X-Git-Url: https://pd.if.org/git/?p=pdclib;a=blobdiff_plain;f=functions%2Fstdio%2Ffgetpos.c;h=ff88fba500ec7ac3793d49f9b7f455026464ccdb;hp=c97cf0182365e02f0a67ada5f620499484f5f4cd;hb=da0f3f353d417fed71f358a48d5d5394145e460d;hpb=0a5395faab237ba9008352b0f4bee9659bbd3d5f

diff --git a/functions/stdio/fgetpos.c b/functions/stdio/fgetpos.c
index c97cf01..ff88fba 100644
--- a/functions/stdio/fgetpos.c
+++ b/functions/stdio/fgetpos.c
@@ -1,15 +1,51 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
+/* fgetpos( FILE * , fpos_t * )
 
-int fgetpos( FILE * restrict stream, fpos_t * restrict pos ) { /* TODO */ };
+   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>
 
-/* PDPC code - unreviewed
+#ifndef REGTEST
+#include "_PDCLIB_io.h"
+
+int _PDCLIB_fgetpos_unlocked( FILE * _PDCLIB_restrict stream, _PDCLIB_fpos_t * _PDCLIB_restrict pos )
 {
-    *pos = ftell(stream);
-    return (0);
+    pos->offset = stream->pos.offset + stream->bufidx - stream->ungetidx;
+    pos->mbs    = stream->pos.mbs;
+    /* TODO: Add mbstate. */
+    return 0;
 }
-*/
+
+int fgetpos( FILE * _PDCLIB_restrict stream, _PDCLIB_fpos_t * _PDCLIB_restrict pos )
+{
+    _PDCLIB_flockfile( stream );
+    int res = _PDCLIB_fgetpos_unlocked( stream, pos );
+    _PDCLIB_funlockfile( stream );
+    return res;
+}
+
+#endif
+
+#ifdef TEST
+#include "_PDCLIB_test.h"
+#include <string.h>
+
+int main( void )
+{
+    FILE * fh;
+    fpos_t pos1, pos2;
+    TESTCASE( ( fh = tmpfile() ) != NULL );
+    TESTCASE( fgetpos( fh, &pos1 ) == 0 );
+    TESTCASE( fwrite( teststring, 1, strlen( teststring ), fh ) == strlen( teststring ) );
+    TESTCASE( (size_t)ftell( fh ) == strlen( teststring ) );
+    TESTCASE( fgetpos( fh, &pos2 ) == 0 );
+    TESTCASE( fsetpos( fh, &pos1 ) == 0 );
+    TESTCASE( ftell( fh ) == 0 );
+    TESTCASE( fsetpos( fh, &pos2 ) == 0 );
+    TESTCASE( (size_t)ftell( fh ) == strlen( teststring ) );
+    TESTCASE( fclose( fh ) == 0 );
+    return TEST_RESULTS;
+}
+
+#endif