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parse.go
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/
parse.go
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// Copyright 2022 anoweb Author. All Rights Reserved.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package router
import (
"fmt"
"regexp"
"github.com/go-the-way/anoweb/context"
"github.com/go-the-way/anoweb/util"
)
type (
// SimpleM type define map[string]*Simple
SimpleM = map[string]*Simple
// DynamicM type define map[string]*Simple
DynamicM = map[string]map[string]*Dynamic
// ParsedRouter defines parsed router
ParsedRouter struct {
// Simples routers
Simples SimpleM
// Dynamics routers K<Method> V< K<Pattern> V<Simple> >
Dynamics DynamicM
}
)
// Handler found simple or dynamic handler
func (pr *ParsedRouter) Handler(ctx *context.Context) func(ctx *context.Context) {
simple := pr.simple(ctx)
if simple != nil {
return simple
}
return pr.dynamic(ctx)
}
func (pr *ParsedRouter) simple(ctx *context.Context) func(ctx *context.Context) {
if len(pr.Simples) <= 0 {
return nil
}
routeKey := fmt.Sprintf("%s:%s", ctx.Request.Method, util.ReBuildPath(ctx.Request.URL.Path))
if simple, have := pr.Simples[routeKey]; have {
return simple.Handler
}
return nil
}
func (pr *ParsedRouter) dynamic(ctx *context.Context) func(ctx *context.Context) {
if len(pr.Dynamics) <= 0 {
return nil
}
if mp, have := pr.Dynamics[ctx.Request.Method]; have {
for k, v := range mp {
re := regexp.MustCompile(k)
reqPath := util.ReBuildPath(ctx.Request.URL.Path)
finds := re.FindAllStringSubmatch(reqPath, -1)
if len(finds) > 0 {
subFinds := finds[0]
if len(subFinds) == len(v.Params)+1 {
paramsMap := make(map[string][]string, len(v.Params))
for i, f := range subFinds[1:] {
paramsMap[v.Params[i]] = []string{f}
}
ctx.SetParamMap(paramsMap, false)
return v.Handler
}
}
}
}
return nil
}