git-age/cmd/identity.go

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package cmd
import (
"errors"
"fmt"
"os"
"path/filepath"
"strings"
"github.com/urfave/cli/v2"
)
var Identity = &cli.Command{
Name: "identity",
Aliases: []string{"ident"},
Description: "Manage identity files",
Flags: []cli.Flag{
&cli.BoolFlag{
Name: "remove",
Aliases: []string{"r"},
Usage: "Remove an identity file",
},
&cli.BoolFlag{
Name: "list",
Aliases: []string{"l"},
Usage: "List identity files",
},
},
Action: actionIdentity,
}
func actionIdentity(ctx *cli.Context) error {
keyFiles, err := listIdentities()
if err != nil && !errors.Is(err, ErrNoIdentities) {
return err
}
if ctx.Bool("list") {
return actionListIdentities(ctx, keyFiles)
}
if ctx.NArg() != 1 {
return errors.New("identity requires 1 argument")
}
file := ctx.Args().First()
if strings.HasPrefix(file, "~") {
home, err := os.UserHomeDir()
if err != nil {
return err
}
file = filepath.Join(home, strings.TrimPrefix(file, "~"))
}
file = os.ExpandEnv(file)
file, err = filepath.Abs(file)
if err != nil {
return err
}
exists := -1
for idx, keyFile := range keyFiles {
if file == keyFile {
exists = idx
break
}
}
if exists >= 0 && !ctx.Bool("remove") {
return fmt.Errorf("identity file %q already exists", file)
} else if exists == -1 && ctx.Bool("remove") {
return fmt.Errorf("identity file %q doesn't exist", file)
}
if ctx.Bool("remove") {
keyFiles = append(keyFiles[:exists], keyFiles[exists+1:]...)
} else {
if _, err := parseIdentityFile(file); err != nil {
return fmt.Errorf("could not add invalid identity file: %w", err)
}
keyFiles = append(keyFiles, file)
}
cmd("git", "config", "--unset-all", "git-age.identity")
for _, keyFile := range keyFiles {
if _, err := cmd("git", "config", "--add", "git-age.identity", keyFile); err != nil {
return err
}
}
return nil
}
func actionListIdentities(ctx *cli.Context, files []string) error {
var sb strings.Builder
for _, file := range files {
_, err := parseIdentityFile(file)
valid := "✓"
if err != nil {
valid = "x"
}
sb.WriteString(fmt.Sprintf("%s %q\n", valid, file))
}
fmt.Print(sb.String())
return nil
}