wkt

Documentation

Overview

Package wkt is for decoding Well Known Text (WKT) format specification at https://en.wikipedia.org/wiki/Well-known_text_representation_of_geometry#Well-known_binary

Index

• Constants
• func MarshalString(geom space.Geometry) string
• func UnmarshalString(s string) (space.Geometry, error)
• type Lexer
  • func NewLexer(reader io.Reader) *Lexer
  • func (l *Lexer) Peek() rune
• type Parser
  • func (p *Parser) Parse() (space.Geometry, error)
• type Token
• type WKTEncoder
  • func (e *WKTEncoder) Decode(s []byte) (space.Geometry, error)
  • func (e *WKTEncoder) Encode(g space.Geometry) []byte
  • func (e *WKTEncoder) Read(r io.Reader) (space.Geometry, error)
  • func (e *WKTEncoder) ReadGeoJSON(r io.Reader) (*geojson.FeatureCollection, error)
  • func (e *WKTEncoder) Write(w io.Writer, g space.Geometry) error
  • func (e *WKTEncoder) WriteGeoJSON(w io.Writer, g *geojson.FeatureCollection) error

Constants

const (
	// Separator
	LeftParen tokenType = iota
	RightParen
	Comma
	EqualSign
	Semicolon

	// Keyword
	Empty
	Z
	M
	ZM

	Srid

	// Geometry type
	PointEnum
	Linestring
	PolygonEnum
	Multipoint
	MultilineString
	MultiPolygonEnum
	GeometryCollection

	// Values
	Float
	Int

	EOF
)

const ...

Functions

func MarshalString

func MarshalString(geom space.Geometry) string

MarshalString decode to string

func UnmarshalString

func UnmarshalString(s string) (space.Geometry, error)

UnmarshalString encode to geom

Types

type Lexer

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

Lexer ...

func NewLexer

func NewLexer(reader io.Reader) *Lexer

NewLexer ...

func (*Lexer) Peek

func (l *Lexer) Peek() rune

Peek ...

type Parser

type Parser struct {
	*Lexer
}

Parser ...

func (*Parser) Parse

func (p *Parser) Parse() (space.Geometry, error)

Parse ...

type Token

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

Token ...

type WKTEncoder

type WKTEncoder struct {
	geojson.BaseEncoder
}

func (*WKTEncoder) Decode

func (e *WKTEncoder) Decode(s []byte) (space.Geometry, error)

Decode Returns geometry of that decode string by codeType.

func (*WKTEncoder) Encode

func (e *WKTEncoder) Encode(g space.Geometry) []byte

Encode Returns string of that encode geometry by codeType.

func (*WKTEncoder) Read

func (e *WKTEncoder) Read(r io.Reader) (space.Geometry, error)

Read Returns geometry from reader.

func (*WKTEncoder) ReadGeoJSON

func (e *WKTEncoder) ReadGeoJSON(r io.Reader) (*geojson.FeatureCollection, error)

ReadGeoJSON Returns geometry from reader .

func (*WKTEncoder) Write

func (e *WKTEncoder) Write(w io.Writer, g space.Geometry) error

Write write geometry to reader.

func (*WKTEncoder) WriteGeoJSON

func (e *WKTEncoder) WriteGeoJSON(w io.Writer, g *geojson.FeatureCollection) error

WriteGeoJSON write geometry to writer.