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All rights reserved. Licensed under the MIT license.\n// See LICENSE in the project root for license information.\n\nimport { StringBuilder, Text } from '@rushstack/node-core-library';\nimport { type ITerminalProvider, TerminalProviderSeverity } from './ITerminalProvider';\nimport { AnsiEscape } from './AnsiEscape';\n\n/**\n * @beta\n */\nexport interface IStringBufferOutputOptions {\n  /**\n   * If set to true, special characters like \\\\n, \\\\r, and the \\\\u001b character\n   * in color control tokens will get normalized to [-n-], [-r-], and [-x-] respectively\n   *\n   * This option defaults to `true`\n   */\n  normalizeSpecialCharacters: boolean;\n}\n\n/**\n * Terminal provider that stores written data in buffers separated by severity.\n * This terminal provider is designed to be used when code that prints to a terminal\n * is being unit tested.\n *\n * @beta\n */\nexport class StringBufferTerminalProvider implements ITerminalProvider {\n  private _standardBuffer: StringBuilder = new StringBuilder();\n  private _verboseBuffer: StringBuilder = new StringBuilder();\n  private _debugBuffer: StringBuilder = new StringBuilder();\n  private _warningBuffer: StringBuilder = new StringBuilder();\n  private _errorBuffer: StringBuilder = new StringBuilder();\n\n  private _supportsColor: boolean;\n\n  public constructor(supportsColor: boolean = false) {\n    this._supportsColor = supportsColor;\n  }\n\n  /**\n   * {@inheritDoc ITerminalProvider.write}\n   */\n  public write(data: string, severity: TerminalProviderSeverity): void {\n    switch (severity) {\n      case TerminalProviderSeverity.warning: {\n        this._warningBuffer.append(data);\n        break;\n      }\n\n      case TerminalProviderSeverity.error: {\n        this._errorBuffer.append(data);\n        break;\n      }\n\n      case TerminalProviderSeverity.verbose: {\n        this._verboseBuffer.append(data);\n        break;\n      }\n\n      case TerminalProviderSeverity.debug: {\n        this._debugBuffer.append(data);\n        break;\n      }\n\n      case TerminalProviderSeverity.log:\n      default: {\n        this._standardBuffer.append(data);\n        break;\n      }\n    }\n  }\n\n  /**\n   * {@inheritDoc ITerminalProvider.eolCharacter}\n   */\n  public get eolCharacter(): string {\n    return '\\n';\n  }\n\n  /**\n   * {@inheritDoc ITerminalProvider.supportsColor}\n   */\n  public get supportsColor(): boolean {\n    return this._supportsColor;\n  }\n\n  /**\n   * Get everything that has been written at log-level severity.\n   */\n  public getOutput(options?: IStringBufferOutputOptions): string {\n    return this._normalizeOutput(this._standardBuffer.toString(), options);\n  }\n\n  /**\n   * @deprecated - use {@link StringBufferTerminalProvider.getVerboseOutput}\n   */\n  public getVerbose(options?: IStringBufferOutputOptions): string {\n    return this.getVerboseOutput(options);\n  }\n\n  /**\n   * Get everything that has been written at verbose-level severity.\n   */\n  public getVerboseOutput(options?: IStringBufferOutputOptions): string {\n    return this._normalizeOutput(this._verboseBuffer.toString(), options);\n  }\n\n  /**\n   * Get everything that has been written at debug-level severity.\n   */\n  public getDebugOutput(options?: IStringBufferOutputOptions): string {\n    return this._normalizeOutput(this._debugBuffer.toString(), options);\n  }\n\n  /**\n   * Get everything that has been written at error-level severity.\n   */\n  public getErrorOutput(options?: IStringBufferOutputOptions): string {\n    return this._normalizeOutput(this._errorBuffer.toString(), options);\n  }\n\n  /**\n   * Get everything that has been written at warning-level severity.\n   */\n  public getWarningOutput(options?: IStringBufferOutputOptions): string {\n    return this._normalizeOutput(this._warningBuffer.toString(), options);\n  }\n\n  private _normalizeOutput(s: string, options: IStringBufferOutputOptions | undefined): string {\n    options = {\n      normalizeSpecialCharacters: true,\n\n      ...(options || {})\n    };\n\n    s = Text.convertToLf(s);\n\n    if (options.normalizeSpecialCharacters) {\n      return AnsiEscape.formatForTests(s, { encodeNewlines: true });\n    } else {\n      return s;\n    }\n  }\n}\n"]}