Testdriver for gets(). Turns out fseek() was not tested yet.

[pdclib] / functions / stdio / fseek.c

diff --git a/functions/stdio/fseek.c b/functions/stdio/fseek.c
index f33f250938a0e1cdaaa7fddbe6f971b2e8d52b3a..1c5332d0b5832f8e49535a6bb69e8214891dab2f 100644 (file)
--- a/functions/stdio/fseek.c
+++ b/functions/stdio/fseek.c
@@ -1,6 +1,6 @@
 /* $Id$ */
 
-/* fseek( FILE *, long int, int )
+/* fseek( FILE *, long offset, int )
 
    This file is part of the Public Domain C Library (PDCLib).
    Permission is granted to use, modify, and / or redistribute at will.
@@ -10,10 +10,23 @@
 
 #ifndef REGTEST
 
-int fseek( struct _PDCLIB_file_t * stream, long int offset, int whence )
+#include <_PDCLIB_glue.h>
+
+int fseek( struct _PDCLIB_file_t * stream, long offset, int whence )
 {
-    /* TODO: Implement. */
-    return 0;
+    if ( stream->status & _PDCLIB_FWRITE )
+    {
+        if ( _PDCLIB_flushbuffer( stream ) == EOF )
+        {
+            return EOF;
+        }
+    }
+    stream->status &= ~ _PDCLIB_EOFFLAG;
+    if ( stream->status & _PDCLIB_FRW )
+    {
+        stream->status &= ~ ( _PDCLIB_FREAD | _PDCLIB_FWRITE );
+    }
+    return ( _PDCLIB_seek( stream, offset, whence ) != EOF ) ? 0 : EOF;
 }
 
 #endif
@@ -28,3 +41,4 @@ int main( void )
 }
 
 #endif
+