LlStringTrim

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/LSL

StringTrim

llStringTrim

Summary

Function: string llStringTrim( string src, integer type );

330	Function ID
0.0	Forced Delay
10.0	Energy

Returns a string that is src with leading and/or trailing white space (spaces, tabs, and line feeds) trimmed from it.

• string	src
• integer	type	–	STRING_TRIM* flag(s)

Constant		Description
STRING_TRIM_HEAD	0x1	Trims spaces off the beginning.
STRING_TRIM_TAIL	0x2	Trims spaces off the end.
STRING_TRIM	0x3	Trims spaces off the beginning and end.

Caveats

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Examples

Returns the number of leading and trailing spaces on a string (not particularly useful but shows how to use the function).

default
{
    state_entry()
    {
        llListen(4, "", llGetOwner(), "");
    }
    on_rez(integer a)
    {
        llResetScript();
    }
    listen(integer chan, string name, key id, string msg)
    {
        //test for and remove wrapping single or double quotes
        if(~llSubStringIndex("'\"", llGetSubString(msg,0,0)))
            if(llGetSubString(msg,-1,-1) == llGetSubString(msg,0,0))
                msg = llDeleteSubString(msg, -1, 0);
        
        //track the length
        integer length = llStringLength(msg);
        
        //trim msg (not necessary to store these to variables but makes reading easier)
        string trim_left = llStringTrim(msg, STRING_TRIM_HEAD);
        string trim_right = llStringTrim(msg, STRING_TRIM_HEAD);
        string trim = llStringTrim(msg, STRING_TRIM);

        //output the results
        llOwnerSay("Initial length = " + (string)length +
                 "\nLeading Spaces = " + (string)(length - llStringLength(trim_left))+
                 "\nTrailing Spaces = " + (string)(length - llStringLength(trim_right))+
                 "\nTrimmed Message = \"" + trim + "\"");
    }
}

Notes

The following examples will make the same result.

string src = "   Duh    ";
st = llStringTrim(src, STRING_TRIM_HEAD);
st = llStringTrim(st , STRING_TRIM_TAIL);

string src = "   Duh    ";
st = llStringTrim(src, STRING_TRIM);

This is because (STRING_TRIM_HEAD | STRING_TRIM_TAIL) == STRING_TRIM.

Deep Notes

History

• Introduced in 1.13.4 onwards...

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Signature
function string llStringTrim( string src, integer type );