node-java/postInstall.js at master · antoinepairet/node-java · GitHub

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var glob = require('glob');
var fs = require('fs');
var path = require('path');
var os = require('os');
var _ = require('lodash');
var Q = require('q');

module.exports = () => {
  var deferred = Q.defer();


  require('locate-java-home')(function (err, homes) {
    var homePath = _.get(homes, '[0].path');
    // console.log(JSON.stringify(homes, null, 2))
    // console.log('\n\n\n\n')
    // console.log(home)
    // console.log(homePath);

    var dll;
    var dylib;
    var so, soFiles;
    var binary;


    if (homePath) {
      dll = glob.sync('**/jvm.dll', { cwd: homePath })[0];
      dylib = glob.sync('**/libjvm.dylib', { cwd: homePath })[0];
      soFiles = glob.sync('**/libjvm.so', { cwd: homePath });

      if (soFiles.length > 0)
        so = getCorrectSoForPlatform(soFiles);

      binary = dll || dylib || so;

      fs.writeFileSync(
        path.resolve(__dirname, './build/jvm_dll_path.json'),
        binary
        ? JSON.stringify(
          path.delimiter
          + path.dirname(path.resolve(homePath, binary))
        )
        : '""'
      );

      deferred.resolve();
    }
	});

  return deferred.promise;
};

function getCorrectSoForPlatform(soFiles) {
  var so = _getCorrectSoForPlatform(soFiles);
  if (so) {
    so = removeDuplicateJre(so);
  }
  return so;
}

function removeDuplicateJre(filePath) {
  while (filePath.indexOf('jre/jre') >= 0) {
    filePath = filePath.replace('jre/jre', 'jre');
  }
  return filePath;
}

function _getCorrectSoForPlatform(soFiles) {

  var architectureFolderNames = {
    'ia32': 'i386',
    'x64': 'amd64'
  };

  if (os.platform() != 'sunos')
    return soFiles[0];

  var requiredFolderName = architectureFolderNames[os.arch()];

  for (var i = 0; i < soFiles.length; i++) {
    var so = soFiles[i];

    if (so.indexOf('server') > 0)
      if (so.indexOf(requiredFolderName) > 0)
        return so;
  }

  return soFiles[0];
}