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args.go
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args.go
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// Copyright (c) 2022 Gobalsky Labs Limited
//
// Use of this software is governed by the Business Source License included
// in the LICENSE file and at https://www.mariadb.com/bsl11.
//
// Change Date: 18 months from the later of the date of the first publicly
// available Distribution of this version of the repository, and 25 June 2022.
//
// On the date above, in accordance with the Business Source License, use
// of this software will be governed by version 3 or later of the GNU General
// Public License.
package visor
import (
"fmt"
"strings"
)
// TODO make these functions more robust.
type Args []string
func (a Args) indexOf(name string) int {
for i, arg := range a {
if strings.Contains(arg, name) {
return i
}
}
return -1
}
func (a Args) Exists(name string) bool {
return a.indexOf(name) != -1
}
// Set sets a new argument. Ignores if argument exists.
func (a *Args) Set(name, value string) bool {
if a.Exists(name) {
return false
}
if name[0:2] != "--" {
name = fmt.Sprintf("--%s", name)
}
*a = append(*a, name, value)
return true
}
// ForceSet sets a new argument even if the argument currently exists.
func (a *Args) ForceSet(name, value string) bool {
if name[0:2] != "--" {
name = fmt.Sprintf("--%s", name)
}
*a = append(*a, name, value)
return true
}
// GetFlagWithArg finds and returns a flag with it's argument.
// Returns nil if not found.
// Example: --home /path.
func (a Args) GetFlagWithArg(name string) []string {
if name[0:2] != "--" {
name = fmt.Sprintf("--%s", name)
}
i := a.indexOf(name)
if i == -1 {
return nil
}
// Check if there is a flag's paramater available
if len(a) < i+2 {
return nil
}
return a[i : i+2]
}