0001    //
0002    //  OutputTarget.swift
0003    //  Rainbow
0004    //
0005    //  Created by Wei Wang on 15/12/23.
0006    //
0007    //  Copyright (c) 2015 Wei Wang <onevcat@gmail.com>
0008    //
0009    //  Permission is hereby granted, free of charge, to any person obtaining a copy
0010    //  of this software and associated documentation files (the "Software"), to deal
0011    //  in the Software without restriction, including without limitation the rights
0012    //  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
0013    //  copies of the Software, and to permit persons to whom the Software is
0014    //  furnished to do so, subject to the following conditions:
0015    //
0016    //  The above copyright notice and this permission notice shall be included in
0017    //  all copies or substantial portions of the Software.
0018    //
0019    //  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0020    //  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0021    //  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
0022    //  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
0023    //  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
0024    //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
0025    //  THE SOFTWARE.
0026    
0027    #if os(Linux)
0028    import Glibc
0029    #else
0030    import Darwin.C
0031    #endif
0032    
0033    private func getEnvValue
OutputTarget.swift:55
        let xcodeColorsEnabled = (getEnvValue("XcodeColors") == "YES")
OutputTarget.swift:61
        let termType = getEnvValue("TERM")
(key: String) -> String? {
0034        let value = getenv(key)
0035        return value != nil ? String.fromCString(value) : nil
0036    }
0037    
0038    
0039    ///
0040    /**
0041    Output target of Rainbow.
0042    
0043    - Unknown: Unknown target.
0044    - Console: A valid console is detected connected.
0045    - XcodeColors: Used in Xcode with XcodeColors enabled.
0046    */
0047    public enum OutputTarget
OutputTarget.swift:53
    static var currentOutputTarget: OutputTarget = {
Rainbow.swift:44
    public static var outputTarget = OutputTarget.currentOutputTarget
 {
0048        case Unknown
OutputTarget.swift:66
        return .Unknown
Rainbow.swift:79
        case .Unknown:

0049        case Console
OutputTarget.swift:63
            return .Console
Rainbow.swift:77
        case .Console:

0050        case XcodeColors
OutputTarget.swift:57
            return .XcodeColors
Rainbow.swift:75
        case .XcodeColors:

0051        
0052        /// Detected output target by current envrionment.
0053        static var currentOutputTarget
Rainbow.swift:44
    public static var outputTarget = OutputTarget.currentOutputTarget
: OutputTarget = {
0054            // Check if Xcode Colors is installed and enabled.
0055            let xcodeColorsEnabled = (getEnvValue("XcodeColors") == "YES")
0056            if xcodeColorsEnabled {
0057                return .XcodeColors
0058            }
0059            
0060            // Check if we are in any term env and the output is a tty.
0061            let termType = getEnvValue("TERM")
0062            if let t = termType where t.lowercaseString != "dumb" && isatty(fileno(stdout)) != 0 {
0063                return .Console
0064            }
0065            
0066            return .Unknown
0067        }()
0068    }
0069