X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdio%2Fvfprintf.c;h=8e3ff9548482a81610cd12f937c191e310c76aff;hb=51ffde01e2c794ed75f9a202540e2038fce60148;hp=a903d8f1822aa93ae7a499ffd53ce1a71ffc7054;hpb=34893ecc2200dc7017c36a54cb6c5f4c2378b5ec;p=pdclib

diff --git a/functions/stdio/vfprintf.c b/functions/stdio/vfprintf.c
index a903d8f..8e3ff95 100644
--- a/functions/stdio/vfprintf.c
+++ b/functions/stdio/vfprintf.c
@@ -1,8 +1,48 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-int vfprintf( FILE * restrict stream, const char * restrict format, va_list ap ) { /* TODO */ };
+/* $Id$ */
+
+/* vfprintf( FILE *, const char *, va_list )
+
+   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>
+#include <stdint.h>
+
+#ifndef REGTEST
+
+int vfprintf( struct _PDCLIB_file_t * _PDCLIB_restrict stream, const char * _PDCLIB_restrict format, va_list arg )
+{
+    /* TODO: This function should interpret format as multibyte characters.  */
+    /* Members: base, flags, n, i, this, s, width, prec, stream, arg         */
+    struct _PDCLIB_status_t status = { 0, 0, SIZE_MAX, 0, 0, NULL, 0, 0, stream, arg };
+    while ( *format != '\0' )
+    {
+        const char * rc;
+        if ( ( *format != '%' ) || ( ( rc = _PDCLIB_print( format, &status ) ) == format ) )
+        {
+            /* No conversion specifier, print verbatim */
+            putc( *(format++), stream );
+        }
+        else
+        {
+            /* Continue parsing after conversion specifier */
+            format = rc;
+        }
+    }
+    return status.i;
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+    TESTCASE( NO_TESTDRIVER );
+    return TEST_RESULTS;
+}
+
+#endif