Re: [Chicken-users] Dumbass newbie questions. Sorry.
Excellent, thanks. That works for me. On Thu, Apr 16, 2009 at 3:58 PM, Shawn Rutledge wrote: > 2009/4/16 Neil Baylis : > > Re processes/pipes, I had found those by looking in the manual, but am > not > > yet sharp enough in scheme to understand them. It looks as though > > (process...) is what I need, but I'm not sure how to use it. > > It will give you "ports" for stdin/stdout. e.g. (example to ssh to a > server, start a process and interact with it): > > (let-values ([(recv-port send-port connppid) (process "ssh > rutle...@neutron \"cd prj/dscm/services; ./x10-wish\"")]) > ... > then you can send and receive stuff, e.g. > > (display "hey there" send-port) > and > (let ([response (read recv-port)]) > ... figure out what to do with it ...) > > This chapter provides a starting overview of I/O in Scheme in general > (not Chicken-specific): > > http://www.scheme.com/tspl3/io.html > ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] Dumbass newbie questions. Sorry.
2009/4/16 Neil Baylis : > Re processes/pipes, I had found those by looking in the manual, but am not > yet sharp enough in scheme to understand them. It looks as though > (process...) is what I need, but I'm not sure how to use it. It will give you "ports" for stdin/stdout. e.g. (example to ssh to a server, start a process and interact with it): (let-values ([(recv-port send-port connppid) (process "ssh rutle...@neutron \"cd prj/dscm/services; ./x10-wish\"")]) ... then you can send and receive stuff, e.g. (display "hey there" send-port) and (let ([response (read recv-port)]) ... figure out what to do with it ...) This chapter provides a starting overview of I/O in Scheme in general (not Chicken-specific): http://www.scheme.com/tspl3/io.html ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] Dumbass newbie questions. Sorry.
On Thu, Apr 16, 2009 at 3:28 PM, Nicholas "Indy" Ray wrote: > err http://chicken.wiki.br/man/3/Unit%20posix#pipes for the third link. > > Indy > > On 4/16/09, Nicholas "Indy" Ray wrote: > > On 4/16/09, neil.bay...@gmail.com wrote: > > > First question: For various reasons, I can't switch to chicken 4 any > time > > > soon. But I can't find the eggs for 3.4 etc. Where are they? > > > > > > Chicken-setup will download the chicken eggs, the ref is here: > > http://chicken.wiki.br/eggref/3/index > > > > > > > Second question: What's the canonical scheme (esp. Chicken) way to do > > > pexpect like things? I.e., spawn a long lived process, send strings to > its > > > stdin, and deal with what is sends to its stdout? Is there a library? > An > > > example? > > > > > > Not sure, but there are some process funcs in the possix unit: > > http://chicken.wiki.br/man/3/Unit%20posix#processes > > > > Additionally on opening a pipe: > > http://chicken.wiki.br/man/3/Unit%20posix#processes > > > > > > Indy > > > Thanks, I see the eggs now. Re processes/pipes, I had found those by looking in the manual, but am not yet sharp enough in scheme to understand them. It looks as though (process...) is what I need, but I'm not sure how to use it. Neil ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] Dumbass newbie questions. Sorry.
err http://chicken.wiki.br/man/3/Unit%20posix#pipes for the third link. Indy On 4/16/09, Nicholas "Indy" Ray wrote: > On 4/16/09, neil.bay...@gmail.com wrote: > > First question: For various reasons, I can't switch to chicken 4 any time > > soon. But I can't find the eggs for 3.4 etc. Where are they? > > > Chicken-setup will download the chicken eggs, the ref is here: > http://chicken.wiki.br/eggref/3/index > > > > Second question: What's the canonical scheme (esp. Chicken) way to do > > pexpect like things? I.e., spawn a long lived process, send strings to its > > stdin, and deal with what is sends to its stdout? Is there a library? An > > example? > > > Not sure, but there are some process funcs in the possix unit: > http://chicken.wiki.br/man/3/Unit%20posix#processes > > Additionally on opening a pipe: > http://chicken.wiki.br/man/3/Unit%20posix#processes > > > Indy > ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] Dumbass newbie questions. Sorry.
On 4/16/09, neil.bay...@gmail.com wrote: > First question: For various reasons, I can't switch to chicken 4 any time > soon. But I can't find the eggs for 3.4 etc. Where are they? Chicken-setup will download the chicken eggs, the ref is here: http://chicken.wiki.br/eggref/3/index > Second question: What's the canonical scheme (esp. Chicken) way to do > pexpect like things? I.e., spawn a long lived process, send strings to its > stdin, and deal with what is sends to its stdout? Is there a library? An > example? Not sure, but there are some process funcs in the possix unit: http://chicken.wiki.br/man/3/Unit%20posix#processes Additionally on opening a pipe: http://chicken.wiki.br/man/3/Unit%20posix#processes Indy ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
[Chicken-users] Dumbass newbie questions. Sorry.
First question: For various reasons, I can't switch to chicken 4 any time soon. But I can't find the eggs for 3.4 etc. Where are they? Second question: What's the canonical scheme (esp. Chicken) way to do pexpect like things? Ie, spawn a long lived process, send strings to its stdin, and deal with what is sends to its stdout? Is there a library? An example? Thank you, Neil Baylis ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] egg path?
On Thu, Apr 16, 2009 at 11:09 AM, Shawn Rutledge wrote: > #;1> (use dbus) > > Error: (import) during expansion of (import ...) - cannot import from > undefined module: dbus It didn't say "; loading ./dbus.so ..." though, which is why I don't think it did. #;1> (use dbus) ... #;1> dbus:send Error: unbound variable: dbus:send #;1> (require-library dbus) ; loading ./dbus.so ... Error: unbound variable: dbus:vtable #;1> dbus:send # ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] egg path?
On Thu, Apr 16, 2009 at 2:15 AM, felix winkelmann wrote:
> On Thu, Apr 16, 2009 at 9:40 AM, Shawn Rutledge
> wrote:
>> With Chicken 3, (use egg) can load a compiled egg.so in the cwd. This
>> is especially handy during egg development - you can compile and test
>> repeatedly without having to install. Chicken 4 doesn't seem to do
>> that. Is there some concept of an egg path, where it will look for
>> the library?
>
> `use' also does an `import', so you probably should use `require-library'
> or `require', unless your compiled file also contains a module definition.
> Loading from the cwd should still work. See also `repository-path' in the
> manual.
You're right, it's the import in that case. As part of the egg
porting I should switch to the module system anyway, I guess, since
this egg has a dbus: prefix on everything. Currently it has (declare
(export ...)) And then (use dbus) will work, right?
#;1> (use dbus)
Error: (import) during expansion of (import ...) - cannot import from
undefined module: dbus
Call history:
(use dbus)
(##core#require-extension (dbus) #t)
(begin (begin (##sys#require (quote
dbus)) (import dbus)) (##core#undefined))
(begin (##sys#require (quote dbus))
(import dbus))
(##sys#require (quote dbus))
(quote dbus)
(import dbus) <--
#;1> (require "dbus")
; loading ./dbus.so ...
Error: unbound variable: dbus:vtable
Call history:
(require "dbus")
##sys#peek-c-string
dbus.scm: 78 max
dbus.scm: 164 make-vector
dbus.scm: 165 make-vector
dbus.scm: 166 make-vector
dbus.scm: 175 gensym
dbus.scm: 573 dbus:vtable <--
#;1> (require-library "dbus")
Error: invalid extension specifier: "dbus"
Call history:
(require-library "dbus")
(##core#require-extension ("dbus") #f) <--
#;1> (require-library dbus)
; loading ./dbus.so ...
Segmentation fault
(the segfault doesn't occur if I try it from a fresh csi instance though)
dbus:vtable is like this:
(define-foreign-record (dbus:vtable "struct DBusObjectPathVTable")
(constructor: dbus:make-vtable-impl)
(destructor: dbus:free-vtable)
(c-pointer unregister_function)
(c-pointer message_function)
(c-pointer dbus_internal_pad1)
(c-pointer dbus_internal_pad2)
(c-pointer dbus_internal_pad3)
(c-pointer dbus_internal_pad4))
BTW apparently I still have to ask for my egg dirs to be created in
svn under release/4? If so, please create the ones for dbus and gps.
___
Chicken-users mailing list
Chicken-users@nongnu.org
http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] egg path?
On Thu, Apr 16, 2009 at 2:40 AM, Shawn Rutledge wrote: > With Chicken 3, (use egg) can load a compiled egg.so in the cwd. This > is especially handy during egg development - you can compile and test > repeatedly without having to install. Chicken 4 doesn't seem to do > that. Is there some concept of an egg path, where it will look for > the library? Hi Shawn, What's the error you're getting? It works for me, with 2 caveats: 1) In both Chicken 3 and 4, an installed extension takes precedence over an .so in the current directory. 2) In Chicken 4, (use xxx) will perform an import, which will fail if you didn't generate an import library or if your egg is not a module at all. If your .so isn't a module, use (require-library xxx) instead. This can be a bit annoying from the command line as csi does not have a "require-library" equivalent to -R. Instead I have been doing `csi -e '(require-library xxx)' ...` during testing. Note: the manual says that USE or REQUIRE-EXTENSION is "equivalent to (require-library ID ...) but performs an implicit import, if necessary". In my experience, it always performs an import; there is no 'if necessary' about it. I don't know which is the intended behavior. Jim ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] chicken-install: prefix problem
On Tue, Apr 14, 2009 at 10:28 PM, fulvio ciriaco wrote: > I installed from svn trunk and chicken-install works fine now. > It took some time to understand how to teach the build system where > system libraries are kept. > Perhaps README or Makefile.$(PLATFORM) should document > C_COMPILER_OPTIONS > LINKER_OPTIONS > > Here, NetBSD, one needs > C_COMPILER_OPTIONS += -I/usr/pkg/lib > LINKER_OPTIONS += -L/usr/pkg/lib -Wl,-R/usr/pkg/lib > I've added a note. Thanks for pointing this out. cheers, felix ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] Keyword parameters bug?
Should be fixed in svn rev. 14268. Thanks for reporting this. cheers, felix ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
[Chicken-users] egg path?
With Chicken 3, (use egg) can load a compiled egg.so in the cwd. This is especially handy during egg development - you can compile and test repeatedly without having to install. Chicken 4 doesn't seem to do that. Is there some concept of an egg path, where it will look for the library? ___ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
