intl/log.c

   1 /* Log file output.
   2    Copyright (C) 2003 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify it
   5    under the terms of the GNU Library General Public License as published
   6    by the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with this program; if not, write to the Free Software
  16    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  17    USA.  */
  18
  19 /* Written by Bruno Haible <bruno@clisp.org>.  */
  20
  21 #ifdef HAVE_CONFIG_H
  22 # include <config.h>
  23 #endif
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28
  29 /* Print an ASCII string with quotes and escape sequences where needed.  */
  30 static void
  31 print_escaped (FILE *stream, const char *str)
  32 {
  33   putc ('"', stream);
  34   for (; *str != '\0'; str++)
  35     if (*str == '\n')
  36       {
  37         fputs ("\\n\"", stream);
  38         if (str[1] == '\0')
  39           return;
  40         fputs ("\n\"", stream);
  41       }
  42     else
  43       {
  44         if (*str == '"' || *str == '\\')
  45           putc ('\\', stream);
  46         putc (*str, stream);
  47       }
  48   putc ('"', stream);
  49 }
  50
  51 /* Add to the log file an entry denoting a failed translation.  */
  52 void
  53 _nl_log_untranslated (const char *logfilename, const char *domainname,
  54                       const char *msgid1, const char *msgid2, int plural)
  55 {
  56   static char *last_logfilename = NULL;
  57   static FILE *last_logfile = NULL;
  58   FILE *logfile;
  59
  60   /* Can we reuse the last opened logfile?  */
  61   if (last_logfilename == NULL || strcmp (logfilename, last_logfilename) != 0)
  62     {
  63       /* Close the last used logfile.  */
  64       if (last_logfilename != NULL)
  65         {
  66           if (last_logfile != NULL)
  67             {
  68               fclose (last_logfile);
  69               last_logfile = NULL;
  70             }
  71           free (last_logfilename);
  72           last_logfilename = NULL;
  73         }
  74       /* Open the logfile.  */
  75       last_logfilename = (char *) malloc (strlen (logfilename) + 1);
  76       if (last_logfilename == NULL)
  77         return;
  78       strcpy (last_logfilename, logfilename);
  79       last_logfile = fopen (logfilename, "a");
  80       if (last_logfile == NULL)
  81         return;
  82     }
  83   logfile = last_logfile;
  84
  85   fprintf (logfile, "domain ");
  86   print_escaped (logfile, domainname);
  87   fprintf (logfile, "\nmsgid ");
  88   print_escaped (logfile, msgid1);
  89   if (plural)
  90     {
  91       fprintf (logfile, "\nmsgid_plural ");
  92       print_escaped (logfile, msgid2);
  93       fprintf (logfile, "\nmsgstr[0] \"\"\n");
  94     }
  95   else
  96     fprintf (logfile, "\nmsgstr \"\"\n");
  97   putc ('\n', logfile);
  98 }