private _serializeFormattableTextSegments()

in libraries/node-core-library/src/Terminal/Terminal.ts [190:387]
169 lines of code
34 McCabe index (conditional complexity)

  private _serializeFormattableTextSegments(
    segments: (string | IColorableSequence)[],
    withColor: boolean
  ): string[] {
    const lines: string[] = [];
    let segmentsToJoin: string[] = [];
    let lastSegmentWasEol: boolean = false;
    for (let i: number = 0; i < segments.length; i++) {
      const segment: IColorableSequence = Colors._normalizeStringOrColorableSequence(segments[i]);
      lastSegmentWasEol = !!segment.isEol;
      if (lastSegmentWasEol) {
        lines.push(segmentsToJoin.join(''));
        segmentsToJoin = [];
      } else {
        if (withColor) {
          const startColorCodes: number[] = [];
          const endColorCodes: number[] = [];
          switch (segment.foregroundColor) {
            case ColorValue.Black: {
              startColorCodes.push(ConsoleColorCodes.BlackForeground);
              endColorCodes.push(ConsoleColorCodes.DefaultForeground);
              break;
            }

            case ColorValue.Red: {
              startColorCodes.push(ConsoleColorCodes.RedForeground);
              endColorCodes.push(ConsoleColorCodes.DefaultForeground);
              break;
            }

            case ColorValue.Green: {
              startColorCodes.push(ConsoleColorCodes.GreenForeground);
              endColorCodes.push(ConsoleColorCodes.DefaultForeground);
              break;
            }

            case ColorValue.Yellow: {
              startColorCodes.push(ConsoleColorCodes.YellowForeground);
              endColorCodes.push(ConsoleColorCodes.DefaultForeground);
              break;
            }

            case ColorValue.Blue: {
              startColorCodes.push(ConsoleColorCodes.BlueForeground);
              endColorCodes.push(ConsoleColorCodes.DefaultForeground);
              break;
            }

            case ColorValue.Magenta: {
              startColorCodes.push(ConsoleColorCodes.MagentaForeground);
              endColorCodes.push(ConsoleColorCodes.DefaultForeground);
              break;
            }

            case ColorValue.Cyan: {
              startColorCodes.push(ConsoleColorCodes.CyanForeground);
              endColorCodes.push(ConsoleColorCodes.DefaultForeground);
              break;
            }

            case ColorValue.White: {
              startColorCodes.push(ConsoleColorCodes.WhiteForeground);
              endColorCodes.push(ConsoleColorCodes.DefaultForeground);
              break;
            }

            case ColorValue.Gray: {
              startColorCodes.push(ConsoleColorCodes.GrayForeground);
              endColorCodes.push(ConsoleColorCodes.DefaultForeground);
              break;
            }
          }

          switch (segment.backgroundColor) {
            case ColorValue.Black: {
              startColorCodes.push(ConsoleColorCodes.BlackBackground);
              endColorCodes.push(ConsoleColorCodes.DefaultBackground);
              break;
            }

            case ColorValue.Red: {
              startColorCodes.push(ConsoleColorCodes.RedBackground);
              endColorCodes.push(ConsoleColorCodes.DefaultBackground);
              break;
            }

            case ColorValue.Green: {
              startColorCodes.push(ConsoleColorCodes.GreenBackground);
              endColorCodes.push(ConsoleColorCodes.DefaultBackground);
              break;
            }

            case ColorValue.Yellow: {
              startColorCodes.push(ConsoleColorCodes.YellowBackground);
              endColorCodes.push(ConsoleColorCodes.DefaultBackground);
              break;
            }

            case ColorValue.Blue: {
              startColorCodes.push(ConsoleColorCodes.BlueBackground);
              endColorCodes.push(ConsoleColorCodes.DefaultBackground);
              break;
            }

            case ColorValue.Magenta: {
              startColorCodes.push(ConsoleColorCodes.MagentaBackground);
              endColorCodes.push(ConsoleColorCodes.DefaultBackground);
              break;
            }

            case ColorValue.Cyan: {
              startColorCodes.push(ConsoleColorCodes.CyanBackground);
              endColorCodes.push(ConsoleColorCodes.DefaultBackground);
              break;
            }

            case ColorValue.White: {
              startColorCodes.push(ConsoleColorCodes.WhiteBackground);
              endColorCodes.push(ConsoleColorCodes.DefaultBackground);
              break;
            }

            case ColorValue.Gray: {
              startColorCodes.push(ConsoleColorCodes.GrayBackground);
              endColorCodes.push(49);
              break;
            }
          }

          if (segment.textAttributes) {
            for (const textAttribute of segment.textAttributes) {
              switch (textAttribute) {
                case TextAttribute.Bold: {
                  startColorCodes.push(ConsoleColorCodes.Bold);
                  endColorCodes.push(ConsoleColorCodes.NormalColorOrIntensity);
                  break;
                }

                case TextAttribute.Dim: {
                  startColorCodes.push(ConsoleColorCodes.Dim);
                  endColorCodes.push(ConsoleColorCodes.NormalColorOrIntensity);
                  break;
                }

                case TextAttribute.Underline: {
                  startColorCodes.push(ConsoleColorCodes.Underline);
                  endColorCodes.push(ConsoleColorCodes.UnderlineOff);
                  break;
                }

                case TextAttribute.Blink: {
                  startColorCodes.push(ConsoleColorCodes.Blink);
                  endColorCodes.push(ConsoleColorCodes.BlinkOff);
                  break;
                }

                case TextAttribute.InvertColor: {
                  startColorCodes.push(ConsoleColorCodes.InvertColor);
                  endColorCodes.push(ConsoleColorCodes.InvertColorOff);
                  break;
                }

                case TextAttribute.Hidden: {
                  startColorCodes.push(ConsoleColorCodes.Hidden);
                  endColorCodes.push(ConsoleColorCodes.HiddenOff);
                  break;
                }
              }
            }
          }

          for (let j: number = 0; j < startColorCodes.length; j++) {
            const code: number = startColorCodes[j];
            segmentsToJoin.push(...['\u001b[', code.toString(), 'm']);
          }

          segmentsToJoin.push(segment.text);

          for (let j: number = endColorCodes.length - 1; j >= 0; j--) {
            const code: number = endColorCodes[j];
            segmentsToJoin.push(...['\u001b[', code.toString(), 'm']);
          }
        } else {
          segmentsToJoin.push(segment.text);
        }
      }
    }

    if (segmentsToJoin.length > 0) {
      lines.push(segmentsToJoin.join(''));
    }

    if (lastSegmentWasEol) {
      lines.push('');
    }

    return lines;
  }