| 1 | package bootstrap |
| 2 | |
| 3 | import ( |
| 4 | "fmt" |
| 5 | "strings" |
| 6 | ) |
| 7 | |
| 8 | // ParseUname maps `uname -sm` output to Go GOOS/GOARCH. V1 supports Linux and |
| 9 | // macOS remotes; anything else (including Windows shells) is an error. |
| 10 | func ParseUname(out string) (goos, goarch string, err error) { |
| 11 | fields := strings.Fields(strings.TrimSpace(out)) |
| 12 | if len(fields) < 2 { |
| 13 | return "", "", fmt.Errorf("bootstrap: cannot parse `uname -sm` output %q", out) |
| 14 | } |
| 15 | sys, machine := fields[0], fields[1] |
| 16 | switch strings.ToLower(sys) { |
| 17 | case "linux": |
| 18 | goos = "linux" |
| 19 | case "darwin": |
| 20 | goos = "darwin" |
| 21 | default: |
| 22 | return "", "", fmt.Errorf("bootstrap: unsupported remote OS %q (V1 supports Linux and macOS)", sys) |
| 23 | } |
| 24 | switch strings.ToLower(machine) { |
| 25 | case "x86_64", "amd64": |
| 26 | goarch = "amd64" |
| 27 | case "aarch64", "arm64": |
| 28 | goarch = "arm64" |
| 29 | case "armv7l", "armv6l", "arm": |
| 30 | goarch = "arm" |
| 31 | default: |
| 32 | return "", "", fmt.Errorf("bootstrap: unsupported remote architecture %q", machine) |
| 33 | } |
| 34 | return goos, goarch, nil |
| 35 | } |
| 36 | |
| 37 | // ParseVersion extracts a semver-ish string from `reasonix --version` output |
| 38 | // like "reasonix v1.9.0" or "1.9.0". |
| 39 | func ParseVersion(out string) (string, error) { |
| 40 | for _, field := range strings.Fields(strings.TrimSpace(out)) { |
| 41 | v := strings.TrimPrefix(field, "v") |
| 42 | if looksLikeSemver(v) { |
| 43 | return v, nil |
| 44 | } |
| 45 | } |
| 46 | return "", fmt.Errorf("bootstrap: no version found in %q", out) |
| 47 | } |
| 48 | |
| 49 | func looksLikeSemver(v string) bool { |
| 50 | parts := strings.SplitN(v, "-", 2)[0] |
| 51 | seg := strings.Split(parts, ".") |
| 52 | if len(seg) < 2 { |
| 53 | return false |
| 54 | } |
| 55 | for _, s := range seg { |
| 56 | if s == "" { |
| 57 | return false |
| 58 | } |
| 59 | for _, r := range s { |
| 60 | if r < '0' || r > '9' { |
| 61 | return false |
| 62 | } |
| 63 | } |
| 64 | } |
| 65 | return true |
| 66 | } |
| 67 | |
| 68 | // CompareVersions returns -1, 0, or 1 comparing dotted numeric versions. |
| 69 | // Pre-release suffixes (after '-') are ignored for ordering. Non-numeric or |
| 70 | // missing segments compare as 0. |
| 71 | func CompareVersions(a, b string) int { |
| 72 | as := versionSegments(a) |
| 73 | bs := versionSegments(b) |
| 74 | for i := 0; i < len(as) || i < len(bs); i++ { |
| 75 | var av, bv int |
| 76 | if i < len(as) { |
| 77 | av = as[i] |
| 78 | } |
| 79 | if i < len(bs) { |
| 80 | bv = bs[i] |
| 81 | } |
| 82 | if av < bv { |
| 83 | return -1 |
| 84 | } |
| 85 | if av > bv { |
| 86 | return 1 |
| 87 | } |
| 88 | } |
| 89 | return 0 |
| 90 | } |
| 91 | |
| 92 | func versionSegments(v string) []int { |
| 93 | v = strings.TrimPrefix(strings.TrimSpace(v), "v") |
| 94 | v = strings.SplitN(v, "-", 2)[0] |
| 95 | parts := strings.Split(v, ".") |
| 96 | out := make([]int, 0, len(parts)) |
| 97 | for _, p := range parts { |
| 98 | n := 0 |
| 99 | for _, r := range p { |
| 100 | if r < '0' || r > '9' { |
| 101 | n = 0 |
| 102 | break |
| 103 | } |
| 104 | n = n*10 + int(r-'0') |
| 105 | } |
| 106 | out = append(out, n) |
| 107 | } |
| 108 | return out |
| 109 | } |
| 110 |