Shorten SHA256 image references (if not --no-trunc is specified)

Author: Mikescher

.gitignore

@@ -40,6 +40,7 @@ _out/*
 input.test
 input1.test
 input2.test
+input3.test
 input.json
 input1.json
 input2.json

README.md

@@ -134,7 +134,7 @@ Options (default):
   --format <fmt>                     Pretty-print containers using a Go template
   --last , -n                        Show n last created containers (includes all states)
   --latest , -l                      Show the latest created container (includes all states)
-  --no-trunc                         Don't truncate output
+  --no-trunc                         Don't truncate output (eg ContainerIDs, Sha256 Image references, commandline)
   --quiet , -q                       Only display container IDs
   --size , -s                        Display total file sizes
 

cmd/dops/main.go

@@ -90,7 +90,7 @@ func printHelp(ctx *cli.PSContext) {
 	ctx.PrintPrimaryOutput("  --format <fmt>                     Pretty-print containers using a Go template")
 	ctx.PrintPrimaryOutput("  --last , -n                        Show n last created containers (includes all states)")
 	ctx.PrintPrimaryOutput("  --latest , -l                      Show the latest created container (includes all states)")
-	ctx.PrintPrimaryOutput("  --no-trunc                         Don't truncate output")
+	ctx.PrintPrimaryOutput("  --no-trunc                         Don't truncate output (eg ContainerIDs, Sha256 Image references, commandline)")
 	ctx.PrintPrimaryOutput("  --quiet , -q                       Only display container IDs")
 	ctx.PrintPrimaryOutput("  --size , -s                        Display total file sizes")
 	ctx.PrintPrimaryOutput("")

docker/util.go

@@ -1,6 +1,9 @@
 package docker
 
-import "strings"
+import (
+	"better-docker-ps/cli"
+	"strings"
+)
 
 var registryPrefixList = []string{
 	".com",
@@ -10,7 +13,7 @@ var registryPrefixList = []string{
 	".org",
 }
 
-func SplitDockerImage(img string) (string, string, string) {
+func SplitDockerImage(ctx *cli.PSContext, img string) (string, string, string) {
 
 	resultRegistry := ""
 	resultImage := ""
@@ -42,6 +45,11 @@ func SplitDockerImage(img string) (string, string, string) {
 
 	resultImage = img
 
+	if resultImage == "sha256" && len(resultTag) == 64 && ctx.Opt.Truncate {
+		resultImage = "(sha256)"
+		resultTag = resultTag[0:12] + "..."
+	}
+
 	return resultRegistry, resultImage, resultTag
 
 }

impl/columns.go

@@ -80,7 +80,7 @@ func ColRegistry(ctx *cli.PSContext, allData []docker.ContainerSchema, cont *doc
 		return []string{"REGISTRY"}
 	}
 
-	v, _, _ := docker.SplitDockerImage(cont.Image)
+	v, _, _ := docker.SplitDockerImage(ctx, cont.Image)
 
 	return []string{v}
 }
@@ -90,7 +90,7 @@ func ColImage(ctx *cli.PSContext, allData []docker.ContainerSchema, cont *docker
 		return []string{"IMAGE"}
 	}
 
-	_, v, _ := docker.SplitDockerImage(cont.Image)
+	_, v, _ := docker.SplitDockerImage(ctx, cont.Image)
 
 	return []string{v}
 }
@@ -100,7 +100,7 @@ func ColImageTag(ctx *cli.PSContext, allData []docker.ContainerSchema, cont *doc
 		return []string{"TAG"}
 	}
 
-	_, _, v := docker.SplitDockerImage(cont.Image)
+	_, _, v := docker.SplitDockerImage(ctx, cont.Image)
 
 	return []string{v}
 }
@@ -523,22 +523,22 @@ func SortFullImage(ctx *cli.PSContext, v1 *docker.ContainerSchema, v2 *docker.Co
 }
 
 func SortRegistry(ctx *cli.PSContext, v1 *docker.ContainerSchema, v2 *docker.ContainerSchema) int {
-	reg1, _, _ := docker.SplitDockerImage(v1.Image)
-	reg2, _, _ := docker.SplitDockerImage(v2.Image)
+	reg1, _, _ := docker.SplitDockerImage(ctx, v1.Image)
+	reg2, _, _ := docker.SplitDockerImage(ctx, v2.Image)
 
 	return langext.Compare(reg1, reg2)
 }
 
 func SortImage(ctx *cli.PSContext, v1 *docker.ContainerSchema, v2 *docker.ContainerSchema) int {
-	_, img1, _ := docker.SplitDockerImage(v1.Image)
-	_, img2, _ := docker.SplitDockerImage(v2.Image)
+	_, img1, _ := docker.SplitDockerImage(ctx, v1.Image)
+	_, img2, _ := docker.SplitDockerImage(ctx, v2.Image)
 
 	return langext.Compare(img1, img2)
 }
 
 func SortImageTag(ctx *cli.PSContext, v1 *docker.ContainerSchema, v2 *docker.ContainerSchema) int {
-	_, _, tag1 := docker.SplitDockerImage(v1.Image)
-	_, _, tag2 := docker.SplitDockerImage(v2.Image)
+	_, _, tag1 := docker.SplitDockerImage(ctx, v1.Image)
+	_, _, tag2 := docker.SplitDockerImage(ctx, v2.Image)
 
 	return langext.Compare(tag1, tag2)
 }