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file.gzip_compress and file.gzip_decompress #229

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merged 3 commits into from
Jun 7, 2024
Merged

file.gzip_compress and file.gzip_decompress #229

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bfeb328
add file.gzip_compress_write
Xertis Jun 6, 2024
224604e
Adding compression functions to lua scripting
Xertis Jun 6, 2024
8fac69f
Merge branch 'main' of https://github.com/Xertis/VoxelEngine-Cpp
Xertis Jun 6, 2024
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31 changes: 30 additions & 1 deletion src/logic/scripting/lua/libfile.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
#include "LuaState.hpp"
#include "../scripting.hpp"
#include "../../../engine.hpp"
#include "../../../coders/gzip.hpp"
#include "../../../files/files.hpp"
#include "../../../files/engine_paths.hpp"
#include "../../../util/stringutil.hpp"
Expand Down Expand Up @@ -129,7 +130,7 @@ static int l_file_read_bytes(lua_State* L) {
int newTable = lua_gettop(L);

for(size_t i = 0; i < length; i++) {
lua_pushnumber(L, bytes[i]);
lua_pushinteger(L, bytes[i]);
lua_rawseti(L, newTable, i+1);
}
return 1;
Expand Down Expand Up @@ -206,6 +207,32 @@ static int l_file_list(lua_State* L) {
return 1;
}

static int l_file_gzip_compress(lua_State* L) {
fs::path path = resolve_path(state->requireString(1));
if (fs::is_regular_file(path)) {
size_t length = static_cast<size_t>(fs::file_size(path));

auto compressed_bytes = gzip::compress(files::read_bytes(path, length).get(), length);

lua_pushboolean(L, files::write_bytes(path, compressed_bytes.data(), compressed_bytes.size()));
return 1;
}
throw std::runtime_error("file does not exist " + util::quote(path.u8string()));
}

static int l_file_gzip_decompress(lua_State* L) {
fs::path path = resolve_path(state->requireString(1));
if (fs::is_regular_file(path)) {
size_t length = static_cast<size_t>(fs::file_size(path));

auto decompressed_bytes = gzip::decompress(files::read_bytes(path, length).get(), length);

lua_pushboolean(L, files::write_bytes(path, decompressed_bytes.data(), decompressed_bytes.size()));
return 1;
}
throw std::runtime_error("file does not exist " + util::quote(path.u8string()));
}

const luaL_Reg filelib [] = {
{"exists", lua_wrap_errors<l_file_exists>},
{"find", lua_wrap_errors<l_file_find>},
Expand All @@ -222,5 +249,7 @@ const luaL_Reg filelib [] = {
{"resolve", lua_wrap_errors<l_file_resolve>},
{"write_bytes", lua_wrap_errors<l_file_write_bytes>},
{"write", lua_wrap_errors<l_file_write>},
{"gzip_compress", lua_wrap_errors<l_file_gzip_compress>},
{"gzip_decompress", lua_wrap_errors<l_file_gzip_decompress>},
{NULL, NULL}
};
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