Golang读取并修改非主流配置文件

今天工作中碰到的问题，要求修改此配置文件，没看出来是什么格式，用了下面的思路：

  mysql {
                # If any of the files below are set, TLS encryption is enabled
                tls {
                        ca_file = "/etc/ssl/certs/my_ca.crt"
                        ca_path = "/etc/ssl/certs/"
                        certificate_file = "/etc/ssl/certs/private/client.crt"
                        private_key_file = "/etc/ssl/certs/private/client.key"
                        cipher = "DHE-RSA-AES256-SHA:AES128-SHA"

                        tls_required = yes
                        tls_check_cert = no
                        tls_check_cert_cn = no
                }

                # If yes, (or auto and libmysqlclient reports warnings are
                # available), will retrieve and log additional warnings from
                # the server if an error has occured. Defaults to 'auto'
                warnings = auto
        }

        postgresql {

                # unlike MySQL, which has a tls{} connection configuration, postgresql
                # uses its connection parameters - see the radius_db option below in
                # this file

                # Send application_name to the postgres server
                # Only supported in PG 9.0 and greater. Defaults to no.
                send_application_name = yes
        }
# Connection info:
        #
        server = "127.0.0.1"
        port = 5432
        login = "testuser13"
        password = "Tpass123"

        # Database table configuration for everything except Oracle
        radius_db = "test13"

        # If you are using Oracle then use this instead
#       radius_db = "(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521))(CONNECT_DATA=(SID=your_sid)))"

用Go代码修改如上所示的配置文件，如radius_db字段的值，步骤如下：

• github.com/go-ini/ini获取键radius_db的值；
• fmt.Sprintf()将radius_db = "test13"整体包装成字符串；
• fmt.Sprintf()包装新字符串；
• strings.Replace()整体替换。

主要实现代码：

// 根据路径获取文件
configFile := "./sql.conf"

configContent, err := ioutil.ReadFile(configFile)

// 加载配置文件，跳过无法解析的行；设置key/value分隔符为"="
cfg, err := ini.LoadSources(ini.LoadOptions
{SkipUnrecognizableLines:true, KeyValueDelimiters:"="}, configFile)

// 获取"radius_db"的值
sqlDBName := cfg.Section("").Key("radius_db").String()

// newName指要修改的新值
sqlDBNameOld := fmt.Sprintf(`radius_db = "%s"`, sqlDBName)
sqlDBNameNew := fmt.Sprintf(`radius_db = "%s"`, newName)

// 替换并写入
newConfig := strings.Replace(string(configContent), sqlDBNameOld, sqlDBNameNew, 1)

// 写入文件
err = ioutil.WriteFile(configFile, []byte(newConfig), 0644)