|
| 1 | +package main |
| 2 | + |
| 3 | +import ( |
| 4 | + "encoding/json" |
| 5 | + "fmt" |
| 6 | + "io/ioutil" |
| 7 | + "net/http" |
| 8 | + "os" |
| 9 | + "time" |
| 10 | + "github.com/fatih/color" |
| 11 | + "github.com/olekukonko/tablewriter" |
| 12 | +) |
| 13 | + |
| 14 | +type PackageJson struct { |
| 15 | + Dependencies map[string]string `json:"dependencies"` |
| 16 | +} |
| 17 | + |
| 18 | +func main() { |
| 19 | + if len(os.Args) < 2 || os.Args[1] == "-h" || os.Args[1] == "-help" { |
| 20 | + displayHelp() |
| 21 | + return |
| 22 | + } |
| 23 | + |
| 24 | + packageJsonPath := os.Args[1] |
| 25 | + color.Cyan("Reading package.json from: %s", packageJsonPath) |
| 26 | + |
| 27 | + packageJson, err := readPackageJson(packageJsonPath) |
| 28 | + if err != nil { |
| 29 | + color.Red("Error reading package.json: %v", err) |
| 30 | + os.Exit(1) |
| 31 | + } |
| 32 | + |
| 33 | + color.Green("Successfully parsed package.json") |
| 34 | + fmt.Printf("Found %d dependencies\n\n", len(packageJson.Dependencies)) |
| 35 | + |
| 36 | + existCount := 0 |
| 37 | + notExistCount := 0 |
| 38 | + |
| 39 | + for name, version := range packageJson.Dependencies { |
| 40 | + fmt.Printf("Checking %s (version %s): ", name, version) |
| 41 | + exists, err := checkPackageExists(name) |
| 42 | + if err != nil { |
| 43 | + color.Red("Error: %v", err) |
| 44 | + continue |
| 45 | + } |
| 46 | + if exists { |
| 47 | + color.Green("✔ Exists") |
| 48 | + existCount++ |
| 49 | + } else { |
| 50 | + color.Red("✘ Does not exist") |
| 51 | + notExistCount++ |
| 52 | + } |
| 53 | + time.Sleep(100 * time.Millisecond) // To prevent rate limiting |
| 54 | + } |
| 55 | + |
| 56 | + fmt.Printf("\nSummary:\n") |
| 57 | + color.Green(" ✔ %d packages exist", existCount) |
| 58 | + color.Red(" ✘ %d packages do not exist", notExistCount) |
| 59 | +} |
| 60 | + |
| 61 | +func readPackageJson(path string) (PackageJson, error) { |
| 62 | + var packageJson PackageJson |
| 63 | + |
| 64 | + data, err := ioutil.ReadFile(path) |
| 65 | + if err != nil { |
| 66 | + return packageJson, err |
| 67 | + } |
| 68 | + |
| 69 | + err = json.Unmarshal(data, &packageJson) |
| 70 | + if err != nil { |
| 71 | + return packageJson, err |
| 72 | + } |
| 73 | + |
| 74 | + return packageJson, nil |
| 75 | +} |
| 76 | + |
| 77 | +func checkPackageExists(name string) (bool, error) { |
| 78 | + url := fmt.Sprintf("https://registry.npmjs.org/%s", name) |
| 79 | + resp, err := http.Get(url) |
| 80 | + if err != nil { |
| 81 | + return false, err |
| 82 | + } |
| 83 | + defer resp.Body.Close() |
| 84 | + |
| 85 | + return resp.StatusCode == http.StatusOK, nil |
| 86 | +} |
| 87 | + |
| 88 | +func displayHelp() { |
| 89 | + logo := ` |
| 90 | +_ _ ____ __ __ ____ _ _ _____ ____ _ _______ ____ |
| 91 | +| \ | | _ \| \/ | / ___| | | | ____/ ___| |/ / ____| _ \ |
| 92 | +| \| | |_) | |\/| | | | | |_| | _|| | | ' /| _| | |_) | |
| 93 | +| |\ | __/| | | | | |___| ___ | |__| |___| . \| |___| _ < |
| 94 | +|_| \_|_| |_| |_| \____|_| |_|_____\____|_|\_\_____|_| \_\ |
| 95 | +` |
| 96 | + fmt.Println(logo) |
| 97 | + color.Cyan("Developed by gri0t") |
| 98 | + fmt.Println() |
| 99 | + |
| 100 | + color.Yellow("Description:") |
| 101 | + fmt.Println("npm-checker is a tool to validate dependencies in a package.json file against the npm registry.") |
| 102 | + fmt.Println() |
| 103 | + |
| 104 | + color.Yellow("Usage:") |
| 105 | + table := tablewriter.NewWriter(os.Stdout) |
| 106 | + table.SetHeader([]string{"Command", "Description"}) |
| 107 | + table.SetBorder(false) |
| 108 | + table.Append([]string{"npm-checker /path/to/package.json", "Check dependencies in the specified package.json file"}) |
| 109 | + table.Append([]string{"npm-checker -h, npm-checker -help", "Display this help message"}) |
| 110 | + table.Render() |
| 111 | + fmt.Println() |
| 112 | + |
| 113 | + color.Yellow("Example:") |
| 114 | + fmt.Println("npm-checker /path/to/package.json") |
| 115 | + fmt.Println() |
| 116 | +} |
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