New upstream version 1.0.0+git20171222.87b0d5e

1 files changed, 45 insertions, 0 deletions

diff --git a/net.go b/net.go
new file mode 100644
index 0000000..989c90d
--- /dev/null
+++ b/net.go
@@ -0,0 +1,45 @@
+package debos
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+	"os"
+)
+
+// Function for downloading single file object with http(s) protocol
+func DownloadHttpUrl(url, filename string) error {
+	log.Printf("Download started: '%s' -> '%s'\n", url, filename)
+
+	// TODO: Proxy support?
+
+	// Check if file object already exists.
+	fi, err := os.Stat(filename)
+	if !os.IsNotExist(err) && !fi.Mode().IsRegular() {
+		return fmt.Errorf("Failed to download '%s': '%s' exists and it is not a regular file\n", url, filename)
+	}
+
+	resp, err := http.Get(url)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("Url '%s' returned status code %d (%s)\n", url, resp.StatusCode, http.StatusText(resp.StatusCode))
+	}
+
+	// Output file
+	output, err := os.Create(filename)
+	if err != nil {
+		return err
+	}
+	defer output.Close()
+
+	if _, err := io.Copy(output, resp.Body); err != nil {
+		return err
+	}
+
+	return nil
+}