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| 1 | +package uv_installer |
| 2 | + |
| 3 | +import ( |
| 4 | + "archive/zip" |
| 5 | + "encoding/json" |
| 6 | + "fmt" |
| 7 | + "io" |
| 8 | + "net/http" |
| 9 | + "os" |
| 10 | + "path/filepath" |
| 11 | + "runtime" |
| 12 | + "strings" |
| 13 | +) |
| 14 | + |
| 15 | +type GitHubRelease struct { |
| 16 | + TagName string `json:"tag_name"` |
| 17 | + Assets []struct { |
| 18 | + Name string `json:"name"` |
| 19 | + BrowserDownloadURL string `json:"browser_download_url"` |
| 20 | + } `json:"assets"` |
| 21 | +} |
| 22 | + |
| 23 | +// getLatestUVRelease fetches the latest uv release info from GitHub |
| 24 | +func getLatestUVRelease() (*GitHubRelease, error) { |
| 25 | + resp, err := http.Get("https://api.github.com/repos/astral-sh/uv/releases/latest") |
| 26 | + if err != nil { |
| 27 | + return nil, fmt.Errorf("failed to fetch release info: %v", err) |
| 28 | + } |
| 29 | + defer resp.Body.Close() |
| 30 | + |
| 31 | + var release GitHubRelease |
| 32 | + if err := json.NewDecoder(resp.Body).Decode(&release); err != nil { |
| 33 | + return nil, fmt.Errorf("failed to parse release info: %v", err) |
| 34 | + } |
| 35 | + |
| 36 | + return &release, nil |
| 37 | +} |
| 38 | + |
| 39 | +// getUVArchitecture returns the appropriate uv architecture string |
| 40 | +func getUVArchitecture() string { |
| 41 | + switch runtime.GOARCH { |
| 42 | + case "amd64": |
| 43 | + return "x86_64-pc-windows-msvc" |
| 44 | + case "386": |
| 45 | + return "i686-pc-windows-msvc" |
| 46 | + case "arm64": |
| 47 | + return "aarch64-pc-windows-msvc" |
| 48 | + default: |
| 49 | + return "x86_64-pc-windows-msvc" |
| 50 | + } |
| 51 | +} |
| 52 | + |
| 53 | +// downloadUV downloads the uv binary for the current platform |
| 54 | +func downloadUV(release *GitHubRelease) (string, error) { |
| 55 | + arch := getUVArchitecture() |
| 56 | + assetName := fmt.Sprintf("uv-%s.zip", arch) |
| 57 | + |
| 58 | + var downloadURL string |
| 59 | + for _, asset := range release.Assets { |
| 60 | + if asset.Name == assetName { |
| 61 | + downloadURL = asset.BrowserDownloadURL |
| 62 | + break |
| 63 | + } |
| 64 | + } |
| 65 | + |
| 66 | + if downloadURL == "" { |
| 67 | + return "", fmt.Errorf("could not find asset for architecture: %s", arch) |
| 68 | + } |
| 69 | + |
| 70 | + tempDir, err := os.MkdirTemp("", "uv-download") |
| 71 | + if err != nil { |
| 72 | + return "", fmt.Errorf("failed to create temp directory: %v", err) |
| 73 | + } |
| 74 | + |
| 75 | + zipPath := filepath.Join(tempDir, "uv.zip") |
| 76 | + resp, err := http.Get(downloadURL) |
| 77 | + if err != nil { |
| 78 | + return "", fmt.Errorf("failed to download uv: %v", err) |
| 79 | + } |
| 80 | + defer resp.Body.Close() |
| 81 | + |
| 82 | + out, err := os.Create(zipPath) |
| 83 | + if err != nil { |
| 84 | + return "", fmt.Errorf("failed to create zip file: %v", err) |
| 85 | + } |
| 86 | + defer out.Close() |
| 87 | + |
| 88 | + _, err = io.Copy(out, resp.Body) |
| 89 | + if err != nil { |
| 90 | + return "", fmt.Errorf("failed to write zip file: %v", err) |
| 91 | + } |
| 92 | + |
| 93 | + return zipPath, nil |
| 94 | +} |
| 95 | + |
| 96 | +// extractUV extracts uv binaries from the zip file |
| 97 | +func extractUV(zipPath, destDir string) error { |
| 98 | + reader, err := zip.OpenReader(zipPath) |
| 99 | + if err != nil { |
| 100 | + return fmt.Errorf("failed to open zip file: %v", err) |
| 101 | + } |
| 102 | + defer reader.Close() |
| 103 | + |
| 104 | + if err := os.MkdirAll(destDir, 0755); err != nil { |
| 105 | + return fmt.Errorf("failed to create destination directory: %v", err) |
| 106 | + } |
| 107 | + |
| 108 | + for _, file := range reader.File { |
| 109 | + if file.FileInfo().IsDir() { |
| 110 | + continue |
| 111 | + } |
| 112 | + |
| 113 | + // Only extract .exe files |
| 114 | + if !strings.HasSuffix(file.Name, ".exe") { |
| 115 | + continue |
| 116 | + } |
| 117 | + |
| 118 | + fileName := filepath.Base(file.Name) |
| 119 | + destPath := filepath.Join(destDir, fileName) |
| 120 | + |
| 121 | + rc, err := file.Open() |
| 122 | + if err != nil { |
| 123 | + return fmt.Errorf("failed to open file in zip: %v", err) |
| 124 | + } |
| 125 | + |
| 126 | + outFile, err := os.Create(destPath) |
| 127 | + if err != nil { |
| 128 | + rc.Close() |
| 129 | + return fmt.Errorf("failed to create output file: %v", err) |
| 130 | + } |
| 131 | + |
| 132 | + _, err = io.Copy(outFile, rc) |
| 133 | + rc.Close() |
| 134 | + outFile.Close() |
| 135 | + if err != nil { |
| 136 | + return fmt.Errorf("failed to copy file: %v", err) |
| 137 | + } |
| 138 | + } |
| 139 | + |
| 140 | + return nil |
| 141 | +} |
| 142 | + |
| 143 | +// getUVInstallDir returns the installation directory for uv |
| 144 | +func getUVInstallDir() (string, error) { |
| 145 | + home, err := os.UserHomeDir() |
| 146 | + if err != nil { |
| 147 | + return "", fmt.Errorf("failed to get home directory: %v", err) |
| 148 | + } |
| 149 | + |
| 150 | + return filepath.Join(home, ".local", "bin"), nil |
| 151 | +} |
| 152 | + |
| 153 | +// InstallUVFromSource downloads and installs the latest uv release |
| 154 | +func InstallUVFromSource() error { |
| 155 | + fmt.Println("Fetching latest uv release...") |
| 156 | + release, err := getLatestUVRelease() |
| 157 | + if err != nil { |
| 158 | + return err |
| 159 | + } |
| 160 | + |
| 161 | + fmt.Printf("Downloading uv %s...\n", release.TagName) |
| 162 | + zipPath, err := downloadUV(release) |
| 163 | + if err != nil { |
| 164 | + return err |
| 165 | + } |
| 166 | + defer os.RemoveAll(filepath.Dir(zipPath)) |
| 167 | + |
| 168 | + installDir, err := getUVInstallDir() |
| 169 | + if err != nil { |
| 170 | + return err |
| 171 | + } |
| 172 | + |
| 173 | + fmt.Printf("Installing to %s...\n", installDir) |
| 174 | + if err := extractUV(zipPath, installDir); err != nil { |
| 175 | + return err |
| 176 | + } |
| 177 | + |
| 178 | + fmt.Printf("Successfully installed uv %s\n", release.TagName) |
| 179 | + return nil |
| 180 | +} |
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