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#===----------------------------------------------------------------------===##
#
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#
#===----------------------------------------------------------------------===##
# Bash functions for managing the names of emulator system images.
# Parse the image name and set variables: API, TYPE, and ARCH.
__parse_emu_img() {
if [[ "${1}" =~ ([0-9]+)-(def|goog|play)-(arm|arm64|x86|x86_64)$ ]]; then
API=${BASH_REMATCH[1]}
case ${BASH_REMATCH[2]} in
def) TYPE=default ;;
goog) TYPE=google_apis ;;
play) TYPE=google_apis_playstore ;;
esac
ARCH=${BASH_REMATCH[3]}
return 0
else
return 1
fi
}
# Check that the emulator image name has valid syntax.
validate_emu_img_syntax() {
local EMU_IMG="${1}"
local API TYPE ARCH
if ! __parse_emu_img "${EMU_IMG}"; then
echo "\
error: invalid emulator image name: ${EMU_IMG}
expected \"\${API}-\${TYPE}-\${ARCH}\" where API is a number, TYPE is one of
(def|goog|play), and ARCH is one of arm, arm64, x86, or x86_64." >&2
return 1
fi
}
docker_image_of_emu_img() {
echo "android-emulator-${1}"
}
# Check that the emulator image name has valid syntax and that the Docker image
# is present. On failure, writes an error to stderr and exits the script.
validate_emu_img() {
local EMU_IMG="${1}"
if ! validate_emu_img_syntax "${EMU_IMG}"; then
return 1
fi
# Make sure Docker is working before trusting other Docker commands.
# Temporarily suppress command echoing so we only show 'docker info' output
# on failure, and only once.
if (set +x; !(docker info &>/dev/null || docker info)); then
echo "error: Docker is required for emulator usage but 'docker info' failed" >&2
return 1
fi
local DOCKER_IMAGE=$(docker_image_of_emu_img ${EMU_IMG})
if ! docker image inspect ${DOCKER_IMAGE} &>/dev/null; then
echo "error: emulator Docker image (${DOCKER_IMAGE}) is not installed" >&2
return 1
fi
}
api_of_emu_img() {
local API TYPE ARCH
__parse_emu_img "${1}"
echo ${API}
}
type_of_emu_img() {
local API TYPE ARCH
__parse_emu_img "${1}"
echo ${TYPE}
}
arch_of_emu_img() {
local API TYPE ARCH
__parse_emu_img "${1}"
echo ${ARCH}
}
# Expand the short emu_img string into the full SDK package string identifying
# the system image.
sdk_package_of_emu_img() {
local API TYPE ARCH
__parse_emu_img "${1}"
echo "system-images;android-${API};${TYPE};$(abi_of_arch ${ARCH})"
}
# Return the Android ABI string for an architecture.
abi_of_arch() {
case "${1}" in
arm) echo armeabi-v7a ;;
arm64) echo aarch64-v8a ;;
x86) echo x86 ;;
x86_64) echo x86_64 ;;
*) echo "error: unhandled arch ${1}" >&2; exit 1 ;;
esac
}
triple_of_arch() {
case "${1}" in
arm) echo armv7a-linux-androideabi ;;
arm64) echo aarch64-linux-android ;;
x86) echo i686-linux-android ;;
x86_64) echo x86_64-linux-android ;;
*) echo "error: unhandled arch ${1}" >&2; exit 1 ;;
esac
}
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