洛谷Markdown复制工具，Ctrl+Alt+C触发
// ==UserScript==
// @name Luogu-MarkdownCopy
// @namespace https://www.luogu.com.cn/
// @version 1.0
// @description 洛谷Markdown复制工具，Ctrl+Alt+C触发
// @author Doubao AI
// @match https://*.luogu.com.cn/*
// @match https://*.luogu.org/*
// @icon https://www.luogu.com.cn/favicon.ico
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
// 存储调试信息
const debugInfo = {
lastUrl: '',
lastType: '',
lastContentLength: 0,
lastError: null,
extractionSteps: [], // 记录提取步骤
apiResponse: null, // 记录API响应
elementSelectors: [] // 记录使用的选择器
};
// 页面加载完成后初始化
window.addEventListener('load', () => {
init();
setupAdvancedObserver();
console.log('洛谷Markdown复制工具已加载 (v4.2)');
console.log('按Ctrl+Alt+C复制内容，输入__luoguCopyDebug()查看调试信息');
});
// 暴露调试函数
window.__luoguCopyDebug = () => debugInfo;
function init() {
// 确保只绑定一次事件
document.removeEventListener('keydown', handleKeyCombo);
document.addEventListener('keydown', handleKeyCombo);
}
/**
* 高级观察者，针对不同页面类型采用不同观察策略
*/
function setupAdvancedObserver() {
const isProblemPage = /problem|p\/\d+/.test(window.location.href);
const isTeamPage = /team/.test(window.location.href);
const isDiscussPage = /discuss/.test(window.location.href);
const config = {
childList: true,
subtree: true,
attributes: true,
attributeFilter: ['class', 'data-md', 'data-markdown']
};
// 观察频率控制
let lastUpdateTime = 0;
const observer = new MutationObserver((mutations) => {
const now = Date.now();
if (now - lastUpdateTime > 500) {
lastUpdateTime = now;
if (mutations.some(m =>
m.addedNodes.length > 0 ||
m.target.hasAttribute('data-md') ||
m.target.hasAttribute('data-markdown')
)) {
init();
}
}
});
// 针对题目页面加强观察
if (isProblemPage) {
const containers = [
document.querySelector('.problem-container'),
document.querySelector('.lg-container'),
document.querySelector('.main-container'),
document.body
].filter(Boolean);
containers.forEach(container => observer.observe(container, config));
}
else if (isTeamPage) {
const teamContainer = document.querySelector('.team-container') || document.body;
observer.observe(teamContainer, config);
}
else if (isDiscussPage) {
const discussContainer = document.querySelector('.discuss-container') || document.body;
observer.observe(discussContainer, config);
}
else {
observer.observe(document.body, config);
}
}
/**
* 处理快捷键
*/
async function handleKeyCombo(e) {
if (e.ctrlKey && e.altKey && (e.key === 'c' || e.key === 'C')) {
e.preventDefault();
e.stopPropagation();
// 重置调试信息
debugInfo.lastUrl = window.location.href;
debugInfo.lastError = null;
debugInfo.extractionSteps = [];
debugInfo.apiResponse = null;
debugInfo.elementSelectors = [];
try {
const loadingAlert = showTemporaryAlert('正在提取内容...', 5000);
loadingAlert.element.textContent = '正在提取内容（1/5尝试）';
// 多次尝试提取，增加成功率
let result = null;
for (let i = 0; i < 5; i++) {
if (i > 0) {
loadingAlert.element.textContent = `正在提取内容（${i+1}/5尝试）`;
}
result = await getMarkdownByPageType();
if (result?.content) break;
await new Promise(resolve => setTimeout(resolve, 500 + i * 300));
}
clearTimeout(loadingAlert.timeoutId);
loadingAlert.element.remove();
if (result?.content) {
debugInfo.lastType = result.type;
debugInfo.lastContentLength = result.content.length;
await copyToClipboard(result.content);
showTemporaryAlert(`✅ 已复制${result.type}（${result.content.length}字符）`, 2000);
} else {
debugInfo.lastError = '未找到可复制的内容';
alert('❌ 未找到可复制的Markdown内容\n请尝试：\n1. 刷新页面\n2. 确保内容已加载完成\n3. 检查控制台获取更多信息');
}
} catch (err) {
debugInfo.lastError = err.message;
alert(`❌ 操作失败: ${err.message}\n请查看控制台获取详细信息`);
console.error('复制失败:', err);
}
}
}
/**
* 显示临时提示
*/
function showTemporaryAlert(message, duration) {
const alertEl = document.createElement('div');
alertEl.style.position = 'fixed';
alertEl.style.bottom = '20px';
alertEl.style.right = '20px';
alertEl.style.padding = '10px 20px';
alertEl.style.backgroundColor = 'rgba(0, 0, 0, 0.8)';
alertEl.style.color = 'white';
alertEl.style.borderRadius = '4px';
alertEl.style.zIndex = '999999';
alertEl.textContent = message;
document.body.appendChild(alertEl);
const timeoutId = setTimeout(() => {
alertEl.remove();
}, duration);
return { element: alertEl, timeoutId };
}
/**
* 复制到剪贴板
*/
async function copyToClipboard(text) {
if (!text) throw new Error('无内容可复制');
if (navigator.clipboard && window.isSecureContext) {
try {
await navigator.clipboard.writeText(text);
return true;
} catch (err) {
console.warn('剪贴板API失败，尝试备用方法:', err);
}
}
const textarea = document.createElement('textarea');
textarea.value = text;
textarea.style.position = 'fixed';
textarea.style.left = '-9999px';
document.body.appendChild(textarea);
textarea.select();
textarea.setSelectionRange(0, text.length);
try {
const success = document.execCommand('copy');
if (!success) throw new Error('无法执行复制命令');
return true;
} finally {
document.body.removeChild(textarea);
}
}
/**
* 根据页面类型获取内容
*/
async function getMarkdownByPageType() {
const url = window.location.href;
// 优先处理题目页面
if (url.includes('problem') || url.match(/p\/\d+/)) {
const content = await getProblemContent();
if (content) return { content, type: '题目内容' };
}
if (url.includes('team')) {
const content = await getTeamContent();
if (content) return { content, type: '团队内容' };
}
if (url.includes('discuss')) {
const content = await getDiscussionContent();
if (content) return { content, type: '讨论帖' };
}
const strategies = [
{ test: /article/, handler: getArticleContent, type: '专栏文章' },
{ test: /blog(?!.*admin)/i, handler: getBlogContent, type: '博客' },
{ test: /user(?!.*notification)/, handler: getUserIntroduction, type: '用户简介' },
{ test: /contest(?!.*list|.*edit)/, handler: getContestDescription, type: '比赛描述' },
{ test: /training(?!.*edit|.*list)/, handler: getTrainingDescription, type: '训练内容' },
{ test: /solution/, handler: getSolutionContent, type: '题解' },
{ test: /forum/, handler: getForumContent, type: '论坛内容' },
{ test: /.*/, handler: getGeneralMarkdownContent, type: '页面内容' }
];
for (const { test, handler, type } of strategies) {
if (test.test(url)) {
try {
const content = await handler();
if (content) return { content, type };
} catch (err) {
console.log(`[${type}]提取失败:`, err.message);
}
}
}
return { content: null, type: null };
}
/**
* 团队页面内容提取
*/
async function getTeamContent() {
const match = window.location.href.match(/team\/(\d+)/);
if (match?.[1]) {
try {
const res = await fetch(`/api/team/get?id=${match[1]}`);
if (res.ok) {
const data = await res.json();
const parts = [];
if (data.data?.name) parts.push(`# ${data.data.name}`);
if (data.data?.description) parts.push('## 团队描述', data.data.description);
if (data.data?.announcement) parts.push('## 团队公告', data.data.announcement);
if (parts.length > 0) return parts.join('\n\n');
}
} catch (err) {
console.log('团队API获取失败:', err);
}
}
const teamSelectors = [
{ title: '团队描述', selector: '.team-description, .team-info-description' },
{ title: '团队公告', selector: '.team-announcement, .team-notice' },
{ title: '团队介绍', selector: '.team-intro, .team-profile' }
];
const parts = [];
const teamName = document.querySelector('.team-name, .team-title')?.textContent?.trim();
if (teamName) parts.push(`# ${teamName}`);
for (const { title, selector } of teamSelectors) {
const el = document.querySelector(selector);
if (el?.textContent?.trim()) {
parts.push(`## ${title}`);
const mdContent = el.getAttribute('data-md') ||
el.getAttribute('data-markdown') ||
el.getAttribute('data-original');
if (mdContent) {
parts.push(mdContent);
} else {
if (window._feInjection?.markdown?.toMarkdown) {
parts.push(window._feInjection.markdown.toMarkdown(el.innerHTML));
} else {
parts.push(el.textContent.trim());
}
}
}
}
if (parts.length > (teamName ? 1 : 0)) {
return parts.join('\n\n');
}
const teamPost = document.querySelector('.team-post-content, .team-topic-content');
if (teamPost) {
const content = teamPost.getAttribute('data-md') ||
(window._feInjection?.markdown?.toMarkdown?.(teamPost.innerHTML) ||
teamPost.textContent.trim());
if (content) return content;
}
return null;
}
/**
* 讨论帖内容提取
*/
async function getDiscussionContent() {
const activePost = document.querySelector('.discuss-post.active, .post-item.highlight');
if (activePost) {
const content = await extractContentFromElement(activePost);
if (content) return content;
}
const match = window.location.href.match(/discuss\/(\d+)/);
if (match?.[1]) {
try {
const endpoints = [
`/api/discuss/show/${match[1]}`,
`/api/discuss/${match[1]}`,
`/discuss/${match[1]}/api`
];
for (const endpoint of endpoints) {
const res = await fetch(endpoint, {
headers: {
'Accept': 'application/json',
'X-Requested-With': 'XMLHttpRequest'
},
credentials: 'include'
});
if (res.ok) {
const data = await res.json();
if (data.content) return data.content;
if (data.data?.content) return data.data.content;
if (data.post?.content) return data.post.content;
}
}
} catch (err) {
console.log('讨论帖API获取失败:', err);
}
}
const contentSelectors = [
'.discuss-content',
'.post-content',
'.lg-article',
'.markdown-body',
'.post-detail-content',
'[class*="discuss-post-content"]'
];
for (const selector of contentSelectors) {
const el = document.querySelector(selector);
if (el) {
const content = await extractContentFromElement(el);
if (content) return content;
}
}
const scriptTags = document.querySelectorAll('script[type="application/json"], script:not([type])');
for (const script of scriptTags) {
try {
const jsonData = JSON.parse(script.textContent);
const content = findContentInJson(jsonData);
if (content) return content;
} catch (err) {
// 忽略解析错误
}
}
return null;
}
/**
* 从元素中提取内容的通用方法
*/
function extractContentFromElement(el) {
const mdAttrs = ['data-md', 'data-markdown', 'data-original', 'data-content'];
for (const attr of mdAttrs) {
const mdContent = el.getAttribute(attr);
if (mdContent && mdContent.trim().length > 0) {
debugInfo.extractionSteps.push(`从属性 ${attr} 提取内容`);
return mdContent.trim();
}
}
const childWithMd = el.querySelector('[data-md], [data-markdown], [data-original]');
if (childWithMd) {
const content = childWithMd.getAttribute('data-md') ||
childWithMd.getAttribute('data-markdown') ||
childWithMd.getAttribute('data-original');
if (content) {
debugInfo.extractionSteps.push(`从子元素属性提取内容`);
return content.trim();
}
}
if (window._feInjection?.markdown?.toMarkdown) {
try {
const mdContent = window._feInjection.markdown.toMarkdown(el.innerHTML);
if (mdContent && mdContent.trim().length > 0) {
debugInfo.extractionSteps.push(`使用内置工具转换HTML为Markdown`);
return mdContent.trim();
}
} catch (err) {
console.log('转换HTML为Markdown失败:', err);
}
}
const textContent = el.textContent.trim();
if (textContent.length > 0) {
debugInfo.extractionSteps.push(`提取纯文本内容`);
return textContent;
}
return null;
}
/**
* 在JSON数据中查找可能的内容
*/
function findContentInJson(obj, depth = 0) {
if (depth > 5) return null;
if (typeof obj === 'object' && obj !== null) {
const contentFields = ['content', 'markdown', 'text', 'description', 'postContent'];
for (const field of contentFields) {
if (obj[field] && typeof obj[field] === 'string' && obj[field].trim().length > 0) {
return obj[field].trim();
}
}
for (const key in obj) {
const result = findContentInJson(obj[key], depth + 1);
if (result) return result;
}
}
return null;
}
/**
* 专栏/文章内容提取
*/
function getArticleContent() {
if (window._feInstance?.currentData?.article?.content) {
return window._feInstance.currentData.article.content;
}
const lentilleContext = document.querySelector('#lentille-context');
if (lentilleContext?.text) {
try {
const data = JSON.parse(lentilleContext.text);
return data.data?.article?.content || null;
} catch (err) { /* 忽略错误 */ }
}
const contentEl = document.querySelector('.article-content, .article-markdown');
return contentEl ? extractContentFromElement(contentEl) : null;
}
/**
* 博客内容提取
*/
async function getBlogContent() {
if (window.BlogGlobals?.blogID) {
try {
const res = await fetch(`/api/blog/detail/${window.BlogGlobals.blogID}`);
const data = await res.json();
if (data.data?.Content) return data.data.Content;
} catch (err) { /* 忽略错误 */ }
}
if (window._feInstance?.currentData?.blog?.content) {
return window._feInstance.currentData.blog.content;
}
const contentEl = document.querySelector('.blog-content, .blog-markdown');
return contentEl ? extractContentFromElement(contentEl) : null;
}
/**
* 题目内容提取（重点优化）
*/
async function getProblemContent() {
let problemId = null;
// 增强题目ID提取：支持多种URL格式
const match1 = window.location.href.match(/problem\/([A-Za-z0-9]+)/);
const match2 = window.location.href.match(/p\/(\d+)/);
const match3 = window.location.href.match(/problem\/show\?p=(\d+)/);
if (match1) problemId = match1[1];
if (match2) problemId = match2[1];
if (match3) problemId = match3[1];
debugInfo.extractionSteps.push(`识别到题目ID: ${problemId || '未识别'}`);
// 策略1: 从API获取完整数据（支持多组样例）
if (problemId) {
try {
const apiEndpoints = [
`/api/problem/${problemId}`,
`/problem/${problemId}/api`,
`/p/${problemId}/api`
];
let apiData = null;
for (const endpoint of apiEndpoints) {
debugInfo.extractionSteps.push(`尝试API: ${endpoint}`);
const res = await fetch(endpoint);
if (res.ok) {
apiData = await res.json();
debugInfo.apiResponse = apiData; // 保存API响应用于调试
if (apiData.data) {
debugInfo.extractionSteps.push(`API返回有效数据`);
break;
}
}
}
if (apiData?.data) {
const parts = [`# ${apiData.data.title || '题目'}`];
const sectionStatus = {};
// 添加题目描述
if (apiData.data.description) {
parts.push('## 题目描述', apiData.data.description);
sectionStatus.description = '已获取';
} else {
sectionStatus.description = '缺失';
}
// 添加输入格式
if (apiData.data.inputFormat) {
parts.push('## 输入格式', apiData.data.inputFormat);
sectionStatus.inputFormat = '已获取';
} else {
sectionStatus.inputFormat = '缺失';
}
// 添加输出格式
if (apiData.data.outputFormat) {
parts.push('## 输出格式', apiData.data.outputFormat);
sectionStatus.outputFormat = '已获取';
} else {
sectionStatus.outputFormat = '缺失';
}
// 处理样例（支持多组样例）
if (apiData.data.samples && Array.isArray(apiData.data.samples) && apiData.data.samples.length > 0) {
apiData.data.samples.forEach((sample, index) => {
if (sample.input) {
parts.push(`## 样例输入 ${index + 1}`, '```', sample.input, '```');
}
if (sample.output) {
parts.push(`## 样例输出 ${index + 1}`, '```', sample.output, '```');
}
});
sectionStatus.samples = `已获取 ${apiData.data.samples.length} 组`;
}
// 兼容旧版单一样例格式
else {
if (apiData.data.sampleInput) {
parts.push('## 样例输入', '```', apiData.data.sampleInput, '```');
sectionStatus.sampleInput = '已获取';
} else {
sectionStatus.sampleInput = '缺失';
}
if (apiData.data.sampleOutput) {
parts.push('## 样例输出', '```', apiData.data.sampleOutput, '```');
sectionStatus.sampleOutput = '已获取';
} else {
sectionStatus.sampleOutput = '缺失';
}
}
// 添加提示
if (apiData.data.hint) {
parts.push('## 提示', apiData.data.hint);
sectionStatus.hint = '已获取';
} else {
sectionStatus.hint = '缺失';
}
// 添加数据范围
if (apiData.data.limit) {
parts.push('## 数据范围', apiData.data.limit);
sectionStatus.limit = '已获取';
} else {
sectionStatus.limit = '缺失';
}
debugInfo.extractionSteps.push(`API内容提取状态: ${JSON.stringify(sectionStatus)}`);
// 检查是否只有描述部分，如果是则尝试页面提取补充
const hasOnlyDescription = Object.keys(sectionStatus).filter(k => k !== 'description').every(k => sectionStatus[k] === '缺失');
if (hasOnlyDescription && sectionStatus.description === '已获取') {
debugInfo.extractionSteps.push('API仅返回描述内容，尝试从页面补充其他部分');
const pageParts = await getProblemContentFromPage();
// 合并API描述和页面提取的其他部分
return mergeProblemParts(parts, pageParts);
}
return parts.filter(Boolean).join('\n\n');
}
} catch (err) {
debugInfo.extractionSteps.push(`题目API获取失败: ${err.message}`);
console.log('题目API获取失败，尝试页面提取:', err);
}
}
// 策略2: 从页面元素提取（增强选择器和处理逻辑）
debugInfo.extractionSteps.push('尝试从页面元素提取完整题目内容');
return getProblemContentFromPage();
}
/**
* 专门从页面元素提取题目内容
*/
async function getProblemContentFromPage() {
const problemTitle = document.querySelector('.problem-title, .lg-problem-title, .problem-header h1')?.textContent?.trim() || '题目';
const parts = [`# ${problemTitle}`];
// 扩展题目各部分的选择器列表，适配更多页面样式
const sections = {
'题目描述': [
'.problem-description',
'.lg-problem-description',
'.problem-content-description',
'[class*="description"]',
'#description'
],
'输入格式': [
'.problem-input',
'.lg-problem-input',
'.problem-content-input',
'[class*="input-format"]',
'#input'
],
'输出格式': [
'.problem-output',
'.lg-problem-output',
'.problem-content-output',
'[class*="output-format"]',
'#output'
],
'样例输入': [
'.problem-sample-input',
'.lg-sample-input',
'.sample-input',
'[class*="sample-input"]',
'#sample-input'
],
'样例输出': [
'.problem-sample-output',
'.lg-sample-output',
'.sample-output',
'[class*="sample-output"]',
'#sample-output'
],
'提示': [
'.problem-hint',
'.lg-problem-hint',
'.problem-content-hint',
'[class*="hint"]',
'#hint'
],
'数据范围': [
'.problem-limit',
'.lg-problem-limit',
'.problem-content-limit',
'[class*="data-range"]',
'#limit'
]
};
// 提取每个区块内容
for (const [title, selectors] of Object.entries(sections)) {
let content = null;
// 尝试所有可能的选择器
for (const selector of selectors) {
debugInfo.elementSelectors.push(`尝试选择器: ${selector}`);
const el = document.querySelector(selector);
if (el) {
content = extractContentFromElement(el);
if (content) {
debugInfo.extractionSteps.push(`成功从 ${selector} 提取 ${title}`);
break;
}
}
}
if (content) {
parts.push(`## ${title}`);
if (title.includes('样例')) {
parts.push('```', content, '```');
} else {
parts.push(content);
}
} else {
debugInfo.extractionSteps.push(`未找到 ${title} 内容`);
}
}
// 检查是否有有效内容
if (parts.length > 1) {
return parts.join('\n\n');
}
// 策略3: 尝试从全局变量提取
if (window._feInstance?.currentData?.problem?.content) {
debugInfo.extractionSteps.push('从全局变量获取内容');
return window._feInstance.currentData.problem.content;
}
// 策略4: 从脚本标签提取
const scriptTags = document.querySelectorAll('script[type="application/json"]');
for (const script of scriptTags) {
try {
const data = JSON.parse(script.textContent);
const content = findContentInJson(data);
if (content) {
debugInfo.extractionSteps.push('从脚本标签获取内容');
return content;
}
} catch (err) { /* 忽略错误 */ }
}
return null;
}
/**
* 合并API和页面提取的题目部分
*/
function mergeProblemParts(apiParts, pageParts) {
if (!pageParts) return apiParts.join('\n\n');
// 分离标题和内容
const apiTitle = apiParts[0];
const apiContent = apiParts.slice(1).join('\n\n');
// 分离页面提取的各个部分
const pageSections = {};
let currentSection = null;
let currentContent = [];
for (const part of pageParts.split('\n\n')) {
if (part.startsWith('## ')) {
if (currentSection) {
pageSections[currentSection] = currentContent.join('\n\n');
}
currentSection = part.slice(3).trim();
currentContent = [];
} else if (currentSection) {
currentContent.push(part);
}
}
if (currentSection) {
pageSections[currentSection] = currentContent.join('\n\n');
}
// 合并结果：保留API的描述，补充页面的其他部分
const mergedParts = [apiTitle];
// 添加API中的描述
mergedParts.push('## 题目描述', apiContent.split('\n\n').find(p => p.startsWith('## 题目描述') ? false : p) || '');
// 添加页面中的其他部分
const sectionOrder = ['输入格式', '输出格式', '样例输入', '样例输出', '提示', '数据范围'];
sectionOrder.forEach(section => {
if (pageSections[section]) {
mergedParts.push(`## ${section}`, pageSections[section]);
}
});
return mergedParts.filter(Boolean).join('\n\n');
}
/**
* 其他页面内容提取函数
*/
function getSolutionContent() {
const match = window.location.href.match(/solution\/(\d+)/);
if (match?.[1]) {
try {
return fetch(`/api/solution/${match[1]}`)
.then(res => res.json())
.then(data => data.data?.content || null)
.catch(() => null);
} catch (err) { /* 忽略错误 */ }
}
const contentEl = document.querySelector('.solution-content, .solution-article');
return contentEl ? extractContentFromElement(contentEl) : null;
}
function getForumContent() {
const contentEl = document.querySelector('.forum-post-content, .post-body');
return contentEl ? extractContentFromElement(contentEl) : null;
}
function getUserIntroduction() {
if (window._feInstance?.currentData?.user?.introduction) {
return window._feInstance.currentData.user.introduction;
}
const introEl = document.querySelector('.introduction-content, .user-intro');
return introEl ? extractContentFromElement(introEl) : null;
}
function getContestDescription() {
if (window._feInstance?.currentData?.contest?.description) {
return window._feInstance.currentData.contest.description;
}
const descEl = document.querySelector('.contest-description, .contest-info-content');
return descEl ? extractContentFromElement(descEl) : null;
}
function getTrainingDescription() {
if (window._feInstance?.currentData?.training?.description) {
return window._feInstance.currentData.training.description;
}
const descEl = document.querySelector('.training-description, .training-content');
return descEl ? extractContentFromElement(descEl) : null;
}
function getGeneralMarkdownContent() {
const contentSelectors = [
'.lg-content',
'.main-content',
'.article-content',
'.post-content',
'.content-wrapper',
'[class*="markdown-content"]',
'[id*="content"]'
];
for (const selector of contentSelectors) {
const contentEl = document.querySelector(selector);
if (contentEl) {
const content = extractContentFromElement(contentEl);
if (content) return content;
}
}
return null;
}
})();