39 lines
1.1 KiB
Go
39 lines
1.1 KiB
Go
 
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// Package icon carries the talk icon for the desktop: the PNG is embedded
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// in the binary and written next to the config so the OS can show it in
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// notifications (Windows toast identity, freedesktop app_icon). The source
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// is assets/icon/talk.svg; `go run assets/icon/gen.go` renders it, the
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// Windows .ico and the resource objects for talk.exe.
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package icon
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import (
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"bytes"
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_ "embed"
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"errors"
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"os"
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"path/filepath"
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)
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//go:embed talk.png
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var PNG []byte
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// FileName is the icon's name in the config directory.
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const FileName = "talk.png"
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// Install writes the icon into dir (if missing or outdated) and returns its
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// path. Idempotent: an unchanged file is not touched.
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func Install(dir string) (string, error) {
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if dir == "" {
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return "", errors.New("icon: no directory")
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}
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path := filepath.Join(dir, FileName)
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if cur, err := os.ReadFile(path); err == nil && bytes.Equal(cur, PNG) {
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return path, nil
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}
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if err := os.MkdirAll(dir, 0o755); err != nil {
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return "", err
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}
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if err := os.WriteFile(path, PNG, 0o644); err != nil {
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return "", err
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}
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return path, nil
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}
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