opusdev/vector-similarity-api

1const path = require('path');2const utils = require('./utils');3const merge = utils.merge;4const bus = utils.bus;5const spawn = require('child_process').spawn;6 7module.exports = function spawnCommand(command, config, eventArgs) {8  var stdio = ['pipe', 'pipe', 'pipe'];9 10  if (config.options.stdout) {11    stdio = ['pipe', process.stdout, process.stderr];12  }13 14  const env = merge(process.env, { FILENAME: eventArgs[0] });15 16  var sh = 'sh';17  var shFlag = '-c';18  var spawnOptions = {19    env: merge(config.options.execOptions.env, env),20    stdio: stdio,21  };22 23  if (!Array.isArray(command)) {24    command = [command];25  }26 27  if (utils.isWindows) {28    // if the exec includes a forward slash, reverse it for windows compat29    // but *only* apply to the first command, and none of the arguments.30    // ref #1251 and #123631    command = command.map(executable => {32      if (executable.indexOf('/') === -1) {33        return executable;34      }35 36      return  executable.split(' ').map((e, i) => {37        if (i === 0) {38          return path.normalize(e);39        }40        return e;41      }).join(' ');42    });43    // taken from npm's cli: https://git.io/vNFD444    sh = process.env.comspec || 'cmd';45    shFlag = '/d /s /c';46    spawnOptions.windowsVerbatimArguments = true;47    spawnOptions.windowsHide = true;48  }49 50  const args = command.join(' ');51  const child = spawn(sh, [shFlag, args], spawnOptions);52 53  if (config.required) {54    var emit = {55      stdout: function (data) {56        bus.emit('stdout', data);57      },58      stderr: function (data) {59        bus.emit('stderr', data);60      },61    };62 63    // now work out what to bind to...64    if (config.options.stdout) {65      child.on('stdout', emit.stdout).on('stderr', emit.stderr);66    } else {67      child.stdout.on('data', emit.stdout);68      child.stderr.on('data', emit.stderr);69 70      bus.stdout = child.stdout;71      bus.stderr = child.stderr;72    }73  }74};75