static S loadTextFileFromZipFile(File inZip, S fileName) ctex {
  if (!fileExists(inZip)) null;
  ZipFile zip = new ZipFile(inZip);
  try {
    ret loadTextFileFromZipFile(zip, fileName);
  } finally {
    zip.close();
  }
}
    
static S loadTextFileFromZipFile(ZipFile zip, S fileName) ctex {
  ZipEntry entry = zip.getEntry(fileName);
  if (entry == null) ret null;
  InputStream fin = zip.getInputStream(entry);
  new ByteArrayOutputStream baos;
  copyStream(fin, baos);
  fin.close();
  ret fromUTF8(baos.toByteArray());
}