Update copyright dates with scripts/update-copyrights.

[thirdparty/glibc.git] / wcsmbs / wctob.c

diff --git a/wcsmbs/wctob.c b/wcsmbs/wctob.c
index c27bd6baba4b52e7ee28bccaa8ff2c3a8e0f4927..035f045ea037406f2eec8f241fc4e650cf38943b 100644 (file)
--- a/wcsmbs/wctob.c
+++ b/wcsmbs/wctob.c
@@ -1,34 +1,83 @@
-/* Copyright (C) 1996 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
-Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>
+/* Copyright (C) 1996-2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996.
 
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   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
-Library General Public License for more details.
+   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 Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
+   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 <dlfcn.h>
+#include <gconv.h>
 #include <stdio.h>
+#include <string.h>
 #include <wchar.h>
+#include <wcsmbsload.h>
+
+#include <sysdep.h>
 
 
 int
 wctob (c)
      wint_t c;
 {
-  /*************************************************************\
-  |* This is no complete implementation.  While the multi-byte *|
-  |* character handling is not finished this will do.         *|
-  \*************************************************************/
+  unsigned char buf[MB_LEN_MAX];
+  struct __gconv_step_data data;
+  wchar_t inbuf[1];
+  wchar_t *inptr = inbuf;
+  size_t dummy;
+  int status;
+  const struct gconv_fcts *fcts;
+
+  if (c == WEOF)
+    return EOF;
+
+  /* We know that only ASCII compatible encodings are used for the
+     locale and that the wide character encoding is ISO 10646.  */
+  if (c >= L'\0' && c <= L'\x7f')
+    return (int) c;
+
+  /* Tell where we want the result.  */
+  data.__outbuf = buf;
+  data.__outbufend = buf + MB_LEN_MAX;
+  data.__invocation_counter = 0;
+  data.__internal_use = 1;
+  data.__flags = __GCONV_IS_LAST;
+  data.__statep = &data.__state;
+
+  /* Make sure we start in the initial state.  */
+  memset (&data.__state, '\0', sizeof (mbstate_t));
+
+  /* Get the conversion functions.  */
+  fcts = get_gconv_fcts (_NL_CURRENT_DATA (LC_CTYPE));
+
+  /* Create the input string.  */
+  inbuf[0] = c;
+
+  const unsigned char *argptr = (const unsigned char *) inptr;
+  __gconv_fct fct = fcts->tomb->__fct;
+#ifdef PTR_DEMANGLE
+  if (fcts->tomb->__shlib_handle != NULL)
+    PTR_DEMANGLE (fct);
+#endif
+  status = DL_CALL_FCT (fct,
+                       (fcts->tomb, &data, &argptr,
+                        argptr + sizeof (inbuf[0]), NULL, &dummy, 0, 1));
+
+  /* The conversion failed or the output is too long.  */
+  if ((status != __GCONV_OK && status != __GCONV_FULL_OUTPUT
+       && status != __GCONV_EMPTY_INPUT)
+      || data.__outbuf != (unsigned char *) (buf + 1))
+    return EOF;
 
-  return (c & ~0xff) == 0 ? c : EOF;
+  return buf[0];
 }