StrStr: Difference between revisions
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|<small>Author: [[{{ns:2}}:sunjammer|sunjammer]] ([[{{ns:3}}:sunjammer|talk]], [[{{ns:-1}}:Contributions/sunjammer|contrib]])</small> | |||
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== Description == | == Description == | ||
This function searches for a substring on a string, and returns itself plus the remaining of the string. Doesn't work with Unicode. | This function searches for a substring on a string, and returns itself plus the remaining of the string. Doesn't work with Unicode. | ||
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FunctionEnd | FunctionEnd | ||
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Revision as of 03:03, 30 April 2005
| Author: sunjammer (talk, contrib) |
Description
This function searches for a substring on a string, and returns itself plus the remaining of the string. Doesn't work with Unicode.
The Function
; StrStr ; input, top of stack = string to search for ; top of stack-1 = string to search in ; output, top of stack (replaces with the portion of the string remaining) ; modifies no other variables. ; ; Usage: ; Push "this is a long ass string" ; Push "ass" ; Call StrStr ; Pop $R0 ; ($R0 at this point is "ass string") Function StrStr Exch $R1 ; st=haystack,old$R1, $R1=needle Exch ; st=old$R1,haystack Exch $R2 ; st=old$R1,old$R2, $R2=haystack Push $R3 Push $R4 Push $R5 StrLen $R3 $R1 StrCpy $R4 0 ; $R1=needle ; $R2=haystack ; $R3=len(needle) ; $R4=cnt ; $R5=tmp loop: StrCpy $R5 $R2 $R3 $R4 StrCmp $R5 $R1 done StrCmp $R5 "" done IntOp $R4 $R4 + 1 Goto loop done: StrCpy $R1 $R2 "" $R4 Pop $R5 Pop $R4 Pop $R3 Pop $R2 Exch $R1 FunctionEnd
