World: r3wp

I've brought this up before as well, but it looks like it will be 
there for R3, according to the recent blog on it.

I noticed this:
>> to-url [http b c]
== http://b/c
>> to-url [http b 125]
** Script Error: Invalid argument: 125
** Where: to-url
** Near: to url! :value


Couldn't it be useful to have 125 accepted as a port number since 
it's the first integer in the block?

why isn't 125 valid anyways?  

 http://b/125

 is a valid url AFAIK  no?

yes it is. I half-expect Gabriele or Ladislav to come back with an 
answer like "no, because if we allowed that, the Internet would explode" 
or something :-)

Yes it is - completely valid as a URL.

I came up with my own:

>> to-url [http a 125]
== http://a:125

or

== http://a/125


so probably not a good idea to autmatically assume it's a port number.

(hopefully) quick question - I know you can use prin "^(page)" (or 
prin "^L") to clear the current terminal window - is there something 
just as simple to clear just the current line?  Or move the cursor 
back to the beginning of the line?

prin cr

Sunanda;  You should have mentioned loading the Terminal User Interface 
and all the funky VT100 escape sequences and the...
Just kidding :)

I' not that evil .... not yet, anyway :-)

Henrik: actually, I guess you're the first to discover that :)

it's funny that it doesn't form integers though. maybe there's some 
reason for it.

gabriele, it doesn't eat tuples either (IP addresses)

i guess the implementation is somewhat unfinished. i wonder if it 
was done for some reason...

worth RAMBO'ing?

i'm asking Carl (though he seem to be away this week)

stupid question: how do you form a readable error message from an 
error object, such as it appears in the console?

Hope this is not a stupid answer......
 xx: disarm try [0 / 0]
probe xx

check out xx, and see what bits you want to print......You'll need 
to translate the 400 into "math error" ...Not sure about that bit....Can 
you find anything in the system object for that?

hmm... I don't know. I thought there was a simple method to convert 
such an error object into a console style error.

I get an error in Rugby:

make object! [
    code: 302
    type: 'script
    id: 'no-arg
    arg1: none
    arg2: 'obj-a
    arg3: none
    near: [request-sync/action [] func [obj-a obj-b][
            all [
                obj-a obj-b
                insert probe obj-a/results probe obj-b/results
                unique/skip obj-a/results 3
                obj-b/results: obj-a/results
            ]
        ]]
    where: 'safe-exec
]

which I'm not sure how to read

Compare
  do
with
  probe xx: disarm  try [do]

Both get you a 302/no-arg message. Just the console message is chattier.

You can of course  print out a terser form using the parts of the 
disarmed error object:
 print ["error: " xx/id "near" xx/where]
Is that what you mean?

doesn't it mean you didn't supply the argument obj-a ?

I Henrik is wonder if there is a call to transform the error object 
into the "official" error Message.  AFAIK there is no such official 
stub... maybe someone knows this func?  after 8 years I still have 
not come across this.

my god... I must be tired.... that message should start with:

 "I Think Henrik is wondering if"

Hi,  I saw a pretty good error parser in Cyphre's rebsite vconsole.r 
script a long time ago...  

The code is copyright 2001 Cyphre but if you ask nice I'll bet he 
shares it, then again maybe not. So please ask.

Check REBOL/Public/Sites/Cyphre/vconsole.r from the Viewtop.

Henrik, I would use this function from Gabriele:
http://anton.wildit.net.au/rebol/freezer/form-error.r

Sunanda - Thanks!

graham and maxim are both right. I don't know what the error message 
really means and was hoping to clear that up by translating it to 
a standard console message.

trying form-error.r gives:

none is missing its obj-a argument


OK. :-) It would mean that the function I'm passing directly is missing 
an argument. I was confused by the none! part.

Can anybody explain to me, why this thorws 'false even if the page 
exists? thanks.


>> exists? http://www.aving.co.kr/newproduct/default.asp?p1=newproduct&mode=read&table_id=English&num=79
connecting to: www.aving.co.kr
== false

>> exists? http://www.aving.co.kr/newproduct/default.asp?p1=newproduct&mode=read&table_id=English&num=79

URL Parse: none none www.aving.co.kr none newproduct/ default.asp?p1=newproduct&mode=read&table_id=English&num=79
Net-log: ["Opening" "tcp" "for" "HTTP"]
connecting to: www.aving.co.kr

Net-log: {HEAD /newproduct/default.asp?p1=newproduct&mode=read&table_id=English&num=79 
HTTP/1.0
Accept: */*
Connection: close
User-Agent: REBOL View 1.3.2.3.1
Host: www.aving.co.kr
}
Net-log: "HTTP/1.1 500 Internal Server Error"
== false
>>

using trace/net - Net-log: "HTTP/1.1 500 Internal Server Error" that's 
what the page returns

ech... too late

hehe

it returs 500 response even to my Firefox, but it's displayed anyway.. 
interesting.

it's goog vay how to hide content from bots:)

(a good way)

so is there another way how to check if URL is valid?

read it ?

no .. don't know

You might be able to fiddle with the http scheme for this condition.....
If you do this:
   zz: open http://www.aving.co.kr
   probe zz
   find mold zz "response-actions:"
You'll see there is a tale of acceptable reponse codes.

So (just an idea) patch that to include 500, and then check if the 
in-buffer field has any <html> content

but that doesn't mean it's valid... the content of the buffer after 
500 response is usualy the message that there was an error on the 
server and that you can contact admins

if servers like the one above hase content, they are not going in 
the standard way

(hase = has)

Good point --  he has to check with some care what's there.
Usually, it's a text string, so no HTML.

I'm only sugesting he patch the port for *this* website, not all 
sites; and some eyeballing should help him decide what is a real 
500 and what is a faked one.....Maybe, anyway.

anyway... the exists? should probably return true on url which has 
internal error as the url exists but has problem at this moment.

hard to say, maybe the 500 would turn to a 404 if the error went 
away...

since one expects to be able to READ something tha EXISTS?, i think 
returning FALSE there is the best thing to do - since READ would 
error out.

tha = that

I just had a language flash... what if we used the comma as a stop 
word for variable argument enabled funcs...

ex:

sum 1 2 3 4 ,

sum would be defined as 


sum: func [**] [ result: 0 foreach value ** [result: result + item] 
result]