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1 // error.cc -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1992, 1993, 1994 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include "config.h" |
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26 #endif |
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27 |
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28 #include <stdio.h> |
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29 #include <stdlib.h> |
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30 #include <stdarg.h> |
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31 |
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32 #include "error.h" |
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33 #include "pager.h" |
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34 |
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35 // Current error state. |
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36 int error_state; |
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37 |
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38 static void |
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39 verror (const char *name, const char *fmt, va_list args) |
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40 { |
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41 if (name != (char *) NULL) |
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42 fprintf (stderr, "%s: ", name); |
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43 |
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44 vfprintf (stderr, fmt, args); |
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45 fprintf (stderr, "\n"); |
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46 fflush (stderr); |
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47 } |
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48 |
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49 void |
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50 message (const char *name, const char *fmt, ...) |
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51 { |
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52 va_list args; |
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53 va_start (args, fmt); |
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54 verror (name, fmt, args); |
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55 va_end (args); |
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56 } |
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57 |
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58 void |
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59 usage (const char *fmt, ...) |
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60 { |
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61 va_list args; |
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62 va_start (args, fmt); |
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63 verror ("usage", fmt, args); |
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64 va_end (args); |
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65 } |
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66 |
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67 void |
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68 warning (const char *fmt, ...) |
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69 { |
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70 va_list args; |
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71 va_start (args, fmt); |
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72 verror ("warning", fmt, args); |
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73 va_end (args); |
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74 } |
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75 |
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76 void |
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77 error (const char *fmt, ...) |
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78 { |
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79 if (error_state == -2) |
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80 return; |
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81 |
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82 if (! error_state) |
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83 error_state = 1; |
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84 |
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85 flush_output_to_pager (); |
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86 |
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87 va_list args; |
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88 va_start (args, fmt); |
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89 |
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90 int len; |
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91 if (fmt && fmt[(len = strlen (fmt) - 1)] == '\n') |
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92 { |
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93 error_state = -2; |
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94 char *tmp_fmt = strsave (fmt); |
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95 tmp_fmt[len - 1] = '\0'; |
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96 verror ("error", tmp_fmt, args); |
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97 } |
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98 else |
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99 verror ("error", fmt, args); |
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100 |
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101 va_end (args); |
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102 } |
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103 |
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104 void |
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105 panic (const char *fmt, ...) |
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106 { |
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107 flush_output_to_pager (); |
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108 |
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109 va_list args; |
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110 va_start (args, fmt); |
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111 verror ("panic", fmt, args); |
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112 va_end (args); |
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113 abort (); |
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114 exit (1); |
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115 } |
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116 |
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117 /* |
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118 ;;; Local Variables: *** |
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119 ;;; mode: C++ *** |
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120 ;;; page-delimiter: "^/\\*" *** |
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121 ;;; End: *** |
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122 */ |
