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46 lines
1.7 KiB
C++
46 lines
1.7 KiB
C++
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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fshutdown.cpp
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Uninstalls the backend from a FILE so another can be reinstalled.
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*******************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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extern "C" int fshutdown(FILE* fp)
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{
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int ret = fflush(fp);
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if ( ret )
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{
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/* TODO: How to report errors here? fclose may need us to return its
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exact error value, for instance, as with popen/pclose. */;
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}
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ret = fp->close_func ? fp->close_func(fp->user) : ret;
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if ( fp->flags & _FILE_BUFFER_OWNED )
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free(fp->buffer);
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// Resetting the FILE here isn't needed in the case where fclose calls us,
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// but it's nice to zero it out anyway (avoiding state) data, and it's a
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// feature when called by freopen that wishes to reuse the FILE. It also
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// means that the file is always in a consistent state.
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fresetfile(fp);
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return ret;
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}
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