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https://github.com/kubernetes/node-problem-detector.git
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a859b5f027
To do this I 1. changed the name in go.mod and the Go code that used it, 2. ran `go mod tidy -go=1.15` and 3. ran `go mod vendor`. Step 3 added another vendored dependency unrelated AFAIK to this change.
139 lines
3.1 KiB
Go
139 lines
3.1 KiB
Go
// osrelease is a go package to make reading the contents of os-release files easier
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//
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// See https://www.freedesktop.org/software/systemd/man/os-release.html
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package osrelease
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import (
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"bufio"
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"bytes"
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"errors"
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"os"
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"strings"
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)
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const EtcOsRelease string = "/etc/os-release"
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const UsrLibOsRelease string = "/usr/lib/os-release"
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// Read and return os-release, trying EtcOsRelease, followed by UsrLibOsRelease.
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// err will contain an error message if neither file exists or failed to parse
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func Read() (osrelease map[string]string, err error) {
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osrelease, err = ReadFile(EtcOsRelease)
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if err != nil {
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osrelease, err = ReadFile(UsrLibOsRelease)
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}
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return
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}
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// Similar to Read(), but takes the name of a file to load instead
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func ReadFile(filename string) (osrelease map[string]string, err error) {
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osrelease = make(map[string]string)
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err = nil
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lines, err := parseFile(filename)
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if err != nil {
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return
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}
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for _, v := range lines {
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key, value, err := parseLine(v)
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if err == nil {
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osrelease[key] = value
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}
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}
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return
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}
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// ReadString is similar to Read(), but takes a string to load instead
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func ReadString(content string) (osrelease map[string]string, err error) {
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osrelease = make(map[string]string)
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err = nil
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lines, err := parseString(content)
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if err != nil {
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return
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}
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for _, v := range lines {
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key, value, err := parseLine(v)
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if err == nil {
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osrelease[key] = value
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}
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}
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return
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}
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func parseFile(filename string) (lines []string, err error) {
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file, err := os.Open(filename)
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if err != nil {
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return nil, err
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}
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defer file.Close()
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scanner := bufio.NewScanner(file)
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for scanner.Scan() {
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lines = append(lines, scanner.Text())
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}
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return lines, scanner.Err()
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}
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func parseString(content string) (lines []string, err error) {
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in := bytes.NewBufferString(content)
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reader := bufio.NewReader(in)
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scanner := bufio.NewScanner(reader)
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for scanner.Scan() {
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lines = append(lines, scanner.Text())
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}
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return lines, scanner.Err()
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}
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func parseLine(line string) (key string, value string, err error) {
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err = nil
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// skip empty lines
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if len(line) == 0 {
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err = errors.New("Skipping: zero-length")
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return
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}
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// skip comments
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if line[0] == '#' {
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err = errors.New("Skipping: comment")
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return
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}
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// try to split string at the first '='
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splitString := strings.SplitN(line, "=", 2)
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if len(splitString) != 2 {
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err = errors.New("Can not extract key=value")
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return
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}
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// trim white space from key and value
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key = splitString[0]
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key = strings.Trim(key, " ")
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value = splitString[1]
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value = strings.Trim(value, " ")
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// Handle double quotes
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if strings.ContainsAny(value, `"`) {
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first := string(value[0:1])
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last := string(value[len(value)-1:])
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if first == last && strings.ContainsAny(first, `"'`) {
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value = strings.TrimPrefix(value, `'`)
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value = strings.TrimPrefix(value, `"`)
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value = strings.TrimSuffix(value, `'`)
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value = strings.TrimSuffix(value, `"`)
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}
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}
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// expand anything else that could be escaped
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value = strings.Replace(value, `\"`, `"`, -1)
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value = strings.Replace(value, `\$`, `$`, -1)
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value = strings.Replace(value, `\\`, `\`, -1)
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value = strings.Replace(value, "\\`", "`", -1)
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return
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}
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