Custom.nsh for CppCheck Portable (by 3D1T0R)

${SegmentFile}

!macro _PreExecPrimary_RegReplaceDriveLetter

        # Code courtesy of Bart.S, OpenPlatform, and 3D1T0R
    ${Registry::Read} "$RegKey" "$RegValue" $R0 $R1
    ${If} $R0 != ""
        ; Unfortunately the Registry::Read function puts a NewLine ($\n) between every character, this hack removes those while preserving NewLine ($\n) Characters which were supposed to be present
            ; If we could fix Registry::Read we could remove the next 3 lines
        ${WordReplace} $R0 "$\n$\n$\n" "/NEWLINE\" "+" $R2
        ${WordReplace} $R2 "$\n" "" "+" $R2
        ${WordReplace} $R2 "/NEWLINE\" "$\n" "+" $R2
        ${DebugMsg} "Reading from Registry:$\nRegistry Key:$\n$RegKey$\nRegistry Value:$\n$RegValue$\nContents:$\n$R2$\nAnd is Type:$\n$R1"
        ${WordReplace} $R2 "$LastDrive" "$Drive" "+" $R3
        ${DebugMsg} "Replacing the LastDrive letter with the current Drive letter:$\nString begins as:$R2$\nString to find:$\n$LastDrive$\nString to replace with:$\n$Drive$\nResultant String:$\n$R3"
        ${registry::Write} "$RegKey" "$RegValue" $R3 $R1 $R4
        ${DebugMsg} "Writing to Registry:$\nRegistry Key:$RegKey$\nRegistry Value:$\n$RegValue$\nContents:$\n$R5$\nAnd is Type:$\n$R1$\n$\n$R3$\nDid it work (0=Yes -1=Error):$\n$R4"
    ${Else}
        ${DebugMsg} "$RegValue in $RegKey is empty."
    ${EndIf}
!macroend

Var Drive
Var RegKey
Var RegValue

${SegmentPreExecPrimary}

    ReadEnvStr $LastDrive "PAL:LastDrive"
    ReadEnvStr $Drive "PAL:Drive"

    StrCpy $RegKey "HKEY_CURRENT_USER\Software\Cppcheck\Cppcheck-GUI"
    StrCpy $RegValue "Application paths"
    !insertmacro _PreExecPrimary_RegReplaceDriveLetter

    StrCpy $RegValue "Check path"
    !insertmacro _PreExecPrimary_RegReplaceDriveLetter

    StrCpy $RegValue "Global include paths"
    !insertmacro _PreExecPrimary_RegReplaceDriveLetter
!macroend