tobias
1cbf8afb4a
- Untrack and delete compiled binaries (tarsum, gosoft.exe, rust uniq/uniq2);
ignore build outputs (dist/, bin/, *.exe, *.test, .ruff_cache/)
- Merge tools/go/ and projects/go-tools/go/ into projects/go-tools/<name>/
- Fix goipgrep .gitignore: bare 'ipgrep' pattern was ignoring cmd/ipgrep/,
so the main entrypoint was never tracked; now anchored to /ipgrep
- Archive duplicate implementations to archive/experimental/{rust,go}/
(uniq, between, tarsum rewrites); canonical versions stay in tools/
- Update README tool catalog to match new layout
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
44 lines
854 B
Go
44 lines
854 B
Go
package normalize
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import (
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"strings"
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)
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// NormalizeMAC converts supported MAC forms to canonical lower-case colon-separated form.
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// Accepts: xx:xx:xx:xx:xx:xx, xx-xx-xx-xx-xx-xx, xxxx.xxxx.xxxx
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func NormalizeMAC(s string) (string, bool) {
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s = strings.TrimSpace(s)
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if s == "" {
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return "", false
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}
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s = strings.ToLower(s)
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// remove common separators
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s = strings.ReplaceAll(s, ":", "")
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s = strings.ReplaceAll(s, "-", "")
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s = strings.ReplaceAll(s, ".", "")
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if len(s) != 12 {
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return "", false
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}
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for i := 0; i < 12; i++ {
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c := s[i]
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if (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') {
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continue
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}
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return "", false
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}
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// canonical form aa:bb:cc:dd:ee:ff
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var b strings.Builder
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b.Grow(17)
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for i := 0; i < 12; i += 2 {
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if i > 0 {
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b.WriteByte(':')
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}
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b.WriteByte(s[i])
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b.WriteByte(s[i+1])
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}
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return b.String(), true
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}
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