First commit

.gitignore

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+*.tar.gz
+lua
+luac
+lua-*

LICENSE.txt

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+MIT License
+
+Copyright (c) 1994–2019 Lua.org, PUC-Rio.
+Copyright (c) 2020 Eduardo Bart (https://github.com/edubart).
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# MiniLua
+
+This is Lua contained in a single header to be bundled in C/C++ applications with ease.
+[Lua](https://www.lua.org/) is a powerful, efficient, lightweight, embeddable scripting language.
+
+## Example Usage
+
+```c
+#define LUA_IMPL
+#include "minilua.h"
+
+int main() {
+  lua_State *L = luaL_newstate();
+  if(L == NULL)
+    return -1;
+  luaL_openlibs(L);
+  luaL_loadstring(L, "print 'hello world'");
+  lua_call(L, 0, 0);
+  lua_close(L);
+  return 0;
+}
+
+```
+
+## Usage
+
+Copy `minilua.h` into your C or C++ project, include it anywhere you want to use Lua API.
+Then do the following in *one* C file to implement Lua:
+```c
+#define LUA_IMPL
+#include "minilua.h"
+```
+
+By default it detects the system platform to use, however you can explicitly define one.
+
+Note that almost no modification was made in the Lua implementation code,
+thus there are some C variable names that may collide with your code,
+therefore it is best to declare the Lua implementation in dedicated C file.
+
+Optionally provide the following defines:
+  - `LUA_MAKE_LUA`     - implement the Lua command line REPL
+
+## Documentation
+
+For documentation on how to use Lua read its [official manual](https://www.lua.org/manual/).
+
+## Updates
+
+- **27-Nov-2020**: Library created, using Lua 5.4.2-rc1.
+
+## Notes
+
+This library tries to keep up with latest official Lua release, however at the moment Lua 5.4.2-rc1
+is used due to some unfortunate bugs in 5.4.1.
+The header is generated using the bash script `gen.sh` all modifications done is there.
+
+## License
+
+Same license as Lua, the MIT license, see LICENSE.txt for information.

gen.sh

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+LUAVER=5.4.2-rc1
+LUADIR=lua-5.4.2
+LUAPKG=lua-$LUAVER.tar.gz
+LUAURL=https://www.lua.org/work/$LUAPKG
+
+# LUAVER=5.4.1
+# LUADIR=lua-$LUAVER
+# LUAPKG=lua-$LUAVER.tar.gz
+# LUAURL=https://www.lua.org/ftp/$LUAPKG
+
+OUTFILE=minilua.h
+
+if [ ! -d "$LUADIR" ]; then
+    rm -rf $LUAPKG
+    wget $LUAURL
+    tar xzf $LUAPKG
+fi
+
+rm -f $OUTFILE
+
+cat <<EOF >> $OUTFILE
+/*
+  minilua.h -- Lua in a single header
+  Project URL: https://github.com/edubart/minilua
+
+  This is Lua $LUAVER contained in a single header to be bundled in C/C++ applications with ease.
+  Lua is a powerful, efficient, lightweight, embeddable scripting language.
+
+  Do the following in *one* C file to create the implementation:
+    #define LUA_IMPL
+
+  By default it detects the system platform to use, however you could explicitly define one.
+
+  Note that almost no modification was made in the Lua implementation code,
+  thus there are some C variable names that may collide with your code,
+  therefore it is best to declare the Lua implementation in dedicated C file.
+
+  Optionally provide the following defines:
+    LUA_MAKE_LUA     - implement the Lua command line REPL
+
+  LICENSE
+    MIT License, same as Lua, see end of file.
+*/
+
+/* detect system platform */
+#if !defined(LUA_USE_WINDOWS) && !defined(LUA_USE_LINUX) && !defined(LUA_USE_MACOSX) && !defined(LUA_USE_POSIX) && !defined(LUA_USE_C89)
+#if defined(_WIN32)
+#define LUA_USE_WINDOWS
+#elif defined(__linux__)
+#define LUA_USE_LINUX
+#elif defined(__APPLE__)
+#define LUA_USE_MACOSX
+#else /* probably a POSIX system */
+#define LUA_USE_POSIX
+#define LUA_USE_DLOPEN
+#endif
+#endif
+
+EOF
+
+echo "#ifdef LUA_IMPL" >> $OUTFILE
+    cat $LUADIR/src/lprefix.h >> $OUTFILE
+echo "#endif /* LUA_IMPL */" >> $OUTFILE
+
+cat <<EOF >> $OUTFILE
+#ifdef __cplusplus
+extern "C" {
+#endif
+EOF
+
+cat $LUADIR/src/luaconf.h >> $OUTFILE
+cat $LUADIR/src/lua.h >> $OUTFILE
+cat $LUADIR/src/lauxlib.h >> $OUTFILE
+cat $LUADIR/src/lualib.h >> $OUTFILE
+
+echo "#ifdef LUA_IMPL" >> $OUTFILE
+  # C headers
+  cat $LUADIR/src/llimits.h >> $OUTFILE
+  cat $LUADIR/src/lobject.h >> $OUTFILE
+  cat $LUADIR/src/lmem.h >> $OUTFILE
+  cat $LUADIR/src/ltm.h >> $OUTFILE
+  cat $LUADIR/src/lstate.h >> $OUTFILE
+  cat $LUADIR/src/lzio.h >> $OUTFILE
+  cat $LUADIR/src/lopcodes.h >> $OUTFILE
+  cat $LUADIR/src/ldebug.h >> $OUTFILE
+  cat $LUADIR/src/ldo.h >> $OUTFILE
+  cat $LUADIR/src/lgc.h >> $OUTFILE
+  cat $LUADIR/src/lfunc.h >> $OUTFILE
+  cat $LUADIR/src/lstring.h >> $OUTFILE
+  cat $LUADIR/src/lundump.h >> $OUTFILE
+  cat $LUADIR/src/lapi.h >> $OUTFILE
+  cat $LUADIR/src/llex.h >> $OUTFILE
+  cat $LUADIR/src/ltable.h >> $OUTFILE
+  cat $LUADIR/src/lparser.h >> $OUTFILE
+  cat $LUADIR/src/lcode.h >> $OUTFILE
+  cat $LUADIR/src/lvm.h >> $OUTFILE
+  sed -i '/#include "ljumptab.h"/r $LUADIR/src/ljumptab.h' $OUTFILE
+  cat $LUADIR/src/lctype.h >> $OUTFILE
+
+  # C sources
+  cat $LUADIR/src/lzio.c >> $OUTFILE
+  cat $LUADIR/src/lctype.c >> $OUTFILE
+  cat $LUADIR/src/lopcodes.c >> $OUTFILE
+  cat $LUADIR/src/lmem.c >> $OUTFILE
+  cat $LUADIR/src/lundump.c >> $OUTFILE
+  cat $LUADIR/src/ldump.c >> $OUTFILE
+  cat $LUADIR/src/lstate.c >> $OUTFILE
+  cat $LUADIR/src/lgc.c >> $OUTFILE
+  cat $LUADIR/src/llex.c >> $OUTFILE
+  cat $LUADIR/src/lcode.c >> $OUTFILE
+  cat $LUADIR/src/lparser.c >> $OUTFILE
+  cat $LUADIR/src/ldebug.c >> $OUTFILE
+  cat $LUADIR/src/lfunc.c >> $OUTFILE
+  cat $LUADIR/src/lobject.c >> $OUTFILE
+  cat $LUADIR/src/ltm.c >> $OUTFILE
+  cat $LUADIR/src/lstring.c >> $OUTFILE
+  cat $LUADIR/src/ltable.c >> $OUTFILE
+  cat $LUADIR/src/ldo.c >> $OUTFILE
+  cat $LUADIR/src/lvm.c >> $OUTFILE
+  cat $LUADIR/src/lapi.c >> $OUTFILE
+  cat $LUADIR/src/lauxlib.c >> $OUTFILE
+  cat $LUADIR/src/lbaselib.c >> $OUTFILE
+  cat $LUADIR/src/lcorolib.c >> $OUTFILE
+  cat $LUADIR/src/ldblib.c >> $OUTFILE
+  cat $LUADIR/src/liolib.c >> $OUTFILE
+  cat $LUADIR/src/lmathlib.c >> $OUTFILE
+  cat $LUADIR/src/loadlib.c >> $OUTFILE
+  cat $LUADIR/src/loslib.c >> $OUTFILE
+  cat $LUADIR/src/lstrlib.c >> $OUTFILE
+  cat $LUADIR/src/ltablib.c >> $OUTFILE
+  cat $LUADIR/src/lutf8lib.c >> $OUTFILE
+  cat $LUADIR/src/linit.c >> $OUTFILE
+echo "#endif /* LUA_IMPL */" >> $OUTFILE
+
+cat <<EOF >> $OUTFILE
+#ifdef __cplusplus
+}
+#endif
+EOF
+
+# Implement Lua command line utility when LUA_MAKE_LUA is defined
+echo "#ifdef LUA_MAKE_LUA" >> $OUTFILE
+cat $LUADIR/src/lua.c >> $OUTFILE
+echo "#endif /* LUA_MAKE_LUA */" >> $OUTFILE
+
+# Comment all include headers
+sed -i 's/#include "\([^"]*\)"/\/\*#include "\1"\*\//' $OUTFILE
+
+cat <<EOF >> $OUTFILE
+
+/*
+  MIT License
+
+  Copyright (c) 1994–2019 Lua.org, PUC-Rio.
+  Copyright (c) 2020 Eduardo Bart (https://github.com/edubart).
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in all
+  copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+  SOFTWARE.
+*/
+EOF