package daemon

 
 import (

 	"errors"

 	"fmt"

 	"strings"
 

 	"github.com/docker/docker/nat"
 	"github.com/docker/docker/runconfig"

 )
 
 func migratePortMappings(config *runconfig.Config, hostConfig *runconfig.HostConfig) error {
 	if config.PortSpecs != nil {
 		ports, bindings, err := nat.ParsePortSpecs(config.PortSpecs)
 		if err != nil {
 			return err
 		}
 		config.PortSpecs = nil
 		if len(bindings) > 0 {
 			if hostConfig == nil {
 				hostConfig = &runconfig.HostConfig{}
 			}
 			hostConfig.PortBindings = bindings
 		}
 
 		if config.ExposedPorts == nil {
 			config.ExposedPorts = make(nat.PortSet, len(ports))
 		}
 		for k, v := range ports {
 			config.ExposedPorts[k] = v
 		}
 	}
 	return nil
 }
 

 func mergeLxcConfIntoOptions(hostConfig *runconfig.HostConfig) ([]string, error) {

 	if hostConfig == nil {

 		return nil, nil

 	}
 

 	out := []string{}
 

 	// merge in the lxc conf options into the generic config map
 	if lxcConf := hostConfig.LxcConf; lxcConf != nil {

 		lxSlice := lxcConf.Slice()
 		for _, pair := range lxSlice {

 			// because lxc conf gets the driver name lxc.XXXX we need to trim it off
 			// and let the lxc driver add it back later if needed

 			if !strings.Contains(pair.Key, ".") {
 				return nil, errors.New("Illegal Key passed into LXC Configurations")
 			}

 			parts := strings.SplitN(pair.Key, ".", 2)

 			out = append(out, fmt.Sprintf("%s=%s", parts[1], pair.Value))

 		}
 	}

 	return out, nil

 }