config.go

// KUISP - A utility to serve static content & reverse proxy to RESTful services
//
// Copyright 2015 Red Hat, Inc
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package main

import (
	"io/ioutil"
	"log"
	"os"
	"path/filepath"
	"strings"
	"text/template"
)

type context struct {
}

func (c *context) Env() map[string]string {
	env := make(map[string]string)
	for _, i := range os.Environ() {
		sep := strings.Index(i, "=")
		env[i[0:sep]] = i[sep+1:]
	}
	return env
}

func createConfig(templateFile string, outputFile string) {
	t, err := template.New(filepath.Base(templateFile)).Funcs(
		template.FuncMap{
			"cat": func(f string) (string, error) {
				s, err := ioutil.ReadFile(f)
				return string(s), err
			},
		},
	).ParseFiles(templateFile)
	if err != nil {
		log.Fatal(err)
	}
	dir := filepath.Dir(outputFile)
	if _, err := os.Stat(dir); os.IsNotExist(err) {
		os.MkdirAll(dir, 0755)
	}
	file, err := os.Create(outputFile)
	if err != nil {
		log.Fatal(err)
	}
	defer file.Close()
	err = t.Execute(file, &context{})
	if err != nil {
		log.Fatal(err)
	}
}