solcjs

#!/usr/bin/env node

// hold on to any exception handlers that existed prior to this script running, we'll be adding them back at the end
var originalUncaughtExceptionListeners = process.listeners("uncaughtException");

var fs = require('fs-extra');
var path = require('path');
var solc = require('./index.js');
// FIXME: remove annoying exception catcher of Emscripten
//        see https://github.com/chriseth/browser-solidity/issues/167
process.removeAllListeners('uncaughtException');

var yargs = require('yargs')
  .usage('Usage: $0 [options] [input_file...]')
  .option('version', {
    describe: 'Show version and exit.',
    type: 'boolean'
  })
  .option('optimize', {
    describe: 'Enable bytecode optimizer.',
    type: 'boolean'
  })
  .option('bin', {
    describe: 'Binary of the contracts in hex.',
    type: 'boolean'
  })
  .option('abi', {
    describe: 'ABI of the contracts.',
    type: 'boolean'
  })
  .option('standard-json', {
    describe: 'Turn on Standard JSON Input / Output mode.',
    type: 'boolean'
  })
  .option('output-dir', {
    alias: 'o',
    describe: 'Output directory for the contracts.',
    type: 'string'
  })
  .version(solc.version())
  .showHelpOnFail(false, 'Specify --help for available options')
  .help()

var argv = yargs.argv;
var files = argv._;
var destination = argv['output-dir'] || '.'

function abort (msg) {
  console.error(msg || 'Error occured');
  process.exit(1);
}

if (argv['standard-json']) {
  var size = fs.fstatSync(process.stdin.fd).size;

  if (size <= 0) {
    abort('Empty input was read');
  }

  var input = fs.readSync(process.stdin.fd, size)[0];

  console.log(solc.compileStandardWrapper(input));
  process.exit(0);
} else if (files.length === 0) {
  console.error('Must provide a file');
  process.exit(1);
}

if (!(argv.bin || argv.abi)) {
  abort('Invalid option selected, must specify either --bin or --abi');
}

var sources = {};

for (var i = 0; i < files.length; i++) {
  try {
    sources[ files[i] ] = { content: fs.readFileSync(files[i]).toString() };
  } catch (e) {
    abort('Error reading ' + files[i] + ': ' + e);
  }
}

var output = JSON.parse(solc.compileStandardWrapper(JSON.stringify({
  language: 'Solidity',
  settings: {
    optimizer: {
      enabled: argv.optimize
    },
    outputSelection: {
      '*': {
        '*': [ 'abi', 'evm.bytecode' ]
      }
    }
  },
  sources: sources
})));

if (!output) {
  abort('No output from compiler');
} else if (output['errors']) {
  for (var error in output['errors']) {
    var message = output['errors'][error]
    if (message.severity === 'warning') {
      console.log(message.formattedMessage)
    } else {
      console.error(message.formattedMessage)
    }
  }
}

fs.ensureDirSync (destination);

function writeFile (file, content) {
  file = path.join(destination, file);
  fs.writeFile(file, content, function (err) {
    if (err) {
      console.error('Failed to write ' + file + ': ' + err);
    }
  });
}

for (var fileName in output.contracts) {
  for (var contractName in output.contracts[fileName]) {
    var contractFileName = fileName + ':' + contractName;
    contractFileName = contractFileName.replace(/[:./]/g, '_');

    if (argv.bin) {
      writeFile(contractFileName + '.bin', output.contracts[fileName][contractName].evm.bytecode.object);
    }

    if (argv.abi) {
      writeFile(contractFileName + '.abi', JSON.stringify(output.contracts[fileName][contractName].abi));
    }
  }
}

// Put back original exception handlers.
originalUncaughtExceptionListeners.forEach(function (listener) {
  process.addListener('uncaughtException', listener);
});