| 1 | //go:build windows && !native_webview2loader |
| 2 | |
| 3 | package webviewloader |
| 4 | |
| 5 | import ( |
| 6 | "errors" |
| 7 | "fmt" |
| 8 | "strconv" |
| 9 | "strings" |
| 10 | ) |
| 11 | |
| 12 | // UsingGoWebview2Loader is set to true when the go webview2loader is used. |
| 13 | var UsingGoWebview2Loader bool |
| 14 | |
| 15 | // CompareBrowserVersions will compare the 2 given versions and return: |
| 16 | // |
| 17 | // -1 = v1 < v2 |
| 18 | // 0 = v1 == v2 |
| 19 | // 1 = v1 > v2 |
| 20 | func CompareBrowserVersions(v1 string, v2 string) (int, error) { |
| 21 | v, err := parseVersion(v1) |
| 22 | if err != nil { |
| 23 | return 0, fmt.Errorf("v1 invalid: %w", err) |
| 24 | } |
| 25 | |
| 26 | w, err := parseVersion(v2) |
| 27 | if err != nil { |
| 28 | return 0, fmt.Errorf("v2 invalid: %w", err) |
| 29 | } |
| 30 | |
| 31 | return v.compare(w), nil |
| 32 | } |
| 33 | |
| 34 | // GetAvailableCoreWebView2BrowserVersionString get the browser version info including channel name |
| 35 | // if it is the WebView2 Runtime. |
| 36 | // Channel names are Beta, Dev, and Canary. |
| 37 | func GetAvailableCoreWebView2BrowserVersionString(browserExecutableFolder string) (string, error) { |
| 38 | if browserExecutableFolder != "" { |
| 39 | clientPath, err := findEmbeddedClientDll(browserExecutableFolder) |
| 40 | if errors.Is(err, errNoClientDLLFound) { |
| 41 | // WebView2 is not found |
| 42 | return "", nil |
| 43 | } else if err != nil { |
| 44 | return "", err |
| 45 | } |
| 46 | |
| 47 | return findEmbeddedBrowserVersion(clientPath) |
| 48 | } |
| 49 | |
| 50 | _, version, err := findInstalledClientDll(false) |
| 51 | if errors.Is(err, errNoClientDLLFound) { |
| 52 | return "", nil |
| 53 | } else if err != nil { |
| 54 | return "", err |
| 55 | } |
| 56 | |
| 57 | return version.String(), nil |
| 58 | } |
| 59 | |
| 60 | type version struct { |
| 61 | major int |
| 62 | minor int |
| 63 | patch int |
| 64 | build int |
| 65 | |
| 66 | channel string |
| 67 | } |
| 68 | |
| 69 | func (v version) String() string { |
| 70 | vv := fmt.Sprintf("%d.%d.%d.%d", v.major, v.minor, v.patch, v.build) |
| 71 | if v.channel != "" { |
| 72 | vv += " " + v.channel |
| 73 | } |
| 74 | |
| 75 | return vv |
| 76 | } |
| 77 | |
| 78 | func (v version) compare(o version) int { |
| 79 | if c := compareInt(v.major, o.major); c != 0 { |
| 80 | return c |
| 81 | } |
| 82 | if c := compareInt(v.minor, o.minor); c != 0 { |
| 83 | return c |
| 84 | } |
| 85 | if c := compareInt(v.patch, o.patch); c != 0 { |
| 86 | return c |
| 87 | } |
| 88 | return compareInt(v.build, o.build) |
| 89 | } |
| 90 | |
| 91 | func parseVersion(v string) (version, error) { |
| 92 | var p version |
| 93 | |
| 94 | // Split away channel information... |
| 95 | if i := strings.Index(v, " "); i > 0 { |
| 96 | p.channel = v[i+1:] |
| 97 | v = v[:i] |
| 98 | } |
| 99 | |
| 100 | vv := strings.Split(v, ".") |
| 101 | if len(vv) > 4 { |
| 102 | return p, fmt.Errorf("too many version parts") |
| 103 | } |
| 104 | |
| 105 | var err error |
| 106 | vv, p.major, err = parseInt(vv) |
| 107 | if err != nil { |
| 108 | return p, fmt.Errorf("bad major version: %w", err) |
| 109 | } |
| 110 | |
| 111 | vv, p.minor, err = parseInt(vv) |
| 112 | if err != nil { |
| 113 | return p, fmt.Errorf("bad minor version: %w", err) |
| 114 | } |
| 115 | |
| 116 | vv, p.patch, err = parseInt(vv) |
| 117 | if err != nil { |
| 118 | return p, fmt.Errorf("bad patch version: %w", err) |
| 119 | } |
| 120 | |
| 121 | _, p.build, err = parseInt(vv) |
| 122 | if err != nil { |
| 123 | return p, fmt.Errorf("bad build version: %w", err) |
| 124 | } |
| 125 | |
| 126 | return p, nil |
| 127 | } |
| 128 | |
| 129 | func parseInt(v []string) ([]string, int, error) { |
| 130 | if len(v) == 0 { |
| 131 | return nil, 0, nil |
| 132 | } |
| 133 | |
| 134 | p, err := strconv.ParseInt(v[0], 10, 32) |
| 135 | if err != nil { |
| 136 | return nil, 0, err |
| 137 | } |
| 138 | return v[1:], int(p), nil |
| 139 | } |
| 140 | |
| 141 | func compareInt(v1, v2 int) int { |
| 142 | if v1 == v2 { |
| 143 | return 0 |
| 144 | } |
| 145 | if v1 < v2 { |
| 146 | return -1 |
| 147 | } else { |
| 148 | return +1 |
| 149 | } |
| 150 | } |
| 151 |