mirror of
https://github.com/kubesphere/kubekey.git
synced 2025-12-27 19:52:49 +00:00
139 lines
3.1 KiB
Go
139 lines
3.1 KiB
Go
/*
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Copyright 2021 The KubeSphere Authors.
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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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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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*/
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package util
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import (
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"bytes"
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"fmt"
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"math"
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"os"
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"os/exec"
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"os/user"
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"runtime"
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"sort"
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"strings"
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"text/template"
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"github.com/pkg/errors"
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)
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type Data map[string]interface{}
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// Render text template with given `variables` Render-context
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func Render(tmpl *template.Template, variables map[string]interface{}) (string, error) {
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var buf strings.Builder
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if err := tmpl.Execute(&buf, variables); err != nil {
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return "", errors.Wrap(err, "Failed to render template")
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}
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return buf.String(), nil
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}
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// Home returns the home directory for the executing user.
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func Home() (string, error) {
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u, err := user.Current()
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if nil == err {
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return u.HomeDir, nil
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}
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if "windows" == runtime.GOOS {
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return homeWindows()
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}
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return homeUnix()
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}
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func homeUnix() (string, error) {
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if home := os.Getenv("HOME"); home != "" {
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return home, nil
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}
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var stdout bytes.Buffer
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cmd := exec.Command("sh", "-c", "eval echo ~$USER")
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cmd.Stdout = &stdout
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if err := cmd.Run(); err != nil {
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return "", err
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}
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result := strings.TrimSpace(stdout.String())
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if result == "" {
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return "", errors.New("blank output when reading home directory")
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}
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return result, nil
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}
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func homeWindows() (string, error) {
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drive := os.Getenv("HOMEDRIVE")
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path := os.Getenv("HOMEPATH")
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home := drive + path
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if drive == "" || path == "" {
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home = os.Getenv("USERPROFILE")
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}
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if home == "" {
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return "", errors.New("HOMEDRIVE, HOMEPATH, and USERPROFILE are blank")
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}
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return home, nil
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}
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func GetArgs(argsMap map[string]string, args []string) ([]string, map[string]string) {
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targetMap := make(map[string]string, len(argsMap))
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for k, v := range argsMap {
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targetMap[k] = v
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}
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targetSlice := make([]string, len(args))
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copy(targetSlice, args)
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for _, arg := range targetSlice {
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splitArg := strings.SplitN(arg, "=", 2)
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if len(splitArg) < 2 {
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continue
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}
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targetMap[splitArg[0]] = splitArg[1]
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}
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for arg, value := range targetMap {
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cmd := fmt.Sprintf("%s=%s", arg, value)
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targetSlice = append(targetSlice, cmd)
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}
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sort.Strings(targetSlice)
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return targetSlice, targetMap
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}
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// Round returns the result of rounding 'val' according to the specified 'precision' precision (the number of digits after the decimal point)。
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// and precision can be negative number or zero
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func Round(val float64, precision int) float64 {
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p := math.Pow10(precision)
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return math.Floor(val*p+0.5) / p
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}
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// ArchAlias returns the alias of cpu's architecture.
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// amd64: x86_64
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// arm64: aarch64
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func ArchAlias(arch string) string {
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switch arch {
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case "amd64":
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return "x86_64"
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case "arm64":
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return "aarch64"
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default:
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return ""
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}
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}
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