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weekday_func.go
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weekday_func.go
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// Mgmt
// Copyright (C) 2013-2021+ James Shubin and the project contributors
// Written by James Shubin <james@shubin.ca> and the project contributors
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package coredatetime
import (
"fmt"
"strings"
"time"
"github.com/purpleidea/mgmt/lang/funcs/simple"
"github.com/purpleidea/mgmt/lang/types"
)
func init() {
simple.ModuleRegister(ModuleName, "weekday", &types.FuncValue{
T: types.NewType("func(a int) str"),
V: Weekday,
})
}
// Weekday returns the lowercased day of the week corresponding to the input
// time. The time is the number of seconds since the epoch, and matches what
// comes from our Now function.
func Weekday(input []types.Value) (types.Value, error) {
epochDelta := input[0].Int()
if epochDelta < 0 {
return nil, fmt.Errorf("epoch delta must be positive")
}
weekday := time.Unix(epochDelta, 0).Weekday()
return &types.StrValue{
V: strings.ToLower(weekday.String()),
}, nil
}