remote_host.go RawHistoryFolder

1package domain
2
3import (
4	"fmt"
5	"strings"
6	"unicode"
7)
8
9// RemoteHost is a merged remote host entry with its source markers.
10type RemoteHost struct {
11	Target       string
12	Pinned       bool
13	Learned      bool
14	Registration RemoteRegistration
15}
16
17// ValidateRemoteHostTarget rejects empty targets, surrounding/internal whitespace,
18// and control characters. SSH target grammar is left to OpenSSH.
19func ValidateRemoteHostTarget(target string) error {
20	if target == "" {
21		return fmt.Errorf("remote host target is empty")
22	}
23	if strings.TrimSpace(target) != target {
24		return fmt.Errorf("remote host target %q has surrounding whitespace", target)
25	}
26	for _, r := range target {
27		if unicode.IsSpace(r) || unicode.IsControl(r) {
28			return fmt.Errorf("remote host target %q contains whitespace or control characters", target)
29		}
30	}
31	return nil
32}
33
34// UniqueRemoteHostTargets returns a de-duplicated copy preserving first occurrence order.
35func UniqueRemoteHostTargets(values []string) []string {
36	seen := make(map[string]struct{}, len(values))
37	out := make([]string, 0, len(values))
38	for _, value := range values {
39		if _, ok := seen[value]; ok {
40			continue
41		}
42		seen[value] = struct{}{}
43		out = append(out, value)
44	}
45	return out
46}