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}
15
16// ValidateRemoteHostTarget rejects empty targets, surrounding/internal whitespace,
17// and control characters. SSH target grammar is left to OpenSSH.
18func ValidateRemoteHostTarget(target string) error {
19	if target == "" {
20		return fmt.Errorf("remote host target is empty")
21	}
22	if strings.TrimSpace(target) != target {
23		return fmt.Errorf("remote host target %q has surrounding whitespace", target)
24	}
25	for _, r := range target {
26		if unicode.IsSpace(r) || unicode.IsControl(r) {
27			return fmt.Errorf("remote host target %q contains whitespace or control characters", target)
28		}
29	}
30	return nil
31}
32
33// UniqueRemoteHostTargets returns a de-duplicated copy preserving first occurrence order.
34func UniqueRemoteHostTargets(values []string) []string {
35	seen := make(map[string]struct{}, len(values))
36	out := make([]string, 0, len(values))
37	for _, value := range values {
38		if _, ok := seen[value]; ok {
39			continue
40		}
41		seen[value] = struct{}{}
42		out = append(out, value)
43	}
44	return out
45}