Line data    Source code

       1             : /* Locale-specific memory transformation
       2             : 
       3             :    Copyright (C) 2006 Free Software Foundation, Inc.
       4             : 
       5             :    This program is free software: you can redistribute it and/or modify
       6             :    it under the terms of the GNU General Public License as published by
       7             :    the Free Software Foundation, either version 3 of the License, or
       8             :    (at your option) any later version.
       9             : 
      10             :    This program is distributed in the hope that it will be useful,
      11             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      12             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      13             :    GNU General Public License for more details.
      14             : 
      15             :    You should have received a copy of the GNU General Public License
      16             :    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
      17             : 
      18             : /* Written by Paul Eggert <eggert@cs.ucla.edu>.  */
      19             : 
      20             : #include <config.h>
      21             : 
      22             : #include "xmemxfrm.h"
      23             : 
      24             : #include <errno.h>
      25             : #include <stdlib.h>
      26             : 
      27             : #include "gettext.h"
      28             : #define _(msgid) gettext (msgid)
      29             : 
      30             : #include "error.h"
      31             : #include "exitfail.h"
      32             : #include "memxfrm.h"
      33             : #include "quotearg.h"
      34             : 
      35             : /* Store into DEST (of size DESTSIZE) the text in SRC (of size
      36             :    SRCSIZE) transformed so that the result of memcmp on two
      37             :    transformed texts (with ties going to the longer text) is the same
      38             :    as the result of memcoll on the two texts before their
      39             :    transformation.  Perhaps temporarily modify the byte after SRC, but
      40             :    restore its original contents before returning.
      41             : 
      42             :    Return the size of the resulting text.  DEST contains an
      43             :    indeterminate value if the resulting size is greater than DESTSIZE.
      44             :    Report an error and exit if there is an error.  */
      45             : 
      46             : size_t
      47           0 : xmemxfrm (char *restrict dest, size_t destsize,
      48             :           char *restrict src, size_t srcsize)
      49             : {
      50           0 :   size_t translated_size = memxfrm (dest, destsize, src, srcsize);
      51             : 
      52           0 :   if (errno)
      53             :     {
      54           0 :       error (0, errno, _("string transformation failed"));
      55           0 :       error (0, 0, _("Set LC_ALL='C' to work around the problem."));
      56           0 :       error (exit_failure, 0,
      57             :              _("The untransformed string was %s."),
      58             :              quotearg_n_style_mem (0, locale_quoting_style, src, srcsize));
      59             :     }
      60             : 
      61           0 :   return translated_size;
      62             : }