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-rw-r--r--libio/iowpadn.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/libio/iowpadn.c b/libio/iowpadn.c
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+++ b/libio/iowpadn.c
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+/* Copyright (C) 1993, 1997, 1999 Free Software Foundation, Inc.
+   This file is part of the GNU IO Library.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This 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
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this library; see the file COPYING.  If not, write to
+   the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA.
+
+   As a special exception, if you link this library with files
+   compiled with a GNU compiler to produce an executable, this does
+   not cause the resulting executable to be covered by the GNU General
+   Public License.  This exception does not however invalidate any
+   other reasons why the executable file might be covered by the GNU
+   General Public License.  */
+
+#include "libioP.h"
+
+#define PADSIZE 16
+static wchar_t const blanks[PADSIZE] =
+{
+  L' ', L' ', L' ', L' ', L' ', L' ', L' ', L' ',
+  L' ', L' ', L' ', L' ', L' ', L' ', L' ', L' '
+};
+static wchar_t const zeroes[PADSIZE] =
+{
+  L'0', L'0', L'0', L'0', L'0', L'0', L'0', L'0',
+  L'0', L'0', L'0', L'0', L'0', L'0', L'0', L'0'
+};
+
+_IO_ssize_t
+_IO_wpadn (fp, pad, count)
+      _IO_FILE *fp;
+      wint_t pad;
+      _IO_ssize_t count;
+{
+  wchar_t padbuf[PADSIZE];
+  const wchar_t *padptr;
+  int i;
+  _IO_size_t written = 0;
+  _IO_size_t w;
+
+  if (pad == L' ')
+    padptr = blanks;
+  else if (pad == L'0')
+    padptr = zeroes;
+  else
+    {
+      for (i = PADSIZE; --i >= 0; )
+	padbuf[i] = pad;
+      padptr = padbuf;
+    }
+  for (i = count; i >= PADSIZE; i -= PADSIZE)
+    {
+      w = _IO_sputn (fp, (char *) padptr, PADSIZE);
+      written += w;
+      if (w != PADSIZE)
+	return written;
+    }
+
+  if (i > 0)
+    {
+      w = _IO_sputn (fp, (char *) padptr, i);
+      written += w;
+    }
+  return written;
+}