435 lines
13 KiB
C++
435 lines
13 KiB
C++
#include "lua_filesystem.h"
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#include <filesystem>
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#include <chrono>
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int luaopen_filesystem(lua_State* L)
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{
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luaL_newmetatable(L, "fs.file_handle");
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// Push iterator state metatables
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luaL_newmetatable(L, "fs.stdlibcpp.filesystem.directory_iterator");
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lua_pushcfunction(L, lua_fs_foreach_dir_dtor);
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lua_setfield(L, -2, "__gc");
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luaL_newmetatable(L, "fs.stdlibcpp.filesystem.recursive_directory_iterator");
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lua_pushcfunction(L, lua_fs_forall_dir_dtor);
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lua_setfield(L, -2, "__gc");
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// Push functions
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lua_newtable(L);
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lua_pushcfunction(L, lua_fs_is_newer);
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lua_setfield(L, -2, "is_newer");
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lua_pushcfunction(L, lua_fs_filter_newer);
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lua_setfield(L, -2, "filter_newer");
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lua_pushcfunction(L, lua_fs_absolute);
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lua_setfield(L, -2, "absolute");
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lua_pushcfunction(L, lua_fs_create_dir);
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lua_setfield(L, -2, "create_dir");
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lua_pushcfunction(L, lua_fs_exists);
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lua_setfield(L, -2, "exists");
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lua_pushcfunction(L, lua_fs_file_directory);
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lua_setfield(L, -2, "dir");
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lua_pushcfunction(L, lua_fs_file_extension);
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lua_setfield(L, -2, "extension");
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lua_pushcfunction(L, lua_fs_file_name);
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lua_setfield(L, -2, "file_name");
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lua_pushcfunction(L, lua_fs_forall_dir);
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lua_setfield(L, -2, "forall");
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lua_pushcfunction(L, lua_fs_foreach_dir);
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lua_setfield(L, -2, "foreach");
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lua_pushcfunction(L, lua_fs_is_dir);
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lua_setfield(L, -2, "is_dir");
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lua_pushcfunction(L, lua_fs_is_file);
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lua_setfield(L, -2, "is_file");
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lua_pushcfunction(L, lua_fs_last_modified);
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lua_setfield(L, -2, "last_modified");
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lua_pushcfunction(L, lua_fs_list_dir);
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lua_setfield(L, -2, "list_dir");
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lua_pushcfunction(L, lua_fs_list_alldirs);
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lua_setfield(L, -2, "list_alldirs");
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lua_pushcfunction(L, lua_fs_relative);
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lua_setfield(L, -2, "relative_to");
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lua_pushvalue(L, -1);
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lua_setfield(L, LUA_GLOBALSINDEX, "fs");
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return 1;
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}
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int lua_fs_list_dir(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a path to make the second argument relative to");
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const char* fpath = lua_tostring(L, 1);
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lua_newtable(L);
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uint32_t i = 1;
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for (const std::filesystem::path& p : std::filesystem::directory_iterator(fpath))
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{
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const std::string x = p.string();
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lua_pushlstring(L, x.c_str(), x.size());
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lua_rawseti(L, -2, i);
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}
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return 1;
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}
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int lua_fs_list_alldirs(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a path to make the second argument relative to");
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const char* fpath = lua_tostring(L, 1);
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lua_newtable(L);
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uint32_t i = 1;
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for (const std::filesystem::path& p : std::filesystem::directory_iterator(fpath))
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{
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const std::string x = p.string();
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lua_pushlstring(L, x.c_str(), x.size());
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lua_rawseti(L, -2, i);
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}
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return 1;
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}
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int lua_fs_foreach_dir(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a path");
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const char* path = lua_tostring(L, 1);
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void* ud = lua_newuserdata(L, sizeof(std::filesystem::directory_iterator));
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new (ud) std::filesystem::directory_iterator(path);
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luaL_getmetatable(L, "fs.stdlibcpp.filesystem.directory_iterator");
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lua_setmetatable(L, -2);
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lua_pushcclosure(L, lua_fs_foreach_dir_next, 1);
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return 1;
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}
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int lua_fs_forall_dir(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a path");
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const char* path = lua_tostring(L, 1);
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void* ud = lua_newuserdata(L, sizeof(std::filesystem::recursive_directory_iterator));
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new (ud) std::filesystem::recursive_directory_iterator(path);
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luaL_getmetatable(L, "fs.stdlibcpp.filesystem.recursive_directory_iterator");
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lua_setmetatable(L, -2);
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lua_pushcclosure(L, lua_fs_forall_dir_next, 1);
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return 1;
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}
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int lua_fs_foreach_dir_next(lua_State* L)
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{
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int idx = lua_upvalueindex(1);
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luaL_argcheck(L, lua_type(L, idx) == LUA_TUSERDATA, 1, "Expected first argument to fs.foreach_dir_next to be userdata<std::filesystem::directory_iterator>");
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void* ud = luaL_checkudata(L, idx, "fs.stdlibcpp.filesystem.directory_iterator");
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luaL_argcheck(L, ud != nullptr, 1, "Expected first argument's userdata type to be a std::filesystem::directory_iterator");
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std::filesystem::directory_iterator& x = *(std::filesystem::directory_iterator*)ud;
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if (x._At_end())
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return 0;
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std::string p = (*x).path().string();
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lua_pushlstring(L, p.c_str(), p.size());
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x++;
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return 1;
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}
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int lua_fs_forall_dir_next(lua_State* L)
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{
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int idx = lua_upvalueindex(1);
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luaL_argcheck(L, lua_type(L, idx) == LUA_TUSERDATA, 1, "Expected first argument to fs.forall_dir_next to be userdata<std::filesystem::recursive_directory_iterator>");
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void* ud = luaL_checkudata(L, idx, "fs.stdlibcpp.filesystem.recursive_directory_iterator");
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luaL_argcheck(L, ud != nullptr, 1, "Expected first argument's userdata type to be a std::filesystem::recursive_directory_iterator");
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std::filesystem::recursive_directory_iterator& x = *(std::filesystem::recursive_directory_iterator*)ud;
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if (x == std::filesystem::recursive_directory_iterator{})
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return 0;
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std::string p = (*x).path().string();
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lua_pushlstring(L, p.c_str(), p.size());
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x++;
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return 1;
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}
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int lua_fs_foreach_dir_dtor(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TUSERDATA, 1, "Expected first argument to fs.foreach_dir_next to be userdata<std::filesystem::directory_iterator>");
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void* ud = luaL_checkudata(L, 1, "fs.stdlibcpp.filesystem.directory_iterator");
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luaL_argcheck(L, ud != nullptr, 1, "Expected first argument's userdata type to be a std::filesystem::directory_iterator");
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std::filesystem::directory_iterator& x = *(std::filesystem::directory_iterator*)ud;
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x.~directory_iterator();
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return 0;
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}
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int lua_fs_forall_dir_dtor(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TUSERDATA, 1, "Expected first argument to fs.forall_dir_next to be userdata<std::filesystem::recursive_directory_iterator>");
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void* ud = luaL_checkudata(L, 1, "fs.stdlibcpp.filesystem.recursive_directory_iterator");
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luaL_argcheck(L, ud != nullptr, 1, "Expected first argument's userdata type to be a std::filesystem::recursive_directory_iterator");
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std::filesystem::recursive_directory_iterator& x = *(std::filesystem::recursive_directory_iterator*)ud;
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x.~recursive_directory_iterator();
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return 0;
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}
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int lua_fs_relative(lua_State* L)
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{
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try {
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a path to make the second argument relative to");
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luaL_argcheck(L, lua_type(L, 2) == LUA_TSTRING, 2, "Expected second argument to be a string representing a full file path");
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const std::string f = std::filesystem::relative(std::filesystem::path(lua_tostring(L, 1)), std::filesystem::path(lua_tostring(L, 2))).string();
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lua_pushlstring(L, f.c_str(), f.size());
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return 1;
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} catch (const std::exception& e)
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{
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lua_pushnil(L);
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lua_pushstring(L, e.what());
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return 2;
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}
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}
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int lua_fs_absolute(lua_State* L)
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{
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try {
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a full file path");
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const std::string f = std::filesystem::absolute(std::filesystem::path(lua_tostring(L, 1))).string();
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lua_pushlstring(L, f.c_str(), f.size());
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return 1;
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} catch (const std::exception& e)
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{
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lua_pushnil(L);
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lua_pushstring(L, e.what());
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return 2;
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}
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}
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int lua_fs_file_name(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a full file path");
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try {
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const std::string f = std::filesystem::path(lua_tostring(L, 1)).filename().string();
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lua_pushlstring(L, f.c_str(), f.size());
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return 1;
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} catch (const std::exception& e)
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{
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lua_pushnil(L);
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lua_pushstring(L, e.what());
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return 2;
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}
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}
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int lua_fs_file_extension(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a full file path");
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try {
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const std::string f = std::filesystem::path(lua_tostring(L, 1)).extension().string();
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lua_pushlstring(L, f.c_str(), f.size());
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} catch (const std::exception& e)
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{
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lua_pushnil(L);
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lua_pushstring(L, e.what());
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return 2;
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}
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return 1;
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}
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int lua_fs_file_directory(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a full file path");
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try {
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const std::string f = std::filesystem::path(lua_tostring(L, 1)).remove_filename().string();
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lua_pushlstring(L, f.c_str(), f.size());
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return 1;
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} catch (const std::exception& e)
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{
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lua_pushnil(L);
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lua_pushstring(L, e.what());
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return 2;
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}
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return 0;
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}
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int lua_fs_is_newer(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a full file path");
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const char* test_file = lua_tostring(L, 1);
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if (!std::filesystem::exists(test_file))
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{
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lua_pushboolean(L, false);
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return 1;
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}
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if (lua_type(L, 2) == LUA_TTABLE)
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{
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size_t tbl_len = lua_objlen(L, 2);
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lua_newtable(L);
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for (size_t i = 1; i <= tbl_len; ++i)
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{
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lua_rawgeti(L, 2, i);
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if (lua_type(L, -1) != LUA_TSTRING)
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return luaL_error(L, "Expected second argument at index %llu to be a string, not %s\n",
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i, lua_typename(L, lua_type(L, -1)));
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const char* target = lua_tostring(L, 2);
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lua_pushboolean(L,
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std::filesystem::last_write_time(test_file) > std::filesystem::last_write_time(target));
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lua_rawseti(L, -2, i);
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lua_pop(L, 1);
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}
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return 1;
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}
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else if (lua_type(L, 2) == LUA_TSTRING)
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{
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const char* target = lua_tostring(L, 2);
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if (!std::filesystem::exists(target))
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{
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lua_pushboolean(L, true);
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return 1;
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}
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lua_pushboolean(L,
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std::filesystem::last_write_time(test_file) > std::filesystem::last_write_time(target));
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return 1;
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}
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else return luaL_error(L, "Expected second argument to be a string or table of strings");
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}
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int lua_fs_filter_newer(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a full file path");
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const char* test_file = lua_tostring(L, 1);
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if (!std::filesystem::exists(test_file))
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{
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lua_pushnil(L);
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return 1;
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}
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if (lua_type(L, 2) == LUA_TTABLE)
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{
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size_t tbl_len = lua_objlen(L, 2);
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lua_newtable(L);
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for (size_t i = 1; i <= tbl_len; ++i)
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{
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lua_rawgeti(L, 2, i);
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if (lua_type(L, -1) != LUA_TSTRING)
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return luaL_error(L, "Expected second argument at index %llu to be a string, not %s\n",
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i, lua_typename(L, lua_type(L, -1)));
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const char* target = lua_tostring(L, 2);
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if (std::filesystem::last_write_time(test_file) > std::filesystem::last_write_time(target))
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{
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lua_pushvalue(L, -1);
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lua_rawseti(L, -2, lua_objlen(L, -2)+1);
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}
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lua_pop(L, 1);
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}
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return 1;
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}
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else if (lua_type(L, 2) == LUA_TSTRING)
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{
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const char* target = lua_tostring(L, 2);
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if (!std::filesystem::exists(target))
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{
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lua_pushvalue(L, 2);
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return 1;
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}
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if (std::filesystem::last_write_time(test_file) > std::filesystem::last_write_time(target))
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lua_pushvalue(L, 2);
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else lua_pushnil(L);
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return 1;
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}
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else return luaL_error(L, "Expected second argument to be a string or table of strings");
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}
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int lua_fs_last_modified(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a full file path");
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try {
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const uint64_t file_last_write = std::chrono::duration_cast<std::chrono::milliseconds>(
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std::chrono::clock_cast<std::chrono::system_clock>(
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std::filesystem::last_write_time(lua_tostring(L, 1))
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).time_since_epoch()
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).count();
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lua_pushinteger(L, file_last_write);
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return 1;
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} catch (const std::exception& e)
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{
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lua_pushnil(L);
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lua_pushstring(L, e.what());
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return 2;
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}
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return 0;
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}
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int lua_fs_exists(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a full file path");
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try {
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lua_pushboolean(L, std::filesystem::exists(lua_tostring(L, 1)));
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return 1;
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}
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catch (const std::exception& e)
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{
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lua_pushnil(L);
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lua_pushstring(L, e.what());
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return 2;
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}
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return 0;
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}
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int lua_fs_is_dir(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a full file path");
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try {
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lua_pushboolean(L, std::filesystem::is_directory(lua_tostring(L, 1)));
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return 1;
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}
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catch (const std::exception& e)
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{
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lua_pushnil(L);
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lua_pushstring(L, e.what());
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return 2;
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}
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return 0;
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}
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int lua_fs_is_file(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a full file path");
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try {
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lua_pushboolean(L, std::filesystem::is_regular_file(lua_tostring(L, 1)));
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return 1;
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}
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catch (const std::exception& e)
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{
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lua_pushnil(L);
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lua_pushstring(L, e.what());
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return 2;
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}
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return 0;
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}
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int lua_fs_create_dir(lua_State* L)
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{
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luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "Expected first argument to be a string representing a full file path");
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try {
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lua_pushboolean(L, std::filesystem::create_directories(lua_tostring(L, 1)));
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return 1;
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}
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catch (const std::exception& e)
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{
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lua_pushnil(L);
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lua_pushstring(L, e.what());
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return 2;
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}
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return 0;
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}
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