argparse: use replace raw char* strings with string views

.gitattributes

@@ -0,0 +1 @@
+*.c linguist-vendored

README.md

@@ -1,43 +1,39 @@
 # tmx2gba #
 tmx2gba is a simple command line utility that converts [Tiled](http://www.mapeditor.org/) .tmx maps to Game Boy Advance formatted charmaps.
-Originally developed for my own personal use, I've thrown it up in case this is of use to anyone else.
-
-If you find a bug, please open an issue.
-
-Enjoy!
 
 ### Features ###
-* Exports to raw binary that can be easily memcpy'd into VRAM.
+* Export raw charmaps that can be easily memcpy'd into VRAM.
 * Preserves tile flipping.
 * Supports per-tile palette specification.
 * Custom collision layer support.
+* Support for objects with id mapping.
 
-### How do I use it? ###
+## Usage ##
 ```
-tmx2gba [-h] [-r offset] [-lyc name] [-p 0-15] <-i inpath> <-o outpath>
+tmx2gba [-hv] [-r offset] [-lyc name] [-p 0-15] [-m name;id] <-i inpath> <-o outpath>
 ```
 
 | Command      | Required | Notes                                                                              |
-|--------------|----------|-----------------------------------------------------------------------|
+|--------------|----------|------------------------------------------------------------------------------------|
-| -h           | N/A      | Display help & command info.                                          |
+| -h           | N/A      | Display help & command info                                                        |
-| -v           | No       | Display version & quit.                                               |
+| -v           | No       | Display version & quit                                                             |
-| -l (name)    | No       | Name of layer to use (default first layer in TMX).                    |
+| -l (name)    | No       | Name of layer to use (default first layer in TMX)                                  |
-| -y (name)    | No       | Layer for palette mappings.                                           |
+| -y (name)    | No       | Layer for palette mappings                                                         |
-| -c (name)    | No       | Output a separate 8bit collision map of the specified layer.          |
+| -c (name)    | No       | Output a separate 8bit collision map of the specified layer                        |
-| -r (offset)  | No       | Offset tile indices (default 0).                                      |
+| -r (offset)  | No       | Offset tile indices (default 0)                                                    |
-| -p (0-15)    | No       | Select which palette to use for 4-bit tilesets.                       |
+| -p (0-15)    | No       | Select which palette to use for 4-bit tilesets                                     |
-| -m (name;id) | No       | Map an object name to an ID, will enable object exports.              |
+| -m (name;id) | No       | Map an object name to an ID, will enable object exports                            |
-| -i (path)    | *Yes*    | Path to input TMX file.                                               |
+| -i (path)    | *Yes*    | Path to input TMX file                                                             |
-| -o (path)    | *Yes*    | Path to output files.                                                 |
+| -o (path)    | *Yes*    | Path to output files                                                               |
-| -f <file>    | No       | Command line instructions list for easy integration with buildscripts |
+| -f <file>    | No       | Flag file containing command-line arguments for easy integration with buildscripts |
 
-### How do I build it? ###
+## Building ##
 
-Dependencies for building are CMake 3.x and a C++11 compliant compiler,
+Dependencies for building are CMake 3.15 and a C++20 compliant compiler,
 all other dependencies are in-tree so you should be able to build with:
 ```bash
 cmake -B build -DCMAKE_BUILD_TYPE=RelWithDebInfo
-make -C build -j$(nproc --all)
+cmake --build build
 ```
 
 Optionally, you may install it to use it system wide:
@@ -45,10 +41,8 @@ Optionally, you may install it to use it system wide:
 sudo cmake --install build
 ```
 Which will copy the tmx2gba executable to /usr/local/bin/tmx2gba by default,
-if you prefer to use /usr for some reason you may specify a prefix like so:
+`--prefix /usr` can be used to override install location.
-```bash
+
-sudo cmake --install build --prefix /usr
-```
 If you're a devkitPro user and would prefer to keep all your development tools compartmentalised
 you may optionally install to the tools directory with the `TMX2GBA_DKP_INSTALL` option (OFF by default).
 The build scripts will respect your `DEVKITPRO` environment variable but if not set will install to
@@ -63,32 +57,11 @@ sudo cmake --install build
 * Add support for multi-SBB prepared charmaps.
 * Check if this works for NDS as well.
 * Compression support.
-* Support for less common TMX formats.
 
-### License ###
+## License ##
-[tmx2gba](https://github.com/ScrelliCopter/tmx2gba) is licensed under the zlib license.
+[tmx2gba](https://github.com/ScrelliCopter/tmx2gba) is licensed under the [Zlib license](COPYING.txt).
-[RapidXML](http://rapidxml.sourceforge.net/) is licensed under the Boost & MIT licenses.
+- A modified [tmxlite](https://github.com/fallahn/tmxlite) is licensed under the [Zlib license](ext/tmxlite/LICENSE).
-[René Nyffenegger's base64.cpp](https://github.com/ReneNyffenegger/cpp-base64) is licensed under the zlib license.
+- [pugixml](https://pugixml.org/) is licensed under the [MIT license](ext/pugixml/LICENSE.md).
-[miniz](https://github.com/richgel999/miniz) is public domain software.
+- [René Nyffenegger's base64.cpp](https://github.com/ReneNyffenegger/cpp-base64) is licensed under the [Zlib license](ext/base64/LICENSE).
-[ultragetopt](https://github.com/kevinoid/ultragetopt) is licensed under the MIT license.
+- [miniz](https://github.com/richgel999/miniz) is licensed under the [MIT license](ext/miniz/LICENSE).
-
+- [ZStandard](https://facebook.github.io/zstd/) is licensed under the [BSD 3-clause license](ext/zstd/LICENSE).
-```
-  Copyright (C) 2015-2023 a dinosaur
-
-  This software is provided 'as-is', without any express or implied
-  warranty.  In no event will the authors be held liable for any damages
-  arising from the use of this software.
-
-  Permission is granted to anyone to use this software for any purpose,
-  including commercial applications, and to alter it and redistribute it
-  freely, subject to the following restrictions:
-
-  1. The origin of this software must not be misrepresented; you must not
-     claim that you wrote the original software. If you use this software
-     in a product, an acknowledgment in the product documentation would be
-     appreciated but is not required.
-  2. Altered source versions must be plainly marked as such, and must not be
-     misrepresented as being the original software.
-  3. This notice may not be removed or altered from any source distribution.
-  
-```

ext/base64/LICENSE

@@ -0,0 +1,19 @@
+Copyright © 2004-2017 by René Nyffenegger
+
+This source code is provided 'as-is', without any express or implied
+warranty. In no event will the author be held liable for any damages
+arising from the use of this software.
+                                                                              
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+                                                                              
+1. The origin of this source code must not be misrepresented; you must not
+   claim that you wrote the original source code. If you use this source code
+   in a product, an acknowledgment in the product documentation would be
+   appreciated but is not required.
+                                                                              
+2. Altered source versions must be plainly marked as such, and must not be
+   misrepresented as being the original source code.
+                                                                              
+3. This notice may not be removed or altered from any source distribution.

ext/tmxlite/CMakeLists.txt

@@ -1,17 +1,41 @@
 project(tmxlite VERSION 1.3.1)
 
-# includes the list of source files in the src directory
+add_library(${PROJECT_NAME} STATIC
-set(PROJECT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src)
+	include/tmxlite/Config.hpp
-file(GLOB PROJECT_SRC            ${PROJECT_DIR}/*.cpp)
+	include/tmxlite/FreeFuncs.hpp
-file(GLOB PROJECT_HEADERS        ${CMAKE_CURRENT_SOURCE_DIR}/include/tmxlite/*.hpp)
+	include/tmxlite/ImageLayer.hpp
-file(GLOB PROJECT_HEADERS_INL    ${CMAKE_CURRENT_SOURCE_DIR}/include/tmxlite/*.inl)
+	include/tmxlite/Layer.hpp
-file(GLOB PROJECT_HEADERS_DETAIL ${CMAKE_CURRENT_SOURCE_DIR}/include/tmxlite/detail/*.hpp)
+	include/tmxlite/LayerGroup.hpp
-list(APPEND PROJECT_SRC ${PROJECT_HEADERS} ${PROJECT_HEADERS_INL} ${PROJECT_HEADERS_DETAIL})
+	include/tmxlite/Map.hpp
+	include/tmxlite/Object.hpp
+	include/tmxlite/ObjectGroup.hpp
+	include/tmxlite/ObjectTypes.hpp
+	include/tmxlite/Property.hpp
+	include/tmxlite/TileLayer.hpp
+	include/tmxlite/Tileset.hpp
+	include/tmxlite/Types.hpp
+	include/tmxlite/Types.inl
+	include/tmxlite/detail/Log.hpp
 
-add_library(${PROJECT_NAME} STATIC ${PROJECT_SRC})
+	src/FreeFuncs.cpp
+	src/ImageLayer.cpp
+	src/Map.cpp
+	src/Object.cpp
+	src/ObjectGroup.cpp
+	src/Property.cpp
+	src/TileLayer.cpp
+	src/LayerGroup.cpp
+	src/Tileset.cpp
+	src/ObjectTypes.cpp)
+
+if (NOT USE_ZLIB)
+	target_sources(${PROJECT_NAME} PRIVATE
+		include/tmxlite/detail/gzip.hpp
+		src/detail/gzip.cpp)
+endif()
 
 set_target_properties(${PROJECT_NAME} PROPERTIES
-	CXX_STANDARD 14
+	CXX_STANDARD 20
 	CXX_STANDARD_REQUIRED ON)
 
 target_include_directories(${PROJECT_NAME} PUBLIC

ext/tmxlite/LICENSE

@@ -0,0 +1,13 @@
+(c)Matt Marchant & contributors 2016 - 2021 http://trederia.blogspot.com
+
+tmxlite - Zlib license.
+
+This software is provided 'as-is', without any express or implied warranty.  
+In no event will the authors be held liable for any damages arising from the use of this software. 
+Permission is granted to anyone to use this software for any purpose, including commercial applications,  
+and to alter it and redistribute it freely, subject to the following restrictions:  
+The origin of this software must not be misrepresented; you must not claim that you wrote the original software.  
+If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.  
+Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+
+This notice may not be removed or altered from any source distribution.

ext/tmxlite/include/tmxlite/FreeFuncs.hpp

@@ -27,9 +27,8 @@ source distribution.
 
 #pragma once
 
-#include <tmxlite/detail/Android.hpp>
+#include "tmxlite/detail/Log.hpp"
-#include <tmxlite/detail/Log.hpp>
+#include "tmxlite/Types.hpp"
-#include <tmxlite/Types.hpp>
 
 #include <string>
 #include <sstream>
@@ -96,17 +95,8 @@ namespace tmx
                 outPath = outPath.substr(0, result);
             }
         }
-// this does only work on windows
+
-#ifndef __ANDROID__
         return outPath + '/' + path;
-#endif
-
-// todo: make resolveFilePath work with subfolders on
-// android - currently only the root folder is working
-
-#ifdef __ANDROID__
-        return path;
-#endif
     }
 
     static inline std::string getFilePath(const std::string& path)

ext/tmxlite/include/tmxlite/ImageLayer.hpp

@@ -27,9 +27,9 @@ source distribution.
 
 #pragma once
 
-#include <tmxlite/Config.hpp>
+#include "tmxlite/Config.hpp"
-#include <tmxlite/Layer.hpp>
+#include "tmxlite/Layer.hpp"
-#include <tmxlite/Types.hpp>
+#include "tmxlite/Types.hpp"
 
 namespace tmx
 {

ext/tmxlite/include/tmxlite/Layer.hpp

@@ -27,9 +27,9 @@ source distribution.
 
 #pragma once
 
-#include <tmxlite/Config.hpp>
+#include "tmxlite/Config.hpp"
-#include <tmxlite/Property.hpp>
+#include "tmxlite/Property.hpp"
-#include <tmxlite/Types.hpp>
+#include "tmxlite/Types.hpp"
 
 #include <string>
 #include <memory>

ext/tmxlite/include/tmxlite/LayerGroup.hpp

@@ -26,9 +26,9 @@ source distribution.
 
 #pragma once
 
-#include <tmxlite/Config.hpp>
+#include "tmxlite/Config.hpp"
-#include <tmxlite/Layer.hpp>
+#include "tmxlite/Layer.hpp"
-#include <tmxlite/Types.hpp>
+#include "tmxlite/Types.hpp"
 
 #include <vector>
 

ext/tmxlite/include/tmxlite/Map.hpp

@@ -27,11 +27,11 @@ source distribution.
 
 #pragma once
 
-#include <tmxlite/Tileset.hpp>
+#include "tmxlite/Tileset.hpp"
-#include <tmxlite/Layer.hpp>
+#include "tmxlite/Layer.hpp"
-#include <tmxlite/Property.hpp>
+#include "tmxlite/Property.hpp"
-#include <tmxlite/Types.hpp>
+#include "tmxlite/Types.hpp"
-#include <tmxlite/Object.hpp>
+#include "tmxlite/Object.hpp"
 
 #include <string>
 #include <vector>

ext/tmxlite/include/tmxlite/Object.hpp

@@ -27,9 +27,9 @@ source distribution.
 
 #pragma once
 
-#include <tmxlite/Config.hpp>
+#include "tmxlite/Config.hpp"
-#include <tmxlite/Property.hpp>
+#include "tmxlite/Property.hpp"
-#include <tmxlite/Types.hpp>
+#include "tmxlite/Types.hpp"
 
 #include <string>
 #include <vector>

ext/tmxlite/include/tmxlite/ObjectGroup.hpp

@@ -27,9 +27,9 @@ source distribution.
 
 #pragma once
 
-#include <tmxlite/Config.hpp>
+#include "tmxlite/Config.hpp"
-#include <tmxlite/Layer.hpp>
+#include "tmxlite/Layer.hpp"
-#include <tmxlite/Object.hpp>
+#include "tmxlite/Object.hpp"
 
 #include <vector>
 

ext/tmxlite/include/tmxlite/ObjectTypes.hpp

@@ -26,7 +26,7 @@ source distribution.
 
 #pragma once
 
-#include <tmxlite/Property.hpp>
+#include "tmxlite/Property.hpp"
 
 #include <string>
 #include <vector>

ext/tmxlite/include/tmxlite/Property.hpp

@@ -27,8 +27,8 @@ source distribution.
 
 #pragma once
 
-#include <tmxlite/Config.hpp>
+#include "tmxlite/Config.hpp"
-#include <tmxlite/Types.hpp>
+#include "tmxlite/Types.hpp"
 
 #include <string>
 #include <cassert>

ext/tmxlite/include/tmxlite/TileLayer.hpp

@@ -27,8 +27,8 @@ source distribution.
 
 #pragma once
 
-#include <tmxlite/Layer.hpp>
+#include "tmxlite/Layer.hpp"
-#include <tmxlite/Types.hpp>
+#include "tmxlite/Types.hpp"
 
 namespace tmx
 {

ext/tmxlite/include/tmxlite/Tileset.hpp

@@ -27,9 +27,9 @@ source distribution.
 
 #pragma once
 
-#include <tmxlite/Config.hpp>
+#include "tmxlite/Config.hpp"
-#include <tmxlite/Property.hpp>
+#include "tmxlite/Property.hpp"
-#include <tmxlite/ObjectGroup.hpp>
+#include "tmxlite/ObjectGroup.hpp"
 
 #include <string>
 #include <vector>

ext/tmxlite/include/tmxlite/Types.hpp

@@ -27,7 +27,7 @@ source distribution.
 
 #pragma once
 
-#include <tmxlite/Config.hpp>
+#include "tmxlite/Config.hpp"
 
 #include <cstdint>
 #include <ostream>

ext/tmxlite/include/tmxlite/detail/Android.hpp

@@ -1,53 +0,0 @@
-/*********************************************************************
-Matt Marchant 2016
-http://trederia.blogspot.com
-
-tmxlite - Zlib license.
-
-This software is provided 'as-is', without any express or
-implied warranty. In no event will the authors be held
-liable for any damages arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute
-it freely, subject to the following restrictions:
-
-1. The origin of this software must not be misrepresented;
-you must not claim that you wrote the original software.
-If you use this software in a product, an acknowledgment
-in the product documentation would be appreciated but
-is not required.
-
-2. Altered source versions must be plainly marked as such,
-and must not be misrepresented as being the original software.
-
-3. This notice may not be removed or altered from any
-source distribution.
-*********************************************************************/
-
-#ifndef ANDROID_INC_HPP_
-#define ANDROID_INC_HPP_
-#ifdef __ANDROID__
-
-#include <string>
-#include <sstream>
-
-#include <cstdlib>
-
-namespace std
-{
-    template <typename T>
-    std::string to_string(T value)
-    {
-        std::ostringstream os;
-        os << value;
-        return os.str();
-    }
-}
-
-#define STOI(str) std::strtol(str.c_str(), 0, 10)
-#else
-#define STOI(str) std::stoi(str)
-
-#endif // __ANDROID__
-#endif // ANDROID_INC_HPP_

ext/tmxlite/include/tmxlite/detail/Log.hpp

@@ -43,18 +43,6 @@ source distribution.
 #include <windows.h>
 #endif //_MSC_VER
 
-
-#ifdef __ANDROID__
-    #include <android/log.h>
-    #include <cstring>
-
-    #define  LOG_TAG    "TMXlite-Debug" 
-    //#define  ALOG(...)  __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)
-
-    #define LOGI(...)  __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)
-    #define LOGE(...)  __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)
-#endif // __ANDROID__
-
 namespace tmx
 {
     /*!
@@ -105,23 +93,10 @@ namespace tmx
             {
                 if (type == Type::Error)
                 {
-#ifdef __ANDROID__  
-                    
-                    int outstringLength = outstring.length();
-                    char outstring_chararray[outstringLength+1];
-                    std::strcpy(outstring_chararray, outstring.c_str()); 
-                    LOGE("%s",outstring_chararray);
-#endif
                     std::cerr << outstring << std::endl;
                 }
                 else
                 {
-#ifdef __ANDROID__
-                    int outstringLength = outstring.length();
-                    char outstring_chararray[outstringLength+1];
-                    std::strcpy(outstring_chararray, outstring.c_str()); 
-                    LOGI("%s", outstring_chararray);
-#endif
                     std::cout << outstring << std::endl;
                 }
                 const std::size_t maxBuffer = 30;
@@ -140,13 +115,11 @@ namespace tmx
                 std::ofstream file("output.log", std::ios::app);
                 if (file.good())
                 {
-#ifndef __ANDROID__
                     std::time_t time = std::time(nullptr);
                     auto tm = *std::localtime(&time);
                     //put_time isn't implemented by the ndk versions of the stl
                     file.imbue(std::locale());
                     file << std::put_time(&tm, "%d/%m/%y-%H:%M:%S: ");
-#endif //__ANDROID__
                     file << outstring << std::endl;
                     file.close();
                 }

ext/tmxlite/include/tmxlite/detail/gzip.hpp

@@ -0,0 +1,39 @@
+// gzip.hpp - portable memory miniz based gzip reader
+// SPDX-License-Identifier: Zlib
+// SPDX-FileCopyrightText: (c) 2024 a dinosaur
+
+#ifndef GZIP_HPP
+#define GZIP_HPP
+
+#include "miniz.h"
+#include <cstdint>
+#include <span>
+
+
+class GZipReader
+{
+	static constexpr uint8_t
+		FTEXT = 1, FHCRC = 1<<1, FEXTRA = 1<<2, FNAME = 1<<3, FCOMMENT = 1<<4;
+
+	static constexpr uint8_t XFL_BEST = 2, XFL_FASTEST = 4;
+
+	tinfl_decompressor mState;
+	std::span<const uint8_t>::iterator mIt;
+
+	size_t mSourceLen, mBytesRead;
+	uint32_t mModificationTime, mCrc, mInputSize, mComputedCrc;
+	uint16_t crc16;
+	uint8_t mFlags, mXflags, mOsId;
+
+public:
+	GZipReader() noexcept;
+
+	constexpr size_t SourceLength() const noexcept { return mSourceLen; }
+	constexpr uint32_t OutputLength() const noexcept { return mInputSize; }
+
+	bool OpenMemory(const std::span<const uint8_t> source) noexcept;
+	bool Read(std::span<uint8_t> out) noexcept;
+	bool Check() const noexcept;
+};
+
+#endif//GZIP_HPP

ext/tmxlite/src/FreeFuncs.cpp

@@ -25,15 +25,14 @@ and must not be misrepresented as being the original software.
 source distribution.
 *********************************************************************/
 
+#include "tmxlite/FreeFuncs.hpp"
+#include "tmxlite/Types.hpp"
+#include "tmxlite/detail/Log.hpp"
 #ifndef USE_ZLIB
-#include "miniz.h"
+# include "miniz.h"
 #else
-#include <zlib.h>
+# include <zlib.h>
 #endif
-#include <tmxlite/FreeFuncs.hpp>
-#include <tmxlite/Types.hpp>
-#include <tmxlite/detail/Log.hpp>
-
 #include <cstring>
 
 bool tmx::decompress(const char* source, std::vector<unsigned char>& dest, std::size_t inSize, std::size_t expectedSize)

ext/tmxlite/src/ImageLayer.cpp

@@ -25,10 +25,11 @@ and must not be misrepresented as being the original software.
 source distribution.
 *********************************************************************/
 
+#include "tmxlite/ImageLayer.hpp"
+#include "tmxlite/FreeFuncs.hpp"
+#include "tmxlite/detail/Log.hpp"
+
 #include <pugixml.hpp>
-#include <tmxlite/ImageLayer.hpp>
-#include <tmxlite/FreeFuncs.hpp>
-#include <tmxlite/detail/Log.hpp>
 
 using namespace tmx;
 

ext/tmxlite/src/LayerGroup.cpp

@@ -25,13 +25,14 @@ and must not be misrepresented as being the original software.
 source distribution.
 *********************************************************************/
 
+#include "tmxlite/LayerGroup.hpp"
+#include "tmxlite/FreeFuncs.hpp"
+#include "tmxlite/ObjectGroup.hpp"
+#include "tmxlite/ImageLayer.hpp"
+#include "tmxlite/TileLayer.hpp"
+#include "tmxlite/detail/Log.hpp"
+
 #include <pugixml.hpp>
-#include <tmxlite/LayerGroup.hpp>
-#include <tmxlite/FreeFuncs.hpp>
-#include <tmxlite/ObjectGroup.hpp>
-#include <tmxlite/ImageLayer.hpp>
-#include <tmxlite/TileLayer.hpp>
-#include <tmxlite/detail/Log.hpp>
 
 using namespace tmx;
 

ext/tmxlite/src/Map.cpp

@@ -25,16 +25,15 @@ and must not be misrepresented as being the original software.
 source distribution.
 *********************************************************************/
 
-#include <pugixml.hpp>
+#include "tmxlite/Map.hpp"
-#include <tmxlite/Map.hpp>
+#include "tmxlite/FreeFuncs.hpp"
-#include <tmxlite/FreeFuncs.hpp>
+#include "tmxlite/ObjectGroup.hpp"
-#include <tmxlite/ObjectGroup.hpp>
+#include "tmxlite/ImageLayer.hpp"
-#include <tmxlite/ImageLayer.hpp>
+#include "tmxlite/TileLayer.hpp"
-#include <tmxlite/TileLayer.hpp>
+#include "tmxlite/LayerGroup.hpp"
-#include <tmxlite/LayerGroup.hpp>
+#include "tmxlite/detail/Log.hpp"
-#include <tmxlite/detail/Log.hpp>
-#include <tmxlite/detail/Android.hpp>
 
+#include <pugixml.hpp>
 #include <queue>
 
 using namespace tmx;
@@ -136,8 +135,8 @@ bool Map::parseMapNode(const pugi::xml_node& mapNode)
         return reset();
     }
 
-    m_version.upper = STOI(attribString.substr(0, pointPos));
+    m_version.upper = std::stoi(attribString.substr(0, pointPos));
-    m_version.lower = STOI(attribString.substr(pointPos + 1));
+    m_version.lower = std::stoi(attribString.substr(pointPos + 1));
 
     m_class = mapNode.attribute("class").as_string();
 

ext/tmxlite/src/Object.cpp

@@ -25,13 +25,13 @@ and must not be misrepresented as being the original software.
 source distribution.
 *********************************************************************/
 
-#include <pugixml.hpp>
+#include "tmxlite/Object.hpp"
-#include <tmxlite/Object.hpp>
+#include "tmxlite/FreeFuncs.hpp"
-#include <tmxlite/FreeFuncs.hpp>
+#include "tmxlite/Map.hpp"
-#include <tmxlite/Map.hpp>
+#include "tmxlite/Tileset.hpp"
-#include <tmxlite/Tileset.hpp>
+#include "tmxlite/detail/Log.hpp"
-#include <tmxlite/detail/Log.hpp>
 
+#include <pugixml.hpp>
 #include <sstream>
 
 using namespace tmx;

ext/tmxlite/src/ObjectGroup.cpp

@@ -25,10 +25,11 @@ and must not be misrepresented as being the original software.
 source distribution.
 *********************************************************************/
 
+#include "tmxlite/FreeFuncs.hpp"
+#include "tmxlite/ObjectGroup.hpp"
+#include "tmxlite/detail/Log.hpp"
+
 #include <pugixml.hpp>
-#include <tmxlite/FreeFuncs.hpp>
-#include <tmxlite/ObjectGroup.hpp>
-#include <tmxlite/detail/Log.hpp>
 
 using namespace tmx;
 

ext/tmxlite/src/ObjectTypes.cpp

@@ -24,10 +24,11 @@ and must not be misrepresented as being the original software.
 source distribution.
 *********************************************************************/
 
+#include "tmxlite/FreeFuncs.hpp"
+#include "tmxlite/ObjectTypes.hpp"
+#include "tmxlite/detail/Log.hpp"
+
 #include <pugixml.hpp>
-#include <tmxlite/FreeFuncs.hpp>
-#include <tmxlite/ObjectTypes.hpp>
-#include <tmxlite/detail/Log.hpp>
 
 using namespace tmx;
 

ext/tmxlite/src/Property.cpp

@@ -25,10 +25,11 @@ and must not be misrepresented as being the original software.
 source distribution.
 *********************************************************************/
 
+#include "tmxlite/Property.hpp"
+#include "tmxlite/detail/Log.hpp"
+#include "tmxlite/FreeFuncs.hpp"
+
 #include <pugixml.hpp>
-#include <tmxlite/Property.hpp>
-#include <tmxlite/detail/Log.hpp>
-#include <tmxlite/FreeFuncs.hpp>
 
 using namespace tmx;
 

ext/tmxlite/src/TileLayer.cpp

@@ -25,13 +25,18 @@ and must not be misrepresented as being the original software.
 source distribution.
 *********************************************************************/
 
-#include <pugixml.hpp>
-#include <zstd.h>
 #include "base64.h"
 #include "tmxlite/FreeFuncs.hpp"
 #include "tmxlite/TileLayer.hpp"
 #include "tmxlite/detail/Log.hpp"
+#ifndef USE_ZLIB
+# include "tmxlite/detail/gzip.hpp"
+#endif
+
+#include <pugixml.hpp>
+#include <zstd.h>
 #include <sstream>
+#include <span>
 
 using namespace tmx;
 
@@ -139,8 +144,18 @@ void TileLayer::parseBase64(const pugi::xml_node& node)
             break;
         case CompressionType::GZip:
 #ifndef USE_ZLIB
-            Logger::log("Library must be built with USE_ZLIB for GZip compression", Logger::Type::Error);
+            {
+                byteData.resize(expectedSize);
+                const auto source = std::span(reinterpret_cast<const uint8_t*>(dataString.data()), dataString.size());
+
+                GZipReader reader;
+                if (!reader.OpenMemory(source) || !reader.Read(byteData) || !reader.Check())
+                {
+                    LOG("Failed to decompress layer data, node skipped.", Logger::Type::Error);
                     return {};
+                }
+            }
+            break;
 #endif
             //[[fallthrough]];
         case CompressionType::Zlib:

ext/tmxlite/src/Tileset.cpp

@@ -25,11 +25,11 @@ and must not be misrepresented as being the original software.
 source distribution.
 *********************************************************************/
 
-#include <pugixml.hpp>
+#include "tmxlite/Tileset.hpp"
-#include <tmxlite/Tileset.hpp>
+#include "tmxlite/FreeFuncs.hpp"
-#include <tmxlite/FreeFuncs.hpp>
+#include "tmxlite/detail/Log.hpp"
-#include <tmxlite/detail/Log.hpp>
 
+#include <pugixml.hpp>
 #include <ctype.h>
 
 using namespace tmx;

ext/tmxlite/src/detail/gzip.cpp

@@ -0,0 +1,125 @@
+// gzip.cpp - portable memory miniz based gzip reader
+// SPDX-License-Identifier: Zlib
+// SPDX-FileCopyrightText: (c) 2024 a dinosaur
+
+#include "tmxlite/detail/gzip.hpp"
+#include <string_view>
+
+
+GZipReader::GZipReader() noexcept :
+	mSourceLen(0), mBytesRead(0),
+	mModificationTime(0), mCrc(0), mInputSize(0), mComputedCrc(0),
+	crc16(0), mFlags(0), mXflags(0), mOsId(0)
+{
+	tinfl_init(&mState);
+	mComputedCrc = static_cast<uint32_t>(mz_crc32(0, nullptr, 0));
+}
+
+bool GZipReader::OpenMemory(const std::span<const uint8_t> source) noexcept
+{
+	if (source.size() < 20)
+		return false;
+
+	auto it = std::cbegin(source), end = std::cend(source);
+
+	constexpr uint8_t magic[2] = { 0x1F, 0x8B };
+	if (*it++ != magic[0] || *it++ != magic[1])
+		return false;
+
+	constexpr uint8_t CM_DEFLATE = 8;
+	uint8_t compression = *it++;
+	if (compression != CM_DEFLATE)
+		return false;
+
+	mFlags = *it++;
+	mModificationTime = *it++;
+	mModificationTime |= *it++ << 8;
+	mModificationTime |= *it++ << 16;
+	mModificationTime |= *it++ << 24;
+	mXflags = *it++;
+	mOsId = *it++;
+
+	if (mFlags & FEXTRA)
+	{
+		// Skip "extra" field
+		if (it + 2 >= end)
+			return false;
+		uint16_t extraLen = *it++;
+		extraLen = *it++ << 8;
+		if (it + extraLen >= end)
+			return false;
+		it += extraLen;
+	}
+	if (mFlags & FNAME)
+	{
+		// Skip null-terminated name string
+		do
+		{
+			if (++it == end)
+				return false;
+		} while (*it != '\0');
+		if (++it == end)
+			return false;
+	}
+	if (mFlags & FCOMMENT)
+	{
+		// Skip null-terminated comment string
+		do
+		{
+			if (++it == end)
+				return false;
+		} while (*it != '\0');
+		if (++it == end)
+			return false;
+	}
+	if (mFlags & FHCRC)
+	{
+		if (it + 2 >= end)
+			return false;
+		crc16 = *it++;
+		crc16 |= *it++;
+	}
+
+	mIt = it;
+	mSourceLen = end - it - 8;
+
+	it += mSourceLen;
+	mCrc = *it++;
+	mCrc |= *it++ << 8;
+	mCrc |= *it++ << 16;
+	mCrc |= *it++ << 24;
+	mInputSize = *it++;
+	mInputSize |= *it++ << 8;
+	mInputSize |= *it++ << 16;
+	mInputSize |= *it++ << 24;
+
+	return true;
+}
+
+bool GZipReader::Read(std::span<uint8_t> out) noexcept
+{
+	size_t outLen = out.size();
+	auto res = tinfl_decompress(&mState,
+		static_cast<const mz_uint8*>(&*mIt), &mSourceLen,
+		static_cast<mz_uint8*>(out.data()), static_cast<mz_uint8*>(out.data()), &outLen,
+		TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF);
+	if (res != TINFL_STATUS_DONE)
+		return false;
+
+	mIt += outLen;
+	mBytesRead += outLen;
+	mComputedCrc = static_cast<uint32_t>(mz_crc32(static_cast<mz_ulong>(mComputedCrc), out.data(), outLen));
+
+	return true;
+}
+
+bool GZipReader::Check() const noexcept
+{
+	if (mComputedCrc != mCrc)
+		return false;
+
+	if (static_cast<uint32_t>(mBytesRead & UINT32_MAX) != mInputSize)
+		return false;
+
+	return true;
+}

src/argparse.cpp

@@ -23,7 +23,7 @@ void ArgParse::Options::ShowShortUsage(const std::string_view name, std::ostream
 	out << "Usage: " << name;
 	for (const auto& it : options)
 	{
-		if (it.argumentName)
+		if (!it.argumentName.empty())
 		{
 			// Option with argument
 			it.required
@@ -55,8 +55,8 @@ void ArgParse::Options::ShowHelpUsage(const std::string_view name, std::ostream&
 	out << ">" << std::endl;
 
 	// Determine the alignment width from the longest argument
-	auto paramLength = [](const Option& p) -> int { return p.argumentName
+	auto paramLength = [](const Option& p) -> int { return !p.argumentName.empty()
-		? static_cast<int>(std::strlen(p.argumentName) + 3)
+		? static_cast<int>(p.argumentName.length() + 3)
 		: 1; };
 	auto longestParam = std::max_element(options.begin(), options.end(),
 		[=](auto a, auto b) -> bool { return paramLength(a) < paramLength(b); });
@@ -67,7 +67,8 @@ void ArgParse::Options::ShowHelpUsage(const std::string_view name, std::ostream&
 	{
 		auto decorateArgument = [=] { return " <" + std::string(it.argumentName) + "> "; };
 		out << "  -" << it.flag
-			<< std::left << std::setw(alignWidth) << std::setfill('-') << (it.argumentName ? decorateArgument() : " ")
+			<< std::left << std::setw(alignWidth) << std::setfill('-')
+			<< (!it.argumentName.empty() ? decorateArgument() : " ")
 			<< " " << it.helpString << std::endl;
 	}
 	out << std::flush;
@@ -99,7 +100,7 @@ ArgParse::ParseCtrl ArgParse::ParserState::Next(const std::string_view token)
 			const auto opt = getOption(flagChar);
 			if (opt.has_value())
 			{
-				bool expect = opt.value().get().argumentName != nullptr;
+				bool expect = !opt.value().get().argumentName.empty();
 				if (token.length() <= 2)
 				{
 					expectArg = expect;

src/argparse.hpp

@@ -16,18 +16,18 @@ namespace ArgParse
 {
 	struct Option
 	{
-		const char* argumentName;
+		std::string_view argumentName;
-		const char* helpString;
+		std::string_view helpString;
 		char flag;
 		bool required;
 
-		static constexpr Option Optional(char flag, const char* name, const char* help)
+		static constexpr Option Optional(char flag, const std::string_view name, const std::string_view help)
 		{
 			return { name, help, flag, false };
 		}
-		static constexpr Option Required(char flag, const char* name, const char* help)
+		static constexpr Option Required(char flag, const std::string_view name, const std::string_view help)
 		{
-			return { name, help, flag, false };
+			return { name, help, flag, true };
 		}
 	};
 

src/tmx2gba.cpp

@@ -26,8 +26,8 @@ using ArgParse::Option;
 
 static const ArgParse::Options options =
 {
-	Option::Optional('h', nullptr,   "Display this help & command info"),
+	Option::Optional('h', {},        "Display this help & command info"),
-	Option::Optional('v', nullptr,   "Display version & quit"),
+	Option::Optional('v', {},        "Display version & quit"),
 	Option::Optional('l', "name",    "Name of layer to use (default first layer in TMX)"),
 	Option::Optional('y', "name",    "Layer for palette mappings"),
 	Option::Optional('c', "name",    "Output a separate 8bit collision map of the specified layer"),