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config.go
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config.go
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package config
import (
"fmt"
"io/ioutil"
"log"
"os"
"path"
"github.com/cep21/xdgbasedir"
"gopkg.in/yaml.v2"
)
var configDirectoryPath string
// ServiceConfig contains configuration information for a service
type ServiceConfig struct {
Token string
User string
}
// OutputConfig sontains configuration information for an output
type OutputConfig struct {
SpinnerIndex int `yaml:"spinnerIndex"`
SpinnerInterval int `yaml:"spinnerInterval"`
SpinnerColor string `yaml:"spinnerColor"`
}
// Config contains configuration information
type Config struct {
DatabasePath string `yaml:"databasePath"`
IndexPath string `yaml:"indexPath"`
Services map[string]*ServiceConfig `yaml:"services"`
Outputs map[string]*OutputConfig `yaml:"outputs"`
}
// GetService returns the configuration information for a service
func (config *Config) GetService(name string) *ServiceConfig {
if config.Services == nil {
config.Services = make(map[string]*ServiceConfig)
}
service := config.Services[name]
if service == nil {
service = &ServiceConfig{}
config.Services[name] = service
}
return service
}
// GetOutput returns the configuration information for an output
func (config *Config) GetOutput(name string) *OutputConfig {
if config.Outputs == nil {
config.Outputs = make(map[string]*OutputConfig)
}
output := config.Outputs[name]
if output == nil {
output = &OutputConfig{}
config.Outputs[name] = output
}
return output
}
// ReadConfig reads the configuration information
func ReadConfig() (*Config, error) {
file := configFilePath()
var config Config
if _, err := os.Stat(file); err == nil {
// Read and unmarshal file only if it exists
f, err := ioutil.ReadFile(file)
if err != nil {
return nil, err
}
err = yaml.Unmarshal(f, &config)
if err != nil {
return nil, err
}
}
// Set default database path
if config.DatabasePath == "" {
config.DatabasePath = path.Join(configDirectoryPath, fmt.Sprintf("%s.db", ProgramName))
}
// Set default search index path
if config.IndexPath == "" {
config.IndexPath = path.Join(configDirectoryPath, fmt.Sprintf("%s.idx", ProgramName))
}
return &config, nil
}
// WriteConfig writes the configuration information
func (config *Config) WriteConfig() error {
err := os.MkdirAll(configDirectoryPath, 0700)
if err != nil {
return err
}
data, err := yaml.Marshal(config)
if err != nil {
return err
}
return ioutil.WriteFile(configFilePath(), data, 0600)
}
func configFilePath() string {
return path.Join(configDirectoryPath, fmt.Sprintf("%s.yaml", ProgramName))
}
func init() {
baseDir, err := xdgbasedir.ConfigHomeDirectory()
if err != nil {
log.Fatal("Can't find XDG BaseDirectory")
} else {
configDirectoryPath = path.Join(baseDir, ProgramName)
}
}