add opensearch metadata

fc20fe02 · ale · e1483b4e · fc20fe02 · fc20fe02 · fc20fe02
Commit fc20fe02 authored 10 years ago by ale
--- a/htdocs/templates/_head.html
+++ b/htdocs/templates/_head.html
 <!DOCTYPE html>
 <html lang="en">
-  <head>
+  <head profile="http://a9.com/-/spec/opensearch/1.1/">
    <title>LIBER</title>
    <meta charset="utf-8">
    <link rel="shortcut icon" href="/static/favicon.ico">
    <link rel="stylesheet" href="/static/css/bootstrap.min.css">
    <link rel="stylesheet" href="/static/css/liber.css">
+    <link rel="search"
+          type="application/opensearchdescription+xml" 
+          href="/opensearch.xml"
+          title="Book search">
  </head>

  <body>

--- a/htdocs/templates/index.html
+++ b/htdocs/templates/index.html
 <!DOCTYPE html>
 <html lang="en">
-  <head>
+  <head profile="http://a9.com/-/spec/opensearch/1.1/">
    <title>LIBER</title>
-
+    <meta charset="utf-8">
    <link rel="shortcut icon" href="/static/favicon.ico">
    <link rel="stylesheet" href="/static/css/bootstrap.min.css">
    <link rel="stylesheet" href="/static/css/home.css">
+    <link rel="search"
+          type="application/opensearchdescription+xml" 
+          href="/opensearch.xml"
+          title="Book search">
  </head>

  <body>

--- a/htdocs/templates/opensearch_xml.html
+++ b/htdocs/templates/opensearch_xml.html
+<?xml version="1.0" encoding="UTF-8"?>
+<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">
+  <ShortName>Book Search</ShortName>
+  <Description>Search this e-book collection.</Description>
+  <Tags>epub books</Tags>
+  <Contact>ale@incal.net</Contact>
+  <Url type="application/rss+xml" 
+       template="{{.URL}}"/>
+  <OutputEncoding>UTF-8</OutputEncoding>
+  <InputEncoding>UTF-8</InputEncoding>
+</OpenSearchDescription>
--- a/web.go
+++ b/web.go
@@ -9,6 +9,7 @@ import (
 	"io"
 	"log"
 	"net/http"
+	"net/url"
 	"os/exec"
 	"path/filepath"
 	"strconv"
@@ -313,6 +314,28 @@ func render(templateName string, w http.ResponseWriter, ctx interface{}) {
 	io.Copy(w, &buf)
 }

+func fullURL(req *http.Request) *url.URL {
+	u := *req.URL
+	u.Host = req.Host
+	if req.TLS != nil || req.Header.Get("X-Forwarded-Proto") == "https" {
+		u.Scheme = "https"
+	} else {
+		u.Scheme = "http"
+	}
+	return &u
+}
+
+func handleOpenSearchXml(w http.ResponseWriter, req *http.Request) {
+	searchURL := fullURL(req)
+	searchURL.Path = "/search"
+	searchURL.RawQuery = "q={searchTerms}&pw={startPage}"
+	ctx := struct {
+		URL string
+	}{searchURL.String()}
+	w.Header().Set("Content-Type", "application/opensearchdescription+xml")
+	render("opensearch_xml.html", w, &ctx)
+}
+
 func NewHttpServer(db *Database, storage, cache *FileStorage, addr string) *http.Server {
 	var err error
 	tpl, err = template.New("liber").Funcs(template.FuncMap{
@@ -335,6 +358,7 @@ func NewHttpServer(db *Database, storage, cache *FileStorage, addr string) *http
 	r.Handle("/book/{id:[0-9]+}", uisrv.withBook(uisrv.handleShowBook))
 	r.Handle("/read/{id:[0-9]+}/{fid:[0-9]+}", uisrv.withFile(uisrv.handleReadBook))
 	r.Handle("/dl/{id:[0-9]+}/{fid:[0-9]+}", uisrv.withFile(uisrv.handleDownloadBook))
+	r.HandleFunc("/opensearch.xml", handleOpenSearchXml)
 	r.HandleFunc("/suggest", uisrv.handleAutocomplete)
 	r.HandleFunc("/search", uisrv.handleSearch)
 	r.HandleFunc("/", uisrv.handleHome)