Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 388 insertions, 0 deletions

diff --git a/REORG.TODO/libio/wstrops.c b/REORG.TODO/libio/wstrops.c
new file mode 100644
index 0000000000..bb62fd6702
--- /dev/null
+++ b/REORG.TODO/libio/wstrops.c
@@ -0,0 +1,388 @@
+/* Copyright (C) 1993-2017 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, see
+   <http://www.gnu.org/licenses/>.
+
+   As a special exception, if you link the code in this file with
+   files compiled with a GNU compiler to produce an executable,
+   that does not cause the resulting executable to be covered by
+   the GNU Lesser General Public License.  This exception does not
+   however invalidate any other reasons why the executable file
+   might be covered by the GNU Lesser General Public License.
+   This exception applies to code released by its copyright holders
+   in files containing the exception.  */
+
+#include <assert.h>
+#include "strfile.h"
+#include "libioP.h"
+#include <string.h>
+#include <wchar.h>
+#include <stdio_ext.h>
+
+void
+_IO_wstr_init_static (_IO_FILE *fp, wchar_t *ptr, _IO_size_t size,
+		      wchar_t *pstart)
+{
+  wchar_t *end;
+
+  if (size == 0)
+    end = ptr + __wcslen (ptr);
+  else if ((_IO_size_t) ptr + size * sizeof (wchar_t) > (_IO_size_t) ptr)
+    end = ptr + size;
+  else
+    /* Even for misaligned ptr make sure there is integral number of wide
+       characters.  */
+    end = ptr + (-1 - (_IO_size_t) ptr) / sizeof (wchar_t);
+  _IO_wsetb (fp, ptr, end, 0);
+
+  fp->_wide_data->_IO_write_base = ptr;
+  fp->_wide_data->_IO_read_base = ptr;
+  fp->_wide_data->_IO_read_ptr = ptr;
+  if (pstart)
+    {
+      fp->_wide_data->_IO_write_ptr = pstart;
+      fp->_wide_data->_IO_write_end = end;
+      fp->_wide_data->_IO_read_end = pstart;
+    }
+  else
+    {
+      fp->_wide_data->_IO_write_ptr = ptr;
+      fp->_wide_data->_IO_write_end = ptr;
+      fp->_wide_data->_IO_read_end = end;
+    }
+  /* A null _allocate_buffer function flags the strfile as being static. */
+  (((_IO_strfile *) fp)->_s._allocate_buffer) = (_IO_alloc_type)0;
+}
+
+_IO_wint_t
+_IO_wstr_overflow (_IO_FILE *fp, _IO_wint_t c)
+{
+  int flush_only = c == WEOF;
+  _IO_size_t pos;
+  if (fp->_flags & _IO_NO_WRITES)
+      return flush_only ? 0 : WEOF;
+  if ((fp->_flags & _IO_TIED_PUT_GET) && !(fp->_flags & _IO_CURRENTLY_PUTTING))
+    {
+      fp->_flags |= _IO_CURRENTLY_PUTTING;
+      fp->_wide_data->_IO_write_ptr = fp->_wide_data->_IO_read_ptr;
+      fp->_wide_data->_IO_read_ptr = fp->_wide_data->_IO_read_end;
+    }
+  pos = fp->_wide_data->_IO_write_ptr - fp->_wide_data->_IO_write_base;
+  if (pos >= (_IO_size_t) (_IO_wblen (fp) + flush_only))
+    {
+      if (fp->_flags2 & _IO_FLAGS2_USER_WBUF) /* not allowed to enlarge */
+	return WEOF;
+      else
+	{
+	  wchar_t *new_buf;
+	  wchar_t *old_buf = fp->_wide_data->_IO_buf_base;
+	  size_t old_wblen = _IO_wblen (fp);
+	  _IO_size_t new_size = 2 * old_wblen + 100;
+
+	  if (__glibc_unlikely (new_size < old_wblen)
+	      || __glibc_unlikely (new_size > SIZE_MAX / sizeof (wchar_t)))
+	    return EOF;
+
+	  new_buf
+	    = (wchar_t *) (*((_IO_strfile *) fp)->_s._allocate_buffer) (new_size
+									* sizeof (wchar_t));
+	  if (new_buf == NULL)
+	    {
+	      /*	  __ferror(fp) = 1; */
+	      return WEOF;
+	    }
+	  if (old_buf)
+	    {
+	      __wmemcpy (new_buf, old_buf, old_wblen);
+	      (*((_IO_strfile *) fp)->_s._free_buffer) (old_buf);
+	      /* Make sure _IO_setb won't try to delete _IO_buf_base. */
+	      fp->_wide_data->_IO_buf_base = NULL;
+	    }
+
+	  __wmemset (new_buf + old_wblen, L'\0', new_size - old_wblen);
+
+	  _IO_wsetb (fp, new_buf, new_buf + new_size, 1);
+	  fp->_wide_data->_IO_read_base =
+	    new_buf + (fp->_wide_data->_IO_read_base - old_buf);
+	  fp->_wide_data->_IO_read_ptr =
+	    new_buf + (fp->_wide_data->_IO_read_ptr - old_buf);
+	  fp->_wide_data->_IO_read_end =
+	    new_buf + (fp->_wide_data->_IO_read_end - old_buf);
+	  fp->_wide_data->_IO_write_ptr =
+	    new_buf + (fp->_wide_data->_IO_write_ptr - old_buf);
+
+	  fp->_wide_data->_IO_write_base = new_buf;
+	  fp->_wide_data->_IO_write_end = fp->_wide_data->_IO_buf_end;
+	}
+    }
+
+  if (!flush_only)
+    *fp->_wide_data->_IO_write_ptr++ = c;
+  if (fp->_wide_data->_IO_write_ptr > fp->_wide_data->_IO_read_end)
+    fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_write_ptr;
+  return c;
+}
+
+
+_IO_wint_t
+_IO_wstr_underflow (_IO_FILE *fp)
+{
+  if (fp->_wide_data->_IO_write_ptr > fp->_wide_data->_IO_read_end)
+    fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_write_ptr;
+  if ((fp->_flags & _IO_TIED_PUT_GET) && (fp->_flags & _IO_CURRENTLY_PUTTING))
+    {
+      fp->_flags &= ~_IO_CURRENTLY_PUTTING;
+      fp->_wide_data->_IO_read_ptr = fp->_wide_data->_IO_write_ptr;
+      fp->_wide_data->_IO_write_ptr = fp->_wide_data->_IO_write_end;
+    }
+  if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end)
+    return *fp->_wide_data->_IO_read_ptr;
+  else
+    return WEOF;
+}
+
+
+/* The size of the valid part of the buffer.  */
+_IO_ssize_t
+_IO_wstr_count (_IO_FILE *fp)
+{
+  struct _IO_wide_data *wd = fp->_wide_data;
+
+  return ((wd->_IO_write_ptr > wd->_IO_read_end
+	   ? wd->_IO_write_ptr : wd->_IO_read_end)
+	  - wd->_IO_read_base);
+}
+
+
+static int
+enlarge_userbuf (_IO_FILE *fp, _IO_off64_t offset, int reading)
+{
+  if ((_IO_ssize_t) offset <= _IO_wblen (fp))
+    return 0;
+
+  struct _IO_wide_data *wd = fp->_wide_data;
+
+  _IO_ssize_t oldend = wd->_IO_write_end - wd->_IO_write_base;
+
+  /* Try to enlarge the buffer.  */
+  if (fp->_flags2 & _IO_FLAGS2_USER_WBUF)
+    /* User-provided buffer.  */
+    return 1;
+
+  _IO_size_t newsize = offset + 100;
+  if (__glibc_unlikely (newsize > SIZE_MAX / sizeof (wchar_t)))
+    return 1;
+
+  wchar_t *oldbuf = wd->_IO_buf_base;
+  wchar_t *newbuf
+    = (wchar_t *) (*((_IO_strfile *) fp)->_s._allocate_buffer) (newsize
+								* sizeof (wchar_t));
+  if (newbuf == NULL)
+    return 1;
+
+  if (oldbuf != NULL)
+    {
+      __wmemcpy (newbuf, oldbuf, _IO_wblen (fp));
+      (*((_IO_strfile *) fp)->_s._free_buffer) (oldbuf);
+      /* Make sure _IO_setb won't try to delete
+	 _IO_buf_base. */
+      wd->_IO_buf_base = NULL;
+    }
+
+  _IO_wsetb (fp, newbuf, newbuf + newsize, 1);
+
+  if (reading)
+    {
+      wd->_IO_write_base = newbuf + (wd->_IO_write_base - oldbuf);
+      wd->_IO_write_ptr = newbuf + (wd->_IO_write_ptr - oldbuf);
+      wd->_IO_write_end = newbuf + (wd->_IO_write_end - oldbuf);
+      wd->_IO_read_ptr = newbuf + (wd->_IO_read_ptr - oldbuf);
+
+      wd->_IO_read_base = newbuf;
+      wd->_IO_read_end = wd->_IO_buf_end;
+    }
+  else
+    {
+      wd->_IO_read_base = newbuf + (wd->_IO_read_base - oldbuf);
+      wd->_IO_read_ptr = newbuf + (wd->_IO_read_ptr - oldbuf);
+      wd->_IO_read_end = newbuf + (wd->_IO_read_end - oldbuf);
+      wd->_IO_write_ptr = newbuf + (wd->_IO_write_ptr - oldbuf);
+
+      wd->_IO_write_base = newbuf;
+      wd->_IO_write_end = wd->_IO_buf_end;
+    }
+
+  /* Clear the area between the last write position and th
+     new position.  */
+  assert (offset >= oldend);
+  if (reading)
+    __wmemset (wd->_IO_read_base + oldend, L'\0', offset - oldend);
+  else
+    __wmemset (wd->_IO_write_base + oldend, L'\0', offset - oldend);
+
+  return 0;
+}
+
+static void
+_IO_wstr_switch_to_get_mode (_IO_FILE *fp)
+{
+  if (_IO_in_backup (fp))
+    fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_backup_base;
+  else
+    {
+      fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_buf_base;
+      if (fp->_wide_data->_IO_write_ptr > fp->_wide_data->_IO_read_end)
+        fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_write_ptr;
+    }
+  fp->_wide_data->_IO_read_ptr = fp->_wide_data->_IO_write_ptr;
+  fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_write_ptr;
+
+  fp->_flags &= ~_IO_CURRENTLY_PUTTING;
+}
+
+_IO_off64_t
+_IO_wstr_seekoff (_IO_FILE *fp, _IO_off64_t offset, int dir, int mode)
+{
+  _IO_off64_t new_pos;
+
+  if (mode == 0 && (fp->_flags & _IO_TIED_PUT_GET))
+    mode = (fp->_flags & _IO_CURRENTLY_PUTTING ? _IOS_OUTPUT : _IOS_INPUT);
+
+  bool was_writing = (fp->_wide_data->_IO_write_ptr >
+			fp->_wide_data->_IO_write_base
+		     || _IO_in_put_mode (fp));
+  if (was_writing)
+    _IO_wstr_switch_to_get_mode (fp);
+
+  if (mode == 0)
+    {
+      new_pos = (fp->_wide_data->_IO_write_ptr
+		 - fp->_wide_data->_IO_write_base);
+    }
+  else
+    {
+      _IO_ssize_t cur_size = _IO_wstr_count (fp);
+      new_pos = EOF;
+
+      /* Move the get pointer, if requested. */
+      if (mode & _IOS_INPUT)
+	{
+	  _IO_ssize_t base;
+	  switch (dir)
+	    {
+	    case _IO_seek_set:
+	      base = 0;
+	      break;
+	    case _IO_seek_cur:
+	      base = (fp->_wide_data->_IO_read_ptr
+		     - fp->_wide_data->_IO_read_base);
+	      break;
+	    default: /* case _IO_seek_end: */
+	      base = cur_size;
+	      break;
+	    }
+	  _IO_ssize_t maxval = SSIZE_MAX/sizeof (wchar_t) - base;
+	  if (offset < -base || offset > maxval)
+	    {
+	      __set_errno (EINVAL);
+	      return EOF;
+	    }
+	  base += offset;
+	  if (base > cur_size
+	      && enlarge_userbuf (fp, base, 1) != 0)
+	    return EOF;
+	  fp->_wide_data->_IO_read_ptr = (fp->_wide_data->_IO_read_base
+					  + base);
+	  fp->_wide_data->_IO_read_end = (fp->_wide_data->_IO_read_base
+					  + cur_size);
+	  new_pos = offset;
+	}
+
+      /* Move the put pointer, if requested. */
+      if (mode & _IOS_OUTPUT)
+	{
+	  _IO_ssize_t base;
+	  switch (dir)
+	    {
+	    case _IO_seek_set:
+	      base = 0;
+	      break;
+	    case _IO_seek_cur:
+	      base = (fp->_wide_data->_IO_write_ptr
+		     - fp->_wide_data->_IO_write_base);
+	      break;
+	    default: /* case _IO_seek_end: */
+	      base = cur_size;
+	      break;
+	    }
+	  _IO_ssize_t maxval = SSIZE_MAX/sizeof (wchar_t) - base;
+	  if (offset < -base || offset > maxval)
+	    {
+	      __set_errno (EINVAL);
+	      return EOF;
+	    }
+	  base += offset;
+	  if (base > cur_size
+	      && enlarge_userbuf (fp, base, 0) != 0)
+	    return EOF;
+	  fp->_wide_data->_IO_write_ptr = (fp->_wide_data->_IO_write_base
+					   + base);
+	  new_pos = base;
+	}
+    }
+  return new_pos;
+}
+
+_IO_wint_t
+_IO_wstr_pbackfail (_IO_FILE *fp, _IO_wint_t c)
+{
+  if ((fp->_flags & _IO_NO_WRITES) && c != WEOF)
+    return WEOF;
+  return _IO_wdefault_pbackfail (fp, c);
+}
+
+void
+_IO_wstr_finish (_IO_FILE *fp, int dummy)
+{
+  if (fp->_wide_data->_IO_buf_base && !(fp->_flags2 & _IO_FLAGS2_USER_WBUF))
+    (((_IO_strfile *) fp)->_s._free_buffer) (fp->_wide_data->_IO_buf_base);
+  fp->_wide_data->_IO_buf_base = NULL;
+
+  _IO_wdefault_finish (fp, 0);
+}
+
+const struct _IO_jump_t _IO_wstr_jumps libio_vtable =
+{
+  JUMP_INIT_DUMMY,
+  JUMP_INIT(finish, _IO_wstr_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) _IO_wdefault_uflow),
+  JUMP_INIT(pbackfail, (_IO_pbackfail_t) _IO_wstr_pbackfail),
+  JUMP_INIT(xsputn, _IO_wdefault_xsputn),
+  JUMP_INIT(xsgetn, _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_default_sync),
+  JUMP_INIT(doallocate, _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)
+};