369 lines
8.8 KiB
C++
369 lines
8.8 KiB
C++
/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file unix.cpp Implementation of Unix specific file handling. */
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#include "../../stdafx.h"
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#include "../../textbuf_gui.h"
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#include "../../openttd.h"
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#include "../../crashlog.h"
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#include "../../core/random_func.hpp"
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#include "../../debug.h"
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#include "../../string_func.h"
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#include "../../fios.h"
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#include "../../thread.h"
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#include <dirent.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <time.h>
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#include <signal.h>
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#include <pthread.h>
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#include <atomic>
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#ifdef WITH_SDL2
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#include <SDL.h>
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#endif
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#ifdef __EMSCRIPTEN__
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# include <emscripten.h>
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#endif
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#ifdef __APPLE__
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# include <sys/mount.h>
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#elif (defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L) || defined(__GLIBC__)
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# define HAS_STATVFS
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#endif
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#if defined(OPENBSD) || defined(__NetBSD__) || defined(__FreeBSD__)
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# define HAS_SYSCTL
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#endif
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#ifdef HAS_STATVFS
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#include <sys/statvfs.h>
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#endif
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#ifdef HAS_SYSCTL
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#include <sys/sysctl.h>
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#endif
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#if defined(__APPLE__)
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# include "../macosx/macos.h"
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#endif
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#include "../../safeguards.h"
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bool FiosIsRoot(const char *path)
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{
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return path[1] == '\0';
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}
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void FiosGetDrives(FileList &)
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{
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return;
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}
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std::optional<uint64_t> FiosGetDiskFreeSpace(const std::string &path)
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{
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#ifdef __APPLE__
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struct statfs s;
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if (statfs(path.c_str(), &s) == 0) return static_cast<uint64_t>(s.f_bsize) * s.f_bavail;
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#elif defined(HAS_STATVFS)
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struct statvfs s;
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if (statvfs(path.c_str(), &s) == 0) return static_cast<uint64_t>(s.f_frsize) * s.f_bavail;
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#endif
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return std::nullopt;
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}
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bool FiosIsValidFile(const char *path, const struct dirent *ent, struct stat *sb)
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{
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char filename[MAX_PATH];
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int res;
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assert(path[strlen(path) - 1] == PATHSEPCHAR);
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if (strlen(path) > 2) assert(path[strlen(path) - 2] != PATHSEPCHAR);
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res = seprintf(filename, lastof(filename), "%s%s", path, ent->d_name);
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/* Could we fully concatenate the path and filename? */
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if (res >= (int)lengthof(filename) || res < 0) return false;
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return stat(filename, sb) == 0;
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}
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bool FiosIsHiddenFile(const struct dirent *ent)
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{
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return ent->d_name[0] == '.';
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}
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#ifdef WITH_ICONV
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#include <iconv.h>
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#include <errno.h>
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#include "../../debug.h"
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#include "../../string_func.h"
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const char *GetCurrentLocale(const char *param);
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#define INTERNALCODE "UTF-8"
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/**
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* Try and try to decipher the current locale from environmental
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* variables. MacOSX is hardcoded, other OS's are dynamic. If no suitable
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* locale can be found, don't do any conversion ""
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*/
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static const char *GetLocalCode()
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{
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#if defined(__APPLE__)
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return "UTF-8-MAC";
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#else
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/* Strip locale (eg en_US.UTF-8) to only have UTF-8 */
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const char *locale = GetCurrentLocale("LC_CTYPE");
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if (locale != nullptr) locale = strchr(locale, '.');
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return (locale == nullptr) ? "" : locale + 1;
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#endif
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}
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/**
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* Convert between locales, which from and which to is set in the calling
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* functions OTTD2FS() and FS2OTTD().
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*/
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static std::string convert_tofrom_fs(iconv_t convd, const std::string &name)
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{
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/* There are different implementations of iconv. The older ones,
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* e.g. SUSv2, pass a const pointer, whereas the newer ones, e.g.
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* IEEE 1003.1 (2004), pass a non-const pointer. */
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#ifdef HAVE_NON_CONST_ICONV
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char *inbuf = const_cast<char*>(name.data());
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#else
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const char *inbuf = name.data();
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#endif
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/* If the output is UTF-32, then 1 ASCII character becomes 4 bytes. */
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size_t inlen = name.size();
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std::string buf(inlen * 4, '\0');
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size_t outlen = buf.size();
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char *outbuf = buf.data();
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iconv(convd, nullptr, nullptr, nullptr, nullptr);
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if (iconv(convd, &inbuf, &inlen, &outbuf, &outlen) == (size_t)(-1)) {
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DEBUG(misc, 0, "[iconv] error converting '%s'. Errno %d", name.c_str(), errno);
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return name;
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}
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buf.resize(outbuf - buf.data());
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return buf;
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}
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std::mutex _iconv_convd_mutex;
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/**
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* Convert from OpenTTD's encoding to that of the local environment
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* @param name pointer to a valid string that will be converted
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* @return pointer to a new stringbuffer that contains the converted string
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*/
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std::string OTTD2FS(const std::string &name)
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{
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static std::atomic<iconv_t> convd{(iconv_t)(-1)};
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iconv_t local_convd = convd.load(std::memory_order_relaxed);
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if (local_convd == (iconv_t)(-1)) {
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{
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std::unique_lock<std::mutex> lock(_iconv_convd_mutex);
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local_convd = convd.load(); // Load a second time now that the lock is acquired
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if (local_convd == (iconv_t)(-1)) {
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const char *env = GetLocalCode();
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local_convd = iconv_open(env, INTERNALCODE);
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if (local_convd != (iconv_t)(-1)) convd.store(local_convd);
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}
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}
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if (local_convd == (iconv_t)(-1)) {
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DEBUG(misc, 0, "[iconv] conversion from codeset '%s' to '%s' unsupported", INTERNALCODE, env);
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return name;
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}
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}
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return convert_tofrom_fs(local_convd, name);
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}
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/**
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* Convert to OpenTTD's encoding from that of the local environment
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* @param name valid string that will be converted
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* @return pointer to a new stringbuffer that contains the converted string
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*/
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std::string FS2OTTD(const std::string &name)
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{
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static std::atomic<iconv_t> convd{(iconv_t)(-1)};
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iconv_t local_convd = convd.load(std::memory_order_relaxed);
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if (local_convd == (iconv_t)(-1)) {
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{
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std::unique_lock<std::mutex> lock(_iconv_convd_mutex);
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local_convd = convd.load(); // Load a second time now that the lock is acquired
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if (local_convd == (iconv_t)(-1)) {
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const char *env = GetLocalCode();
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local_convd = iconv_open(INTERNALCODE, env);
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if (local_convd != (iconv_t)(-1)) convd.store(local_convd);
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}
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}
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if (local_convd == (iconv_t)(-1)) {
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DEBUG(misc, 0, "[iconv] conversion from codeset '%s' to '%s' unsupported", env, INTERNALCODE);
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return name;
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}
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}
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return convert_tofrom_fs(local_convd, name);
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}
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#endif /* WITH_ICONV */
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void ShowInfoI(const char *str)
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{
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fprintf(stderr, "%s\n", str);
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}
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#if !defined(__APPLE__)
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void ShowOSErrorBox(const char *buf, bool)
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{
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/* All unix systems, except OSX. Only use escape codes on a TTY. */
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if (isatty(fileno(stderr))) {
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fprintf(stderr, "\033[1;31mError: %s\033[0;39m\n", buf);
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} else {
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fprintf(stderr, "Error: %s\n", buf);
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}
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}
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void NORETURN DoOSAbort()
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{
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abort();
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}
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#endif
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#ifndef WITH_COCOA
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std::optional<std::string> GetClipboardContents()
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{
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#ifdef WITH_SDL2
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if (SDL_HasClipboardText() == SDL_FALSE) return std::nullopt;
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char *clip = SDL_GetClipboardText();
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if (clip != nullptr) {
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std::string result = clip;
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SDL_free(clip);
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return result;
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}
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#endif
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return std::nullopt;
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}
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#endif
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#if defined(__EMSCRIPTEN__)
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void OSOpenBrowser(const std::string &url)
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{
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/* Implementation in pre.js */
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EM_ASM({ if (window["openttd_open_url"]) window.openttd_open_url($0, $1) }, url.c_str(), url.size());
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}
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#elif !defined( __APPLE__)
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void OSOpenBrowser(const std::string &url)
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{
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pid_t child_pid = fork();
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if (child_pid != 0) return;
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const char *args[3];
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args[0] = "xdg-open";
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args[1] = url.c_str();
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args[2] = nullptr;
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execvp(args[0], const_cast<char * const *>(args));
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DEBUG(misc, 0, "Failed to open url: %s", url.c_str());
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exit(0);
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}
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#endif /* __APPLE__ */
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void SetCurrentThreadName([[maybe_unused]] const char *threadName)
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{
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#if defined(__GLIBC__)
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if (threadName) pthread_setname_np(pthread_self(), threadName);
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#endif /* defined(__GLIBC__) */
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#if defined(__APPLE__)
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MacOSSetThreadName(threadName);
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#endif /* defined(__APPLE__) */
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}
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int GetCurrentThreadName(char *str, const char *last)
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{
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#if !defined(NO_THREADS) && defined(__GLIBC__)
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#if __GLIBC_PREREQ(2, 12)
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char buffer[16];
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int result = pthread_getname_np(pthread_self(), buffer, sizeof(buffer));
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if (result == 0) {
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return seprintf(str, last, "%s", buffer);
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}
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#endif
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#endif
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return 0;
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}
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#if !defined(NO_THREADS)
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static pthread_t main_thread;
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static pthread_t game_thread;
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#endif
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void SetSelfAsMainThread()
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{
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#if !defined(NO_THREADS)
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main_thread = pthread_self();
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#endif
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}
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void SetSelfAsGameThread()
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{
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#if !defined(NO_THREADS)
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game_thread = pthread_self();
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#endif
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}
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void PerThreadSetup() { }
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void PerThreadSetupInit() { }
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bool IsMainThread()
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{
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#if !defined(NO_THREADS)
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return main_thread == pthread_self();
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#else
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return true;
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#endif
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}
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bool IsNonMainThread()
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{
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#if !defined(NO_THREADS)
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return main_thread != pthread_self();
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#else
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return false;
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#endif
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}
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bool IsGameThread()
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{
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#if !defined(NO_THREADS)
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return game_thread == pthread_self();
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#else
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return true;
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#endif
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}
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bool IsNonGameThread()
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{
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#if !defined(NO_THREADS)
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return game_thread != pthread_self();
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#else
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return false;
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#endif
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}
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