-/* ----------------------------------------------------------------------------
- * $Id$
- * ----------------------------------------------------------------------------
- * Public Domain C Library - http://pdclib.sourceforge.net
- * This code is Public Domain. Use, modify, and redistribute at will.
- * --------------------------------------------------------------------------*/
+/* $Id$ */
-int fseek( FILE * stream, long offset, int mode ) { /* TODO */ };
+/* fseek( FILE *, long offset, int )
-/* PDPC code - unreviewed
-Read the note in fopen.c.
-{
- long newpos;
-#ifdef __OS2__
- ULONG retpos;
- APIRET rc;
-#endif
+ This file is part of the Public Domain C Library (PDCLib).
+ Permission is granted to use, modify, and / or redistribute at will.
+*/
- if (stream->mode == __WRITE_MODE)
- {
- fflush(stream);
- }
- if (whence == SEEK_SET)
- {
- newpos = offset;
- }
- else if (whence == SEEK_CUR)
+#include <stdio.h>
+
+#ifndef REGTEST
+
+#include <_PDCLIB_glue.h>
+
+int fseek( struct _PDCLIB_file_t * stream, long offset, int whence )
+{
+ if ( stream->status & _PDCLIB_FWRITE )
{
- newpos = offset + stream->bufStartR + (stream->upto - stream->fbuf);
+ if ( _PDCLIB_flushbuffer( stream ) == EOF )
+ {
+ return EOF;
+ }
}
- if ((newpos > stream->bufStartR)
- && (newpos < (stream->bufStartR + (stream->endbuf - stream->fbuf)))
- && stream->update)
+ stream->status &= ~ _PDCLIB_EOFFLAG;
+ if ( stream->status & _PDCLIB_FRW )
{
- stream->upto = stream->fbuf + (size_t)(newpos - stream->bufStartR);
+ stream->status &= ~ ( _PDCLIB_FREAD | _PDCLIB_FWRITE );
}
- else
- {
-#ifdef __OS2__
- rc = DosSetFilePtr(stream->hfile, newpos, FILE_BEGIN, &retpos);
- if ((rc != 0) || (retpos != newpos))
- {
- errno = rc;
- return (-1);
- }
- else
- {
- stream->endbuf = stream->fbuf + stream->szfbuf;
- stream->upto = stream->endbuf;
- stream->bufStartR = newpos - stream->szfbuf;
- }
-#endif
-#ifdef __MSDOS
- __seek(stream->hfile, newpos, whence);
- stream->endbuf = stream->fbuf + stream->szfbuf;
- stream->upto = stream->endbuf;
- stream->bufStartR = newpos - stream->szfbuf;
+ return ( _PDCLIB_seek( stream, offset, whence ) == offset ) ? 0 : EOF;
+}
+
#endif
- }
- stream->quickBin = 0;
- stream->quickText = 0;
- stream->ungetCh = -1;
- return (0);
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+ /* Testing covered by ftell.c */
+ return TEST_RESULTS;
}
-*/
+
+#endif
+