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, 208 insertions, 0 deletions

diff --git a/REORG.TODO/iconv/gconv_open.c b/REORG.TODO/iconv/gconv_open.c
new file mode 100644
index 0000000000..ff4fd121eb
--- /dev/null
+++ b/REORG.TODO/iconv/gconv_open.c
@@ -0,0 +1,208 @@
+/* Find matching transformation algorithms and initialize steps.
+   Copyright (C) 1997-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   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 <errno.h>
+#include <locale.h>
+#include "../locale/localeinfo.h"
+#include <stdlib.h>
+#include <string.h>
+
+#include <gconv_int.h>
+
+
+int
+internal_function
+__gconv_open (const char *toset, const char *fromset, __gconv_t *handle,
+	      int flags)
+{
+  struct __gconv_step *steps;
+  size_t nsteps;
+  __gconv_t result = NULL;
+  size_t cnt = 0;
+  int res;
+  int conv_flags = 0;
+  const char *errhand;
+  const char *ignore;
+  bool translit = false;
+
+  /* Find out whether any error handling method is specified.  */
+  errhand = strchr (toset, '/');
+  if (errhand != NULL)
+    errhand = strchr (errhand + 1, '/');
+  if (__glibc_likely (errhand != NULL))
+    {
+      if (*++errhand == '\0')
+	errhand = NULL;
+      else
+	{
+	  /* Make copy without the error handling description.  */
+	  char *newtoset = (char *) alloca (errhand - toset + 1);
+	  char *tok;
+	  char *ptr = NULL /* Work around a bogus warning */;
+
+	  newtoset[errhand - toset] = '\0';
+	  toset = memcpy (newtoset, toset, errhand - toset);
+
+	  /* Find the appropriate transliteration handlers.  */
+	  tok = strdupa (errhand);
+
+	  tok = __strtok_r (tok, ",", &ptr);
+	  while (tok != NULL)
+	    {
+	      if (__strcasecmp_l (tok, "TRANSLIT", _nl_C_locobj_ptr) == 0)
+		translit = true;
+	      else if (__strcasecmp_l (tok, "IGNORE", _nl_C_locobj_ptr) == 0)
+		/* Set the flag to ignore all errors.  */
+		conv_flags |= __GCONV_IGNORE_ERRORS;
+
+	      tok = __strtok_r (NULL, ",", &ptr);
+	    }
+	}
+    }
+
+  /* For the source character set we ignore the error handler specification.
+     XXX Is this really always the best?  */
+  ignore = strchr (fromset, '/');
+  if (ignore != NULL && (ignore = strchr (ignore + 1, '/')) != NULL
+      && *++ignore != '\0')
+    {
+      char *newfromset = (char *) alloca (ignore - fromset + 1);
+
+      newfromset[ignore - fromset] = '\0';
+      fromset = memcpy (newfromset, fromset, ignore - fromset);
+    }
+
+  /* If the string is empty define this to mean the charset of the
+     currently selected locale.  */
+  if (strcmp (toset, "//") == 0)
+    {
+      const char *codeset = _NL_CURRENT (LC_CTYPE, CODESET);
+      size_t len = strlen (codeset);
+      char *dest;
+      toset = dest = (char *) alloca (len + 3);
+      memcpy (__mempcpy (dest, codeset, len), "//", 3);
+    }
+  if (strcmp (fromset, "//") == 0)
+    {
+      const char *codeset = _NL_CURRENT (LC_CTYPE, CODESET);
+      size_t len = strlen (codeset);
+      char *dest;
+      fromset = dest = (char *) alloca (len + 3);
+      memcpy (__mempcpy (dest, codeset, len), "//", 3);
+    }
+
+  res = __gconv_find_transform (toset, fromset, &steps, &nsteps, flags);
+  if (res == __GCONV_OK)
+    {
+      /* Allocate room for handle.  */
+      result = (__gconv_t) malloc (sizeof (struct __gconv_info)
+				   + (nsteps
+				      * sizeof (struct __gconv_step_data)));
+      if (result == NULL)
+	res = __GCONV_NOMEM;
+      else
+	{
+	  /* Remember the list of steps.  */
+	  result->__steps = steps;
+	  result->__nsteps = nsteps;
+
+	  /* Clear the array for the step data.  */
+	  memset (result->__data, '\0',
+		  nsteps * sizeof (struct __gconv_step_data));
+
+	  /* Call all initialization functions for the transformation
+	     step implementations.  */
+	  for (cnt = 0; cnt < nsteps; ++cnt)
+	    {
+	      size_t size;
+
+	      /* Would have to be done if we would not clear the whole
+                 array above.  */
+#if 0
+	      /* Reset the counter.  */
+	      result->__data[cnt].__invocation_counter = 0;
+
+	      /* It's a regular use.  */
+	      result->__data[cnt].__internal_use = 0;
+#endif
+
+	      /* We use the `mbstate_t' member in DATA.  */
+	      result->__data[cnt].__statep = &result->__data[cnt].__state;
+
+	      /* The builtin transliteration handling only
+		 supports the internal encoding.  */
+	      if (translit
+		  && __strcasecmp_l (steps[cnt].__from_name,
+				     "INTERNAL", _nl_C_locobj_ptr) == 0)
+		conv_flags |= __GCONV_TRANSLIT;
+
+	      /* If this is the last step we must not allocate an
+		 output buffer.  */
+	      if (cnt < nsteps - 1)
+		{
+		  result->__data[cnt].__flags = conv_flags;
+
+		  /* Allocate the buffer.  */
+		  size = (GCONV_NCHAR_GOAL * steps[cnt].__max_needed_to);
+
+		  result->__data[cnt].__outbuf = malloc (size);
+		  if (result->__data[cnt].__outbuf == NULL)
+		    {
+		      res = __GCONV_NOMEM;
+		      goto bail;
+		    }
+
+		  result->__data[cnt].__outbufend =
+		    result->__data[cnt].__outbuf + size;
+		}
+	      else
+		{
+		  /* Handle the last entry.  */
+		  result->__data[cnt].__flags = conv_flags | __GCONV_IS_LAST;
+
+		  break;
+		}
+	    }
+	}
+
+      if (res != __GCONV_OK)
+	{
+	  /* Something went wrong.  Free all the resources.  */
+	  int serrno;
+	bail:
+	  serrno = errno;
+
+	  if (result != NULL)
+	    {
+	      while (cnt-- > 0)
+		free (result->__data[cnt].__outbuf);
+
+	      free (result);
+	      result = NULL;
+	    }
+
+	  __gconv_close_transform (steps, nsteps);
+
+	  __set_errno (serrno);
+	}
+    }
+
+  *handle = result;
+  return res;
+}