From 847962910f0bff071f3bf07c9abb87764fb6cac3 Mon Sep 17 00:00:00 2001
From: claude-bot <claude@ancap.in.ua>
Date: Mon, 13 Jul 2026 12:40:03 +0000
Subject: Import aap/librw @ master

Snapshot for re3/reVC vendoring, per @lzcnt.
Source: https://github.com/aap/librw (master).
---
 tools/ska2anm/CMakeLists.txt | 20 +++++++++++
 tools/ska2anm/ska2anm.cpp    | 83 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 103 insertions(+)
 create mode 100644 tools/ska2anm/CMakeLists.txt
 create mode 100644 tools/ska2anm/ska2anm.cpp

(limited to 'tools/ska2anm')

diff --git a/tools/ska2anm/CMakeLists.txt b/tools/ska2anm/CMakeLists.txt
new file mode 100644
index 0000000..9a315c2
--- /dev/null
+++ b/tools/ska2anm/CMakeLists.txt
@@ -0,0 +1,20 @@
+add_executable(ska2anm
+    ska2anm.cpp
+)
+
+target_link_libraries(ska2anm
+    PUBLIC
+        librw::librw
+)
+
+if(LIBRW_GL3_GFXLIB MATCHES "SDL[23]")
+    target_compile_definitions(ska2anm PRIVATE SDL_MAIN_HANDLED)
+endif()
+
+if(LIBRW_INSTALL)
+    install(TARGETS ska2anm
+        RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
+    )
+endif()
+
+librw_platform_target(ska2anm INSTALL)
diff --git a/tools/ska2anm/ska2anm.cpp b/tools/ska2anm/ska2anm.cpp
new file mode 100644
index 0000000..900ba82
--- /dev/null
+++ b/tools/ska2anm/ska2anm.cpp
@@ -0,0 +1,83 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include <rw.h>
+#include <args.h>
+
+using namespace rw;
+
+char *argv0;
+
+void
+usage(void)
+{
+	fprintf(stderr, "usage: %s in.ska [out.anm]\n", argv0);
+	fprintf(stderr, "   or: %s in.anm [out.ska]\n", argv0);
+	exit(1);
+}
+
+int
+main(int argc, char *argv[])
+{
+	rw::Engine::init();
+	rw::registerHAnimPlugin();
+	rw::Engine::open(nil);
+	rw::Engine::start();
+
+	ARGBEGIN{
+	case 'v':
+		sscanf(EARGF(usage()), "%x", &rw::version);
+		break;
+	default:
+		usage();
+	}ARGEND;
+
+	if(argc < 1)
+		usage();
+
+	StreamFile stream;
+	if(!stream.open(argv[0], "rb")){
+		fprintf(stderr, "Error: couldn't open %s\n", argv[0]);
+		return 1;
+	}
+
+	int32 firstword = stream.readU32();
+	stream.seek(0, 0);
+	Animation *anim = nil;
+	if(firstword == ID_ANIMANIMATION){
+		// it's an anm file
+		if(findChunk(&stream, ID_ANIMANIMATION, nil, nil))
+			anim = Animation::streamRead(&stream);
+	}else{
+		// it's a ska file
+		anim = Animation::streamReadLegacy(&stream);
+	}
+	stream.close();
+
+	if(anim == nil){
+		fprintf(stderr, "Error: couldn't read anim file\n");
+		return 1;
+	}
+
+	const char *file;
+	if(argc > 1)
+		file = argv[1];
+	else if(firstword == ID_ANIMANIMATION)
+		file = "out.ska";
+	else
+		file = "out.anm";
+	if(!stream.open(file, "wb")){
+		fprintf(stderr, "Error: couldn't open %s\n", file);
+		return 1;
+	}
+	if(firstword == ID_ANIMANIMATION)
+		anim->streamWriteLegacy(&stream);
+	else
+		anim->streamWrite(&stream);
+
+	anim->destroy();
+
+	return 0;
+}
-- 
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