如何以编程方式加载Swift软件包配置？

debugcn 发表于 Dev

我试图用来SwiftPM分析本地Package.swift文件。我找不到任何有关此操作的文档。理想情况下，我会打电话给类似

import PackageDescription

let package = try Package(at: "pathToFile/Package.swift")
print(package.dependencies) ...

我尝试使用

 let package = try PackageBuilder.loadPackage(
            packagePath: .init(absolutePath),
            swiftCompiler: .init("/usr/bin/swift"),
            swiftCompilerFlags: [],
            diagnostics: .init())

但这失败，error: no such module \'PackageDescription\'\nimport PackageDescription\n ^", diagnosticFile: nil)因为我的Package.swift文件import PackageDescription按预期开始。

也许有一些事情在这里。

尤里

您应该使用swiftCompilerparam为编译器提供完整路径，以避免出现问题，例如：

import PackageModel
import PackageLoading
import PackageGraph
import Workspace

let swiftCompiler: AbsolutePath = {
    let string: String
#if os(macOS)
    string = try! Process.checkNonZeroExit(args: "xcrun", "--sdk", "macosx", "-f", "swiftc").spm_chomp()
#else
    string = try! Process.checkNonZeroExit(args: "which", "swiftc").spm_chomp()
#endif
    return AbsolutePath(string)
}()

let package = AbsolutePath(".../swift-package-manager")
let diagnostics = DiagnosticsEngine()

do {
    let manifest = try ManifestLoader.loadManifest(packagePath: package, swiftCompiler: swiftCompiler, packageKind: .local)
    let loadedPackage = try PackageBuilder.loadPackage(packagePath: package, swiftCompiler: swiftCompiler, diagnostics: diagnostics)
    let graph = try Workspace.loadGraph(packagePath: package, swiftCompiler: swiftCompiler, diagnostics: diagnostics)
    
    // Manifest
    let products = manifest.products.map({ $0.name }).joined(separator: ", ")
    print("Products:", products)
    let targets = manifest.targets.map({ $0.name }).joined(separator: ", ")
    print("Targets:", targets)
    
    // Package
    let executables = loadedPackage.targets.filter({ $0.type == .executable }).map({ $0.name })
    print("Executable targets:", executables)
    
    // PackageGraph
    let numberOfFiles = graph.reachableTargets.reduce(0, { $0 + $1.sources.paths.count })
    print("Total number of source files (including dependencies):", numberOfFiles)
}
catch {
    print(error)
}

输出：

Products: SwiftPM, SwiftPM-auto, PackageDescription
Targets: PackageDescription, LLBuildManifest, SourceControl, SPMLLBuild, PackageModel, PackageLoading, PackageGraph, Build, Xcodeproj, Workspace, Commands, swift-package, swift-build, swift-test, swift-run, swiftpm-xctest-helper, SPMTestSupport, BuildTests, CommandsTests, WorkspaceTests, FunctionalTests, FunctionalPerformanceTests, PackageDescription4Tests, PackageLoadingTests, PackageLoadingPerformanceTests, PackageModelTests, PackageGraphTests, PackageGraphPerformanceTests, SourceControlTests, XcodeprojTests
Executable targets: ["swift-run", "swift-build", "swift-package", "swiftpm-xctest-helper", "swift-test"]
Total number of source files (including dependencies): 344

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