blob: 22cb07a6bbb5f8a2cad05ffcb8bea8658014e332 [file] [log] [blame]
khenaidoo26721882021-08-11 17:42:52 -04001// Copyright 2018 The Prometheus Authors
2// Licensed under the Apache License, Version 2.0 (the "License");
3// you may not use this file except in compliance with the License.
4// You may obtain a copy of the License at
5//
6// http://www.apache.org/licenses/LICENSE-2.0
7//
8// Unless required by applicable law or agreed to in writing, software
9// distributed under the License is distributed on an "AS IS" BASIS,
10// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11// See the License for the specific language governing permissions and
12// limitations under the License.
13
14package util
15
16import (
17 "io/ioutil"
18 "strconv"
19 "strings"
20)
21
22// ParseUint32s parses a slice of strings into a slice of uint32s.
23func ParseUint32s(ss []string) ([]uint32, error) {
24 us := make([]uint32, 0, len(ss))
25 for _, s := range ss {
26 u, err := strconv.ParseUint(s, 10, 32)
27 if err != nil {
28 return nil, err
29 }
30
31 us = append(us, uint32(u))
32 }
33
34 return us, nil
35}
36
37// ParseUint64s parses a slice of strings into a slice of uint64s.
38func ParseUint64s(ss []string) ([]uint64, error) {
39 us := make([]uint64, 0, len(ss))
40 for _, s := range ss {
41 u, err := strconv.ParseUint(s, 10, 64)
42 if err != nil {
43 return nil, err
44 }
45
46 us = append(us, u)
47 }
48
49 return us, nil
50}
51
52// ParsePInt64s parses a slice of strings into a slice of int64 pointers.
53func ParsePInt64s(ss []string) ([]*int64, error) {
54 us := make([]*int64, 0, len(ss))
55 for _, s := range ss {
56 u, err := strconv.ParseInt(s, 10, 64)
57 if err != nil {
58 return nil, err
59 }
60
61 us = append(us, &u)
62 }
63
64 return us, nil
65}
66
67// ReadUintFromFile reads a file and attempts to parse a uint64 from it.
68func ReadUintFromFile(path string) (uint64, error) {
69 data, err := ioutil.ReadFile(path)
70 if err != nil {
71 return 0, err
72 }
73 return strconv.ParseUint(strings.TrimSpace(string(data)), 10, 64)
74}
75
76// ReadIntFromFile reads a file and attempts to parse a int64 from it.
77func ReadIntFromFile(path string) (int64, error) {
78 data, err := ioutil.ReadFile(path)
79 if err != nil {
80 return 0, err
81 }
82 return strconv.ParseInt(strings.TrimSpace(string(data)), 10, 64)
83}
84
85// ParseBool parses a string into a boolean pointer.
86func ParseBool(b string) *bool {
87 var truth bool
88 switch b {
89 case "enabled":
90 truth = true
91 case "disabled":
92 truth = false
93 default:
94 return nil
95 }
96 return &truth
97}