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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 "utils.h" |
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33 #include "error.h" |
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34 #include "pager.h" |
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35 |
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36 // Current error state. |
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37 int error_state; |
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38 |
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39 static void |
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40 verror (const char *name, const char *fmt, va_list args) |
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41 { |
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42 if (name != (char *) NULL) |
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43 fprintf (stderr, "%s: ", name); |
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44 |
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45 vfprintf (stderr, fmt, args); |
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46 fprintf (stderr, "\n"); |
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47 fflush (stderr); |
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48 } |
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49 |
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50 void |
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51 message (const char *name, const char *fmt, ...) |
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52 { |
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53 va_list args; |
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54 va_start (args, fmt); |
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55 verror (name, fmt, args); |
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56 va_end (args); |
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57 } |
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58 |
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59 void |
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60 usage (const char *fmt, ...) |
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61 { |
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62 va_list args; |
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63 va_start (args, fmt); |
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64 verror ("usage", fmt, args); |
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65 va_end (args); |
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66 } |
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67 |
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68 void |
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69 warning (const char *fmt, ...) |
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70 { |
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71 va_list args; |
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72 va_start (args, fmt); |
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73 verror ("warning", fmt, args); |
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74 va_end (args); |
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75 } |
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76 |
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77 void |
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78 error (const char *fmt, ...) |
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79 { |
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80 if (error_state == -2) |
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81 return; |
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82 |
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83 if (! error_state) |
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84 error_state = 1; |
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85 |
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86 flush_output_to_pager (); |
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87 |
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88 va_list args; |
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89 va_start (args, fmt); |
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90 |
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91 int len; |
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92 if (fmt && fmt[(len = strlen (fmt) - 1)] == '\n') |
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93 { |
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94 error_state = -2; |
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95 char *tmp_fmt = strsave (fmt); |
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96 tmp_fmt[len - 1] = '\0'; |
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97 verror ("error", tmp_fmt, args); |
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98 } |
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99 else |
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100 verror ("error", fmt, args); |
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101 |
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102 va_end (args); |
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103 } |
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104 |
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105 void |
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106 panic (const char *fmt, ...) |
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107 { |
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108 flush_output_to_pager (); |
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109 |
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110 va_list args; |
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111 va_start (args, fmt); |
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112 verror ("panic", fmt, args); |
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113 va_end (args); |
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114 abort (); |
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115 exit (1); |
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116 } |
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117 |
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118 /* |
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119 ;;; Local Variables: *** |
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120 ;;; mode: C++ *** |
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121 ;;; page-delimiter: "^/\\*" *** |
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122 ;;; End: *** |
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123 */ |
