Add license.

* Use embedded data sources
* Optionally listen on a Unix domain socket
* Server htmx and CSS from remote CDNs.

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
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+GNU General Public License for most of our software; it applies also to
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+your programs, too.
+
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+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -6,16 +6,23 @@ Match patterns and solve anagrams - handy for crossword fanatics.
 
 ```bash
 cd standalone
-go run main.go
+go run main.go --listen :3000
 ```
 
-## Cloud Function
+## Copyright
 
-To test using the Cloud Functions Framework:
+Anagram and Word Search Server
+Copyright (C) 2024 Raymond Miller <ray@1729.org.uk>
 
-```bash
+This program is free software: you can redistribute it and/or modify
-env FUNCTION_TARGET=WordSearch WORDLIST_BUCKET=word-search-1729-assets \
+it under the terms of the GNU General Public License as published by
-  WORDLIST_PATH=data/wordlist.txt LOCAL_ONLY=true go run ./cmd/fn-framework-test/main.go
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
 
-curl 'http://localhost:8080?mode=anagrams&pattern=idea'
+This program is distributed in the hope that it will be useful,
-```
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.

anagram/anagram.go

@@ -8,18 +8,13 @@ import (
 	"github.com/ray1729/wordsearch/util"
 )
 
-type DB interface {
+type DB map[string][]string
-	FindAnagrams(s string) []string
+
-	Add(s string)
+func New() DB {
+	return make(DB)
 }
 
-type HashDBImpl map[string][]string
+func (db DB) Add(s string) {
-
-func New() HashDBImpl {
-	return make(HashDBImpl)
-}
-
-func (db HashDBImpl) Add(s string) {
 	k := toKey(s)
 	db[k] = append(db[k], s)
 }
@@ -37,12 +32,9 @@ func Load(r io.Reader) (DB, error) {
 		db.Add(sc.Text())
 
 	}
-	if err := sc.Err(); err != nil {
+	return db, sc.Err()
-		return nil, err
-	}
-	return db, nil
 }
 
-func (d HashDBImpl) FindAnagrams(s string) []string {
+func (d DB) FindAnagrams(s string) []string {
 	return d[toKey(s)]
 }

cloudfn.go

@@ -1,147 +0,0 @@
-package wordsearch
-
-import (
-	"bufio"
-	"context"
-	"fmt"
-	"log"
-	"net/http"
-	"os"
-	"sort"
-	"text/template"
-
-	"cloud.google.com/go/storage"
-	"github.com/GoogleCloudPlatform/functions-framework-go/functions"
-	"github.com/ray1729/wordsearch/anagram"
-	"github.com/ray1729/wordsearch/match"
-	"github.com/rs/cors"
-)
-
-var anagramDB anagram.DB
-var matchDB match.DB
-
-func initializeDB(ctx context.Context, bucketName, objectName string) error {
-	client, err := storage.NewClient(ctx)
-	if err != nil {
-		return fmt.Errorf("error creating storage client: %v", err)
-	}
-	r, err := client.Bucket(bucketName).Object(objectName).NewReader(ctx)
-	if err != nil {
-		return fmt.Errorf("error opening gs://%s/%s: %v", bucketName, objectName, err)
-	}
-	defer r.Close()
-	anagramDB = anagram.New()
-	matchDB = match.New()
-	sc := bufio.NewScanner(r)
-	for sc.Scan() {
-		s := sc.Text()
-		anagramDB.Add(s)
-		matchDB.Add(s)
-	}
-	if err := sc.Err(); err != nil {
-		return fmt.Errorf("error reading gs://%s/%s: %v", bucketName, objectName, err)
-	}
-	return nil
-}
-
-func init() {
-	ctx := context.Background()
-	bucketName := mustGetenv("WORDLIST_BUCKET")
-	objectName := mustGetenv("WORDLIST_PATH")
-	log.Println("Initializing databases")
-	if err := initializeDB(ctx, bucketName, objectName); err != nil {
-		panic(err)
-	}
-	corsHandler := cors.New(cors.Options{
-		AllowedOrigins:   []string{"*"},
-		AllowedHeaders:   []string{"*"},
-		AllowedMethods:   []string{http.MethodPost},
-		AllowCredentials: false,
-		MaxAge:           3600,
-	})
-	log.Println("Registering HTTP function with the Functions Framework")
-	functions.HTTP("WordSearch", func(w http.ResponseWriter, r *http.Request) {
-		corsHandler.ServeHTTP(w, r, handleFormSubmission)
-	})
-}
-
-func mustGetenv(s string) string {
-	v := os.Getenv(s)
-	if len(v) == 0 {
-		panic(fmt.Sprintf("environment variable %s not set", s))
-	}
-	return v
-}
-
-func handleFormSubmission(w http.ResponseWriter, r *http.Request) {
-	if err := r.ParseForm(); err != nil {
-		log.Printf("error parsing form: %v", err)
-		http.Error(w, "error parsing form", http.StatusBadRequest)
-		return
-	}
-	mode := r.Form.Get("mode")
-	pattern := r.Form.Get("pattern")
-	if len(pattern) == 0 {
-		http.Error(w, "Missing pattern", http.StatusBadRequest)
-		return
-	}
-	switch mode {
-	case "match":
-		results := matchResults(matchDB, pattern)
-		renderTemplate(w, resultsTmpl, results)
-	case "anagrams":
-		results := anagramResults(anagramDB, pattern)
-		renderTemplate(w, resultsTmpl, results)
-	default:
-		log.Printf("invalid mode: %s", mode)
-		http.Error(w, fmt.Sprintf("Invalid mode: %s", mode), http.StatusBadRequest)
-	}
-}
-
-func anagramResults(db anagram.DB, pattern string) ResultParams {
-	var params ResultParams
-	params.Results = db.FindAnagrams(pattern)
-	if len(params.Results) > 0 {
-		params.Preamble = fmt.Sprintf("Anagrams of %q:", pattern)
-	} else {
-		params.Preamble = fmt.Sprintf("Found no anagrams of %q", pattern)
-	}
-	sort.Slice(params.Results, func(i, j int) bool { return params.Results[i] < params.Results[j] })
-	return params
-}
-
-func matchResults(db match.DB, pattern string) ResultParams {
-	var params ResultParams
-	params.Results = db.FindMatches(pattern)
-	if len(params.Results) > 0 {
-		params.Preamble = fmt.Sprintf("Matches for %q:", pattern)
-	} else {
-		params.Preamble = fmt.Sprintf("Found no matches for %q", pattern)
-	}
-	sort.Slice(params.Results, func(i, j int) bool { return params.Results[i] < params.Results[j] })
-	return params
-}
-
-func renderTemplate(w http.ResponseWriter, t *template.Template, params any) {
-	err := t.Execute(w, params)
-	if err != nil {
-		log.Printf("Error rendering template %s: %v", t.Name(), err)
-		http.Error(w, "Internal server error", http.StatusInternalServerError)
-	}
-}
-
-type ResultParams struct {
-	Preamble string
-	Results  []string
-}
-
-var resultsTmpl = template.Must(template.New("results").Parse(`
-{{ with .Preamble }}
-<p>{{ . }}</p>
-{{ end }}
-<ul>
-{{ range .Results }}
-  <li>{{.}}</li>
-{{ end }}
-</ul>
-`))

cmd/fn-framework-test/main.go

@@ -1,29 +0,0 @@
-package main
-
-import (
-	"log"
-	"os"
-
-	// Blank-import the function package so the init() runs
-	"github.com/GoogleCloudPlatform/functions-framework-go/funcframework"
-	_ "github.com/ray1729/wordsearch"
-)
-
-func main() {
-	// Use PORT environment variable, or default to 8080.
-	port := "8080"
-	if envPort := os.Getenv("PORT"); envPort != "" {
-		port = envPort
-	}
-
-	// By default, listen on all interfaces. If testing locally, run with
-	// LOCAL_ONLY=true to avoid triggering firewall warnings and
-	// exposing the server outside of your own machine.
-	hostname := ""
-	if localOnly := os.Getenv("LOCAL_ONLY"); localOnly == "true" {
-		hostname = "127.0.0.1"
-	}
-	if err := funcframework.StartHostPort(hostname, port); err != nil {
-		log.Fatalf("funcframework.StartHostPort: %v\n", err)
-	}
-}

cmd/generate-data/main.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"encoding/gob"
+	"flag"
+	"log"
+	"os"
+	"path/filepath"
+
+	"github.com/ray1729/wordsearch/anagram"
+	"github.com/ray1729/wordsearch/match"
+)
+
+var wordlist = flag.String("wordlist", "", "Path to wordlist")
+var dataDir = flag.String("data", "", "Path to output directory")
+
+func main() {
+	flag.Parse()
+	os.MkdirAll(*dataDir, 0755)
+	words, err := os.Open(*wordlist)
+	if err != nil {
+		log.Fatal(err)
+	}
+	anagramDB, err := anagram.Load(words)
+	if err != nil {
+		log.Fatal(err)
+	}
+	if err := writeData(*dataDir, "anagram.bin", anagramDB); err != nil {
+		log.Fatal(err)
+	}
+
+	words.Seek(0, 0)
+	matchDB, err := match.Load(words)
+	if err != nil {
+		log.Fatal(err)
+	}
+	if err := writeData(*dataDir, "match.bin", matchDB); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func writeData(dirName string, fileName string, data interface{}) error {
+	path := filepath.Join(dirName, fileName)
+	f, err := os.OpenFile(path, os.O_CREATE|os.O_RDWR|os.O_TRUNC, 0644)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	return gob.NewEncoder(f).Encode(data)
+}

deploy.sh

@@ -1,9 +0,0 @@
-#!/bin/bash
-
-set -e 
-
-V=$(git describe --tags)
-
-zip function.zip go.mod go.sum cloudfn.go match/match.go anagram/anagram.go util/util.go
-
-gsutil cp function.zip gs://word-search-1729-assets/cloudfn/${V}/

go.mod

@@ -2,44 +2,4 @@ module github.com/ray1729/wordsearch
 
 go 1.21.1
 
-require (
+require golang.org/x/text v0.14.0
-	cloud.google.com/go/storage v1.33.0
-	github.com/GoogleCloudPlatform/functions-framework-go v1.8.0
-	github.com/rs/cors v1.10.1
-	golang.org/x/text v0.13.0
-)
-
-require (
-	cloud.google.com/go v0.110.4 // indirect
-	cloud.google.com/go/compute v1.20.1 // indirect
-	cloud.google.com/go/compute/metadata v0.2.3 // indirect
-	cloud.google.com/go/functions v1.15.1 // indirect
-	cloud.google.com/go/iam v1.1.0 // indirect
-	github.com/cloudevents/sdk-go/v2 v2.14.0 // indirect
-	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
-	github.com/golang/protobuf v1.5.3 // indirect
-	github.com/google/go-cmp v0.5.9 // indirect
-	github.com/google/s2a-go v0.1.4 // indirect
-	github.com/google/uuid v1.3.0 // indirect
-	github.com/googleapis/enterprise-certificate-proxy v0.2.5 // indirect
-	github.com/googleapis/gax-go/v2 v2.12.0 // indirect
-	github.com/json-iterator/go v1.1.10 // indirect
-	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
-	github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742 // indirect
-	go.opencensus.io v0.24.0 // indirect
-	go.uber.org/atomic v1.4.0 // indirect
-	go.uber.org/multierr v1.1.0 // indirect
-	go.uber.org/zap v1.10.0 // indirect
-	golang.org/x/crypto v0.11.0 // indirect
-	golang.org/x/net v0.12.0 // indirect
-	golang.org/x/oauth2 v0.10.0 // indirect
-	golang.org/x/sys v0.10.0 // indirect
-	golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2 // indirect
-	google.golang.org/api v0.132.0 // indirect
-	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/genproto v0.0.0-20230706204954-ccb25ca9f130 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20230706204954-ccb25ca9f130 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20230711160842-782d3b101e98 // indirect
-	google.golang.org/grpc v1.56.2 // indirect
-	google.golang.org/protobuf v1.31.0 // indirect
-)

match/match.go

@@ -7,20 +7,15 @@ import (
 	"github.com/ray1729/wordsearch/util"
 )
 
-type DB interface {
+type DB struct {
-	FindMatches(s string) []string
-	Add(s string)
-}
-
-type PrefixTreeImpl struct {
 	Root *Node
 }
 
-func New() PrefixTreeImpl {
+func New() DB {
-	return PrefixTreeImpl{Root: &Node{}}
+	return DB{Root: &Node{}}
 }
 
-func (db PrefixTreeImpl) Add(s string) {
+func (db DB) Add(s string) {
 	xs := util.LowerCaseAlpha(s)
 	db.Root.add(xs, s)
 }
@@ -57,13 +52,10 @@ func Load(r io.Reader) (DB, error) {
 	for sc.Scan() {
 		db.Add(sc.Text())
 	}
-	if err := sc.Err(); err != nil {
+	return db, sc.Err()
-		return nil, err
-	}
-	return db, nil
 }
 
-func (db PrefixTreeImpl) FindMatches(s string) []string {
+func (db DB) FindMatches(s string) []string {
 	return db.Root.find(util.LowerCaseAlphaOrDot(s))
 }
 

standalone/assets/custom.css

@@ -1,13 +0,0 @@
-div.center {
-    text-align: center;
-}
-
-div#results {
-    height: 60dvh;
-}
-
-div#results > ul {
-    list-style-type: none;
-    overflow-y: auto;
-    height: 100%;
-}

standalone/assets/simple.css

@@ -1,685 +0,0 @@
-/* Global variables. */
-:root,
-::backdrop {
-  /* Set sans-serif & mono fonts */
-  --sans-font: -apple-system, BlinkMacSystemFont, "Avenir Next", Avenir,
-    "Nimbus Sans L", Roboto, "Noto Sans", "Segoe UI", Arial, Helvetica,
-    "Helvetica Neue", sans-serif;
-  --mono-font: Consolas, Menlo, Monaco, "Andale Mono", "Ubuntu Mono", monospace;
-  --standard-border-radius: 5px;
-
-  /* Default (light) theme */
-  --bg: #fff;
-  --accent-bg: #f5f7ff;
-  --text: #212121;
-  --text-light: #585858;
-  --border: #898EA4;
-  --accent: #0d47a1;
-  --code: #d81b60;
-  --preformatted: #444;
-  --marked: #ffdd33;
-  --disabled: #efefef;
-}
-
-/* Dark theme */
-@media (prefers-color-scheme: dark) {
-  :root,
-  ::backdrop {
-    color-scheme: dark;
-    --bg: #212121;
-    --accent-bg: #2b2b2b;
-    --text: #dcdcdc;
-    --text-light: #ababab;
-    --accent: #ffb300;
-    --code: #f06292;
-    --preformatted: #ccc;
-    --disabled: #111;
-  }
-  /* Add a bit of transparency so light media isn't so glaring in dark mode */
-  img,
-  video {
-    opacity: 0.8;
-  }
-}
-
-/* Reset box-sizing */
-*, *::before, *::after {
-  box-sizing: border-box;
-}
-
-/* Reset default appearance */
-textarea,
-select,
-input,
-progress {
-  appearance: none;
-  -webkit-appearance: none;
-  -moz-appearance: none;
-}
-
-html {
-  /* Set the font globally */
-  font-family: var(--sans-font);
-  scroll-behavior: smooth;
-}
-
-/* Make the body a nice central block */
-body {
-  color: var(--text);
-  background-color: var(--bg);
-  font-size: 1.15rem;
-  line-height: 1.5;
-  display: grid;
-  grid-template-columns: 1fr min(45rem, 90%) 1fr;
-  margin: 0;
-}
-body > * {
-  grid-column: 2;
-}
-
-/* Make the header bg full width, but the content inline with body */
-body > header {
-  background-color: var(--accent-bg);
-  border-bottom: 1px solid var(--border);
-  text-align: center;
-  padding: 0 0.5rem 2rem 0.5rem;
-  grid-column: 1 / -1;
-}
-
-body > header h1 {
-  max-width: 1200px;
-  margin: 1rem auto;
-}
-
-body > header p {
-  max-width: 40rem;
-  margin: 1rem auto;
-}
-
-/* Add a little padding to ensure spacing is correct between content and header > nav */
-main {
-  padding-top: 1.5rem;
-}
-
-body > footer {
-  margin-top: 4rem;
-  padding: 2rem 1rem 1.5rem 1rem;
-  color: var(--text-light);
-  font-size: 0.9rem;
-  text-align: center;
-  border-top: 1px solid var(--border);
-}
-
-/* Format headers */
-h1 {
-  font-size: 3rem;
-}
-
-h2 {
-  font-size: 2.6rem;
-  margin-top: 3rem;
-}
-
-h3 {
-  font-size: 2rem;
-  margin-top: 3rem;
-}
-
-h4 {
-  font-size: 1.44rem;
-}
-
-h5 {
-  font-size: 1.15rem;
-}
-
-h6 {
-  font-size: 0.96rem;
-}
-
-p {
-  margin: 1.5rem 0;
-}
-
-/* Prevent long strings from overflowing container */
-p, h1, h2, h3, h4, h5, h6 {
-  overflow-wrap: break-word;
-}
-
-/* Fix line height when title wraps */
-h1,
-h2,
-h3 {
-  line-height: 1.1;
-}
-
-/* Reduce header size on mobile */
-@media only screen and (max-width: 720px) {
-  h1 {
-    font-size: 2.5rem;
-  }
-
-  h2 {
-    font-size: 2.1rem;
-  }
-
-  h3 {
-    font-size: 1.75rem;
-  }
-
-  h4 {
-    font-size: 1.25rem;
-  }
-}
-
-/* Format links & buttons */
-a,
-a:visited {
-  color: var(--accent);
-}
-
-a:hover {
-  text-decoration: none;
-}
-
-button,
-.button,
-a.button, /* extra specificity to override a */
-input[type="submit"],
-input[type="reset"],
-input[type="button"],
-label[type="button"] {
-  border: 1px solid var(--accent);
-  background-color: var(--accent);
-  color: var(--bg);
-  padding: 0.5rem 0.9rem;
-  text-decoration: none;
-  line-height: normal;
-}
-
-.button[aria-disabled="true"], 
-input:disabled,
-textarea:disabled,
-select:disabled,
-button[disabled] {
-  cursor: not-allowed;
-  background-color: var(--disabled);
-  border-color: var(--disabled);
-  color: var(--text-light);
-}
-
-input[type="range"] {
-  padding: 0;
-}
-
-/* Set the cursor to '?' on an abbreviation and style the abbreviation to show that there is more information underneath */
-abbr[title] {
-  cursor: help;
-  text-decoration-line: underline;
-  text-decoration-style: dotted;
-}
-
-button:enabled:hover,
-.button:not([aria-disabled="true"]):hover,
-input[type="submit"]:enabled:hover,
-input[type="reset"]:enabled:hover,
-input[type="button"]:enabled:hover,
-label[type="button"]:hover {
-  filter: brightness(1.4);
-  cursor: pointer;
-}
-
-.button:focus-visible,
-button:focus-visible:where(:enabled),
-input:enabled:focus-visible:where(
-  [type="submit"],
-  [type="reset"],
-  [type="button"]
-) {
-  outline: 2px solid var(--accent);
-  outline-offset: 1px;
-}
-
-/* Format navigation */
-header > nav {
-  font-size: 1rem;
-  line-height: 2;
-  padding: 1rem 0 0 0;
-}
-
-/* Use flexbox to allow items to wrap, as needed */
-header > nav ul,
-header > nav ol {
-  align-content: space-around;
-  align-items: center;
-  display: flex;
-  flex-direction: row;
-  flex-wrap: wrap;
-  justify-content: center;
-  list-style-type: none;
-  margin: 0;
-  padding: 0;
-}
-
-/* List items are inline elements, make them behave more like blocks */
-header > nav ul li,
-header > nav ol li {
-  display: inline-block;
-}
-
-header > nav a,
-header > nav a:visited {
-  margin: 0 0.5rem 1rem 0.5rem;
-  border: 1px solid var(--border);
-  border-radius: var(--standard-border-radius);
-  color: var(--text);
-  display: inline-block;
-  padding: 0.1rem 1rem;
-  text-decoration: none;
-}
-
-header > nav a:hover,
-header > nav a.current,
-header > nav a[aria-current="page"] {
-  border-color: var(--accent);
-  color: var(--accent);
-  cursor: pointer;
-}
-
-/* Reduce nav side on mobile */
-@media only screen and (max-width: 720px) {
-  header > nav a {
-    border: none;
-    padding: 0;
-    text-decoration: underline;
-    line-height: 1;
-  }
-}
-
-/* Consolidate box styling */
-aside, details, pre, progress {
-  background-color: var(--accent-bg);
-  border: 1px solid var(--border);
-  border-radius: var(--standard-border-radius);
-  margin-bottom: 1rem;
-}
-
-aside {
-  font-size: 1rem;
-  width: 30%;
-  padding: 0 15px;
-  margin-inline-start: 15px;
-  float: right;
-}
-*[dir="rtl"] aside {
-  float: left;
-}
-
-/* Make aside full-width on mobile */
-@media only screen and (max-width: 720px) {
-  aside {
-    width: 100%;
-    float: none;
-    margin-inline-start: 0;
-  }
-}
-
-article, fieldset, dialog {
-  border: 1px solid var(--border);
-  padding: 1rem;
-  border-radius: var(--standard-border-radius);
-  margin-bottom: 1rem;
-}
-
-article h2:first-child,
-section h2:first-child {
-  margin-top: 1rem;
-}
-
-section {
-  border-top: 1px solid var(--border);
-  border-bottom: 1px solid var(--border);
-  padding: 2rem 1rem;
-  margin: 3rem 0;
-}
-
-/* Don't double separators when chaining sections */
-section + section,
-section:first-child {
-  border-top: 0;
-  padding-top: 0;
-}
-
-section:last-child {
-  border-bottom: 0;
-  padding-bottom: 0;
-}
-
-details {
-  padding: 0.7rem 1rem;
-}
-
-summary {
-  cursor: pointer;
-  font-weight: bold;
-  padding: 0.7rem 1rem;
-  margin: -0.7rem -1rem;
-  word-break: break-all;
-}
-
-details[open] > summary + * {
-  margin-top: 0;
-}
-
-details[open] > summary {
-  margin-bottom: 0.5rem;
-}
-
-details[open] > :last-child {
-  margin-bottom: 0;
-}
-
-/* Format tables */
-table {
-  border-collapse: collapse;
-  margin: 1.5rem 0;
-}
-
-td,
-th {
-  border: 1px solid var(--border);
-  text-align: start;
-  padding: 0.5rem;
-}
-
-th {
-  background-color: var(--accent-bg);
-  font-weight: bold;
-}
-
-tr:nth-child(even) {
-  /* Set every other cell slightly darker. Improves readability. */
-  background-color: var(--accent-bg);
-}
-
-table caption {
-  font-weight: bold;
-  margin-bottom: 0.5rem;
-}
-
-/* Format forms */
-textarea,
-select,
-input,
-button,
-.button {
-  font-size: inherit;
-  font-family: inherit;
-  padding: 0.5rem;
-  margin-bottom: 0.5rem;
-  border-radius: var(--standard-border-radius);
-  box-shadow: none;
-  max-width: 100%;
-  display: inline-block;
-}
-textarea,
-select,
-input {
-  color: var(--text);
-  background-color: var(--bg);
-  border: 1px solid var(--border);
-}
-label {
-  display: block;
-}
-textarea:not([cols]) {
-  width: 100%;
-}
-
-/* Add arrow to drop-down */
-select:not([multiple]) {
-  background-image: linear-gradient(45deg, transparent 49%, var(--text) 51%),
-    linear-gradient(135deg, var(--text) 51%, transparent 49%);
-  background-position: calc(100% - 15px), calc(100% - 10px);
-  background-size: 5px 5px, 5px 5px;
-  background-repeat: no-repeat;
-  padding-inline-end: 25px;
-}
-*[dir="rtl"] select:not([multiple]) {
-  background-position: 10px, 15px;
-}
-
-/* checkbox and radio button style */
-input[type="checkbox"],
-input[type="radio"] {
-  vertical-align: middle;
-  position: relative;
-  width: min-content;
-}
-
-input[type="checkbox"] + label,
-input[type="radio"] + label {
-  display: inline-block;
-}
-
-input[type="radio"] {
-  border-radius: 100%;
-}
-
-input[type="checkbox"]:checked,
-input[type="radio"]:checked {
-  background-color: var(--accent);
-}
-
-input[type="checkbox"]:checked::after {
-  /* Creates a rectangle with colored right and bottom borders which is rotated to look like a check mark */
-  content: " ";
-  width: 0.18em;
-  height: 0.32em;
-  border-radius: 0;
-  position: absolute;
-  top: 0.05em;
-  left: 0.17em;
-  background-color: transparent;
-  border-right: solid var(--bg) 0.08em;
-  border-bottom: solid var(--bg) 0.08em;
-  font-size: 1.8em;
-  transform: rotate(45deg);
-}
-input[type="radio"]:checked::after {
-  /* creates a colored circle for the checked radio button  */
-  content: " ";
-  width: 0.25em;
-  height: 0.25em;
-  border-radius: 100%;
-  position: absolute;
-  top: 0.125em;
-  background-color: var(--bg);
-  left: 0.125em;
-  font-size: 32px;
-}
-
-/* Makes input fields wider on smaller screens */
-@media only screen and (max-width: 720px) {
-  textarea,
-  select,
-  input {
-    width: 100%;
-  }
-}
-
-/* Set a height for color input */
-input[type="color"] {
-  height: 2.5rem;
-  padding:  0.2rem;
-}
-
-/* do not show border around file selector button */
-input[type="file"] {
-  border: 0;
-}
-
-/* Misc body elements */
-hr {
-  border: none;
-  height: 1px;
-  background: var(--border);
-  margin: 1rem auto;
-}
-
-mark {
-  padding: 2px 5px;
-  border-radius: var(--standard-border-radius);
-  background-color: var(--marked);
-  color: black;
-}
-
-mark a {
-  color: #0d47a1;
-}
-
-img,
-video {
-  max-width: 100%;
-  height: auto;
-  border-radius: var(--standard-border-radius);
-}
-
-figure {
-  margin: 0;
-  display: block;
-  overflow-x: auto;
-}
-
-figcaption {
-  text-align: center;
-  font-size: 0.9rem;
-  color: var(--text-light);
-  margin-bottom: 1rem;
-}
-
-blockquote {
-  margin-inline-start: 2rem;
-  margin-inline-end: 0;
-  margin-block: 2rem;
-  padding: 0.4rem 0.8rem;
-  border-inline-start: 0.35rem solid var(--accent);
-  color: var(--text-light);
-  font-style: italic;
-}
-
-cite {
-  font-size: 0.9rem;
-  color: var(--text-light);
-  font-style: normal;
-}
-
-dt {
-    color: var(--text-light);
-}
-
-/* Use mono font for code elements */
-code,
-pre,
-pre span,
-kbd,
-samp {
-  font-family: var(--mono-font);
-  color: var(--code);
-}
-
-kbd {
-  color: var(--preformatted);
-  border: 1px solid var(--preformatted);
-  border-bottom: 3px solid var(--preformatted);
-  border-radius: var(--standard-border-radius);
-  padding: 0.1rem 0.4rem;
-}
-
-pre {
-  padding: 1rem 1.4rem;
-  max-width: 100%;
-  overflow: auto;
-  color: var(--preformatted);
-}
-
-/* Fix embedded code within pre */
-pre code {
-  color: var(--preformatted);
-  background: none;
-  margin: 0;
-  padding: 0;
-}
-
-/* Progress bars */
-/* Declarations are repeated because you */
-/* cannot combine vendor-specific selectors */
-progress {
-  width: 100%;
-}
-
-progress:indeterminate {
-  background-color: var(--accent-bg);
-}
-
-progress::-webkit-progress-bar {
-  border-radius: var(--standard-border-radius);
-  background-color: var(--accent-bg);
-}
-
-progress::-webkit-progress-value {
-  border-radius: var(--standard-border-radius);
-  background-color: var(--accent);
-}
-
-progress::-moz-progress-bar {
-  border-radius: var(--standard-border-radius);
-  background-color: var(--accent);
-  transition-property: width;
-  transition-duration: 0.3s;
-}
-
-progress:indeterminate::-moz-progress-bar {
-  background-color: var(--accent-bg);
-}
-
-dialog {
-  max-width: 40rem;
-  margin: auto;
-}
-
-dialog::backdrop {
-  background-color: var(--bg);
-  opacity: 0.8;
-}
-
-@media only screen and (max-width: 720px) {
-  dialog {
-    max-width: 100%;
-    margin: auto 1em;
-  }
-}
-
-/* Superscript & Subscript */
-/* Prevent scripts from affecting line-height. */
-sup, sub {
-  vertical-align: baseline;
-  position: relative;
-}
-
-sup {
-  top: -0.4em;
-}
-
-sub { 
-  top: 0.3em; 
-}
-
-/* Classes for notices */
-.notice {
-  background: var(--accent-bg);
-  border: 2px solid var(--border);
-  border-radius: 5px;
-  padding: 1.5rem;
-  margin: 2rem 0;
-}

standalone/main.go

@@ -1,43 +1,72 @@
 package main
 
 import (
-	"bufio"
+	"embed"
+	"encoding/gob"
+	"flag"
 	"log"
+	"net"
 	"net/http"
-	"os"
+	"strings"
 
 	"github.com/ray1729/wordsearch/anagram"
 	"github.com/ray1729/wordsearch/match"
 	"github.com/ray1729/wordsearch/standalone/server"
 )
 
-var matchDB match.DB
+//go:embed data/*
+var fs embed.FS
+
 var anagramDB anagram.DB
+var matchDB match.DB
+
+func initializeDB() error {
+	anagrams, err := fs.Open("data/anagram.bin")
+	if err != nil {
+		return err
+	}
+	defer anagrams.Close()
+	if err := gob.NewDecoder(anagrams).Decode(&anagramDB); err != nil {
+		return err
+	}
+	matches, err := fs.Open("data/match.bin")
+	if err != nil {
+		return err
+	}
+	defer matches.Close()
+	if err := gob.NewDecoder(matches).Decode(&matchDB); err != nil {
+		return err
+	}
+	return nil
+}
 
 func init() {
-	f, err := os.Open("wordlist.txt")
+	if err := initializeDB(); err != nil {
-	if err != nil {
+		log.Fatalf("error initializing databases: %v", err)
-		log.Fatalf("Error opening word list: %v", err)
-	}
-	defer f.Close()
-	matchDB = match.New()
-	anagramDB = anagram.New()
-	sc := bufio.NewScanner(f)
-	for sc.Scan() {
-		s := sc.Text()
-		matchDB.Add(s)
-		anagramDB.Add(s)
-	}
-	if err := sc.Err(); err != nil {
-		log.Fatalf("Error loading databases: %v", err)
 	}
 }
 
 func main() {
-	s := server.New("./assets", matchDB, anagramDB)
+	var listenAddr = flag.String("listen", ":8000", "Address or port to listen on, prefix with unix: to listen on a Unix domain socket")
-	address := ":8000"
+	flag.Parse()
-	log.Printf("Listening on %s", address)
+
-	if err := http.ListenAndServe(address, s); err != nil {
+	server := http.Server{
+		Handler: server.New(matchDB, anagramDB),
+	}
+
+	var listener net.Listener
+	var err error
+	if strings.HasPrefix(*listenAddr, "unix:") {
+		listener, err = net.Listen("unix", strings.TrimPrefix(*listenAddr, "unix:"))
+	} else {
+		listener, err = net.Listen("tcp", *listenAddr)
+	}
+	if err != nil {
+		log.Fatalf("Error listening on %s: %v", *listenAddr, err)
+	}
+	log.Printf("Listening on %s", *listenAddr)
+
+	if err := server.Serve(listener); err != nil {
 		log.Fatal(err)
 	}
 }

standalone/server/server.go

@@ -11,9 +11,8 @@ import (
 	"github.com/ray1729/wordsearch/match"
 )
 
-func New(assetsPath string, matchDB match.DB, anagramDB anagram.DB) http.Handler {
+func New(matchDB match.DB, anagramDB anagram.DB) http.Handler {
 	mux := http.NewServeMux()
-	mux.Handle("/assets/", http.StripPrefix("/assets/", http.FileServer(http.Dir(assetsPath))))
 	mux.HandleFunc("/search", searchHandler(matchDB, anagramDB))
 	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
 		renderTemplate(w, home, nil)

standalone/server/templates.go

@@ -8,9 +8,23 @@ var home = template.Must(template.New("home").Parse(`
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-	<link rel="stylesheet" href="/assets/simple.css">
+    <link rel="stylesheet" href="https://cdn.simplecss.org/simple.min.css">
-	<link rel="stylesheet" href="/assets/custom.css">
+	<script src="https://unpkg.com/htmx.org@1.9.12"></script>
-	<script src="/assets/htmx.min.js"></script>
+    <style>
+		div.center {
+			text-align: center;
+		}
+
+		div#results {
+			height: 60dvh;
+		}
+
+		div#results > ul {
+			list-style-type: none;
+			overflow-y: auto;
+			height: 100%;
+		}
+    </style>
     <title>Anagram and Word Search</title>
 </head>
 <body>
@@ -19,12 +33,12 @@ var home = template.Must(template.New("home").Parse(`
   </header>
 
   <main>
-	<form action="/search" method="post" hx-boost="true" hx-target="#results">
+	<form action="/search" method="post" hx-boost="true" hx-target="#results" hx-push-url="false">
 	  <div class="center">
-	    <input type="text" name="pattern" required></input>
+	    <input id="pattern" type="text" name="pattern" required autofocus></input>
 	    <button name="mode" value="match">Match</button>
 	    <button name="mode" value="anagrams">Anagrams</button>
-		<button type="reset">Clear</button>
+		<button type="reset" onclick="getfocus()">Clear</button>
 	  </div>
     </form>
 	<div id="results">
@@ -32,6 +46,11 @@ var home = template.Must(template.New("home").Parse(`
   </main>
 
 </body>
+<script>
+function getfocus() {
+  document.getElementById("pattern").focus();
+}
+</script>
 </html>
 `))
 
@@ -46,7 +65,9 @@ var results = template.Must(template.New("results").Parse(`
 {{ end }}
 <ul>
 {{ range .Results }}
-  <li>{{.}}</li>
+  <li>
+    <a href="https://dicoweb.gnu.org.ua/?q={{.}}&db=gcide&define=1" target="defn">{{.}}</a>
+  </li>
 {{ end }}
 </ul>
 `))