NetNewsWire/buildscripts/VerifyNoBuildSettings.swift

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#!/usr/bin/swift
// This script is originally from github.com/olofhellman/VerifyNoBS
// The idea is that all build settings should be kept in .xcconfig files,
// rather than in the xcode pbxproj file inside an Xcode project bundle
// Having the script run as part of a regular build ensures that the project file
// doesn't accidentally accumulate build settings
import Darwin
import Foundation
func reportError(message: String) {
print("error message was \(message)")
let stderr = FileHandle.standardError
if let data = message.data(using: String.Encoding.utf8, allowLossyConversion: false) {
stderr.write(data)
} else {
print("there was an error. script \"VerifyNoBuildSettings\" could not convert error message to printable string")
}
}
public enum ProcessXcodeprojResult {
case FoundBuildSettings([String])
case Error(String)
case OK(String)
}
public func processXcodeprojAt(url: URL) -> ProcessXcodeprojResult {
let startTime = Date()
guard let xcodeproj = try? String(contentsOf: url, encoding: String.Encoding.utf8) else {
return .Error("script \"VerifyNoBuildSettings\" failed making xcodeproj from url")
}
let lines = xcodeproj.components(separatedBy: CharacterSet.newlines)
print ("found \(lines.count) lines")
var badLines: [String] = []
var inBuildSettingsBlock = false
for nthLine in lines {
if inBuildSettingsBlock {
if let _ = nthLine.range(of:"\\u007d[:space:]*;", options: .regularExpression) {
inBuildSettingsBlock = false
} else if let _ = nthLine.range(of:"CODE_SIGN_IDENTITY") {
} else {
badLines.append(nthLine)
}
} else {
if let _ = nthLine.range(of:"buildSettings[:space:]*=", options: .regularExpression) {
inBuildSettingsBlock = true
}
}
}
let timeInterval = Date().timeIntervalSince(startTime)
print ("process took \(timeInterval) seconds")
if (badLines.count > 0) {
return .FoundBuildSettings(badLines)
}
return .OK(":-)")
}
print("Verifying no buildSettings...")
let commandLineArgs = CommandLine.arguments
print("processArgs were \(commandLineArgs)")
let xcodeprojfilepath = commandLineArgs[1]
let myUrl = URL(fileURLWithPath:xcodeprojfilepath)
let result = processXcodeprojAt(url: myUrl)
switch result {
case .Error(let str):
reportError (message: "error script \"VerifyNoBuildSettings\" encountered an error: \(str)")
exit(EXIT_FAILURE)
case .FoundBuildSettings(let badLines):
reportError (message: "script \"VerifyNoBuildSettings\" found build settings in the project file:")
for badLine in badLines {
reportError (message: " \(badLine)\n")
}
exit(EXIT_FAILURE)
case .OK:
print ("script \"VerifyNoBuildSettings\" verified the project contained no buildSettings")
exit(EXIT_SUCCESS)
}