1 files changed, 57 insertions, 0 deletions
diff --git a/s3_path.go b/s3_path.go
new file mode 100644
index 0000000..e1933ef
--- /dev/null
+++ b/s3_path.go
@@ -0,0 +1,57 @@
+package main
+
+import (
+	"path"
+	"strings"
+
+	"github.com/minio/minio-go/v7"
+)
+
+type S3Class int
+
+const (
+	ROOT S3Class = 1 << iota
+	BUCKET
+	COMMON_PREFIX
+	OBJECT
+	OPAQUE_KEY
+
+	KEY = COMMON_PREFIX | OBJECT | OPAQUE_KEY
+)
+
+type S3Path struct {
+	path   string
+	class  S3Class
+	bucket string
+	key    string
+}
+
+func NewS3Path(path string) S3Path {
+	exploded_path := strings.SplitN(path, "/", 3)
+
+	// If there is no bucket name (eg. "/")
+	if len(exploded_path) < 2 || exploded_path[1] == "" {
+		return S3Path{path, ROOT, "", ""}
+	}
+
+	// If there is no key
+	if len(exploded_path) < 3 || exploded_path[2] == "" {
+		return S3Path{path, BUCKET, exploded_path[1], ""}
+	}
+
+	return S3Path{path, OPAQUE_KEY, exploded_path[1], exploded_path[2]}
+}
+
+func NewTrustedS3Path(bucket string, obj minio.ObjectInfo) S3Path {
+	cl := OBJECT
+	if obj.Key[len(obj.Key)-1:] == "/" {
+		cl = COMMON_PREFIX
+	}
+
+	return S3Path{
+		path:   path.Join("/", bucket, obj.Key),
+		bucket: bucket,
+		key:    obj.Key,
+		class:  cl,
+	}
+}