1 files changed, 72 insertions, 0 deletions
diff --git a/stdio-common/printf-prs.c b/stdio-common/printf-prs.c
new file mode 100644
index 0000000000..811a9cb7eb
--- /dev/null
+++ b/stdio-common/printf-prs.c
@@ -0,0 +1,72 @@
+/* Copyright (C) 1991, 1992, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <stdio.h>
+#include <printf.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "printf-parse.h"
+
+
+size_t
+parse_printf_format (fmt, n, argtypes)
+      const char *fmt;
+      size_t n;
+      int *argtypes;
+{
+  size_t nargs;			/* Number of arguments.  */
+  size_t max_ref_arg;		/* Highest index used in a positional arg.  */
+  struct printf_spec spec;
+
+  nargs = 0;
+  max_ref_arg = 0;
+
+  /* Search for format specifications.  */
+  for (fmt = find_spec (fmt); *fmt != '\0'; fmt = spec.next_fmt)
+    {
+      /* Parse this spec.  */
+      nargs += parse_one_spec (fmt, nargs, &spec, &max_ref_arg);
+
+      /* If the width is determined by an argument this is an int.  */
+      if (spec.width_arg != -1 && spec.width_arg < n)
+	argtypes[spec.width_arg] = PA_INT;
+
+      /* If the precision is determined by an argument this is an int.  */
+      if (spec.prec_arg != -1 && spec.prec_arg < n)
+	argtypes[spec.prec_arg] = PA_INT;
+
+      if (spec.data_arg < n)
+	switch (spec.ndata_args)
+	  {
+	  case 0:		/* No arguments.  */
+	    break;
+	  case 1:		/* One argument; we already have the type.  */
+	    argtypes[spec.data_arg] = spec.data_arg_type;
+	    break;
+	  default:
+	    /* We have more than one argument for this format spec.  We must
+               call the arginfo function again to determine all the types.  */
+	    (void) (*__printf_arginfo_table[spec.info.spec])
+	      (&spec.info, n - spec.data_arg, &argtypes[spec.data_arg]);
+	    break;
+	  }
+    }
+
+  return MAX (nargs, max_ref_arg);
+}