research.m1stereo.tv/gitweb/ - melted/blob - src/modules/kino/error.cc

   1 /*
   2 * error.cc Error handling
   3 * Copyright (C) 2000 Arne Schirmacher <arne@schirmacher.de>
   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 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, write to the Free Software Foundation,
  17 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18 */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include <config.h>
  22 #endif
  23
  24 // C++ includes
  25
  26 #include <string>
  27 #include <iostream>
  28 #include <sstream>
  29 #include <iomanip>
  30
  31 using std::ostringstream;
  32 using std::string;
  33 using std::endl;
  34 using std::ends;
  35 using std::cerr;
  36
  37 // C includes
  38
  39 #include <errno.h>
  40 #include <string.h>
  41
  42 // local includes
  43
  44 #include "error.h"
  45
  46 void real_fail_neg( int eval, const char *eval_str, const char *func, const char *file, int line )
  47 {
  48         if ( eval < 0 )
  49         {
  50                 string exc;
  51                 ostringstream sb;
  52
  53                 sb << file << ":" << line << ": In function \"" << func << "\": \"" << eval_str << "\" evaluated to " << eval;
  54                 if ( errno != 0 )
  55                         sb << endl << file << ":" << line << ": errno: " << errno << " (" << strerror( errno ) << ")";
  56                 sb << ends;
  57                 exc = sb.str();
  58                 cerr << exc << endl;
  59                 throw exc;
  60         }
  61 }
  62
  63
  64 /** error handler for NULL result codes
  65
  66     Whenever this is called with a NULL argument, it will throw an
  67     exception. Typically used with functions like malloc() and new().
  68
  69 */
  70
  71 void real_fail_null( const void *eval, const char *eval_str, const char *func, const char *file, int line )
  72 {
  73         if ( eval == NULL )
  74         {
  75
  76                 string exc;
  77                 ostringstream sb;
  78
  79                 sb << file << ":" << line << ": In function \"" << func << "\": " << eval_str << " is NULL" << ends;
  80                 exc = sb.str();
  81                 cerr << exc << endl;
  82                 throw exc;
  83         }
  84 }
  85
  86
  87 void real_fail_if( bool eval, const char *eval_str, const char *func, const char *file, int line )
  88 {
  89         if ( eval == true )
  90         {
  91
  92                 string exc;
  93                 ostringstream sb;
  94
  95                 sb << file << ":" << line << ": In function \"" << func << "\": condition \"" << eval_str << "\" is true";
  96                 if ( errno != 0 )
  97                         sb << endl << file << ":" << line << ": errno: " << errno << " (" << strerror( errno ) << ")";
  98                 sb << ends;
  99                 exc = sb.str();
 100                 cerr << exc << endl;
 101                 throw exc;
 102         }
 103 }