package common import ( "fmt" "os" "path" "github.com/hashicorp/packer/common" "github.com/hashicorp/packer/template/interpolate" ) // OutputConfig contains the configuration for builder's output. type OutputConfig struct { OutputDir string `mapstructure:"output_directory"` } // Prepare configures the output directory or returns an error if it already exists. func (c *OutputConfig) Prepare(ctx *interpolate.Context, pc *common.PackerConfig) []error { if c.OutputDir == "" { c.OutputDir = fmt.Sprintf("output-%s", pc.PackerBuildName) } var errs []error if path.IsAbs(c.OutputDir) { c.OutputDir = path.Clean(c.OutputDir) } else { wd, err := os.Getwd() if err != nil { errs = append(errs, err) } c.OutputDir = path.Clean(path.Join(wd, c.OutputDir)) } if !pc.PackerForce { if _, err := os.Stat(c.OutputDir); err == nil { errs = append(errs, fmt.Errorf( "Output directory '%s' already exists. It must not exist.", c.OutputDir)) } } return errs }