/*************************************************************************/ /* file_access_windows.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */ /* */ /* 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. */ /*************************************************************************/ #ifdef WINDOWS_ENABLED #include "file_access_windows.h" #include "shlwapi.h" #include #include "print_string.h" #include #include #include #include #ifdef _MSC_VER #define S_ISREG(m) ((m)&_S_IFREG) #endif void FileAccessWindows::check_errors() const { ERR_FAIL_COND(!f); if (feof(f)) { last_error = ERR_FILE_EOF; } } Error FileAccessWindows::_open(const String &p_path, int p_mode_flags) { String filename = fix_path(p_path); if (f) close(); const wchar_t *mode_string; if (p_mode_flags == READ) mode_string = L"rb"; else if (p_mode_flags == WRITE) mode_string = L"wb"; else if (p_mode_flags == READ_WRITE) mode_string = L"rb+"; else if (p_mode_flags == WRITE_READ) mode_string = L"wb+"; else return ERR_INVALID_PARAMETER; /* pretty much every implementation that uses fopen as primary backend supports utf8 encoding */ struct _stat st; if (_wstat(filename.c_str(), &st) == 0) { if (!S_ISREG(st.st_mode)) return ERR_FILE_CANT_OPEN; }; if (is_backup_save_enabled() && p_mode_flags & WRITE && !(p_mode_flags & READ)) { save_path = filename; filename = filename + ".tmp"; //print_line("saving instead to "+path); } f = _wfopen(filename.c_str(), mode_string); if (f == NULL) { last_error = ERR_FILE_CANT_OPEN; return ERR_FILE_CANT_OPEN; } else { last_error = OK; flags = p_mode_flags; return OK; } } void FileAccessWindows::close() { if (!f) return; fclose(f); f = NULL; if (save_path != "") { //unlink(save_path.utf8().get_data()); //print_line("renaming.."); //_wunlink(save_path.c_str()); //unlink if exists //int rename_error = _wrename((save_path+".tmp").c_str(),save_path.c_str()); bool rename_error; #ifdef UWP_ENABLED // UWP has no PathFileExists, so we check attributes instead DWORD fileAttr; fileAttr = GetFileAttributesW(save_path.c_str()); if (INVALID_FILE_ATTRIBUTES == fileAttr) { #else if (!PathFileExistsW(save_path.c_str())) { #endif //creating new file rename_error = _wrename((save_path + ".tmp").c_str(), save_path.c_str()) != 0; } else { //atomic replace for existing file rename_error = !ReplaceFileW(save_path.c_str(), (save_path + ".tmp").c_str(), NULL, 2 | 4, NULL, NULL); } if (rename_error && close_fail_notify) { close_fail_notify(save_path); } save_path = ""; ERR_FAIL_COND(rename_error); } } bool FileAccessWindows::is_open() const { return (f != NULL); } void FileAccessWindows::seek(size_t p_position) { ERR_FAIL_COND(!f); last_error = OK; if (fseek(f, p_position, SEEK_SET)) check_errors(); } void FileAccessWindows::seek_end(int64_t p_position) { ERR_FAIL_COND(!f); if (fseek(f, p_position, SEEK_END)) check_errors(); } size_t FileAccessWindows::get_position() const { size_t aux_position = 0; aux_position = ftell(f); if (!aux_position) { check_errors(); }; return aux_position; } size_t FileAccessWindows::get_len() const { ERR_FAIL_COND_V(!f, 0); size_t pos = get_position(); fseek(f, 0, SEEK_END); int size = get_position(); fseek(f, pos, SEEK_SET); return size; } bool FileAccessWindows::eof_reached() const { check_errors(); return last_error == ERR_FILE_EOF; } uint8_t FileAccessWindows::get_8() const { ERR_FAIL_COND_V(!f, 0); uint8_t b; if (fread(&b, 1, 1, f) == 0) { check_errors(); b = '\0'; }; return b; } int FileAccessWindows::get_buffer(uint8_t *p_dst, int p_length) const { ERR_FAIL_COND_V(!f, -1); int read = fread(p_dst, 1, p_length, f); check_errors(); return read; }; Error FileAccessWindows::get_error() const { return last_error; } void FileAccessWindows::flush() { ERR_FAIL_COND(!f); fflush(f); } void FileAccessWindows::store_8(uint8_t p_dest) { ERR_FAIL_COND(!f); fwrite(&p_dest, 1, 1, f); } bool FileAccessWindows::file_exists(const String &p_name) { FILE *g; //printf("opening file %s\n", p_fname.c_str()); String filename = fix_path(p_name); g = _wfopen(filename.c_str(), L"rb"); if (g == NULL) { return false; } else { fclose(g); return true; } } uint64_t FileAccessWindows::_get_modified_time(const String &p_file) { String file = fix_path(p_file); if (file.ends_with("/") && file != "/") file = file.substr(0, file.length() - 1); struct _stat st; int rv = _wstat(file.c_str(), &st); if (rv == 0) { return st.st_mtime; } else { print_line("no access to " + file); } ERR_FAIL_V(0); }; FileAccessWindows::FileAccessWindows() { f = NULL; flags = 0; last_error = OK; } FileAccessWindows::~FileAccessWindows() { close(); } #endif