OUTDIR="$2"
+                shift
+                ;;
+            -i)
+                INDIR="$2"
+                shift
+                ;;
+            -h)
+                usage
+                ;;
+            *)
+                die "unexpected argument: $1"
+                ;;
+        esac
+        shift
+    done
+}
+
+check_args() {
+    [ -z "$OUTDIR" ] && {
+        error "output directory not specified"
+        usage 1
+    }
+    [ -z "$INDIR" ] && {
+        error "input directory not specified"
+        usage 1
+    }
+
+    if [ ! -d "$OUTDIR" ]; then
+        mkdir "$OUTDIR"
+    else
+        warning "$OUTDIR already exists, erasing it"
+        rm "$OUTDIR"/*
+    fi
+}
+\ No newline at end of file