auto

2026-06-15 10:59:56 +08:00
parent 4640c5e02b
commit e524ede8af
8 changed files with 1595 additions and 39 deletions
@@ -0,0 +1,219 @@
+/**
+ * C 代码编译运行后端服务
+ * 接收 C 代码 → 编译 → 运行 → 返回输出
+ */
+const express = require('express')
+const cors = require('cors')
+const { execSync } = require('child_process')
+const path = require('path')
+const fs = require('fs')
+
+const app = express()
+const PORT = 3001
+
+app.use(cors())
+app.use(express.json({ limit: '1mb' }))
+
+// 查找可用的 C 编译器
+// w64devkit GCC 路径
+const W64DEVKIT_DIR = path.join(__dirname, 'bin', 'w64devkit', 'w64devkit')
+const W64DEVKIT_GCC = path.join(W64DEVKIT_DIR, 'bin', 'gcc.exe')
+const W64DEVKIT_PREFIX = path.join(W64DEVKIT_DIR, 'lib', 'gcc')
+
+function findCompiler() {
+  const candidates = [
+    // MinGW / MSYS2 (PATH)
+    'gcc.exe',
+    'x86_64-w64-mingw32-gcc.exe',
+    'i686-w64-mingw32-gcc.exe',
+    // TCC (Tiny C Compiler)
+    'tcc.exe',
+    // Clang
+    'clang.exe',
+    // MSVC
+    'cl.exe',
+    // 本项目的便携编译器
+    path.join(__dirname, 'bin', 'tcc.exe'),
+    path.join(__dirname, 'bin', 'gcc.exe'),
+    path.join(__dirname, '..', 'tools', 'tcc', 'tcc.exe'),
+  ]
+
+  // 先在 PATH 中查找
+  for (const name of ['gcc.exe', 'tcc.exe', 'clang.exe', 'cl.exe']) {
+    try {
+      execSync(`where ${name}`, { stdio: 'pipe', timeout: 3000 })
+      return { path: name, name }
+    } catch {}
+  }
+
+  // 检查 w64devkit GCC（需设置 GCC_EXEC_PREFIX）
+  if (fs.existsSync(W64DEVKIT_GCC)) {
+    return { path: W64DEVKIT_GCC, name: 'gcc.exe', execPrefix: W64DEVKIT_PREFIX }
+  }
+
+  // 再检查其他具体路径
+  for (const candidate of candidates) {
+    try {
+      const absPath = path.resolve(candidate)
+      if (fs.existsSync(absPath)) {
+        return { path: absPath, name: path.basename(absPath) }
+      }
+    } catch {}
+  }
+
+  // 搜索 Visual Studio MSVC 安装目录
+  try {
+    const vsPaths = [
+      'C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\VC\\Tools\\MSVC',
+      'C:\\Program Files\\Microsoft Visual Studio\\2022\\Professional\\VC\\Tools\\MSVC',
+      'C:\\Program Files\\Microsoft Visual Studio\\2022\\Enterprise\\VC\\Tools\\MSVC',
+      'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Community\\VC\\Tools\\MSVC',
+      'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Tools\\MSVC',
+    ]
+    for (const vsPath of vsPaths) {
+      if (fs.existsSync(vsPath)) {
+        const versions = fs.readdirSync(vsPath).sort().reverse()
+        for (const ver of versions) {
+          const clPath = path.join(vsPath, ver, 'bin', 'Hostx64', 'x64', 'cl.exe')
+          if (fs.existsSync(clPath)) {
+            return { path: clPath, name: 'cl.exe' }
+          }
+        }
+      }
+    }
+  } catch {}
+
+  return null
+}
+
+// 编译并运行 C 代码
+app.post('/api/run-c', (req, res) => {
+  const { code } = req.body
+  if (!code) {
+    return res.status(400).json({ error: '请提供 C 代码' })
+  }
+
+  const compiler = findCompiler()
+  if (!compiler) {
+    return res.status(400).json({
+      error: '未找到 C 编译器',
+      hint: '请安装 MinGW-w64 GCC 编译器',
+      installGuide: [
+        '--- 安装 MinGW-w64 ---',
+        '方法一（推荐）：下载 MinGW-w64 GCC',
+        '  1. 访问 https://winlibs.com/ 下载 GCC (MinGW-w64)',
+        '  2. 解压并将 bin/ 目录添加到系统 PATH 环境变量',
+        '  3. 重启终端后即可使用',
+        '',
+        '方法二（轻量）：下载 TCC (Tiny C Compiler)',
+        '  将 tcc.exe 放入 server/bin/ 目录',
+        '',
+        '安装后重新启动: npm run server',
+      ].join('\n')
+    })
+  }
+
+  const tmpDir = path.join(__dirname, '..', 'tmp')
+  if (!fs.existsSync(tmpDir)) {
+    fs.mkdirSync(tmpDir, { recursive: true })
+  }
+
+  const srcFile = path.join(tmpDir, `code_${Date.now()}.c`)
+  const outFile = path.join(tmpDir, `code_${Date.now()}.exe`)
+
+  try {
+    // 写入源码
+    fs.writeFileSync(srcFile, code, 'utf-8')
+
+    let compileCmd
+    const execOptions = {
+      timeout: 15000,
+      cwd: tmpDir,
+      encoding: 'utf-8',
+      env: { ...process.env }
+    }
+
+    if (compiler.name.includes('tcc')) {
+      // TCC: 编译并运行一步到位（支持 -run）
+      compileCmd = `"${compiler.path}" -run "${srcFile}"`
+    } else if (compiler.execPrefix) {
+      // w64devkit GCC: 需要设置 GCC_EXEC_PREFIX 并加入 PATH
+      const w64binDir = path.dirname(compiler.path)
+      execOptions.env.GCC_EXEC_PREFIX = compiler.execPrefix + path.sep
+      execOptions.env.PATH = w64binDir + path.delimiter + (execOptions.env.PATH || '')
+      compileCmd = `"${compiler.path}" "${srcFile}" -o "${outFile}" -Wall -std=c99`
+    } else {
+      // GCC/Clang: 先编译再运行
+      compileCmd = `"${compiler.path}" "${srcFile}" -o "${outFile}" -Wall -std=c99 2>&1`
+    }
+
+    // 编译
+    const compileOutput = execSync(compileCmd, execOptions)
+
+    let runOutput = compileOutput
+
+    // GCC/Clang: 编译后还需运行 exe
+    if (!compiler.name.includes('tcc') && fs.existsSync(outFile)) {
+      try {
+        runOutput = execSync(`"${outFile}"`, {
+          timeout: 10000,
+          cwd: tmpDir,
+          encoding: 'utf-8',
+          env: execOptions.env
+        })
+      } catch (runErr) {
+        runOutput = runErr.stdout || runErr.message
+      }
+    }
+
+    // 清理临时文件
+    try {
+      if (fs.existsSync(srcFile)) fs.unlinkSync(srcFile)
+      if (fs.existsSync(outFile)) fs.unlinkSync(outFile)
+    } catch {}
+
+    res.json({ output: runOutput })
+  } catch (compileErr) {
+    // 编译错误
+    res.json({
+      output: compileErr.stdout || compileErr.message,
+      isError: true
+    })
+  } finally {
+    // 确保清理
+    try {
+      if (fs.existsSync(srcFile)) fs.unlinkSync(srcFile)
+      if (fs.existsSync(outFile)) fs.unlinkSync(outFile)
+    } catch {}
+  }
+})
+
+// 健康检查
+app.get('/api/status', (req, res) => {
+  const compiler = findCompiler()
+  res.json({
+    status: 'ok',
+    compiler: compiler ? `${compiler.name} (${compiler.path})` : '未安装'
+  })
+})
+
+// 下载 TCC 脚本
+app.get('/api/setup-compiler', (req, res) => {
+  res.json({
+    message: '请手动下载 TCC:',
+    url: 'https://raw.githubusercontent.com/FooBarWidget/tinycc/master/tcc.exe',
+    instructions: `将 tcc.exe 放入 ${path.join(__dirname, 'bin')} 目录`
+  })
+})
+
+app.listen(PORT, () => {
+  console.log(`✅ C 代码运行服务已启动: http://localhost:${PORT}`)
+  const compiler = findCompiler()
+  if (compiler) {
+    console.log(`   检测到编译器: ${compiler.name}`)
+  } else {
+    console.log(`   ⚠️  未检测到 C 编译器，请安装后使用`)
+    console.log(`   下载 TCC: https://raw.githubusercontent.com/FooBarWidget/tinycc/master/tcc.exe`)
+    console.log(`   放置路径: ${path.join(__dirname, 'bin', 'tcc.exe')}`)
+  }
+})