pull out of older repos

LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright © 2024 NAME HERE <EMAIL ADDRESS>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

err_404.go

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+package static
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func Err404(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "text/html")
+	fmt.Println("404: " + r.URL.Path)
+	w.WriteHeader(404)
+	w.Write([]byte("file not found."))
+}

example_static/robots.txt

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+# Your Site
+User-agent: Google-Extended
+Disallow: /
+
+User-agent: GPTBot
+Disallow: /

example_test.go

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+package static_test
+
+import (
+	"embed"
+	"fmt"
+	"io"
+	"net/http"
+	"net/http/httptest"
+
+	"git.bivouac.wiki/use/static"
+)
+
+//go:embed example_static
+var static_files embed.FS
+
+func ExampleStatic() {
+	s := static.NewStatic("example_static/", static_files)
+	mux := http.NewServeMux()
+	// for files outside a static directory:
+	mux.HandleFunc("/robots.txt", s.WrapStatic("/robots.txt", "robots.txt"))
+	// for an entire subdirectory:
+	mux.HandleFunc("/static/{filename}", s.StaticRoute)
+	w := httptest.NewRecorder()
+	ts := httptest.NewServer(mux)
+	ts.URL = "robots.txt"
+	ts.Start()
+	res := w.Result()
+	defer res.Body.Close()
+	data, err := io.ReadAll(res.Body)
+	if err != nil {
+		fmt.Errorf("expected error to be nil got %v", err)
+	}
+	fmt.Println(string(data))
+
+}

init.go

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+package static
+
+import "embed"
+
+type Static struct {
+	prefix string
+	FS     embed.FS
+}
+
+// NewStatic creates a new static wrapper (prefix should have trailing slash)
+func NewStatic(prefix string, fs embed.FS) Static {
+	// todo later: support embed.FS and io/fs.FS.
+	return Static{
+		prefix: prefix,
+		FS:     fs,
+	}
+}

middleware.go

@@ -1 +0,0 @@
-package static

static_route.go

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+package static
+
+import (
+	"net/http"
+	"strings"
+)
+
+func (s Static) StaticRoute(w http.ResponseWriter, r *http.Request) {
+	f, err := s.FS.ReadFile(s.prefix + r.PathValue("filename"))
+	if strings.HasSuffix(r.URL.Path, ".css") {
+		w.Header().Set("Content-Type", "text/css")
+	}
+	if err != nil {
+		Err404(w, r)
+		return
+	}
+	w.Write(f)
+}

wrap_static.go

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+package static
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func (s Static) WrapStatic(url string, truefile string) func(w http.ResponseWriter, r *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != url {
+			fmt.Println("404: " + r.URL.Path)
+			Err404(w, r)
+			return
+		}
+		f, err := s.FS.ReadFile(s.prefix + truefile)
+		if err != nil {
+			Err404(w, r)
+			return
+		}
+		w.Write(f)
+	}
+}