Function EditToggleLineComments

src/Edit.c:3036–3128

============================================================================= EditToggleLineComments()

//  EditToggleLineComments()
//
void EditToggleLineComments ( HWND hwnd, LPCWSTR pwszComment, BOOL bInsertAtStart )
{
    char  mszComment[256 * 3] = "";
    int   cchComment;
    int   mbcp;
    int   iAction = 0;
    int iSelStart = ( int ) SendMessage ( hwnd, SCI_GETSELECTIONSTART, 0, 0 );
    int iSelEnd   = ( int ) SendMessage ( hwnd, SCI_GETSELECTIONEND, 0, 0 );
    int iCurPos   = ( int ) SendMessage ( hwnd, SCI_GETCURRENTPOS, 0, 0 );
    if ( SendMessage ( hwnd, SCI_GETCODEPAGE, 0, 0 ) == SC_CP_UTF8 ) {
        mbcp = CP_UTF8;
    } else {
        mbcp = CP_ACP;
    }
    if ( lstrlen ( pwszComment ) ) {
        WideCharToMultiByte ( mbcp, 0, pwszComment, -1, mszComment, COUNTOF ( mszComment ), NULL, NULL );
    }
    cchComment = lstrlenA ( mszComment );
    if ( SC_SEL_RECTANGLE != SendMessage ( hwnd, SCI_GETSELECTIONMODE, 0, 0 ) && cchComment ) {
        int iLine;
        int iCommentCol = 0;
        int iLineStart = ( int ) SendMessage ( hwnd, SCI_LINEFROMPOSITION, ( WPARAM ) iSelStart, 0 );
        int iLineEnd   = ( int ) SendMessage ( hwnd, SCI_LINEFROMPOSITION, ( WPARAM ) iSelEnd, 0 );
        if ( iSelEnd <= SendMessage ( hwnd, SCI_POSITIONFROMLINE, ( WPARAM ) iLineEnd, 0 ) ) {
            if ( iLineEnd - iLineStart >= 1 ) {
                iLineEnd--;
            }
        }
        if ( !bInsertAtStart ) {
            iCommentCol = 1024;
            for ( iLine = iLineStart; iLine <= iLineEnd; iLine++ ) {
                int iLineEndPos = ( int ) SendMessage ( hwnd, SCI_GETLINEENDPOSITION, ( WPARAM ) iLine, 0 );
                int iLineIndentPos = ( int ) SendMessage ( hwnd, SCI_GETLINEINDENTPOSITION, ( WPARAM ) iLine, 0 );
                if ( iLineIndentPos != iLineEndPos ) {
                    int iIndentColumn = ( int ) SendMessage ( hwnd, SCI_GETCOLUMN, ( WPARAM ) iLineIndentPos, 0 );
                    iCommentCol = min ( iCommentCol, iIndentColumn );
                }
            }
        }
        SendMessage ( hwnd, SCI_BEGINUNDOACTION, 0, 0 );
        for ( iLine = iLineStart; iLine <= iLineEnd; iLine++ ) {
            int iCommentPos;
            int iIndentPos = ( int ) SendMessage ( hwnd, SCI_GETLINEINDENTPOSITION, ( WPARAM ) iLine, 0 );
            char tchBuf[32];
            struct TextRange tr;
            if ( iIndentPos == SendMessage ( hwnd, SCI_GETLINEENDPOSITION, ( WPARAM ) iLine, 0 ) ) {
                continue;
            }
            tr.chrg.cpMin = iIndentPos;
            tr.chrg.cpMax = tr.chrg.cpMin + min ( 31, cchComment );
            tr.lpstrText = tchBuf;
            SendMessage ( hwnd, SCI_GETTEXTRANGE, 0, ( LPARAM ) &tr );
            if ( StrCmpNIA ( tchBuf, mszComment, cchComment ) == 0 ) {
                switch ( iAction ) {
                    case 0:
                        iAction = 2;
                    case 2:
                        SendMessage ( hwnd, SCI_SETTARGETSTART, ( WPARAM ) iIndentPos, 0 );