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123 lines
3.5 KiB
Go
123 lines
3.5 KiB
Go
// Copyright 2017 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package time provides template functions for measuring and displaying time.
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package time
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import (
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"fmt"
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"time"
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_time "time"
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"github.com/gohugoio/hugo/common/htime"
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"github.com/spf13/cast"
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)
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// New returns a new instance of the time-namespaced template functions.
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func New(timeFormatter htime.TimeFormatter, location *time.Location) *Namespace {
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return &Namespace{
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timeFormatter: timeFormatter,
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location: location,
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}
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}
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// Namespace provides template functions for the "time" namespace.
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type Namespace struct {
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timeFormatter htime.TimeFormatter
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location *time.Location
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}
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// AsTime converts the textual representation of the datetime string into
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// a time.Time interface.
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func (ns *Namespace) AsTime(v any, args ...any) (any, error) {
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loc := ns.location
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if len(args) > 0 {
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locStr, err := cast.ToStringE(args[0])
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if err != nil {
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return nil, err
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}
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loc, err = _time.LoadLocation(locStr)
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if err != nil {
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return nil, err
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}
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}
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return htime.ToTimeInDefaultLocationE(v, loc)
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}
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// Format converts the textual representation of the datetime string in v into
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// time.Time if needed and formats it with the given layout.
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func (ns *Namespace) Format(layout string, v any) (string, error) {
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t, err := htime.ToTimeInDefaultLocationE(v, ns.location)
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if err != nil {
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return "", err
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}
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return ns.timeFormatter.Format(t, layout), nil
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}
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// Now returns the current local time or `clock` time
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func (ns *Namespace) Now() _time.Time {
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return htime.Now()
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}
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// ParseDuration parses the duration string s.
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// A duration string is a possibly signed sequence of
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// decimal numbers, each with optional fraction and a unit suffix,
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// such as "300ms", "-1.5h" or "2h45m".
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// Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h".
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// See https://golang.org/pkg/time/#ParseDuration
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func (ns *Namespace) ParseDuration(s any) (_time.Duration, error) {
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ss, err := cast.ToStringE(s)
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if err != nil {
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return 0, err
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}
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return _time.ParseDuration(ss)
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}
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var durationUnits = map[string]_time.Duration{
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"nanosecond": _time.Nanosecond,
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"ns": _time.Nanosecond,
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"microsecond": _time.Microsecond,
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"us": _time.Microsecond,
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"µs": _time.Microsecond,
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"millisecond": _time.Millisecond,
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"ms": _time.Millisecond,
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"second": _time.Second,
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"s": _time.Second,
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"minute": _time.Minute,
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"m": _time.Minute,
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"hour": _time.Hour,
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"h": _time.Hour,
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}
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// Duration converts the given number to a time.Duration.
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// Unit is one of nanosecond/ns, microsecond/us/µs, millisecond/ms, second/s, minute/m or hour/h.
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func (ns *Namespace) Duration(unit any, number any) (_time.Duration, error) {
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unitStr, err := cast.ToStringE(unit)
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if err != nil {
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return 0, err
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}
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unitDuration, found := durationUnits[unitStr]
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if !found {
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return 0, fmt.Errorf("%q is not a valid duration unit", unit)
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}
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n, err := cast.ToInt64E(number)
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if err != nil {
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return 0, err
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}
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return _time.Duration(n) * unitDuration, nil
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}
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