LlEscapeURL

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Summary

Function: string llEscapeURL( string url );

Returns a string that is the escaped/encoded version of url, replacing spaces with "%20" etc. The function will escape any character not in [a-zA-Z0-9] to "%xx" where "xx" is the hexadecimal value of the character in UTF-8 byte form.

• string url A valid and unescaped URL.

To clarify, numbers and ASCII7 alphabetical characters are NOT escaped. If a character requires more then one byte in UTF-8 byte form then it returns multiple "%xx" sequences chained together.

This function is similar to functions (e.g. rawurlencode, encodeURIComponent) found in many other languages: 
PHP
rawurlencode
ECMAScript
encodeURIComponent

Caveats

The function is not appropriate for escaping a url all at once, because the ":" after the protocol, and all of the "/" characters delimiting the various parts, will be escaped. Instead, build the url in parts; escaping parts of the path and query string arguments as needed.

Sample url: https://sim3015.aditi.lindenlab.com:12043/cap/a7717681-2c04-e4ac-35e3-1f01c9861322/foo/bar?arg=gra

description of url part example
Base url https://sim3015.aditi.lindenlab.com:12043/cap/a7717681-2c04-e4ac-35e3-1f01c9861322
Trailing path information /foo/bar
Any query arguments, the text past the first "?" in the url arg=gra
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Examples

<lsl> // Provides a clickable link to the LSL Portal by escaping the space in the title // "LSL Portal" here becomes "LSL%20Portal"

string title = "LSL Portal";

default {

   state_entry()
   {
       llOwnerSay("http://wiki.secondlife.com/wiki/" + llEscapeURL(title));
   }

}

</lsl>

See Also

Functions

• llUnescapeURL

Articles

• UTF-8
• Base64

Deep Notes

History

  • Prior to SL versions 1.19.1.81992, this function was limited to returning a maximum of 254 characters. SVC-470

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Signature

function string llEscapeURL( string url );