Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.java.programmer > #9471

Re: Piggypack Encoding/Decoding on RandomAccessFile

Path csiph.com!x330-a1.tempe.blueboxinc.net!newsfeed.hal-mli.net!feeder3.hal-mli.net!newsfeed.hal-mli.net!feeder1.hal-mli.net!nx01.iad01.newshosting.com!newshosting.com!69.16.185.11.MISMATCH!npeer01.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
From Lew <lewbloch@gmail.com>
Newsgroups comp.lang.java.programmer
Subject Re: Piggypack Encoding/Decoding on RandomAccessFile
Date Thu, 3 Nov 2011 13:58:33 -0700 (PDT)
Organization http://groups.google.com
Lines 17
Message-ID <8910467.293.1320353913956.JavaMail.geo-discussion-forums@prmv24> (permalink)
References <j8ulue$or4$1@news.albasani.net> <j8uq9l$17l$1@dont-email.me> <j8urao$53e$1@news.albasani.net>
Reply-To comp.lang.java.programmer@googlegroups.com
NNTP-Posting-Host 2620:0:1000:2404:224:d7ff:fe69:5838
Mime-Version 1.0
Content-Type text/plain; charset=ISO-8859-1
X-Trace posting.google.com 1320354851 10341 127.0.0.1 (3 Nov 2011 21:14:11 GMT)
X-Complaints-To groups-abuse@google.com
NNTP-Posting-Date Thu, 3 Nov 2011 21:14:11 +0000 (UTC)
In-Reply-To <j8urao$53e$1@news.albasani.net>
Complaints-To groups-abuse@google.com
Injection-Info glegroupsg2000goo.googlegroups.com; posting-host=2620:0:1000:2404:224:d7ff:fe69:5838; posting-account=CP-lKQoAAAAGtB5diOuGlDQk0jIwmH0T
User-Agent G2/1.0
X-Google-Web-Client true
Xref x330-a1.tempe.blueboxinc.net comp.lang.java.programmer:9471

Show key headers only | View raw

On Thursday, November 3, 2011 12:50:45 PM UTC-7, Jan Burse wrote:
> Joshua Cranmer schrieb:
> > The "standard way" (at least, all of the use cases I've ever had for
> > RandomAccessFile) effectively uses the methods that are associated with
> > java.io.DataInput to read data: read(byte[]), and read*().
> 
> I would like to use an arbirary encoding/decoding on top of the
> byte stream to get a character stream. But since RandomAccessFile
> does not implement InputStream/OutputStream, I cannot create
> a InputStreamReader/OutputStreamWrite on top.

No, but you can use the 'DataInput' (and 'DataOutput') methods, as Joshua indicated.

However, the notion of encoding / decoding from a random access file seems fraught with peril.  You have to ensure that you start from a valid position in the file, not, for example, in the second byte of a three-byte character.

-- 
Lew

Back to comp.lang.java.programmer | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Piggypack Encoding/Decoding on RandomAccessFile Jan Burse <janburse@fastmail.fm> - 2011-11-03 19:18 +0100
  Re: Piggypack Encoding/Decoding on RandomAccessFile Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-11-03 14:32 -0500
    Re: Piggypack Encoding/Decoding on RandomAccessFile Jan Burse <janburse@fastmail.fm> - 2011-11-03 20:50 +0100
      Re: Piggypack Encoding/Decoding on RandomAccessFile markspace <-@.> - 2011-11-03 13:52 -0700
        Re: Piggypack Encoding/Decoding on RandomAccessFile Jan Burse <janburse@fastmail.fm> - 2011-11-03 23:13 +0100
        Re: Piggypack Encoding/Decoding on RandomAccessFile Knute Johnson <nospam@knutejohnson.com> - 2011-11-03 16:17 -0700
      Re: Piggypack Encoding/Decoding on RandomAccessFile Lew <lewbloch@gmail.com> - 2011-11-03 13:58 -0700
      Re: Piggypack Encoding/Decoding on RandomAccessFile Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-11-03 20:40 -0400
        Re: Piggypack Encoding/Decoding on RandomAccessFile Jan Burse <janburse@fastmail.fm> - 2011-11-04 02:28 +0100
          Re: Piggypack Encoding/Decoding on RandomAccessFile Jan Burse <janburse@fastmail.fm> - 2011-11-04 03:06 +0100
            Re: Piggypack Encoding/Decoding on RandomAccessFile Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-11-04 08:05 -0400
              Re: Piggypack Encoding/Decoding on RandomAccessFile Jan Burse <janburse@fastmail.fm> - 2011-11-04 16:12 +0100
        Re: Piggypack Encoding/Decoding on RandomAccessFile rossum <rossum48@coldmail.com> - 2011-11-04 16:54 +0000
  Re: Piggypack Encoding/Decoding on RandomAccessFile Jan Burse <janburse@fastmail.fm> - 2011-11-03 23:24 +0100
  Re: Piggypack Encoding/Decoding on RandomAccessFile Arne Vajhøj <arne@vajhoej.dk> - 2011-11-03 20:14 -0400
  Re: Piggypack Encoding/Decoding on RandomAccessFile Roedy Green <see_website@mindprod.com.invalid> - 2011-11-03 21:56 -0700
    [OT] Conspiracy theories are BS (Was: Piggypack Encoding/Decoding on RandomAccessFile) Lew <lewbloch@gmail.com> - 2011-11-04 10:50 -0700
      Re: [OT] Conspiracy theories are BS (Was: Piggypack Encoding/Decoding on RandomAccessFile) Arne Vajhøj <arne@vajhoej.dk> - 2011-11-04 21:07 -0400
      Re: [OT] Conspiracy theories are BS (Was: Piggypack Encoding/Decoding on RandomAccessFile) Roedy Green <see_website@mindprod.com.invalid> - 2011-11-05 20:21 -0700
      Re: [OT] Conspiracy theories are BS (Was: Piggypack Encoding/Decoding on RandomAccessFile) Roedy Green <see_website@mindprod.com.invalid> - 2011-11-05 20:24 -0700
        Re: [OT] Conspiracy theories are BS (Was: Piggypack Encoding/Decoding on RandomAccessFile) Jan Burse <janburse@fastmail.fm> - 2011-11-06 10:36 +0100
      Re: [OT] Conspiracy theories are BS (Was: Piggypack Encoding/Decoding on RandomAccessFile) Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-11-06 14:16 -0600
  Re: Piggypack Encoding/Decoding on RandomAccessFile Stanimir Stamenkov <s7an10@netscape.net> - 2011-11-05 16:51 +0200
    Re: Piggypack Encoding/Decoding on RandomAccessFile Jan Burse <janburse@fastmail.fm> - 2011-11-05 16:27 +0100
      Re: Piggypack Encoding/Decoding on RandomAccessFile Lew <lewbloch@gmail.com> - 2011-11-05 10:03 -0700
        Re: Piggypack Encoding/Decoding on RandomAccessFile Jan Burse <janburse@fastmail.fm> - 2011-11-05 19:37 +0100
          Re: Piggypack Encoding/Decoding on RandomAccessFile Lew <lewbloch@gmail.com> - 2011-11-05 13:25 -0700
        Re: Piggypack Encoding/Decoding on RandomAccessFile Jan Burse <janburse@fastmail.fm> - 2011-11-05 19:47 +0100
        Re: Piggypack Encoding/Decoding on RandomAccessFile Jan Burse <janburse@fastmail.fm> - 2011-11-05 19:56 +0100
          Re: Piggypack Encoding/Decoding on RandomAccessFile Lew <lewbloch@gmail.com> - 2011-11-05 13:29 -0700
            Re: Piggypack Encoding/Decoding on RandomAccessFile Jan Burse <janburse@fastmail.fm> - 2011-11-06 10:42 +0100

csiph-web