| // Copyright 2017 The Tulsi 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. |
| |
| import Foundation |
| |
| extension String { |
| // Escape the string for the shell by enclosing it in single quotes if needed. When enclosing in |
| // single quotes, we must replace single quotes with '\\'' which outputs '\''. |
| // See https://stackoverflow.com/a/1315213 for more information. |
| public var escapingForShell: String { |
| guard rangeOfCharacter(from: .whitespaces) != nil || contains("'") || contains("$") else { |
| return self |
| } |
| let escapedString = replacingOccurrences(of: "'", with: "'\\''") |
| return "'\(escapedString)'" |
| } |
| } |