Started debugging scanf() functions.

[pdclib] / functions / stdio / fscanf.c

diff --git a/functions/stdio/fscanf.c b/functions/stdio/fscanf.c
index 11708417d1c472b560161a91171a391fd51b581a..6ea4866452bebfa70c0b7c8aa13768257edbfbc5 100644 (file)
--- a/functions/stdio/fscanf.c
+++ b/functions/stdio/fscanf.c
@@ -1,8 +1,53 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-int fscanf( FILE * restrict stream, const char * restrict format, ... ) { /* TODO */ };
+/* $Id$ */
+
+/* fscanf( FILE *, const char *, ... )
+
+   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>
+#include <stdarg.h>
+
+#ifndef REGTEST
+
+int fscanf( FILE * _PDCLIB_restrict stream, const char * _PDCLIB_restrict format, ... )
+{
+    int rc;
+    va_list ap;
+    va_start( ap, format );
+    rc = vfscanf( stream, format, ap );
+    va_end( ap );
+    return rc;
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+#include <limits.h>
+#include <string.h>
+
+int main( void )
+{
+    char teststring1[] = "  1 23\045\0\067 ";
+    char buffer[15];
+    FILE * fh;
+    TESTCASE( ( fh = fopen( "testfile", "w+" ) ) != NULL );
+    TESTCASE( fwrite( teststring1, 15, 1, fh ) == 1 );
+    rewind( fh );
+    /* */
+    TESTCASE( memset( buffer, CHAR_MAX, 15 ) == buffer ); \
+    TESTCASE( fseek( fh, 0, SEEK_SET ) == 0 ); \
+    TESTCASE( fscanf( fh, "%14c", buffer ) == 1 ); \
+    TESTCASE( memcmp( buffer, teststring1 + 0, 14 ) == 0 ); \
+    TESTCASE( buffer[ 14 ] == CHAR_MAX ); \
+    TESTCASE( memset( buffer, CHAR_MAX, 15 ) == buffer ); \
+    TESTCASE( sscanf( teststring1 + 14, "%14c", buffer ) ); \
+    TESTCASE( memcmp( buffer, teststring1 + 0, 14 ) == 0 ); \
+    TESTCASE( buffer[ 14 ] == CHAR_MAX );
+    return TEST_RESULTS;
+}
+
+#endif