1216 lines
71 KiB
JavaScript
1216 lines
71 KiB
JavaScript
// process/main.js
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/**
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* 处理单个 PDF 文件或 Markdown/TXT 文件的核心函数。
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* 该函数封装了从文件上传、OCR（如果需要）、内容提取、分段翻译（如果需要）、
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* 错误处理到结果保存的完整流程。
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*
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* 主要流程：
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* 1. **初始化与日志**：
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* - 记录文件处理开始的日志，包括文件名、类型和使用的 API Key 信息（部分屏蔽）。
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* 2. **文件类型判断与内容提取**：
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* - **PDF 文件**：
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* - 检查 Mistral API Key 是否提供，未提供则抛出错误。
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* - 调用 `uploadToMistral` 上传文件。
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* - 调用 `getMistralSignedUrl` 获取签名 URL。
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* - 调用 `callMistralOcr` 进行 OCR 处理。
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* - 调用 `processOcrResults` (如果可用) 处理 OCR 结果，提取 Markdown 内容和图片数据。
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* - 捕获 OCR 过程中的错误，特别是 API Key 失效的错误 (如401)，如果发生则返回特定错误对象，以便上层进行 Key 失效处理。
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* - **MD/TXT 文件**：
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* - 直接读取文件文本内容作为 Markdown 内容。
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* - **DOCX 文件**：
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* - 使用 `mammoth` 将文档转换为 HTML，再转为 Markdown。
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* - **HTML 文件**：
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* - 直接解析 HTML 并转为 Markdown。
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* - **PPTX 文件**：
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* - 解析各幻灯片 XML，提取文本内容并拼接。
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* - **EPUB 文件**：
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* - 解析 OPF 清单与 spine，依次抽取章节 HTML 转为 Markdown。
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* - **不支持的文件类型**：抛出错误。
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* 3. **翻译流程** (如果 `selectedTranslationModelName` 不是 'none')：
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* - 检查翻译 API Key 是否提供，未提供则记录警告，翻译内容标记为未翻译。
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* - **估算 Token 数与分段判断**：
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* - 使用 `estimateTokenCount` (如果可用) 估算 Markdown 内容的 token 数。
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* - 如果 token 数超过 `tokenLimit * 1.1`，则判断为长文档，调用 `translateLongDocument` (如果可用) 进行分段翻译。
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* `translateLongDocument` 内部会处理表格保护、并发控制、自定义模型配置和重试逻辑。
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* - 否则，判断为短文档，直接调用 `translateMarkdown` (如果可用) 进行单块翻译。
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* 在调用 `translateMarkdown` 前后通过 `acquireSlot` 和 `releaseSlot` 控制并发。
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* - **错误处理**：
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* - 捕获翻译过程中的错误，特别是 API Key 失效的错误。如果发生，返回特定错误对象以便上层处理。
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* - 其他翻译错误，则将翻译内容标记为失败，但保留 OCR 结果（如果成功）。
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* 4. **结果保存**：
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* - 调用 `saveResultToDB` (如果可用) 将处理结果（包括原文、译文、图片、分块信息）保存到 IndexedDB。
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* 5. **成功回调**：
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* - 调用 `onFileSuccess` 回调函数，通知上层该文件处理成功。
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* 6. **返回结果对象**：
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* - 返回一个包含处理结果的对象，包括 `file`, `markdown`, `translation`, `images`, `ocrChunks`, `translatedChunks` 和 `error` (成功时为 `null`)。
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* - 如果发生可识别的 Key 失效，`keyInvalid` 字段会被设置。
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* 7. **异常捕获 (Final Catch)**：
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* - 捕获整个流程中未被特定逻辑捕获的严重错误，记录日志，并返回包含错误信息的对象。
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* 8. **资源清理 (Finally Block)**：
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* - 如果是 PDF 文件且成功上传到 Mistral，则调用 `deleteMistralFile` 清理在 Mistral 服务器上的临时文件。
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* - 捕获并记录清理过程中的潜在错误。
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*
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* @param {File} fileToProcess - 待处理的 PDF、Markdown 或 TXT 文件对象。
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* @param {Object | null} mistralKeyObject - Mistral API Key 对象，包含 `id` 和 `value`，或为 `null`。
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* @param {Object | null} translationKeyObject - 选定翻译模型对应的 API Key 对象，包含 `id` 和 `value`，或为 `null`。
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* @param {string} selectedTranslationModelName - 选定的翻译模型名称 (如 'deepseek', 'custom', 'none')。
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* @param {Object | null} translationModelConfig - 当 `selectedTranslationModelName` 为 'custom' 时，提供自定义模型的配置对象。
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* @param {number} maxTokensPerChunkValue - (用于长文档翻译) 每个翻译分块的最大 token 限制。
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* @param {string} targetLanguageValue - 目标翻译语言代码 (如 'zh-CN', 'en')。
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* @param {function} acquireSlot - 用于获取并发执行槽位的函数。
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* @param {function} releaseSlot - 用于释放并发执行槽位的函数。
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* @param {string} defaultSystemPromptSetting - 翻译时使用的默认系统提示词。
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* @param {string} defaultUserPromptTemplateSetting - 翻译时使用的默认用户提示词模板。
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* @param {boolean} useCustomPromptsSetting - 是否使用用户自定义的提示词。
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* @param {function} onFileSuccess - 单个文件处理成功后的回调函数，参数为成功处理的 `File` 对象。
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* @returns {Promise<Object>} 一个包含处理结果的对象。成功时结构如：
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* `{ file, markdown, translation, images, ocrChunks, translatedChunks, error: null }`。
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* 失败或 Key 失效时，`error` 字段会有错误信息，`keyInvalid` 字段可能被设置。
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*/
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function convertHtmlToMarkdown(htmlText) {
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const html = String(htmlText || '');
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if (typeof TurndownService === 'function') {
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try {
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const turndown = new TurndownService({ headingStyle: 'atx', codeBlockStyle: 'fenced' });
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return turndown.turndown(html);
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} catch (err) {
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console.warn('[convertHtmlToMarkdown] turndown 转换失败，回退为纯文本', err);
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}
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}
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return html
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.replace(/\r?\n/g, '\n')
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.replace(/<\s*br\s*\/?>/gi, '\n')
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.replace(/<[^>]+>/g, '')
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.replace(/\n{3,}/g, '\n\n');
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}
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function arrayBufferToBase64(buffer) {
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if (!buffer) return null;
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const bytes = buffer instanceof ArrayBuffer ? new Uint8Array(buffer) : new Uint8Array(buffer.buffer || []);
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if (!bytes.length) return null;
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let binary = '';
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const chunkSize = 0x8000;
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for (let i = 0; i < bytes.length; i += chunkSize) {
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const chunk = bytes.subarray(i, i + chunkSize);
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binary += String.fromCharCode.apply(null, chunk);
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}
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return btoa(binary);
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}
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async function processSinglePdf(
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fileToProcess,
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mistralKeyObject,
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translationKeyObject,
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selectedTranslationModelName,
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translationModelConfig,
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maxTokensPerChunkValue,
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targetLanguageValue,
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acquireSlot,
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releaseSlot,
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defaultSystemPromptSetting,
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defaultUserPromptTemplateSetting,
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useCustomPromptsSetting, // 新增参数
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batchContext,
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onFileSuccess
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) {
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let currentMarkdownContent = '';
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let currentTranslationContent = '';
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let currentImagesData = [];
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let mistralFileId = null; // 重命名 fileId to mistralFileId for clarity
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const logPrefix = `[${fileToProcess.name}]`;
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const fileType = fileToProcess.name.split('.').pop().toLowerCase();
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const relativePath = fileToProcess.pbxRelativePath || fileToProcess.webkitRelativePath || fileToProcess.relativePath || fileToProcess.fullPath || fileToProcess.name;
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const sourceArchive = fileToProcess.sourceArchive || null;
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let ocrChunks = [];
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let translatedChunks = [];
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let originalContent = null;
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let originalBinary = null;
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let originalEncoding = null;
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let originalExtension = fileType || '';
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let ocrResult = null; // 保存 OCR 结果以便后续判断是否使用结构化翻译
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// 移除旧的内部重试和key切换逻辑，这些将由 app.js 处理
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console.log('processSinglePdf: translationKeyObject', translationKeyObject);
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try {
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let usedOcrEngine = null;
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let usedOcrSource = null;
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// 更合理的开始日志：显示 OCR 引擎而不是固定显示 Mistral Key
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let ocrEngineForLog = 'mineru';
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try {
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if (typeof window !== 'undefined' && window.ocrSettingsManager && typeof window.ocrSettingsManager.getCurrentConfig === 'function') {
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const cfg = window.ocrSettingsManager.getCurrentConfig();
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if (cfg && cfg.engine) ocrEngineForLog = cfg.engine;
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} else {
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ocrEngineForLog = localStorage.getItem('ocrEngine') || 'mineru';
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}
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} catch {}
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if (typeof addProgressLog === "function") {
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addProgressLog(`${logPrefix} 开始处理 (类型: ${fileType}, OCR 引擎: ${ocrEngineForLog})`);
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}
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// 检查：如果选择了"不需要 OCR"但文件是 PDF，报错
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if (ocrEngineForLog === 'none' && fileType === 'pdf') {
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throw new Error('处理 PDF 文件需要选择 OCR 引擎，当前选择了"不需要 OCR"。请在设置中选择 Mistral OCR、MinerU 或 Doc2X。');
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}
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if (fileType === 'pdf') {
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// 使用 OCR Manager 进行多引擎 OCR 处理
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try {
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if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 开始 OCR 处理...`);
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// 创建 OcrManager 实例
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if (typeof OcrManager === 'undefined') {
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throw new Error('OcrManager 未加载，无法处理 PDF');
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}
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const ocrManager = new OcrManager();
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// 创建进度回调包装器
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const onProgress = (current, total, message) => {
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if (typeof addProgressLog === "function") {
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addProgressLog(`${logPrefix} ${message}`);
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}
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};
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// 调用 OCR Manager 处理文件
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ocrResult = await ocrManager.processFile(fileToProcess, onProgress);
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// 提取结果
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currentMarkdownContent = ocrResult.markdown;
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currentImagesData = ocrResult.images;
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usedOcrEngine = ocrResult && ocrResult.metadata && ocrResult.metadata.engine ? ocrResult.metadata.engine : null;
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usedOcrSource = ocrResult && ocrResult.metadata && ocrResult.metadata.source ? ocrResult.metadata.source : null;
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if (typeof addProgressLog === "function") {
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addProgressLog(`${logPrefix} OCR 完成 (引擎: ${ocrResult.metadata.engine})`);
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}
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} catch (error) {
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// 判断是否为 API Key 失效错误（兼容 Mistral 旧逻辑）
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if (error.message && (
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error.message.includes('无效') ||
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error.message.includes('未授权') ||
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error.message.includes('401') ||
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error.message.toLowerCase().includes('invalid api key') ||
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error.message.toLowerCase().includes('unauthorized') ||
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error.message.includes('可能已失效')
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)) {
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// 如果是 Mistral 引擎且有 Key 对象，返回 Key 失效信息
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if (mistralKeyObject && error.message.includes('Mistral')) {
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if (typeof addProgressLog === "function") {
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const mistralKeyValue = mistralKeyObject.value;
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addProgressLog(`${logPrefix} Mistral API Key (...${mistralKeyValue.slice(-4)}) 可能已失效: ${error.message}`);
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}
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return {
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file: fileToProcess,
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keyInvalid: {
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type: 'mistral',
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keyIdToInvalidate: mistralKeyObject.id
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},
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error: `Mistral Key 失效: ${error.message}`
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};
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}
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}
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throw error; // 其他类型的OCR错误，向上抛出由 app.js 的常规重试处理
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}
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} else if (fileType === 'md' || fileType === 'txt' || fileType === 'yaml' || fileType === 'yml' || fileType === 'json' || fileType === 'csv' || fileType === 'ini' || fileType === 'cfg' || fileType === 'log' || fileType === 'tex') {
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if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 读取 ${fileType.toUpperCase()} 文件内容...`);
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try {
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originalContent = await fileToProcess.text();
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originalEncoding = 'text';
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currentMarkdownContent = originalContent;
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if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} ${fileType.toUpperCase()} 文件内容读取完成`);
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// 尝试从历史记录引用中携带图片：
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// 约定：如果 Markdown 以注释行 "<!-- PBX-HISTORY-REF:<id> -->" 开头，则从 IndexedDB 中取出该记录的 images。
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try {
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const refMatch = currentMarkdownContent.match(/^<!--\s*PBX-HISTORY-REF:([^>]+)\s*-->\s*/m);
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const isRetryFailed = /<!--\s*PBX-MODE:retry-failed\s*-->/.test(currentMarkdownContent);
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const isRetryStructuredFailed = /<!--\s*PBX-MODE:retry-structured-failed\s*-->/.test(currentMarkdownContent);
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if (refMatch && typeof getResultFromDB === 'function') {
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const refId = refMatch[1].trim();
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const refRecord = await getResultFromDB(refId);
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if (refRecord && Array.isArray(refRecord.images)) {
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currentImagesData = refRecord.images;
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if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 关联到历史记录 ${refId}，已载入 ${currentImagesData.length} 张图片`);
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} else {
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currentImagesData = [];
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}
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// ============ 特殊模式：结构化翻译失败片段重试，直接写回原历史 ============
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if (isRetryStructuredFailed) {
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if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 检测到结构化翻译失败片段重试模式`);
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// 解析失败片段索引
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const failedIndicesMatch = currentMarkdownContent.match(/<!--\s*PBX-FAILED-INDICES:([^>]+)\s*-->/);
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if (!failedIndicesMatch) {
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throw new Error('未找到失败片段索引标记。');
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}
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const failedIndices = failedIndicesMatch[1].split(',').map(s => parseInt(s.trim(), 10)).filter(n => !isNaN(n));
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if (failedIndices.length === 0) {
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throw new Error('未找到可重试的失败片段索引。');
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}
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if (!refRecord || !refRecord.metadata) {
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throw new Error('未找到原历史记录或缺少元数据。');
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}
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const meta = refRecord.metadata;
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if (!meta.contentListJson || !Array.isArray(meta.translatedContentList)) {
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throw new Error('缺少结构化翻译数据，无法重试。');
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}
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if (typeof window.MinerUStructuredTranslation !== 'function') {
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throw new Error('缺少结构化翻译模块。');
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}
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if (typeof addProgressLog === "function") {
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addProgressLog(`${logPrefix} 准备重试 ${failedIndices.length} 个失败片段...`);
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}
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// 组装待翻译子集
|
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const translator = new window.MinerUStructuredTranslation();
|
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const fullTranslatable = translator.extractTranslatableContent(meta.contentListJson);
|
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const subset = [];
|
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const indexMap = [];
|
||
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failedIndices.forEach(idx => {
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if (idx >= 0 && idx < fullTranslatable.length) {
|
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subset.push(fullTranslatable[idx]);
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indexMap.push(idx);
|
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}
|
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});
|
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if (subset.length === 0) {
|
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throw new Error('没有有效的失败片段可重试。');
|
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}
|
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// 分批并翻译
|
||
const batches = translator.splitIntoBatches(subset);
|
||
const targetLang = targetLanguageValue;
|
||
const modelName = selectedTranslationModelName;
|
||
const apiKeyVal = translationKeyObject ? translationKeyObject.value : null;
|
||
|
||
if (!apiKeyVal) {
|
||
throw new Error('缺少翻译 API Key，无法执行失败片段重试。');
|
||
}
|
||
|
||
let translationOptions = {};
|
||
if (modelName === 'custom') {
|
||
translationOptions.modelConfig = translationModelConfig;
|
||
}
|
||
|
||
const translatedSubset = await translator.translateBatches(
|
||
batches,
|
||
targetLang,
|
||
modelName,
|
||
apiKeyVal,
|
||
translationOptions,
|
||
(progress) => {
|
||
if (typeof addProgressLog === 'function') {
|
||
addProgressLog(`${logPrefix} 翻译进度: ${progress.percentage}% (${progress.message})`);
|
||
}
|
||
},
|
||
acquireSlot,
|
||
releaseSlot
|
||
);
|
||
|
||
// 写回对应索引
|
||
const tlist = meta.translatedContentList.slice();
|
||
translatedSubset.forEach((item, i) => {
|
||
const origIdx = indexMap[i];
|
||
tlist[origIdx] = item;
|
||
});
|
||
|
||
// 重新计算失败项
|
||
const newFailed = [];
|
||
const _norm = (v) => {
|
||
if (v == null) return '';
|
||
try {
|
||
if (Array.isArray(v)) return v.join(' ').trim();
|
||
if (typeof v === 'string') return v.trim();
|
||
return String(v).trim();
|
||
} catch(_) { return ''; }
|
||
};
|
||
|
||
for (let i = 0; i < tlist.length; i++) {
|
||
const o = meta.contentListJson[i] || {};
|
||
const t = tlist[i] || {};
|
||
let failed = !!t.failed;
|
||
if (!failed) {
|
||
// 只有译文为空时才标记为失败（译文与原文相同是正常行为）
|
||
if (o.type === 'text') {
|
||
const a = _norm(o.text);
|
||
const b = _norm(t.text);
|
||
failed = a && !b; // 移除 a === b 判断
|
||
} else if (o.type === 'image') {
|
||
const a = _norm(o.image_caption);
|
||
const b = _norm(t.image_caption);
|
||
failed = a && !b; // 移除 a === b 判断
|
||
} else if (o.type === 'table') {
|
||
const a = _norm(o.table_caption);
|
||
const b = _norm(t.table_caption);
|
||
failed = a && !b; // 移除 a === b 判断
|
||
}
|
||
}
|
||
if (failed) {
|
||
const baseText = (o.type === 'text') ? (o.text || '')
|
||
: (o.type === 'image') ? (Array.isArray(o.image_caption) ? o.image_caption.join(' ') : o.image_caption)
|
||
: (o.type === 'table') ? (o.table_caption || '')
|
||
: '';
|
||
const norm = _norm(baseText);
|
||
if (norm) newFailed.push({ index: i, type: o.type, page_idx: o.page_idx || 0, text: norm });
|
||
}
|
||
}
|
||
|
||
// 更新并保存记录
|
||
refRecord.metadata.translatedContentList = tlist;
|
||
refRecord.metadata.failedStructuredItems = newFailed;
|
||
refRecord.metadata.structuredFailedCount = newFailed.length;
|
||
refRecord.time = new Date().toISOString();
|
||
await saveResultToDB(refRecord);
|
||
|
||
if (typeof addProgressLog === "function") {
|
||
addProgressLog(`${logPrefix} 已将 ${translatedSubset.length} 个片段写回历史记录 ${refId}，剩余失败 ${newFailed.length} 个`);
|
||
}
|
||
|
||
// 准备返回对象并跳过后续的常规保存逻辑
|
||
return {
|
||
file: fileToProcess,
|
||
markdown: refRecord.ocr || '',
|
||
translation: '',
|
||
images: refRecord.images || [],
|
||
ocrChunks: refRecord.ocrChunks || [],
|
||
translatedChunks: refRecord.translatedChunks || [],
|
||
metadata: refRecord.metadata,
|
||
error: null,
|
||
isRetryStructuredFailed: true,
|
||
refId: refId
|
||
};
|
||
}
|
||
|
||
// ============ 特殊模式：标准分块失败片段重试，直接写回原历史 ============
|
||
if (isRetryFailed) {
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 检测到失败片段重试模式，准备逐段翻译并写回历史记录 ${refId}`);
|
||
|
||
// 按 PBX-CHUNK-INDEX 解析出各段内容
|
||
const re = /<!--\s*PBX-CHUNK-INDEX:(\d+)\s*-->\s*([\s\S]*?)(?=(?:<!--\s*PBX-CHUNK-INDEX:\d+\s*-->)|$)/g;
|
||
const retryList = [];
|
||
let m;
|
||
while ((m = re.exec(currentMarkdownContent)) !== null) {
|
||
const idx = parseInt(m[1], 10);
|
||
const text = (m[2] || '').trim();
|
||
if (!isNaN(idx) && text) retryList.push({ index: idx, text });
|
||
}
|
||
|
||
if (retryList.length === 0) {
|
||
throw new Error('未找到可重试的失败片段。');
|
||
}
|
||
|
||
// 获取翻译模型与参数
|
||
const targetLanguageValue = targetLanguage; // 来自参数
|
||
const modelName = selectedTranslationModelName;
|
||
const apiKeyVal = translationKeyObject ? translationKeyObject.value : null;
|
||
if (!apiKeyVal) throw new Error('缺少翻译API Key，无法执行失败片段重试。');
|
||
|
||
// 依次翻译每段（受并发槽控制）
|
||
const translatedPieces = [];
|
||
for (let i = 0; i < retryList.length; i++) {
|
||
const item = retryList[i];
|
||
if (typeof acquireSlot === 'function') await acquireSlot();
|
||
try {
|
||
let out;
|
||
if (modelName === 'custom') {
|
||
out = await translateMarkdown(
|
||
item.text,
|
||
targetLanguageValue,
|
||
'custom',
|
||
apiKeyVal,
|
||
translationModelConfig,
|
||
`${logPrefix}[retry ${i+1}/${retryList.length}]`,
|
||
defaultSystemPromptSetting,
|
||
defaultUserPromptTemplateSetting,
|
||
useCustomPromptsSetting
|
||
);
|
||
} else {
|
||
out = await translateMarkdown(
|
||
item.text,
|
||
targetLanguageValue,
|
||
modelName,
|
||
apiKeyVal,
|
||
`${logPrefix}[retry ${i+1}/${retryList.length}]`,
|
||
defaultSystemPromptSetting,
|
||
defaultUserPromptTemplateSetting,
|
||
useCustomPromptsSetting
|
||
);
|
||
}
|
||
translatedPieces.push({ index: item.index, text: out });
|
||
} finally {
|
||
if (typeof releaseSlot === 'function') releaseSlot();
|
||
}
|
||
}
|
||
|
||
// 写回原历史记录：替换对应分块译文
|
||
if (!refRecord) throw new Error('未找到原历史记录，无法写回。');
|
||
if (!Array.isArray(refRecord.ocrChunks) || !Array.isArray(refRecord.translatedChunks)) {
|
||
throw new Error('原历史记录缺少分块信息，无法写回。');
|
||
}
|
||
translatedPieces.forEach(p => {
|
||
const safeIdx = Math.max(0, Math.min(p.index, refRecord.ocrChunks.length - 1));
|
||
refRecord.translatedChunks[safeIdx] = p.text;
|
||
});
|
||
refRecord.translation = (refRecord.translatedChunks || []).join('\n\n');
|
||
refRecord.time = new Date().toISOString();
|
||
await saveResultToDB(refRecord);
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 已将 ${translatedPieces.length} 个失败片段写回历史记录 ${refId}`);
|
||
|
||
// 准备返回对象并跳过后续的常规保存逻辑
|
||
return {
|
||
file: fileToProcess,
|
||
markdown: currentMarkdownContent,
|
||
translation: translatedPieces.map(p => p.text).join('\n\n'),
|
||
images: currentImagesData,
|
||
ocrChunks: retryList.map(r => r.text),
|
||
translatedChunks: translatedPieces.map(p => p.text),
|
||
error: null
|
||
};
|
||
}
|
||
} else {
|
||
currentImagesData = [];
|
||
}
|
||
} catch (e) {
|
||
console.warn(`${logPrefix} 读取历史图片引用失败:`, e);
|
||
currentImagesData = [];
|
||
}
|
||
} catch (readError) {
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 读取 ${fileType.toUpperCase()} 文件失败: ${readError.message}`);
|
||
throw new Error(`读取 ${fileType.toUpperCase()} 文件失败: ${readError.message}`);
|
||
}
|
||
} else if (fileType === 'docx') {
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 解析 DOCX 文档...`);
|
||
if (typeof mammoth === 'undefined' || !mammoth || typeof mammoth.convertToHtml !== 'function') {
|
||
throw new Error('缺少 mammoth 库，无法解析 DOCX');
|
||
}
|
||
try {
|
||
const arrayBuffer = await fileToProcess.arrayBuffer();
|
||
originalBinary = arrayBuffer;
|
||
originalEncoding = 'arraybuffer';
|
||
|
||
// 用于存储提取的图片数据
|
||
const docxImages = [];
|
||
let imageCounter = 0;
|
||
|
||
// 配置 mammoth，提取图片数据并使用简洁的引用
|
||
// 这样可以避免巨大的 base64 字符串导致 token 估算错误（每张图片可能几十万字符）
|
||
const result = await mammoth.convertToHtml({
|
||
arrayBuffer,
|
||
convertImage: mammoth.images.imgElement(function(image) {
|
||
return image.read("base64").then(function(imageBuffer) {
|
||
// 生成图片 ID
|
||
imageCounter++;
|
||
const imgId = `docx_img_${imageCounter}`;
|
||
const imgPath = `images/${imgId}.png`;
|
||
|
||
// 存储图片数据（格式与 OCR 保持一致）
|
||
docxImages.push({
|
||
id: imgId,
|
||
data: imageBuffer // base64 字符串
|
||
});
|
||
|
||
// 在 HTML 中使用简洁的路径引用，而不是完整的 base64
|
||
return {
|
||
src: imgPath
|
||
};
|
||
});
|
||
})
|
||
});
|
||
|
||
const html = result && result.value ? result.value : '';
|
||
currentMarkdownContent = convertHtmlToMarkdown(html);
|
||
|
||
// 将提取的图片数据保存到 currentImagesData
|
||
currentImagesData = docxImages;
|
||
|
||
// 提取并清理可能残留的 base64 图片数据（防止导出再导入的文档中有残留）
|
||
// 这些 base64 字符串可能有几十万字符，会严重影响 token 估算
|
||
const beforeClean = currentMarkdownContent.length;
|
||
let extractedImageCount = 0;
|
||
|
||
// 提取 Markdown 格式的 base64 图片：
|
||
currentMarkdownContent = currentMarkdownContent.replace(/!\[([^\]]*)\]\(data:image\/([^;]+);base64,([A-Za-z0-9+/=]+)\)/g,
|
||
(match, altText, mimeType, base64Data) => {
|
||
extractedImageCount++;
|
||
const imgId = `docx_extracted_${extractedImageCount}`;
|
||
const imgPath = `images/${imgId}.png`;
|
||
|
||
// 保存提取的图片数据
|
||
currentImagesData.push({
|
||
id: imgId,
|
||
data: base64Data
|
||
});
|
||
|
||
// 替换为简洁的引用
|
||
return ``;
|
||
});
|
||
|
||
// 提取纯 base64 字符串（可能是文本中的残留）
|
||
// 匹配至少 100 个字符的 base64 字符串
|
||
currentMarkdownContent = currentMarkdownContent.replace(/data:image\/([^;]+);base64,([A-Za-z0-9+/=]{100,})/g,
|
||
(match, mimeType, base64Data) => {
|
||
extractedImageCount++;
|
||
const imgId = `docx_extracted_${extractedImageCount}`;
|
||
|
||
// 保存提取的图片数据
|
||
currentImagesData.push({
|
||
id: imgId,
|
||
data: base64Data
|
||
});
|
||
|
||
return `[图片${extractedImageCount}]`;
|
||
});
|
||
|
||
const afterClean = currentMarkdownContent.length;
|
||
const removedChars = beforeClean - afterClean;
|
||
|
||
if (removedChars > 0 && typeof addProgressLog === "function") {
|
||
addProgressLog(`${logPrefix} 从文本中提取了 ${extractedImageCount} 张图片 (清理了 ${Math.round(removedChars / 1024)} KB base64 数据)`);
|
||
}
|
||
|
||
if (typeof addProgressLog === "function") {
|
||
const charCount = currentMarkdownContent.length;
|
||
const estimatedTokens = typeof estimateTokenCount === 'function' ? estimateTokenCount(currentMarkdownContent) : 0;
|
||
const totalImages = docxImages.length + extractedImageCount;
|
||
addProgressLog(`${logPrefix} DOCX 文本转换完成，共提取 ${totalImages} 张图片 (标准: ${docxImages.length}, 嵌入: ${extractedImageCount}) (字符数: ${charCount}, 估算 tokens: ${estimatedTokens})`);
|
||
}
|
||
|
||
// 调试：如果字符数与估算 tokens 差距过大，输出前 500 字符到控制台
|
||
if (currentMarkdownContent.length > 0 && typeof estimateTokenCount === 'function') {
|
||
const estimatedTokens = estimateTokenCount(currentMarkdownContent);
|
||
const ratio = estimatedTokens / currentMarkdownContent.length;
|
||
if (ratio > 10) { // 如果 token/字符 比例 > 10，说明有异常
|
||
console.warn(`${logPrefix} ⚠️ Token 估算异常！字符数: ${currentMarkdownContent.length}, 估算 tokens: ${estimatedTokens}, 比例: ${ratio.toFixed(2)}`);
|
||
console.log(`${logPrefix} Markdown 前 500 字符:`, currentMarkdownContent.substring(0, 500));
|
||
console.log(`${logPrefix} Markdown 后 500 字符:`, currentMarkdownContent.substring(currentMarkdownContent.length - 500));
|
||
}
|
||
}
|
||
} catch (error) {
|
||
console.error('DOCX 解析失败:', error);
|
||
throw new Error(`DOCX 解析失败: ${error.message || error}`);
|
||
}
|
||
} else if (fileType === 'html' || fileType === 'htm') {
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 解析 HTML 文档...`);
|
||
try {
|
||
originalContent = await fileToProcess.text();
|
||
originalEncoding = 'text';
|
||
currentMarkdownContent = convertHtmlToMarkdown(originalContent);
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} HTML 文本转换完成`);
|
||
} catch (error) {
|
||
console.error('HTML 解析失败:', error);
|
||
throw new Error(`HTML 解析失败: ${error.message || error}`);
|
||
}
|
||
} else if (fileType === 'pptx') {
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 解析 PPTX 文档...`);
|
||
if (typeof JSZip === 'undefined') {
|
||
throw new Error('缺少 JSZip 库，无法解析 PPTX');
|
||
}
|
||
try {
|
||
const arrayBuffer = await fileToProcess.arrayBuffer();
|
||
originalBinary = arrayBuffer;
|
||
originalEncoding = 'arraybuffer';
|
||
const zip = await JSZip.loadAsync(arrayBuffer);
|
||
const slidePaths = Object.keys(zip.files)
|
||
.filter(path => /^ppt\/slides\/slide\d+\.xml$/i.test(path))
|
||
.sort((a, b) => a.localeCompare(b, undefined, { numeric: true }));
|
||
if (slidePaths.length === 0) {
|
||
throw new Error('未找到幻灯片内容');
|
||
}
|
||
const slides = [];
|
||
const parser = new DOMParser();
|
||
for (const slidePath of slidePaths) {
|
||
const xmlText = await zip.file(slidePath).async('string');
|
||
const doc = parser.parseFromString(xmlText, 'application/xml');
|
||
const textNodes = Array.from(doc.getElementsByTagName('a:t'));
|
||
const text = textNodes.map(node => node.textContent || '').join(' ').trim();
|
||
if (text) slides.push(text);
|
||
}
|
||
currentMarkdownContent = slides.length > 0 ? slides.join('\n\n---\n\n') : '[PPTX 无文本内容]';
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} PPTX 文本提取完成，共 ${slides.length} 页`);
|
||
} catch (error) {
|
||
console.error('PPTX 解析失败:', error);
|
||
throw new Error(`PPTX 解析失败: ${error.message || error}`);
|
||
}
|
||
} else if (fileType === 'epub') {
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 解析 EPUB 文档...`);
|
||
if (typeof JSZip === 'undefined') {
|
||
throw new Error('缺少 JSZip 库，无法解析 EPUB');
|
||
}
|
||
try {
|
||
const arrayBuffer = await fileToProcess.arrayBuffer();
|
||
originalBinary = arrayBuffer;
|
||
originalEncoding = 'arraybuffer';
|
||
const zip = await JSZip.loadAsync(arrayBuffer);
|
||
const containerFile = zip.file('META-INF/container.xml');
|
||
if (!containerFile) throw new Error('未找到 container.xml');
|
||
const containerXml = await containerFile.async('string');
|
||
const parser = new DOMParser();
|
||
const containerDoc = parser.parseFromString(containerXml, 'application/xml');
|
||
const rootfileEl = containerDoc.querySelector('rootfile');
|
||
const opfPath = rootfileEl ? rootfileEl.getAttribute('full-path') : null;
|
||
if (!opfPath) throw new Error('未找到 OPF 清单');
|
||
const opfFile = zip.file(opfPath);
|
||
if (!opfFile) throw new Error(`OPF 文件缺失: ${opfPath}`);
|
||
const opfXml = await opfFile.async('string');
|
||
const opfDoc = parser.parseFromString(opfXml, 'application/xml');
|
||
const manifest = {};
|
||
opfDoc.querySelectorAll('manifest > item').forEach(item => {
|
||
const id = item.getAttribute('id');
|
||
const href = item.getAttribute('href');
|
||
if (id && href) manifest[id] = href;
|
||
});
|
||
const spineItems = [];
|
||
opfDoc.querySelectorAll('spine > itemref').forEach(itemref => {
|
||
const idref = itemref.getAttribute('idref');
|
||
if (idref && manifest[idref]) spineItems.push(manifest[idref]);
|
||
});
|
||
if (spineItems.length === 0) throw new Error('未找到章节信息');
|
||
const baseDir = opfPath.includes('/') ? opfPath.substring(0, opfPath.lastIndexOf('/') + 1) : '';
|
||
const chapters = [];
|
||
for (const href of spineItems) {
|
||
const relative = href.replace(/\\/g, '/');
|
||
const path = baseDir ? `${baseDir}${relative}` : relative;
|
||
let entry = zip.file(path) || zip.file(decodeURIComponent(path));
|
||
if (!entry && baseDir) {
|
||
const alt = `${baseDir}${decodeURIComponent(relative)}`;
|
||
entry = zip.file(alt);
|
||
}
|
||
if (!entry) continue;
|
||
const html = await entry.async('string');
|
||
const markdown = convertHtmlToMarkdown(html).trim();
|
||
if (markdown) chapters.push(markdown);
|
||
}
|
||
if (chapters.length === 0) throw new Error('未解析到章节正文');
|
||
currentMarkdownContent = chapters.join('\n\n---\n\n');
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} EPUB 文本解析完成，共 ${chapters.length} 章`);
|
||
} catch (error) {
|
||
console.error('EPUB 解析失败:', error);
|
||
throw new Error(`EPUB 解析失败: ${error.message || error}`);
|
||
}
|
||
} else {
|
||
throw new Error(`不支持的文件类型: ${fileType}`);
|
||
}
|
||
|
||
// --- 翻译流程 (如果需要) ---
|
||
if (selectedTranslationModelName !== 'none') {
|
||
const translationKeyValue = translationKeyObject ? translationKeyObject.value : null;
|
||
|
||
// 检查是否使用后端代理模式（不需要前端 API Key）
|
||
const useBackendProxy = selectedTranslationModelName === 'tongyi' || selectedTranslationModelName === 'aliyun';
|
||
|
||
if (!translationKeyValue && !useBackendProxy) {
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 警告: 需要翻译但未提供有效的翻译 API Key。跳过翻译。`);
|
||
currentTranslationContent = '[未翻译：缺少API Key]';
|
||
ocrChunks = [currentMarkdownContent];
|
||
translatedChunks = [currentTranslationContent];
|
||
} else {
|
||
if (typeof addProgressLog === "function") {
|
||
if (useBackendProxy) {
|
||
addProgressLog(`${logPrefix} 开始翻译 (${selectedTranslationModelName}, 使用后端代理)`);
|
||
} else {
|
||
addProgressLog(`${logPrefix} 开始翻译 (${selectedTranslationModelName}, Key: ...${translationKeyValue.slice(-4)})`);
|
||
}
|
||
}
|
||
|
||
// ===== MinerU 结构化翻译检测 =====
|
||
let shouldUseStructuredTranslation = false;
|
||
if (ocrResult && ocrResult.metadata) {
|
||
try {
|
||
const ocrConfig = (typeof window !== 'undefined' && window.ocrSettingsManager)
|
||
? window.ocrSettingsManager.getCurrentConfig()
|
||
: null;
|
||
|
||
if (ocrConfig && ocrConfig.engine === 'mineru' && ocrConfig.translationMode === 'structured') {
|
||
// 检查是否支持结构化翻译
|
||
if (typeof MinerUStructuredTranslation !== 'undefined') {
|
||
const structuredTranslator = new MinerUStructuredTranslation();
|
||
shouldUseStructuredTranslation = structuredTranslator.supportsStructuredTranslation(ocrResult);
|
||
|
||
if (shouldUseStructuredTranslation) {
|
||
if (typeof addProgressLog === "function") {
|
||
addProgressLog(`${logPrefix} 检测到 MinerU 结构化翻译模式`);
|
||
}
|
||
} else if (typeof addProgressLog === "function") {
|
||
addProgressLog(`${logPrefix} MinerU 结构化翻译模式已启用，但 content_list.json 不可用，将使用标准翻译`);
|
||
}
|
||
} else if (typeof addProgressLog === "function") {
|
||
addProgressLog(`${logPrefix} 警告：MinerU 结构化翻译模块未加载，使用标准翻译`);
|
||
}
|
||
}
|
||
} catch (e) {
|
||
console.warn(`${logPrefix} 检测 MinerU 结构化翻译时出错:`, e);
|
||
}
|
||
}
|
||
|
||
// ===== 执行结构化翻译或标准翻译 =====
|
||
if (shouldUseStructuredTranslation) {
|
||
// MinerU 结构化翻译路径
|
||
try {
|
||
if (typeof addProgressLog === "function") {
|
||
addProgressLog(`${logPrefix} 使用 MinerU 结构化翻译 (基于 content_list.json)`);
|
||
}
|
||
|
||
const structuredTranslator = new MinerUStructuredTranslation();
|
||
|
||
// 1. 提取可翻译内容
|
||
const translatableContent = structuredTranslator.extractTranslatableContent(
|
||
ocrResult.metadata.contentListJson
|
||
);
|
||
|
||
// 2. 分批
|
||
const batches = structuredTranslator.splitIntoBatches(translatableContent);
|
||
|
||
if (typeof addProgressLog === "function") {
|
||
addProgressLog(`${logPrefix} 提取 ${translatableContent.length} 个片段，分为 ${batches.length} 批`);
|
||
}
|
||
|
||
// 3. 准备翻译选项
|
||
const translationOptions = selectedTranslationModelName === 'custom'
|
||
? { modelConfig: translationModelConfig }
|
||
: {};
|
||
|
||
console.log('[MinerU Structured] 翻译选项:', {
|
||
selectedTranslationModelName,
|
||
hasModelConfig: !!translationModelConfig,
|
||
translationOptions
|
||
});
|
||
|
||
// 4. 执行批量翻译
|
||
// 检查是否使用后端代理模式
|
||
const useBackendProxy = !translationKeyValue && (selectedTranslationModelName === 'tongyi' || selectedTranslationModelName === 'aliyun');
|
||
|
||
const translatedContentList = await structuredTranslator.translateBatches(
|
||
batches,
|
||
targetLanguageValue,
|
||
selectedTranslationModelName,
|
||
translationKeyValue,
|
||
{
|
||
...translationOptions,
|
||
useBackendProxy,
|
||
provider: selectedTranslationModelName,
|
||
proxyBase: (typeof window !== 'undefined' && window.ProxyConfig)
|
||
? window.ProxyConfig.getProxyUrl()
|
||
: (window.PBX_PROXY_BASE_URL || '/api'),
|
||
// 允许从设置自定义重试，若无则用默认
|
||
maxRetries: (typeof loadSettings === 'function' ? (loadSettings().structuredMaxRetries || undefined) : undefined),
|
||
retryDelay: (typeof loadSettings === 'function' ? (loadSettings().structuredRetryDelayMs || undefined) : undefined)
|
||
},
|
||
(progress) => {
|
||
if (typeof addProgressLog === "function") {
|
||
addProgressLog(`${logPrefix} 翻译进度: ${progress.percentage}% (${progress.message})`);
|
||
}
|
||
},
|
||
acquireSlot, // 传递并发槽位管理函数
|
||
releaseSlot // 传递并发槽位管理函数
|
||
);
|
||
|
||
// 5. 保存结果
|
||
// 结构化翻译完成后：不生成常规译文，以免展示译文/分块对比标签
|
||
currentTranslationContent = '';
|
||
|
||
// 将翻译后的 JSON 保存在元数据中供未来使用
|
||
if (!ocrResult.metadata.translatedContentList) {
|
||
ocrResult.metadata.translatedContentList = translatedContentList;
|
||
}
|
||
// 标记失败项（供后续"重试失败段"使用）
|
||
// 修复：统一从 translatedContentList 收集失败项，避免重试成功后仍显示失败
|
||
try {
|
||
const failedItems = [];
|
||
(translatedContentList || []).forEach((it, idx) => {
|
||
if (it && it.failed === true) {
|
||
failedItems.push({
|
||
index: idx,
|
||
type: it.type,
|
||
page_idx: it.page_idx || 0,
|
||
text: structuredTranslator.extractItemText ? structuredTranslator.extractItemText(it) : (it.text || '')
|
||
});
|
||
}
|
||
});
|
||
// 去重（虽然现在不应该有重复，但保留容错）
|
||
const seen = new Set();
|
||
const uniqFailed = failedItems.filter(x => {
|
||
const key = `${x.index}`;
|
||
if (seen.has(key)) return false;
|
||
seen.add(key);
|
||
return true;
|
||
});
|
||
ocrResult.metadata.failedStructuredItems = uniqFailed;
|
||
ocrResult.metadata.structuredFailedCount = uniqFailed.length;
|
||
|
||
if (typeof addProgressLog === 'function' && uniqFailed.length > 0) {
|
||
addProgressLog(`${logPrefix} 有 ${uniqFailed.length} 个片段未能成功翻译`);
|
||
}
|
||
} catch (e) {
|
||
console.warn(`${logPrefix} 收集结构化失败项时出错(忽略):`, e);
|
||
}
|
||
|
||
// 不设置对比分块，避免显示“分块对比”标签
|
||
ocrChunks = [];
|
||
translatedChunks = [];
|
||
|
||
if (typeof addProgressLog === "function") {
|
||
addProgressLog(`${logPrefix} MinerU 结构化翻译完成`);
|
||
}
|
||
|
||
} catch (error) {
|
||
// 结构化翻译失败，回退到标准翻译
|
||
if (typeof addProgressLog === "function") {
|
||
addProgressLog(`${logPrefix} 结构化翻译失败，回退到标准翻译: ${error.message}`);
|
||
}
|
||
console.error(`${logPrefix} MinerU 结构化翻译错误:`, error);
|
||
shouldUseStructuredTranslation = false; // 触发标准翻译逻辑
|
||
}
|
||
}
|
||
|
||
// ===== 标准翻译路径（原有逻辑） =====
|
||
if (!shouldUseStructuredTranslation) {
|
||
if (typeof estimateTokenCount !== 'function') throw new Error('estimateTokenCount函数未定义');
|
||
const estimatedTokens = estimateTokenCount(currentMarkdownContent);
|
||
const tokenLimit = parseInt(maxTokensPerChunkValue) || 2000;
|
||
|
||
try {
|
||
if (estimatedTokens > tokenLimit * 1.1) {
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 文档较大 (~${Math.round(estimatedTokens/1000)}K tokens), 分段翻译`);
|
||
if (typeof translateLongDocument !== 'function') throw new Error('translateLongDocument函数未定义');
|
||
|
||
console.log('main.js 调用 translateLongDocument 参数:', {
|
||
useCustomPromptsSetting,
|
||
defaultUserPromptTemplateSetting,
|
||
defaultSystemPromptSetting,
|
||
translationModelConfig,
|
||
currentMarkdownContent,
|
||
targetLanguageValue,
|
||
selectedTranslationModelName,
|
||
translationKeyValue,
|
||
tokenLimit,
|
||
logPrefix
|
||
});
|
||
let translationResult;
|
||
if (selectedTranslationModelName === 'custom') {
|
||
translationResult = await translateLongDocument(
|
||
currentMarkdownContent,
|
||
targetLanguageValue,
|
||
selectedTranslationModelName,
|
||
translationKeyValue,
|
||
translationModelConfig,
|
||
tokenLimit,
|
||
acquireSlot,
|
||
releaseSlot,
|
||
logPrefix,
|
||
defaultSystemPromptSetting,
|
||
defaultUserPromptTemplateSetting,
|
||
useCustomPromptsSetting
|
||
);
|
||
} else {
|
||
translationResult = await translateLongDocument(
|
||
currentMarkdownContent,
|
||
targetLanguageValue,
|
||
selectedTranslationModelName,
|
||
translationKeyValue,
|
||
tokenLimit,
|
||
acquireSlot,
|
||
releaseSlot,
|
||
logPrefix,
|
||
defaultSystemPromptSetting,
|
||
defaultUserPromptTemplateSetting,
|
||
useCustomPromptsSetting
|
||
);
|
||
}
|
||
console.log('main.js translateLongDocument 返回:', translationResult);
|
||
currentTranslationContent = translationResult.translatedText;
|
||
ocrChunks = translationResult.originalChunks;
|
||
translatedChunks = translationResult.translatedTextChunks;
|
||
} else {
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 文档较小 (~${Math.round(estimatedTokens/1000)}K tokens), 直接翻译`);
|
||
await acquireSlot();
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 翻译槽已获取。调用 API...`);
|
||
try {
|
||
if (typeof translateMarkdown !== 'function') throw new Error('translateMarkdown函数未定义');
|
||
//console.log('main.js 调用 translateMarkdown 参数:', {
|
||
// useCustomPromptsSetting,
|
||
// defaultUserPromptTemplateSetting,
|
||
// defaultSystemPromptSetting,
|
||
// translationModelConfig,
|
||
// currentMarkdownContent,
|
||
// targetLanguageValue,
|
||
// selectedTranslationModelName,
|
||
// translationKeyValue,
|
||
// logPrefix
|
||
//});
|
||
//console.log('main.js/document.js 实际传递的 defaultUserPromptTemplateSetting:', defaultUserPromptTemplateSetting);
|
||
//console.log('main.js/document.js 实际传递的 defaultSystemPromptSetting:', defaultSystemPromptSetting);
|
||
if (selectedTranslationModelName === 'custom') {
|
||
currentTranslationContent = await translateMarkdown(
|
||
currentMarkdownContent,
|
||
targetLanguageValue,
|
||
selectedTranslationModelName,
|
||
translationKeyValue,
|
||
translationModelConfig,
|
||
logPrefix,
|
||
defaultSystemPromptSetting,
|
||
defaultUserPromptTemplateSetting,
|
||
useCustomPromptsSetting
|
||
);
|
||
} else {
|
||
currentTranslationContent = await translateMarkdown(
|
||
currentMarkdownContent,
|
||
targetLanguageValue,
|
||
selectedTranslationModelName,
|
||
translationKeyValue,
|
||
logPrefix,
|
||
defaultSystemPromptSetting,
|
||
defaultUserPromptTemplateSetting,
|
||
useCustomPromptsSetting
|
||
);
|
||
}
|
||
//console.log('main.js translateMarkdown 返回:', currentTranslationContent);
|
||
ocrChunks = [currentMarkdownContent];
|
||
translatedChunks = [currentTranslationContent];
|
||
} finally {
|
||
releaseSlot();
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} _翻译槽已释放。`);
|
||
}
|
||
}
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 翻译完成`);
|
||
} catch (error) {
|
||
// 判断是否为翻译 Key 失效错误
|
||
// 这里的判断条件可能需要根据实际API的错误响应来调整
|
||
if (error.message && (error.message.includes('无效') || error.message.includes('未授权') || error.message.includes('401') || error.message.toLowerCase().includes('invalid api key') || error.message.toLowerCase().includes('unauthorized') || error.message.includes('API key not valid') || error.message.includes('forbidden'))) {
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 翻译 API Key (...${translationKeyValue.slice(-4)}) 可能已失效 (${selectedTranslationModelName}): ${error.message}`);
|
||
return {
|
||
file: fileToProcess,
|
||
keyInvalid: {
|
||
type: 'translation',
|
||
modelName: selectedTranslationModelName,
|
||
keyIdToInvalidate: translationKeyObject.id
|
||
},
|
||
error: `翻译 Key 失效: ${error.message}`
|
||
};
|
||
}
|
||
// 其他翻译错误，标记为翻译失败，但OCR结果可能仍有效
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 翻译失败: ${error.message}。将使用原文并标记错误。`);
|
||
currentTranslationContent = `[翻译失败: ${error.message}] ${currentMarkdownContent}`;
|
||
ocrChunks = [currentMarkdownContent];
|
||
translatedChunks = [currentTranslationContent];
|
||
// 不向上抛出，允许OCR成功但翻译失败的情况，在最终结果中体现
|
||
}
|
||
} // 结束 if (!shouldUseStructuredTranslation)
|
||
} // 结束 else (translationKeyValue 有效)
|
||
} else { // 结束 if (selectedTranslationModelName !== 'none')
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 不需要翻译`);
|
||
// 即使不翻译，也需要检查是否需要分块（用于向量搜索等后续功能）
|
||
const estimatedTokens = typeof estimateTokenCount === 'function'
|
||
? estimateTokenCount(currentMarkdownContent)
|
||
: currentMarkdownContent.length / 4; // 简单估算
|
||
const tokenLimit = parseInt(maxTokensPerChunkValue, 10) || 2000; // 与翻译流程保持一致
|
||
|
||
if (estimatedTokens > tokenLimit * 1.1 && typeof splitMarkdownIntoChunks === 'function') {
|
||
if (typeof addProgressLog === "function") {
|
||
addProgressLog(`${logPrefix} 文档较大 (~${Math.round(estimatedTokens/1000)}K tokens), 进行分块处理以支持向量搜索`);
|
||
}
|
||
ocrChunks = splitMarkdownIntoChunks(currentMarkdownContent, tokenLimit, logPrefix);
|
||
translatedChunks = ocrChunks.map(() => ''); // 翻译块为空
|
||
} else {
|
||
ocrChunks = [currentMarkdownContent];
|
||
translatedChunks = [''];
|
||
}
|
||
}
|
||
|
||
const processedAt = new Date().toISOString();
|
||
|
||
// 准备元数据（在条件块外定义，以便返回值使用）
|
||
const metadataToSave = {};
|
||
|
||
// 如果是 MinerU 结构化翻译，保存额外的元数据
|
||
if (ocrResult && ocrResult.metadata) {
|
||
// 保存 layoutJson 和 contentListJson
|
||
if (ocrResult.metadata.layoutJson) {
|
||
metadataToSave.layoutJson = ocrResult.metadata.layoutJson;
|
||
}
|
||
if (ocrResult.metadata.contentListJson) {
|
||
metadataToSave.contentListJson = ocrResult.metadata.contentListJson;
|
||
}
|
||
// 保存翻译后的结构化内容
|
||
if (ocrResult.metadata.translatedContentList) {
|
||
metadataToSave.translatedContentList = ocrResult.metadata.translatedContentList;
|
||
}
|
||
// 保存原始 PDF（转为 base64）
|
||
if (ocrResult.metadata.originalPdf) {
|
||
try {
|
||
const pdfBlob = ocrResult.metadata.originalPdf;
|
||
const pdfArrayBuffer = await pdfBlob.arrayBuffer();
|
||
metadataToSave.originalPdfBase64 = arrayBufferToBase64(pdfArrayBuffer);
|
||
if (typeof addProgressLog === "function") {
|
||
addProgressLog(`${logPrefix} 已保存原始 PDF (${Math.round(pdfBlob.size / 1024)} KB)`);
|
||
}
|
||
} catch (e) {
|
||
console.warn(`${logPrefix} 保存原始 PDF 失败:`, e);
|
||
}
|
||
}
|
||
// 标记支持结构化翻译
|
||
metadataToSave.supportsStructuredTranslation = ocrResult.metadata.supportsStructuredTranslation;
|
||
// 持久化结构化失败项统计（如存在）
|
||
if (Array.isArray(ocrResult.metadata.failedStructuredItems)) {
|
||
metadataToSave.failedStructuredItems = ocrResult.metadata.failedStructuredItems;
|
||
}
|
||
if (typeof ocrResult.metadata.structuredFailedCount === 'number') {
|
||
metadataToSave.structuredFailedCount = ocrResult.metadata.structuredFailedCount;
|
||
}
|
||
}
|
||
|
||
// 新增：对于所有 PDF 文件，如果还没有 originalPdfBase64，则从原始文件读取
|
||
if (fileType === 'pdf' && !metadataToSave.originalPdfBase64) {
|
||
try {
|
||
const pdfArrayBuffer = await fileToProcess.arrayBuffer();
|
||
metadataToSave.originalPdfBase64 = arrayBufferToBase64(pdfArrayBuffer);
|
||
if (typeof addProgressLog === "function") {
|
||
addProgressLog(`${logPrefix} 已保存原始 PDF 用于查看 (${Math.round(fileToProcess.size / 1024)} KB)`);
|
||
}
|
||
} catch (e) {
|
||
console.warn(`${logPrefix} 保存原始 PDF 失败:`, e);
|
||
}
|
||
}
|
||
|
||
if (typeof saveResultToDB === "function") {
|
||
await saveResultToDB({
|
||
id: `${fileToProcess.name}_${fileToProcess.size}`,
|
||
name: fileToProcess.name,
|
||
size: fileToProcess.size,
|
||
time: processedAt,
|
||
ocr: currentMarkdownContent,
|
||
translation: currentTranslationContent,
|
||
images: currentImagesData,
|
||
ocrChunks: ocrChunks,
|
||
translatedChunks: translatedChunks,
|
||
fileType: fileType,
|
||
targetLanguage: targetLanguageValue,
|
||
relativePath: relativePath,
|
||
sourceArchive: sourceArchive,
|
||
originalContent: originalEncoding === 'text' ? originalContent : null,
|
||
originalEncoding: originalEncoding,
|
||
originalBinary: originalEncoding && originalEncoding !== 'text' && originalBinary ? arrayBufferToBase64(originalBinary) : null,
|
||
originalExtension: originalExtension,
|
||
// 新增：模型元信息（OCR/翻译）
|
||
ocrEngine: usedOcrEngine || ocrEngineForLog || (typeof window !== 'undefined' ? (window.ocrSettingsManager?.getCurrentConfig()?.engine || null) : null),
|
||
ocrSource: usedOcrSource || null,
|
||
translationModelName: selectedTranslationModelName || 'none',
|
||
translationModelCustomName: (selectedTranslationModelName === 'custom' && translationModelConfig && (translationModelConfig.displayName || translationModelConfig.name)) ? (translationModelConfig.displayName || translationModelConfig.name) : null,
|
||
translationModelId: (selectedTranslationModelName === 'custom' && translationModelConfig && translationModelConfig.modelId) ? translationModelConfig.modelId : null,
|
||
batchId: batchContext ? batchContext.id : null,
|
||
batchOrder: batchContext ? batchContext.order : null,
|
||
batchTotal: batchContext ? batchContext.total : null,
|
||
batchTemplate: batchContext ? batchContext.template : null,
|
||
batchFormats: batchContext ? batchContext.formats : null,
|
||
batchStartedAt: batchContext ? batchContext.startedAt : null,
|
||
batchOutputLanguage: batchContext ? batchContext.outputLanguage : null,
|
||
batchOriginalIndex: batchContext ? batchContext.originalIndex : null,
|
||
batchAttempt: batchContext ? batchContext.attempt : null,
|
||
batchZip: batchContext ? batchContext.zipOutput : null,
|
||
// 新增：MinerU 结构化翻译元数据
|
||
metadata: Object.keys(metadataToSave).length > 0 ? metadataToSave : null
|
||
});
|
||
}
|
||
|
||
if (typeof onFileSuccess === 'function') {
|
||
onFileSuccess(fileToProcess);
|
||
}
|
||
return {
|
||
file: fileToProcess,
|
||
markdown: currentMarkdownContent,
|
||
translation: currentTranslationContent,
|
||
images: currentImagesData,
|
||
ocrChunks: ocrChunks,
|
||
translatedChunks: translatedChunks,
|
||
error: null, // 表示此文件处理成功（即使翻译部分可能仅标记了错误）
|
||
processedAt,
|
||
fileType,
|
||
targetLanguage: targetLanguageValue,
|
||
relativePath,
|
||
sourceArchive,
|
||
originalContent: originalEncoding === 'text' ? originalContent : null,
|
||
originalEncoding,
|
||
originalBinary: originalEncoding && originalEncoding !== 'text' && originalBinary ? arrayBufferToBase64(originalBinary) : null,
|
||
originalExtension,
|
||
// 回传一份模型元数据，便于上层使用
|
||
ocrEngine: usedOcrEngine || ocrEngineForLog || (typeof window !== 'undefined' ? (window.ocrSettingsManager?.getCurrentConfig()?.engine || null) : null),
|
||
ocrSource: usedOcrSource || null,
|
||
translationModelName: selectedTranslationModelName || 'none',
|
||
translationModelCustomName: (selectedTranslationModelName === 'custom' && translationModelConfig && (translationModelConfig.displayName || translationModelConfig.name)) ? (translationModelConfig.displayName || translationModelConfig.name) : null,
|
||
translationModelId: (selectedTranslationModelName === 'custom' && translationModelConfig && translationModelConfig.modelId) ? translationModelConfig.modelId : null,
|
||
batchId: batchContext ? batchContext.id : null,
|
||
batchOrder: batchContext ? batchContext.order : null,
|
||
batchTotal: batchContext ? batchContext.total : null,
|
||
batchTemplate: batchContext ? batchContext.template : null,
|
||
batchFormats: batchContext ? batchContext.formats : null,
|
||
batchStartedAt: batchContext ? batchContext.startedAt : null,
|
||
batchOutputLanguage: batchContext ? batchContext.outputLanguage : null,
|
||
batchOriginalIndex: batchContext ? batchContext.originalIndex : null,
|
||
batchAttempt: batchContext ? batchContext.attempt : null,
|
||
batchZip: batchContext ? batchContext.zipOutput : null,
|
||
// 返回 metadata，包含 contentListJson 等结构化翻译数据
|
||
metadata: Object.keys(metadataToSave).length > 0 ? metadataToSave : null
|
||
};
|
||
|
||
|
||
} catch (error) { // 捕获OCR流程中的致命错误，或其他未被特定keyInvalid逻辑捕获的错误
|
||
console.error(`${logPrefix} 处理文件时发生严重错误:`, error);
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 严重错误: ${error.message}`);
|
||
return {
|
||
file: fileToProcess,
|
||
markdown: null,
|
||
translation: null,
|
||
images: [],
|
||
ocrChunks: [currentMarkdownContent || ''],
|
||
translatedChunks: [`[处理错误: ${error.message}]`],
|
||
error: error.message // 这个error会被 app.js 中的常规重试逻辑捕获
|
||
};
|
||
} finally {
|
||
if (mistralFileId && mistralKeyObject && mistralKeyObject.value && fileType === 'pdf') {
|
||
try {
|
||
await deleteMistralFile(mistralFileId, mistralKeyObject.value);
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 已清理 Mistral 临时文件 (ID: ${mistralFileId})`);
|
||
} catch (deleteError) {
|
||
console.warn(`${logPrefix} 清理 Mistral 文件 ${mistralFileId} 失败:`, deleteError);
|
||
if (typeof addProgressLog === "function") addProgressLog(`${logPrefix} 警告: 清理 Mistral 文件 ${mistralFileId} 失败: ${deleteError.message}`);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
console.log('main.js: Checking before assignment...');
|
||
console.log('main.js: typeof processModule:', typeof processModule);
|
||
if (typeof processModule !== 'undefined') {
|
||
console.log('main.js: processModule object keys:', Object.keys(processModule));
|
||
}
|
||
console.log('main.js: typeof processSinglePdf (the function):', typeof processSinglePdf);
|
||
console.log('main.js: Is processSinglePdf a function?', processSinglePdf instanceof Function);
|
||
|
||
|
||
// 将函数添加到processModule对象
|
||
if (typeof processModule !== 'undefined') {
|
||
console.log('main.js: Attempting to assign processSinglePdf to processModule...');
|
||
processModule.processSinglePdf = processSinglePdf;
|
||
console.log('main.js: Assignment done. typeof processModule.processSinglePdf:', typeof processModule.processSinglePdf);
|
||
if (processModule.processSinglePdf === null) {
|
||
console.warn('main.js: processModule.processSinglePdf is NULL immediately after assignment!');
|
||
}
|
||
} else {
|
||
console.warn('main.js: processModule is undefined at the point of assignment.');
|
||
}
|
||
|
||
// 也暴露到 window 上，以便在 history_detail.html 等页面使用
|
||
if (typeof window !== 'undefined') {
|
||
window.processSinglePdf = processSinglePdf;
|
||
console.log('main.js: processSinglePdf exposed to window');
|
||
}
|