public void checkWritable(Ruby runtime)
throws IOException, BadDescriptorException, InvalidValueException {
checkClosed(runtime);
if ((mode & WRITABLE) == 0) {
throw runtime.newIOError("not opened for writing");
}
if ((mode & RBUF) != 0 && !mainStream.feof() && pipeStream == null) {
try {
// seek to force read buffer to invalidate
seek(0, Stream.SEEK_CUR);
} catch (PipeException p) {
// ignore unseekable streams for purposes of checking readability
} catch (IOException ioe) {
// MRI ignores seek errors, presumably for unseekable files like
// serial ports (JRUBY-2979), so we shall too.
}
}
if (pipeStream == null) {
mode &= ~RBUF;
}
}
public void checkReadable(Ruby runtime)
throws IOException, BadDescriptorException, InvalidValueException {
checkClosed(runtime);
if ((mode & READABLE) == 0) {
throw runtime.newIOError("not opened for reading");
}
if (((mode & WBUF) != 0 || (mode & (SYNCWRITE | RBUF)) == SYNCWRITE)
&& !mainStream.feof()
&& pipeStream == null) {
try {
// seek to force underlying buffer to flush
seek(0, Stream.SEEK_CUR);
} catch (PipeException p) {
// ignore unseekable streams for purposes of checking readability
} catch (IOException ioe) {
// MRI ignores seek errors, presumably for unseekable files like
// serial ports (JRUBY-2979), so we shall too.
}
}
}
public boolean areBothEOF() throws IOException, BadDescriptorException {
return mainStream.feof() && (pipeStream != null ? pipeStream.feof() : true);
}
