| // Licensed to Apache Software Foundation (ASF) under one or more contributor |
| // license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright |
| // ownership. Apache Software Foundation (ASF) licenses this file to you under |
| // the Apache License, Version 2.0 (the "License"); you may |
| // not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| package timestamp |
| |
| import ( |
| "strconv" |
| "strings" |
| "time" |
| ) |
| |
| // ParseDuration parses a duration string. |
| // A duration string is a possibly signed sequence of |
| // decimal numbers, each with optional fraction and a unit suffix, |
| // such as "300ms", "-1.5h" or "2h45m". |
| // Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h", "d". |
| func ParseDuration(s string) (time.Duration, error) { |
| i := strings.Index(s, "d") |
| if i <= 0 { |
| return time.ParseDuration(s) |
| } |
| neg := false |
| if s != "" { |
| c := s[0] |
| if c == '-' || c == '+' { |
| neg = c == '-' |
| s = s[1:] |
| i-- |
| } |
| } |
| d, err := strconv.Atoi(s[:i]) |
| if neg { |
| d = -d |
| } |
| if err != nil { |
| return 0, err |
| } |
| return time.Hour * 24 * time.Duration(d), nil |
| } |