tex

package
v0.0.2 Latest Latest
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 Go to latest Published: Aug 27, 2021 License: MIT Imports: 17 Imported by: 2

README

tex

  • 基本扩展
  • 扩展一些数据类型，能适配SQL/JSON
  • 提供基本的二进制读写数据
  • 提供高效的JSON算法和压缩算法
  • 提供位图数据
  • 提供interface到基本数据类型的转化

Documentation

Index

Constants

View Source 
const MinRead = 512

MinRead is the minimum slice size passed to a Read call by Buffer.ReadFrom. As long as the Buffer has at least MinRead bytes beyond what is required to hold the contents of r, ReadFrom will not grow the underlying buffer.

Variables

View Source 
var (
	ErrByteBufferEmpty = errors.New("byte.buffer.empty")
	ErrReadWrongNum    = errors.New("byte.buffer.wrong.num")
	ErrSizeLimit       = errors.New("byte.buffer.size.limit")
)
View Source 
var (
	JSONMarshal   = jsonStd.Marshal
	JSONUnmarshal = jsonStd.Unmarshal
)

标准jsoniter json库 100%兼容

View Source 
var (
	JSONFastMarshal   = jsonFast.Marshal
	JSONFastUnmarshal = jsonFast.Unmarshal

	JSONFastMarshalSnappy   = fastMarshalSnappy
	JSONFastUnmarshalSnappy = fastUnmarshalSnappy

	TrySnappyCompress = compressJSON
)

快速jsoniter json库 -- 浮点数会丢失精度，小数点最多后6位

View Source 
var (
	ErrInvalidByteJs = errors.New(`byte.invalid.string`)
)
View Source 
var (
	ErrInvalidInt64Js = errors.New(`int64 invalid string`)
)
View Source 
var (
	ErrInvalidUInt64Js = errors.New(`uint64 invalid string`)
)
View Source 
var ErrTooLarge = errors.New("bytes.Buffer: too large")

ErrTooLarge is passed to panic if memory cannot be allocated to store data in a buffer.

View Source 
var (
	Snappy = &_Snappy{}
)

Functions

func KeyInMap 

func KeyInMap(m map[string]interface{}, k string) bool

KeyInMap : Map中是否包含了key

func LoadJSONFile2Obj 

func LoadJSONFile2Obj(fileName string, v interface{}) error

LoadJSONFile2Obj 读取json文件并序列化到传入的指针中

func MapVal2Bool 

func MapVal2Bool(m map[string]interface{}, k string) bool

MapVal2Bool : 将map中的value转换为bool

func MapVal2Bytes 

func MapVal2Bytes(m map[string]interface{}, k string) []byte

MapVal2Bytes : 将map中的value转换为[]byte

func MapVal2Float64 

func MapVal2Float64(m map[string]interface{}, k string) float64

MapVal2Float64 : 将map中的value转换为float64

func MapVal2Int 

func MapVal2Int(m map[string]interface{}, k string) int

MapVal2Int : 将map中的value转换为int

func MapVal2Int32 

func MapVal2Int32(m map[string]interface{}, k string) int32

MapVal2Int32 : 将map中的value转换为int32

func MapVal2Int64 

func MapVal2Int64(m map[string]interface{}, k string) int64

MapVal2Int64 : 将map中的value转换为int64

func MapVal2String 

func MapVal2String(m map[string]interface{}, k string) string

MapVal2String : 将map中的value转换为string

func MapVal2StringList 

func MapVal2StringList(m map[string]interface{}, k string) []string

MapVal2StringList : 将map中的value转换为string list

func MapVal2Time 

func MapVal2Time(m map[string]interface{}, k string) (time.Time, bool)

MapVal2Time : 将map中的value转换为time

func ToBool 

func ToBool(v interface{}) bool

ToBool 将基本类型转换为bool

func ToBytes 

func ToBytes(v interface{}) []byte

ToBytes 将基本类型转换为[]byte

func ToFloat64 

func ToFloat64(v interface{}) float64

ToFloat64 将基本类型转换为浮点型

func ToInt 

func ToInt(v interface{}) int

ToInt 将基本类型转换为整型

func ToInt32 

func ToInt32(v interface{}) int32

ToInt32 将基本类型转换为32位整型

func ToInt64 

func ToInt64(v interface{}) int64

ToInt64 将基本类型转换为64位整型

func ToString 

func ToString(v interface{}) string

ToString 将基本类型转换为字符串

func ToStringList 

func ToStringList(v interface{}) []string

ToStringList 将基本类型转换为字符串list

func ToTime 

func ToTime(v interface{}) (time.Time, bool)

ToTime 转换为time.Time

Types

type Base64Bytes 

type Base64Bytes []byte

func (*Base64Bytes) Scan 

func (i *Base64Bytes) Scan(value interface{}) error

func (Base64Bytes) Value 

func (i Base64Bytes) Value() (driver.Value, error)

type Buffer 

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

A Buffer is a variable-sized buffer of bytes with Read and Write methods. The zero value for Buffer is an empty buffer ready to use.

func NewBuffer 

func NewBuffer(buf []byte) *Buffer

NewBuffer creates and initializes a new Buffer using buf as its initial contents. The new Buffer takes ownership of buf, and the caller should not use buf after this call. NewBuffer is intended to prepare a Buffer to read existing data. It can also be used to set the initial size of the internal buffer for writing. To do that, buf should have the desired capacity but a length of zero.

In most cases, new(Buffer) (or just declaring a Buffer variable) is sufficient to initialize a Buffer.

func NewBufferString 

func NewBufferString(s string) *Buffer

NewBufferString creates and initializes a new Buffer using string s as its initial contents. It is intended to prepare a buffer to read an existing string.

In most cases, new(Buffer) (or just declaring a Buffer variable) is sufficient to initialize a Buffer.

func (*Buffer) Bytes 

func (b *Buffer) Bytes() []byte

Bytes returns a slice of length b.Len() holding the unread portion of the buffer. The slice is valid for use only until the next buffer modification (that is, only until the next call to a method like Read, Write, Reset, or Truncate). The slice aliases the buffer content at least until the next buffer modification, so immediate changes to the slice will affect the result of future reads.

func (*Buffer) Cap 

func (b *Buffer) Cap() int

Cap returns the capacity of the buffer's underlying byte slice, that is, the total space allocated for the buffer's data.

func (*Buffer) Grow 

func (b *Buffer) Grow(n int)

Grow grows the buffer's capacity, if necessary, to guarantee space for another n bytes. After Grow(n), at least n bytes can be written to the buffer without another allocation. If n is negative, Grow will panic. If the buffer can't grow it will panic with ErrTooLarge.

func (*Buffer) Len 

func (b *Buffer) Len() int

Len returns the number of bytes of the unread portion of the buffer; b.Len() == len(b.Bytes()).

func (*Buffer) Next 

func (b *Buffer) Next(n int) []byte

Next returns a slice containing the next n bytes from the buffer, advancing the buffer as if the bytes had been returned by Read. If there are fewer than n bytes in the buffer, Next returns the entire buffer. The slice is only valid until the next call to a read or write method.

func (*Buffer) ReWrite 

func (b *Buffer) ReWrite(pos int, p []byte)

ReWrite add a pos rewrite

func (*Buffer) Read 

func (b *Buffer) Read(p []byte) (n int, err error)

Read reads the next len(p) bytes from the buffer or until the buffer is drained. The return value n is the number of bytes read. If the buffer has no data to return, err is io.EOF (unless len(p) is zero); otherwise it is nil.

func (*Buffer) ReadByte 

func (b *Buffer) ReadByte() (byte, error)

ReadByte reads and returns the next byte from the buffer. If no byte is available, it returns error io.EOF.

func (*Buffer) ReadFrom 

func (b *Buffer) ReadFrom(r io.Reader) (n int64, err error)

ReadFrom reads data from r until EOF and appends it to the buffer, growing the buffer as needed. The return value n is the number of bytes read. Any error except io.EOF encountered during the read is also returned. If the buffer becomes too large, ReadFrom will panic with ErrTooLarge.

func (*Buffer) ReadRune 

func (b *Buffer) ReadRune() (r rune, size int, err error)

ReadRune reads and returns the next UTF-8-encoded Unicode code point from the buffer. If no bytes are available, the error returned is io.EOF. If the bytes are an erroneous UTF-8 encoding, it consumes one byte and returns U+FFFD, 1.

func (*Buffer) Reset 

func (b *Buffer) Reset()

Reset resets the buffer to be empty, but it retains the underlying storage for use by future writes. Reset is the same as Truncate(0).

func (*Buffer) String 

func (b *Buffer) String() string

String returns the contents of the unread portion of the buffer as a string. If the Buffer is a nil pointer, it returns "<nil>".

To build strings more efficiently, see the strings.Builder type.

func (*Buffer) Truncate 

func (b *Buffer) Truncate(n int)

Truncate discards all but the first n unread bytes from the buffer but continues to use the same allocated storage. It panics if n is negative or greater than the length of the buffer.

func (*Buffer) UnreadByte 

func (b *Buffer) UnreadByte() error

UnreadByte unreads the last byte returned by the most recent successful read operation that read at least one byte. If a write has happened since the last read, if the last read returned an error, or if the read read zero bytes, UnreadByte returns an error.

func (*Buffer) UnreadRune 

func (b *Buffer) UnreadRune() error

UnreadRune unreads the last rune returned by ReadRune. If the most recent read or write operation on the buffer was not a successful ReadRune, UnreadRune returns an error. (In this regard it is stricter than UnreadByte, which will unread the last byte from any read operation.)

func (*Buffer) Write 

func (b *Buffer) Write(p []byte) (n int, err error)

Write appends the contents of p to the buffer, growing the buffer as needed. The return value n is the length of p; err is always nil. If the buffer becomes too large, Write will panic with ErrTooLarge.

func (*Buffer) WriteByte 

func (b *Buffer) WriteByte(c byte) error

WriteByte appends the byte c to the buffer, growing the buffer as needed. The returned error is always nil, but is included to match bufio.Writer's WriteByte. If the buffer becomes too large, WriteByte will panic with ErrTooLarge.

func (*Buffer) WriteRune 

func (b *Buffer) WriteRune(r rune) (n int, err error)

WriteRune appends the UTF-8 encoding of Unicode code point r to the buffer, returning its length and an error, which is always nil but is included to match bufio.Writer's WriteRune. The buffer is grown as needed; if it becomes too large, WriteRune will panic with ErrTooLarge.

func (*Buffer) WriteString 

func (b *Buffer) WriteString(s string) (n int, err error)

WriteString appends the contents of s to the buffer, growing the buffer as needed. The return value n is the length of s; err is always nil. If the buffer becomes too large, WriteString will panic with ErrTooLarge.

func (*Buffer) WriteTo 

func (b *Buffer) WriteTo(w io.Writer) (n int64, err error)

WriteTo writes data to w until the buffer is drained or an error occurs. The return value n is the number of bytes written; it always fits into an int, but it is int64 to match the io.WriterTo interface. Any error encountered during the write is also returned.

type BufferX 

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

BufferX buffer implement

func NewBufferX 

func NewBufferX() *BufferX

NewBufferX new buffer with a default size as unpack

func NewBufferXFrom 

func NewBufferXFrom(data []byte) *BufferX

NewBufferXFrom new buffer from an exist bytes as packer

func NewSpecBufferX 

func NewSpecBufferX(n int) *BufferX

NewSpecBufferX new small

func (*BufferX) Bytes 

func (b *BufferX) Bytes() []byte

Bytes all buffer bytes

func (*BufferX) Len 

func (b *BufferX) Len() int

Len : buffer len

func (*BufferX) ReWrite 

func (b *BufferX) ReWrite(pos int, p []byte)

ReWrite buffer

func (*BufferX) ReWriteU32 

func (b *BufferX) ReWriteU32(pos int, v uint32)

ReWriteU32 rewrite uint32

func (*BufferX) Read 

func (b *BufferX) Read(p []byte) error

read to a buffer

func (*BufferX) ReadBool 

func (b *BufferX) ReadBool() (bool, error)

ReadBool read a bool

func (*BufferX) ReadF64 

func (b *BufferX) ReadF64() (float64, error)

ReadF64 read float64

func (*BufferX) ReadI16 

func (b *BufferX) ReadI16() (int16, error)

ReadI16 read int16

func (*BufferX) ReadI32 

func (b *BufferX) ReadI32() (int32, error)

ReadI32 read int32

func (*BufferX) ReadI64 

func (b *BufferX) ReadI64() (int64, error)

ReadI64 read int64

func (*BufferX) ReadLimitString 

func (b *BufferX) ReadLimitString(limit uint32) (string, error)

ReadLimitString read limit size string

func (*BufferX) ReadN 

func (b *BufferX) ReadN(n int) ([]byte, error)

ReadN read n length buffer

func (*BufferX) ReadString 

func (b *BufferX) ReadString() (string, error)

ReadString read string

func (*BufferX) ReadU16 

func (b *BufferX) ReadU16() (uint16, error)

ReadU16 read uint16

func (*BufferX) ReadU32 

func (b *BufferX) ReadU32() (uint32, error)

ReadU32 read uint32

func (*BufferX) ReadU64 

func (b *BufferX) ReadU64() (uint64, error)

ReadU64 read uint64

func (*BufferX) ReadU8 

func (b *BufferX) ReadU8() (byte, error)

ReadU8 read a byte

func (*BufferX) Reset 

func (b *BufferX) Reset()

Reset clear all buffer bytes

func (*BufferX) Write 

func (b *BufferX) Write(p []byte)

write to a buffer

func (*BufferX) WriteBool 

func (b *BufferX) WriteBool(v bool)

WriteBool write a bool

func (*BufferX) WriteF64 

func (b *BufferX) WriteF64(v float64)

WriteF64 write float64

func (*BufferX) WriteI16 

func (b *BufferX) WriteI16(v int16)

WriteI16 write int16

func (*BufferX) WriteI32 

func (b *BufferX) WriteI32(v int32)

WriteI32 write int32

func (*BufferX) WriteI64 

func (b *BufferX) WriteI64(v int64)

WriteI64 write int64

func (*BufferX) WriteLimitString 

func (b *BufferX) WriteLimitString(limit uint32, val string) error

WriteLimitString write limit size string

func (*BufferX) WriteString 

func (b *BufferX) WriteString(val string)

WriteString write string

func (*BufferX) WriteU16 

func (b *BufferX) WriteU16(v uint16)

WriteU16 write uint16

func (*BufferX) WriteU32 

func (b *BufferX) WriteU32(v uint32)

WriteU32 write uint32

func (*BufferX) WriteU64 

func (b *BufferX) WriteU64(v uint64)

WriteU64 write uint64

func (*BufferX) WriteU8 

func (b *BufferX) WriteU8(v byte)

WriteU8 write a byte

func (*BufferX) ZReadN 

func (b *BufferX) ZReadN(n int) ([]byte, error)

ZReadN read n length buffer - no copy

type CompressType 

type CompressType byte
const (
	CompressThreshHold              = 256
	CompressSnappy     CompressType = 128
)

type IBufferX 

type IBufferX interface {
	//Len : length
	Len() int
	//Read specific p, if length is not enough, return error
	Read(p []byte) error
	//ReadN n bytes, if length is not enough, return error
	ReadN(n int) ([]byte, error)
	//Write to buffer
	Write(p []byte)
	//Bytes left bytes
	Bytes() []byte
	//Reset reset cursor
	Reset()

	//ReWrite a buffer
	ReWrite(pos int, p []byte)
	//ReWriteU32 rewrite with a specific pos
	ReWriteU32(pos int, v uint32)

	//ReadU8 read byte
	ReadU8() (byte, error)
	//WriteU8 write byte
	WriteU8(byte)

	//ReadBool read bool
	ReadBool() (bool, error)
	//WriteBool write bool
	WriteBool(bool)

	//ReadLimitString read string
	ReadLimitString(limit uint32) (string, error)
	//WriteLimitString write string
	WriteLimitString(limit uint32, val string) error

	//ReadString read string
	ReadString() (string, error)
	//WriteString write string
	WriteString(val string)

	//ReadU16 read uint16
	ReadU16() (uint16, error)
	//WriteU16 write uint16
	WriteU16(uint16)

	//ReadI16 read int16
	ReadI16() (int16, error)
	//WriteI16 write int16
	WriteI16(int16)

	//ReadU32 read uint32
	ReadU32() (uint32, error)
	//WriteU32 write uint32
	WriteU32(uint32)

	//ReadI32 read int32
	ReadI32() (int32, error)
	//WriteI32 write int32
	WriteI32(int32)

	//ReadU64 read uint64
	ReadU64() (uint64, error)
	//WriteU64 write uint64
	WriteU64(uint64)

	//ReadI64 read int64
	ReadI64() (int64, error)
	//WriteI64 write int64
	WriteI64(int64)

	//ReadF64 read float64
	ReadF64() (float64, error)
	//WriteF64 write float64
	WriteF64(float64)
}

IBufferX buffer interface

type IReaderX 

type IReaderX interface {
	//Read : read specific p, if length is not enough, return error
	Read(p []byte) error
	//ReadN : read n bytes, if length is not enough, return error
	ReadN(n int) ([]byte, error)

	ZReadN(n int) ([]byte, error)

	//ReadByte : read byte
	ReadByte() (byte, error)
	//ReadBool : read bool
	ReadBool() (bool, error)

	//ReadLimitString : read string
	ReadLimitString(limit uint32) (string, error)

	//ReadString : read string
	ReadString() (string, error)

	//ReadU16 : read uint16
	ReadU16() (uint16, error)

	//ReadI16 : read int16
	ReadI16() (int16, error)

	//ReadU32 : read uint32
	ReadU32() (uint32, error)

	//ReadI32 : read int32
	ReadI32() (int32, error)

	//ReadU64 : read uint64
	ReadU64() (uint64, error)

	//ReadI64 : read int64
	ReadI64() (int64, error)

	//ReadF64 : read float64
	ReadF64() (float64, error)
}

IReaderX reader interface

type JsByte 

type JsByte []byte

JsByte json could not support readable []byte use string to replace the byte array

func (*JsByte) FromString 

func (i *JsByte) FromString(strBuf string) error

FromString from string

func (JsByte) MarshalJSON 

func (i JsByte) MarshalJSON() ([]byte, error)

MarshalJSON marshal json

func (JsByte) ToJS 

func (i JsByte) ToJS() []byte

ToJS split byte to string use '/' split

func (JsByte) ToString 

func (i JsByte) ToString() string

ToString split byte to byte use '/' split

func (*JsByte) UnmarshalJSON 

func (i *JsByte) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshal json

type JsInt64 

type JsInt64 int64

JsInt64 json could not support large number use string to replace the number if a field is int64

func MapVal2JsInt64 

func MapVal2JsInt64(m map[string]interface{}, k string) JsInt64

MapVal2JsInt64 : 将map中的value转换为 json int64

func ToJsInt64 

func ToJsInt64(v interface{}) JsInt64

ToJsInt64 将基本类型转换为json int64整型

func (JsInt64) MarshalJSON 

func (i JsInt64) MarshalJSON() ([]byte, error)

MarshalJSON marshal json

func (*JsInt64) UnmarshalJSON 

func (i *JsInt64) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshal json

type JsUInt64 

type JsUInt64 uint64

JsUInt64 json could not support large number use string to replace the number if a field is uint64

func (JsUInt64) MarshalJSON 

func (i JsUInt64) MarshalJSON() ([]byte, error)

MarshalJSON marshal json

func (*JsUInt64) UnmarshalJSON 

func (i *JsUInt64) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshal json

type ReaderX 

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

ReaderX buffer implement

func NewReaderX 

func NewReaderX(reader io.Reader) *ReaderX

NewReaderX new with io.reader

func (*ReaderX) Read 

func (b *ReaderX) Read(p []byte) error

Read : read to a buffer

func (*ReaderX) ReadBool 

func (b *ReaderX) ReadBool() (bool, error)

ReadBool read a bool

func (*ReaderX) ReadByte 

func (b *ReaderX) ReadByte() (byte, error)

ReadByte read a byte

func (*ReaderX) ReadF64 

func (b *ReaderX) ReadF64() (float64, error)

ReadF64 read float64

func (*ReaderX) ReadI16 

func (b *ReaderX) ReadI16() (int16, error)

ReadI16 read int16

func (*ReaderX) ReadI32 

func (b *ReaderX) ReadI32() (int32, error)

ReadI32 read int32

func (*ReaderX) ReadI64 

func (b *ReaderX) ReadI64() (int64, error)

ReadI64 read int64

func (*ReaderX) ReadLimitString 

func (b *ReaderX) ReadLimitString(limit uint32) (string, error)

ReadLimitString read limit size string

func (*ReaderX) ReadN 

func (b *ReaderX) ReadN(n int) ([]byte, error)

ReadN read n length buffer

func (*ReaderX) ReadString 

func (b *ReaderX) ReadString() (string, error)

ReadString read string

func (*ReaderX) ReadU16 

func (b *ReaderX) ReadU16() (uint16, error)

ReadU16 read uint16

func (*ReaderX) ReadU32 

func (b *ReaderX) ReadU32() (uint32, error)

ReadU32 read uint32

func (*ReaderX) ReadU64 

func (b *ReaderX) ReadU64() (uint64, error)

ReadU64 read uint64

func (*ReaderX) ZReadN 

func (b *ReaderX) ZReadN(n int) ([]byte, error)

ZReadN read n length buffer - no copy

type U128BitMap 

type U128BitMap struct {
	Low  U64BitMap
	High U64BitMap
}

U128BitMap use 2 uint64 Low and High

func (*U128BitMap) Bytes 

func (u *U128BitMap) Bytes() []byte

func (*U128BitMap) FromBytes 

func (u *U128BitMap) FromBytes(buf []byte)

func (*U128BitMap) Full 

func (u *U128BitMap) Full() bool

func (*U128BitMap) Left 

func (u *U128BitMap) Left() []byte

func (*U128BitMap) Len 

func (u *U128BitMap) Len() int

func (*U128BitMap) ReverseLen 

func (u *U128BitMap) ReverseLen() int

func (*U128BitMap) Set 

func (u *U128BitMap) Set(i byte)

func (*U128BitMap) Values 

func (u *U128BitMap) Values() []byte

type U64BitMap 

type U64BitMap uint64

func (U64BitMap) Bytes 

func (b U64BitMap) Bytes() []byte

func (*U64BitMap) FromBytes 

func (b *U64BitMap) FromBytes(buf []byte)

func (U64BitMap) Full 

func (b U64BitMap) Full() bool

func (U64BitMap) Left 

func (b U64BitMap) Left() []byte

func (U64BitMap) LeftX 

func (b U64BitMap) LeftX(plus byte) []byte

func (U64BitMap) Len 

func (b U64BitMap) Len() int

func (U64BitMap) ReverseLen 

func (b U64BitMap) ReverseLen() int

func (*U64BitMap) Set 

func (b *U64BitMap) Set(i byte)

func (U64BitMap) Values 

func (b U64BitMap) Values() []byte

func (U64BitMap) ValuesX 

func (b U64BitMap) ValuesX(plus byte) []byte

type Unix2Time 

type Unix2Time time.Time

Unix2Time 秒时间戳时间

func (*Unix2Time) Scan 

func (s *Unix2Time) Scan(value interface{}) error

Scan : sql scan

func (Unix2Time) Value 

func (s Unix2Time) Value() (driver.Value, error)

Value : sql value

type UnixNano2Time 

type UnixNano2Time time.Time

UnixNano2Time 纳秒时间戳时间

func (*UnixNano2Time) Scan 

func (s *UnixNano2Time) Scan(value interface{}) error

Scan : sql scan

func (UnixNano2Time) Value 

func (s UnixNano2Time) Value() (driver.Value, error)

Value : sql value

type UnixStamp 

type UnixStamp int64

UnixStamp 时间转成秒(只需要秒/Database中的datetime)

func (UnixStamp) MarshalJSON 

func (i UnixStamp) MarshalJSON() ([]byte, error)

MarshalJSON marshal json

func (*UnixStamp) Scan 

func (i *UnixStamp) Scan(value interface{}) error

Scan : sql scan

func (*UnixStamp) UnmarshalJSON 

func (i *UnixStamp) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshal json

func (UnixStamp) Value 

func (i UnixStamp) Value() (driver.Value, error)

Value : sql value

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