mirror of
https://github.com/amigan/aim-oscar-server.git
synced 2024-10-18 05:33:32 -04:00
67 lines
1.2 KiB
Go
67 lines
1.2 KiB
Go
package util
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import (
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"encoding/hex"
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"fmt"
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"strconv"
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"strings"
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)
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// splitBy splits string in chunks of n
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// taken from: https://stackoverflow.com/a/69403603
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func SplitBy(s string, n int) []string {
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var ss []string
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for i := 1; i < len(s); i++ {
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if i%n == 0 {
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ss = append(ss, s[:i])
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s = s[i:]
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i = 1
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}
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}
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ss = append(ss, s)
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return ss
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}
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func PrettyBytes(bytes []byte) string {
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hexStr := hex.EncodeToString(bytes)
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rows := SplitBy(hexStr, 16)
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res := ""
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for _, row := range rows {
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byteGroups := SplitBy(row, 2)
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// Align string view to full 16 bytes + spaces
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res += fmt.Sprintf("%-23s", strings.Join(byteGroups, " "))
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res += " |"
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for _, r := range byteGroups {
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n, err := strconv.ParseInt(r, 16, 8)
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if err != nil || (n < 32 || n > 126) {
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res += "."
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} else {
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res += string(rune(n))
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}
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}
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res += "|\n"
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}
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return strings.TrimSpace(res)
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}
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func PanicIfError(err error) {
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if err != nil {
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panic(err)
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}
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}
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func Word(x uint16) []byte {
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return []byte{byte(x >> 8), byte(x & 0xf)}
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}
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func Dword(x uint32) []byte {
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return []byte{byte(x >> 24), byte(x >> 16), byte(x >> 8), byte(x & 0xf)}
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}
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func LPString(x string) []byte {
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return append(Word(uint16(len(x))), []byte(x)...)
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}
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