utils

package
v1.39.0 Latest Latest
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 Go to latest Published: Aug 19, 2026 License: MIT Imports: 8 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func IntToRune 

func IntToRune(i int) rune

IntToRune converts a digit 0 - 9 to the rune '0' - '9'. If the given int is outside of this range 'F' is returned!

func RuneToInt 

func RuneToInt(r rune) int

RuneToInt converts a rune between '0' and '9' to an integer between 0 and 9 If the rune is outside of this range -1 is returned.

Types

type BitArray 

type BitArray struct {
	// contains filtered or unexported fields
}

func NewBitArray 

func NewBitArray(size int) *BitArray

func NewEmptyBitArray 

func NewEmptyBitArray() *BitArray

func (*BitArray) AppendBit 

func (b *BitArray) AppendBit(bit bool)

func (*BitArray) AppendBitArray 

func (b *BitArray) AppendBitArray(other *BitArray)

func (*BitArray) AppendBits 

func (b *BitArray) AppendBits(value int, numBits int) error

func (*BitArray) Clear 

func (b *BitArray) Clear()

func (*BitArray) Flip 

func (b *BitArray) Flip(i int)

func (*BitArray) Get 

func (b *BitArray) Get(i int) bool

func (*BitArray) GetBitArray 

func (b *BitArray) GetBitArray() []uint32

func (*BitArray) GetNextSet 

func (b *BitArray) GetNextSet(from int) int

func (*BitArray) GetNextUnset 

func (b *BitArray) GetNextUnset(from int) int

func (*BitArray) GetSize 

func (b *BitArray) GetSize() int

func (*BitArray) GetSizeInBytes 

func (b *BitArray) GetSizeInBytes() int

func (*BitArray) IsRange 

func (b *BitArray) IsRange(start, end int, value bool) (bool, error)

func (*BitArray) Reverse 

func (b *BitArray) Reverse()

func (*BitArray) Set 

func (b *BitArray) Set(i int)

func (*BitArray) SetBulk 

func (b *BitArray) SetBulk(i int, newBits uint32)

func (*BitArray) SetRange 

func (b *BitArray) SetRange(start, end int) error

func (*BitArray) String 

func (b *BitArray) String() string

func (*BitArray) ToBytes 

func (b *BitArray) ToBytes(bitOffset int, array []byte, offset, numBytes int)

func (*BitArray) Xor 

func (b *BitArray) Xor(other *BitArray) error

type BitList 

type BitList struct {
	// contains filtered or unexported fields
}

BitList is a list that contains bits

func NewBitList 

func NewBitList(capacity int) *BitList

NewBitList returns a new BitList with the given length all bits are initialize with false

func (*BitList) AddBit 

func (bl *BitList) AddBit(bits ...bool)

AddBit appends the given bits to the end of the list

func (*BitList) AddBits 

func (bl *BitList) AddBits(b int, count byte)

AddBits appends the last (LSB) 'count' bits of 'b' the the end of the list

func (*BitList) AddByte 

func (bl *BitList) AddByte(b byte)

AddByte appends all 8 bits of the given byte to the end of the list

func (*BitList) GetBit 

func (bl *BitList) GetBit(index int) bool

GetBit returns the bit at the given index

func (*BitList) GetBytes 

func (bl *BitList) GetBytes() []byte

GetBytes returns all bits of the BitList as a []byte

func (*BitList) IterateBytes 

func (bl *BitList) IterateBytes() <-chan byte

IterateBytes iterates through all bytes contained in the BitList

func (*BitList) Len 

func (bl *BitList) Len() int

Len returns the number of contained bits

func (*BitList) SetBit 

func (bl *BitList) SetBit(index int, value bool)

SetBit sets the bit at the given index to the given value

func (*BitList) ToImageWithBarsRatio 

func (resBits *BitList) ToImageWithBarsRatio(width, height int, widthRatio float64) image.Image

func (*BitList) ToWideNarrowList 

func (resBits *BitList) ToWideNarrowList(wideBarWidth, narrowBarWidth int) *WideNarrowList

Converts BitList to useful representation for barcodes that have narrow / wide bars with variable bar ratio

type BitMatrix 

type BitMatrix struct {
	// contains filtered or unexported fields
}

func NewBitMatrix 

func NewBitMatrix(width, height int) (*BitMatrix, error)

func NewSquareBitMatrix 

func NewSquareBitMatrix(dimension int) (*BitMatrix, error)

func ParseBoolMapToBitMatrix 

func ParseBoolMapToBitMatrix(image [][]bool) (*BitMatrix, error)

func ParseStringToBitMatrix 

func ParseStringToBitMatrix(stringRepresentation, setString, unsetString string) (*BitMatrix, error)

func (*BitMatrix) At 

func (b *BitMatrix) At(x, y int) color.Color

func (*BitMatrix) Bounds 

func (b *BitMatrix) Bounds() image.Rectangle

func (*BitMatrix) Clear 

func (b *BitMatrix) Clear()

func (*BitMatrix) ColorModel 

func (b *BitMatrix) ColorModel() color.Model

func (*BitMatrix) Flip 

func (b *BitMatrix) Flip(x, y int)

func (*BitMatrix) FlipAll 

func (b *BitMatrix) FlipAll()

func (*BitMatrix) Get 

func (b *BitMatrix) Get(x, y int) bool

func (*BitMatrix) GetBottomRightOnBit 

func (b *BitMatrix) GetBottomRightOnBit() []int

func (*BitMatrix) GetEnclosingRectangle 

func (b *BitMatrix) GetEnclosingRectangle() []int

func (*BitMatrix) GetHeight 

func (b *BitMatrix) GetHeight() int

func (*BitMatrix) GetRow 

func (b *BitMatrix) GetRow(y int, row *BitArray) *BitArray

func (*BitMatrix) GetRowSize 

func (b *BitMatrix) GetRowSize() int

func (*BitMatrix) GetTopLeftOnBit 

func (b *BitMatrix) GetTopLeftOnBit() []int

func (*BitMatrix) GetWidth 

func (b *BitMatrix) GetWidth() int

func (*BitMatrix) Rotate90 

func (b *BitMatrix) Rotate90()

func (*BitMatrix) Rotate180 

func (b *BitMatrix) Rotate180()

func (*BitMatrix) Set 

func (b *BitMatrix) Set(x, y int)

func (*BitMatrix) SetRegion 

func (b *BitMatrix) SetRegion(left, top, width, height int) error

func (*BitMatrix) SetRow 

func (b *BitMatrix) SetRow(y int, row *BitArray)

func (*BitMatrix) String 

func (b *BitMatrix) String() string

func (*BitMatrix) ToString 

func (b *BitMatrix) ToString(setString, unsetString string) string

func (*BitMatrix) ToStringWithLineSeparator 

func (b *BitMatrix) ToStringWithLineSeparator(setString, unsetString, lineSeparator string) string

func (*BitMatrix) Unset 

func (b *BitMatrix) Unset(x, y int)

func (*BitMatrix) Xor 

func (b *BitMatrix) Xor(mask *BitMatrix) error

type GFPoly 

type GFPoly struct {
	Coefficients []int
	// contains filtered or unexported fields
}

func NewGFPoly 

func NewGFPoly(field *GaloisField, coefficients []int) *GFPoly

func NewMonominalPoly 

func NewMonominalPoly(field *GaloisField, degree int, coeff int) *GFPoly

func (*GFPoly) AddOrSubstract 

func (gp *GFPoly) AddOrSubstract(other *GFPoly) *GFPoly

func (*GFPoly) Degree 

func (gp *GFPoly) Degree() int

func (*GFPoly) Divide 

func (gp *GFPoly) Divide(other *GFPoly) (quotient *GFPoly, remainder *GFPoly)

func (*GFPoly) GetCoefficient 

func (gp *GFPoly) GetCoefficient(degree int) int

GetCoefficient returns the coefficient of x ^ degree

func (*GFPoly) MultByMonominal 

func (gp *GFPoly) MultByMonominal(degree int, coeff int) *GFPoly

func (*GFPoly) Multiply 

func (gp *GFPoly) Multiply(other *GFPoly) *GFPoly

func (*GFPoly) Zero 

func (gp *GFPoly) Zero() bool

type GaloisField 

type GaloisField struct {
	Size    int
	Base    int
	ALogTbl []int
	LogTbl  []int
}

GaloisField encapsulates galois field arithmetics

func NewGaloisField 

func NewGaloisField(pp, fieldSize, b int) *GaloisField

NewGaloisField creates a new galois field

func (*GaloisField) AddOrSub 

func (gf *GaloisField) AddOrSub(a, b int) int

AddOrSub add or substract two numbers

func (*GaloisField) Divide 

func (gf *GaloisField) Divide(a, b int) int

Divide divides two numbers

func (*GaloisField) Invers 

func (gf *GaloisField) Invers(num int) int

func (*GaloisField) Multiply 

func (gf *GaloisField) Multiply(a, b int) int

Multiply multiplys two numbers

func (*GaloisField) Zero 

func (gf *GaloisField) Zero() *GFPoly

type ReedSolomonEncoder 

type ReedSolomonEncoder struct {
	// contains filtered or unexported fields
}

func NewReedSolomonEncoder 

func NewReedSolomonEncoder(gf *GaloisField) *ReedSolomonEncoder

func (*ReedSolomonEncoder) Encode 

func (rs *ReedSolomonEncoder) Encode(data []int, eccCount int) []int

type WideNarrowList 

type WideNarrowList struct {
	Data [][2]bool
	// contains filtered or unexported fields
}

func (*WideNarrowList) GetBarWidth 

func (list *WideNarrowList) GetBarWidth(idx int) int

func (*WideNarrowList) GetTotalWidth 

func (list *WideNarrowList) GetTotalWidth() int

Source Files

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