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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift open source project
//
// Copyright (c) 2014-2022 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import ArgumentParser
import Basics
import CoreCommands
import PackageModel
import class Basics.AsyncProcess
import enum TSCUtility.Diagnostics
extension SwiftPackageCommand {
struct Format: AsyncSwiftCommand {
static let configuration = CommandConfiguration(
commandName: "_format", shouldDisplay: false)
@OptionGroup(visibility: .hidden)
var globalOptions: GlobalOptions
@Argument(parsing: .captureForPassthrough,
help: "Pass flag through to the swift-format tool")
var swiftFormatFlags: [String] = []
func run(_ swiftCommandState: SwiftCommandState) async throws {
// Look for swift-format binary.
// FIXME: This should be moved to user toolchain.
let swiftFormatInEnv = lookupExecutablePath(filename: Environment.current["SWIFT_FORMAT"])
guard let swiftFormat = swiftFormatInEnv ?? AsyncProcess.findExecutable("swift-format") else {
swiftCommandState.observabilityScope.emit(error: "Could not find swift-format in PATH or SWIFT_FORMAT")
throw TSCUtility.Diagnostics.fatalError
}
// Get the root package.
let workspace = try swiftCommandState.getActiveWorkspace()
guard let packagePath = try swiftCommandState.getWorkspaceRoot().packages.first else {
throw StringError("unknown package")
}
let package = try await workspace.loadRootPackage(
at: packagePath,
observabilityScope: swiftCommandState.observabilityScope
)
// Use the user provided flags or default to formatting mode.
let formatOptions = swiftFormatFlags.isEmpty
? ["--mode", "format", "--in-place", "--parallel"]
: swiftFormatFlags
// Process each target in the root package.
let paths = package.modules.flatMap { target in
target.sources.paths.filter { file in
file.extension == SupportedLanguageExtension.swift.rawValue
}
}.map { $0.pathString }
let args = [swiftFormat.pathString] + formatOptions + [packagePath.pathString] + paths
print("Running:", args.map{ $0.spm_shellEscaped() }.joined(separator: " "))
let result = try await AsyncProcess.popen(arguments: args)
let output = try (result.utf8Output() + result.utf8stderrOutput())
if result.exitStatus != .terminated(code: 0) {
print("Non-zero exit", result.exitStatus)
}
if !output.isEmpty {
print(output)
}
}
}
}
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