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params.go
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params.go
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// SPDX-License-Identifier: MIT
package syntax
import (
"strconv"
"sync"
"github.com/issue9/mux/v6/params"
)
var paramsPool = &sync.Pool{
New: func() any { return &Params{Params: make([]Param, 0, 5)} },
}
// Params 路由参数
//
// 实现了 params.Params 接口
type Params struct {
Path string // 这是在 Segment.Match 中用到的路径信息。
Params []Param // 实际需要传递的参数
count int
}
type Param struct {
K, V string // 如果 K 为空,则表示该参数已经被删除。
}
func NewParams(path string) *Params {
ps := paramsPool.Get().(*Params)
ps.Path = path
ps.Params = ps.Params[:0]
ps.count = 0
return ps
}
func (p *Params) Destroy() {
if p != nil {
paramsPool.Put(p)
}
}
func (p *Params) Exists(key string) bool {
_, found := p.Get(key)
return found
}
func (p *Params) String(key string) (string, error) {
if v, found := p.Get(key); found {
return v, nil
}
return "", params.ErrParamNotExists
}
func (p *Params) MustString(key, def string) string {
if v, found := p.Get(key); found {
return v
}
return def
}
func (p *Params) Int(key string) (int64, error) {
if str, found := p.Get(key); found {
return strconv.ParseInt(str, 10, 64)
}
return 0, params.ErrParamNotExists
}
func (p *Params) MustInt(key string, def int64) int64 {
if str, found := p.Get(key); found {
if val, err := strconv.ParseInt(str, 10, 64); err == nil {
return val
}
}
return def
}
func (p *Params) Uint(key string) (uint64, error) {
if str, found := p.Get(key); found {
return strconv.ParseUint(str, 10, 64)
}
return 0, params.ErrParamNotExists
}
func (p *Params) MustUint(key string, def uint64) uint64 {
if str, found := p.Get(key); found {
if val, err := strconv.ParseUint(str, 10, 64); err == nil {
return val
}
}
return def
}
func (p *Params) Bool(key string) (bool, error) {
if str, found := p.Get(key); found {
return strconv.ParseBool(str)
}
return false, params.ErrParamNotExists
}
func (p *Params) MustBool(key string, def bool) bool {
if str, found := p.Get(key); found {
if val, err := strconv.ParseBool(str); err == nil {
return val
}
}
return def
}
func (p *Params) Float(key string) (float64, error) {
if str, found := p.Get(key); found {
return strconv.ParseFloat(str, 64)
}
return 0, params.ErrParamNotExists
}
func (p *Params) MustFloat(key string, def float64) float64 {
if str, found := p.Get(key); found {
if val, err := strconv.ParseFloat(str, 64); err == nil {
return val
}
}
return def
}
func (p *Params) Get(key string) (string, bool) {
if p == nil {
return "", false
}
for _, kv := range p.Params {
if kv.K == key {
return kv.V, true
}
}
return "", false
}
func (p *Params) Count() (cnt int) {
if p == nil {
return 0
}
return p.count
}
func (p *Params) Set(k, v string) {
deletedIndex := -1
for i, param := range p.Params {
if param.K == k {
p.Params[i].V = v
return
}
if param.K == "" && deletedIndex == -1 {
deletedIndex = i
}
}
p.count++
if deletedIndex != -1 {
p.Params[deletedIndex].K = k
p.Params[deletedIndex].V = v
} else {
p.Params = append(p.Params, Param{K: k, V: v})
}
}
func (p *Params) Delete(k string) {
if p == nil {
return
}
for i, pp := range p.Params {
if pp.K == k {
p.Params[i].K = ""
p.count--
return
}
}
}
func (p *Params) Range(f func(key, val string)) {
for _, param := range p.Params {
if param.K != "" {
f(param.K, param.V)
}
}
}