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, 148 insertions, 0 deletions

diff --git a/REORG.TODO/wcsmbs/wcsnrtombs.c b/REORG.TODO/wcsmbs/wcsnrtombs.c
new file mode 100644
index 0000000000..9c331dc0e6
--- /dev/null
+++ b/REORG.TODO/wcsmbs/wcsnrtombs.c
@@ -0,0 +1,148 @@
+/* Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@gnu.org>, 1996.
+
+   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/>.  */
+
+#include <assert.h>
+#include <dlfcn.h>
+#include <errno.h>
+#include <gconv.h>
+#include <wchar.h>
+#include <wcsmbsload.h>
+
+#include <sysdep.h>
+
+#ifndef EILSEQ
+# define EILSEQ EINVAL
+#endif
+
+
+/* This is the private state used if PS is NULL.  */
+static mbstate_t state;
+
+/* This is a non-standard function but it is very useful in the
+   implementation of stdio because we have to deal with unterminated
+   buffers.  At most NWC wide character will be converted.  */
+size_t
+__wcsnrtombs (char *dst, const wchar_t **src, size_t nwc, size_t len,
+	      mbstate_t *ps)
+{
+  struct __gconv_step_data data;
+  const wchar_t *srcend;
+  int status;
+  size_t result;
+  struct __gconv_step *tomb;
+  const struct gconv_fcts *fcts;
+
+  /* Tell where we want the result.  */
+  data.__invocation_counter = 0;
+  data.__internal_use = 1;
+  data.__flags = __GCONV_IS_LAST;
+  data.__statep = ps ?: &state;
+
+  if (nwc == 0)
+    return 0;
+  srcend = *src + __wcsnlen (*src, nwc - 1) + 1;
+
+  /* Get the conversion functions.  */
+  fcts = get_gconv_fcts (_NL_CURRENT_DATA (LC_CTYPE));
+
+  /* Get the structure with the function pointers.  */
+  tomb = fcts->tomb;
+  __gconv_fct fct = tomb->__fct;
+#ifdef PTR_DEMANGLE
+  if (tomb->__shlib_handle != NULL)
+    PTR_DEMANGLE (fct);
+#endif
+
+  /* We have to handle DST == NULL special.  */
+  if (dst == NULL)
+    {
+      mbstate_t temp_state;
+      unsigned char buf[256];		/* Just an arbitrary value.  */
+      const unsigned char *inbuf = (const unsigned char *) *src;
+      size_t dummy;
+
+      temp_state = *data.__statep;
+      data.__statep = &temp_state;
+
+      result = 0;
+      data.__outbufend = buf + sizeof (buf);
+
+      do
+	{
+	  data.__outbuf = buf;
+
+	  status = DL_CALL_FCT (fct, (tomb, &data, &inbuf,
+				      (const unsigned char *) srcend, NULL,
+				      &dummy, 0, 1));
+
+	  /* Count the number of bytes.  */
+	  result += data.__outbuf - buf;
+	}
+      while (status == __GCONV_FULL_OUTPUT);
+
+      if ((status == __GCONV_OK || status == __GCONV_EMPTY_INPUT)
+	  && data.__outbuf[-1] == '\0')
+	/* Don't count the NUL character in.  */
+	--result;
+    }
+  else
+    {
+      /* This code is based on the safe assumption that all internal
+	 multi-byte encodings use the NUL byte only to mark the end
+	 of the string.  */
+      size_t dummy;
+
+      data.__outbuf = (unsigned char *) dst;
+      data.__outbufend = (unsigned char *) dst + len;
+
+      status = DL_CALL_FCT (fct, (tomb, &data, (const unsigned char **) src,
+				  (const unsigned char *) srcend, NULL,
+				  &dummy, 0, 1));
+
+      /* Count the number of bytes.  */
+      result = data.__outbuf - (unsigned char *) dst;
+
+      /* We have to determine whether the last character converted
+	 is the NUL character.  */
+      if ((status == __GCONV_OK || status == __GCONV_EMPTY_INPUT)
+	  && data.__outbuf[-1] == '\0')
+	{
+	  assert (data.__outbuf != (unsigned char *) dst);
+	  assert (__mbsinit (data.__statep));
+	  *src = NULL;
+	  --result;
+	}
+    }
+
+  /* There must not be any problems with the conversion but illegal input
+     characters.  */
+  assert (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT
+	  || status == __GCONV_ILLEGAL_INPUT
+	  || status == __GCONV_INCOMPLETE_INPUT
+	  || status == __GCONV_FULL_OUTPUT);
+
+  if (status != __GCONV_OK && status != __GCONV_FULL_OUTPUT
+      && status != __GCONV_EMPTY_INPUT)
+    {
+      result = (size_t) -1;
+      __set_errno (EILSEQ);
+    }
+
+  return result;
+}
+weak_alias (__wcsnrtombs, wcsnrtombs)