X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;ds=sidebyside;f=functions%2Fstdio%2Ffsetpos.c;h=e28b2b1af627e18beb8793c51557d52149ffeaec;hb=da0f3f353d417fed71f358a48d5d5394145e460d;hp=ae100394be6974721496eae8ab3cc649f9a9fd1c;hpb=34893ecc2200dc7017c36a54cb6c5f4c2378b5ec;p=pdclib

diff --git a/functions/stdio/fsetpos.c b/functions/stdio/fsetpos.c
index ae10039..e28b2b1 100644
--- a/functions/stdio/fsetpos.c
+++ b/functions/stdio/fsetpos.c
@@ -1,8 +1,51 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-int fsetpos( FILE * stream, const fpos_t * pos ) { /* TODO */ };
+/* fsetpos( FILE *, const fpos_t * )
+
+   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 )
+{
+    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