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route.go
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route.go
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package NanoRouter
import (
"fmt"
"net/http"
"regexp"
"strings"
)
//Stores the path and the handler
type Route struct {
method string
Path string
handler func(w http.ResponseWriter, req *http.Request, vars map[string]string)
}
//Matches the url against its own path, returns true when there is a match
func (r *Route) match(req *http.Request) bool {
if !r.matchURL(req.URL.String()) {
return false
}
//See if http method matches the route
if req.Method != r.method {
return false
}
return true
}
func (r *Route) matchURL(rawURL string) bool {
url := strings.Split(rawURL, "/")
path := strings.Split(r.Path, "/")
reg, _ := regexp.Compile(":[a-zA-Z0-9]")
for i, c := range url {
if len(url) != len(path) {
return false
}
if c != path[i] && !(reg.MatchString(path[i])) {
return false
}
}
return true
}
//Handle executes the handler function attached to this route
func (r *Route) Handle(w http.ResponseWriter, req *http.Request) {
fmt.Printf("%v", r.handler)
r.handler(w, req, r.parseVars(req))
}
func (r *Route) parseVars(req *http.Request) map[string]string {
vars := make(map[string]string)
for k, v := range req.URL.Query() {
vars[k] = v[0]
}
reg := regexp.MustCompile(":[a-zA-Z0-9]")
url := strings.Split(req.URL.String(), "/")
path := strings.Split(r.Path, "/")
for i, p := range path {
if reg.MatchString(p) {
vars[p[1:len(p)]] = url[i]
}
}
return vars
}