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      1 /* Multiline error-reporting functions.
      2    Copyright (C) 2001-2003, 2006 Free Software Foundation, Inc.
      3    Written by Bruno Haible <haible (at) clisp.cons.org>, 2001.
      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 2, or (at your option)
      8    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, write to the Free Software Foundation,
     17    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
     18 
     19 
     20 #include <config.h>
     21 
     22 /* Specification.  */
     23 #include "xerror.h"
     24 
     25 #include <stdio.h>
     26 #include <stdlib.h>
     27 #include <string.h>
     28 
     29 #include "error.h"
     30 #include "progname.h"
     31 #include "error-progname.h"
     32 #include "mbswidth.h"
     33 
     34 /* Emit a multiline warning to stderr, consisting of MESSAGE, with the
     35    first line prefixed with PREFIX and the remaining lines prefixed with
     36    the same amount of spaces.  Reuse the spaces of the previous call if
     37    PREFIX is NULL.  Free the PREFIX and MESSAGE when done.  */
     38 void
     39 multiline_warning (char *prefix, char *message)
     40 {
     41   static int width;
     42   const char *cp;
     43   int i;
     44 
     45   fflush (stdout);
     46 
     47   cp = message;
     48 
     49   if (prefix != NULL)
     50     {
     51       width = 0;
     52       if (error_with_progname)
     53 	{
     54 	  fprintf (stderr, "%s: ", program_name);
     55 	  width += mbswidth (program_name, 0) + 2;
     56 	}
     57       fputs (prefix, stderr);
     58       width += mbswidth (prefix, 0);
     59       free (prefix);
     60       goto after_indent;
     61     }
     62 
     63   for (;;)
     64     {
     65       const char *np;
     66 
     67       for (i = width; i > 0; i--)
     68 	putc (' ', stderr);
     69 
     70     after_indent:
     71       np = strchr (cp, '\n');
     72 
     73       if (np == NULL || np[1] == '\0')
     74 	{
     75 	  fputs (cp, stderr);
     76 	  break;
     77 	}
     78 
     79       np++;
     80       fwrite (cp, 1, np - cp, stderr);
     81       cp = np;
     82     }
     83 
     84   free (message);
     85 }
     86 
     87 /* Emit a multiline error to stderr, consisting of MESSAGE, with the
     88    first line prefixed with PREFIX and the remaining lines prefixed with
     89    the same amount of spaces.  Reuse the spaces of the previous call if
     90    PREFIX is NULL.  Free the PREFIX and MESSAGE when done.  */
     91 void
     92 multiline_error (char *prefix, char *message)
     93 {
     94   if (prefix != NULL)
     95     ++error_message_count;
     96   multiline_warning (prefix, message);
     97 }
     98