From b00704ef37155c17daff1986cda3274d95560bad Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Sun, 11 Sep 2022 00:45:57 +0200
Subject: Extended dat update action with recursive behaviour

---
 ArchiveEx/dat.cpp | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/ArchiveEx/dat.cpp b/ArchiveEx/dat.cpp
index 06beba1..a8f112d 100644
--- a/ArchiveEx/dat.cpp
+++ b/ArchiveEx/dat.cpp
@@ -1,6 +1,7 @@
 #include <unistd.h>
 
 #include <exception>
+#include <filesystem>
 #include <iostream>
 #include <ostream>
 #include <string>
@@ -9,6 +10,9 @@
 #include <Archive.h>
 
 
+namespace fs = std::filesystem;
+
+
 enum class Action
 {
 	NOTHING,
@@ -41,6 +45,7 @@ public:
 static Options ParseArgs(int argc, char* argv[]);
 static void PrintUsage(std::ostream& out=std::cerr);
 static void PrintHelp(std::ostream& out=std::cout);
+static void UpdateFile(ArchiveEx::Archive& archive, const std::string& path, bool warn=true);
 
 
 static const char* program {"dat"};
@@ -69,7 +74,7 @@ try {
 		break;
 	case Action::UPDATE:
 		for (const auto& file : opts.files)
-			archive.Insert(file.c_str());  // Support recursive directories tar-like
+			UpdateFile(archive, file);
 		break;
 	case Action::EXTRACT:
 		break;  // Not implemented
@@ -147,3 +152,23 @@ PrintHelp(std::ostream& out)
 	out << "  -x\tExtracts files from the archive." << std::endl;
 	out << "  -c\tCreate the archive if it does not exist." << std::endl;
 }
+
+
+void
+UpdateFile(ArchiveEx::Archive& archive, const std::string& path, bool warn)
+{
+	const auto status = fs::status(path);
+	switch (status.type()) {
+	case fs::file_type::regular:
+		archive.Insert(path.c_str());
+		break;
+	case fs::file_type::directory:
+		for (const auto& entry : fs::directory_iterator{path})
+			UpdateFile(archive, entry.path(), false);
+		break;
+	default:
+		if (warn)
+			std::cerr << "unsupported file type: " << path << std::endl;
+		break;
+	}
+}
-- 
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