Namespace cleanliness: Rename all ***_unlocked functions to _PDCLIB_***_unlocked.

[pdclib.old] / functions / stdio / fgetc.c

diff --git a/functions/stdio/fgetc.c b/functions/stdio/fgetc.c
index 1ca2367b4e6b6ffac7b79c99c6b7e05fd8b402d3..114ab975e2e9b928e7154bd04a41ca7ce2ae4697 100644 (file)
--- a/functions/stdio/fgetc.c
+++ b/functions/stdio/fgetc.c
@@ -1,8 +1,47 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-int fgetc( FILE * stream ) { /* TODO */ };
+/* $Id$ */
+
+/* fgetc( FILE * )
+
+   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_fgetc_unlocked( FILE * stream )
+{
+    if ( _PDCLIB_prepread( stream ) == EOF )
+    {
+        return EOF;
+    }
+
+    char c;
+
+    size_t n = _PDCLIB_getchars( &c, 1, EOF, stream );
+
+    return n == 0 ? EOF : (unsigned char) c;
+}
+
+int fgetc( FILE * stream )
+{
+    _PDCLIB_flockfile( stream );
+    int c = _PDCLIB_fgetc_unlocked( stream );
+    _PDCLIB_funlockfile( stream );
+    return c;
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+    /* Testing covered by ftell.c */
+    return TEST_RESULTS;
+}
+
+#endif