/
image_formatter.go
108 lines (91 loc) · 2.69 KB
/
image_formatter.go
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package formatter
import (
"strings"
"github.com/docker/docker/api/types"
"github.com/docker/go-units"
"github.com/moncho/dry/docker"
)
const (
imageIDHeader = "IMAGE ID"
repository = "REPOSITORY"
tag = "TAG"
digest = "DIGEST"
createdSince = "CREATEDSINCE"
size = "SIZE"
)
// ImageFormatter knows how to pretty-print the information of an image
type ImageFormatter struct {
trunc bool
header []string
image types.ImageSummary
}
// NewImageFormatter creates an image formatter
func NewImageFormatter(image types.ImageSummary, trunc bool) *ImageFormatter {
return &ImageFormatter{trunc: trunc, image: image}
}
func (formatter *ImageFormatter) addHeader(header string) {
if formatter.header == nil {
formatter.header = []string{}
}
formatter.header = append(formatter.header, strings.ToUpper(header))
}
// ID prettifies the id
func (formatter *ImageFormatter) ID() string {
formatter.addHeader(imageIDHeader)
if formatter.trunc {
return docker.TruncateID(docker.ImageID(formatter.image.ID))
}
return docker.ImageID(formatter.image.ID)
}
// Repository prettifies the repository
func (formatter *ImageFormatter) Repository() string {
formatter.addHeader(repository)
if len(formatter.image.RepoTags) > 0 {
tagPos := strings.LastIndex(formatter.image.RepoTags[0], ":")
if tagPos > 0 {
return formatter.image.RepoTags[0][:tagPos]
}
return formatter.image.RepoTags[0]
} else if len(formatter.image.RepoDigests) > 0 {
tagPos := strings.LastIndex(formatter.image.RepoDigests[0], "@")
if tagPos > 0 {
return formatter.image.RepoDigests[0][:tagPos]
}
return formatter.image.RepoDigests[0]
}
return "<none>"
}
// Tag prettifies the tag
func (formatter *ImageFormatter) Tag() string {
formatter.addHeader(tag)
if len(formatter.image.RepoTags) > 0 {
tagPos := strings.LastIndex(formatter.image.RepoTags[0], ":")
return formatter.image.RepoTags[0][tagPos+1:]
}
return "<none>"
}
// Digest prettifies the image digestv
func (formatter *ImageFormatter) Digest() string {
formatter.addHeader(digest)
if len(formatter.image.RepoDigests) == 0 {
return ""
}
return formatter.image.RepoDigests[0]
}
// CreatedSince prettifies the image creation date
func (formatter *ImageFormatter) CreatedSince() string {
formatter.addHeader(createdSince)
return docker.DurationForHumans(formatter.image.Created)
}
// Size prettifies the image size
func (formatter *ImageFormatter) Size() string {
formatter.addHeader(size)
//srw := units.HumanSize(float64(formatter.image.Size))
//sf := srw
if formatter.image.VirtualSize > 0 {
sv := units.HumanSize(float64(formatter.image.VirtualSize))
//sf = fmt.Sprintf("%s (virtual %s)", srw, sv)
return sv
}
return ""
}