Re: Test for valid URL?
Re: Test for valid URL?
- Subject: Re: Test for valid URL?
- From: Thomas Fischer <email@hidden>
- Date: Fri, 17 Sep 2010 10:00:44 +0200
Hi Michael,
>> A couple of other people have mentioned that the word "valid" is ambiguous
>> but for "standard" URLs this works
>> try
>> do shell script "curl http://hgghjgjhghj/";
>> on error
>> display dialog "No a valid URL"
>> end try
>> If curl can't resolve the url it returns an error which AppleScript's try
>> statement can catch.
>> Steve
>
> Thanks to everyone who has replied so far. Actually I do want to be
> able to respond to different protocols, not just http, for both local
> and network resources. Unfortunately neither
>
> open location "some random string"
>
> nor
>
> do shell script "curl some random string"
>
> actually returns an error on my system (the first one returns nothing,
> the second returns an empty string), and they both just fail silently
> if I wrap them in Steve's try block.
This sounds like a problem of your system.
On my system (10.6.4, using AppleScript-Editor):
do shell script "curl some random string"
--> error "\rcurl: (6) Couldn't resolve host 'some'\r\rcurl: (6) Couldn't resolve host 'random'\r\rcurl: (6) Couldn't resolve host 'string'" number 6
You may want to try curl on the command line (in the Terminal) to see if something goes wrong there.
So I would suggest to use something like this:
try
do shell script "curl http://hgghjgjhghj/";
on error theErr
display dialog "Problem: " & theErr
end try
which should yield
tell current application
do shell script "curl http://hgghjgjhghj/";
--> error "\rcurl: (6) Couldn't resolve host 'hgghjgjhghj'" number 6
end tell
tell application "AppleScript Editor"
display dialog "Problem: \rcurl: (6) Couldn't resolve host 'hgghjgjhghj'"
--> {button returned:"OK"}
end tell
I thought you where looking for something like this.
Furthermore if you just want to check if the URL works w/o downloading the file, you can use
do shell script "curl --head http://hgghjgjhghj/";
or
do shell script "curl -I http://hgghjgjhghj/";
(the same effect) to load only the HEAD response from the server.
Cheers
ThomasAttachment:
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