From dd84b9d64fb98746a230cd24233ff50a562c39c9 Mon Sep 17 00:00:00 2001
From: 简律纯 <hsiangnianian@outlook.com>
Date: Fri, 28 Apr 2023 01:36:44 +0800
Subject:

---
 cli/internal/turbopath/find_up.go | 50 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 cli/internal/turbopath/find_up.go

(limited to 'cli/internal/turbopath/find_up.go')

diff --git a/cli/internal/turbopath/find_up.go b/cli/internal/turbopath/find_up.go
new file mode 100644
index 0000000..bf7c39c
--- /dev/null
+++ b/cli/internal/turbopath/find_up.go
@@ -0,0 +1,50 @@
+package turbopath
+
+import (
+	"os"
+	"path/filepath"
+)
+
+func hasFile(name, dir string) (bool, error) {
+	files, err := os.ReadDir(dir)
+
+	if err != nil {
+		return false, err
+	}
+
+	for _, f := range files {
+		if name == f.Name() {
+			return true, nil
+		}
+	}
+
+	return false, nil
+}
+
+func findupFrom(name, dir string) (string, error) {
+	for {
+		found, err := hasFile(name, dir)
+
+		if err != nil {
+			return "", err
+		}
+
+		if found {
+			return filepath.Join(dir, name), nil
+		}
+
+		parent := filepath.Dir(dir)
+
+		if parent == dir {
+			return "", nil
+		}
+
+		dir = parent
+	}
+}
+
+// FindupFrom Recursively finds a file by walking up parents in the file tree
+// starting from a specific directory.
+func FindupFrom(name, dir string) (string, error) {
+	return findupFrom(name, dir)
+}
-- 
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