flower/warn.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 1997--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
   5
   6   LilyPond is free software: you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation, either version 3 of the License, or
   9   (at your option) any later version.
  10
  11   LilyPond is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "warn.hh"
  21
  22 #include <cstdlib>
  23 #include <cstdio>
  24
  25 #include "international.hh"
  26
  27 using namespace std;
  28
  29 /* Is progress indication at NEWLINE?  */
  30 static bool progress_newline = true;
  31
  32 /* Display user information that is not a full message.  */
  33 void
  34 progress_indication (string s)
  35 {
  36   /* Test if all silly progress_indication ("\n") can be dropped now.  */
  37   if (s == "\n")
  38     return;
  39
  40   fputs (s.c_str (), stderr);
  41   fflush (stderr);
  42   if (s.length ())
  43     progress_newline = s[s.length () - 1] == '\n';
  44 }
  45
  46 /* Display a single user message.  Always starts on a new line.  */
  47 void
  48 message (string s)
  49 {
  50   if (!progress_newline)
  51     fputc ('\n', stderr);
  52   progress_indication (s);
  53 }
  54
  55 /* Display a warning message.  Always starts on a new line.  */
  56 void
  57 warning (string s)
  58 {
  59   message (_f ("warning: %s", s.c_str ()) + "\n");
  60 }
  61
  62 void
  63 non_fatal_error (string s)
  64 {
  65   message (_f ("error: %s", s.c_str ()) + "\n");
  66 }
  67
  68 /* Display an error message.  Always starts on a new line.  */
  69 void
  70 error (string s)
  71 {
  72   non_fatal_error (s);
  73   exit (1);
  74 }
  75
  76 void
  77 programming_error (string s)
  78 {
  79   message (_f ("programming error: %s", s) + "\n");
  80   message (_ ("continuing, cross fingers") + "\n");
  81 }
  82