osascript_darwin.go RawHistoryFolder

1//go:build darwin
2
3package clipboard
4
5import (
6	"context"
7	"os/exec"
8	"time"
9
10	"github.com/bnema/vev/internal/ports"
11)
12
13const osaReadTimeout = time.Second
14
15// OSA implements ports.ClipboardReader using the macOS pasteboard through
16// osascript. It holds no state and is safe for concurrent use.
17type OSA struct{}
18
19var _ ports.ClipboardReader = (*OSA)(nil)
20
21// New returns the native clipboard reader for this operating system.
22func New() ports.ClipboardReader { return &OSA{} }
23
24// ReadImage reads the preferred pasteboard image representation. osascript
25// reports unavailable pasteboard flavors as command failures; those and all
26// malformed outputs are intentionally indistinguishable to callers from an
27// empty clipboard.
28func (*OSA) ReadImage(ctx context.Context) (string, []byte, error) {
29	for _, format := range []struct {
30		class string
31		mime  string
32	}{
33		{class: "PNGf", mime: "image/png"},
34		{class: "JPEG", mime: "image/jpeg"},
35	} {
36		commandCtx, cancel := context.WithTimeout(ctx, osaReadTimeout)
37		out, err := exec.CommandContext(commandCtx, "osascript", "-e", "the clipboard as «class "+format.class+"»").Output()
38		cancel()
39		if err != nil {
40			continue
41		}
42
43		data, err := parseOSAData(string(out), format.class)
44		if err == nil {
45			return format.mime, data, nil
46		}
47	}
48	return "", nil, ports.ErrNoClipboardImage
49}