XlsxAddMode = enum
  Integer, TimeInfo

XlsxCell = tuple[state: bool, value: string]

XlsxIOSkip = enum
  None = 0, EmptyRows = 1, EmptyCells = 2, AllEmpty = 3, ExtraCells = 4,
  HiddenRows = 8

XlsxIOVersion = object
  major, minor, micro: int

proc `$`(version: XlsxIOVersion): string {....raises: [], tags: [].}

proc hasSheet(handle: XlsxioReader; name: string): bool {....raises: [IOError],
    tags: [].}

proc len(handle: XlsxioReader): int {....raises: [IOError], tags: [].}

proc readClose(handle: XlsxioReader) {....raises: [], tags: [].}

proc readGetVersion(): XlsxIOVersion {....raises: [], tags: [].}

proc readOpen(filename: string): XlsxioReader {....raises: [IOError], tags: [].}

proc readOpenFilehandle(filehandle: File): XlsxioReader {....raises: [IOError],
    tags: [].}

proc readOpenMemory(data: var string; datalen: int; freedata: bool = true): XlsxioReader {.
    ...raises: [IOError], tags: [].}

proc readSheetFlags(handle: XlsxioReaderSheet): XlsxIOSkip {....raises: [],
    tags: [].}

proc readSheetIntoArray(handle: XlsxioReaderSheet): seq[seq[string]] {.
    ...raises: [], tags: [].}

proc readSheetLastColumnIndex(handle: XlsxioReaderSheet): int {....raises: [],
    tags: [].}

proc readSheetLastRowIndex(handle: XlsxioReaderSheet): int {....raises: [],
    tags: [].}

proc readSheetlistOpen(handle: XlsxioReader): XlsxioReaderSheetList {.
    ...raises: [IOError], tags: [].}

proc readSheetNextCell(handle: XlsxioReaderSheet): XlsxCell {....raises: [],
    tags: [].}

proc readSheetNextCellEpoch(handle: XlsxioReaderSheet; cellint: var int64): int {.
    ...raises: [], tags: [].}

proc readSheetNextCellFloat(handle: XlsxioReaderSheet; cellfloat: var float64): int {.
    ...raises: [], tags: [].}

proc readSheetNextCellInt(handle: XlsxioReaderSheet; cellint: var int64): int {.
    ...raises: [], tags: [].}

proc readSheetNextCellString(handle: XlsxioReaderSheet; cellstring: var string): int {.
    ...raises: [], tags: [].}

proc readSheetNextCellTime(handle: XlsxioReaderSheet; celltime: var Time): int {.
    ...raises: [], tags: [].}

proc readSheetNextRow(handle: XlsxioReaderSheet): int {....raises: [], tags: [].}

proc readSheetOpen(handle: XlsxioReader; sheetindex: int;
                   skip: XlsxIOSkip = None): XlsxioReaderSheet {.
    ...raises: [IOError, ValueError], tags: [].}

proc readSheetOpen(handle: XlsxioReader; sheetname: string;
                   skip: XlsxIOSkip = None): XlsxioReaderSheet {.
    ...raises: [IOError], tags: [].}

proc sheets(handle: XlsxioReader): seq[string] {....raises: [IOError], tags: [].}

proc writeAddCell(handle: XlsxioWriter; value: float64) {....raises: [], tags: [].}

proc writeAddCell(handle: XlsxioWriter; value: int64;
                  mode: XlsxAddMode = Integer) {....raises: [], tags: [].}

proc writeAddCell(handle: XlsxioWriter; value: string) {....raises: [], tags: [].}

proc writeAddCell(handle: XlsxioWriter; value: Time) {....raises: [], tags: [].}

proc writeAddCellEpoch(handle: XlsxioWriter; value: int64) {....raises: [],
    tags: [].}

proc writeAddCellFloat(handle: XlsxioWriter; value: float64) {....raises: [],
    tags: [].}

proc writeAddCellInt(handle: XlsxioWriter; value: int64) {....raises: [], tags: [].}

proc writeAddCellString(handle: XlsxioWriter; value: string) {....raises: [],
    tags: [].}

proc writeAddCellTime(handle: XlsxioWriter; value: Time) {....raises: [], tags: [].}

proc writeAddColumn(handle: XlsxioWriter; name: string; width: int) {.
    ...raises: [], tags: [].}

proc writeClose(handle: XlsxioWriter) {....raises: [IOError], tags: [].}

proc writeGetVersion(): XlsxIOVersion {....raises: [], tags: [].}

proc writeNextRow(handle: XlsxioWriter) {....raises: [], tags: [].}

proc writeOpen(filename: string; sheetname: string): XlsxioWriter {.
    ...raises: [IOError], tags: [].}

proc writeSetDetectionRows(handle: XlsxioWriter; rows: int) {....raises: [],
    tags: [].}

proc writeSetRowHeight(handle: XlsxioWriter; height: int) {....raises: [], tags: [].}

iterator readSheetRows(handle: XlsxioReaderSheet): seq[string] {....raises: [],
    tags: [].}

iterator readSheetRowsEpoch(handle: XlsxioReaderSheet): seq[float] {....raises: [],
    tags: [].}

iterator readSheetRowsFloat(handle: XlsxioReaderSheet): seq[float] {....raises: [],
    tags: [].}

iterator readSheetRowsInt(handle: XlsxioReaderSheet): seq[int] {....raises: [],
    tags: [].}

iterator readSheetRowsTime(handle: XlsxioReaderSheet): seq[Time] {....raises: [],
    tags: [].}

iterator readSheets(handle: XlsxioReader): string {....raises: [IOError], tags: [].}

iterator readSheets(handle: XlsxioReaderSheetList): string {....raises: [IOError],
    tags: [].}