[#41581] Ruby 1.6.7 dieing of segfault — Dossy <dossy@...>

I've got something that's fairly reproducible in 1.6.7. Is

11 messages 2002/06/02
[#41582] Re: Ruby 1.6.7 dieing of segfault — Nobuyoshi Nakada <nobu.nokada@...> 2002/06/02

Hi,

[#41660] dynamic attr_accessor?? — Markus Jais <mjais@...>

hello

16 messages 2002/06/03

[#41755] HTML Parser suggestions wanted — Ned Konz <ned@...>

I've written an HTML parser that builds trees from HTML source. After

13 messages 2002/06/04

[#41809] eval and local variable — "Park Heesob" <phasis@...>

15 messages 2002/06/05

[#41819] mod_ruby and module space — "Sean O'Dell" <sean@...>

It seems that if I execute a script using mod_ruby, I cannot call

18 messages 2002/06/05

[#41867] Pascal-like 'with' statement? — Philip Mak <pmak@...>

Is there something like Pascal's with statement? I'd like to turn this

18 messages 2002/06/06

[#41919] 1-second events — Paul Brannan <pbrannan@...>

I need to create an event that occurs exactly once per second.

15 messages 2002/06/06

[#42086] ANN: REXML 2.3.5 && 2.2.3 — Sean Russell <ser@...>

<posted & mailed>

31 messages 2002/06/09
[#42091] Re: ANN: REXML 2.3.5 && 2.2.3 — Sean Russell <ser@...> 2002/06/09

<posted & mailed>

[#42092] RE: ANN: REXML 2.3.5 && 2.2.3 — <james@...> 2002/06/09

> Well, XMLSchema may be troublesome to interpret, but it isn't

[#42192] ruby-dev summary 17252-17356 — Minero Aoki <aamine@...>

Hi all,

81 messages 2002/06/11
[#42290] Re: a new block parameter/variable notation (Re: ruby-dev summary 17252-17356) — Kent Dahl <kentda@...> 2002/06/12

Not wanting to flog a dead horse, but I just wonder what the final word

[#42295] Re: a new block parameter/variable notation (Re: ruby-dev summary 17252-17356) — matz@... (Yukihiro Matsumoto) 2002/06/12

Hi,

[#42455] Application server & web developement enviroment — "Radu M. Obad磚 <whizkid@...>

Howdy,

14 messages 2002/06/14
[#42459] Re: Application server & web developement enviroment — Austin Ziegler <austin@...> 2002/06/14

On Fri, 14 Jun 2002 15:55:31 +0900, Radu M. Obadwrote:

[#42472] ANN: Programmierung in Ruby — "Juergen Katins" <katins.juergen@...>

Programmierung in Ruby Online gibt es jetzt mit ausfrlichem

14 messages 2002/06/14

[#42504] Are Unix tools just slow? — Chris Gehlker <gehlker@...>

Awhile back I was asking for help with a unixy way to search the mounted

48 messages 2002/06/14
[#42516] Re: Are Unix tools just slow? — "Daniel P. Zepeda" <daniel@...> 2002/06/15

On Sat, 15 Jun 2002 07:14:38 +0900

[#42506] Re: Are Unix tools just slow? — Rick Bradley <rick@...> 2002/06/14

* Chris Gehlker (gehlker@fastq.com) [020614 17:18]:

[#42512] Re: Are Unix tools just slow? — Chris Gehlker <gehlker@...> 2002/06/15

On 6/14/02 3:34 PM, "Rick Bradley" <rick@rickbradley.com> wrote:

[#42513] opengl for ruby, please help — ccos <ccos@...> 2002/06/15

unix newby failing miserably here:

[#42507] mpg123 — Tobias Reif <tobiasreif@...>

Hi,

15 messages 2002/06/14

[#42546] File.new('foo', 0600 , 'wb') — Tobias Reif <tobiasreif@...>

Hi,

21 messages 2002/06/15
[#42552] Re: File.new('foo', 0600 , 'wb') — Tobias Reif <tobiasreif@...> 2002/06/15

Dossy wrote:

[#42591] Kernel#select questions — Wilkes Joiner <boognish23@...>

I'm trying to track down a bug where Kernel#select is returning [[],[],[]] as

12 messages 2002/06/17

[#42617] eRuby on Mac OS X — Jim Menard <jimm@...>

I've searched ruby-talk for this topic, and the only messages I found show

13 messages 2002/06/17

[#42674] REXML in C — "Radu M. Obad磚 <whizkid@...>

Hi,

20 messages 2002/06/18

[#42771] Why is I/O slow? — Clifford Heath <cjh_nospam@...>

Ok, folk, time to try again. It's nothing to do with SHA-1.

61 messages 2002/06/20
[#42831] Re: Why is I/O slow? — Clifford Heath <cjh_nospam@...> 2002/06/21

Yukihiro Matsumoto wrote:

[#42836] RE: Why is I/O slow? — "Mike Campbell" <michael_s_campbell@...> 2002/06/21

> With respect, this doesn't sound like a smart idea. The glibc folk have

[#42838] Re: Why is I/O slow? — Albert Wagner <alwagner@...> 2002/06/21

On Thursday 20 June 2002 10:10 pm, Mike Campbell wrote:

[#42839] Re: Why is I/O slow? — Austin Ziegler <austin@...> 2002/06/21

On Fri, 21 Jun 2002 12:16:24 +0900, Albert Wagner wrote:

[#42928] GOOD DEAL — "DR. ISA BELLO" <dr_isa@...>

FROM:DR ISA BELLO

11 messages 2002/06/22

[#42982] No exceptions from String#to_i — "Hal E. Fulton" <hal9000@...>

I've been bitten by this before... maybe

19 messages 2002/06/24
[#42983] Re: No exceptions from String#to_i — ts <decoux@...> 2002/06/24

>>>>> "H" == Hal E Fulton <hal9000@hypermetrics.com> writes:

[#42986] Re: No exceptions from String#to_i — Nikodemus Siivola <tsiivola@...> 2002/06/24

[#43122] Re: help (ruby-talk ML) — Benjamin Peterson <bjsp123@...>

20 messages 2002/06/27
[#43123] Re: help (ruby-talk ML) — Dave Thomas <Dave@...> 2002/06/27

Benjamin Peterson <bjsp123@yahoo.com> writes:

[#43124] RE: help (ruby-talk ML) — Bob Calco <robert.calco@...> 2002/06/27

Yes, I would gladly volunteer considerable effort to this end. I have

[#43147] Ruby on Mac OS X — Tobias Reif <tobiasreif@...>

Hi,

24 messages 2002/06/28

[#43174] eruby SAFE question — Dylan Northrup <docx@...>

I'm trying to implement a replacement for the standard apache file listings

39 messages 2002/06/28
[#43249] documentation licenses (was: eruby SAFE question) — Tobias Reif <tobiasreif@...> 2002/06/30

Dave Thomas wrote:

[#43250] Re: documentation licenses (was: eruby SAFE question) — Dave Thomas <Dave@...> 2002/06/30

Tobias Reif <tobiasreif@pinkjuice.com> writes:

[#43255] RE: documentation licenses (was: eruby SAFE question) — <james@...> 2002/06/30

>

[#43280] Re: documentation licenses (was: eruby SAFE question) — "Juergen Katins" <juergen.katins@...> 2002/07/01

Tobias Reif wrote

[#43282] Re: documentation licenses (was: eruby SAFE question) — David Alan Black <dblack@...> 2002/07/01

On Mon, 1 Jul 2002, Juergen Katins wrote:

[#43381] RE: documentation licenses (was: eruby SAFE question) — <james@...> 2002/07/02

> From: David Alan Black [mailto:dblack@candle.superlink.net]

Question: how to do (repeated) bidirectional communication with another process via stdin/stdout ?

From: Carsten Gronski <cgronski@...>
Date: 2002-06-15 17:33:20 UTC
List: ruby-talk #42545
Hello,

I 'am rather new to Ruby, so please excuse me in case this question might sound stupid, easy etc., but I have not found anything useful concerning my problem on this mailing list or other internet resources about Ruby.
My question is: 
Is it possible to perform a repeated bidirectional communication between 
my Ruby program and another process via stdin/stdout ?
I need to open the other program (start a process) and then conduct a "dialog" with it.
The other program has a  communication protol, which takes an interface string as an input (on stdin) and synchronously returns a response interface string as an output (on stdout).
A typical communication  would be like this :

 (1) Ruby program opens other process .
 (2) Ruby program sends an interface string to  other process on stdout. 
 	(the first call would be a login for db-connection and initialization by the system).
 (3)  the other process executes the called function and returns the response to ruby .
 (4)  the Ruby program reads the response string from stdin and parses it.
 (5)  the Ruby program sends the next interface call to the process.
   
   ... this type of call - response communication protocol. Step (2) -(4) 
   	can be repeated n times on the open connection channel.
   
 (n) the Ruby program closes the other process when it is finished.
 
My problem is, that the standard Ruby IO class seems not to allow this type of repeated
bidirectional communication dialog with another process.
Something like ke = IO.popen("ke.exe", "r+") would give me a bidirectional communication channel,
but unfortunatly it is not possible to read from the I/O stream  until the write end of the I/O stream is closed. The write end cannot be reopened for a second call.
(This means I would have to do ...  ke.close_write() ...  in order to be able to read the response, but not be able to do a second  ke.print(mySecondInterfaceCall) method call).
I have written a Ruby API library for the interface format of this system 
(in order to create the call interfaces and parse the response), 
but I' m quite stuck with the communication problem I tried to describe above. 
I would appreceate  very much if someone could give me a hint how to accomplish this task with Ruby.(It should possibly run under on Windows). 

regards,

Carsten

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