Cleaning up stack URLs

[Peter T. Evensen]

Could you do something like this?

set the itemdelimiter to "/"
repeat with i = 3 to the number of items in tURL
    put URLEncode(item i of tURL) into item i of tURL
end repeat

Martin Baxter wrote:
> Devin Asay wrote:
>> I'm working on a stack that launches stacks from the web with 'go 
>> stack URL'.
>>
>> I know there are certain characters that are illegal or unsafe in URL 
>> strings. (See http://tools.ietf.org/html/rfc1738) These include 
>> space, quote and a number of others. Most web browsers automatically 
>> escape these characters for you, so, e.g., a space is converted to 
>> '%20' before the browser sends the request to the server.
>>
>> I'm about to start writing a function that checks a potential stack 
>> URL for illegal and unsafe characters and converts them to escape 
>> sequences, but I don't want to reinvent the wheel if such a thing 
>> already exists.
>>
>> Am I right that there is no equivalent functionality built into Rev? 
>> I know about URLEncode(), of course, but that serves a different 
>> purpose--formatting strings for POSTing, rather than formatting 
>> strings for retrieving files from a server (a GET request?) Am I 
>> understanding this correctly?
>>
>
> I think you are right Devin, unfortunately. Anyway, you can't give the 
> whole url to urlencode as it will also encode the slashes and colons 
> etc. etc.
>
> Looking at my php manual, I find php has 2 functions:
> urlencode()
> rawurlencode()
>
> and the difference is described as the treatment of space: + in 
> urlencode, %20 in rawurlencode
>
> This is a surmise, but I think that RR urlencode is the same as php's 
> identically named function. If so, a shortcut might be to replace the 
> spaces yourself before applying urlencode() which should deal with any 
> remaining problem characters
>
> something like (untested)
>
> put "http://www.whatever.com/" into tdomainpart
> put "exciting content/big file.html" into tpath
> replace space with "%20" in tpath
> set itemdelimiter to "/"
> put empty into t_assemble
> repeat with i = 1 to the number of items in tpath
>   put urlencode(item i of tpath) into item i of tencodedpath
> end repeat
>
> put tdomainpart & tencodedpart into tencodedurl
>
>
>> A related issue is, are there characters that are disallowed as 
>> filenames for rev stackfiles? I can't find any such list anywhere. I 
>> suppose this would be determined by the host OS?
>>
>
> That's what I would expect. I would avoid naming a rev stack beginning 
> with a tilde though, because of the temp file made when saving.
>
> Martin Baxter
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