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/* |
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* The ManaPlus Client |
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* Copyright (C) 2013-2019 The ManaPlus Developers |
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* |
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* This file is part of The ManaPlus Client. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#include "fs/virtfs/fsdirrwops.h" |
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#include "fs/virtfs/file.h" |
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#include "utils/cast.h" |
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#include "utils/checkutils.h" |
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PRAGMA48(GCC diagnostic push) |
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PRAGMA48(GCC diagnostic ignored "-Wshadow") |
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#include <SDL_rwops.h> |
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PRAGMA48(GCC diagnostic pop) |
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#include "debug.h" |
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namespace VirtFs |
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{ |
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namespace FsDir |
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{ |
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72356 |
RWOPSINT rwops_seek(SDL_RWops *const rw, |
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const RWOPSINT offset, |
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const int whence) |
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{ |
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✓✗ |
72356 |
if (rw == nullptr) |
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return -1; |
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File *const handle = static_cast<File *>( |
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72356 |
rw->hidden.unknown.data1); |
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72356 |
FILEHTYPE fd = handle->mFd; |
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72356 |
RWOPSINT pos = 0; |
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✓✓ |
72356 |
if (whence == SEEK_SET) |
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{ |
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pos = offset; |
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} |
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✓✓ |
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else if (whence == SEEK_CUR) |
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{ |
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#ifdef USE_FILE_FOPEN |
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3989 |
const int64_t current = ftell(fd); |
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#else // USE_FILE_FOPEN |
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const int64_t current = lseek(fd, 0, SEEK_CUR); |
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#endif // USE_FILE_FOPEN |
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✗✓ |
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if (current == -1) |
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{ |
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logger->assertLog( |
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"VirtFs::rwops_seek: Can't find position in file."); |
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return -1; |
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} |
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3989 |
pos = CAST_S32(current); |
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✗✓ |
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if (static_cast<int64_t>(pos) != current) |
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{ |
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logger->assertLog("VirtFs::rwops_seek: " |
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"Can't fit current file position in an int!"); |
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return -1; |
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} |
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✓✓ |
3989 |
if (offset == 0) /* this is a "tell" call. We're done. */ |
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return pos; |
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pos += offset; |
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} |
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✓✗ |
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else if (whence == SEEK_END) |
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{ |
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int64_t len = 0; |
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#ifdef USE_FILE_FOPEN |
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const long curpos = ftell(fd); |
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✗✓ |
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if (curpos < 0) |
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{ |
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reportAlways("FsDir::fileLength ftell error.") |
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return -1; |
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} |
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fseek(fd, 0, SEEK_END); |
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len = ftell(fd); |
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// fseek(fd, curpos, SEEK_SET); |
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#else // USE_FILE_FOPEN |
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struct stat statbuf; |
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if (fstat(fd, &statbuf) == -1) |
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{ |
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reportAlways("FsDir::fileLength error.") |
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len = -1; |
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} |
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else |
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{ |
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len = static_cast<int64_t>(statbuf.st_size); |
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} |
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#endif // USE_FILE_FOPEN |
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✗✓ |
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if (len == -1) |
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{ |
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#ifdef USE_FILE_FOPEN |
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if (fseek(fd, curpos, SEEK_SET) < 0) |
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{ |
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reportAlways("FsDir::fileLength fseek error.") |
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} |
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#endif // USE_FILE_FOPEN |
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logger->assertLog( |
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"VirtFs::rwops_seek:Can't find end of file."); |
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return -1; |
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} |
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pos = static_cast<RWOPSINT>(len); |
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if (static_cast<int64_t>(pos) != len) |
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{ |
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#ifdef USE_FILE_FOPEN |
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fseek(fd, curpos, SEEK_SET); |
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#endif // USE_FILE_FOPEN |
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logger->assertLog("VirtFs::rwops_seek: " |
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"Can't fit end-of-file position in an int!"); |
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return -1; |
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} |
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pos += offset; |
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} |
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else |
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{ |
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logger->assertLog( |
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"VirtFs::rwops_seek: Invalid 'whence' parameter."); |
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return -1; |
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} |
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✓✓ |
68392 |
if (pos < 0) |
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{ |
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logger->assertLog("VirtFs::rwops_seek: " |
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"Attempt to seek past start of file."); |
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return -1; |
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} |
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const int64_t res = FILESEEK(fd, pos, SEEK_SET); |
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✗✓ |
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if (res == -1) |
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{ |
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logger->assertLog("VirtFs::rwops_seek: seek error."); |
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return -1; |
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} |
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return pos; |
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} |
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83019 |
RWOPSSIZE rwops_read(SDL_RWops *const rw, |
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void *const ptr, |
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const RWOPSSIZE size, |
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const RWOPSSIZE maxnum) |
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{ |
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✓✗ |
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if (rw == nullptr) |
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return 0; |
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File *const handle = static_cast<File *>( |
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rw->hidden.unknown.data1); |
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FILEHTYPE fd = handle->mFd; |
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#ifdef USE_FILE_FOPEN |
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const int64_t rc = fread(ptr, size, maxnum, fd); |
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#else // USE_FILE_FOPEN |
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int max = size * maxnum; |
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int cnt = ::read(fd, ptr, max); |
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if (cnt <= 0) |
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return cnt; |
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const int64_t rc = cnt / size; |
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#endif // USE_FILE_FOPEN |
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#ifndef USE_FILE_FOPEN |
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if (rc != static_cast<int64_t>(maxnum)) |
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{ |
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const int64_t pos = lseek(fd, 0, SEEK_CUR); |
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struct stat statbuf; |
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if (fstat(fd, &statbuf) == -1) |
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{ |
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reportAlways("FsDir::fileLength error.") |
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return CAST_S32(rc); |
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} |
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} |
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#endif // USE_FILE_FOPEN |
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83019 |
return CAST_S32(rc); |
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} |
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RWOPSSIZE rwops_write(SDL_RWops *const rw, |
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const void *const ptr, |
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const RWOPSSIZE size, |
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const RWOPSSIZE maxnum) |
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{ |
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if (rw == nullptr) |
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return 0; |
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File *const handle = static_cast<File *>( |
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rw->hidden.unknown.data1); |
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FILEHTYPE fd = handle->mFd; |
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#ifdef USE_FILE_FOPEN |
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const int64_t rc = fwrite(ptr, size, maxnum, fd); |
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#else // USE_FILE_FOPEN |
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int max = size * maxnum; |
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int cnt = ::write(fd, ptr, max); |
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if (cnt <= 0) |
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return cnt; |
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const int64_t rc = cnt / size; |
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#endif // USE_FILE_FOPEN |
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#ifndef USE_FILE_FOPEN |
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if (rc != static_cast<int64_t>(maxnum)) |
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{ |
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const int64_t pos = lseek(fd, 0, SEEK_CUR); |
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struct stat statbuf; |
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if (fstat(fd, &statbuf) == -1) |
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{ |
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reportAlways("FsDir::fileLength error.") |
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return CAST_S32(rc); |
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} |
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} |
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#endif // USE_FILE_FOPEN |
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return CAST_S32(rc); |
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} |
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int rwops_close(SDL_RWops *const rw) |
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{ |
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✓✗ |
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if (rw == nullptr) |
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return 0; |
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File *const handle = static_cast<File*>( |
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rw->hidden.unknown.data1); |
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✓✗ |
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delete handle; |
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SDL_FreeRW(rw); |
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return 0; |
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} |
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#ifdef USE_SDL2 |
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RWOPSINT rwops_size(SDL_RWops *const rw) |
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{ |
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File *const handle = static_cast<File *>( |
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rw->hidden.unknown.data1); |
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FILEHTYPE fd = handle->mFd; |
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#ifdef USE_FILE_FOPEN |
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const long pos = ftell(fd); |
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fseek(fd, 0, SEEK_END); |
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const long sz = ftell(fd); |
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fseek(fd, pos, SEEK_SET); |
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return sz; |
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#else // USE_FILE_FOPEN |
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struct stat statbuf; |
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if (fstat(fd, &statbuf) == -1) |
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{ |
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reportAlways("FsDir::fileLength error.") |
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return -1; |
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} |
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return static_cast<int64_t>(statbuf.st_size); |
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#endif // USE_FILE_FOPEN |
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} |
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#endif // USE_SDL2 |
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} // namespace FsDir |
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} // namespace VirtFs |