|  | # Copyright 2015 The Crashpad Authors. All rights reserved. | 
|  | # | 
|  | # Licensed 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. | 
|  |  | 
|  | if [[ "${BASH_SOURCE[0]}" = "${0}" ]]; then | 
|  | echo "${0}: this file must be sourced, not run directly" >& 2 | 
|  | exit 1 | 
|  | fi | 
|  |  | 
|  | # Some extensions of command-line tools behave differently on different systems. | 
|  | # $sed_ext should be a sed invocation that enables extended regular expressions. | 
|  | # $date_time_t should be a date invocation that causes it to print the date and | 
|  | # time corresponding to a time_t string that immediately follows it. | 
|  | case "$(uname -s)" in | 
|  | Darwin) | 
|  | sed_ext="sed -E" | 
|  | date_time_t="date -r" | 
|  | ;; | 
|  | Linux) | 
|  | sed_ext="sed -r" | 
|  | date_time_t="date -d@" | 
|  | ;; | 
|  | *) | 
|  | echo "${0}: unknown operating system" >& 2 | 
|  | exit 1 | 
|  | ;; | 
|  | esac |