Fix mysqldump single quote espace (http://bugs.mysql.com/bug.php?id=65941)

fix_mysqldump_single_quote_espace.js

// Fix this bug: http://bugs.mysql.com/bug.php?id=65941
// Usage: 
//        node fix_mysqldump_single_quote_espace.js data.sql > data_fixed.sql
const fs = require('fs')
const file = process.argv.pop();

const inputStream = fs.createReadStream(file, 'utf-8');
const outputStream = fs.createWriteStream('output', 'utf-8');

let backslashStack = [];

const stats = fs.statSync(file)
const fileSizeInBytes = stats["size"]
const write = data => outputStream.write(data);

inputStream.on('open', () => {
  console.log('Start writing data...');
  outputStream.open();
});
inputStream.on('close', () => {
  console.log('Done.');
  outputStream.close();
});

let char;
inputStream.on('data', data => {
  console.log(inputStream.bytesRead/fileSizeInBytes);
  for (let i = 0; i < data.length; i++) {
    switch (char = data[i]) {
      case '\\':
        backslashStack.push(char);
        if (backslashStack.length % 2 === 0) {
          write(backslashStack.join(''));
          backslashStack.length = 0;
        }
        break;
      case "'":
        if (backslashStack.length > 0) {
          write("''");
          backslashStack = [];
        } else {
          write(char);
        }
        break;
      default:
        write(char);
    }
  };
})