unix.cpp

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00001 /* $Id: unix.cpp 23490 2011-12-11 11:47:08Z yexo $ */
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 "../../textbuf_gui.h"
00014 #include "../../openttd.h"
00015 #include "../../crashlog.h"
00016 #include "../../core/random_func.hpp"
00017 #include "../../debug.h"
00018 
00019 
00020 #include <dirent.h>
00021 #include <unistd.h>
00022 #include <sys/stat.h>
00023 #include <time.h>
00024 #include <signal.h>
00025 
00026 #ifdef __APPLE__
00027   #include <sys/mount.h>
00028 #elif (defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L) || defined(__GLIBC__)
00029   #define HAS_STATVFS
00030 #endif
00031 
00032 #if defined(OPENBSD) || defined(__NetBSD__) || defined(__FreeBSD__)
00033   #define HAS_SYSCTL
00034 #endif
00035 
00036 #ifdef HAS_STATVFS
00037 #include <sys/statvfs.h>
00038 #endif
00039 
00040 #ifdef HAS_SYSCTL
00041 #include <sys/sysctl.h>
00042 #endif
00043 
00044 
00045 #ifdef __MORPHOS__
00046 #include <exec/types.h>
00047 ULONG __stack = (1024*1024)*2; // maybe not that much is needed actually ;)
00048 
00049 /* The system supplied definition of SIG_IGN does not match */
00050 #undef SIG_IGN
00051 #define SIG_IGN (void (*)(int))1
00052 #endif /* __MORPHOS__ */
00053 
00054 #ifdef __AMIGA__
00055 #warning add stack symbol to avoid that user needs to set stack manually (tokai)
00056 // ULONG __stack =
00057 #endif
00058 
00059 #if defined(__APPLE__)
00060   #if defined(WITH_SDL)
00061     /* the mac implementation needs this file included in the same file as main() */
00062     #include <SDL.h>
00063   #endif
00064 #endif
00065 
00066 bool FiosIsRoot(const char *path)
00067 {
00068 #if !defined(__MORPHOS__) && !defined(__AMIGAOS__)
00069   return path[1] == '\0';
00070 #else
00071   /* On MorphOS or AmigaOS paths look like: "Volume:directory/subdirectory" */
00072   const char *s = strchr(path, ':');
00073   return s != NULL && s[1] == '\0';
00074 #endif
00075 }
00076 
00077 void FiosGetDrives()
00078 {
00079   return;
00080 }
00081 
00082 bool FiosGetDiskFreeSpace(const char *path, uint64 *tot)
00083 {
00084   uint64 free = 0;
00085 
00086 #ifdef __APPLE__
00087   struct statfs s;
00088 
00089   if (statfs(path, &s) != 0) return false;
00090   free = (uint64)s.f_bsize * s.f_bavail;
00091 #elif defined(HAS_STATVFS)
00092   struct statvfs s;
00093 
00094   if (statvfs(path, &s) != 0) return false;
00095   free = (uint64)s.f_frsize * s.f_bavail;
00096 #endif
00097   if (tot != NULL) *tot = free;
00098   return true;
00099 }
00100 
00101 bool FiosIsValidFile(const char *path, const struct dirent *ent, struct stat *sb)
00102 {
00103   char filename[MAX_PATH];
00104   int res;
00105 #if defined(__MORPHOS__) || defined(__AMIGAOS__)
00106   /* On MorphOS or AmigaOS paths look like: "Volume:directory/subdirectory" */
00107   if (FiosIsRoot(path)) {
00108     res = snprintf(filename, lengthof(filename), "%s:%s", path, ent->d_name);
00109   } else // XXX - only next line!
00110 #else
00111   assert(path[strlen(path) - 1] == PATHSEPCHAR);
00112   if (strlen(path) > 2) assert(path[strlen(path) - 2] != PATHSEPCHAR);
00113 #endif
00114   res = snprintf(filename, lengthof(filename), "%s%s", path, ent->d_name);
00115 
00116   /* Could we fully concatenate the path and filename? */
00117   if (res >= (int)lengthof(filename) || res < 0) return false;
00118 
00119   return stat(filename, sb) == 0;
00120 }
00121 
00122 bool FiosIsHiddenFile(const struct dirent *ent)
00123 {
00124   return ent->d_name[0] == '.';
00125 }
00126 
00127 #ifdef WITH_ICONV
00128 
00129 #include <iconv.h>
00130 #include <errno.h>
00131 #include "../../debug.h"
00132 #include "../../string_func.h"
00133 
00134 const char *GetCurrentLocale(const char *param);
00135 
00136 #define INTERNALCODE "UTF-8"
00137 
00143 static const char *GetLocalCode()
00144 {
00145 #if defined(__APPLE__)
00146   return "UTF-8-MAC";
00147 #else
00148   /* Strip locale (eg en_US.UTF-8) to only have UTF-8 */
00149   const char *locale = GetCurrentLocale("LC_CTYPE");
00150   if (locale != NULL) locale = strchr(locale, '.');
00151 
00152   return (locale == NULL) ? "" : locale + 1;
00153 #endif
00154 }
00155 
00160 static const char *convert_tofrom_fs(iconv_t convd, const char *name)
00161 {
00162   static char buf[1024];
00163   /* There are different implementations of iconv. The older ones,
00164    * e.g. SUSv2, pass a const pointer, whereas the newer ones, e.g.
00165    * IEEE 1003.1 (2004), pass a non-const pointer. */
00166 #ifdef HAVE_NON_CONST_ICONV
00167   char *inbuf = const_cast<char*>(name);
00168 #else
00169   const char *inbuf = name;
00170 #endif
00171 
00172   char *outbuf  = buf;
00173   size_t outlen = sizeof(buf) - 1;
00174   size_t inlen  = strlen(name);
00175 
00176   strecpy(outbuf, name, outbuf + outlen);
00177 
00178   iconv(convd, NULL, NULL, NULL, NULL);
00179   if (iconv(convd, &inbuf, &inlen, &outbuf, &outlen) == (size_t)(-1)) {
00180     DEBUG(misc, 0, "[iconv] error converting '%s'. Errno %d", name, errno);
00181   }
00182 
00183   *outbuf = '\0';
00184   /* FIX: invalid characters will abort conversion, but they shouldn't occur? */
00185   return buf;
00186 }
00187 
00193 const char *OTTD2FS(const char *name)
00194 {
00195   static iconv_t convd = (iconv_t)(-1);
00196 
00197   if (convd == (iconv_t)(-1)) {
00198     const char *env = GetLocalCode();
00199     convd = iconv_open(env, INTERNALCODE);
00200     if (convd == (iconv_t)(-1)) {
00201       DEBUG(misc, 0, "[iconv] conversion from codeset '%s' to '%s' unsupported", INTERNALCODE, env);
00202       return name;
00203     }
00204   }
00205 
00206   return convert_tofrom_fs(convd, name);
00207 }
00208 
00214 const char *FS2OTTD(const char *name)
00215 {
00216   static iconv_t convd = (iconv_t)(-1);
00217 
00218   if (convd == (iconv_t)(-1)) {
00219     const char *env = GetLocalCode();
00220     convd = iconv_open(INTERNALCODE, env);
00221     if (convd == (iconv_t)(-1)) {
00222       DEBUG(misc, 0, "[iconv] conversion from codeset '%s' to '%s' unsupported", env, INTERNALCODE);
00223       return name;
00224     }
00225   }
00226 
00227   return convert_tofrom_fs(convd, name);
00228 }
00229 
00230 #else
00231 const char *FS2OTTD(const char *name) {return name;}
00232 const char *OTTD2FS(const char *name) {return name;}
00233 #endif /* WITH_ICONV */
00234 
00235 void ShowInfo(const char *str)
00236 {
00237   fprintf(stderr, "%s\n", str);
00238 }
00239 
00240 #if !defined(__APPLE__)
00241 void ShowOSErrorBox(const char *buf, bool system)
00242 {
00243   /* All unix systems, except OSX. Only use escape codes on a TTY. */
00244   if (isatty(fileno(stderr))) {
00245     fprintf(stderr, "\033[1;31mError: %s\033[0;39m\n", buf);
00246   } else {
00247     fprintf(stderr, "Error: %s\n", buf);
00248   }
00249 }
00250 #endif
00251 
00252 #ifdef WITH_COCOA
00253 void cocoaSetupAutoreleasePool();
00254 void cocoaReleaseAutoreleasePool();
00255 #endif
00256 
00257 int CDECL main(int argc, char *argv[])
00258 {
00259   int ret;
00260 
00261 #ifdef WITH_COCOA
00262   cocoaSetupAutoreleasePool();
00263   /* This is passed if we are launched by double-clicking */
00264   if (argc >= 2 && strncmp(argv[1], "-psn", 4) == 0) {
00265     argv[1] = NULL;
00266     argc = 1;
00267   }
00268 #endif
00269   CrashLog::InitialiseCrashLog();
00270 
00271   SetRandomSeed(time(NULL));
00272 
00273   signal(SIGPIPE, SIG_IGN);
00274 
00275   ret = ttd_main(argc, argv);
00276 
00277 #ifdef WITH_COCOA
00278   cocoaReleaseAutoreleasePool();
00279 #endif
00280 
00281   return ret;
00282 }
00283 
00284 #ifndef WITH_COCOA
00285 bool GetClipboardContents(char *buffer, size_t buff_len)
00286 {
00287   return false;
00288 }
00289 #endif
00290 
00291 
00292 /* multi os compatible sleep function */
00293 
00294 #ifdef __AMIGA__
00295 /* usleep() implementation */
00296 # include <devices/timer.h>
00297 # include <dos/dos.h>
00298 
00299   extern struct Device      *TimerBase    = NULL;
00300   extern struct MsgPort     *TimerPort    = NULL;
00301   extern struct timerequest *TimerRequest = NULL;
00302 #endif /* __AMIGA__ */
00303 
00304 void CSleep(int milliseconds)
00305 {
00306   #if defined(PSP)
00307     sceKernelDelayThread(milliseconds * 1000);
00308   #elif defined(__BEOS__)
00309     snooze(milliseconds * 1000);
00310   #elif defined(__AMIGA__)
00311   {
00312     ULONG signals;
00313     ULONG TimerSigBit = 1 << TimerPort->mp_SigBit;
00314 
00315     /* send IORequest */
00316     TimerRequest->tr_node.io_Command = TR_ADDREQUEST;
00317     TimerRequest->tr_time.tv_secs    = (milliseconds * 1000) / 1000000;
00318     TimerRequest->tr_time.tv_micro   = (milliseconds * 1000) % 1000000;
00319     SendIO((struct IORequest *)TimerRequest);
00320 
00321     if (!((signals = Wait(TimerSigBit | SIGBREAKF_CTRL_C)) & TimerSigBit) ) {
00322       AbortIO((struct IORequest *)TimerRequest);
00323     }
00324     WaitIO((struct IORequest *)TimerRequest);
00325   }
00326   #else
00327     usleep(milliseconds * 1000);
00328   #endif
00329 }
00330 
00331 
00332 #ifndef __APPLE__
00333 uint GetCPUCoreCount()
00334 {
00335   uint count = 1;
00336 #ifdef HAS_SYSCTL
00337   int ncpu = 0;
00338   size_t len = sizeof(ncpu);
00339 
00340   if (sysctlbyname("hw.availcpu", &ncpu, &len, NULL, 0) < 0) {
00341     sysctlbyname("hw.ncpu", &ncpu, &len, NULL, 0);
00342   }
00343 
00344   if (ncpu > 0) count = ncpu;
00345 #elif defined(_SC_NPROCESSORS_ONLN)
00346   long res = sysconf(_SC_NPROCESSORS_ONLN);
00347   if (res > 0) count = res;
00348 #endif
00349 
00350   return count;
00351 }
00352 
00353 void OSOpenBrowser(const char *url)
00354 {
00355   pid_t child_pid = fork();
00356   if (child_pid != 0) return;
00357 
00358   const char *args[3];
00359   args[0] = "/usr/bin/xdg-open";
00360   args[1] = url;
00361   args[2] = NULL;
00362   execv(args[0], const_cast<char * const *>(args));
00363   DEBUG(misc, 0, "Failed to open url: %s", url);
00364   exit(0);
00365 }
00366 #endif