Clean up the scripts a bit (...)

- Move the Go files into script/ instead of random places
- Rewrite check-contrib.sh into check-authors.go and check-copyright.go
- Clean up build.sh a little bit

script/authors.go

@@ -0,0 +1,60 @@
+// Copyright (C) 2015 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+// +build ignore
+
+// Generates the list of contributors in gui/index.html based on contents of
+// AUTHORS.
+
+package main
+
+import (
+	"io/ioutil"
+	"log"
+	"os"
+	"regexp"
+	"sort"
+	"strings"
+)
+
+const htmlFile = "gui/syncthing/core/aboutModalView.html"
+
+func main() {
+	bs := readAll("AUTHORS")
+	lines := strings.Split(string(bs), "\n")
+	nameRe := regexp.MustCompile(`(.+?)\s+<`)
+	authors := make([]string, 0, len(lines))
+	for _, line := range lines {
+		if m := nameRe.FindStringSubmatch(line); len(m) == 2 {
+			authors = append(authors, "        <li class=\"auto-generated\">"+m[1]+"</li>")
+		}
+	}
+	sort.Strings(authors)
+	replacement := strings.Join(authors, "\n")
+
+	authorsRe := regexp.MustCompile(`(?s)id="contributor-list">.*?</ul>`)
+	bs = readAll(htmlFile)
+	bs = authorsRe.ReplaceAll(bs, []byte("id=\"contributor-list\">\n"+replacement+"\n      </ul>"))
+
+	if err := ioutil.WriteFile(htmlFile, bs, 0644); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func readAll(path string) []byte {
+	fd, err := os.Open(path)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer fd.Close()
+
+	bs, err := ioutil.ReadAll(fd)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	return bs
+}