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tea/cmd/flags/csvflag.go

50 lines
1.3 KiB
Go

// Copyright 2021 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package flags
import (
"fmt"
"strings"
"code.gitea.io/tea/modules/utils"
"github.com/urfave/cli/v2"
)
// CsvFlag is a wrapper around cli.StringFlag, with an added GetValues() method
// to retrieve comma separated string values as a slice.
type CsvFlag struct {
cli.StringFlag
AvailableFields []string
}
// NewCsvFlag creates a CsvFlag, while setting its usage string and default values
func NewCsvFlag(name, usage string, aliases, availableValues, defaults []string) *CsvFlag {
return &CsvFlag{
AvailableFields: availableValues,
StringFlag: cli.StringFlag{
Name: name,
Aliases: aliases,
Value: strings.Join(defaults, ","),
Usage: fmt.Sprintf(`Comma-separated list of %s. Available values:
%s
`, usage, strings.Join(availableValues, ",")),
},
}
}
// GetValues returns the value of the flag, parsed as a commaseparated list
func (f CsvFlag) GetValues(ctx *cli.Context) ([]string, error) {
val := ctx.String(f.Name)
selection := strings.Split(val, ",")
if f.AvailableFields != nil && val != "" {
for _, field := range selection {
if !utils.Contains(f.AvailableFields, field) {
return nil, fmt.Errorf("Invalid field '%s'", field)
}
}
}
return selection, nil
}