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Killing passed text...

Posted on 2000-03-21
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Last Modified: 2010-03-05
This should be simple: is there a way to supress the output of the special escape characters in Perl?  In other words, if the user enters something like:

"I like to eat cheese!"

Can I keep it from being passed as:

"I+like+to+eat+cheese%21"?  

I need to output the text back to HTML, and it's obviously no good to me like this.  Do I just have to do an s///?  Or is there an easier way?
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Question by:Raydot
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7 Comments
 
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Expert Comment

by:binkzz
ID: 2639788
You can't pass it any other way, but you can decode it by using two regular expressions:

$key=~s/\+/ /g;
$key=~s/%([0-9a-fA-f]{2})/pack("c",hex($1))/ge;

Binkzz
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Expert Comment

by:ozo
ID: 2640105
why not pack("H*",$1)?
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Expert Comment

by:binkzz
ID: 2640126
It works and doesn't particulary slow down the system
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Accepted Solution

by:
maneshr earned 50 total points
ID: 2640189
if you have the URI::Escape PERL module, try this....

if you dont, i would suggest that you install the same from www.cpan.org.

its very useful, since you dont have to worry about all the special characters to escape and unescape.

==============escape.pl
#!/usr/local/bin/perl

use URI::Escape;

$str="I like to eat cheese!";

print "Original string ",$str,"\n";
$safe = uri_escape($str);
print "After Escaping ",$safe,"\n";

$str  = uri_unescape($safe);
print "After Un-Escaping ",$str,"\n";
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Expert Comment

by:binkzz
ID: 2640235
Can I just find out what's actually wrong with my solution?

Binkzz
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Author Comment

by:Raydot
ID: 2640628
Who said there was anything wrong with your solution?  I think man and ozo are just offering alternatives.

I'll have to check for that URI::Escape module...Ozo, I don't really understand your pack solution.  Thanks!
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Author Comment

by:Raydot
ID: 2810997
Did y'all think I forgot about this question?  Thanks for all your help!
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