TypeScript strings.dasherize方法代碼示例

  return (tree: Tree, context: SchematicContext) => {
    if (!options.name) {
      throw new SchematicsException('name option is required.');
    }

    let collectionPath: Path | undefined;
    try {
      const packageJsonContent = tree.read('/package.json');
      if (packageJsonContent) {
        const packageJson = JSON.parse(packageJsonContent.toString('utf-8'));
        if ('schematics' in packageJson) {
          const p = normalize(packageJson['schematics']);
          if (tree.exists(p)) {
            collectionPath = p;
          }
        }
      }
    } catch (_) {
    }

    let source = apply(url('./schematic-files'), [
        applyTemplates({
          ...options as object,
          coreVersion,
          schematicsVersion,
          dot: '.',
          camelize: strings.camelize,
          dasherize: strings.dasherize,
        }),
      ]);

    // Simply create a new schematic project.
    if (!collectionPath) {
      collectionPath = normalize('/' + options.name + '/src/collection.json');
      source = apply(url('./project-files'), [
        applyTemplates({
          ...options as object,
          coreVersion,
          schematicsVersion,
          dot: '.',
          camelize: strings.camelize,
          dasherize: strings.dasherize,
        }),
        mergeWith(source),
        move(options.name),
      ]);

      context.addTask(new NodePackageInstallTask(options.name));
    }

    return chain([
      mergeWith(source),
      addSchematicToCollectionJson(collectionPath, strings.dasherize(options.name), {
        description: 'A blank schematic.',
        factory: './' + strings.dasherize(options.name) + '/index#' +
          strings.camelize(options.name),
      }),
    ]);
  };

function getRelativePath(path: string, schema: CommonSchema) {
  const importPath =
    `/${schema.path}/` +
    (schema.flat ? '' : strings.dasherize(schema.name) + '/') +
    strings.dasherize(schema.name) +
    '.component';
  return buildRelativePath(path, importPath);
}

  return (host: Tree) => {
    if (options.skipImport || !options.module) {
      return host;
    }

    const modulePath = options.module;
    const text = host.read(modulePath);
    if (text === null) {
      throw new SchematicsException(`File ${modulePath} does not exist.`);
    }
    const sourceText = text.toString('utf-8');
    const source = ts.createSourceFile(modulePath, sourceText, ts.ScriptTarget.Latest, true);

    const componentPath = `/${options.path}/`
                          + (options.flat ? '' : strings.dasherize(options.name) + '/')
                          + strings.dasherize(options.name)
                          + '.component';
    const relativePath = buildRelativePath(modulePath, componentPath);
    const classifiedName = strings.classify(`${options.name}Component`);
    const declarationChanges = addDeclarationToModule(source,
                                                      modulePath,
                                                      classifiedName,
                                                      relativePath);

    const declarationRecorder = host.beginUpdate(modulePath);
    for (const change of declarationChanges) {
      if (change instanceof InsertChange) {
        declarationRecorder.insertLeft(change.pos, change.toAdd);
      }
    }
    host.commitUpdate(declarationRecorder);

    if (options.export) {
      // Need to refresh the AST because we overwrote the file in the host.
      const text = host.read(modulePath);
      if (text === null) {
        throw new SchematicsException(`File ${modulePath} does not exist.`);
      }
      const sourceText = text.toString('utf-8');
      const source = ts.createSourceFile(modulePath, sourceText, ts.ScriptTarget.Latest, true);

      const exportRecorder = host.beginUpdate(modulePath);
      const exportChanges = addExportToModule(source, modulePath,
                                              strings.classify(`${options.name}Component`),
                                              relativePath);

      for (const change of exportChanges) {
        if (change instanceof InsertChange) {
          exportRecorder.insertLeft(change.pos, change.toAdd);
        }
      }
      host.commitUpdate(exportRecorder);
    }


    return host;
  };

  return (host: Tree) => {
    if (options.skipImport || !options.module) {
      return host;
    }

    const modulePath = options.module;
    const text = host.read(modulePath);
    if (text === null) {
      throw new SchematicsException(`File ${modulePath} does not exist.`);
    }
    const sourceText = text.toString('utf-8');
    const source = ts.createSourceFile(modulePath, sourceText, ts.ScriptTarget.Latest, true);

    const pipePath = `/${options.path}/`
                     + (options.flat ? '' : strings.dasherize(options.name) + '/')
                     + strings.dasherize(options.name)
                     + '.pipe';
    const relativePath = buildRelativePath(modulePath, pipePath);
    const changes = addDeclarationToModule(source, modulePath,
                                           strings.classify(`${options.name}Pipe`),
                                           relativePath);
    const recorder = host.beginUpdate(modulePath);
    for (const change of changes) {
      if (change instanceof InsertChange) {
        recorder.insertLeft(change.pos, change.toAdd);
      }
    }
    host.commitUpdate(recorder);

    if (options.export) {
      const text = host.read(modulePath);
      if (text === null) {
        throw new SchematicsException(`File ${modulePath} does not exist.`);
      }
      const sourceText = text.toString('utf-8');
      const source = ts.createSourceFile(modulePath, sourceText, ts.ScriptTarget.Latest, true);

      const exportRecorder = host.beginUpdate(modulePath);
      const exportChanges = addExportToModule(source, modulePath,
                                              strings.classify(`${options.name}Pipe`),
                                              relativePath);

      for (const change of exportChanges) {
        if (change instanceof InsertChange) {
          exportRecorder.insertLeft(change.pos, change.toAdd);
        }
      }
      host.commitUpdate(exportRecorder);
    }

    return host;
  };

export function findModuleFromOptions(host: Tree, options: ModuleOptions): Path | undefined {
  if (options.hasOwnProperty('skipImport') && options.skipImport) {
    return undefined;
  }

  if (!options.module) {
    const pathToCheck = (options.sourceDir || '') + '/' + (options.path || '')
                      + (options.flat ? '' : '/' + strings.dasherize(options.name));

    return normalize(findModule(host, pathToCheck));
  } else {
    const modulePath = normalize(
      '/' + options.sourceDir + '/' + (options.appRoot || options.path) + '/' + options.module);
    const moduleBaseName = normalize(modulePath).split('/').pop();

    if (host.exists(modulePath)) {
      return normalize(modulePath);
    } else if (host.exists(modulePath + '.ts')) {
      return normalize(modulePath + '.ts');
    } else if (host.exists(modulePath + '.module.ts')) {
      return normalize(modulePath + '.module.ts');
    } else if (host.exists(modulePath + '/' + moduleBaseName + '.module.ts')) {
      return normalize(modulePath + '/' + moduleBaseName + '.module.ts');
    } else {
      throw new Error('Specified module does not exist');
    }
  }
}

function buildSelector(options: any) {
  let selector = strings.dasherize(options.name);
  if (options.prefix) {
    selector = `${options.prefix}-${selector}`;
  }

  return selector;
}

function buildSelector(options: ComponentOptions, projectPrefix: string) {
  let selector = strings.dasherize(options.name);
  if (options.prefix) {
    selector = `${options.prefix}-${selector}`;
  } else if (options.prefix === undefined && projectPrefix) {
    selector = `${projectPrefix}-${selector}`;
  }

  return selector;
}

export function findModuleFromOptions(host: Tree, options: ModuleOptions): Path | undefined {
  if (options.hasOwnProperty('skipImport') && options.skipImport) {
    return undefined;
  }

  const moduleExt = options.moduleExt || MODULE_EXT;
  const routingModuleExt = options.routingModuleExt || ROUTING_MODULE_EXT;

  if (!options.module) {
    const pathToCheck = (options.path || '')
      + (options.flat ? '' : '/' + strings.dasherize(options.name));

    return normalize(findModule(host, pathToCheck, moduleExt, routingModuleExt));
  } else {
    const modulePath = normalize(`/${options.path}/${options.module}`);
    const componentPath = normalize(`/${options.path}/${options.name}`);
    const moduleBaseName = normalize(modulePath).split('/').pop();

    const candidateSet = new Set<Path>([
      normalize(options.path || '/'),
    ]);

    for (let dir = modulePath; dir != NormalizedRoot; dir = dirname(dir)) {
      candidateSet.add(dir);
    }
    for (let dir = componentPath; dir != NormalizedRoot; dir = dirname(dir)) {
      candidateSet.add(dir);
    }

    const candidatesDirs = [...candidateSet].sort((a, b) => b.length - a.length);
    for (const c of candidatesDirs) {
      const candidateFiles = [
        '',
        `${moduleBaseName}.ts`,
        `${moduleBaseName}${moduleExt}`,
      ].map(x => join(c, x));

      for (const sc of candidateFiles) {
        if (host.exists(sc)) {
          return normalize(sc);
        }
      }
    }

    throw new Error(
      `Specified module '${options.module}' does not exist.\n`
        + `Looked in the following directories:\n    ${candidatesDirs.join('\n    ')}`,
    );
  }
}

export default async function () {
  const commandsPath = __dirname + '/../../../packages/@angular/cli/commands';
  const commandFiles = fs.readdirSync(commandsPath);

  const engineHost = new NodeModulesEngineHost();
  const registry = new schema.CoreSchemaRegistry(formats.standardFormats);
  engineHost.registerOptionsTransform(validateOptionsWithSchema(registry));

  for (const commandFile of commandFiles) {
    const commandConstructor = require(path.join(commandsPath, commandFile)).default;
    const command = new commandConstructor(
      { project: { root: path.join(__dirname, '../fake_root/') } },
      new logging.NullLogger(),
    );

    if (command.hidden) {
      continue;
    }

    generateDoc(command, commandFile);

    if (command.name === 'generate') {
      const collection = engineHost.createCollectionDescription('@schematics/angular');

      for (const schematicName in collection.schematics) {
        const schematic = collection.schematics[schematicName];
        if (schematic.hidden || schematic.private) {
          continue;
        }
        const generateCommand = new commandConstructor(
          { project: { root: path.join(__dirname, '../fake_root/') } },
          new logging.NullLogger(),
        );
        generateDoc(
          generateCommand,
          commandFile,
          { _: [`${collection.name}:${schematicName}`] },
          {
            name: strings.dasherize(schematicName),
            namePrefix: 'generate ',
            description: schematic.description,
            path: 'generate',
          },
        );
      }
    }
  }
}