Initial commit (#1)

* initial

pkg/scanner/utils/utils.go

@@ -0,0 +1,40 @@
+package utils
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/knqyf263/fanal/analyzer"
+
+	"github.com/knqyf263/go-version"
+	"github.com/knqyf263/trivy/pkg/log"
+)
+
+var (
+	replacer = strings.NewReplacer(".alpha", "-alpha", ".beta", "-beta", ".rc", "-rc")
+)
+
+func MatchVersions(currentVersion *version.Version, rangeVersions []string) bool {
+	for _, p := range rangeVersions {
+		c, err := version.NewConstraint(replacer.Replace(p))
+		if err != nil {
+			log.Logger.Debug("NewConstraint", "error", err)
+			return false
+		}
+		if c.Check(currentVersion) {
+			return true
+		}
+	}
+	return false
+}
+
+func FormatVersion(pkg analyzer.Package) string {
+	v := pkg.Version
+	if pkg.Release != "" {
+		v = fmt.Sprintf("%s-%s", v, pkg.Release)
+	}
+	if pkg.Epoch != 0 {
+		v = fmt.Sprintf("%d:%s", pkg.Epoch, v)
+	}
+	return v
+}