From d95718ed6f71d7dcfdaaab39201129250fb8c222 Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Sun, 23 Oct 2022 19:11:14 +0000
Subject: [PATCH] ircd::fs: Additional convenience tools for path suite.

---
 include/ircd/fs/path.h |  4 ++++
 ircd/fs_path.cc        | 23 ++++++++++++++++++++++-
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/include/ircd/fs/path.h b/include/ircd/fs/path.h
index 9e3e7c149..c83cb0dd0 100644
--- a/include/ircd/fs/path.h
+++ b/include/ircd/fs/path.h
@@ -67,6 +67,10 @@ namespace ircd::fs
 	string_view canonical(const mutable_buffer &, const string_view &root, const string_view &path);
 	string_view relative(const mutable_buffer &, const string_view &root, const string_view &path);
 	string_view absolute(const mutable_buffer &, const string_view &root, const string_view &path);
+
+	bool is_extension(const string_view &path, const string_view &str);
+	bool is_filename(const string_view &path, const string_view &str);
+	bool is_parent(const string_view &path, const string_view &str);
 }
 
 /// Configuration items storing the base paths used at runtime for program
diff --git a/ircd/fs_path.cc b/ircd/fs_path.cc
index 1278218f1..aba43bb21 100644
--- a/ircd/fs_path.cc
+++ b/ircd/fs_path.cc
@@ -42,7 +42,7 @@ ircd::fs::PATH_MAX_LEN
 namespace ircd::fs
 {
 	static thread_local char _name_scratch[2][NAME_MAX_LEN];
-	static thread_local char _path_scratch[2][PATH_MAX_LEN];
+	static thread_local char _path_scratch[3][PATH_MAX_LEN];
 }
 
 // External mutable_buffer to the scratch
@@ -233,6 +233,27 @@ ircd::fs::base::db
 // tools
 //
 
+bool
+ircd::fs::is_parent(const string_view &path,
+                    const string_view &str)
+{
+	return parent(_path_scratch[2], path) == str;
+}
+
+bool
+ircd::fs::is_filename(const string_view &path,
+                      const string_view &str)
+{
+	return filename(_path_scratch[2], path) == str;
+}
+
+bool
+ircd::fs::is_extension(const string_view &path,
+                       const string_view &str)
+{
+	return extension(_path_scratch[2], path) == str;
+}
+
 ircd::string_view
 ircd::fs::canonical(const mutable_buffer &buf,
                     const string_view &p)