X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdio%2Fvsnprintf.c;h=84ad51dc462d41a7e14c4b4a747a3ec076e1d2dc;hb=46983693f019c28a1c2420e9e7dfc204916af411;hp=6fae08075c8840da65fc55f8972e8d97f16ab8cd;hpb=1d9d92ba957a0b8307c9a65c35867fde68e6533b;p=pdclib

diff --git a/functions/stdio/vsnprintf.c b/functions/stdio/vsnprintf.c
index 6fae080..84ad51d 100644
--- a/functions/stdio/vsnprintf.c
+++ b/functions/stdio/vsnprintf.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 vsnprintf( char * restrict s, size_t n, const char * restrict format, va_list ap ) { /* TODO */ };
+/* $Id$ */
+
+/* vsnprintf( char *, size_t, const char *, va_list ap )
+
+   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 vsnprintf( char * s, size_t n, const char * format, _PDCLIB_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, n, 0, 0, s, 0, 0, NULL, arg };
+    while ( *format != '\0' )
+    {
+        const char * rc;
+        if ( ( *format != '%' ) || ( ( rc = _PDCLIB_print( format, &status ) ) == format ) )
+        {
+            /* No conversion specifier, print verbatim */
+            s[ status.i++ ] = *(format++);
+        }
+        else
+        {
+            /* Continue parsing after conversion specifier */
+            format = rc;
+        }
+    }
+    s[ status.i ] = '\0';
+    return status.i;
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+    TESTCASE( NO_TESTDRIVER );
+    return TEST_RESULTS;
+}
+
+#endif