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artempartemp
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add mason.sh
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‎scripts/mason.sh‎

Lines changed: 189 additions & 0 deletions
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#!/usr/bin/env bash
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# Mason Client Version 1.0.0
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# See below for `set -euo pipefail`
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# Print file + line number when not in CLI mode
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if [[ "$0" != "$BASH_SOURCE" ]]; then
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function mason_error {
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local _LINE _FN _FILE
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read _LINE _FN _FILE <<< "`caller 1`"
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if [ -t 1 ]; then
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>&2 echo -e "\033[1m\033[31m$@ in ${_FILE} on line ${_LINE}\033[0m"
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else
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>&2 echo "$@ in ${_FILE} on line ${_LINE}"
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fi
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}
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else
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function mason_error {
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if [ -t 1 ]; then
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>&2 echo -e "\033[1m\033[31m$@\033[0m"
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else
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>&2 echo "$@"
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fi
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}
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fi
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function mason_info {
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if [ -t 1 ]; then
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>&2 echo -e "\033[1m\033[36m$@\033[0m"
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else
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>&2 echo "$@"
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fi
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}
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function mason_detect_platform {
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# Determine platform
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if [[ -z "${MASON_PLATFORM:-}" ]]; then
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if [[ "`uname -s`" = 'Darwin' ]]; then
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MASON_PLATFORM="osx"
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else
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MASON_PLATFORM="linux"
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fi
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fi
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# Determine platform version string
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if [[ -z "${MASON_PLATFORM_VERSION:-}" ]]; then
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MASON_PLATFORM_VERSION="`uname -m`"
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fi
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}
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function mason_trim {
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local _TMP="${1#"${1%%[![:space:]]*}"}"
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echo -n "${_TMP%"${_TMP##*[![:space:]]}"}"
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}
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function mason_uppercase {
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echo -n "$1" | tr "[a-z]" "[A-Z]"
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}
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function mason_use {
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local _HEADER_ONLY=false _PACKAGE _SAFE_PACKAGE _VERSION _PLATFORM_ID _SLUG _INSTALL_PATH _INSTALL_PATH_RELATIVE
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while [[ $# -gt 0 ]]; do
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if [[ $1 == "--header-only" ]]; then
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_HEADER_ONLY=true
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elif [[ -z "${_PACKAGE:-}" ]]; then
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_PACKAGE="$1"
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elif [[ -z "${_VERSION:-}" ]]; then
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_VERSION="$1"
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else
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mason_error "[Mason] mason_use() called with unrecognized arguments: '$@'"
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exit 1
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fi
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shift
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done
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if [[ -z "${_PACKAGE:-}" ]]; then
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mason_error "[Mason] No package name given"
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exit 1
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fi
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# Create a package name that we can use as shell variable names.
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_SAFE_PACKAGE="${_PACKAGE//[![:alnum:]]/_}"
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if [[ -z "${_VERSION:-}" ]]; then
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mason_error "[Mason] Specifying a version is required"
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exit 1
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fi
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_PLATFORM_ID="${MASON_PLATFORM}-${MASON_PLATFORM_VERSION}"
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if [[ "${_HEADER_ONLY}" = true ]] ; then
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_PLATFORM_ID="headers"
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fi
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_SLUG="${_PLATFORM_ID}/${_PACKAGE}/${_VERSION}"
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_INSTALL_PATH="${MASON_PACKAGE_DIR}/${_SLUG}"
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_INSTALL_PATH_RELATIVE="${_INSTALL_PATH#`pwd`/}"
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if [[ ! -d "${_INSTALL_PATH}" ]]; then
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local _CACHE_PATH _URL _CACHE_DIR _ERROR
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_CACHE_PATH="${MASON_PACKAGE_DIR}/.binaries/${_SLUG}.tar.gz"
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if [ ! -f "${_CACHE_PATH}" ]; then
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# Download the package
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_URL="${MASON_REPOSITORY}/${_SLUG}.tar.gz"
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mason_info "[Mason] Downloading package ${_URL}..."
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_CACHE_DIR="`dirname "${_CACHE_PATH}"`"
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mkdir -p "${_CACHE_DIR}"
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if ! _ERROR=$(curl --retry 3 --silent --fail --show-error --location "${_URL}" --output "${_CACHE_PATH}.tmp" 2>&1); then
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mason_error "[Mason] ${_ERROR}"
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exit 1
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else
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# We downloaded to a temporary file to prevent half-finished downloads
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mv "${_CACHE_PATH}.tmp" "${_CACHE_PATH}"
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fi
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fi
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# Unpack the package
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mason_info "[Mason] Unpacking package to ${_INSTALL_PATH_RELATIVE}..."
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mkdir -p "${_INSTALL_PATH}"
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tar xzf "${_CACHE_PATH}" -C "${_INSTALL_PATH}"
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fi
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# Error out if there is no config file.
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if [[ ! -f "${_INSTALL_PATH}/mason.ini" ]]; then
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mason_error "[Mason] Could not find mason.ini for package ${_PACKAGE} ${_VERSION}"
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exit 1
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fi
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# We use this instead of declare, since it declare makes local variables when run in a function.
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read "MASON_PACKAGE_${_SAFE_PACKAGE}_PREFIX" <<< "${_INSTALL_PATH}"
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# Load the configuration from the ini file
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local _LINE _KEY _VALUE
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while read _LINE; do
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_KEY="`mason_trim "${_LINE%%=*}"`"
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if [[ "${_KEY}" =~ ^[a-z_]+$ ]]; then
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_KEY="`mason_uppercase "${_KEY}"`" # Convert to uppercase
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_LINE="${_LINE%%;*}" # Trim trailing comments
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_VALUE="`mason_trim "${_LINE#*=}"`"
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_VALUE="${_VALUE//\{prefix\}/${_INSTALL_PATH}}" # Replace {prefix}
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read "MASON_PACKAGE_${_SAFE_PACKAGE}_${_KEY}" <<< "${_VALUE}"
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fi
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done < "${_INSTALL_PATH}/mason.ini"
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# We're using the fact that this variable is declared to pass back the package name we parsed
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# from the argument string to avoid polluting the global namespace.
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if [ ! -z ${_MASON_SAFE_PACKAGE_NAME+x} ]; then
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_MASON_SAFE_PACKAGE_NAME="${_SAFE_PACKAGE}"
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fi
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}
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function mason_cli {
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local _MASON_SAFE_PACKAGE_NAME= _PROP _VAR
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if [[ $# -lt 1 ]]; then
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mason_error "[Mason] Usage: $0 <property> [--header-only] <name> <version>"
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mason_error "[Mason] <property> is one of 'include_dirs', 'definitions', 'options', 'ldflags', 'static_libs', or any custom variables in the package's mason.ini."
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exit 1
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fi
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# Store first argument and pass the remaining arguments to mason_use
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_PROP="`mason_uppercase "$1"`"
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shift
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mason_use "$@"
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# Optionally print variables
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_VAR="MASON_PACKAGE_${_MASON_SAFE_PACKAGE_NAME}_${_PROP}"
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if [[ ! -z "${!_VAR:-}" ]]; then
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echo "${!_VAR}"
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fi
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}
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# Directory where Mason packages are located; typically ends with mason_packages
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if [[ -z "${MASON_PACKAGE_DIR:-}" ]]; then
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MASON_PACKAGE_DIR="`pwd`/mason_packages"
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fi
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# URL prefix of where packages are located.
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if [[ -z "${MASON_REPOSITORY:-}" ]]; then
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MASON_REPOSITORY="https://mason-binaries.s3.amazonaws.com"
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fi
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mason_detect_platform
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# Print variables if this shell script is invoked directly.
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if [[ "$0" = "$BASH_SOURCE" ]]; then
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set -euo pipefail
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mason_cli "$@"
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fi

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