ZX Spectrum tape file: Go parsing library

// Code generated by kaitai-struct-compiler from a .ksy source file. DO NOT EDIT.

import (
	"github.com/kaitai-io/kaitai_struct_go_runtime/kaitai"
	"bytes"
)


/**
 * TAP files are used by emulators of ZX Spectrum computer (released in
 * 1982 by Sinclair Research). TAP file stores blocks of data as if
 * they are written to magnetic tape, which was used as primary media
 * for ZX Spectrum. Contents of this file can be viewed as a very
 * simple linear filesystem, storing named files with some basic
 * metainformation prepended as a header.
 * @see <a href="https://sinclair.wiki.zxnet.co.uk/wiki/TAP_format">Source</a>
 */

type ZxSpectrumTap_FlagEnum int
const (
	ZxSpectrumTap_FlagEnum__Header ZxSpectrumTap_FlagEnum = 0
	ZxSpectrumTap_FlagEnum__Data ZxSpectrumTap_FlagEnum = 255
)
var values_ZxSpectrumTap_FlagEnum = map[ZxSpectrumTap_FlagEnum]struct{}{0: {}, 255: {}}
func (v ZxSpectrumTap_FlagEnum) isDefined() bool {
	_, ok := values_ZxSpectrumTap_FlagEnum[v]
	return ok
}

type ZxSpectrumTap_HeaderTypeEnum int
const (
	ZxSpectrumTap_HeaderTypeEnum__Program ZxSpectrumTap_HeaderTypeEnum = 0
	ZxSpectrumTap_HeaderTypeEnum__NumArray ZxSpectrumTap_HeaderTypeEnum = 1
	ZxSpectrumTap_HeaderTypeEnum__CharArray ZxSpectrumTap_HeaderTypeEnum = 2
	ZxSpectrumTap_HeaderTypeEnum__Bytes ZxSpectrumTap_HeaderTypeEnum = 3
)
var values_ZxSpectrumTap_HeaderTypeEnum = map[ZxSpectrumTap_HeaderTypeEnum]struct{}{0: {}, 1: {}, 2: {}, 3: {}}
func (v ZxSpectrumTap_HeaderTypeEnum) isDefined() bool {
	_, ok := values_ZxSpectrumTap_HeaderTypeEnum[v]
	return ok
}
type ZxSpectrumTap struct {
	Blocks []*ZxSpectrumTap_Block
	_io *kaitai.Stream
	_root *ZxSpectrumTap
	_parent kaitai.Struct
}
func NewZxSpectrumTap() *ZxSpectrumTap {
	return &ZxSpectrumTap{
	}
}

func (this ZxSpectrumTap) IO_() *kaitai.Stream {
	return this._io
}

func (this *ZxSpectrumTap) Read(io *kaitai.Stream, parent kaitai.Struct, root *ZxSpectrumTap) (err error) {
	this._io = io
	this._parent = parent
	this._root = root

	for i := 0;; i++ {
		tmp1, err := this._io.EOF()
		if err != nil {
			return err
		}
		if tmp1 {
			break
		}
		tmp2 := NewZxSpectrumTap_Block()
		err = tmp2.Read(this._io, this, this._root)
		if err != nil {
			return err
		}
		this.Blocks = append(this.Blocks, tmp2)
	}
	return err
}
type ZxSpectrumTap_ArrayParams struct {
	Reserved uint8
	VarName uint8
	Reserved1 []byte
	_io *kaitai.Stream
	_root *ZxSpectrumTap
	_parent *ZxSpectrumTap_Header
}
func NewZxSpectrumTap_ArrayParams() *ZxSpectrumTap_ArrayParams {
	return &ZxSpectrumTap_ArrayParams{
	}
}

func (this ZxSpectrumTap_ArrayParams) IO_() *kaitai.Stream {
	return this._io
}

func (this *ZxSpectrumTap_ArrayParams) Read(io *kaitai.Stream, parent *ZxSpectrumTap_Header, root *ZxSpectrumTap) (err error) {
	this._io = io
	this._parent = parent
	this._root = root

	tmp3, err := this._io.ReadU1()
	if err != nil {
		return err
	}
	this.Reserved = tmp3
	tmp4, err := this._io.ReadU1()
	if err != nil {
		return err
	}
	this.VarName = tmp4
	tmp5, err := this._io.ReadBytes(int(2))
	if err != nil {
		return err
	}
	tmp5 = tmp5
	this.Reserved1 = tmp5
	if !(bytes.Equal(this.Reserved1, []uint8{0, 128})) {
		return kaitai.NewValidationNotEqualError([]uint8{0, 128}, this.Reserved1, this._io, "/types/array_params/seq/2")
	}
	return err
}

/**
 * Variable name (1..26 meaning A$..Z$ +192)
 */
type ZxSpectrumTap_Block struct {
	LenBlock uint16
	Flag ZxSpectrumTap_FlagEnum
	Header *ZxSpectrumTap_Header
	Data []byte
	HeaderlessData []byte
	_io *kaitai.Stream
	_root *ZxSpectrumTap
	_parent *ZxSpectrumTap
}
func NewZxSpectrumTap_Block() *ZxSpectrumTap_Block {
	return &ZxSpectrumTap_Block{
	}
}

func (this ZxSpectrumTap_Block) IO_() *kaitai.Stream {
	return this._io
}

func (this *ZxSpectrumTap_Block) Read(io *kaitai.Stream, parent *ZxSpectrumTap, root *ZxSpectrumTap) (err error) {
	this._io = io
	this._parent = parent
	this._root = root

	tmp6, err := this._io.ReadU2le()
	if err != nil {
		return err
	}
	this.LenBlock = uint16(tmp6)
	tmp7, err := this._io.ReadU1()
	if err != nil {
		return err
	}
	this.Flag = ZxSpectrumTap_FlagEnum(tmp7)
	if ( ((this.LenBlock == 19) && (this.Flag == ZxSpectrumTap_FlagEnum__Header)) ) {
		tmp8 := NewZxSpectrumTap_Header()
		err = tmp8.Read(this._io, this, this._root)
		if err != nil {
			return err
		}
		this.Header = tmp8
	}
	if (this.LenBlock == 19) {
		tmp9, err := this._io.ReadBytes(int(this.Header.LenData + 4))
		if err != nil {
			return err
		}
		tmp9 = tmp9
		this.Data = tmp9
	}
	if (this.Flag == ZxSpectrumTap_FlagEnum__Data) {
		tmp10, err := this._io.ReadBytes(int(this.LenBlock - 1))
		if err != nil {
			return err
		}
		tmp10 = tmp10
		this.HeaderlessData = tmp10
	}
	return err
}
type ZxSpectrumTap_BytesParams struct {
	StartAddress uint16
	Reserved []byte
	_io *kaitai.Stream
	_root *ZxSpectrumTap
	_parent *ZxSpectrumTap_Header
}
func NewZxSpectrumTap_BytesParams() *ZxSpectrumTap_BytesParams {
	return &ZxSpectrumTap_BytesParams{
	}
}

func (this ZxSpectrumTap_BytesParams) IO_() *kaitai.Stream {
	return this._io
}

func (this *ZxSpectrumTap_BytesParams) Read(io *kaitai.Stream, parent *ZxSpectrumTap_Header, root *ZxSpectrumTap) (err error) {
	this._io = io
	this._parent = parent
	this._root = root

	tmp11, err := this._io.ReadU2le()
	if err != nil {
		return err
	}
	this.StartAddress = uint16(tmp11)
	tmp12, err := this._io.ReadBytes(int(2))
	if err != nil {
		return err
	}
	tmp12 = tmp12
	this.Reserved = tmp12
	return err
}
type ZxSpectrumTap_Header struct {
	HeaderType ZxSpectrumTap_HeaderTypeEnum
	Filename []byte
	LenData uint16
	Params kaitai.Struct
	Checksum uint8
	_io *kaitai.Stream
	_root *ZxSpectrumTap
	_parent *ZxSpectrumTap_Block
}
func NewZxSpectrumTap_Header() *ZxSpectrumTap_Header {
	return &ZxSpectrumTap_Header{
	}
}

func (this ZxSpectrumTap_Header) IO_() *kaitai.Stream {
	return this._io
}

func (this *ZxSpectrumTap_Header) Read(io *kaitai.Stream, parent *ZxSpectrumTap_Block, root *ZxSpectrumTap) (err error) {
	this._io = io
	this._parent = parent
	this._root = root

	tmp13, err := this._io.ReadU1()
	if err != nil {
		return err
	}
	this.HeaderType = ZxSpectrumTap_HeaderTypeEnum(tmp13)
	tmp14, err := this._io.ReadBytes(int(10))
	if err != nil {
		return err
	}
	tmp14 = kaitai.BytesStripRight(tmp14, 32)
	this.Filename = tmp14
	tmp15, err := this._io.ReadU2le()
	if err != nil {
		return err
	}
	this.LenData = uint16(tmp15)
	switch (this.HeaderType) {
	case ZxSpectrumTap_HeaderTypeEnum__Bytes:
		tmp16 := NewZxSpectrumTap_BytesParams()
		err = tmp16.Read(this._io, this, this._root)
		if err != nil {
			return err
		}
		this.Params = tmp16
	case ZxSpectrumTap_HeaderTypeEnum__CharArray:
		tmp17 := NewZxSpectrumTap_ArrayParams()
		err = tmp17.Read(this._io, this, this._root)
		if err != nil {
			return err
		}
		this.Params = tmp17
	case ZxSpectrumTap_HeaderTypeEnum__NumArray:
		tmp18 := NewZxSpectrumTap_ArrayParams()
		err = tmp18.Read(this._io, this, this._root)
		if err != nil {
			return err
		}
		this.Params = tmp18
	case ZxSpectrumTap_HeaderTypeEnum__Program:
		tmp19 := NewZxSpectrumTap_ProgramParams()
		err = tmp19.Read(this._io, this, this._root)
		if err != nil {
			return err
		}
		this.Params = tmp19
	}
	tmp20, err := this._io.ReadU1()
	if err != nil {
		return err
	}
	this.Checksum = tmp20
	return err
}

/**
 * Bitwise XOR of all bytes including the flag byte
 */
type ZxSpectrumTap_ProgramParams struct {
	AutostartLine uint16
	LenProgram uint16
	_io *kaitai.Stream
	_root *ZxSpectrumTap
	_parent *ZxSpectrumTap_Header
}
func NewZxSpectrumTap_ProgramParams() *ZxSpectrumTap_ProgramParams {
	return &ZxSpectrumTap_ProgramParams{
	}
}

func (this ZxSpectrumTap_ProgramParams) IO_() *kaitai.Stream {
	return this._io
}

func (this *ZxSpectrumTap_ProgramParams) Read(io *kaitai.Stream, parent *ZxSpectrumTap_Header, root *ZxSpectrumTap) (err error) {
	this._io = io
	this._parent = parent
	this._root = root

	tmp21, err := this._io.ReadU2le()
	if err != nil {
		return err
	}
	this.AutostartLine = uint16(tmp21)
	tmp22, err := this._io.ReadU2le()
	if err != nil {
		return err
	}
	this.LenProgram = uint16(tmp22)
	return err
}