mirror of
https://github.com/etcd-io/etcd.git
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100 lines
2.1 KiB
Go
100 lines
2.1 KiB
Go
// Copyright 2013, Cong Ding. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// author: Cong Ding <dinggnu@gmail.com>
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//
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package config
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import (
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"bufio"
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"errors"
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"os"
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"strings"
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)
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var commentPrefix = []string{"//", "#", ";"}
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func Read(filename string) (map[string]string, error) {
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var res = map[string]string{}
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in, err := os.Open(filename)
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if err != nil {
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return res, err
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}
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defer in.Close()
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scanner := bufio.NewScanner(in)
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line := ""
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section := ""
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for scanner.Scan() {
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if scanner.Text() == "" {
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continue
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}
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if line == "" {
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sec := checkSection(scanner.Text())
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if sec != "" {
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section = sec + "."
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continue
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}
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}
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if checkComment(scanner.Text()) {
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continue
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}
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line += scanner.Text()
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if strings.HasSuffix(line, "\\") {
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line = line[:len(line)-1]
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continue
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}
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key, value, err := checkLine(line)
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if err != nil {
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return res, errors.New("WRONG: " + line)
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}
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res[section+key] = value
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line = ""
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}
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return res, nil
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}
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func checkSection(line string) string {
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line = strings.TrimSpace(line)
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lineLen := len(line)
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if lineLen < 2 {
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return ""
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}
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if line[0] == '[' && line[lineLen-1] == ']' {
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return line[1 : lineLen-1]
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}
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return ""
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}
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func checkLine(line string) (string, string, error) {
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key := ""
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value := ""
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sp := strings.SplitN(line, "=", 2)
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if len(sp) != 2 {
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return key, value, errors.New("WRONG: " + line)
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}
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key = strings.TrimSpace(sp[0])
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value = strings.TrimSpace(sp[1])
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return key, value, nil
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}
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func checkComment(line string) bool {
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line = strings.TrimSpace(line)
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for p := range commentPrefix {
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if strings.HasPrefix(line, commentPrefix[p]) {
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return true
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}
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}
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return false
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}
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