Related to #83

.gitignore

@@ -0,0 +1,2 @@
+hugo
+hugo.gz

build/main.go

@@ -0,0 +1,64 @@
+package main
+
+import (
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+)
+
+func main() {
+	goPath := os.Getenv("GOPATH")
+	hugoPath := filepath.Join(goPath, "src/github.com/spf13/hugo")
+
+	if found, err := exists(hugoPath); !found || err != nil {
+		log.Fatalf("Aborting. Can't find Hugo source on %s.", hugoPath)
+	}
+
+	// NOTE: I assume that 'go get -u' was run before of this and that
+	// every package and dependency is up to date.
+
+	// Get new tags from remote
+	run("git", []string{"fetch", "--tags"}, hugoPath)
+
+	// Get the revision for the latest tag
+	commit := run("git", []string{"rev-list", "--tags", "--max-count=1"}, hugoPath)
+
+	// Get the latest tag
+	tag := run("git", []string{"describe", "--tags", commit}, hugoPath)
+
+	// Checkout the latest tag
+	run("git", []string{"checkout", tag}, hugoPath)
+
+	// Build hugo binary
+	pluginPath := filepath.Join(goPath, "src/github.com/hacdias/caddy-hugo")
+	run("go", []string{"build", "-o", "assets/hugo", "github.com/spf13/hugo"}, pluginPath)
+}
+
+func run(command string, args []string, path string) string {
+	cmd := exec.Command(command, args...)
+	cmd.Dir = path
+	out, err := cmd.Output()
+
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	return strings.TrimSpace(string(out))
+}
+
+// exists returns whether the given file or directory exists or not
+func exists(path string) (bool, error) {
+	_, err := os.Stat(path)
+
+	if err == nil {
+		return true, nil
+	}
+
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+
+	return true, err
+}