68 lines
1.6 KiB
JavaScript
68 lines
1.6 KiB
JavaScript
// js/process/ocr-adapters/base-adapter.js
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// OCR 适配器基类
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/**
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* OCR 适配器基类（抽象类）
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*/
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class BaseOcrAdapter {
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constructor(config) {
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this.config = config;
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}
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/**
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* 处理文件（子类必须实现）
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* @param {File} file - PDF 文件
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* @param {Function} onProgress - 进度回调
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* @returns {Promise<Object>} { markdown: string, images: [{id, data}], metadata: {} }
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*/
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async processFile(file, onProgress) {
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throw new Error('processFile() must be implemented by subclass');
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}
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/**
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* Blob 转 Base64
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* @param {Blob} blob
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* @returns {Promise<string>}
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*/
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blobToBase64(blob) {
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return new Promise((resolve, reject) => {
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const reader = new FileReader();
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reader.onloadend = () => resolve(reader.result);
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reader.onerror = reject;
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reader.readAsDataURL(blob);
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});
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}
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/**
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* 生成唯一 ID
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* @returns {string}
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*/
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generateId() {
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return `${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
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}
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/**
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* 延迟函数
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* @param {number} ms - 毫秒
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* @returns {Promise<void>}
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*/
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sleep(ms) {
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return new Promise(resolve => setTimeout(resolve, ms));
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}
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/**
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* 延迟函数（别名，兼容性）
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* @param {number} ms - 毫秒
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* @returns {Promise<void>}
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*/
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delay(ms) {
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return this.sleep(ms);
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}
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}
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// 导出到全局（向后兼容 OcrAdapter 名称）
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if (typeof window !== 'undefined') {
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window.BaseOcrAdapter = BaseOcrAdapter;
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window.OcrAdapter = BaseOcrAdapter; // 兼容旧代码
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}
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