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, 270 insertions, 0 deletions

diff --git a/REORG.TODO/wcsmbs/wcsmbsload.c b/REORG.TODO/wcsmbs/wcsmbsload.c
new file mode 100644
index 0000000000..656cc0a8e8
--- /dev/null
+++ b/REORG.TODO/wcsmbs/wcsmbsload.c
@@ -0,0 +1,270 @@
+/* Copyright (C) 1998-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+   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 <ctype.h>
+#include <langinfo.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <locale/localeinfo.h>
+#include <wcsmbsload.h>
+#include <libc-lock.h>
+
+
+/* These are the descriptions for the default conversion functions.  */
+static const struct __gconv_step to_wc =
+{
+  .__shlib_handle = NULL,
+  .__modname = NULL,
+  .__counter = INT_MAX,
+  .__from_name = (char *) "ANSI_X3.4-1968//TRANSLIT",
+  .__to_name = (char *) "INTERNAL",
+  .__fct = __gconv_transform_ascii_internal,
+  .__btowc_fct = __gconv_btwoc_ascii,
+  .__init_fct = NULL,
+  .__end_fct = NULL,
+  .__min_needed_from = 1,
+  .__max_needed_from = 1,
+  .__min_needed_to = 4,
+  .__max_needed_to = 4,
+  .__stateful = 0,
+  .__data = NULL
+};
+
+static const struct __gconv_step to_mb =
+{
+  .__shlib_handle = NULL,
+  .__modname = NULL,
+  .__counter = INT_MAX,
+  .__from_name = (char *) "INTERNAL",
+  .__to_name = (char *) "ANSI_X3.4-1968//TRANSLIT",
+  .__fct = __gconv_transform_internal_ascii,
+  .__btowc_fct = NULL,
+  .__init_fct = NULL,
+  .__end_fct = NULL,
+  .__min_needed_from = 4,
+  .__max_needed_from = 4,
+  .__min_needed_to = 1,
+  .__max_needed_to = 1,
+  .__stateful = 0,
+  .__data = NULL
+};
+
+
+/* For the default locale we only have to handle ANSI_X3.4-1968.  */
+const struct gconv_fcts __wcsmbs_gconv_fcts_c =
+{
+  .towc = (struct __gconv_step *) &to_wc,
+  .towc_nsteps = 1,
+  .tomb = (struct __gconv_step *) &to_mb,
+  .tomb_nsteps = 1,
+};
+
+
+attribute_hidden
+struct __gconv_step *
+__wcsmbs_getfct (const char *to, const char *from, size_t *nstepsp)
+{
+  size_t nsteps;
+  struct __gconv_step *result;
+#if 0
+  size_t nstateful;
+  size_t cnt;
+#endif
+
+  if (__gconv_find_transform (to, from, &result, &nsteps, 0) != __GCONV_OK)
+    /* Loading the conversion step is not possible.  */
+    return NULL;
+
+  /* Maybe it is someday necessary to allow more than one step.
+     Currently this is not the case since the conversions handled here
+     are from and to INTERNAL and there always is a converted for
+     that.  It the directly following code is enabled the libio
+     functions will have to allocate appropriate __gconv_step_data
+     elements instead of only one.  */
+#if 0
+  /* Count the number of stateful conversions.  Since we will only
+     have one 'mbstate_t' object available we can only deal with one
+     stateful conversion.  */
+  nstateful = 0;
+  for (cnt = 0; cnt < nsteps; ++cnt)
+    if (result[cnt].__stateful)
+      ++nstateful;
+  if (nstateful > 1)
+#else
+  if (nsteps > 1)
+#endif
+    {
+      /* We cannot handle this case.  */
+      __gconv_close_transform (result, nsteps);
+      result = NULL;
+    }
+  else
+    *nstepsp = nsteps;
+
+  return result;
+}
+
+
+/* Extract from the given locale name the character set portion.  Since
+   only the XPG form of the name includes this information we don't have
+   to take care for the CEN form.  */
+#define extract_charset_name(str) \
+  ({									      \
+    const char *cp = str;						      \
+    char *result = NULL;						      \
+									      \
+    cp += strcspn (cp, "@.+,");						      \
+    if (*cp == '.')							      \
+      {									      \
+	const char *endp = ++cp;					      \
+	while (*endp != '\0' && *endp != '@')				      \
+	  ++endp;							      \
+	if (endp != cp)							      \
+	  result = strndupa (cp, endp - cp);				      \
+      }									      \
+    result;								      \
+  })
+
+
+/* Some of the functions here must not be used while setlocale is called.  */
+__libc_rwlock_define (extern, __libc_setlocale_lock attribute_hidden)
+
+/* Load conversion functions for the currently selected locale.  */
+void
+internal_function
+__wcsmbs_load_conv (struct __locale_data *new_category)
+{
+  /* Acquire the lock.  */
+  __libc_rwlock_wrlock (__libc_setlocale_lock);
+
+  /* We should repeat the test since while we waited some other thread
+     might have run this function.  */
+  if (__glibc_likely (new_category->private.ctype == NULL))
+    {
+      /* We must find the real functions.  */
+      const char *charset_name;
+      const char *complete_name;
+      struct gconv_fcts *new_fcts;
+      int use_translit;
+
+      /* Allocate the gconv_fcts structure.  */
+      new_fcts = calloc (1, sizeof *new_fcts);
+      if (new_fcts == NULL)
+	goto failed;
+
+      /* Get name of charset of the locale.  */
+      charset_name = new_category->values[_NL_ITEM_INDEX(CODESET)].string;
+
+      /* Does the user want transliteration?  */
+      use_translit = new_category->use_translit;
+
+      /* Normalize the name and add the slashes necessary for a
+	 complete lookup.  */
+      complete_name = norm_add_slashes (charset_name,
+					use_translit ? "TRANSLIT" : "");
+
+      /* It is not necessary to use transliteration in this direction
+	 since the internal character set is supposed to be able to
+	 represent all others.  */
+      new_fcts->towc = __wcsmbs_getfct ("INTERNAL", complete_name,
+					&new_fcts->towc_nsteps);
+      if (new_fcts->towc != NULL)
+	new_fcts->tomb = __wcsmbs_getfct (complete_name, "INTERNAL",
+					  &new_fcts->tomb_nsteps);
+
+      /* If any of the conversion functions is not available we don't
+	 use any since this would mean we cannot convert back and
+	 forth.  NB: NEW_FCTS was allocated with calloc.  */
+      if (new_fcts->tomb == NULL)
+	{
+	  if (new_fcts->towc != NULL)
+	    __gconv_close_transform (new_fcts->towc, new_fcts->towc_nsteps);
+
+	  free (new_fcts);
+
+	failed:
+	  new_category->private.ctype = &__wcsmbs_gconv_fcts_c;
+	}
+      else
+	{
+	  new_category->private.ctype = new_fcts;
+	  new_category->private.cleanup = &_nl_cleanup_ctype;
+	}
+    }
+
+  __libc_rwlock_unlock (__libc_setlocale_lock);
+}
+
+
+/* Clone the current conversion function set.  */
+void
+internal_function
+__wcsmbs_clone_conv (struct gconv_fcts *copy)
+{
+  const struct gconv_fcts *orig;
+
+  orig = get_gconv_fcts (_NL_CURRENT_DATA (LC_CTYPE));
+
+  /* Copy the data.  */
+  *copy = *orig;
+
+  /* Now increment the usage counters.
+     Note: This assumes copy->*_nsteps == 1.  */
+  if (copy->towc->__shlib_handle != NULL)
+    ++copy->towc->__counter;
+  if (copy->tomb->__shlib_handle != NULL)
+    ++copy->tomb->__counter;
+}
+
+
+/* Get converters for named charset.  */
+int
+internal_function
+__wcsmbs_named_conv (struct gconv_fcts *copy, const char *name)
+{
+  copy->towc = __wcsmbs_getfct ("INTERNAL", name, &copy->towc_nsteps);
+  if (copy->towc == NULL)
+    return 1;
+
+  copy->tomb = __wcsmbs_getfct (name, "INTERNAL", &copy->tomb_nsteps);
+  if (copy->tomb == NULL)
+    {
+      __gconv_close_transform (copy->towc, copy->towc_nsteps);
+      return 1;
+    }
+
+  return 0;
+}
+
+void internal_function
+_nl_cleanup_ctype (struct __locale_data *locale)
+{
+  const struct gconv_fcts *const data = locale->private.ctype;
+  if (data != NULL)
+    {
+      locale->private.ctype = NULL;
+      locale->private.cleanup = NULL;
+
+      /* Free the old conversions.  */
+      __gconv_close_transform (data->tomb, data->tomb_nsteps);
+      __gconv_close_transform (data->towc, data->towc_nsteps);
+      free ((char *) data);
+    }
+}