src/filesystem/winrt/SDL_sysfilesystem.cpp
author David Ludwig <dludwig@pobox.com>
Sun, 23 Nov 2014 08:59:01 -0500
changeset 9229 c4ff10b9a23c
parent 9228 9ecf7c9f49e5
child 9241 4900e838abbc
permissions -rw-r--r--
WinRT: fixed an invalid comment in SDL_GetPrefPath() (for WinRT)
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
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  This software is provided 'as-is', without any express or implied
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  warranty.  In no event will the authors be held liable for any damages
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  arising from the use of this software.
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  Permission is granted to anyone to use this software for any purpose,
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  including commercial applications, and to alter it and redistribute it
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  freely, subject to the following restrictions:
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  1. The origin of this software must not be misrepresented; you must not
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     claim that you wrote the original software. If you use this software
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     in a product, an acknowledgment in the product documentation would be
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     appreciated but is not required.
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  2. Altered source versions must be plainly marked as such, and must not be
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     misrepresented as being the original software.
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  3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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/* TODO, WinRT: include copyright info in SDL_winrtpaths.cpp
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   TODO, WinRT: remove the need to compile this with C++/CX (/ZW) extensions, and if possible, without C++ at all
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*/
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#ifdef __WINRT__
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extern "C" {
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#include "SDL_filesystem.h"
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#include "SDL_error.h"
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#include "SDL_stdinc.h"
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#include "SDL_system.h"
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#include "../../core/windows/SDL_windows.h"
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}
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#include <string>
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#include <unordered_map>
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using namespace std;
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using namespace Windows::Storage;
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extern "C" const wchar_t *
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SDL_WinRTGetFSPathUNICODE(SDL_WinRT_Path pathType)
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{
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    switch (pathType) {
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        case SDL_WINRT_PATH_INSTALLED_LOCATION:
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        {
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            static wstring path;
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            if (path.empty()) {
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                path = Windows::ApplicationModel::Package::Current->InstalledLocation->Path->Data();
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            }
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            return path.c_str();
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        }
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        case SDL_WINRT_PATH_LOCAL_FOLDER:
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        {
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            static wstring path;
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            if (path.empty()) {
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                path = ApplicationData::Current->LocalFolder->Path->Data();
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            }
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            return path.c_str();
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        }
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#if (WINAPI_FAMILY != WINAPI_FAMILY_PHONE_APP) || (NTDDI_VERSION > NTDDI_WIN8)
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        case SDL_WINRT_PATH_ROAMING_FOLDER:
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        {
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            static wstring path;
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            if (path.empty()) {
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                path = ApplicationData::Current->RoamingFolder->Path->Data();
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            }
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            return path.c_str();
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        }
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        case SDL_WINRT_PATH_TEMP_FOLDER:
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        {
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            static wstring path;
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            if (path.empty()) {
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                path = ApplicationData::Current->TemporaryFolder->Path->Data();
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            }
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            return path.c_str();
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        }
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#endif
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        default:
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            break;
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    }
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    SDL_Unsupported();
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    return NULL;
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}
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extern "C" const char *
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SDL_WinRTGetFSPathUTF8(SDL_WinRT_Path pathType)
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{
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    typedef unordered_map<SDL_WinRT_Path, string> UTF8PathMap;
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    static UTF8PathMap utf8Paths;
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    UTF8PathMap::iterator searchResult = utf8Paths.find(pathType);
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    if (searchResult != utf8Paths.end()) {
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        return searchResult->second.c_str();
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    }
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    const wchar_t * ucs2Path = SDL_WinRTGetFSPathUNICODE(pathType);
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    if (!ucs2Path) {
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        return NULL;
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    }
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    char * utf8Path = WIN_StringToUTF8(ucs2Path);
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    utf8Paths[pathType] = utf8Path;
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    SDL_free(utf8Path);
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    return utf8Paths[pathType].c_str();
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}
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extern "C" char *
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SDL_GetBasePath(void)
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{
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    const char * srcPath = SDL_WinRTGetFSPathUTF8(SDL_WINRT_PATH_INSTALLED_LOCATION);
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    size_t destPathLen;
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    char * destPath = NULL;
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    if (!srcPath) {
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        SDL_SetError("Couldn't locate our basepath: %s", SDL_GetError());
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        return NULL;
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    }
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    destPathLen = SDL_strlen(srcPath) + 2;
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    destPath = (char *) SDL_malloc(destPathLen);
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    if (!destPath) {
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        SDL_OutOfMemory();
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        return NULL;
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    }
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    SDL_snprintf(destPath, destPathLen, "%s\\", srcPath);
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    return destPath;
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}
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extern "C" char *
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SDL_GetPrefPath(const char *org, const char *app)
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{
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    /* WinRT note: The 'SHGetFolderPath' API that is used in Windows 7 and
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     * earlier is not available on WinRT or Windows Phone.  WinRT provides
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     * a similar API, but SHGetFolderPath can't be called, at least not
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     * without violating Microsoft's app-store requirements.
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     */
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#if WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP
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    /* A 'Roaming' folder is not available in Windows Phone 8.0, however a
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     * 'Local' folder is.  Use the 'Local' folder in order to preserve
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     * compatibility with Windows Phone 8.0, and with app-installs that have
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     * been updated from 8.0-based, to 8.1-based apps.
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     */
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    const char * srcPath = SDL_WinRTGetFSPathUTF8(SDL_WINRT_PATH_LOCAL_FOLDER);
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#else
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    /* A 'Roaming' folder is available on Windows 8 and 8.1.  Use that.
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     */
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    const char * srcPath = SDL_WinRTGetFSPathUTF8(SDL_WINRT_PATH_ROAMING_FOLDER);
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#endif
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    size_t destPathLen;
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    char * destPath = NULL;
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    if (!srcPath) {
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        SDL_SetError("Couldn't locate our basepath: %s", SDL_GetError());
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        return NULL;
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    }
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    destPathLen = SDL_strlen(srcPath) + SDL_strlen(org) + SDL_strlen(app) + 4;
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    destPath = (char *) SDL_malloc(destPathLen);
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    if (!destPath) {
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        SDL_OutOfMemory();
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        return NULL;
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    }
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    SDL_snprintf(destPath, destPathLen, "%s\\%s\\%s\\", srcPath, org, app);
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    return destPath;
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}
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#endif /* __WINRT__ */