Merge pull request #15 from svera/release-target

Release target

magefile.go

@@ -3,14 +3,17 @@
 package main
 
 import (
+	"archive/zip"
 	"fmt"
+	"io"
+	"os"
 
 	"github.com/magefile/mage/sh"
 )
 
 // Installs the application.
 func Install() error {
-	version, err := sh.Output("git", "describe", "--always", "--long", "--dirty")
+	version, err := version()
 	if err != nil {
 		return err
 	}
@@ -23,10 +26,39 @@ func Build(platform string) error {
 	if err != nil {
 		return err
 	}
-	version, err := sh.Output("git", "describe", "--always", "--long", "--dirty")
+	version, err := version()
 	if err != nil {
 		return err
 	}
+	return buildEnv(platform, version, envMap)
+}
+
+// Build binary files of the current version for all supported platforms and zip them
+func Release() error {
+	platforms := []string{"rpi32", "osxintel"}
+	version, err := version()
+	if err != nil {
+		return err
+	}
+	for _, platform := range platforms {
+		fmt.Printf("Building binary for %s\n", platform)
+		envMap, err := env(platform)
+		if err != nil {
+			return err
+		}
+		err = buildEnv(platform, version, envMap)
+		if err != nil {
+			return err
+		}
+		err = createZip("coreander", "coreander_"+version+"_"+platform+".zip")
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func buildEnv(platform, version string, envMap map[string]string) error {
 	return sh.RunWith(envMap, "go", "build", "-ldflags", "-X main.version="+version)
 }
 
@@ -49,3 +81,56 @@ func env(platform string) (map[string]string, error) {
 
 	return env, fmt.Errorf("Platform '%s' not supported", platform)
 }
+
+func createZip(fileName, zipFileName string) error {
+	zipFile, err := os.Create(zipFileName)
+	if err != nil {
+		return err
+	}
+	defer zipFile.Close()
+	w := zip.NewWriter(zipFile)
+	defer w.Close()
+
+	if err = addFileToZip(w, fileName); err != nil {
+		return err
+	}
+	return nil
+}
+
+func addFileToZip(zipWriter *zip.Writer, filename string) error {
+	fileToZip, err := os.Open(filename)
+	if err != nil {
+		return err
+	}
+	defer fileToZip.Close()
+
+	// Get the file information
+	info, err := fileToZip.Stat()
+	if err != nil {
+		return err
+	}
+
+	header, err := zip.FileInfoHeader(info)
+	if err != nil {
+		return err
+	}
+
+	// Using FileInfoHeader() above only uses the basename of the file. If we want
+	// to preserve the folder structure we can overwrite this with the full path.
+	header.Name = filename
+
+	// Change to deflate to gain better compression
+	// see http://golang.org/pkg/archive/zip/#pkg-constants
+	header.Method = zip.Deflate
+
+	writer, err := zipWriter.CreateHeader(header)
+	if err != nil {
+		return err
+	}
+	_, err = io.Copy(writer, fileToZip)
+	return err
+}
+
+func version() (string, error) {
+	return sh.Output("git", "describe", "--always", "--dirty", "--tags")
+}

main.go

@@ -74,7 +74,7 @@ func run(cfg Config, homeDir string, metadataReaders map[string]metadata.Reader,
 		fileWatcher(idx, cfg.LibPath)
 	}()
 	app := webserver.New(idx, cfg.LibPath, homeDir, version, metadataReaders, cfg.CoverMaxWidth)
-	fmt.Printf("Coreander version %s started listening on port %s\n--------------------------------------\n", version, cfg.Port)
+	fmt.Printf("Coreander version %s started listening on port %s\n\n", version, cfg.Port)
 	err = app.Listen(fmt.Sprintf(":%s", cfg.Port))
 	if err != nil {
 		log.Fatal(err)