utils

package
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 Go to latest Published: Mar 29, 2016 License: BSD-2-Clause Imports: 32 Imported by: 6

Documentation

Overview

这里实现bitmap索引

Package serving provides ...

Package utils provides ...

Package utils provides ...

Package utils provides ... copy from http://golang.org/src/pkg/encoding/json/tags.go

copy from github.com/zenazn/goji/web/util

Index

Constants

View Source 
const AuthTag = "dm"

Variables

View Source 
var MinMaxError = errors.New("Min cannot be greater than max.")

Functions

func FieldByIndex 

func FieldByIndex(v reflect.Value, index []int) reflect.Value

{{{ func FieldByIndex(v reflect.Value, index []int) reflect.Value * 通过索引返回field

func FieldExists 

func FieldExists(i interface{}, f string) bool

{{{ func FieldExists(i interface{},f string) bool * 判断一个结构变量是否有某个字段

func FileExists 

func FileExists(name string) bool

FileExists reports whether the named file or directory exists.

func GetFuncName 

func GetFuncName(i interface{}) string

get function name

func GetRealString 

func GetRealString(v reflect.Value) string

{{{ func GetRealString(v reflect.Value) string *

func GrepFile 

func GrepFile(patten string, filename string) (lines []string, err error)

like command grep -E for example: GrepFile(`^hello`, "hello.txt") \n is striped while read

func HashSha1 

func HashSha1(i ...string) string

{{{ func HashSha1(orig, salt string) string * 密码加密

func ImportValue 

func ImportValue(i interface{}, is map[string]string) (err error)

{{{ func ImportVal(i interface{}, import map[string]string) (err error) * 将tag匹配的值导入结构

func InSlice 

func InSlice(v string, sl []string) bool

InSlice checks given string in string slice or not.

func InSliceIface 

func InSliceIface(v interface{}, sl []interface{}) bool

InSliceIface checks given interface in interface slice.

func InSliceInt 

func InSliceInt(v int, sl []int) bool

InSliceInt checks given int in int slice or not.

func IntRange 

func IntRange(min, max int) (int, error)

{{{ func IntRange(min, max int) (int, error) *

func IsEmptyValue 

func IsEmptyValue(v reflect.Value) bool

{{{ func IsEmptyValue(v reflect.Value) bool *

func LengthenUUID 

func LengthenUUID(s string) (ls string)

func NewShortUUID 

func NewShortUUID() string

func NewShortUUID5 

func NewShortUUID5(namespace, data string) string

func NewUUID 

func NewUUID() string

default, version 4

func NewUUID5 

func NewUUID5(namespace, data string) string

generate uuid v5 namespace直接写域名或者url

func ParseFloat 

func ParseFloat(f float64) float64

func ParseOTP 

func ParseOTP(header http.Header, key string) (value, typ, sn string, err error)

ParseOTP parses x-qh-otp headers.

func ParseValueAndParams 

func ParseValueAndParams(header http.Header, key string) (value string, params map[string]string)

ParseValueAndParams parses a comma separated list of values with optional semicolon separated name-value pairs. Content-Type and Content-Disposition headers are in this format.

func PurgeSlice 

func PurgeSlice(v string, sl []string) []string

Purge Slice

func RandomCreateBytes 

func RandomCreateBytes(n int, alphabets string) []byte

RandomCreateBytes generate random []byte by specify chars. func RandomCreateBytes(n int, alphabets ...byte) []byte {

func ReadIntFromBytes 

func ReadIntFromBytes(bs []byte) (r int)

{{{ func ReadIntFromBytes(bs []byte) (r int) *

func ReadLines 

func ReadLines(path string) ([]string, error)

readLines reads a whole file into memory and returns a slice of its lines.

func Round 

func Round(f float64, n int) float64

func SearchFile 

func SearchFile(filename string, paths ...string) (fullpath string, err error)

Search a file in paths. this is often used in search config file in /etc ~/

func SelfDir 

func SelfDir() string

SelfDir gets compiled executable file directory

func SelfPath 

func SelfPath() string

SelfPath gets compiled executable file absolute path

func ShortenUUID 

func ShortenUUID(s string) (ss string)

func Shuffle 

func Shuffle(a []interface{})

func ShuffleInt 

func ShuffleInt(a []int)

func ShuffleString 

func ShuffleString(a []string)

func SliceChunk 

func SliceChunk(slice []interface{}, size int) (chunkslice [][]interface{})

SliceChuck separates one slice to some sized slice.

func SliceDiff 

func SliceDiff(slice1, slice2 []interface{}) (diffslice []interface{})

SliceDiff returns diff slice of slice1 - slice2.

func SliceFilter 

func SliceFilter(slice []interface{}, a filtertype) (ftslice []interface{})

SliceFilter generates a new slice after filter function.

func SliceIntersect 

func SliceIntersect(slice1, slice2 []interface{}) (diffslice []interface{})

SliceIntersect returns diff slice of slice2 - slice1.

func SliceMerge 

func SliceMerge(slice1, slice2 []interface{}) (c []interface{})

SliceMerge merges interface slices to one slice.

func SlicePad 

func SlicePad(slice []interface{}, size int, val interface{}) []interface{}

SlicePad prepends size number of val into slice.

func SliceRand 

func SliceRand(a []interface{}) (b interface{})

SliceRand returns random one from slice.

func SliceRandList 

func SliceRandList(min, max int) []int

SliceRandList generate an int slice from min to max.

func SliceRange 

func SliceRange(start, end, step int64) (intslice []int64)

SliceRange generates a new slice from begin to end with step duration of int64 number.

func SliceReduce 

func SliceReduce(slice []interface{}, a reducetype) (dslice []interface{})

SliceReduce generates a new slice after parsing every value by reduce function

func SliceShuffle 

func SliceShuffle(slice []interface{}) []interface{}

SliceShuffle shuffles a slice.

func SliceSum 

func SliceSum(intslice []int64) (sum int64)

SliceSum sums all values in int64 slice.

func SliceUnique 

func SliceUnique(slice []interface{}) (uniqueslice []interface{})

SliceUnique cleans repeated values in slice.

func Underscore 

func Underscore(camelCaseWord string) string

{{{ Underscore * 小程序, 把驼峰式转化为匈牙利式

func WriteLines 

func WriteLines(lines []string, path string) error

writeLines writes the lines to the given file.

Types

type Attachment 

type Attachment struct {
	Filename string
	Header   textproto.MIMEHeader
	Content  []byte
}

Attachment is a struct representing an email attachment. Based on the mime/multipart.FileHeader struct, Attachment contains the name, MIMEHeader, and content of the attachment in question

type Auth 

type Auth struct {
	SecretKeyID    string
	SecretKey      string
	Signature      string
	StringToSign   string
	ClientUniqueID string
	Path           string
	Date           string
	ExpectedSign   string
}

func (*Auth) CheckAuth 

func (a *Auth) CheckAuth(r *http.Request) error

{{{ CheckAuth

type BitmapIndex 

type BitmapIndex struct {
	Data  []byte //数据用[]byte存放,一个元素(block)8bit
	Ext   []byte //扩展数据,也是[]byte
	Start int    //开始的block
	End   int    //结束的block
}

func NewBitmapIndex 

func NewBitmapIndex(s []int) *BitmapIndex

{{{ func NewBitmapIndex(s []int) *BitmapIndex * 根据一个整数slice建立索引

func OR 

func OR(bis []*BitmapIndex) (obi *BitmapIndex)

{{{ func OR(bis []*BitmapIndex) *BitmapIndex * 求所有索引并集

func ReadBitmapIndex 

func ReadBitmapIndex(ib []byte) (bi *BitmapIndex, err error)

{{{ func ReadBitmapIndex(ib []byte) (*BitmapIndex,error) * 从[]byte里读取BitmapIndex,应用场景为从文件或者内存中拿到[]byte,转化为索引

func (*BitmapIndex) And 

func (bi *BitmapIndex) And(obi *BitmapIndex) (nbi *BitmapIndex)

{{{ func (bi *BitmapIndex) And(obi *BitmapIndex) *BitmapIndex * 求交集

func (*BitmapIndex) AndBreak 

func (bi *BitmapIndex) AndBreak(obis []*BitmapIndex) (nbi *BitmapIndex)

{{{ func (bi *BitmapIndex) AndBreak(obis []*BitmapIndex) *BitmapIndex * 第一个交集不为空

func (*BitmapIndex) Bytes 

func (bi *BitmapIndex) Bytes() (ib []byte, err error)

{{{ func (bi *BitmapIndex) Bytes() ([]byte, error) * 将BitmapIndex转化为[]byte,方便存放到文件或者内存中去

func (*BitmapIndex) Not 

func (bi *BitmapIndex) Not(obi *BitmapIndex) (nbi *BitmapIndex)

{{{ func (bi *BitmapIndex) Not(obi *BitmapIndex) *BitmapIndex * 求差集

func (*BitmapIndex) Or 

func (bi *BitmapIndex) Or(obi *BitmapIndex) (nbi *BitmapIndex)

{{{ func (bi *BitmapIndex) Or(obi *BitmapIndex) *BitmapIndex * 求合集

func (*BitmapIndex) Slices 

func (bi *BitmapIndex) Slices() (s []int, err error)

{{{ func (bi *BitmapIndex) Slices() ([]int, error) * 将BitmapIndex转化为[]int

type Choice 

type Choice struct {
	Weight int
	Item   interface{}
}

A Choice contains a generic item and a weight controlling the frequency with which it will be selected.

func WeightedChoice 

func WeightedChoice(choices []Choice) (Choice, error)

WeightedChoice used weighted random selection to return one of the supplied choices. Weights of 0 are never selected. All other weight values are relative. E.g. if you have two choices both weighted 3, they will be returned equally often; and each will be returned 3 times as often as a choice weighted 1.

type Email 

type Email struct {
	Auth        smtp.Auth
	Identity    string `json:"identity"`
	Username    string `json:"username"`
	Password    string `json:"password"`
	Host        string `json:"host"`
	Port        int    `json:"port"`
	From        string `json:"from"`
	To          []string
	Bcc         []string
	Cc          []string
	Subject     string
	Text        string // Plaintext message (optional)
	HTML        string // Html message (optional)
	Headers     textproto.MIMEHeader
	Attachments []*Attachment
	ReadReceipt []string
}

Email is the type used for email messages

func NewEMail 

func NewEMail(config string) *Email

NewEMail create new Email struct with config json. config json is followed from Email struct fields.

func (*Email) Attach 

func (e *Email) Attach(r io.Reader, filename string, c string) (a *Attachment, err error)

Attach is used to attach content from an io.Reader to the email. Parameters include an io.Reader, the desired filename for the attachment, and the Content-Type.

func (*Email) AttachFile 

func (e *Email) AttachFile(filename string) (a *Attachment, err error)

Add attach file to the send mail

func (*Email) Bytes 

func (e *Email) Bytes() ([]byte, error)

Make all send information to byte

func (*Email) Send 

func (e *Email) Send() error

type SafeMap 

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

func NewSafeMap 

func NewSafeMap(i ...map[interface{}]interface{}) *SafeMap

NewSafeMap return new safemap 可传入一个存在的map作为初始map

func (*SafeMap) Check 

func (m *SafeMap) Check(k interface{}) bool

Returns true if k is exist in the map.

func (*SafeMap) Delete 

func (m *SafeMap) Delete(k interface{})

Delete the given key and value.

func (*SafeMap) Get 

func (m *SafeMap) Get(k interface{}) interface{}

Get from maps return the k's value

func (*SafeMap) Items 

func (m *SafeMap) Items() map[interface{}]interface{}

Items returns all items in safemap.

func (*SafeMap) Set 

func (m *SafeMap) Set(k interface{}, v interface{}) bool

Maps the given key and value. Returns false if the key is already in the map and changes nothing.

type StructColumn 

type StructColumn struct {
	Tag        string
	Name       string
	TagOptions TagOptions
	ExtTag     string
	ExtOptions TagOptions
	Type       reflect.Type
	Index      []int
}

func ReadStructColumns 

func ReadStructColumns(i interface{}, underscore bool, tags ...string) (cols []StructColumn)

{{{ func ReadStructColumns(i interface{}, tag string, underscore bool) (cols []string) * 从struct type中读取字段名 * 默认从struct的FieldName读取, 如果tag里有db, 则以db为准

type TagOptions 

type TagOptions string

tagOptions is the string following a comma in a struct field's "json" tag, or the empty string. It does not include the leading comma.

func ParseTag 

func ParseTag(tag string) (string, TagOptions)

parseTag splits a struct field's json tag into its name and comma-separated options. 第一个逗号之前的为tag, 之后为Options

func (TagOptions) Contains 

func (o TagOptions) Contains(optionName string) bool

Contains reports whether a comma-separated list of options contains a particular substr flag. substr must be surrounded by a string boundary or commas.

type WriterProxy 

type WriterProxy interface {
	http.ResponseWriter
	// Status returns the HTTP status of the request, or 0 if one has not
	// yet been sent.
	Status() int
	// BytesWritten returns the total number of bytes sent to the client.
	BytesWritten() int
	// Tee causes the response body to be written to the given io.Writer in
	// addition to proxying the writes through. Only one io.Writer can be
	// tee'd to at once: setting a second one will overwrite the first.
	// Writes will be sent to the proxy before being written to this
	// io.Writer. It is illegal for the tee'd writer to be modified
	// concurrently with writes.
	Tee(io.Writer)
	// Unwrap returns the original proxied target.
	Unwrap() http.ResponseWriter
}

WriterProxy is a proxy around an http.ResponseWriter that allows you to hook into various parts of the response process.

func WrapWriter 

func WrapWriter(w http.ResponseWriter) WriterProxy

WrapWriter wraps an http.ResponseWriter into a proxy that allows you to hook into various parts of the response process.

Source Files

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