Add lua-deflate, a minimal deflate compression library for Lua
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include $(TOPDIR)/rules.mk
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PKG_NAME:=lua-deflate
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PKG_VERSION:=1
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PKG_LICENSE:=BSD-2-Clause
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PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
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include $(INCLUDE_DIR)/package.mk
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include $(INCLUDE_DIR)/cmake.mk
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define Package/lua-deflate
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SECTION:=libs
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CATEGORY:=Libraries
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TITLE:=A minimal deflate compression library for Lua
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DEPENDS:=+lua
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endef
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CMAKE_OPTIONS += -DCMAKE_BUILD_TYPE:STRING=MINSIZEREL
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define Build/Prepare
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mkdir -p $(PKG_BUILD_DIR)
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$(CP) ./src/* $(PKG_BUILD_DIR)/
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endef
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define Package/lua-deflate/install
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$(INSTALL_DIR) $(1)/usr/lib/lua
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$(CP) $(PKG_INSTALL_DIR)/usr/lib/lua/deflate.so $(1)/usr/lib/lua/
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endef
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$(eval $(call BuildPackage,lua-deflate))
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cmake_minimum_required(VERSION 2.6)
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project(lua-deflate C)
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set(LUA_MODULE_PATH "${CMAKE_INSTALL_PREFIX}/lib/lua" CACHE PATH "Lua module target path")
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find_package(Lua51 REQUIRED)
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set_property(DIRECTORY PROPERTY COMPILE_DEFINITIONS _GNU_SOURCE)
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include_directories(${LUA_INCLUDE_DIR})
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add_library(deflate MODULE deflate.c)
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set_property(TARGET deflate PROPERTY COMPILE_FLAGS "-Wall -std=c99 -fno-strict-aliasing")
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set_property(TARGET deflate PROPERTY PREFIX "")
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target_link_libraries(deflate ${LUA_LIBRARIES})
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install(TARGETS deflate DESTINATION ${LUA_MODULE_PATH})
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@ -0,0 +1,65 @@
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/*
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Copyright (c) 2015, Matthias Schiffer <mschiffer@universe-factory.net>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "miniz.c"
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#include <lua.h>
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#include <lauxlib.h>
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#include <lualib.h>
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#include <stdlib.h>
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static int l_compress(lua_State *L) {
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size_t in_length;
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const unsigned char *in = (unsigned char *)luaL_checklstring(L, 1, &in_length);
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mz_ulong out_length = mz_compressBound(in_length);
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unsigned char *out = malloc(out_length);
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int status = mz_compress(out, &out_length, in, in_length);
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if (status) {
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free(out);
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lua_pushnil(L);
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lua_pushstring(L, mz_error(status));
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return 2;
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}
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lua_pushlstring(L, (const char*)out, out_length);
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free(out);
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return 1;
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}
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static const luaL_reg R[] = {
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{"compress", l_compress},
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{NULL, NULL },
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};
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LUALIB_API int luaopen_deflate(lua_State *L) {
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luaL_register(L, "deflate", R);
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return 1;
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}
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