43 lines
868 B
Go
43 lines
868 B
Go
package utils
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import (
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"encoding/binary"
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"regexp"
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"strings"
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"unicode"
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"github.com/acarl005/stripansi"
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)
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func ClearUnprintableChars(s string, allowNewlines bool) string {
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// This will remove ANSI color codes.
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s = stripansi.Strip(s)
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return strings.Map(func(r rune) rune {
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if unicode.IsPrint(r) || (allowNewlines && r == '\n') {
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return r
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}
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return -1
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}, s)
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}
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var devNameRegexp = regexp.MustCompile(`^[0-9a-z_-]+$`)
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func ValidateDevName(s string) bool {
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// Allow mapped devices.
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s = strings.TrimPrefix(s, "mapper/")
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return devNameRegexp.MatchString(s)
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}
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var unixUsernameRegexp = regexp.MustCompile(`^[a-z_]([a-z0-9_-]{0,31}|[a-z0-9_-]{0,30}\$)$`)
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func ValidateUnixUsername(s string) bool {
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return unixUsernameRegexp.MatchString(s)
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}
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func Uint16ToBytesBE(v uint16) []byte {
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b := make([]byte, 2)
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binary.BigEndian.PutUint16(b, v)
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return b
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}
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