Initial commit

Author: tnir

.gitlab-ci.yml

@@ -0,0 +1,19 @@
+image: golang:1.8.6-alpine3.6
+
+stages:
+- test
+- deploy
+
+format-test:
+  stage: test
+  script:
+  - go fmt
+  - go vet
+  - go test
+
+deploy:
+  image: google/cloud-sdk:183.0.0
+  stage: deploy
+  script:
+  - gcloud app deploy --no-promote
+  when: manual

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2018 Takuya Noguchi
+
+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.

app.yaml

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+runtime: go
+api_version: go1.8
+
+handlers:
+- url: /.*
+  script: _go_app
+  secure: always

redirect.go

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+package redirect
+
+import (
+	"net/http"
+	"strings"
+)
+
+const (
+	domain = "https://docs.djangoproject.com/ja/2.0/"
+	prefix = "/en/latest/"
+	suffix = ".html"
+)
+
+func mapUrl(s string) (r string) {
+	if strings.HasSuffix(s, suffix) {
+		s = strings.TrimSuffix(s, suffix) + "/"
+	}
+
+	r = domain
+	if strings.HasPrefix(s, prefix) {
+		r += strings.TrimPrefix(s, prefix)
+	}
+
+	return r
+}
+
+func redirect(w http.ResponseWriter, r *http.Request) {
+	var s = mapUrl(r.URL.Path)
+
+	http.Redirect(w, r, s, 301)
+}
+
+func init() {
+	http.HandleFunc("/", redirect)
+}

redirect_test.go

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+package redirect
+
+import (
+	"testing"
+)
+
+func TestMapUrl(t *testing.T) {
+	m := map[string]string{
+		"":                         "https://docs.djangoproject.com/ja/2.0/",
+		"/":                        "https://docs.djangoproject.com/ja/2.0/",
+		"/favicon.ico":             "https://docs.djangoproject.com/ja/2.0/",
+		"/en/latest/faq/":          "https://docs.djangoproject.com/ja/2.0/faq/",
+		"/ja/latest/faq/":          "https://docs.djangoproject.com/ja/2.0/",
+		"/en/latest/contents.html": "https://docs.djangoproject.com/ja/2.0/contents/",
+	}
+
+	for k, v := range m {
+		if r := mapUrl(k); r != v {
+			t.Errorf("mapUrl(%q) is expected: %q, but actually %q", k, v, r)
+		}
+	}
+}