cache

Documentation

Index

• Constants
• func CacheId(code string) string
• func CacheIdPath(code string) string
• func CheckFilepath(filename string) error
• func CorrectDate(date string) string
• func FileExist(path string) bool
• func GetCache(fullCode string) *os.File
• func GetDayPath() string
• func GetInfoPath() string
• func GetKLineFilename(fullCode string) string
• func GetTickPath() string
• func KLineFilename(code string) string
• func KLinePath(fc string) (string, string, int)
• func LastDate() time.Time
• func TickFilename(code string, date string) string
• func Today() string
• type CacheType
• type DataFrame
  • func (this DataFrame) Offset(n int) (date []string, vOpen []float64, vClose []float64, vHigh []float64, ...)
• type FastCache
  • func Create(filename string, size int64) (*FastCache, error)
  • func Open(filename string) (*FastCache, error)
  • func (fc *FastCache) Close()

Constants

const (
	DAY_PATH  = "day"  // 日线路径
	INFO_PATH = "info" // 信息路径
	TICK_PATH = "tick" // tick路径
)

const (
	CACHE_TARS  CacheType = iota
	CACHE_CSV             = 1 // CSV
	CACHE_EXCEL           = 2 // EXCEL
)

Functions

func CacheId

func CacheId(code string) string

CacheId 通过代码构建目录结构

func CacheIdPath

func CacheIdPath(code string) string

CacheIdPath code从后保留3位, 市场缩写+从头到倒数第3的代码, 确保每个目录只有000~999个代码

func CheckFilepath

func CheckFilepath(filename string) error

CheckFilepath

检查filename 文件路径, 如果不存在就创建

func CorrectDate

func CorrectDate(date string) string

CorrectDate 矫正日期, 统一格式

func FileExist

func FileExist(path string) bool

FileExist 路径是否存在

func GetCache

func GetCache(fullCode string) *os.File

func GetDayPath

func GetDayPath() string

GetDayPath 历史数据-日线缓存路径

func GetInfoPath

func GetInfoPath() string

GetInfoPath 证券信息路径

func GetKLineFilename

func GetKLineFilename(fullCode string) string

GetKLineFilename 获取缓存的文件名

Deprecated: 不推荐使用, 建议使用 KLineFilename

func GetTickPath

func GetTickPath() string

func KLineFilename

func KLineFilename(code string) string

KLineFilename KLine缓存路径

func KLinePath

func KLinePath(fc string) (string, string, int)

func LastDate

func LastDate() time.Time

LastDate 最后一个有效交易日期

func TickFilename

func TickFilename(code string, date string) string

TickFilename tick文件比较多, 目录结构${tick}/${YYYY}/${YYYYMMDD}/${CacheIdPath}

func Today

func Today() string

Types

type CacheType

type CacheType int

var (
	// CACHE_ROOT_PATH cache路径
	CACHE_ROOT_PATH           = category.DATA_ROOT_PATH
	CACHE_TYPE      CacheType = CACHE_TARS
)

type DataFrame

type DataFrame struct {
	Length int       `json:"length"`
	Date   []string  `json:"date"`
	Open   []float64 `json:"open"`
	High   []float64 `json:"high"`
	Low    []float64 `json:"low"`
	Close  []float64 `json:"close"`
	Volume []int64   `json:"volume"`
}

DataFrame 数据帧

func (DataFrame) Offset

func (this DataFrame) Offset(n int) (date []string, vOpen []float64, vClose []float64, vHigh []float64, vLow []float64, vVolume []int64)

type FastCache

type FastCache struct {
	Data []byte
	// contains filtered or unexported fields
}

func Create

func Create(filename string, size int64) (*FastCache, error)

func Open

func Open(filename string) (*FastCache, error)

func (*FastCache) Close

func (fc *FastCache) Close()