SDL_sysfilesystem.c
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2018 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 "../../core/windows/SDL_windows.h"
#include <shlobj.h>
#include "SDL_assert.h"
#include "SDL_error.h"
#include "SDL_stdinc.h"
#include "SDL_filesystem.h"
char *
SDL_GetBasePath(void)
{
typedef DWORD (WINAPI *GetModuleFileNameExW_t)(HANDLE, HMODULE, LPWSTR, DWORD);
GetModuleFileNameExW_t pGetModuleFileNameExW;
DWORD buflen = 128;
WCHAR *path = NULL;
HANDLE psapi = LoadLibrary(L"psapi.dll");
char *retval = NULL;
DWORD len = 0;
int i;
if (!psapi) {
WIN_SetError("Couldn't load psapi.dll");
return NULL;
}
pGetModuleFileNameExW = (GetModuleFileNameExW_t)GetProcAddress(psapi, "GetModuleFileNameExW");
if (!pGetModuleFileNameExW) {
WIN_SetError("Couldn't find GetModuleFileNameExW");
FreeLibrary(psapi);
return NULL;
}
while (SDL_TRUE) {
void *ptr = SDL_realloc(path, buflen * sizeof (WCHAR));
if (!ptr) {
SDL_free(path);
FreeLibrary(psapi);
SDL_OutOfMemory();
return NULL;
}
path = (WCHAR *) ptr;
len = pGetModuleFileNameExW(GetCurrentProcess(), NULL, path, buflen);
if (len != buflen) {
break;
}
/* buffer too small? Try again. */
buflen *= 2;
}
FreeLibrary(psapi);
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. */
retval = WIN_StringToUTF8(path);
SDL_free(path);
return retval;
}
char *
SDL_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(FOLDERID_RoamingAppData, KF_FLAG_CREATE,
* NULL, &wszPath);
*/
WCHAR path[MAX_PATH];
char *retval = 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 = "";
}
if (!SUCCEEDED(SHGetFolderPathW(NULL, CSIDL_APPDATA | CSIDL_FLAG_CREATE, NULL, 0, path))) {
WIN_SetError("Couldn't locate our prefpath");
return NULL;
}
worg = WIN_UTF8ToString(org);
if (worg == NULL) {
SDL_OutOfMemory();
return NULL;
}
wapp = WIN_UTF8ToString(app);
if (wapp == NULL) {
SDL_free(worg);
SDL_OutOfMemory();
return NULL;
}
new_wpath_len = lstrlenW(worg) + lstrlenW(wapp) + lstrlenW(path) + 3;
if ((new_wpath_len + 1) > MAX_PATH) {
SDL_free(worg);
SDL_free(wapp);
WIN_SetError("Path too long.");
return NULL;
}
if (*worg) {
lstrcatW(path, L"\\");
lstrcatW(path, worg);
}
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;
}
}
lstrcatW(path, L"\\");
lstrcatW(path, wapp);
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;
}
}
lstrcatW(path, L"\\");
retval = WIN_StringToUTF8(path);
return retval;
}
#endif /* SDL_FILESYSTEM_WINDOWS */
/* vi: set ts=4 sw=4 expandtab: */
WIN_UTF8ToString
#define WIN_UTF8ToString(S)
Definition: SDL_windows.h:47
SDL_TRUE
Definition: SDL_stdinc.h:142
SDL_InvalidParamError
#define SDL_InvalidParamError(param)
Definition: SDL_error.h:54
SDL_realloc
#define SDL_realloc
Definition: SDL_dynapi_overrides.h:376
len
GLenum GLsizei len
Definition: SDL_opengl_glext.h:2926
retval
SDL_bool retval
Definition: testgamecontroller.c:65
SDL_free
#define SDL_free
Definition: SDL_dynapi_overrides.h:377
WIN_StringToUTF8
#define WIN_StringToUTF8(S)
Definition: SDL_windows.h:46
i
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50
SDL_assert
#define SDL_assert(condition)
Definition: SDL_assert.h:169
NULL
#define NULL
Definition: begin_code.h:164
SDL_OutOfMemory
#define SDL_OutOfMemory()
Definition: SDL_error.h:52
SUCCEEDED
#define SUCCEEDED(x)
Definition: SDL_directx.h:51
WIN_SetError
int WIN_SetError(const char *prefix)
SDL_stdinc.h
SDL_GetPrefPath
#define SDL_GetPrefPath
Definition: SDL_dynapi_overrides.h:134
SDL_filesystem.h
Include file for filesystem SDL API functions.
path
GLsizei const GLchar *const * path
Definition: SDL_opengl_glext.h:3730
FALSE
#define FALSE
Definition: edid-parse.c:34
SDL_GetBasePath
char * SDL_GetBasePath(void)
Get the path where the application resides.
SDL_error.h
SDL_assert.h