Configuration loader in Go goconf

goconf ==== A configuration loader in Go. ## Overview * Read configuration automatically based on the given struct's field name. * Load configuration from multiple sources * multiple file inherit Values are resolved with the following priorities (lowest to highest): 1. Options struct default value 2. Flags default value 3. Config file value, TOML or JSON file 4. Command line flag Here is an example of loading configuration in priority: ```go package main import "github.com/zsounder/goconf" type TestOptions struct { goconf.AutoOptions HTTPAddress string `default:"0.0.0.0:0000"` Hosts []string `flag:"hosts" cfg:"hosts" default:"127.0.0.0,127.0.0.1"` LogLevel int `default:"3"` BoolVar bool `default:"false"` } func main() { ops := &TestOptions{} goconf.ResolveAutoFlag(ops,"conf_1.toml","conf_2.toml").ValidateAndPanic(ops) } ``` The output will be: ```plain [Config] auto flag succ, name: _auto_conf_files_ val: [Config] auto flag succ, name: _auto_dir_running_ val: [Config] auto flag succ, name: http_address val: 0.0.0.0:0000 [Config] auto flag fail, name: hosts val: 127.0.0.0,127.0.0.1 err: type not support []string [Config] auto flag succ, name: log_level val: 3 [Config] auto flag succ, name: bool_var val: false [Config] file: [conf_1.toml conf_2.toml] [Config] load: conf_1.toml [Config] load: conf_2.toml [Config] { "AutoConfFiles": "", "AutoDirRunning": "", "HTTPAddress": "127.0.0.1:2", "Hosts": [ "10.0.61.29", "10.0.61.30", "10.0.61.31", "10.0.61.32" ], "LogLevel": 6, "BoolVar": true } ``` ```go package main import "github.com/zsounder/goconf" type TestOptions struct { goconf.AutoOptions HTTPAddress string `default:"0.0.0.0:0000"` Hosts []string `flag:"hosts" cfg:"hosts" default:"127.0.0.0,127.0.0.1"` LogLevel int `default:"3"` BoolVar bool `default:"false"` } func main() { ops := &TestOptions{} // conf_3 inherit from conf_1 and conf_2 goconf.ResolveAutoFlag(ops,"conf_3.toml").ValidateAndPanic(ops) } ``` The output will be: ```plain [Config] auto flag succ, name: _auto_conf_files_ val: [Config] auto flag succ, name: _auto_dir_running_ val: [Config] auto flag succ, name: http_address val: 0.0.0.0:0000 [Config] auto flag fail, name: hosts val: 127.0.0.0,127.0.0.1 err: type not support []string [Config] auto flag succ, name: log_level val: 3 [Config] auto flag succ, name: bool_var val: false [Config] file: [conf_3.toml] [Config] load: ./conf_1.toml [Config] load: ./conf_2.toml [Config] load: conf_3.toml [Config] { "AutoConfFiles": "", "AutoDirRunning": "", "HTTPAddress": "127.0.0.1:2", "Hosts": [ "10.0.61.29", "10.0.61.30", "10.0.61.31", "10.0.61.32", "10.0.61.33" ], "LogLevel": 2, "BoolVar": true } ```