common

package
v0.1.0 Latest Latest
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 Go to latest Published: Jun 18, 2021 License: MIT Imports: 3 Imported by: 0

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Constants

View Source 
const (
	AMT_TYPE  = "AMT_TYPE"  //原始 ASN 类型 : {"expr_type":"INTEGER","meta_type":"AMT_TYPE","constraints":{"type":"SIZE_RANG","min":1,"max":255},"Identifier":"Speed"}
	ASN_TYPE  = "ASN_TYPE"  //自定义类型
	AMT_VALUE = "AMT_VALUE" //数字类型如 ENUMERATED {solid(1), liquid(2), gas(3)} 其中成员 solid 定义: {"expr_type":"A1TC_UNIVERVAL","meta_type":"AMT_VALUE","Identifier":"solid","value":1}
)
View Source 
const IDENTIFY_EXTENSIBLE = "..."

Variables

This section is empty.

Functions

This section is empty.

Types

type Bit 

type Bit bool

type BitBuffer 

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

func NewBitBuffer 

func NewBitBuffer() *BitBuffer

func NewBitBufferFromBitString 

func NewBitBufferFromBitString(bitString string) *BitBuffer

func NewBitBufferFromBytes 

func NewBitBufferFromBytes(buf []byte) *BitBuffer

func (*BitBuffer) Bits 

func (b *BitBuffer) Bits() []Bit

func (*BitBuffer) ByteLength 

func (b *BitBuffer) ByteLength() int

计算当前字节长度

func (*BitBuffer) Bytes 

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

返回比特数组

func (*BitBuffer) Error 

func (b *BitBuffer) Error() error

最后需要通过该接口判断是否出错

func (*BitBuffer) Length 

func (b *BitBuffer) Length() int

当前的比特长度

func (*BitBuffer) PushBit 

func (b *BitBuffer) PushBit(bit Bit) *BitBuffer

func (*BitBuffer) PushBit2 

func (b *BitBuffer) PushBit2(value byte) *BitBuffer

value: 0 or 1

func (*BitBuffer) PushBitBuffer 

func (b *BitBuffer) PushBitBuffer(bitBuffer *BitBuffer) *BitBuffer

func (*BitBuffer) PushBits 

func (b *BitBuffer) PushBits(bit []Bit) *BitBuffer

func (*BitBuffer) PushBool 

func (b *BitBuffer) PushBool(bit bool) *BitBuffer

func (*BitBuffer) PushByte 

func (b *BitBuffer) PushByte(byte2 byte, bit_len int) *BitBuffer

func (*BitBuffer) PushBytes 

func (b *BitBuffer) PushBytes(buf []byte, bit_len int) *BitBuffer

func (*BitBuffer) PushInteger 

func (b *BitBuffer) PushInteger(value uint64, bit_len int) *BitBuffer

添加一个指定比特长度的整数

func (*BitBuffer) Result 

func (b *BitBuffer) Result() ([]byte, error)

func (*BitBuffer) ReverseBits 

func (b *BitBuffer) ReverseBits() []Bit

返回逆转后的 []Bit

func (*BitBuffer) SetError 

func (b *BitBuffer) SetError(err error) *BitBuffer

外部可设置编码是否出错

func (*BitBuffer) SetErrorText 

func (b *BitBuffer) SetErrorText(txt string) *BitBuffer

外部可设置编码是否出错

func (*BitBuffer) SetErrorTextf 

func (b *BitBuffer) SetErrorTextf(format string, args ...interface{}) *BitBuffer

外部可设置编码是否出错

func (*BitBuffer) ShiftBit 

func (b *BitBuffer) ShiftBit() Bit

读取一个比特

func (*BitBuffer) ShiftBits 

func (b *BitBuffer) ShiftBits(bit_len int) []Bit

func (*BitBuffer) ShiftBool 

func (b *BitBuffer) ShiftBool() bool

func (*BitBuffer) ShiftByte 

func (b *BitBuffer) ShiftByte(bit_len int) byte

根据比特数读取一个bye

func (*BitBuffer) ShiftBytes 

func (b *BitBuffer) ShiftBytes(bit_len int) []byte

根据比特数读取一个[]bye

func (*BitBuffer) ShiftInteger 

func (b *BitBuffer) ShiftInteger(bit_len int) uint64

根据比特数读取一个整数

func (*BitBuffer) String 

func (b *BitBuffer) String() string

type Constraint 

type Constraint struct {
	Type Type `json:"type"` //SIZE_FIXED SIZE_RANG SIZE_FIXED_AND_EXT SIZE_RANG_AND_EXT REAL_WITH_COMPONENTS
	//SIZE_FIXED SIZE_FIXED_AND_EXT 定长时包含 Value
	Value int64 `json:"value"`
	//SIZE_RANG SIZE_RANG_AND_EXT 变长时包含值范围
	Min int64 `json:"min"`
	Max int64 `json:"max"`
	//Type 为 REAL_WITH_COMPONENTS 时的约束
	Base     int `json:"base"`     //10
	Exponent int `json:"exponent"` //-2
}

func (*Constraint) HasExt 

func (c *Constraint) HasExt() bool

是否可扩展

func (*Constraint) IsOutOfRange 

func (c *Constraint) IsOutOfRange(val int64) bool

判断某个值是否超出了指定范围

func (*Constraint) IsRange 

func (c *Constraint) IsRange() bool

判断约束是否是变长的

func (*Constraint) Range 

func (c *Constraint) Range() uint64

获取约束的范围 0~range

func (*Constraint) RangeBitLength 

func (c *Constraint) RangeBitLength() int

获取该范围 uper 编码需要的比特长度

type ExprType 

type ExprType string
const (
	AMT_TYPE_INTEGER      ExprType = "INTEGER"
	AMT_TYPE_BOOLEAN      ExprType = "BOOLEAN"
	AMT_TYPE_CHOICE       ExprType = "CHOICE"
	AMT_TYPE_ENUMERATED   ExprType = "ENUMERATED"
	AMT_TYPE_SEQUENCE     ExprType = "SEQUENCE"
	AMT_TYPE_IA5String    ExprType = "IA5String"
	AMT_TYPE_OCTET_STRING ExprType = "OCTET_STRING"
	AMT_TYPE_BIT_STRING   ExprType = "BIT_STRING"
	AMT_TYPE_REAL         ExprType = "REAL"
	AMT_TYPE_SEQUENCE_OF  ExprType = "SEQUENCE_OF"
)

type Flag 

type Flag string
const (
	EM_NOMARK   Flag = "EM_NOMARK"
	EM_OPTIONAL Flag = "EM_OPTIONAL"
)

type Marker 

type Marker struct {
	Flags Flag `json:"flags"`
}

func (*Marker) IsOptional 

func (m *Marker) IsOptional() bool

判断是否是可选的

type Member 

type Member struct {
	Members     []Member    `json:"members,omitempty"`     //包含的字段
	ExprType    ExprType    `json:"expr_type"`             // AMT_TYPE 类型 INTEGER,BOOLEAN,CHOICE,ENUMERATED,SEQUENCE,IA5String,OCTET_STRING,BIT_STRING,REAL,SEQUENCE_OF
	MetaType    string      `json:"meta_type"`             // AMT_TYPE（原始 ASN 类型） ASN_TYPE(自定义类型) AMT_VALUE(数字类型如 ENUMERATED {solid(1), liquid(2), gas(3)})
	Constraints *Constraint `json:"constraints,omitempty"` //约束
	Identifier  string      `json:"Identifier"`            //字段名称，注意标识符为 ...(IDENTIFY_EXTENSIBLE) 时需特殊处理扩展的情况
	Marker      *Marker     `json:"marker,omitempty"`      //"marker": { "flags": "EM_OPTIONAL" }
	Value       int         `json:"value"`                 //meta_type 为 AMT_VALUE 需要处理该字段,若没设置时,value 为 -1
}

func (Member) ExtMemberCount 

func (m Member) ExtMemberCount() int

扩展标记后面的成员都是可扩展成员

func (Member) HasExtLabel 

func (m Member) HasExtLabel() bool

Sequence 判断是否有可扩展的标记 ...

func (Member) HasOptionalMember 

func (m Member) HasOptionalMember() bool

是否包含可选的子成员

func (Member) IsExtLabel 

func (m Member) IsExtLabel() bool

判断该成员是否是个扩展标记

func (Member) MemberCount 

func (m Member) MemberCount() int

获取非扩展的成员数量

func (Member) MemberCountBitLength 

func (m Member) MemberCountBitLength() int

非扩展的成员数量需要的编码 bit_len

func (Member) OptionalCount 

func (m Member) OptionalCount() int

返回有可选标记(OPTIONAL)的子成员数,不包含扩展成员

type Module 

type Module struct {
	ModuleName string   `json:"moduleName"`
	Flags      string   `json:"flags"` //MSF_AUTOMATIC_TAGS
	Members    []Member `json:"members,omitempty"`
}

type Type 

type Type string
const (
	SIZE_FIXED           Type = "SIZE_FIXED"           //定长 SIZE(5)
	SIZE_RANG            Type = "SIZE_RANG"            //变长 SIZE(1..8)
	SIZE_FIXED_AND_EXT   Type = "SIZE_FIXED_AND_EXT"   //定长可扩展 SIZE(5,...) Max==Min
	SIZE_RANG_AND_EXT    Type = "SIZE_RANG_AND_EXT"    //变长可扩展 SIZE(1..7,...) //暂时没有这个
	REAL_WITH_COMPONENTS Type = "REAL_WITH_COMPONENTS" //Type 为 REAL_WITH_COMPONENTS 时包含 Base 和 Exponent 约束
)

type UperDecoder 

type UperDecoder interface {
	UperDecode(buffer *BitBuffer)
}

type UperEncoder 

type UperEncoder interface {
	UperEncode() *BitBuffer
}

Source Files

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