make compression lib

src/logic/scripting/lua/libs/api_lua.hpp

@@ -43,6 +43,7 @@ extern const luaL_Reg playerlib[];
 extern const luaL_Reg posteffectslib[]; // gfx.posteffects
 extern const luaL_Reg quatlib[];
 extern const luaL_Reg randomlib[];
+extern const luaL_Reg compressionlib[];
 extern const luaL_Reg text3dlib[]; // gfx.text3d
 extern const luaL_Reg timelib[];
 extern const luaL_Reg tomllib[];

src/logic/scripting/lua/libs/libcompression.cpp

@@ -0,0 +1,84 @@
+#include "api_lua.hpp"
+#include "coders/gzip.hpp"
+#include "../lua_engine.hpp"
+
+static int l_encode(lua::State* L) {
+    char argc = lua::gettop(L);
+    std::vector<unsigned char> compressedBytes;
+
+    std::string algo = "gzip";
+    if (argc >= 2) {
+        if (!lua::isstring(L, 2)) {
+            throw std::runtime_error("compression algorithm must be a string");
+        }
+        algo = lua::require_lstring(L, 2);
+    }
+
+    if (algo == "gzip") {
+        auto str = lua::bytearray_as_string(L, 1);
+        compressedBytes = gzip::compress(
+            reinterpret_cast<const ubyte*>(str.data()),
+            str.size()
+        );
+    } else {
+        throw std::runtime_error("unsupported compression algorithm");
+    }
+
+    if (argc < 3 || !lua::toboolean(L, 3)) {
+        lua::create_bytearray(L, std::move(compressedBytes));
+    } else {
+        size_t length = compressedBytes.size();
+        lua::createtable(L, length, 0);
+        int newTable = lua::gettop(L);
+        for (size_t i = 0; i < length; i++) {
+            lua::pushinteger(L, compressedBytes.data()[i]);
+            lua::rawseti(L, i + 1, newTable);
+        }
+    }
+
+    return 1;
+}
+
+static int l_decode(lua::State* L) {
+    char argc = lua::gettop(L);
+    std::vector<unsigned char> decompressedBytes;
+
+    std::string algo = "gzip";
+    if (argc >= 2) {
+        if (!lua::isstring(L, 2)) {
+            throw std::runtime_error("compression algorithm must be a string");
+        }
+        algo = lua::require_lstring(L, 2);
+    }
+
+    if (algo == "gzip") {
+        auto str = lua::bytearray_as_string(L, 1);
+        decompressedBytes = gzip::decompress(
+            reinterpret_cast<const ubyte*>(str.data()),
+            str.size()
+        );
+    } else {
+        throw std::runtime_error("unsupported compression algorithm");
+    }
+
+    if (argc < 3 || !lua::toboolean(L, 3)) {
+        lua::create_bytearray(L, std::move(decompressedBytes));
+    } else {
+        size_t length = decompressedBytes.size();
+        lua::createtable(L, length, 0);
+        int newTable = lua::gettop(L);
+        for (size_t i = 0; i < length; i++) {
+            lua::pushinteger(L, decompressedBytes.data()[i]);
+            lua::rawseti(L, i + 1, newTable);
+        }
+    }
+
+    return 1;
+}
+
+const luaL_Reg compressionlib[] = {
+    {"encode", lua::wrap<l_encode>},
+    {"decode", lua::wrap<l_decode>},
+    {NULL, NULL}
+};
+

src/logic/scripting/lua/libs/libfile.cpp

@@ -188,52 +188,6 @@ static int l_list(lua::State* L) {
     return 1;
 }
 
-static int l_gzip_compress(lua::State* L) {
-    char argc = lua::gettop(L);
-    auto str = lua::bytearray_as_string(L, 1);
-    auto compressedBytes = gzip::compress(
-        reinterpret_cast<const ubyte*>(str.data()),
-        str.size()
-    );
-
-    if (argc < 2 || !lua::toboolean(L, 2)) {
-        lua::create_bytearray(L, std::move(compressedBytes));
-    } else {
-        size_t length = compressedBytes.size();
-        lua::createtable(L, length, 0);
-        int newTable = lua::gettop(L);
-        for (size_t i = 0; i < length; i++) {
-            lua::pushinteger(L, compressedBytes.data()[i]);
-            lua::rawseti(L, i + 1, newTable);
-        }
-    }
-
-    return 1;
-}
-
-static int l_gzip_decompress(lua::State* L) {
-    char argc = lua::gettop(L);
-    auto str = lua::bytearray_as_string(L, 1);
-    auto decompressedBytes = gzip::decompress(
-        reinterpret_cast<const ubyte*>(str.data()),
-        str.size()
-    );
-
-    if (argc < 2 || !lua::toboolean(L, 2)) {
-        lua::create_bytearray(L, std::move(decompressedBytes));
-    } else {
-        size_t length = decompressedBytes.size();
-        lua::createtable(L, length, 0);
-        int newTable = lua::gettop(L);
-        for (size_t i = 0; i < length; i++) {
-            lua::pushinteger(L, decompressedBytes.data()[i]);
-            lua::rawseti(L, i + 1, newTable);
-        }
-    }
-
-    return 1;
-}
-
 static int l_read_combined_list(lua::State* L) {
     std::string path = lua::require_string(L, 1);
     if (path.find(':') != std::string::npos) {
@@ -437,8 +391,6 @@ const luaL_Reg filelib[] = {
     {"resolve", lua::wrap<l_resolve>},
     {"write_bytes", lua::wrap<l_write_bytes>},
     {"write", lua::wrap<l_write>},
-    {"gzip_compress", lua::wrap<l_gzip_compress>},
-    {"gzip_decompress", lua::wrap<l_gzip_decompress>},
     {"read_combined_list", lua::wrap<l_read_combined_list>},
     {"read_combined_object", lua::wrap<l_read_combined_object>},
     {"is_writeable", lua::wrap<l_is_writeable>},

src/logic/scripting/lua/lua_engine.cpp

@@ -52,6 +52,7 @@ static void create_libs(State* L, StateType stateType) {
     openlib(L, "pack", packlib);
     openlib(L, "quat", quatlib);
     openlib(L, "random", randomlib);
+    openlib(L, "compression", compressionlib);
     openlib(L, "toml", tomllib);
     openlib(L, "utf8", utf8lib);
     openlib(L, "vec2", vec2lib);