config.go

package main

import (
	"fmt"
	"io/ioutil"

	"github.com/hashicorp/hcl"
)

// Config is the structure of the configuration for the Otto CLI.
//
// This is not the configuration for Otto itself. That is in the
// "config" package.
type Config struct {
	DisableCheckpoint          bool `hcl:"disable_checkpoint"`
	DisableCheckpointSignature bool `hcl:"disable_checkpoint_signature"`
}

// BuiltinConfig is the built-in defaults for the configuration. These
// can be overridden by user configurations.
var BuiltinConfig Config

// ConfigFile returns the default path to the configuration file.
//
// On Unix-like systems this is the ".ottorc" file in the home directory.
// On Windows, this is the "otto.rc" file in the application data
// directory.
func ConfigFile() (string, error) {
	return configFile()
}

// ConfigDir returns the configuration directory for Otto.
func ConfigDir() (string, error) {
	return configDir()
}

// LoadConfig loads the CLI configuration from ".ottorc" files.
func LoadConfig(path string) (*Config, error) {
	// Read the HCL file and prepare for parsing
	d, err := ioutil.ReadFile(path)
	if err != nil {
		return nil, fmt.Errorf(
			"Error reading %s: %s", path, err)
	}

	// Parse it
	obj, err := hcl.Parse(string(d))
	if err != nil {
		return nil, fmt.Errorf(
			"Error parsing %s: %s", path, err)
	}

	// Build up the result
	var result Config
	if err := hcl.DecodeObject(&result, obj); err != nil {
		return nil, err
	}

	return &result, nil
}