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63 lines
1.6 KiB
63 lines
1.6 KiB
package middleware
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import (
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"fmt"
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"net/http"
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"github.com/go-chi/chi"
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)
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// StripSlashes is a middleware that will match request paths with a trailing
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// slash, strip it from the path and continue routing through the mux, if a route
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// matches, then it will serve the handler.
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func StripSlashes(next http.Handler) http.Handler {
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fn := func(w http.ResponseWriter, r *http.Request) {
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var path string
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rctx := chi.RouteContext(r.Context())
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if rctx != nil && rctx.RoutePath != "" {
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path = rctx.RoutePath
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} else {
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path = r.URL.Path
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}
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if len(path) > 1 && path[len(path)-1] == '/' {
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newPath := path[:len(path)-1]
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if rctx == nil {
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r.URL.Path = newPath
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} else {
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rctx.RoutePath = newPath
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}
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}
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next.ServeHTTP(w, r)
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}
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return http.HandlerFunc(fn)
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}
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// RedirectSlashes is a middleware that will match request paths with a trailing
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// slash and redirect to the same path, less the trailing slash.
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//
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// NOTE: RedirectSlashes middleware is *incompatible* with http.FileServer,
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// see https://github.com/go-chi/chi/issues/343
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func RedirectSlashes(next http.Handler) http.Handler {
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fn := func(w http.ResponseWriter, r *http.Request) {
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var path string
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rctx := chi.RouteContext(r.Context())
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if rctx != nil && rctx.RoutePath != "" {
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path = rctx.RoutePath
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} else {
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path = r.URL.Path
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}
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if len(path) > 1 && path[len(path)-1] == '/' {
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if r.URL.RawQuery != "" {
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path = fmt.Sprintf("%s?%s", path[:len(path)-1], r.URL.RawQuery)
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} else {
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path = path[:len(path)-1]
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}
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redirectUrl := fmt.Sprintf("//%s%s", r.Host, path)
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http.Redirect(w, r, redirectUrl, 301)
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return
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}
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next.ServeHTTP(w, r)
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}
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return http.HandlerFunc(fn)
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}
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