platform_tools/android/bin/utils/setup_adb.sh

# Copyright 2015 Google Inc.
#
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

UTIL_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

if [ $PYADB ] && [ -a "$PYADB" ]; then
  echo "Python ADB detected, going to use that"
  ADB="python ${PYADB}"
  return
fi

if [ "$(which adb)" != "" ]; then
    ADB="$(which adb)"
elif [ -d "$ANDROID_SDK_ROOT" ]; then
    ADB="${ANDROID_SDK_ROOT}/platform-tools/adb"
else
  echo $ANDROID_SDK_ROOT
  echo "No ANDROID_SDK_ROOT set (check that android_setup.sh was properly sourced)"
  exit 1
fi

if [ ! -x $ADB ]; then
  echo "The adb binary is not executable"
  exit 1
fi

if [ $(uname) == "Linux" ]; then
  ADB_REQUIRED="1.0.32 or 1.0.35"
elif [ $(uname) == "Darwin" ]; then
  ADB_REQUIRED="1.0.31 or 1.0.32"
fi

# get the version string as an array, use just the version numbers
ADB_VERSION="$($ADB version)"
ADB_VERSION=($ADB_VERSION)
ADB_VERSION=${ADB_VERSION[4]}

if [[ "$ADB_REQUIRED" != *"$ADB_VERSION"* ]]; then
  echo "WARNING: Your ADB version is out of date!"
  echo "  Expected ADB Version: ${ADB_REQUIRED}"
  echo "  Actual ADB Version: ${ADB_VERSION}"
fi