src/filesystem/windows/SDL_sysfilesystem.c
author Ryan C. Gordon
Tue, 29 Dec 2015 02:29:56 -0500
changeset 9986 081fbd89a347
parent 9677 8201e3e3d026
child 9998 f67cf37e9cd4
permissions -rw-r--r--
NetBSD: improved joystick support (thanks, Thomas!).

This patch skips non-joystick HID devices and gives joysticks on NetBSD
a human readable name.

Fixes Bugzilla #3178.
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2015 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 #include "../../SDL_internal.h"
    22 
    23 #ifdef SDL_FILESYSTEM_WINDOWS
    24 
    25 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
    26 /* System dependent filesystem routines                                */
    27 
    28 #include "../../core/windows/SDL_windows.h"
    29 #include <shlobj.h>
    30 
    31 #include "SDL_assert.h"
    32 #include "SDL_error.h"
    33 #include "SDL_stdinc.h"
    34 #include "SDL_filesystem.h"
    35 
    36 char *
    37 SDL_GetBasePath(void)
    38 {
    39     typedef DWORD (WINAPI *GetModuleFileNameExW_t)(HANDLE, HMODULE, LPWSTR, DWORD);
    40     GetModuleFileNameExW_t pGetModuleFileNameExW;
    41     DWORD buflen = 128;
    42     WCHAR *path = NULL;
    43     HANDLE psapi = LoadLibrary(L"psapi.dll");
    44     char *retval = NULL;
    45     DWORD len = 0;
    46     int i;
    47 
    48     if (!psapi) {
    49         WIN_SetError("Couldn't load psapi.dll");
    50         return NULL;
    51     }
    52 
    53     pGetModuleFileNameExW = (GetModuleFileNameExW_t)GetProcAddress(psapi, "GetModuleFileNameExW");
    54     if (!pGetModuleFileNameExW) {
    55         WIN_SetError("Couldn't find GetModuleFileNameExW");
    56         FreeLibrary(psapi);
    57         return NULL;
    58     }
    59 
    60     while (SDL_TRUE) {
    61         void *ptr = SDL_realloc(path, buflen * sizeof (WCHAR));
    62         if (!ptr) {
    63             SDL_free(path);
    64             FreeLibrary(psapi);
    65             SDL_OutOfMemory();
    66             return NULL;
    67         }
    68 
    69         path = (WCHAR *) ptr;
    70 
    71         len = pGetModuleFileNameExW(GetCurrentProcess(), NULL, path, buflen);
    72         if (len != buflen) {
    73             break;
    74         }
    75 
    76         /* buffer too small? Try again. */
    77         buflen *= 2;
    78     }
    79 
    80     FreeLibrary(psapi);
    81 
    82     if (len == 0) {
    83         SDL_free(path);
    84         WIN_SetError("Couldn't locate our .exe");
    85         return NULL;
    86     }
    87 
    88     for (i = len-1; i > 0; i--) {
    89         if (path[i] == '\\') {
    90             break;
    91         }
    92     }
    93 
    94     SDL_assert(i > 0); /* Should have been an absolute path. */
    95     path[i+1] = '\0';  /* chop off filename. */
    96 
    97     retval = WIN_StringToUTF8(path);
    98     SDL_free(path);
    99 
   100     return retval;
   101 }
   102 
   103 char *
   104 SDL_GetPrefPath(const char *org, const char *app)
   105 {
   106     /*
   107      * Vista and later has a new API for this, but SHGetFolderPath works there,
   108      *  and apparently just wraps the new API. This is the new way to do it:
   109      *
   110      *     SHGetKnownFolderPath(FOLDERID_RoamingAppData, KF_FLAG_CREATE,
   111      *                          NULL, &wszPath);
   112      */
   113 
   114     WCHAR path[MAX_PATH];
   115     char *retval = NULL;
   116     WCHAR* worg = NULL;
   117     WCHAR* wapp = NULL;
   118     size_t new_wpath_len = 0;
   119     BOOL api_result = FALSE;
   120 
   121     if (!SUCCEEDED(SHGetFolderPathW(NULL, CSIDL_APPDATA | CSIDL_FLAG_CREATE, NULL, 0, path))) {
   122         WIN_SetError("Couldn't locate our prefpath");
   123         return NULL;
   124     }
   125 
   126     worg = WIN_UTF8ToString(org);
   127     if (worg == NULL) {
   128         SDL_OutOfMemory();
   129         return NULL;
   130     }
   131 
   132     wapp = WIN_UTF8ToString(app);
   133     if (wapp == NULL) {
   134         SDL_free(worg);
   135         SDL_OutOfMemory();
   136         return NULL;
   137     }
   138 
   139     new_wpath_len = lstrlenW(worg) + lstrlenW(wapp) + lstrlenW(path) + 3;
   140 
   141     if ((new_wpath_len + 1) > MAX_PATH) {
   142         SDL_free(worg);
   143         SDL_free(wapp);
   144         WIN_SetError("Path too long.");
   145         return NULL;
   146     }
   147 
   148     lstrcatW(path, L"\\");
   149     lstrcatW(path, worg);
   150     SDL_free(worg);
   151 
   152     api_result = CreateDirectoryW(path, NULL);
   153     if (api_result == FALSE) {
   154         if (GetLastError() != ERROR_ALREADY_EXISTS) {
   155             SDL_free(wapp);
   156             WIN_SetError("Couldn't create a prefpath.");
   157             return NULL;
   158         }
   159     }
   160 
   161     lstrcatW(path, L"\\");
   162     lstrcatW(path, wapp);
   163     SDL_free(wapp);
   164 
   165     api_result = CreateDirectoryW(path, NULL);
   166     if (api_result == FALSE) {
   167         if (GetLastError() != ERROR_ALREADY_EXISTS) {
   168             WIN_SetError("Couldn't create a prefpath.");
   169             return NULL;
   170         }
   171     }
   172 
   173     lstrcatW(path, L"\\");
   174 
   175     retval = WIN_StringToUTF8(path);
   176 
   177     return retval;
   178 }
   179 
   180 #endif /* SDL_FILESYSTEM_WINDOWS */
   181 
   182 /* vi: set ts=4 sw=4 expandtab: */