forked from tildetown/bbj2
97 lines
1.6 KiB
Go
97 lines
1.6 KiB
Go
package main
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
|
|
yaml "gopkg.in/yaml.v3"
|
|
)
|
|
|
|
const (
|
|
defaultPort = 7099
|
|
defaultInstanceName = "BBJ"
|
|
defaultHost = "127.0.0.1"
|
|
)
|
|
|
|
type Config struct {
|
|
Admins []string
|
|
Port int
|
|
Host string
|
|
InstanceName string `yaml:"instance_name"`
|
|
AllowAnon bool
|
|
Debug bool
|
|
}
|
|
|
|
type iostreams struct {
|
|
Err io.Writer
|
|
Out io.Writer
|
|
}
|
|
|
|
type Opts struct {
|
|
ConfigPath string
|
|
IO iostreams
|
|
}
|
|
|
|
func main() {
|
|
var configFlag = flag.String("config", "config.yml", "A path to a config file.")
|
|
flag.Parse()
|
|
opts := Opts{
|
|
ConfigPath: *configFlag,
|
|
IO: iostreams{
|
|
Err: os.Stderr,
|
|
Out: os.Stdout,
|
|
},
|
|
}
|
|
|
|
err := _main(opts)
|
|
if err != nil {
|
|
fmt.Fprintf(os.Stderr, "failed: %s", err)
|
|
}
|
|
}
|
|
|
|
func _main(opts Opts) error {
|
|
cfg, err := parseConfig(opts.ConfigPath)
|
|
if err != nil {
|
|
fmt.Fprintf(os.Stderr, "could not read config file '%s'", opts.ConfigPath)
|
|
os.Exit(1)
|
|
}
|
|
|
|
fmt.Printf("DBG %#v\n", cfg.InstanceName)
|
|
|
|
return nil
|
|
}
|
|
|
|
func parseConfig(configPath string) (*Config, error) {
|
|
cfgBytes, err := os.ReadFile(configPath)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to read config file: %w", err)
|
|
}
|
|
|
|
fmt.Printf("DBG %#v\n", string(cfgBytes))
|
|
|
|
var cfg Config
|
|
|
|
if err := yaml.Unmarshal(cfgBytes, &cfg); err != nil {
|
|
return nil, fmt.Errorf("failed to parse config: %w", err)
|
|
}
|
|
|
|
fmt.Printf("DBG %#v\n", cfg)
|
|
|
|
if cfg.Port == 0 {
|
|
cfg.Port = defaultPort
|
|
}
|
|
|
|
if cfg.InstanceName == "" {
|
|
cfg.InstanceName = defaultInstanceName
|
|
|
|
}
|
|
|
|
if cfg.Host == "" {
|
|
cfg.Host = defaultHost
|
|
}
|
|
|
|
return &cfg, nil
|
|
}
|