internal

package
v0.0.0-...-6ad6dc7 Latest Latest
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 Go to latest Published: Jul 17, 2024 License: MIT Imports: 7 Imported by: 0

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Index

Constants

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const BrokenCode = "brokenCode"
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const FormatVersion = 0x0000_00002
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const MappingConditionArg1Const = 0b0000_1000
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const MappingConditionArg1RNG = 0b0000_0100
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const MappingConditionArg1Var = 0b0000_0000
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const MappingConditionArg2Const = 0b0000_1000
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const MappingConditionArg2RNG = 0b0000_0100
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const MappingConditionArg2Var = 0b0000_0000
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const MappingConditionOpDiff = 0b0001_0000
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const MappingConditionOpEqual = 0b0000_0000

these must definitely not be exposed to the public

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const MappingConditionOpLE = 0b0011_0000
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const MappingConditionOpLT = 0b0010_0000
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const MaxFastMappingTableCodePoints = 1000
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const MaxFastMappingTableCodePointsStr = "1000"
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const MaxFastMappingTablesSize = (32 << 10)

some of these could be exposed to the public

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const MaxFontDataSize = (32 << 20) // check both total file size and after uncompressing without signature
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const MaxGlyphs = 56789
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const MaxGlyphsPerCodePoint = 64
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const MinEntropyID = 0.26
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const MinGlyphReRuleFmtLen = 11
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const MinUtf8ReRuleFmtLen = 13 // TODO: I don't know, actually

Variables

This section is empty.

Functions

func AppendByteDigits 

func AppendByteDigits(value byte, str []byte) []byte

func AppendShortString 

func AppendShortString(buffer []byte, str string) []byte

func AppendString 

func AppendString(buffer []byte, str string) []byte

func AppendUint16LE 

func AppendUint16LE(buffer []byte, value uint16) []byte

func AppendUint24LE 

func AppendUint24LE(buffer []byte, value uint32) []byte

func AppendUint32LE 

func AppendUint32LE(buffer []byte, value uint32) []byte

func AppendUint64LE 

func AppendUint64LE(buffer []byte, value uint64) []byte

func AppendUint8 

func AppendUint8(buffer []byte, value byte) []byte

func BadBinarySearch 

func BadBinarySearch[T cmp.Ordered](slice []T, target T) (int, bool)

Like slices.BinarySearch, but without NaN nor overflow support. And better variable names, seriously...

func BasicOrderedNonRepeatInsert 

func BasicOrderedNonRepeatInsert[T cmp.Ordered](buffer []T, element T) []T

func BoolErrCheck 

func BoolErrCheck(value uint8) error

func BoolToUint8 

func BoolToUint8(truthy bool) uint8

func CryptoRandUint64 

func CryptoRandUint64() (uint64, error)

func DecodeDate 

func DecodeDate(buffer []byte) (uint16, uint8, uint8)

func DecodeUint16LE 

func DecodeUint16LE(buffer []byte) uint16

func DecodeUint24LE 

func DecodeUint24LE(buffer []byte) uint32

func DecodeUint32LE 

func DecodeUint32LE(buffer []byte) uint32

func DecodeUint64LE 

func DecodeUint64LE(buffer []byte) uint64

func DeleteElementAt 

func DeleteElementAt[T any](buffer []T, index int) []T

func EncodeUint16LE 

func EncodeUint16LE(buffer []byte, value uint16)

func EncodeUint24LE 

func EncodeUint24LE(buffer []byte, value uint32)

func EncodeUint32LE 

func EncodeUint32LE(buffer []byte, value uint32)

func GrowSliceByN 

func GrowSliceByN[T any](buffer []T, increase int) []T

func GrowSliceByOne 

func GrowSliceByOne[T any](buffer []T) []T

This method is only useful when T is a type that's either very large or it contains slices already allocated that we want to preserve and reuse. In those cases, GrowSliceByOne might help reduce GC and new allocations (it can also unnecessarily hog memory when misused).

func LazyEntropyUint64 

func LazyEntropyUint64(value uint64) float64

Values <0.3 are fairly low entropy. anything <0.2 tends to be visibly low entropy

func SetSliceSize 

func SetSliceSize[T any](buffer []T, size int) []T

The contents might be cleared.

func ValidateBasicName 

func ValidateBasicName(name string) error

Types

type BoolList 

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

func NewBoolList 

func NewBoolList(size int) BoolList

func (*BoolList) Get 

func (self *BoolList) Get(i int) bool

func (*BoolList) GetU8 

func (self *BoolList) GetU8(i uint8) bool

func (*BoolList) GetWordAndBitMaskU8 

func (self *BoolList) GetWordAndBitMaskU8(i uint8) (uint8, uint8)

func (*BoolList) IsSet 

func (self *BoolList) IsSet(i int) bool

func (*BoolList) IsSetU8 

func (self *BoolList) IsSetU8(i uint8) bool

func (*BoolList) IsUnset 

func (self *BoolList) IsUnset(i int) bool

func (*BoolList) IsUnsetU8 

func (self *BoolList) IsUnsetU8(i uint8) bool

func (*BoolList) Push 

func (self *BoolList) Push(value bool)

func (*BoolList) RawGetU8 

func (self *BoolList) RawGetU8(word, bitMask uint8) bool

func (*BoolList) Set 

func (self *BoolList) Set(i int, value bool)

func (*BoolList) SetAllFalse 

func (self *BoolList) SetAllFalse()

func (*BoolList) SetAllTrue 

func (self *BoolList) SetAllTrue()

func (*BoolList) SetU8 

func (self *BoolList) SetU8(i uint8, value bool)

type CircularBufferU16 

type CircularBufferU16[T any] struct {
	// contains filtered or unexported fields
}

func (*CircularBufferU16[T]) Capacity 

func (self *CircularBufferU16[T]) Capacity() uint16

func (*CircularBufferU16[T]) Clear 

func (self *CircularBufferU16[T]) Clear()

func (*CircularBufferU16[T]) ConfirmPeeks 

func (self *CircularBufferU16[T]) ConfirmPeeks()

func (*CircularBufferU16[T]) DiscardPeeks 

func (self *CircularBufferU16[T]) DiscardPeeks()

func (*CircularBufferU16[T]) Head 

func (self *CircularBufferU16[T]) Head() T

func (*CircularBufferU16[T]) IsEmpty 

func (self *CircularBufferU16[T]) IsEmpty() bool

func (*CircularBufferU16[T]) PeekAhead 

func (self *CircularBufferU16[T]) PeekAhead() (T, bool)

func (*CircularBufferU16[T]) PopHead 

func (self *CircularBufferU16[T]) PopHead() T

func (*CircularBufferU16[T]) PopTail 

func (self *CircularBufferU16[T]) PopTail() T

func (*CircularBufferU16[T]) Push 

func (self *CircularBufferU16[T]) Push(element T)

This method panics if we go above the current capacity.

func (*CircularBufferU16[T]) SetCapacity 

func (self *CircularBufferU16[T]) SetCapacity(capacity uint16) bool

Returns false if capacity < CircularBufferU16.Len().

func (*CircularBufferU16[T]) SetMinCapacity 

func (self *CircularBufferU16[T]) SetMinCapacity(capacity uint16) bool

func (*CircularBufferU16[T]) Size 

func (self *CircularBufferU16[T]) Size() uint16

func (*CircularBufferU16[T]) Tail 

func (self *CircularBufferU16[T]) Tail() T

type Font 

type Font struct {
	Data []byte // already ungzipped, starting from HEADER (signature is ignored)

	// offsets to specific points at which critical data appears
	// (offsetToHeader is always zero)
	OffsetToMetrics uint32
	// OffsetToColorSections uint32
	// OffsetToColorSectionNames uint32
	OffsetToDyes     uint32
	OffsetToPalettes uint32

	OffsetToGlyphNames         uint32
	OffsetToGlyphMasks         uint32
	OffsetToWords              uint32
	OffsetToSettingNames       uint32
	OffsetToSettingDefinitions uint32
	OffsetToMappingSwitches    uint32
	OffsetToMapping            uint32
	OffsetToRewriteConditions  uint32
	OffsetToRewriteUtf8Sets    uint32
	OffsetToRewriteGlyphSets   uint32
	OffsetToUtf8Rewrites       uint32
	OffsetToGlyphRewrites      uint32
	OffsetToHorzKernings       uint32
	OffsetToVertKernings       uint32
}

type ParsingBuffer 

type ParsingBuffer struct {
	TempBuff []byte // size 1024, for temporary reads immediately copied to 'bytes'

	FileType string

	Bytes []byte
	Index int // index of processed data within 'bytes'. unprocessed data == len(bytes) - index
	// contains filtered or unexported fields
}

func (*ParsingBuffer) AdvanceBytes 

func (self *ParsingBuffer) AdvanceBytes(n int) error

func (*ParsingBuffer) AdvanceShortSlice 

func (self *ParsingBuffer) AdvanceShortSlice() error

func (*ParsingBuffer) EnsureEOF 

func (self *ParsingBuffer) EnsureEOF() error

func (*ParsingBuffer) InitBuffers 

func (self *ParsingBuffer) InitBuffers()

func (*ParsingBuffer) InitGzipReader 

func (self *ParsingBuffer) InitGzipReader(reader io.Reader) error

func (*ParsingBuffer) NewError 

func (self *ParsingBuffer) NewError(details string) error

func (*ParsingBuffer) ReadBool 

func (self *ParsingBuffer) ReadBool() (bool, error)

Returns bool value, new index, and an error if format was incorrect.

func (*ParsingBuffer) ReadInt32 

func (self *ParsingBuffer) ReadInt32() (int32, error)

func (*ParsingBuffer) ReadInt8 

func (self *ParsingBuffer) ReadInt8() (int8, error)

func (*ParsingBuffer) ReadShortStr 

func (self *ParsingBuffer) ReadShortStr() (string, error)

func (*ParsingBuffer) ReadString 

func (self *ParsingBuffer) ReadString() (string, error)

func (*ParsingBuffer) ReadUint16 

func (self *ParsingBuffer) ReadUint16() (uint16, error)

func (*ParsingBuffer) ReadUint24 

func (self *ParsingBuffer) ReadUint24() (uint32, error)

func (*ParsingBuffer) ReadUint32 

func (self *ParsingBuffer) ReadUint32() (uint32, error)

func (*ParsingBuffer) ReadUint64 

func (self *ParsingBuffer) ReadUint64() (uint64, error)

func (*ParsingBuffer) ReadUint8 

func (self *ParsingBuffer) ReadUint8() (uint8, error)

func (*ParsingBuffer) ValidateBasicName 

func (self *ParsingBuffer) ValidateBasicName(name string) error

func (*ParsingBuffer) ValidateBasicSpacedName 

func (self *ParsingBuffer) ValidateBasicSpacedName(name string) error

Repeated spaces and hyphens and stuff are ok on basic names.

type RawBlock 

type RawBlock struct{ Data []uint8 }

Internal base type for [ggfnt.GlyphRewriteRule], [ggfnt.Utf8RewriteRule], [ggfnt.GlyphRewriteSet], [ggfnt.Utf8RewriteSet], etc.

type SingleInstancePool 

type SingleInstancePool[T any] struct {
	// contains filtered or unexported fields
}

Kind of a single-element pool. Basically, it instances one element and associates it to a lock. If we request more elements of that type, we are creating new ones instead. This means that non-concurrent operation can reuse an element, and concurrent access is not expected nor desirable, but not technically incorrect (only potentially inefficient).

func (*SingleInstancePool[T]) Release 

func (self *SingleInstancePool[T]) Release(instance *T)

func (*SingleInstancePool[T]) Retrieve 

func (self *SingleInstancePool[T]) Retrieve() *T

Source Files

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Directories

Path Synopsis
glyphrule
utf8rule

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