Bindata is optional and over-writable on restart (#354)

* Moved conf assets into options folder

* Dropped old bindata

* Started to integrate options bindata and accessors

* Do not enforce a builtin app.ini

* Replaced bindata calls with options

* Dropped bindata task from makefile, it's the generate task now

* Always embedd app.ini to provide sane config defaults

* Use sane defaults for the configuration

* Defined default value for SSH_KEYGEN_PATH

* Dropped "NEVER EVER MODIFY THIS FILE" header from app.ini

* Fixed new paths in latest test additions

* Drop bindata with make clean task

* Set more proper default values

modules/options/dynamic.go

@@ -0,0 +1,94 @@
+// +build !bindata
+
+// Copyright 2016 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package options
+
+import (
+	"fmt"
+	"io/ioutil"
+	"path"
+
+	"code.gitea.io/gitea/modules/setting"
+	"github.com/Unknwon/com"
+)
+
+var (
+	directories = make(directorySet)
+)
+
+// Dir returns all files from static or custom directory.
+func Dir(name string) ([]string, error) {
+	if directories.Filled(name) {
+		return directories.Get(name), nil
+	}
+
+	var (
+		result []string
+	)
+
+	customDir := path.Join(setting.CustomPath, "options", name)
+
+	if com.IsDir(customDir) {
+		files, err := com.StatDir(customDir, true)
+
+		if err != nil {
+			return []string{}, fmt.Errorf("Failed to read custom directory. %v", err)
+		}
+
+		result = append(result, files...)
+	}
+
+	staticDir := path.Join(setting.StaticRootPath, "options", name)
+
+	if com.IsDir(staticDir) {
+		files, err := com.StatDir(staticDir, true)
+
+		if err != nil {
+			return []string{}, fmt.Errorf("Failed to read static directory. %v", err)
+		}
+
+		result = append(result, files...)
+	}
+
+	return directories.AddAndGet(name, result), nil
+}
+
+// Locale reads the content of a specific locale from static or custom path.
+func Locale(name string) ([]byte, error) {
+	return fileFromDir(path.Join("locale", name))
+}
+
+// Readme reads the content of a specific readme from static or custom path.
+func Readme(name string) ([]byte, error) {
+	return fileFromDir(path.Join("readme", name))
+}
+
+// Gitignore reads the content of a specific gitignore from static or custom path.
+func Gitignore(name string) ([]byte, error) {
+	return fileFromDir(path.Join("gitignore", name))
+}
+
+// License reads the content of a specific license from static or custom path.
+func License(name string) ([]byte, error) {
+	return fileFromDir(path.Join("license", name))
+}
+
+// fileFromDir is a helper to read files from static or custom path.
+func fileFromDir(name string) ([]byte, error) {
+	customPath := path.Join(setting.CustomPath, "options", name)
+
+	if com.IsFile(customPath) {
+		return ioutil.ReadFile(customPath)
+	}
+
+	staticPath := path.Join(setting.StaticRootPath, "options", name)
+
+	if com.IsFile(staticPath) {
+		return ioutil.ReadFile(staticPath)
+	}
+
+	return []byte{}, fmt.Errorf("Asset file does not exist: %s", name)
+}