old data

StgSharp.Native/sdl-src/filesystem/windows/SDL_sysfilesystem.c

@@ -0,0 +1,382 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "SDL_internal.h"
+
+#ifdef SDL_FILESYSTEM_WINDOWS
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+// System dependent filesystem routines
+
+#include "../SDL_sysfilesystem.h"
+
+#include "../../core/windows/SDL_windows.h"
+#include <shlobj.h>
+#include <initguid.h>
+
+// These aren't all defined in older SDKs, so define them here
+DEFINE_GUID(SDL_FOLDERID_Profile, 0x5E6C858F, 0x0E22, 0x4760, 0x9A, 0xFE, 0xEA, 0x33, 0x17, 0xB6, 0x71, 0x73);
+DEFINE_GUID(SDL_FOLDERID_Desktop, 0xB4BFCC3A, 0xDB2C, 0x424C, 0xB0, 0x29, 0x7F, 0xE9, 0x9A, 0x87, 0xC6, 0x41);
+DEFINE_GUID(SDL_FOLDERID_Documents, 0xFDD39AD0, 0x238F, 0x46AF, 0xAD, 0xB4, 0x6C, 0x85, 0x48, 0x03, 0x69, 0xC7);
+DEFINE_GUID(SDL_FOLDERID_Downloads, 0x374de290, 0x123f, 0x4565, 0x91, 0x64, 0x39, 0xc4, 0x92, 0x5e, 0x46, 0x7b);
+DEFINE_GUID(SDL_FOLDERID_Music, 0x4BD8D571, 0x6D19, 0x48D3, 0xBE, 0x97, 0x42, 0x22, 0x20, 0x08, 0x0E, 0x43);
+DEFINE_GUID(SDL_FOLDERID_Pictures, 0x33E28130, 0x4E1E, 0x4676, 0x83, 0x5A, 0x98, 0x39, 0x5C, 0x3B, 0xC3, 0xBB);
+DEFINE_GUID(SDL_FOLDERID_SavedGames, 0x4c5c32ff, 0xbb9d, 0x43b0, 0xb5, 0xb4, 0x2d, 0x72, 0xe5, 0x4e, 0xaa, 0xa4);
+DEFINE_GUID(SDL_FOLDERID_Screenshots, 0xb7bede81, 0xdf94, 0x4682, 0xa7, 0xd8, 0x57, 0xa5, 0x26, 0x20, 0xb8, 0x6f);
+DEFINE_GUID(SDL_FOLDERID_Templates, 0xA63293E8, 0x664E, 0x48DB, 0xA0, 0x79, 0xDF, 0x75, 0x9E, 0x05, 0x09, 0xF7);
+DEFINE_GUID(SDL_FOLDERID_Videos, 0x18989B1D, 0x99B5, 0x455B, 0x84, 0x1C, 0xAB, 0x7C, 0x74, 0xE4, 0xDD, 0xFC);
+
+char *SDL_SYS_GetBasePath(void)
+{
+    DWORD buflen = 128;
+    WCHAR *path = NULL;
+    char *result = NULL;
+    DWORD len = 0;
+    int i;
+
+    while (true) {
+        void *ptr = SDL_realloc(path, buflen * sizeof(WCHAR));
+        if (!ptr) {
+            SDL_free(path);
+            return NULL;
+        }
+
+        path = (WCHAR *)ptr;
+
+        len = GetModuleFileNameW(NULL, path, buflen);
+        // if it truncated, then len >= buflen - 1
+        // if there was enough room (or failure), len < buflen - 1
+        if (len < buflen - 1) {
+            break;
+        }
+
+        // buffer too small? Try again.
+        buflen *= 2;
+    }
+
+    if (len == 0) {
+        SDL_free(path);
+        WIN_SetError("Couldn't locate our .exe");
+        return NULL;
+    }
+
+    for (i = len - 1; i > 0; i--) {
+        if (path[i] == '\\') {
+            break;
+        }
+    }
+
+    SDL_assert(i > 0);  // Should have been an absolute path.
+    path[i + 1] = '\0'; // chop off filename.
+
+    result = WIN_StringToUTF8W(path);
+    SDL_free(path);
+
+    return result;
+}
+
+char *SDL_SYS_GetPrefPath(const char *org, const char *app)
+{
+    /*
+     * Vista and later has a new API for this, but SHGetFolderPath works there,
+     *  and apparently just wraps the new API. This is the new way to do it:
+     *
+     *     SHGetKnownFolderPath(SDL_FOLDERID_RoamingAppData, KF_FLAG_CREATE,
+     *                          NULL, &wszPath);
+     */
+
+    HRESULT hr = E_FAIL;
+    WCHAR path[MAX_PATH];
+    char *result = NULL;
+    WCHAR *worg = NULL;
+    WCHAR *wapp = NULL;
+    size_t new_wpath_len = 0;
+    BOOL api_result = FALSE;
+
+    if (!app) {
+        SDL_InvalidParamError("app");
+        return NULL;
+    }
+    if (!org) {
+        org = "";
+    }
+
+    hr = SHGetFolderPathW(NULL, CSIDL_APPDATA | CSIDL_FLAG_CREATE, NULL, 0, path);
+    if (!SUCCEEDED(hr)) {
+        WIN_SetErrorFromHRESULT("Couldn't locate our prefpath", hr);
+        return NULL;
+    }
+
+    worg = WIN_UTF8ToStringW(org);
+    if (!worg) {
+        return NULL;
+    }
+
+    wapp = WIN_UTF8ToStringW(app);
+    if (!wapp) {
+        SDL_free(worg);
+        return NULL;
+    }
+
+    new_wpath_len = SDL_wcslen(worg) + SDL_wcslen(wapp) + SDL_wcslen(path) + 3;
+
+    if ((new_wpath_len + 1) > MAX_PATH) {
+        SDL_free(worg);
+        SDL_free(wapp);
+        WIN_SetError("Path too long.");
+        return NULL;
+    }
+
+    if (*worg) {
+        SDL_wcslcat(path, L"\\", SDL_arraysize(path));
+        SDL_wcslcat(path, worg, SDL_arraysize(path));
+    }
+    SDL_free(worg);
+
+    api_result = CreateDirectoryW(path, NULL);
+    if (api_result == FALSE) {
+        if (GetLastError() != ERROR_ALREADY_EXISTS) {
+            SDL_free(wapp);
+            WIN_SetError("Couldn't create a prefpath.");
+            return NULL;
+        }
+    }
+
+    SDL_wcslcat(path, L"\\", SDL_arraysize(path));
+    SDL_wcslcat(path, wapp, SDL_arraysize(path));
+    SDL_free(wapp);
+
+    api_result = CreateDirectoryW(path, NULL);
+    if (api_result == FALSE) {
+        if (GetLastError() != ERROR_ALREADY_EXISTS) {
+            WIN_SetError("Couldn't create a prefpath.");
+            return NULL;
+        }
+    }
+
+    SDL_wcslcat(path, L"\\", SDL_arraysize(path));
+
+    result = WIN_StringToUTF8W(path);
+
+    return result;
+}
+
+char *SDL_SYS_GetUserFolder(SDL_Folder folder)
+{
+    typedef HRESULT (WINAPI *pfnSHGetKnownFolderPath)(REFGUID /* REFKNOWNFOLDERID */, DWORD, HANDLE, PWSTR*);
+    HMODULE lib = LoadLibraryW(L"Shell32.dll");
+    pfnSHGetKnownFolderPath pSHGetKnownFolderPath = NULL;
+    char *result = NULL;
+
+    if (lib) {
+        pSHGetKnownFolderPath = (pfnSHGetKnownFolderPath)GetProcAddress(lib, "SHGetKnownFolderPath");
+    }
+
+    if (pSHGetKnownFolderPath) {
+        GUID type; // KNOWNFOLDERID
+        HRESULT hr;
+        wchar_t *path;
+
+        switch (folder) {
+        case SDL_FOLDER_HOME:
+            type = SDL_FOLDERID_Profile;
+            break;
+
+        case SDL_FOLDER_DESKTOP:
+            type = SDL_FOLDERID_Desktop;
+            break;
+
+        case SDL_FOLDER_DOCUMENTS:
+            type = SDL_FOLDERID_Documents;
+            break;
+
+        case SDL_FOLDER_DOWNLOADS:
+            type = SDL_FOLDERID_Downloads;
+            break;
+
+        case SDL_FOLDER_MUSIC:
+            type = SDL_FOLDERID_Music;
+            break;
+
+        case SDL_FOLDER_PICTURES:
+            type = SDL_FOLDERID_Pictures;
+            break;
+
+        case SDL_FOLDER_PUBLICSHARE:
+            SDL_SetError("Public share unavailable on Windows");
+            goto done;
+
+        case SDL_FOLDER_SAVEDGAMES:
+            type = SDL_FOLDERID_SavedGames;
+            break;
+
+        case SDL_FOLDER_SCREENSHOTS:
+            type = SDL_FOLDERID_Screenshots;
+            break;
+
+        case SDL_FOLDER_TEMPLATES:
+            type = SDL_FOLDERID_Templates;
+            break;
+
+        case SDL_FOLDER_VIDEOS:
+            type = SDL_FOLDERID_Videos;
+            break;
+
+        default:
+            SDL_SetError("Invalid SDL_Folder: %d", (int)folder);
+            goto done;
+        };
+
+        hr = pSHGetKnownFolderPath(&type, 0x00008000 /* KF_FLAG_CREATE */, NULL, &path);
+        if (SUCCEEDED(hr)) {
+            result = WIN_StringToUTF8W(path);
+        } else {
+            WIN_SetErrorFromHRESULT("Couldn't get folder", hr);
+        }
+
+    } else {
+        int type;
+        HRESULT hr;
+        wchar_t path[MAX_PATH];
+
+        switch (folder) {
+        case SDL_FOLDER_HOME:
+            type = CSIDL_PROFILE;
+            break;
+
+        case SDL_FOLDER_DESKTOP:
+            type = CSIDL_DESKTOP;
+            break;
+
+        case SDL_FOLDER_DOCUMENTS:
+            type = CSIDL_MYDOCUMENTS;
+            break;
+
+        case SDL_FOLDER_DOWNLOADS:
+            SDL_SetError("Downloads folder unavailable before Vista");
+            goto done;
+
+        case SDL_FOLDER_MUSIC:
+            type = CSIDL_MYMUSIC;
+            break;
+
+        case SDL_FOLDER_PICTURES:
+            type = CSIDL_MYPICTURES;
+            break;
+
+        case SDL_FOLDER_PUBLICSHARE:
+            SDL_SetError("Public share unavailable on Windows");
+            goto done;
+
+        case SDL_FOLDER_SAVEDGAMES:
+            SDL_SetError("Saved games unavailable before Vista");
+            goto done;
+
+        case SDL_FOLDER_SCREENSHOTS:
+            SDL_SetError("Screenshots folder unavailable before Vista");
+            goto done;
+
+        case SDL_FOLDER_TEMPLATES:
+            type = CSIDL_TEMPLATES;
+            break;
+
+        case SDL_FOLDER_VIDEOS:
+            type = CSIDL_MYVIDEO;
+            break;
+
+        default:
+            SDL_SetError("Unsupported SDL_Folder on Windows before Vista: %d", (int)folder);
+            goto done;
+        };
+
+        // Create the OS-specific folder if it doesn't already exist
+        type |= CSIDL_FLAG_CREATE;
+
+#if 0
+        // Apparently the oldest, but not supported in modern Windows
+        HRESULT hr = SHGetSpecialFolderPath(NULL, path, type, TRUE);
+#endif
+
+        /* Windows 2000/XP and later, deprecated as of Windows 10 (still
+           available), available in Wine (tested 6.0.3) */
+        hr = SHGetFolderPathW(NULL, type, NULL, SHGFP_TYPE_CURRENT, path);
+
+        // use `== TRUE` for SHGetSpecialFolderPath
+        if (SUCCEEDED(hr)) {
+            result = WIN_StringToUTF8W(path);
+        } else {
+            WIN_SetErrorFromHRESULT("Couldn't get folder", hr);
+        }
+    }
+
+    if (result) {
+        char *newresult = (char *) SDL_realloc(result, SDL_strlen(result) + 2);
+
+        if (!newresult) {
+            SDL_free(result);
+            result = NULL; // will be returned
+            goto done;
+        }
+
+        result = newresult;
+        SDL_strlcat(result, "\\", SDL_strlen(result) + 2);
+    }
+
+done:
+    if (lib) {
+        FreeLibrary(lib);
+    }
+    return result;
+}
+
+char *SDL_SYS_GetCurrentDirectory(void)
+{
+    WCHAR *wstr = NULL;
+    DWORD buflen = 0;
+    while (true) {
+        const DWORD bw = GetCurrentDirectoryW(buflen, wstr);
+        if (bw == 0) {
+            WIN_SetError("GetCurrentDirectoryW failed");
+            return NULL;
+        } else if (bw < buflen) {  // we got it!
+            // make sure there's a path separator at the end.
+            SDL_assert(bw < (buflen + 2));
+            if ((bw == 0) || (wstr[bw-1] != '\\')) {
+                wstr[bw] = '\\';
+                wstr[bw + 1] = '\0';
+            }
+            break;
+        }
+
+        void *ptr = SDL_realloc(wstr, (bw + 1) * sizeof (WCHAR));
+        if (!ptr) {
+            SDL_free(wstr);
+            return NULL;
+        }
+        wstr = (WCHAR *) ptr;
+        buflen = bw;
+    }
+
+    char *retval = WIN_StringToUTF8W(wstr);
+    SDL_free(wstr);
+    return retval;
+}
+
+#endif // SDL_FILESYSTEM_WINDOWS

StgSharp.Native/sdl-src/filesystem/windows/SDL_sysfsops.c

@@ -0,0 +1,231 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "SDL_internal.h"
+
+#if defined(SDL_FSOPS_WINDOWS)
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+// System dependent filesystem routines
+
+#include "../../core/windows/SDL_windows.h"
+#include "../SDL_sysfilesystem.h"
+
+bool SDL_SYS_EnumerateDirectory(const char *path, SDL_EnumerateDirectoryCallback cb, void *userdata)
+{
+    SDL_EnumerationResult result = SDL_ENUM_CONTINUE;
+    if (*path == '\0') {  // if empty (completely at the root), we need to enumerate drive letters.
+        const DWORD drives = GetLogicalDrives();
+        char name[] = { 0, ':', '\\', '\0' };
+        for (int i = 'A'; (result == SDL_ENUM_CONTINUE) && (i <= 'Z'); i++) {
+            if (drives & (1 << (i - 'A'))) {
+                name[0] = (char) i;
+                result = cb(userdata, "", name);
+            }
+        }
+    } else {
+        // you need a wildcard to enumerate through FindFirstFileEx(), but the wildcard is only checked in the
+        // filename element at the end of the path string, so always tack on a "\\*" to get everything, and
+        // also prevent any wildcards inserted by the app from being respected.
+        char *pattern = NULL;
+        int patternlen = SDL_asprintf(&pattern, "%s\\\\", path);  // we'll replace that second '\\' in the trimdown.
+        if ((patternlen == -1) || (!pattern)) {
+            return false;
+        }
+
+        // trim down to a single path separator at the end, in case the caller added one or more.
+        patternlen--;
+        while ((patternlen >= 0) && ((pattern[patternlen] == '\\') || (pattern[patternlen] == '/'))) {
+            pattern[patternlen--] ='\0';
+        }
+        pattern[++patternlen] = '\\';
+        pattern[++patternlen] = '*';
+        pattern[++patternlen] = '\0';
+
+        WCHAR *wpattern = WIN_UTF8ToStringW(pattern);
+        if (!wpattern) {
+            SDL_free(pattern);
+            return false;
+        }
+
+        pattern[--patternlen] = '\0';  // chop off the '*' so we just have the dirname with a path separator.
+
+        WIN32_FIND_DATAW entw;
+        HANDLE dir = FindFirstFileExW(wpattern, FindExInfoStandard, &entw, FindExSearchNameMatch, NULL, 0);
+        SDL_free(wpattern);
+        if (dir == INVALID_HANDLE_VALUE) {
+            SDL_free(pattern);
+            return WIN_SetError("Failed to enumerate directory");
+        }
+
+        do {
+            const WCHAR *fn = entw.cFileName;
+
+            if (fn[0] == '.') {  // ignore "." and ".."
+                if ((fn[1] == '\0') || ((fn[1] == '.') && (fn[2] == '\0'))) {
+                    continue;
+                }
+            }
+
+            char *utf8fn = WIN_StringToUTF8W(fn);
+            if (!utf8fn) {
+                result = SDL_ENUM_FAILURE;
+            } else {
+                result = cb(userdata, pattern, utf8fn);
+                SDL_free(utf8fn);
+            }
+        } while ((result == SDL_ENUM_CONTINUE) && (FindNextFileW(dir, &entw) != 0));
+
+        FindClose(dir);
+        SDL_free(pattern);
+    }
+
+    return (result != SDL_ENUM_FAILURE);
+}
+
+bool SDL_SYS_RemovePath(const char *path)
+{
+    WCHAR *wpath = WIN_UTF8ToStringW(path);
+    if (!wpath) {
+        return false;
+    }
+
+    WIN32_FILE_ATTRIBUTE_DATA info;
+    if (!GetFileAttributesExW(wpath, GetFileExInfoStandard, &info)) {
+        SDL_free(wpath);
+        if (GetLastError() == ERROR_FILE_NOT_FOUND) {
+            // Note that ERROR_PATH_NOT_FOUND means a parent dir is missing, and we consider that an error.
+            return true;  // thing is already gone, call it a success.
+        }
+        return WIN_SetError("Couldn't get path's attributes");
+    }
+
+    const int isdir = (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY);
+    const BOOL rc = isdir ? RemoveDirectoryW(wpath) : DeleteFileW(wpath);
+    SDL_free(wpath);
+    if (!rc) {
+        return WIN_SetError("Couldn't remove path");
+    }
+    return true;
+}
+
+bool SDL_SYS_RenamePath(const char *oldpath, const char *newpath)
+{
+    WCHAR *woldpath = WIN_UTF8ToStringW(oldpath);
+    if (!woldpath) {
+        return false;
+    }
+
+    WCHAR *wnewpath = WIN_UTF8ToStringW(newpath);
+    if (!wnewpath) {
+        SDL_free(woldpath);
+        return false;
+    }
+
+    const BOOL rc = MoveFileExW(woldpath, wnewpath, MOVEFILE_REPLACE_EXISTING);
+    SDL_free(wnewpath);
+    SDL_free(woldpath);
+    if (!rc) {
+        return WIN_SetError("Couldn't rename path");
+    }
+    return true;
+}
+
+bool SDL_SYS_CopyFile(const char *oldpath, const char *newpath)
+{
+    WCHAR *woldpath = WIN_UTF8ToStringW(oldpath);
+    if (!woldpath) {
+        return false;
+    }
+
+    WCHAR *wnewpath = WIN_UTF8ToStringW(newpath);
+    if (!wnewpath) {
+        SDL_free(woldpath);
+        return false;
+    }
+
+    const BOOL rc = CopyFileExW(woldpath, wnewpath, NULL, NULL, NULL, COPY_FILE_ALLOW_DECRYPTED_DESTINATION|COPY_FILE_NO_BUFFERING);
+    SDL_free(wnewpath);
+    SDL_free(woldpath);
+    if (!rc) {
+        return WIN_SetError("Couldn't copy path");
+    }
+    return true;
+}
+
+bool SDL_SYS_CreateDirectory(const char *path)
+{
+    WCHAR *wpath = WIN_UTF8ToStringW(path);
+    if (!wpath) {
+        return false;
+    }
+
+    DWORD rc = CreateDirectoryW(wpath, NULL);
+    if (!rc && (GetLastError() == ERROR_ALREADY_EXISTS)) {
+        WIN32_FILE_ATTRIBUTE_DATA winstat;
+        if (GetFileAttributesExW(wpath, GetFileExInfoStandard, &winstat)) {
+            if (winstat.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
+                rc = 1;  // exists and is already a directory: cool.
+            }
+        }
+    }
+
+    SDL_free(wpath);
+    if (!rc) {
+        return WIN_SetError("Couldn't create directory");
+    }
+    return true;
+}
+
+bool SDL_SYS_GetPathInfo(const char *path, SDL_PathInfo *info)
+{
+    WCHAR *wpath = WIN_UTF8ToStringW(path);
+    if (!wpath) {
+        return false;
+    }
+
+    WIN32_FILE_ATTRIBUTE_DATA winstat;
+    const BOOL rc = GetFileAttributesExW(wpath, GetFileExInfoStandard, &winstat);
+    SDL_free(wpath);
+    if (!rc) {
+        return WIN_SetError("Can't stat");
+    }
+
+    if (winstat.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
+        info->type = SDL_PATHTYPE_DIRECTORY;
+        info->size = 0;
+    } else if (winstat.dwFileAttributes & (FILE_ATTRIBUTE_OFFLINE | FILE_ATTRIBUTE_DEVICE)) {
+        info->type = SDL_PATHTYPE_OTHER;
+        info->size = ((((Uint64) winstat.nFileSizeHigh) << 32) | winstat.nFileSizeLow);
+    } else {
+        info->type = SDL_PATHTYPE_FILE;
+        info->size = ((((Uint64) winstat.nFileSizeHigh) << 32) | winstat.nFileSizeLow);
+    }
+
+    info->create_time = SDL_TimeFromWindows(winstat.ftCreationTime.dwLowDateTime, winstat.ftCreationTime.dwHighDateTime);
+    info->modify_time = SDL_TimeFromWindows(winstat.ftLastWriteTime.dwLowDateTime, winstat.ftLastWriteTime.dwHighDateTime);
+    info->access_time = SDL_TimeFromWindows(winstat.ftLastAccessTime.dwLowDateTime, winstat.ftLastAccessTime.dwHighDateTime);
+
+    return true;
+}
+
+#endif // SDL_FSOPS_WINDOWS
+