v0.8.3: add sidecar inspection

CHANGELOG.md

@@ -2,6 +2,13 @@
 
 This changelog is maintained from git history plus the published Gitea release series. Future releases should update this file and publish matching release notes on the release page.
 
+## v0.8.3
+
+XMP sidecar inspection release.
+
+- Add `sidecar inspect <file.xmp>` to print key photoscli metadata from generated XMP sidecars.
+- Add `sidecar inspect <file.xmp> --json` for scriptable inspection output.
+
 ## v0.8.2
 
 Metadata-only XMP refresh release.

Makefile

@@ -1,6 +1,6 @@
 BINARY     := ./bin/photoscli
 MODULE     := gitea.k3s.k0.nu/tools/photocli
-VERSION    := 0.8.2
+VERSION    := 0.8.3
 RELEASE_ZIP := ./bin/photoscli-$(VERSION)-macos-arm64.zip
 RELEASE_NOTES := RELEASE_NOTES.md
 BRIDGE_DIR := bridge

README.md

@@ -363,6 +363,13 @@ Verify generated sidecars with:
 photoscli verify --out ./backup --sidecar
 ```
 
+Inspect one generated sidecar with:
+
+```bash
+photoscli sidecar inspect ./backup/IMG_0001.xmp
+photoscli sidecar inspect ./backup/IMG_0001.xmp --json
+```
+
 Refresh sidecars for files already present in a manifest-backed export without rewriting media files:
 
 ```bash

RELEASE_NOTES.md

@@ -1,19 +1,17 @@
-# v0.8.2
+# v0.8.3
 
-This release adds metadata-only XMP sidecar refresh for existing manifest-backed exports.
+This release adds XMP sidecar inspection for quick validation and scripting.
 
 ## Highlights
 
-- Add `--metadata-only` for `export` and `backup-all`.
-- Use manifest paths to find existing media files and write or refresh `.xmp` sidecars without re-exporting media.
-- Require `--sidecar xmp` and an enabled manifest for metadata-only mode.
-- Leave media files untouched; only generated XMP sidecars are written.
-- Support `--reverse-geocode` during metadata-only refresh.
+- Add `sidecar inspect <file.xmp>` to print photoscli metadata embedded in a generated sidecar.
+- Add `sidecar inspect <file.xmp> --json` for scriptable output.
+- Keep `verify --sidecar` for backup-wide checks and use `sidecar inspect` for one-file investigation.
 
 ## Assets
 
 - `photoscli`: Apple Silicon macOS binary (`darwin/arm64`).
-- `photoscli-0.8.2-macos-arm64.zip`: Apple Silicon binary plus README, USERGUIDE, and CHANGELOG.
+- `photoscli-0.8.3-macos-arm64.zip`: Apple Silicon binary plus README, USERGUIDE, and CHANGELOG.
 - `USERGUIDE.md`: standalone user guide.
 
 Intel Macs are not currently a supported release target.

USERGUIDE.md

@@ -573,6 +573,13 @@ Verify sidecars after an export:
 
 This reports missing, zero-byte, unreadable, or asset-ID mismatched `.xmp` files.
 
+Inspect one generated sidecar when troubleshooting or scripting:
+
+```bash
+./bin/photoscli sidecar inspect ./PhotosBackup/IMG_0001.xmp
+./bin/photoscli sidecar inspect ./PhotosBackup/IMG_0001.xmp --json
+```
+
 Refresh metadata only for an existing manifest-backed backup:
 
 ```bash

cmd/photoscli/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"bytes"
 	"encoding/json"
 	"encoding/xml"
 	"fmt"
@@ -91,6 +92,8 @@ func run(args []string, stdout, stderr io.Writer, bridge photos.Bridge) int {
 		return cmdFailures(args[1:], stdout, stderr)
 	case "status":
 		return cmdStatus(args[1:], stdout, stderr)
+	case "sidecar":
+		return cmdSidecar(args[1:], stdout, stderr)
 	case "version", "--version", "-v":
 		fmt.Fprintln(stdout, version)
 		return exitOK
@@ -132,6 +135,7 @@ USAGE
   photoscli retry-failed --out <dir> --clear-on-success
   photoscli failures list --out <dir>
   photoscli failures clear --out <dir>
+  photoscli sidecar inspect <file.xmp> [--json]
   photoscli status --out <dir> [--json]
   photoscli version
   photoscli help
@@ -176,6 +180,9 @@ COMMANDS
   failures list|clear --out <dir>
       List or clear deduplicated failure records.
 
+  sidecar inspect <file.xmp> [--json]
+      Read a generated XMP sidecar and print key photoscli metadata.
+
   status --out <dir> [--manifest jsonl|sqlite] [--json]
       Show manifest type, entry count, and failure count for a backup.
 
@@ -2187,6 +2194,68 @@ func verifySidecar(stdout io.Writer, outDir, id, checkPath string) int {
 	return 0
 }
 
+func cmdSidecar(args []string, stdout, stderr io.Writer) int {
+	if len(args) < 1 || args[0] != "inspect" {
+		fmt.Fprintln(stderr, "error: expected sidecar inspect <file.xmp>")
+		return exitErr
+	}
+	if len(args) < 2 {
+		fmt.Fprintln(stderr, "error: sidecar inspect requires <file.xmp>")
+		return exitErr
+	}
+	path := args[1]
+	data, err := readFileFunc(path)
+	if err != nil {
+		fmt.Fprintf(stderr, "error: %v\n", err)
+		return exitErr
+	}
+	meta := inspectXMP(data)
+	if len(meta) == 0 {
+		fmt.Fprintln(stderr, "error: no photoscli metadata found")
+		return exitErr
+	}
+	if hasFlag(args[2:], "--json") {
+		if err := json.NewEncoder(stdout).Encode(meta); err != nil {
+			fmt.Fprintf(stderr, "error: %v\n", err)
+			return exitErr
+		}
+		return exitOK
+	}
+	keys := make([]string, 0, len(meta))
+	for k := range meta {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	for _, k := range keys {
+		fmt.Fprintf(stdout, "%s\t%s\n", k, meta[k])
+	}
+	return exitOK
+}
+
+func inspectXMP(data []byte) map[string]string {
+	attrs := map[string]string{}
+	dec := xml.NewDecoder(bytes.NewReader(data))
+	for {
+		tok, err := dec.Token()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return attrs
+		}
+		start, ok := tok.(xml.StartElement)
+		if !ok {
+			continue
+		}
+		for _, a := range start.Attr {
+			if a.Name.Space == "photoscli" || a.Name.Space == "https://gitea.k3s.k0.nu/tools/photocli/ns/1.0/" {
+				attrs[a.Name.Local] = a.Value
+			}
+		}
+	}
+	return attrs
+}
+
 func cmdRetryFailed(args []string, stdout, stderr io.Writer, bridge photos.Bridge) int {
 	outDir := flagVal(args, "--out")
 	clearOnSuccess := hasFlag(args, "--clear-on-success")

cmd/photoscli/main_test.go

@@ -35,6 +35,10 @@ type mockBridge struct {
 	cancelled        atomic.Bool
 }
 
+type errWriter struct{}
+
+func (errWriter) Write([]byte) (int, error) { return 0, fmt.Errorf("write") }
+
 type noEntryManifest struct{}
 
 func (noEntryManifest) Has(string) bool                   { return false }
@@ -4219,6 +4223,50 @@ func TestVerifySidecarBranches(t *testing.T) {
 	readFileFunc = oldRead
 }
 
+func TestSidecarInspect(t *testing.T) {
+	dir := t.TempDir()
+	path := filepath.Join(dir, "photo.xmp")
+	if err := writeXMPSidecar(path, xmpSidecarData{AssetID: "x1", ExportedFilename: "photo.jpg", Album: "Trips"}); err != nil {
+		t.Fatal(err)
+	}
+	out, stderr, rc := runWith([]string{"sidecar", "inspect", path}, &mockBridge{})
+	if rc != exitOK || stderr != "" || !strings.Contains(out, "assetID\tx1") || !strings.Contains(out, "album\tTrips") {
+		t.Fatalf("inspect rc=%d out=%q stderr=%q", rc, out, stderr)
+	}
+	out, stderr, rc = runWith([]string{"sidecar", "inspect", path, "--json"}, &mockBridge{})
+	if rc != exitOK || stderr != "" || !strings.Contains(out, `"assetID":"x1"`) || !strings.Contains(out, `"exportedFilename":"photo.jpg"`) {
+		t.Fatalf("inspect json rc=%d out=%q stderr=%q", rc, out, stderr)
+	}
+	_, stderr, rc = runWith([]string{"sidecar"}, &mockBridge{})
+	if rc != exitErr || !strings.Contains(stderr, "expected sidecar inspect") {
+		t.Fatalf("inspect missing subcommand rc=%d stderr=%q", rc, stderr)
+	}
+	_, stderr, rc = runWith([]string{"sidecar", "inspect"}, &mockBridge{})
+	if rc != exitErr || !strings.Contains(stderr, "requires <file.xmp>") {
+		t.Fatalf("inspect missing path rc=%d stderr=%q", rc, stderr)
+	}
+	_, stderr, rc = runWith([]string{"sidecar", "inspect", filepath.Join(dir, "missing.xmp")}, &mockBridge{})
+	if rc != exitErr || !strings.Contains(stderr, "error:") {
+		t.Fatalf("inspect missing file rc=%d stderr=%q", rc, stderr)
+	}
+	plain := filepath.Join(dir, "plain.xmp")
+	if err := os.WriteFile(plain, []byte(`<x:xmpmeta xmlns:x="adobe:ns:meta/"></x:xmpmeta>`), 0644); err != nil {
+		t.Fatal(err)
+	}
+	_, stderr, rc = runWith([]string{"sidecar", "inspect", plain}, &mockBridge{})
+	if rc != exitErr || !strings.Contains(stderr, "no photoscli metadata") {
+		t.Fatalf("inspect no metadata rc=%d stderr=%q", rc, stderr)
+	}
+	bad := inspectXMP([]byte(`<x:xmpmeta><rdf:RDF>`))
+	if len(bad) != 0 {
+		t.Fatalf("expected empty metadata on malformed XML, got %#v", bad)
+	}
+	stderrBuf := &bytes.Buffer{}
+	if rc := cmdSidecar([]string{"inspect", path, "--json"}, errWriter{}, stderrBuf); rc != exitErr || !strings.Contains(stderrBuf.String(), "error:") {
+		t.Fatalf("expected json encoder error rc=%d stderr=%q", rc, stderrBuf.String())
+	}
+}
+
 func TestXMPSidecarHelpers(t *testing.T) {
 	if got := sidecarPath("/tmp/IMG_0001.HEIC"); got != "/tmp/IMG_0001.xmp" {
 		t.Fatalf("sidecar path = %q", got)