如何获取MSI文件的注释等文件信息？fs模块fs.stats无法获取

Hey there! You’re totally right that Node.js’s fs.stat() only gives you basic filesystem stats—things like file size, creation time, or permissions. It doesn’t touch Windows-specific metadata like the comment field on an MSI file. Let’s walk through two solid ways to get that info, depending on whether you want the file system-level comment or the internal MSI package comment.

This is the comment you see when you right-click a file, go to Properties → Details → Comments. To fetch this, you can use Windows’ built-in wmic command via Node.js’s child_process module (no extra npm packages needed):

const { exec } = require('child_process');

const getWindowsFileComment = (filePath) => {
  // Escape backslashes for the wmic command (Windows requires double backslashes)
  const escapedPath = filePath.replace(/\\/g, '\\\\');
  const command = `wmic datafile where name="${escapedPath}" get comment /value`;
  
  return new Promise((resolve, reject) => {
    exec(command, (error, stdout, stderr) => {
      if (error) {
        reject(new Error(`Failed to fetch comment: ${stderr || error.message}`));
        return;
      }
      // Parse the output (format: "Comment=Your comment text")
      const commentMatch = stdout.trim().match(/Comment=(.*)/);
      resolve(commentMatch ? commentMatch[1].trim() : 'No comment found on file system');
    });
  });
};

// Example usage
getWindowsFileComment('C:\\Downloads\\MyInstaller.msi')
  .then(comment => console.log('File System Comment:', comment))
  .catch(err => console.error('Error:', err));

MSI files are actually databases, so they store their own internal properties (like Comments, ProductVersion, etc.) separate from the file system metadata. For this, using a dedicated MSI parsing library is the most reliable approach.

First, install the msi npm package:

npm install msi

Then use this code to extract the internal comment:

const msi = require('msi');

const getMsiInternalComment = async (msiPath) => {
  try {
    const db = await msi.open(msiPath);
    const msiProperties = await db.getProperties();
    await db.close();
    return msiProperties.Comments || 'No internal comment found in MSI';
  } catch (err) {
    throw new Error(`Failed to read MSI properties: ${err.message}`);
  }
};

// Example usage
getMsiInternalComment('C:\\Downloads\\MyInstaller.msi')
  .then(comment => console.log('MSI Internal Comment:', comment))
  .catch(err => console.error('Error:', err));

Quick Notes #

• If you don’t want to use npm packages, you can also use Windows’ built-in WiRunSQL.vbs script to query the MSI database directly via command line—just run cscript WiRunSQL.vbs "C:\Path\To\file.msi" "SELECT Value FROM Property WHERE Property='Comments'".
• For the wmic method, make sure your file path doesn’t have quotes or special characters (if it does, you’ll need extra escaping).
• The msi library needs Node.js 12+ and may require build tools (like Python) installed on Windows if you run into installation errors.

内容的提问来源于stack exchange，提问作者sirzento