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8cde69f5f2
Windows APIs don't really provide a way to change a filename case. This
implements a little juggling to make this work. We first create a
guaranteed unique temporary file, we then replace the original file with
the temporary file and we finally rename it to the desired filename
case.
(cherry picked from commit d69d58deea)
384 lines
9.7 KiB
C++
384 lines
9.7 KiB
C++
/*************************************************************************/
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/* dir_access_windows.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#if defined(WINDOWS_ENABLED)
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#include "dir_access_windows.h"
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#include "os/memory.h"
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#include "print_string.h"
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#include <stdio.h>
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#include <wchar.h>
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#include <windows.h>
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/*
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[03:57] <reduz> yessopie, so i don't havemak to rely on unicows
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[03:58] <yessopie> reduz- yeah, all of the functions fail, and then you can call GetLastError () which will return 120
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[03:58] <drumstick> CategoryApl, hehe, what? :)
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[03:59] <CategoryApl> didn't Verona lead to some trouble
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[03:59] <yessopie> 120 = ERROR_CALL_NOT_IMPLEMENTED
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[03:59] <yessopie> (you can use that constant if you include winerr.h)
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[03:59] <CategoryApl> well answer with winning a compo
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[04:02] <yessopie> if ( SetCurrentDirectoryW ( L"." ) == FALSE && GetLastError () == ERROR_CALL_NOT_IMPLEMENTED ) { use ANSI }
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*/
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struct DirAccessWindowsPrivate {
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HANDLE h; //handle for findfirstfile
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WIN32_FIND_DATA f;
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WIN32_FIND_DATAW fu; //unicode version
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};
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// CreateFolderAsync
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Error DirAccessWindows::list_dir_begin() {
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_cisdir = false;
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_cishidden = false;
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list_dir_end();
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p->h = FindFirstFileExW((current_dir + "\\*").c_str(), FindExInfoStandard, &p->fu, FindExSearchNameMatch, NULL, 0);
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return (p->h == INVALID_HANDLE_VALUE) ? ERR_CANT_OPEN : OK;
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}
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String DirAccessWindows::get_next() {
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if (p->h == INVALID_HANDLE_VALUE)
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return "";
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_cisdir = (p->fu.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY);
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_cishidden = (p->fu.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN);
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String name = p->fu.cFileName;
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if (FindNextFileW(p->h, &p->fu) == 0) {
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FindClose(p->h);
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p->h = INVALID_HANDLE_VALUE;
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}
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return name;
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}
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bool DirAccessWindows::current_is_dir() const {
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return _cisdir;
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}
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bool DirAccessWindows::current_is_hidden() const {
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return _cishidden;
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}
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void DirAccessWindows::list_dir_end() {
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if (p->h != INVALID_HANDLE_VALUE) {
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FindClose(p->h);
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p->h = INVALID_HANDLE_VALUE;
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}
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}
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int DirAccessWindows::get_drive_count() {
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return drive_count;
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}
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String DirAccessWindows::get_drive(int p_drive) {
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if (p_drive < 0 || p_drive >= drive_count)
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return "";
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return String::chr(drives[p_drive]) + ":";
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}
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Error DirAccessWindows::change_dir(String p_dir) {
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GLOBAL_LOCK_FUNCTION
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p_dir = fix_path(p_dir);
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wchar_t real_current_dir_name[2048];
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GetCurrentDirectoryW(2048, real_current_dir_name);
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String prev_dir = real_current_dir_name;
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SetCurrentDirectoryW(current_dir.c_str());
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bool worked = (SetCurrentDirectoryW(p_dir.c_str()) != 0);
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String base = _get_root_path();
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if (base != "") {
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GetCurrentDirectoryW(2048, real_current_dir_name);
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String new_dir;
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new_dir = String(real_current_dir_name).replace("\\", "/");
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if (!new_dir.begins_with(base)) {
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worked = false;
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}
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}
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if (worked) {
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GetCurrentDirectoryW(2048, real_current_dir_name);
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current_dir = real_current_dir_name; // TODO, utf8 parser
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current_dir = current_dir.replace("\\", "/");
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} //else {
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SetCurrentDirectoryW(prev_dir.c_str());
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//}
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return worked ? OK : ERR_INVALID_PARAMETER;
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}
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Error DirAccessWindows::make_dir(String p_dir) {
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GLOBAL_LOCK_FUNCTION
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p_dir = fix_path(p_dir);
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if (p_dir.is_rel_path())
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p_dir = current_dir.plus_file(p_dir);
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p_dir = p_dir.replace("/", "\\");
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bool success;
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int err;
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p_dir = "\\\\?\\" + p_dir; //done according to
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// https://msdn.microsoft.com/en-us/library/windows/desktop/aa363855(v=vs.85).aspx
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success = CreateDirectoryW(p_dir.c_str(), NULL);
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err = GetLastError();
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if (success) {
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return OK;
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};
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if (err == ERROR_ALREADY_EXISTS || err == ERROR_ACCESS_DENIED) {
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return ERR_ALREADY_EXISTS;
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};
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return ERR_CANT_CREATE;
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}
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String DirAccessWindows::get_current_dir() {
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String base = _get_root_path();
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if (base != "") {
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String bd = current_dir.replace("\\", "/").replace_first(base, "");
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if (bd.begins_with("/"))
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return _get_root_string() + bd.substr(1, bd.length());
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else
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return _get_root_string() + bd;
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} else {
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}
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return current_dir;
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}
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bool DirAccessWindows::file_exists(String p_file) {
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GLOBAL_LOCK_FUNCTION
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if (!p_file.is_abs_path())
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p_file = get_current_dir().plus_file(p_file);
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p_file = fix_path(p_file);
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//p_file.replace("/","\\");
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//WIN32_FILE_ATTRIBUTE_DATA fileInfo;
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DWORD fileAttr;
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fileAttr = GetFileAttributesW(p_file.c_str());
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if (INVALID_FILE_ATTRIBUTES == fileAttr)
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return false;
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return !(fileAttr & FILE_ATTRIBUTE_DIRECTORY);
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}
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bool DirAccessWindows::dir_exists(String p_dir) {
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GLOBAL_LOCK_FUNCTION
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if (p_dir.is_rel_path())
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p_dir = get_current_dir().plus_file(p_dir);
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p_dir = fix_path(p_dir);
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//p_dir.replace("/","\\");
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//WIN32_FILE_ATTRIBUTE_DATA fileInfo;
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DWORD fileAttr;
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fileAttr = GetFileAttributesW(p_dir.c_str());
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if (INVALID_FILE_ATTRIBUTES == fileAttr)
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return false;
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return (fileAttr & FILE_ATTRIBUTE_DIRECTORY);
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}
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Error DirAccessWindows::rename(String p_path, String p_new_path) {
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if (p_path.is_rel_path())
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p_path = get_current_dir().plus_file(p_path);
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p_path = fix_path(p_path);
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if (p_new_path.is_rel_path())
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p_new_path = get_current_dir().plus_file(p_new_path);
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p_new_path = fix_path(p_new_path);
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// If we're only changing file name case we need to do a little juggling
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if (p_path.to_lower() == p_new_path.to_lower()) {
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WCHAR tmpfile[MAX_PATH];
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if (!GetTempFileNameW(fix_path(get_current_dir()).c_str(), NULL, 0, tmpfile)) {
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return FAILED;
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}
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if (!::ReplaceFileW(tmpfile, p_path.c_str(), NULL, 0, NULL, NULL)) {
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DeleteFileW(tmpfile);
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return FAILED;
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}
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return ::_wrename(tmpfile, p_new_path.c_str()) == 0 ? OK : FAILED;
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} else {
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if (file_exists(p_new_path)) {
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if (remove(p_new_path) != OK) {
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return FAILED;
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}
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}
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return ::_wrename(p_path.c_str(), p_new_path.c_str()) == 0 ? OK : FAILED;
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}
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}
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Error DirAccessWindows::remove(String p_path) {
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if (p_path.is_rel_path())
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p_path = get_current_dir().plus_file(p_path);
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p_path = fix_path(p_path);
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printf("erasing %s\n", p_path.utf8().get_data());
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//WIN32_FILE_ATTRIBUTE_DATA fileInfo;
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//DWORD fileAttr = GetFileAttributesExW(p_path.c_str(), GetFileExInfoStandard, &fileInfo);
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DWORD fileAttr;
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fileAttr = GetFileAttributesW(p_path.c_str());
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if (INVALID_FILE_ATTRIBUTES == fileAttr)
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return FAILED;
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if ((fileAttr & FILE_ATTRIBUTE_DIRECTORY))
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return ::_wrmdir(p_path.c_str()) == 0 ? OK : FAILED;
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else
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return ::_wunlink(p_path.c_str()) == 0 ? OK : FAILED;
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}
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/*
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FileType DirAccessWindows::get_file_type(const String& p_file) const {
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wchar_t real_current_dir_name[2048];
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GetCurrentDirectoryW(2048,real_current_dir_name);
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String prev_dir=real_current_dir_name;
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bool worked SetCurrentDirectoryW(current_dir.c_str());
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DWORD attr;
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if (worked) {
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WIN32_FILE_ATTRIBUTE_DATA fileInfo;
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attr = GetFileAttributesExW(p_file.c_str(), GetFileExInfoStandard, &fileInfo);
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}
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SetCurrentDirectoryW(prev_dir.c_str());
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if (!worked)
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return FILE_TYPE_NONE;
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return (attr&FILE_ATTRIBUTE_DIRECTORY)?FILE_TYPE_
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}
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*/
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size_t DirAccessWindows::get_space_left() {
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uint64_t bytes = 0;
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if (!GetDiskFreeSpaceEx(NULL, (PULARGE_INTEGER)&bytes, NULL, NULL))
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return 0;
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//this is either 0 or a value in bytes.
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return (size_t)bytes;
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}
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DirAccessWindows::DirAccessWindows() {
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p = memnew(DirAccessWindowsPrivate);
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p->h = INVALID_HANDLE_VALUE;
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current_dir = ".";
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drive_count = 0;
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#ifdef UWP_ENABLED
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Windows::Storage::StorageFolder ^ install_folder = Windows::ApplicationModel::Package::Current->InstalledLocation;
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change_dir(install_folder->Path->Data());
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#else
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DWORD mask = GetLogicalDrives();
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for (int i = 0; i < MAX_DRIVES; i++) {
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if (mask & (1 << i)) { //DRIVE EXISTS
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drives[drive_count] = 'a' + i;
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drive_count++;
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}
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}
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change_dir(".");
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#endif
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}
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DirAccessWindows::~DirAccessWindows() {
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memdelete(p);
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}
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#endif //windows DirAccess support
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