Add 'downloads' field in pkg.info

src/bpmlib/net.go

@@ -0,0 +1,61 @@
+package bpmlib
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path"
+	"strings"
+)
+
+func retrieveUrlData(u string) ([]byte, error) {
+	resp, err := http.Get(u)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	// Load data into byte buffer
+	buffer, err := io.ReadAll(resp.Body)
+
+	return buffer, nil
+}
+
+func downloadFile(u, filepath string, perm os.FileMode) error {
+	if strings.HasSuffix(filepath, "/") {
+		return fmt.Errorf("Filepath must not end in '/'")
+	}
+
+	data, err := retrieveUrlData(u)
+	if err != nil {
+		return err
+	}
+
+	// Create parent directories
+	err = os.MkdirAll(path.Dir(filepath), 0755)
+	if err != nil {
+		return err
+	}
+
+	// Create file
+	file, err := os.Create(filepath)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	// Copy data
+	_, err = file.Write(data)
+	if err != nil {
+		return err
+	}
+
+	// Set file permissions
+	err = file.Chmod(perm)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}