package xmux

import (

"errors"

"net/http"

"reflect"

"runtime"

"strings"

"sync"

)

const (

zero = byte('0')

one = byte('1')

lsb = byte('[') // left square brackets

rsb = byte(']') // right square brackets

space = byte(' ')

)

var uint8arr [8]uint8

// ErrBadStringFormat represents a error of input string's format is illegal .

var ErrBadStringFormat = errors.New("bad string format")

// ErrEmptyString represents a error of empty input string.

var ErrEmptyString = errors.New("empty string")

var ErrTypeUnsupport = errors.New("data type is unsupported")

func init() {

// for _, value := range os.Environ() {

// if strings.Contains(value, "GOEXPERIMENT") {

// fmt.Println(value)

// }

// }

uint8arr[0] = 128

uint8arr[1] = 64

uint8arr[2] = 32

uint8arr[3] = 16

uint8arr[4] = 8

uint8arr[5] = 4

uint8arr[6] = 2

uint8arr[7] = 1

}

// 保存url里面的参数

type params map[string]string // url 参数对应的值

var allparams map[string]params // 保存的url 参数

var paramsLocker sync.RWMutex

func init() {

allparams = make(map[string]params)

paramsLocker = sync.RWMutex{}

}

func Var(r *http.Request) params {

return getParams(r.URL.Path)

}

func getParams(key string) params {

paramsLocker.RLock()

defer paramsLocker.RUnlock()

return allparams[key]

}

func setParams(key string, params params) {

paramsLocker.Lock()

allparams[key] = params

paramsLocker.Unlock()

}

// router.go 中添加

// PageKeyFuncMap 返回 pagekey -> []funcName 的映射

func (r *router) PageKeyFuncMap() map[string][]string {

result := make(map[string][]string)

// 遍历所有精确匹配路由

for _, route := range r.urlRoute {

funcName := getFuncName(route.handle)

for pk := range route.pagekeys {

result[pk] = append(result[pk], funcName)

}

}

// 遍历所有正则匹配路由

for _, route := range r.urlTpl {

funcName := getFuncName(route.handle)

for pk := range route.pagekeys {

result[pk] = append(result[pk], funcName)

}

}

return result

}

// 辅助函数：从 handle 提取 funcName

func getFuncName(handle http.Handler) string {

name := runtime.FuncForPC(reflect.ValueOf(handle).Pointer()).Name()

n := strings.LastIndex(name, ".")

if n >= 0 {

return name[n+1:]

}

return name

}