jellyfin/windows/helpers/StrSlash.nsh

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; Adapted from: https://nsis.sourceforge.io/Another_String_Replace_(and_Slash/BackSlash_Converter) (2019-08-31)
!macro _StrSlashConstructor out in
Push "${in}"
Push "\"
Call StrSlash
Pop ${out}
!macroend
!define StrSlash '!insertmacro "_StrSlashConstructor"'
; Push $filenamestring (e.g. 'c:\this\and\that\filename.htm')
; Push "\"
; Call StrSlash
; Pop $R0
; ;Now $R0 contains 'c:/this/and/that/filename.htm'
Function StrSlash
Exch $R3 ; $R3 = needle ("\" or "/")
Exch
Exch $R1 ; $R1 = String to replacement in (haystack)
Push $R2 ; Replaced haystack
Push $R4 ; $R4 = not $R3 ("/" or "\")
Push $R6
Push $R7 ; Scratch reg
StrCpy $R2 ""
StrLen $R6 $R1
StrCpy $R4 "\"
StrCmp $R3 "/" loop
StrCpy $R4 "/"
loop:
StrCpy $R7 $R1 1
StrCpy $R1 $R1 $R6 1
StrCmp $R7 $R3 found
StrCpy $R2 "$R2$R7"
StrCmp $R1 "" done loop
found:
StrCpy $R2 "$R2$R4"
StrCmp $R1 "" done loop
done:
StrCpy $R3 $R2
Pop $R7
Pop $R6
Pop $R4
Pop $R2
Pop $R1
Exch $R3
FunctionEnd