Difference between revisions of "SubStringLastIndex"
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(normally i disapprove of such shenanigans, but then I also disapprove of using recursion, so it's moot. This should keep the heap from ballooning as quickly (which will help in LSO but not in Mono)) |
m (More obvious this way (avoids the negative index issue), since we evaluate from right to left, the recursion should happen before the parameters for the add are pushed onto the stack.) |
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| Line 42: | Line 42: | ||
return 0; | return 0; | ||
integer index = llSubStringIndex(vStrSrc, vStrTst); | integer index = llSubStringIndex(vStrSrc, vStrTst); | ||
if (index == -1) //found, look again | |||
if (index | return -1; | ||
return index + 1 + uSubStringLastIndex(llDeleteSubString(vStrSrc, 0, index), (vStrSrc = vStrTst = "") + vStrTst); | |||
} | } | ||
/*// Contributed Freely to the Public Domain without limitation by Sasun Steinbeck. //*/</lsl> | /*// Contributed Freely to the Public Domain without limitation by Sasun Steinbeck. //*/</lsl> | ||
Revision as of 23:22, 23 March 2012
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials | User-Defined Functions | Void's User Page |
User-Defined Function: integer uSubStringLastIndex( string vStrSrc, string vStrTst );
Returns a integer that is the positive index of the last vStrTst within vStrSrc
- vStrSrc: source string to check
- vStrTst: string to look for
if vStrTst is not found in vStrSrc -1 is returned.
the index of the first character is 0
Code:
- LSO: 182 bytes
- MONO: 1024 bytes
<lsl>integer uSubStringLastIndex( string vStrSrc, string vStrTst ){
integer vIdxFnd =
llStringLength( vStrSrc ) -
llStringLength( vStrTst ) -
llStringLength(
llList2String(
llParseStringKeepNulls( vStrSrc, (list)vStrTst, [] ),
0xFFFFFFFF ) //-- (-1)
);
return (vIdxFndCaveats
- Performs a literal match (case sensitive).
- Wildcards and RegEx are not supported.
- Attempting to match an empty string ("") will return 0 instead of -1.
Notes
- This function is operates exactly like llSubStringIndex (including caveats), from the opposite end of the string.