65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
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This file is part of LibMaxsi.
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LibMaxsi is free software: you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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LibMaxsi is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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details.
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You should have received a copy of the GNU Lesser General Public License
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along with LibMaxsi. If not, see <http://www.gnu.org/licenses/>.
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fwrote.cpp
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Writes data to a FILE.
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*******************************************************************************/
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#include <stdio.h>
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#include <errno.h>
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extern "C" size_t fwrite(const void* ptr, size_t size, size_t nmemb, FILE* fp)
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{
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if ( !fp->write_func ) { errno = EBADF; return 0; }
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fp->flags &= ~_FILE_LAST_READ; fp->flags |= _FILE_LAST_WRITE;
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char* str = (char*) ptr;
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size_t total = size * nmemb;
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size_t sofar = 0;
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while ( sofar < total )
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{
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size_t left = total - sofar;
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if ( (!fp->bufferused && fp->buffersize <= left) ||
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(fp->flags & _FILE_NO_BUFFER) )
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{
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return sofar + fp->write_func(str + sofar, 1, left, fp->user);
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}
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size_t available = fp->buffersize - fp->bufferused;
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size_t count = ( left < available ) ? left : available;
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count = left;
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for ( size_t i = 0; i < count; i++ )
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{
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char c = str[sofar++];
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fp->buffer[fp->bufferused++] = c;
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if ( c == '\n' )
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{
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if ( fflush(fp) ) { return sofar; }
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break;
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}
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}
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if ( fp->buffersize <= fp->bufferused )
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{
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if ( fflush(fp) ) { return sofar; }
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}
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}
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return sofar;
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}
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