1 /* _PDCLIB_prepread( struct _PDCLIB_file_t * )
3 This file is part of the Public Domain C Library (PDCLib).
4 Permission is granted to use, modify, and / or redistribute at will.
9 #include <_PDCLIB_glue.h>
11 int _PDCLIB_prepread( struct _PDCLIB_file_t * stream )
13 if ( ( stream->bufidx > stream->bufend ) ||
14 ( stream->status & ( _PDCLIB_FWRITE | _PDCLIB_FAPPEND | _PDCLIB_ERRORFLAG | _PDCLIB_WIDESTREAM | _PDCLIB_EOFFLAG ) ) ||
15 ! ( stream->status & ( _PDCLIB_FREAD | _PDCLIB_FRW ) ) )
17 /* Function called on illegal (e.g. output) stream.
18 See comments on implementation-defined errno values in
21 _PDCLIB_errno = _PDCLIB_ERROR;
22 stream->status |= _PDCLIB_ERRORFLAG;
25 stream->status |= _PDCLIB_FREAD | _PDCLIB_BYTESTREAM;
26 if ( ( stream->bufidx == stream->bufend ) && ( stream->ungetidx == 0 ) )
28 return _PDCLIB_fillbuffer( stream );
37 #include <_PDCLIB_test.h>
41 /* Testing covered by ftell.c */