Files
mfer/internal/cli/export.go
T
sneak 98c916ef20
check / check (push) Waiting to run
Make error message wording consistent (closes #165)
Error messages in mfer/ and internal/cli/ are lowercase except names and
acronyms, carry no "failed to" or command-name prefix, and each wrap names
only the operation and thing the wrapped error does not already name, so a
stacked message names what failed once. Wraps around errors that already
name their operation and path (os and afero path errors, url.Error, the gpg
helpers' own errors) are dropped. runGPG appends gpg's stderr only when gpg
wrote some, so no message ends in a colon. errHTTPStatus reads "unexpected
HTTP status"; both inner-not-set sentinels read "inner message not set".
No sentinel, errors.Is result or exit status changes. Message tests pin the
new text through the real call sites.

Model: opus-5-5
2026-10-07 13:49:31 +00:00

84 lines
1.8 KiB
Go

package cli
import (
"context"
"encoding/hex"
"encoding/json"
"fmt"
"time"
"github.com/urfave/cli/v3"
"sneak.berlin/go/mfer/mfer"
)
// ExportEntry represents a single file entry in the exported JSON output.
type ExportEntry struct {
Path string `json:"path"`
Size int64 `json:"size"`
Hashes []string `json:"hashes"`
Mtime *string `json:"mtime,omitempty"`
Ctime *string `json:"ctime,omitempty"`
Mode string `json:"mode"` // octal, "0000" when none was recorded
}
func (mfa *CLIApp) exportManifestOperation(
ctx context.Context, cmd *cli.Command,
) error {
pathOrURL, err := mfa.resolveManifestArg(cmd)
if err != nil {
return err
}
rc, err := mfa.openManifestReader(ctx, pathOrURL)
if err != nil {
return err
}
defer func() { _ = rc.Close() }()
//nolint:contextcheck // mfer loads a manifest without a context
manifest, err := mfer.NewManifestFromReader(rc)
if err != nil {
return fmt.Errorf("parse manifest: %w", err)
}
files := manifest.Files()
entries := make([]ExportEntry, 0, len(files))
for _, f := range files {
entry := ExportEntry{
Path: f.GetPath(),
Size: f.GetSize(),
Hashes: make([]string, 0, len(f.GetHashes())),
Mode: fmt.Sprintf("%04o", f.GetMode()),
}
for _, h := range f.GetHashes() {
entry.Hashes = append(entry.Hashes, hex.EncodeToString(h.GetMultiHash()))
}
if mtime, ok := entryMtime(f); ok {
t := mtime.UTC().Format(time.RFC3339Nano)
entry.Mtime = &t
}
if f.GetCtime() != nil {
t := time.Unix(f.GetCtime().GetSeconds(), int64(f.GetCtime().GetNanos())).
UTC().Format(time.RFC3339Nano)
entry.Ctime = &t
}
entries = append(entries, entry)
}
enc := json.NewEncoder(mfa.Stdout)
enc.SetIndent("", " ")
err = enc.Encode(entries)
if err != nil {
return fmt.Errorf("encode JSON: %w", err)
}
return nil
}