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SDL_sysfilesystem.c (3425B)

      1 /*
      2   Simple DirectMedia Layer
      3   Copyright (C) 1997-2020 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_OS2
     24 
     25 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
     26 /* System dependent filesystem routines                                */
     27 
     28 #include "SDL_error.h"
     29 #include "SDL_filesystem.h"
     30 #include "../../core/os2/SDL_os2.h"
     31 
     32 #define INCL_DOSFILEMGR
     33 #define INCL_DOSPROCESS
     34 #define INCL_DOSERRORS
     35 #include <os2.h>
     36 
     37 
     38 char *
     39 SDL_GetBasePath(void)
     40 {
     41     PTIB    tib;
     42     PPIB    pib;
     43     ULONG   ulRC = DosGetInfoBlocks(&tib, &pib);
     44     PCHAR   pcEnd;
     45     ULONG   cbResult;
     46     CHAR    acBuf[_MAX_PATH];
     47 
     48     if (ulRC != NO_ERROR) {
     49         debug_os2("DosGetInfoBlocks() failed, rc = %u", ulRC);
     50         return NULL;
     51     }
     52 
     53     pcEnd = SDL_strrchr(pib->pib_pchcmd, '\\');
     54     if (pcEnd != NULL)
     55         pcEnd++;
     56     else {
     57         if (pib->pib_pchcmd[1] == ':')
     58             pcEnd = &pib->pib_pchcmd[2];
     59         else {
     60             SDL_SetError("No path in pib->pib_pchcmd");
     61             return NULL;
     62         }
     63     }
     64 
     65     cbResult = pcEnd - pib->pib_pchcmd;
     66     SDL_memcpy(acBuf, pib->pib_pchcmd, cbResult);
     67     acBuf[cbResult] = '\0';
     68 
     69     return OS2_SysToUTF8(acBuf);
     70 }
     71 
     72 char *
     73 SDL_GetPrefPath(const char *org, const char *app)
     74 {
     75     PSZ     pszPath;
     76     CHAR    acBuf[_MAX_PATH];
     77     int     lPosApp, lPosOrg;
     78     PSZ     pszApp, pszOrg;
     79 
     80     if (!app) {
     81         SDL_InvalidParamError("app");
     82         return NULL;
     83     }
     84 
     85     pszPath = SDL_getenv("HOME");
     86     if (!pszPath) {
     87         pszPath = SDL_getenv("ETC");
     88         if (!pszPath) {
     89             SDL_SetError("HOME or ETC environment not set");
     90             return NULL;
     91         }
     92     }
     93 
     94     if (!org) {
     95         lPosApp = SDL_snprintf(acBuf, sizeof(acBuf) - 1, "%s", pszPath);
     96     } else {
     97         pszOrg = OS2_UTF8ToSys(org);
     98         if (!pszOrg) {
     99             SDL_OutOfMemory();
    100             return NULL;
    101         }
    102         lPosApp = SDL_snprintf(acBuf, sizeof(acBuf) - 1, "%s\\%s", pszPath, pszOrg);
    103         SDL_free(pszOrg);
    104     }
    105     if (lPosApp < 0)
    106         return NULL;
    107 
    108     DosCreateDir(acBuf, NULL);
    109 
    110     pszApp = OS2_UTF8ToSys(app);
    111     if (!pszApp) {
    112         SDL_OutOfMemory();
    113         return NULL;
    114     }
    115 
    116     lPosOrg = SDL_snprintf(&acBuf[lPosApp], sizeof(acBuf) - lPosApp - 1, "\\%s", pszApp);
    117     SDL_free(pszApp);
    118     if (lPosOrg < 0)
    119         return NULL;
    120 
    121     DosCreateDir(acBuf, NULL);
    122     *((PUSHORT)&acBuf[lPosApp + lPosOrg]) = (USHORT)'\0\\';
    123 
    124     return OS2_SysToUTF8(acBuf);
    125 }
    126 
    127 #endif /* SDL_FILESYSTEM_OS2 */
    128 
    129 /* vi: set ts=4 sw=4 expandtab: */