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text-beautifier-core

v1.0.0

Published

零依赖文本美化核心引擎

Readme

# Text Beautifier Core

一个轻量级、零依赖的文本美化核心引擎,支持多种装饰效果和结构性元素美化。

## 特性

- **零依赖**:纯 TypeScript 实现,不依赖任何第三方库
- **丰富装饰**:下划线、删除线、渐变、发光、高亮、前缀/后缀等
- **结构性元素美化**:上标、下标、分割线、列表项、引用块、代码块
- **设计模式**:策略模式、工厂模式、组合模式、构建器模式、访问者模式
- **智能美化**:自动识别 HTML 元素并应用规则
- **完整类型**:提供完整的 TypeScript 类型定义
- **高测试覆盖率**:>90% 测试覆盖率

## 安装

```bash
npm install text-beautifier-core
# 或
yarn add text-beautifier-core

快速开始

import { TextBeautifier } from 'text-beautifier-core';

// 创建实例(默认注册所有内置策略)
const beautifier = new TextBeautifier();

// 1. 基础文本装饰
const underlined = beautifier.createStrategy('underline', { color: 'red', style: 'wavy' })
  .apply('Hello World');
console.log(underlined);

// 2. 组合多个装饰
const composite = beautifier.createComposite();
composite.addStrategy('gradient', { colors: ['red', 'blue'] });
composite.addStrategy('glow', { color: 'gold', radius: 3 });
const result = composite.apply('Beautiful Text');
console.log(result);

// 3. 使用构建器链式调用
const builderResult = beautifier.createBuilder()
  .underline({ color: 'blue' })
  .glow({ color: 'pink', radius: 2 })
  .superscript({ color: 'green', icon: { symbol: '✨', position: 'prefix' } })
  .build('2<sup>3</sup> = 8');
console.log(builderResult);

// 4. 美化 HTML 文档
const html = `
  <p>水的化学式是 H<sub>2</sub>O</p>
  <p>2<sup>3</sup> = 8</p>
  <hr>
  <ul>
    <li>第一项</li>
    <li>第二项</li>
  </ul>
`;

const beautified = beautifier.beautifyHtml(html, {
  superscript: { color: '#ff0000', icon: { symbol: '⚡', position: 'prefix' } },
  subscript: { color: '#0000ff', fontSize: '0.8em' },
  horizontalRule: {
    height: 2,
    color: 'linear-gradient(to right, gold, orange)',
    animation: { type: 'glow', duration: 3 }
  },
  listItem: (depth) => ({
    bullet: {
      type: depth === 0 ? 'icon' : 'symbol',
      value: depth === 0 ? '🔥' : '•',
      color: depth === 0 ? 'orange' : 'gray'
    }
  })
});

console.log(beautified);

主要功能

基础装饰线

  • 下划线 (underline)
  • 删除线 (line-through)
  • 上划线 (overline) - 待实现

文字颜色效果

  • 纯色高亮 (highlight)
  • 渐变文字 (gradient)
  • 描边文字 (stroke) - 待实现
  • 文字发光 (glow)

文字间距

  • 字符间距 (letter-spacing) - 待实现
  • 单词间距 (word-spacing) - 待实现

符号装饰

  • 前缀 (prefix)
  • 后缀 (suffix)
  • 图标装饰 (icon) - 可通过前缀/后缀实现

结构性元素美化

  • 上标美化 (superscriptStyle)
  • 下标美化 (subscriptStyle)
  • 分割线美化 (horizontalRuleStyle)
  • 列表项美化 (listItemStyle)
  • 引用块美化 (blockquoteStyle)
  • 代码块美化 (codeBlockStyle)

API 参考

TextBeautifier

主类,提供所有功能的入口。

构造函数

new TextBeautifier(options?: { 
  strategies?: DecorationStrategy[];   // 自定义策略列表
  autoDetect?: boolean;                 // 是否自动检测(预留)
})

方法

| 方法 | 描述 | |------|------| | registerStrategy(strategy) | 注册单个策略 | | registerStrategies(strategies) | 批量注册策略 | | createStrategy(type, config) | 获取策略实例 | | createComposite() | 创建组合装饰器 | | createBuilder() | 创建构建器 | | beautify(input, configs?) | 智能美化(自动选择策略) | | beautifyHtml(html, rules) | 美化 HTML 文档 | | getAvailableTypes() | 获取所有已注册策略类型 | | getStrategiesByCategory(category) | 按类别获取策略 | | getStrategyMetadata(type) | 获取策略元数据 | | hasStrategy(type) | 检查策略是否存在 | | validateConfig(type, config) | 验证配置 | | validateComposite(strategies) | 验证组合配置 | | generateCSS(type, config) | 生成 CSS 字符串 | | generatePreview(type, config) | 生成预览 HTML | | detectElementType(html) | 检测 HTML 元素类型 |

策略接口

所有策略都实现 DecorationStrategy 接口,包含以下核心方法:

  • apply(input, config):应用装饰
  • getCSS(config):获取 CSS 对象
  • validateConfig(config):验证配置
  • getMetadata():获取元数据
  • supports(input):检查是否支持输入

配置类型

每个策略都有对应的配置类型,例如 UnderlineConfigGradientConfigSuperscriptStyleConfig 等。详细字段请参考类型定义。

示例

更多示例请查看 examples 目录。

错误处理

所有错误均继承自 BeautifierError,包含错误码和详细信息。常见错误码:

  • STRATEGY_NOT_FOUND
  • INVALID_CONFIG
  • UNSUPPORTED_ELEMENT
  • FACTORY_ERROR
  • COMPOSITE_ERROR
  • BUILDER_ERROR
  • PARSER_ERROR

示例:

import { StrategyNotFoundError } from 'text-beautifier-core';

try {
  beautifier.createStrategy('unknown', {});
} catch (e) {
  if (e instanceof StrategyNotFoundError) {
    console.error(e.code, e.message, e.details);
  }
}

开发

git clone https://github.com/yourname/text-beautifier-core.git
cd text-beautifier-core
npm install
npm test
npm run build

许可证