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Replaces referenced environment variables (e.g. $(BUILD_VERSION)) in a plist file
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| // Usage: | |
| // $/usr/bin/xcrun --sdk macosx swift replacePlistEnvironmentVariables.swift "$inputfile.plist" "$outputfile" | |
| // This will replace all the referenced enviroment variables with their value, for example: | |
| // <string>$(A_VARIABLE)</string> | |
| import Foundation | |
| enum ScriptError: Error { | |
| case invalidPlistArgument(argument: URL) | |
| case sameInputAndOutptFile | |
| } | |
| let inputPlistURL = URL( | |
| fileURLWithPath: CommandLine.arguments[1] | |
| ) | |
| let outputPlistURL = URL( | |
| fileURLWithPath: CommandLine.arguments[2] | |
| ) | |
| try [inputPlistURL, | |
| outputPlistURL | |
| ].forEach { url in | |
| guard url.pathExtension == "plist" else { throw ScriptError.invalidPlistArgument(argument: url) } | |
| } | |
| guard inputPlistURL != outputPlistURL else { throw ScriptError.sameInputAndOutptFile } | |
| let plist = try PropertyListSerialization.propertyList( | |
| from: try Data(contentsOf: inputPlistURL), | |
| format: nil | |
| ) | |
| func replacePlistEnvironmentVariables(_ plist: Any) throws -> Any { | |
| switch plist { | |
| case let dictionary as [String: Any]: | |
| return try dictionary.mapValues(replacePlistEnvironmentVariables) | |
| case let array as [Any]: | |
| return try array.map(replacePlistEnvironmentVariables) | |
| case let string as String: | |
| return try NSRegularExpression( | |
| pattern: "\\$\\((\\w+)\\)" | |
| ).matches( | |
| in: string, | |
| range: NSRange( | |
| string.startIndex..<string.endIndex, | |
| in: string | |
| ) | |
| ).reversed().reduce(into: string) { result, match in | |
| let replaceRange = Range( | |
| match.range(at: 0), | |
| in: string | |
| )! | |
| let variableRange = Range( | |
| match.range(at: 1), | |
| in: string | |
| )! | |
| let variable = String(string[variableRange]) | |
| if let value = ProcessInfo.processInfo.environment[variable] { | |
| let entities = ["\0", "\t", "\n", "\r", "\"", "\'", "\\"] | |
| var current = value | |
| for entity in entities { | |
| let descriptionCharacters = entity.debugDescription.dropFirst().dropLast() | |
| let description = String(descriptionCharacters) | |
| current = current.replacingOccurrences(of: description, with: entity) | |
| } | |
| result.replaceSubrange( | |
| replaceRange, | |
| with: current | |
| ) | |
| } | |
| } | |
| default: return plist | |
| } | |
| } | |
| let resultPlist = try replacePlistEnvironmentVariables(plist) | |
| try PropertyListSerialization.data( | |
| fromPropertyList: resultPlist, | |
| format: .xml, | |
| options: .zero | |
| ).write(to: outputPlistURL) |
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