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; StrContains | ||
; This function does a case sensitive searches for an occurrence of a substring in a string. | ||
; It returns the substring if it is found. | ||
; Otherwise it returns null(""). | ||
; Written by kenglish_hi | ||
; Adapted from StrReplace written by dandaman32 | ||
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Var STR_HAYSTACK | ||
Var STR_NEEDLE | ||
Var STR_CONTAINS_VAR_1 | ||
Var STR_CONTAINS_VAR_2 | ||
Var STR_CONTAINS_VAR_3 | ||
Var STR_CONTAINS_VAR_4 | ||
Var STR_RETURN_VAR | ||
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Function StrContains | ||
Exch $STR_NEEDLE | ||
Exch 1 | ||
Exch $STR_HAYSTACK | ||
; Uncomment to debug | ||
;MessageBox MB_OK 'STR_NEEDLE = $STR_NEEDLE STR_HAYSTACK = $STR_HAYSTACK ' | ||
StrCpy $STR_RETURN_VAR "" | ||
StrCpy $STR_CONTAINS_VAR_1 -1 | ||
StrLen $STR_CONTAINS_VAR_2 $STR_NEEDLE | ||
StrLen $STR_CONTAINS_VAR_4 $STR_HAYSTACK | ||
loop: | ||
IntOp $STR_CONTAINS_VAR_1 $STR_CONTAINS_VAR_1 + 1 | ||
StrCpy $STR_CONTAINS_VAR_3 $STR_HAYSTACK $STR_CONTAINS_VAR_2 $STR_CONTAINS_VAR_1 | ||
StrCmp $STR_CONTAINS_VAR_3 $STR_NEEDLE found | ||
StrCmp $STR_CONTAINS_VAR_1 $STR_CONTAINS_VAR_4 done | ||
Goto loop | ||
found: | ||
StrCpy $STR_RETURN_VAR $STR_NEEDLE | ||
Goto done | ||
done: | ||
Pop $STR_NEEDLE ;Prevent "invalid opcode" errors and keep the | ||
Exch $STR_RETURN_VAR | ||
FunctionEnd | ||
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!macro _StrContainsConstructor OUT NEEDLE HAYSTACK | ||
Push "${HAYSTACK}" | ||
Push "${NEEDLE}" | ||
Call StrContains | ||
Pop "${OUT}" | ||
!macroend | ||
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!define StrContains '!insertmacro "_StrContainsConstructor"' |
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