URL Encoding
lazarus / 38-Networking and Web Programming

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RobA · 2021-12-10 21:52

Hi all,

I need to pass some arbitrary text as a query string to a URL that
will be opened in the default browser (I'm using Windows) via OpenURL.

Obviously, the query string will need to be URLEncoded - is there a
standard function lurking in a unit somewhere for this, or do I need
to roll my own? A quick google search didn't come up with anything,
but I may have been searching on the wrong terms.

TIA

Rob

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lainz · 2021-12-10 22:40

https://forum.lazarus.freepascal.org/index.php?topic=15088.0
https://forum.lazarus.freepascal.org/index.php/topic,9184.msg329368.ht
ml#msg329368

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RobA · 2021-12-10 23:11

Perfect, thank you!

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AlexTP · 2021-12-11 00:25

I wrote this reply to the wiki -
https://wiki.freepascal.org/URL_encoding/decoding

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Josh · 2021-12-11 00:52

checkout the unit
httpprotocol
it has decode/encode funtionaility as well as other funtions you may
find usefull..

just add it to your uses section,

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Josh · 2021-12-11 11:10

hi alextp,

just looked at wiki question

should safemask include '('  ')' '$' and  '!' ?

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AlexTP · 2021-12-11 11:16

Maybe, I just copied the ready code from the forum.

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Josh · 2021-12-11 11:41

hi just checking someof my code,
i also whitelist these aswell
',/;#?&:+='

but if my whitelist is correct then, hhtpprotocol unit may need
adjusting.

so my list is
A..Z
a..z
0..9
'
*
@
.
_
-
,
/
;
#
?
&
:
+
=
(
)
$
!

<added> I also whitelisted ~ but commented out; can't remember why now
though

Does this need verification and checking?

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AlexTP · 2021-12-11 13:07

If you want to post the FPC issue about it, then yes, it needs
verification first. compare it with some C++ libs, e.g.