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)

巴特西

Golang读取并修改非主流配置文件

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