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From: superpollo on 22 Jan 2010 12:34
superpollo ha scritto:
> Janis Papanagnou ha scritto:
>> superpollo wrote:
>>> Loki Harfagr ha scritto:
>>>> Fri, 22 Jan 2010 16:12:50 +0100, superpollo did cat :
>>>>
>>>>> hi.
>>>>>
>>>>> is there a smarter way to do percent decoding (and encoding) other
>>>>> than
>>>>> a mere succession of sed substitutions?
>>>>>
>>>>> bye
>>>>
>>>> there is.
>>>
>>> will you kindly post it?
>>
>> You still don't get it?
>>
>> Good luck!
>
> ok so the thing is ... i only can ask questions if i already know the
> answer :-) ?
>
> beautiful

ok that's how i do it:

if [ "$REQUEST_METHOD" == "GET" ]
then
DATA=$QUERY_STRING
elif [ "$REQUEST_METHOD" == "POST" ]
then
DATA=$(head --bytes="$CONTENT_LENGTH")
NAME=$(echo "$DATA" | sed -e "s/^\(.*\)=.*$/\1/g")
ENCVALUE=$(echo "$DATA" | sed -e "s/^.*=\(.*\)$/\1/g")
PRINTFVALUE=$(echo "$ENCVALUE" | sed -e "s/+/ /g" \
-e "s/%\([0-9A-F][0-9A-F]\)/\\\\x\1/g")
VALUE=$(printf "$PRINTFVALUE")

any suggestion for improvementt?

bye
From: Seebs on 22 Jan 2010 12:47
On 2010-01-22, superpollo <utente(a)esempio.net> wrote:
> sorry, but this time i do not think that applies to my post. it might
> have been short, but it was clear enough.

The original post wasn't, because that term is not all that widely used.
More generally, you could have given a lot more information. What kinds
of data sets do you need to work on? What have you tried already, and
why doesn't it meet your needs? There are a lot of languages in which
this is a one-liner, I'd guess.

Basically, more data about what you need to do would be helpful. Do
you have significant performance issues to worry about? Are you doing
plain 8-bit strings, or UTF8, or UTF16, or...

So, really, I don't think you gave us nearly enough information to allow us
to give *good* answers.

If I needed to do this, I'd probably just grab either a list of restricted
characters, or a list of allowed characters, and do a short C program to do
the conversion, then do $(url_encode "$foo") in sh.

#include <stdio.h>
#include <string.h>

static char *allowed = "abcdef...";

int
main(int argc, char **argv) {
int i;
char *s;
for (i = 1; i < argc; ++i) {
for (s = argv[i]; *s; ++s) {
if (strchr(allowed, *s)) {
putchar(*s);
} else {
printf("%%%02x", *s);
}
}
putchar('\n');
}
return 0;
}

Fill in "allowed" as you wish.

-s
--
Copyright 2010, all wrongs reversed. Peter Seebach / usenet-nospam(a)seebs.net
http://www.seebs.net/log/ <-- lawsuits, religion, and funny pictures
http://en.wikipedia.org/wiki/Fair_Game_(Scientology) <-- get educated!
From: Seebs on 22 Jan 2010 12:47
On 2010-01-22, superpollo <utente(a)esempio.net> wrote:
> ok so the thing is ... i only can ask questions if i already know the
> answer :-) ?

The point is that you haven't really given anyone enough information
to let them determine what answers would be useful.

Do you have performance requirements?

-s
--
Copyright 2010, all wrongs reversed. Peter Seebach / usenet-nospam(a)seebs.net
http://www.seebs.net/log/ <-- lawsuits, religion, and funny pictures
http://en.wikipedia.org/wiki/Fair_Game_(Scientology) <-- get educated!
From: superpollo on 22 Jan 2010 13:03
Seebs ha scritto:
> On 2010-01-22, superpollo <utente(a)esempio.net> wrote:
>> ok so the thing is ... i only can ask questions if i already know the
>> answer :-) ?
>
> The point is that you haven't really given anyone enough information
> to let them determine what answers would be useful.
>
> Do you have performance requirements?

not really... i just felt that "My" method was ugly :-(

thanks

From: Stephane CHAZELAS on 22 Jan 2010 15:16
2010-01-22, 16:12(+01), superpollo:
> is there a smarter way to do percent decoding (and encoding) other than
> a mere succession of sed substitutions?

$ perl -MURI::Escape -le 'print uri_escape "3% total"'
3%25%20total

--
St�phane
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