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59 lines
1.6 KiB
Go
59 lines
1.6 KiB
Go
// Derived from https://github.com/Crosse/font-install
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// Copyright 2020 Seth Wright <seth@crosse.org>
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package font
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path"
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"golang.org/x/sys/windows/registry"
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)
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// FontsDir denotes the path to the user's fonts directory on Linux.
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// Windows doesn't have the concept of a permanent, per-user collection
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// of fonts, meaning that all fonts are stored in the system-level fonts
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// directory, which is %WINDIR%\Fonts by default.
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var FontsDir = path.Join(os.Getenv("WINDIR"), "Fonts")
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func install(font *Font) (err error) {
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// To install a font on Windows:
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// - Copy the file to the fonts directory
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// - Create a registry entry for the font
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fullPath := path.Join(FontsDir, font.FileName)
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err = ioutil.WriteFile(fullPath, font.Data, 0644) //nolint:gosec
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if err != nil {
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return err
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}
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// Second, write metadata about the font to the registry.
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k, err := registry.OpenKey(registry.LOCAL_MACHINE, `SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts`, registry.WRITE)
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if err != nil {
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// If this fails, remove the font file as well.
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if nexterr := os.Remove(fullPath); nexterr != nil {
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return nexterr
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}
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return err
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}
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defer k.Close()
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// Apparently it's "ok" to mark an OpenType font as "TrueType",
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// and since this tool only supports True- and OpenType fonts,
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// this should be Okay(tm).
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// Besides, Windows does it, so why can't I?
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valueName := fmt.Sprintf("%v (TrueType)", font.FileName)
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if err = k.SetStringValue(font.Name, valueName); err != nil {
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// If this fails, remove the font file as well.
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if nexterr := os.Remove(fullPath); nexterr != nil {
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return nexterr
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}
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return err
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}
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return nil
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}
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