1 files changed, 63 insertions, 0 deletions
diff --git a/src/arrow/cpp/thirdparty/download_dependencies.sh b/src/arrow/cpp/thirdparty/download_dependencies.sh
new file mode 100755
index 000000000..7ffffa08c
--- /dev/null
+++ b/src/arrow/cpp/thirdparty/download_dependencies.sh
@@ -0,0 +1,63 @@
+#!/usr/bin/env bash
+
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# This script downloads all the thirdparty dependencies as a series of tarballs
+# that can be used for offline builds, etc.
+
+set -eu
+
+SOURCE_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+if [ "$#" -ne 1 ]; then
+  DESTDIR=$(pwd)
+else
+  DESTDIR=$1
+fi
+
+DESTDIR=$(readlink -f "${DESTDIR}")
+
+download_dependency() {
+  local url=$1
+  local out=$2
+
+  wget --quiet --continue --output-document="${out}" "${url}" || \
+    (echo "Failed downloading ${url}" 1>&2; exit 1)
+}
+
+main() {
+  mkdir -p "${DESTDIR}"
+
+  # Load `DEPENDENCIES` variable.
+  source ${SOURCE_DIR}/versions.txt
+
+  echo "# Environment variables for offline Arrow build"
+  for ((i = 0; i < ${#DEPENDENCIES[@]}; i++)); do
+    local dep_packed=${DEPENDENCIES[$i]}
+
+    # Unpack each entry of the form "$home_var $tar_out $dep_url"
+    IFS=" " read -r dep_url_var dep_tar_name dep_url <<< "${dep_packed}"
+
+    local out=${DESTDIR}/${dep_tar_name}
+    download_dependency "${dep_url}" "${out}"
+
+    echo "export ${dep_url_var}=${out}"
+  done
+}
+
+main