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45 lines
955 B
45 lines
955 B
package common
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import (
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"encoding/hex"
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"fmt"
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"strings"
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)
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// Fmt shorthand, XXX DEPRECATED
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var Fmt = fmt.Sprintf
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// RightPadString adds spaces to the right of a string to make it length totalLength
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func RightPadString(s string, totalLength int) string {
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remaining := totalLength - len(s)
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if remaining > 0 {
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s = s + strings.Repeat(" ", remaining)
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}
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return s
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}
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// LeftPadString adds spaces to the left of a string to make it length totalLength
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func LeftPadString(s string, totalLength int) string {
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remaining := totalLength - len(s)
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if remaining > 0 {
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s = strings.Repeat(" ", remaining) + s
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}
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return s
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}
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// IsHex returns true for non-empty hex-string prefixed with "0x"
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func IsHex(s string) bool {
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if len(s) > 2 && s[:2] == "0x" {
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_, err := hex.DecodeString(s[2:])
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return err == nil
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}
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return false
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}
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// StripHex returns hex string without leading "0x"
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func StripHex(s string) string {
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if IsHex(s) {
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return s[2:]
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}
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return s
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}
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