win32.cpp

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00001 /* $Id$ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "../../stdafx.h"
00013 #include "../../debug.h"
00014 #include "../../gfx_func.h"
00015 #include "../../textbuf_gui.h"
00016 #include "../../fileio_func.h"
00017 #include "../../fios.h"
00018 #include <windows.h>
00019 #include <fcntl.h>
00020 #include <shlobj.h> /* SHGetFolderPath */
00021 #include <Shellapi.h>
00022 #include "win32.h"
00023 #include "../../core/alloc_func.hpp"
00024 #include "../../openttd.h"
00025 #include "../../core/random_func.hpp"
00026 #include "../../string_func.h"
00027 #include "../../crashlog.h"
00028 #include <errno.h>
00029 #include <sys/stat.h>
00030 
00031 static bool _has_console;
00032 static bool _cursor_disable = true;
00033 static bool _cursor_visible = true;
00034 
00035 bool MyShowCursor(bool show, bool toggle)
00036 {
00037   if (toggle) _cursor_disable = !_cursor_disable;
00038   if (_cursor_disable) return show;
00039   if (_cursor_visible == show) return show;
00040 
00041   _cursor_visible = show;
00042   ShowCursor(show);
00043 
00044   return !show;
00045 }
00046 
00052 bool LoadLibraryList(Function proc[], const char *dll)
00053 {
00054   while (*dll != '\0') {
00055     HMODULE lib;
00056     lib = LoadLibrary(MB_TO_WIDE(dll));
00057 
00058     if (lib == NULL) return false;
00059     for (;;) {
00060       FARPROC p;
00061 
00062       while (*dll++ != '\0') { /* Nothing */ }
00063       if (*dll == '\0') break;
00064 #if defined(WINCE)
00065       p = GetProcAddress(lib, MB_TO_WIDE(dll));
00066 #else
00067       p = GetProcAddress(lib, dll);
00068 #endif
00069       if (p == NULL) return false;
00070       *proc++ = (Function)p;
00071     }
00072     dll++;
00073   }
00074   return true;
00075 }
00076 
00077 void ShowOSErrorBox(const char *buf, bool system)
00078 {
00079   MyShowCursor(true);
00080   MessageBox(GetActiveWindow(), MB_TO_WIDE(buf), _T("Error!"), MB_ICONSTOP);
00081 }
00082 
00083 void OSOpenBrowser(const char *url)
00084 {
00085   ShellExecute(GetActiveWindow(), _T("open"), MB_TO_WIDE(url), NULL, NULL, SW_SHOWNORMAL);
00086 }
00087 
00088 /* Code below for windows version of opendir/readdir/closedir copied and
00089  * modified from Jan Wassenberg's GPL implementation posted over at
00090  * http://www.gamedev.net/community/forums/topic.asp?topic_id=364584&whichpage=1&#2398903 */
00091 
00092 /* suballocator - satisfies most requests with a reusable static instance.
00093  * this avoids hundreds of alloc/free which would fragment the heap.
00094  * To guarantee concurrency, we fall back to malloc if the instance is
00095  * already in use (it's important to avoid surprises since this is such a
00096  * low-level routine). */
00097 static DIR _global_dir;
00098 static LONG _global_dir_is_in_use = false;
00099 
00100 static inline DIR *dir_calloc()
00101 {
00102   DIR *d;
00103 
00104   if (InterlockedExchange(&_global_dir_is_in_use, true) == (LONG)true) {
00105     d = CallocT<DIR>(1);
00106   } else {
00107     d = &_global_dir;
00108     memset(d, 0, sizeof(*d));
00109   }
00110   return d;
00111 }
00112 
00113 static inline void dir_free(DIR *d)
00114 {
00115   if (d == &_global_dir) {
00116     _global_dir_is_in_use = (LONG)false;
00117   } else {
00118     free(d);
00119   }
00120 }
00121 
00122 DIR *opendir(const TCHAR *path)
00123 {
00124   DIR *d;
00125   UINT sem = SetErrorMode(SEM_FAILCRITICALERRORS); // disable 'no-disk' message box
00126   DWORD fa = GetFileAttributes(path);
00127 
00128   if ((fa != INVALID_FILE_ATTRIBUTES) && (fa & FILE_ATTRIBUTE_DIRECTORY)) {
00129     d = dir_calloc();
00130     if (d != NULL) {
00131       TCHAR search_path[MAX_PATH];
00132       bool slash = path[_tcslen(path) - 1] == '\\';
00133 
00134       /* build search path for FindFirstFile, try not to append additional slashes
00135        * as it throws Win9x off its groove for root directories */
00136       _sntprintf(search_path, lengthof(search_path), _T("%s%s*"), path, slash ? _T("") : _T("\\"));
00137       *lastof(search_path) = '\0';
00138       d->hFind = FindFirstFile(search_path, &d->fd);
00139 
00140       if (d->hFind != INVALID_HANDLE_VALUE ||
00141           GetLastError() == ERROR_NO_MORE_FILES) { // the directory is empty
00142         d->ent.dir = d;
00143         d->at_first_entry = true;
00144       } else {
00145         dir_free(d);
00146         d = NULL;
00147       }
00148     } else {
00149       errno = ENOMEM;
00150     }
00151   } else {
00152     /* path not found or not a directory */
00153     d = NULL;
00154     errno = ENOENT;
00155   }
00156 
00157   SetErrorMode(sem); // restore previous setting
00158   return d;
00159 }
00160 
00161 struct dirent *readdir(DIR *d)
00162 {
00163   DWORD prev_err = GetLastError(); // avoid polluting last error
00164 
00165   if (d->at_first_entry) {
00166     /* the directory was empty when opened */
00167     if (d->hFind == INVALID_HANDLE_VALUE) return NULL;
00168     d->at_first_entry = false;
00169   } else if (!FindNextFile(d->hFind, &d->fd)) { // determine cause and bail
00170     if (GetLastError() == ERROR_NO_MORE_FILES) SetLastError(prev_err);
00171     return NULL;
00172   }
00173 
00174   /* This entry has passed all checks; return information about it.
00175    * (note: d_name is a pointer; see struct dirent definition) */
00176   d->ent.d_name = d->fd.cFileName;
00177   return &d->ent;
00178 }
00179 
00180 int closedir(DIR *d)
00181 {
00182   FindClose(d->hFind);
00183   dir_free(d);
00184   return 0;
00185 }
00186 
00187 bool FiosIsRoot(const char *file)
00188 {
00189   return file[3] == '\0'; // C:\...
00190 }
00191 
00192 void FiosGetDrives()
00193 {
00194 #if defined(WINCE)
00195   /* WinCE only knows one drive: / */
00196   FiosItem *fios = _fios_items.Append();
00197   fios->type = FIOS_TYPE_DRIVE;
00198   fios->mtime = 0;
00199   snprintf(fios->name, lengthof(fios->name), PATHSEP "");
00200   strecpy(fios->title, fios->name, lastof(fios->title));
00201 #else
00202   TCHAR drives[256];
00203   const TCHAR *s;
00204 
00205   GetLogicalDriveStrings(lengthof(drives), drives);
00206   for (s = drives; *s != '\0';) {
00207     FiosItem *fios = _fios_items.Append();
00208     fios->type = FIOS_TYPE_DRIVE;
00209     fios->mtime = 0;
00210     snprintf(fios->name, lengthof(fios->name),  "%c:", s[0] & 0xFF);
00211     strecpy(fios->title, fios->name, lastof(fios->title));
00212     while (*s++ != '\0') { /* Nothing */ }
00213   }
00214 #endif
00215 }
00216 
00217 bool FiosIsValidFile(const char *path, const struct dirent *ent, struct stat *sb)
00218 {
00219   /* hectonanoseconds between Windows and POSIX epoch */
00220   static const int64 posix_epoch_hns = 0x019DB1DED53E8000LL;
00221   const WIN32_FIND_DATA *fd = &ent->dir->fd;
00222 
00223   sb->st_size  = ((uint64) fd->nFileSizeHigh << 32) + fd->nFileSizeLow;
00224   /* UTC FILETIME to seconds-since-1970 UTC
00225    * we just have to subtract POSIX epoch and scale down to units of seconds.
00226    * http://www.gamedev.net/community/forums/topic.asp?topic_id=294070&whichpage=1&#1860504
00227    * XXX - not entirely correct, since filetimes on FAT aren't UTC but local,
00228    * this won't entirely be correct, but we use the time only for comparsion. */
00229   sb->st_mtime = (time_t)((*(uint64*)&fd->ftLastWriteTime - posix_epoch_hns) / 1E7);
00230   sb->st_mode  = (fd->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)? S_IFDIR : S_IFREG;
00231 
00232   return true;
00233 }
00234 
00235 bool FiosIsHiddenFile(const struct dirent *ent)
00236 {
00237   return (ent->dir->fd.dwFileAttributes & (FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM)) != 0;
00238 }
00239 
00240 bool FiosGetDiskFreeSpace(const char *path, uint64 *tot)
00241 {
00242   UINT sem = SetErrorMode(SEM_FAILCRITICALERRORS);  // disable 'no-disk' message box
00243   bool retval = false;
00244   TCHAR root[4];
00245   DWORD spc, bps, nfc, tnc;
00246 
00247   _sntprintf(root, lengthof(root), _T("%c:") _T(PATHSEP), path[0]);
00248   if (tot != NULL && GetDiskFreeSpace(root, &spc, &bps, &nfc, &tnc)) {
00249     *tot = ((spc * bps) * (uint64)nfc);
00250     retval = true;
00251   }
00252 
00253   SetErrorMode(sem); // reset previous setting
00254   return retval;
00255 }
00256 
00257 static int ParseCommandLine(char *line, char **argv, int max_argc)
00258 {
00259   int n = 0;
00260 
00261   do {
00262     /* skip whitespace */
00263     while (*line == ' ' || *line == '\t') line++;
00264 
00265     /* end? */
00266     if (*line == '\0') break;
00267 
00268     /* special handling when quoted */
00269     if (*line == '"') {
00270       argv[n++] = ++line;
00271       while (*line != '"') {
00272         if (*line == '\0') return n;
00273         line++;
00274       }
00275     } else {
00276       argv[n++] = line;
00277       while (*line != ' ' && *line != '\t') {
00278         if (*line == '\0') return n;
00279         line++;
00280       }
00281     }
00282     *line++ = '\0';
00283   } while (n != max_argc);
00284 
00285   return n;
00286 }
00287 
00288 void CreateConsole()
00289 {
00290 #if defined(WINCE)
00291   /* WinCE doesn't support console stuff */
00292 #else
00293   HANDLE hand;
00294   CONSOLE_SCREEN_BUFFER_INFO coninfo;
00295 
00296   if (_has_console) return;
00297   _has_console = true;
00298 
00299   AllocConsole();
00300 
00301   hand = GetStdHandle(STD_OUTPUT_HANDLE);
00302   GetConsoleScreenBufferInfo(hand, &coninfo);
00303   coninfo.dwSize.Y = 500;
00304   SetConsoleScreenBufferSize(hand, coninfo.dwSize);
00305 
00306   /* redirect unbuffered STDIN, STDOUT, STDERR to the console */
00307 #if !defined(__CYGWIN__)
00308 
00309   /* Check if we can open a handle to STDOUT. */
00310   int fd = _open_osfhandle((intptr_t)hand, _O_TEXT);
00311   if (fd == -1) {
00312     /* Free everything related to the console. */
00313     FreeConsole();
00314     _has_console = false;
00315     _close(fd);
00316     CloseHandle(hand);
00317 
00318     ShowInfo("Unable to open an output handle to the console. Check known-bugs.txt for details.");
00319     return;
00320   }
00321 
00322   *stdout = *_fdopen(fd, "w");
00323   *stdin = *_fdopen(_open_osfhandle((intptr_t)GetStdHandle(STD_INPUT_HANDLE), _O_TEXT), "r" );
00324   *stderr = *_fdopen(_open_osfhandle((intptr_t)GetStdHandle(STD_ERROR_HANDLE), _O_TEXT), "w" );
00325 #else
00326   /* open_osfhandle is not in cygwin */
00327   *stdout = *fdopen(1, "w" );
00328   *stdin = *fdopen(0, "r" );
00329   *stderr = *fdopen(2, "w" );
00330 #endif
00331 
00332   setvbuf(stdin, NULL, _IONBF, 0);
00333   setvbuf(stdout, NULL, _IONBF, 0);
00334   setvbuf(stderr, NULL, _IONBF, 0);
00335 #endif
00336 }
00337 
00339 static const char *_help_msg;
00340 
00342 static INT_PTR CALLBACK HelpDialogFunc(HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam)
00343 {
00344   switch (msg) {
00345     case WM_INITDIALOG: {
00346       char help_msg[8192];
00347       const char *p = _help_msg;
00348       char *q = help_msg;
00349       while (q != lastof(help_msg) && *p != '\0') {
00350         if (*p == '\n') {
00351           *q++ = '\r';
00352           if (q == lastof(help_msg)) {
00353             q[-1] = '\0';
00354             break;
00355           }
00356         }
00357         *q++ = *p++;
00358       }
00359       *q = '\0';
00360 #if defined(UNICODE)
00361       /* We need to put the text in a seperate buffer because the default
00362        * buffer in MB_TO_WIDE might not be large enough (512 chars) */
00363       wchar_t help_msgW[8192];
00364 #endif
00365       SetDlgItemText(wnd, 11, MB_TO_WIDE_BUFFER(help_msg, help_msgW, lengthof(help_msgW)));
00366       SendDlgItemMessage(wnd, 11, WM_SETFONT, (WPARAM)GetStockObject(ANSI_FIXED_FONT), FALSE);
00367     } return TRUE;
00368 
00369     case WM_COMMAND:
00370       if (wParam == 12) ExitProcess(0);
00371       return TRUE;
00372     case WM_CLOSE:
00373       ExitProcess(0);
00374   }
00375 
00376   return FALSE;
00377 }
00378 
00379 void ShowInfo(const char *str)
00380 {
00381   if (_has_console) {
00382     fprintf(stderr, "%s\n", str);
00383   } else {
00384     bool old;
00385     ReleaseCapture();
00386     _left_button_clicked = _left_button_down = false;
00387 
00388     old = MyShowCursor(true);
00389     if (strlen(str) > 2048) {
00390       /* The minimum length of the help message is 2048. Other messages sent via
00391        * ShowInfo are much shorter, or so long they need this way of displaying
00392        * them anyway. */
00393       _help_msg = str;
00394       DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(101), NULL, HelpDialogFunc);
00395     } else {
00396 #if defined(UNICODE)
00397       /* We need to put the text in a seperate buffer because the default
00398        * buffer in MB_TO_WIDE might not be large enough (512 chars) */
00399       wchar_t help_msgW[8192];
00400 #endif
00401       MessageBox(GetActiveWindow(), MB_TO_WIDE_BUFFER(str, help_msgW, lengthof(help_msgW)), _T("OpenTTD"), MB_ICONINFORMATION | MB_OK);
00402     }
00403     MyShowCursor(old);
00404   }
00405 }
00406 
00407 #if defined(WINCE)
00408 int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
00409 #else
00410 int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
00411 #endif
00412 {
00413   int argc;
00414   char *argv[64]; // max 64 command line arguments
00415   char *cmdline;
00416 
00417 #if !defined(UNICODE)
00418   _codepage = GetACP(); // get system codepage as some kind of a default
00419 #endif /* UNICODE */
00420 
00421   CrashLog::InitialiseCrashLog();
00422 
00423 #if defined(UNICODE)
00424 
00425 #if !defined(WINCE)
00426   /* Check if a win9x user started the win32 version */
00427   if (HasBit(GetVersion(), 31)) usererror("This version of OpenTTD doesn't run on windows 95/98/ME.\nPlease download the win9x binary and try again.");
00428 #endif
00429 
00430   /* For UNICODE we need to convert the commandline to char* _AND_
00431    * save it because argv[] points into this buffer and thus needs to
00432    * be available between subsequent calls to FS2OTTD() */
00433   char cmdlinebuf[MAX_PATH];
00434 #endif /* UNICODE */
00435 
00436   cmdline = WIDE_TO_MB_BUFFER(GetCommandLine(), cmdlinebuf, lengthof(cmdlinebuf));
00437 
00438 #if defined(_DEBUG)
00439   CreateConsole();
00440 #endif
00441 
00442 #if !defined(WINCE)
00443   _set_error_mode(_OUT_TO_MSGBOX); // force assertion output to messagebox
00444 #endif
00445 
00446   /* setup random seed to something quite random */
00447   SetRandomSeed(GetTickCount());
00448 
00449   argc = ParseCommandLine(cmdline, argv, lengthof(argv));
00450 
00451   ttd_main(argc, argv);
00452   return 0;
00453 }
00454 
00455 #if defined(WINCE)
00456 void GetCurrentDirectoryW(int length, wchar_t *path)
00457 {
00458   /* Get the name of this module */
00459   GetModuleFileName(NULL, path, length);
00460 
00461   /* Remove the executable name, this we call CurrentDir */
00462   wchar_t *pDest = wcsrchr(path, '\\');
00463   if (pDest != NULL) {
00464     int result = pDest - path + 1;
00465     path[result] = '\0';
00466   }
00467 }
00468 #endif
00469 
00470 char *getcwd(char *buf, size_t size)
00471 {
00472 #if defined(WINCE)
00473   TCHAR path[MAX_PATH];
00474   GetModuleFileName(NULL, path, MAX_PATH);
00475   convert_from_fs(path, buf, size);
00476   /* GetModuleFileName returns dir with file, so remove everything behind latest '\\' */
00477   char *p = strrchr(buf, '\\');
00478   if (p != NULL) *p = '\0';
00479 #elif defined(UNICODE)
00480   TCHAR path[MAX_PATH];
00481   GetCurrentDirectory(MAX_PATH - 1, path);
00482   convert_from_fs(path, buf, size);
00483 #else
00484   GetCurrentDirectory(size, buf);
00485 #endif
00486   return buf;
00487 }
00488 
00489 
00490 void DetermineBasePaths(const char *exe)
00491 {
00492   char tmp[MAX_PATH];
00493   TCHAR path[MAX_PATH];
00494 #ifdef WITH_PERSONAL_DIR
00495   SHGetFolderPath(NULL, CSIDL_PERSONAL, NULL, SHGFP_TYPE_CURRENT, path);
00496   strecpy(tmp, WIDE_TO_MB_BUFFER(path, tmp, lengthof(tmp)), lastof(tmp));
00497   AppendPathSeparator(tmp, MAX_PATH);
00498   ttd_strlcat(tmp, PERSONAL_DIR, MAX_PATH);
00499   AppendPathSeparator(tmp, MAX_PATH);
00500   _searchpaths[SP_PERSONAL_DIR] = strdup(tmp);
00501 
00502   SHGetFolderPath(NULL, CSIDL_COMMON_DOCUMENTS, NULL, SHGFP_TYPE_CURRENT, path);
00503   strecpy(tmp, WIDE_TO_MB_BUFFER(path, tmp, lengthof(tmp)), lastof(tmp));
00504   AppendPathSeparator(tmp, MAX_PATH);
00505   ttd_strlcat(tmp, PERSONAL_DIR, MAX_PATH);
00506   AppendPathSeparator(tmp, MAX_PATH);
00507   _searchpaths[SP_SHARED_DIR] = strdup(tmp);
00508 #else
00509   _searchpaths[SP_PERSONAL_DIR] = NULL;
00510   _searchpaths[SP_SHARED_DIR]   = NULL;
00511 #endif
00512 
00513   /* Get the path to working directory of OpenTTD */
00514   getcwd(tmp, lengthof(tmp));
00515   AppendPathSeparator(tmp, MAX_PATH);
00516   _searchpaths[SP_WORKING_DIR] = strdup(tmp);
00517 
00518   if (!GetModuleFileName(NULL, path, lengthof(path))) {
00519     DEBUG(misc, 0, "GetModuleFileName failed (%lu)\n", GetLastError());
00520     _searchpaths[SP_BINARY_DIR] = NULL;
00521   } else {
00522     TCHAR exec_dir[MAX_PATH];
00523     _tcsncpy(path, MB_TO_WIDE_BUFFER(exe, path, lengthof(path)), lengthof(path));
00524     if (!GetFullPathName(path, lengthof(exec_dir), exec_dir, NULL)) {
00525       DEBUG(misc, 0, "GetFullPathName failed (%lu)\n", GetLastError());
00526       _searchpaths[SP_BINARY_DIR] = NULL;
00527     } else {
00528       strecpy(tmp, WIDE_TO_MB_BUFFER(exec_dir, tmp, lengthof(tmp)), lastof(tmp));
00529       char *s = strrchr(tmp, PATHSEPCHAR);
00530       *(s + 1) = '\0';
00531       _searchpaths[SP_BINARY_DIR] = strdup(tmp);
00532     }
00533   }
00534 
00535   _searchpaths[SP_INSTALLATION_DIR]       = NULL;
00536   _searchpaths[SP_APPLICATION_BUNDLE_DIR] = NULL;
00537 }
00538 
00539 
00540 bool GetClipboardContents(char *buffer, size_t buff_len)
00541 {
00542   HGLOBAL cbuf;
00543   const char *ptr;
00544 
00545   if (IsClipboardFormatAvailable(CF_UNICODETEXT)) {
00546     OpenClipboard(NULL);
00547     cbuf = GetClipboardData(CF_UNICODETEXT);
00548 
00549     ptr = (const char*)GlobalLock(cbuf);
00550     const char *ret = convert_from_fs((wchar_t*)ptr, buffer, buff_len);
00551     GlobalUnlock(cbuf);
00552     CloseClipboard();
00553 
00554     if (*ret == '\0') return false;
00555 #if !defined(UNICODE)
00556   } else if (IsClipboardFormatAvailable(CF_TEXT)) {
00557     OpenClipboard(NULL);
00558     cbuf = GetClipboardData(CF_TEXT);
00559 
00560     ptr = (const char*)GlobalLock(cbuf);
00561     ttd_strlcpy(buffer, FS2OTTD(ptr), buff_len);
00562 
00563     GlobalUnlock(cbuf);
00564     CloseClipboard();
00565 #endif /* UNICODE */
00566   } else {
00567     return false;
00568   }
00569 
00570   return true;
00571 }
00572 
00573 
00574 void CSleep(int milliseconds)
00575 {
00576   Sleep(milliseconds);
00577 }
00578 
00579 
00593 const char *FS2OTTD(const TCHAR *name)
00594 {
00595   static char utf8_buf[512];
00596 #if defined(UNICODE)
00597   return convert_from_fs(name, utf8_buf, lengthof(utf8_buf));
00598 #else
00599   char *s = utf8_buf;
00600 
00601   for (; *name != '\0'; name++) {
00602     wchar_t w;
00603     int len = MultiByteToWideChar(_codepage, 0, name, 1, &w, 1);
00604     if (len != 1) {
00605       DEBUG(misc, 0, "[utf8] M2W error converting '%c'. Errno %lu", *name, GetLastError());
00606       continue;
00607     }
00608 
00609     if (s + Utf8CharLen(w) >= lastof(utf8_buf)) break;
00610     s += Utf8Encode(s, w);
00611   }
00612 
00613   *s = '\0';
00614   return utf8_buf;
00615 #endif /* UNICODE */
00616 }
00617 
00631 const TCHAR *OTTD2FS(const char *name)
00632 {
00633   static TCHAR system_buf[512];
00634 #if defined(UNICODE)
00635   return convert_to_fs(name, system_buf, lengthof(system_buf));
00636 #else
00637   char *s = system_buf;
00638 
00639   for (WChar c; (c = Utf8Consume(&name)) != '\0';) {
00640     if (s >= lastof(system_buf)) break;
00641 
00642     char mb;
00643     int len = WideCharToMultiByte(_codepage, 0, (wchar_t*)&c, 1, &mb, 1, NULL, NULL);
00644     if (len != 1) {
00645       DEBUG(misc, 0, "[utf8] W2M error converting '0x%X'. Errno %lu", c, GetLastError());
00646       continue;
00647     }
00648 
00649     *s++ = mb;
00650   }
00651 
00652   *s = '\0';
00653   return system_buf;
00654 #endif /* UNICODE */
00655 }
00656 
00657 
00666 char *convert_from_fs(const wchar_t *name, char *utf8_buf, size_t buflen)
00667 {
00668   int len = WideCharToMultiByte(CP_UTF8, 0, name, -1, utf8_buf, (int)buflen, NULL, NULL);
00669   if (len == 0) {
00670     DEBUG(misc, 0, "[utf8] W2M error converting wide-string. Errno %lu", GetLastError());
00671     utf8_buf[0] = '\0';
00672   }
00673 
00674   return utf8_buf;
00675 }
00676 
00677 
00687 wchar_t *convert_to_fs(const char *name, wchar_t *utf16_buf, size_t buflen)
00688 {
00689   int len = MultiByteToWideChar(CP_UTF8, 0, name, -1, utf16_buf, (int)buflen);
00690   if (len == 0) {
00691     DEBUG(misc, 0, "[utf8] M2W error converting '%s'. Errno %lu", name, GetLastError());
00692     utf16_buf[0] = '\0';
00693   }
00694 
00695   return utf16_buf;
00696 }
00697 
00704 HRESULT OTTDSHGetFolderPath(HWND hwnd, int csidl, HANDLE hToken, DWORD dwFlags, LPTSTR pszPath)
00705 {
00706   static HRESULT (WINAPI *SHGetFolderPath)(HWND, int, HANDLE, DWORD, LPTSTR) = NULL;
00707   static bool first_time = true;
00708 
00709   /* We only try to load the library one time; if it fails, it fails */
00710   if (first_time) {
00711 #if defined(UNICODE)
00712 # define W(x) x "W"
00713 #else
00714 # define W(x) x "A"
00715 #endif
00716     if (!LoadLibraryList((Function*)&SHGetFolderPath, "SHFolder.dll\0" W("SHGetFolderPath") "\0\0")) {
00717       DEBUG(misc, 0, "Unable to load " W("SHGetFolderPath") "from SHFolder.dll");
00718     }
00719 #undef W
00720     first_time = false;
00721   }
00722 
00723   if (SHGetFolderPath != NULL) return SHGetFolderPath(hwnd, csidl, hToken, dwFlags, pszPath);
00724 
00725   /* SHGetFolderPath doesn't exist, try a more conservative approach,
00726    * eg environment variables. This is only included for legacy modes
00727    * MSDN says: that 'pszPath' is a "Pointer to a null-terminated string of
00728    * length MAX_PATH which will receive the path" so let's assume that
00729    * Windows 95 with Internet Explorer 5.0, Windows 98 with Internet Explorer 5.0,
00730    * Windows 98 Second Edition (SE), Windows NT 4.0 with Internet Explorer 5.0,
00731    * Windows NT 4.0 with Service Pack 4 (SP4) */
00732   {
00733     DWORD ret;
00734     switch (csidl) {
00735       case CSIDL_FONTS: // Get the system font path, eg %WINDIR%\Fonts
00736         ret = GetEnvironmentVariable(_T("WINDIR"), pszPath, MAX_PATH);
00737         if (ret == 0) break;
00738         _tcsncat(pszPath, _T("\\Fonts"), MAX_PATH);
00739 
00740         return (HRESULT)0;
00741 
00742       /* XXX - other types to go here when needed... */
00743     }
00744   }
00745 
00746   return E_INVALIDARG;
00747 }
00748 
00750 const char *GetCurrentLocale(const char *)
00751 {
00752   char lang[9], country[9];
00753   if (GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_SISO639LANGNAME, lang, lengthof(lang)) == 0 ||
00754       GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_SISO3166CTRYNAME, country, lengthof(country)) == 0) {
00755     /* Unable to retrieve the locale. */
00756     return NULL;
00757   }
00758   /* Format it as 'en_us'. */
00759   static char retbuf[6] = {lang[0], lang[1], '_', country[0], country[1], 0};
00760   return retbuf;
00761 }
00762 
00763 uint GetCPUCoreCount()
00764 {
00765   SYSTEM_INFO info;
00766 
00767   GetSystemInfo(&info);
00768   return info.dwNumberOfProcessors;
00769 }