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TypeScript json.parseJson方法代碼示例

本文整理匯總了TypeScript中@angular-devkit/core.json.parseJson方法的典型用法代碼示例。如果您正苦於以下問題:TypeScript json.parseJson方法的具體用法?TypeScript json.parseJson怎麽用?TypeScript json.parseJson使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在@angular-devkit/core.json的用法示例。


在下文中一共展示了json.parseJson方法的1個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的TypeScript代碼示例。

示例1: runCommand

export async function runCommand(
  args: string[],
  logger: logging.Logger,
  workspace: CommandWorkspace,
  commands?: CommandMapOptions,
): Promise<number | void> {
  if (commands === undefined) {
    const commandMapPath = findUp('commands.json', __dirname);
    if (commandMapPath === null) {
      throw new Error('Unable to find command map.');
    }
    const cliDir = dirname(commandMapPath);
    const commandsText = readFileSync(commandMapPath).toString('utf-8');
    const commandJson = json.parseJson(
      commandsText,
      JsonParseMode.Loose,
      { path: commandMapPath },
    );
    if (!isJsonObject(commandJson)) {
      throw Error('Invalid command.json');
    }

    commands = {};
    for (const commandName of Object.keys(commandJson)) {
      const commandValue = commandJson[commandName];
      if (typeof commandValue == 'string') {
        commands[commandName] = resolve(cliDir, commandValue);
      }
    }
  }

  // This registry is exclusively used for flattening schemas, and not for validating.
  const registry = new schema.CoreSchemaRegistry([]);
  registry.registerUriHandler((uri: string) => {
    if (uri.startsWith('ng-cli://')) {
      const content = readFileSync(join(__dirname, '..', uri.substr('ng-cli://'.length)), 'utf-8');

      return Promise.resolve(JSON.parse(content));
    } else {
      return null;
    }
  });

  // Normalize the commandMap
  const commandMap: CommandDescriptionMap = {};
  for (const name of Object.keys(commands)) {
    const schemaPath = commands[name];
    const schemaContent = readFileSync(schemaPath, 'utf-8');
    const schema = json.parseJson(schemaContent, JsonParseMode.Loose, { path: schemaPath });
    if (!isJsonObject(schema)) {
      throw new Error('Invalid command JSON loaded from ' + JSON.stringify(schemaPath));
    }

    commandMap[name] =
      await parseJsonSchemaToCommandDescription(name, schemaPath, registry, schema);
  }

  let commandName: string | undefined = undefined;
  for (let i = 0; i < args.length; i++) {
    const arg = args[i];

    if (arg in commandMap) {
      commandName = arg;
      args.splice(i, 1);
      break;
    } else if (!arg.startsWith('-')) {
      commandName = arg;
      args.splice(i, 1);
      break;
    }
  }

  // if no commands were found, use `help`.
  if (commandName === undefined) {
    if (args.length === 1 && args[0] === '--version') {
      commandName = 'version';
    } else {
      commandName = 'help';
    }
  }

  let description: CommandDescription | null = null;

  if (commandName !== undefined) {
    if (commandMap[commandName]) {
      description = commandMap[commandName];
    } else {
      Object.keys(commandMap).forEach(name => {
        const commandDescription = commandMap[name];
        const aliases = commandDescription.aliases;

        let found = false;
        if (aliases) {
          if (aliases.some(alias => alias === commandName)) {
            found = true;
          }
        }

        if (found) {
          if (description) {
//.........這裏部分代碼省略.........
開發者ID:DevIntent,項目名稱:angular-cli,代碼行數:101,代碼來源:command-runner.ts


注:本文中的@angular-devkit/core.json.parseJson方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台,相關代碼片段篩選自各路編程大神貢獻的開源項目,源碼版權歸原作者所有,傳播和使用請參考對應項目的License;未經允許,請勿轉載。