2.5-18.1

1 files changed, 150 insertions, 0 deletions

diff --git a/libio/wmemstream.c b/libio/wmemstream.c
new file mode 100644
index 0000000000..7bf6a429ac
--- /dev/null
+++ b/libio/wmemstream.c
@@ -0,0 +1,150 @@
+/* Copyright (C) 1995-97,99,2000,2002-2004,2006 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include "libioP.h"
+#include "strfile.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <wchar.h>
+
+
+struct _IO_FILE_wmemstream
+{
+  _IO_strfile _sf;
+  wchar_t **bufloc;
+  _IO_size_t *sizeloc;
+};
+
+
+static int _IO_wmem_sync (_IO_FILE* fp) __THROW;
+static void _IO_wmem_finish (_IO_FILE* fp, int) __THROW;
+
+
+static const struct _IO_jump_t _IO_wmem_jumps =
+{
+  JUMP_INIT_DUMMY,
+  JUMP_INIT (finish, _IO_wmem_finish),
+  JUMP_INIT (overflow, (_IO_overflow_t) _IO_wstr_overflow),
+  JUMP_INIT (underflow, (_IO_underflow_t) _IO_wstr_underflow),
+  JUMP_INIT (uflow, (_IO_underflow_t) INTUSE(_IO_wdefault_uflow)),
+  JUMP_INIT (pbackfail, (_IO_pbackfail_t) _IO_wstr_pbackfail),
+  JUMP_INIT (xsputn, INTUSE(_IO_wdefault_xsputn)),
+  JUMP_INIT (xsgetn, INTUSE(_IO_wdefault_xsgetn)),
+  JUMP_INIT (seekoff, _IO_wstr_seekoff),
+  JUMP_INIT (seekpos, _IO_default_seekpos),
+  JUMP_INIT (setbuf, _IO_default_setbuf),
+  JUMP_INIT (sync, _IO_wmem_sync),
+  JUMP_INIT (doallocate, INTUSE(_IO_wdefault_doallocate)),
+  JUMP_INIT (read, _IO_default_read),
+  JUMP_INIT (write, _IO_default_write),
+  JUMP_INIT (seek, _IO_default_seek),
+  JUMP_INIT (close, _IO_default_close),
+  JUMP_INIT (stat, _IO_default_stat),
+  JUMP_INIT (showmanyc, _IO_default_showmanyc),
+  JUMP_INIT (imbue, _IO_default_imbue)
+};
+
+/* Open a stream that writes into a malloc'd buffer that is expanded as
+   necessary.  *BUFLOC and *SIZELOC are updated with the buffer's location
+   and the number of characters written on fflush or fclose.  */
+_IO_FILE *
+open_wmemstream (bufloc, sizeloc)
+     wchar_t **bufloc;
+     _IO_size_t *sizeloc;
+{
+  struct locked_FILE
+  {
+    struct _IO_FILE_wmemstream fp;
+#ifdef _IO_MTSAFE_IO
+    _IO_lock_t lock;
+#endif
+    struct _IO_wide_data wd;
+  } *new_f;
+  wchar_t *buf;
+
+  new_f = (struct locked_FILE *) malloc (sizeof (struct locked_FILE));
+  if (new_f == NULL)
+    return NULL;
+#ifdef _IO_MTSAFE_IO
+  new_f->fp._sf._sbf._f._lock = &new_f->lock;
+#endif
+
+  buf = calloc (1, _IO_BUFSIZ);
+  if (buf == NULL)
+    return NULL;
+
+  _IO_no_init (&new_f->fp._sf._sbf._f, 0, 0, &new_f->wd, &_IO_wmem_jumps);
+  _IO_fwide (&new_f->fp._sf._sbf._f, 1);
+  _IO_wstr_init_static (&new_f->fp._sf._sbf._f, buf,
+			_IO_BUFSIZ / sizeof (wchar_t), buf);
+  new_f->fp._sf._sbf._f._flags2 &= ~_IO_FLAGS2_USER_WBUF;
+  new_f->fp._sf._s._allocate_buffer = (_IO_alloc_type) malloc;
+  new_f->fp._sf._s._free_buffer = (_IO_free_type) free;
+
+  new_f->fp.bufloc = bufloc;
+  new_f->fp.sizeloc = sizeloc;
+
+  return (_IO_FILE *) &new_f->fp._sf._sbf;
+}
+
+
+static int
+_IO_wmem_sync (fp)
+     _IO_FILE* fp;
+{
+  struct _IO_FILE_wmemstream *mp = (struct _IO_FILE_wmemstream *) fp;
+
+  if (fp->_wide_data->_IO_write_ptr == fp->_wide_data->_IO_write_end)
+    {
+      _IO_wstr_overflow (fp, '\0');
+      --fp->_wide_data->_IO_write_ptr;
+    }
+  else
+    *fp->_wide_data->_IO_write_ptr = '\0';
+
+  *mp->bufloc = fp->_wide_data->_IO_write_base;
+  *mp->sizeloc = (fp->_wide_data->_IO_write_ptr
+		  - fp->_wide_data->_IO_write_base);
+
+  return 0;
+}
+
+
+static void
+_IO_wmem_finish (fp, dummy)
+     _IO_FILE* fp;
+     int dummy;
+{
+  struct _IO_FILE_wmemstream *mp = (struct _IO_FILE_wmemstream *) fp;
+
+  *mp->bufloc = (wchar_t *) realloc (fp->_wide_data->_IO_write_base,
+				     (fp->_wide_data->_IO_write_ptr
+				      - fp->_wide_data->_IO_write_base + 1)
+				     * sizeof (wchar_t));
+  if (*mp->bufloc != NULL)
+    {
+      size_t len = (fp->_wide_data->_IO_write_ptr
+		    - fp->_wide_data->_IO_write_base);
+      (*mp->bufloc)[len] = '\0';
+      *mp->sizeloc = len;
+
+      fp->_wide_data->_IO_buf_base = NULL;
+    }
+
+  _IO_wstr_finish (fp, 0);
+}