X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdio%2Ffsetpos.c;h=5a78706731d7f8ee355fdf2e0a4acc55da34bdbf;hb=HEAD;hp=044c9744d83c54700a8ffb1a1c8a8a0ba2308caf;hpb=c8f799d852e3698468a78954d82588e841cc0b70;p=pdclib.old

diff --git a/functions/stdio/fsetpos.c b/functions/stdio/fsetpos.c
index 044c974..5a78706 100644
--- a/functions/stdio/fsetpos.c
+++ b/functions/stdio/fsetpos.c
@@ -1,15 +1,53 @@
-/* ----------------------------------------------------------------------------
- * $Id$
- * ----------------------------------------------------------------------------
- * Public Domain C Library - http://pdclib.sourceforge.net
- * This code is Public Domain. Use, modify, and redistribute at will.
- * --------------------------------------------------------------------------*/
+/* $Id$ */
 
-int fsetpos( FILE * stream, const fpos_t * pos ) { /* TODO */ };
+/* fsetpos( FILE *, const fpos_t * )
 
-/* PDPC code - unreviewed
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <stdio.h>
+
+#ifndef REGTEST
+#include <_PDCLIB_io.h>
+
+int _PDCLIB_fsetpos_unlocked( FILE * stream, 
+                      const _PDCLIB_fpos_t * pos )
 {
-    fseek(stream, *pos, SEEK_SET);
-    return (0);
+    if ( stream->status & _PDCLIB_FWRITE )
+    {
+        if ( _PDCLIB_flushbuffer( stream ) == EOF )
+        {
+            return EOF;
+        }
+    }
+    if ( _PDCLIB_seek( stream, pos->offset, SEEK_SET ) == EOF )
+    {
+        return EOF;
+    }
+    stream->pos.mbs = pos->mbs;
+    
+    return 0;
 }
-*/
+
+int fsetpos( FILE * stream, 
+             const _PDCLIB_fpos_t * pos )
+{
+    _PDCLIB_flockfile( stream );
+    int res = _PDCLIB_fsetpos_unlocked( stream, pos );
+    _PDCLIB_funlockfile( stream );
+    return res;
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+    /* fsetpos() tested together with fsetpos(). */
+    return TEST_RESULTS;
+}
+
+#endif