1#!/bin/sh 2# Copyright 2020 The Pigweed Authors 3# 4# Licensed under the Apache License, Version 2.0 (the "License"); you may not 5# use this file except in compliance with the License. You may obtain a copy of 6# the License at 7# 8# https://www.apache.org/licenses/LICENSE-2.0 9# 10# Unless required by applicable law or agreed to in writing, software 11# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 12# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13# License for the specific language governing permissions and limitations under 14# the License. 15 16if [ -z "$PW_ENVIRONMENT_ROOT" ]; then 17 PW_ENVIRONMENT_ROOT="$PW_ROOT/.environment" 18fi 19PREFIX="$PW_ENVIRONMENT_ROOT/bootstrap" 20mkdir -p "$PREFIX" 21 22set -o errexit 23 24# Update the mtimes on the most recent pw_env_setup executables. 25for HASH in $(git --git-dir="$PW_ROOT/.git" --no-pager log --max-count=5 --format=format:%H); do 26 if [ -f "$PREFIX/$HASH" ]; then 27 touch "$PREFIX/$HASH" &> /dev/null 28 fi 29done 30 31# Delete any files with an (apparent) age greater than 5 days. This will never 32# include the 5 most recent pw_env_setup executables, but if there's been no 33# bootstrap call in less than 5 days this could delete all versions of 34# pw_env_setup. This is acceptable because it's very unlikely there have been 35# no commits in a 5 day period, and if there really have been no commits this 36# will just re-download that executable in a few lines. 37find "$PREFIX" -mtime +5 -exec rm {} \; 38 39OS=$(uname -s | tr '[:upper:]' '[:lower:]') 40if [ "$OS" = "darwin" ]; then 41 OS=mac 42fi 43 44ARCH=$(uname -m | tr '[:upper:]' '[:lower:]') 45if [ "$ARCH" = "x86_64" ]; then 46 ARCH="amd64" 47fi 48 49# Support `mac-arm64` through Rosetta until `mac-arm64` binaries are ready 50if [[ "$OS" = "mac" ] && [ "$ARCH" = "arm64" ]]; then 51 ARCH="amd64" 52fi 53 54for HASH in $(git --git-dir="$PW_ROOT/.git" --no-pager log --max-count=10 --format=format:%H); do 55 URL="https://storage.googleapis.com/pigweed-envsetup/$OS-$ARCH" 56 URL="$URL/$HASH/pw_env_setup" 57 FILEPATH="$PREFIX/$HASH" 58 59 # First try curl. 60 if [ ! -f "$FILEPATH" ]; then 61 curl -o "$FILEPATH" "$URL" &> /dev/null 62 fi 63 64 # If curl fails try wget. 65 if [ ! -f "$FILEPATH" ]; then 66 wget -O "$FILEPATH" "$URL" &> /dev/null 67 fi 68 69 # If either curl or wget succeeded mark the file executable, print it, and 70 # exit. If the file appears to be a text file then it doesn't exist in GCS 71 # and we'll try the next one. 72 TEXT=$(file --mime "$FILEPATH" | grep text) 73 if [ -n "$TEXT" ]; then 74 rm "$FILEPATH" 75 continue 76 fi 77 78 if [ -f "$FILEPATH" ]; then 79 chmod a+x "$FILEPATH" 80 echo "$FILEPATH" 81 exit 0 82 fi 83done 84 85exit -1 86