Source: parse.go in package github.com/prometheus/procfs/internal/util

Copyright 2018 The Prometheus Authors Licensed 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 util

import (
	"io/ioutil"
	"strconv"
	"strings"
)

ParseUint32s parses a slice of strings into a slice of uint32s.

func ParseUint32s(ss []string) ([]uint32, error) {
	us := make([]uint32, 0, len(ss))
	for _, s := range ss {
		u, err := strconv.ParseUint(s, 10, 32)
		if err != nil {
			return nil, err
		}

		us = append(us, uint32(u))
	}

	return us, nil
}

ParseUint64s parses a slice of strings into a slice of uint64s.

func ParseUint64s(ss []string) ([]uint64, error) {
	us := make([]uint64, 0, len(ss))
	for _, s := range ss {
		u, err := strconv.ParseUint(s, 10, 64)
		if err != nil {
			return nil, err
		}

		us = append(us, u)
	}

	return us, nil
}

ParsePInt64s parses a slice of strings into a slice of int64 pointers.

func ParsePInt64s(ss []string) ([]*int64, error) {
	us := make([]*int64, 0, len(ss))
	for _, s := range ss {
		u, err := strconv.ParseInt(s, 10, 64)
		if err != nil {
			return nil, err
		}

		us = append(us, &u)
	}

	return us, nil
}

ReadUintFromFile reads a file and attempts to parse a uint64 from it.

func ReadUintFromFile(path string) (uint64, error) {
	data, err := ioutil.ReadFile(path)
	if err != nil {
		return 0, err
	}
	return strconv.ParseUint(strings.TrimSpace(string(data)), 10, 64)
}

ParseBool parses a string into a boolean pointer.

func ParseBool(b string) *bool {
	var truth bool
	switch b {
	case "enabled":
		truth = true
	case "disabled":
		truth = false
	default:
		return nil
	}
	return &truth