add file

1 files changed, 26 insertions, 0 deletions

diff --git a/internal/file.go b/internal/file.go
new file mode 100644
index 0000000..069e68f
--- /dev/null
+++ b/internal/file.go
@@ -0,0 +1,26 @@
+package internal
+
+import (
+	"strconv"
+	"strings"
+)
+
+type file struct {
+	fd   int32
+	name string
+}
+
+func (f file) String() string {
+	var sb strings.Builder
+
+	if len(f.name) == 0 {
+		sb.WriteString("file:?")
+	} else {
+		sb.WriteString("file:(")
+		sb.WriteString(strconv.FormatInt(int64(f.fd), 10))
+		sb.WriteString(")")
+		sb.WriteString(f.name)
+	}
+
+	return sb.String()
+}