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[REBOL] Re: problems with url...

From: gscottjones:mchsi at: 18-Jun-2002 14:14

From: "Cyphre"
> I have this problem, how to 'read following url from rebol? > > http://slovnik.nettown.cz/?co=naslepo&kde=A-%C8 > > Anyone ?
Hi, Cyphre, It is easier to explain how to bypass the problem than to explain where the real problem lies. :) The problem seems to be that the percent sign can be used to escape hex coded characters. The dehex-ed character for C8 is . When the url is entered, the interpreter immediately substitues the character "" for "%C8". However, the url parser will no longer parse the entire url, because "" is not a part of its rules. Probing the http scheme *after* a failed read shows that the file portion contains the fragment "?co=naslepo&kde=A-", indicating to me that it failed at the next character, which *it* thinks is instead of "%" (followed by "C8", of course). The way to work around the problem is to do something like the following: read rejoin [http://slovnik.nettown.cz/?co=naslepo&kde=A- "%C8"] which then returns the page. What I am unsure about is exactly "where" the problem lies? Is it that some urls contain hex encoded characters and that REBOL improperly translates the results in an incorrect manner? I do not know for sure. I am not sure why my work-around works! Unfortunately, I am out of time to explore the problem further right now. Hope this helps a bit anyway. --Scott Jones