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• [FILE] autolinking_implementation.gradle

Просмотр файла: autolinking_implementation.gradle

import groovy.json.JsonSlurper
import java.nio.file.Paths

// Object representing a module.
class ExpoModule {
  // Name of the JavaScript package
  String name

  // Version of the package, loaded from `package.json`
  String version

  // Name of the Android project
  String projectName

  // Path to the folder with Android project
  String sourceDir

  ExpoModule(Object data) {
    this.name = data.packageName
    this.version = data.packageVersion
    this.projectName = data.projectName
    this.sourceDir = data.sourceDir
  }
}

class ExpoAutolinkingManager {
  private File projectDir
  private Map options
  private Object cachedResolvingResults

  static String generatedPackageListNamespace = 'expo.modules'
  static String generatedPackageListFilename = 'ExpoModulesPackageList.java'
  static String generatedFilesSrcDir = 'generated/expo/src/main/java'

  ExpoAutolinkingManager(File projectDir, Map options = [:]) {
    this.projectDir = projectDir
    this.options = options
  }

  Object resolve() {
    if (cachedResolvingResults) {
      return cachedResolvingResults
    }
    String[] args = convertOptionsToCommandArgs('resolve', this.options)
    args += ['--json']

    String output = exec(args, projectDir)
    Object json = new JsonSlurper().parseText(output)

    cachedResolvingResults = json
    return json
  }

  boolean shouldUseAAR() {
    return options?.useAAR == true
  }

  ExpoModule[] getModules() {
    Object json = resolve()
    return json.modules.collect { new ExpoModule(it) }
  }

  static void generatePackageList(Project project, Map options) {
    String[] args = convertOptionsToCommandArgs('generate-package-list', options)

    // Construct absolute path to generated package list.
    def generatedFilePath = Paths.get(
      project.buildDir.toString(),
      generatedFilesSrcDir,
      generatedPackageListNamespace.replace('.', '/'),
      generatedPackageListFilename
    )

    args += [
      '--namespace',
      generatedPackageListNamespace,
      '--target',
      generatedFilePath.toString()
    ]

    if (options == null) {
      // Options are provided only when settings.gradle was configured.
      // If not or opted-out from autolinking, the generated list should be empty.
      args += '--empty'
    }

    exec(args, project.rootDir)
  }

  static String exec(String[] commandArgs, File dir) {
    Process proc = commandArgs.execute(null, dir)
    StringBuffer outputStream = new StringBuffer()
    proc.waitForProcessOutput(outputStream, System.err)
    return outputStream.toString()
  }

  static private String[] convertOptionsToCommandArgs(String command, Map options) {
    String[] args = [
      'node',
      '--eval',
      'require(\'expo-modules-autolinking\')(process.argv.slice(1))',
      '--',
      command,
      '--platform',
      'android'
    ]

    def searchPaths = options?.get("searchPaths", options?.get("modulesPaths", null))
    if (searchPaths) {
      args += searchPaths
    }

    if (options?.ignorePaths) {
      args += '--ignore-paths'
      args += options.ignorePaths
    }

    if (options?.exclude) {
      args += '--exclude'
      args += options.exclude
    }

    return args
  }
}

class Colors {
  static final String GREEN = "\u001B[32m"
  static final String RESET = "\u001B[0m"
}

// Here we split the implementation, depending on Gradle context.
// `rootProject` is a `ProjectDescriptor` if this file is imported in `settings.gradle` context,
// otherwise we can assume it is imported in `build.gradle`.
if (rootProject instanceof ProjectDescriptor) {
  // Method to be used in `settings.gradle`. Options passed here will have an effect in `build.gradle` context as well,
  // i.e. adding the dependencies and generating the package list.
  ext.useExpoModules = { Map options = [:] ->
    ExpoAutolinkingManager manager = new ExpoAutolinkingManager(rootProject.projectDir, options)
    ExpoModule[] modules = manager.getModules()

    for (module in modules) {
      include(":${module.projectName}")
      project(":${module.projectName}").projectDir = new File(module.sourceDir)
    }

    // Save the manager in the shared context, so that we can later use it in `build.gradle`.
    gradle.ext.expoAutolinkingManager = manager
  }
} else {
  def addModule = { DependencyHandler handler, String projectName, Boolean useAAR ->
    Project dependency = rootProject.project(":${projectName}")

    if (useAAR) {
      handler.add('api', "${dependency.group}:${projectName}:${dependency.version}")
    } else {
      handler.add('api', dependency)
    }
  }

  def addDependencies = { DependencyHandler handler, Project project ->
    ExpoAutolinkingManager manager = gradle.ext.expoAutolinkingManager
    def modules = manager.getModules()

    if (!modules.length) {
      return
    }

    println ''
    println 'Using expo modules'

    for (module in modules) {
      // Don't link itself
      if (module.name == project.name) {
        continue
      }

      addModule(handler, module.projectName, manager.shouldUseAAR())

      // Can remove this once we move all the interfaces into the core.
      if (module.name.endsWith('-interface')) {
        continue
      }

      println "  - ${Colors.GREEN}${module.name}${Colors.RESET} (${module.version})"
    }

    println ''
  }

  // Adding dependencies
  ext.addExpoModulesDependencies = { DependencyHandler handler, Project project ->
    // Return early if `useExpoModules` was not called in `settings.gradle`
    if (!gradle.ext.has('expoAutolinkingManager')) {
      logger.error('Error: Autolinking is not set up in `settings.gradle`: expo modules won\'t be autolinked.')
      return
    }

    ExpoAutolinkingManager manager = gradle.ext.expoAutolinkingManager

    if (rootProject.findProject(':expo-modules-core')) {
      // `expo` requires `expo-modules-core` as a dependency, even if autolinking is turned off.
      addModule(handler, 'expo-modules-core', manager.shouldUseAAR())
    } else {
      logger.error('Error: `expo-modules-core` project is not included by autolinking.')
    }

    // If opted-in not to autolink modules as dependencies
    if (manager.options == null) {
      return
    }

    addDependencies(handler, project)
  }

  // Generating the package list
  ext.generatedFilesSrcDir = ExpoAutolinkingManager.generatedFilesSrcDir

  ext.generateExpoModulesPackageList = {
    // Get options used in `settings.gradle` or null if it wasn't set up.
    Map options = gradle.ext.has('expoAutolinkingManager') ? gradle.ext.expoAutolinkingManager.options : null

    if (options == null) {
      // TODO(@tsapeta): Temporarily muted this error — uncomment it once we start migrating from autolinking v1 to v2
      // logger.error('Autolinking is not set up in `settings.gradle`: generated package list with expo modules will be empty.')
    }
    ExpoAutolinkingManager.generatePackageList(project, options)
  }

  ext.ensureDependeciesWereEvaluated = { Project project -> 
    if (!gradle.ext.has('expoAutolinkingManager')) {
      return
    }

    def modules = gradle.ext.expoAutolinkingManager.getModules()
    for (module in modules) {
      def dependency = project.findProject(":${module.projectName}")
      if (dependency == null) {
        logger.warn("Coudn't find project ${module.projectName}. Please, make sure that `useExpoModules` was called in `settings.gradle`.")
        continue
      }

      // Prevent circular dependencies
      if (module.projectName == project.name) {
        continue
      }
      
      project.evaluationDependsOn(":${module.projectName}")
    }
  }
}

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