Add version command (#29)v0.6.1

1 files changed, 40 insertions, 0 deletions

diff --git a/cmd/version.go b/cmd/version.go
new file mode 100644
index 0000000..bb1e453
--- /dev/null
+++ b/cmd/version.go
@@ -0,0 +1,40 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package cmd
+
+import (
+	"fmt"
+	"runtime/debug"
+
+	"github.com/philippta/flyscrape"
+)
+
+type VersionCommand struct{}
+
+func (c *VersionCommand) Run(args []string) error {
+	info, ok := debug.ReadBuildInfo()
+	if !ok {
+		return fmt.Errorf("no build info found")
+	}
+
+	var os, arch, version string
+	for _, setting := range info.Settings {
+		switch setting.Key {
+		case "GOARCH":
+			arch = setting.Value
+		case "GOOS":
+			os = setting.Value
+		case "vcs.revision":
+			version = "v0.0.0-" + setting.Value
+		}
+	}
+
+	if flyscrape.Version != "" {
+		version = flyscrape.Version
+	}
+
+	fmt.Printf("flyscrape %s %s/%s\n", version, os, arch)
+	return nil
+}