static S loadTextFileFromZipFile(File inZip, S fileName) ctex {
  if (!fileExists(inZip)) null;
  try {
    temp ZipFile zip = new ZipFile(inZip);
    ret loadTextFileFromZipFile(zip, fileName);
  } catch e {
    fail(f2s(inZip), e);
  }
}
    
static S loadTextFileFromZipFile(ZipFile zip, S fileName) ctex {
  ZipEntry entry = zip.getEntry(fileName);
  if (entry == null) ret null;
  temp InputStream fin = zip.getInputStream(entry);
  new ByteArrayOutputStream baos;
  copyStream(fin, baos);
  ret fromUTF8(baos.toByteArray());
}