WINGs/error.c

   1 /*
   2  *  Window Maker miscelaneous function library
   3  *
   4  *  Copyright (c) 1997-2003 Alfredo K. Kojima
   5  *
   6  *  This program 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 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program 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 this program; if not, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include "wconfig.h"
  22
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <stdarg.h>
  26 #include <string.h>
  27 #include <errno.h>
  28
  29 extern char *_WINGS_progname;
  30
  31 #define MAXLINE 1024
  32
  33 /*********************************************************************
  34  * Returns the system error message associated with error code 'errnum'
  35  *********************************************************************/
  36 char *wstrerror(int errnum)
  37 {
  38 #if defined(HAVE_STRERROR)
  39         return strerror(errnum);
  40 #elif !defined(HAVE_STRERROR) && defined(BSD)
  41         extern int errno, sys_nerr;
  42 #  ifndef __DECC
  43         extern char *sys_errlist[];
  44 #  endif
  45         static char buf[] = "Unknown error 12345678901234567890";
  46
  47         if (errno < sys_nerr)
  48                 return sys_errlist[errnum];
  49
  50         snprintf(buf, sizeof(buf), _("Unknown error %d"), errnum);
  51         return buf;
  52 #else                           /* no strerror() and no sys_errlist[] */
  53         static char buf[] = "Error 12345678901234567890";
  54
  55         snprintf(buf, sizeof(buf), _("Error %d"), errnum);
  56         return buf;
  57 #endif
  58 }
  59
  60 /*********************************************************************
  61  * Prints a message with variable arguments
  62  *
  63  * msg - message to print with optional formatting
  64  * ... - arguments to use on formatting
  65  *********************************************************************/
  66 void wmessage(const char *msg, ...)
  67 {
  68         va_list args;
  69         char buf[MAXLINE];
  70
  71         va_start(args, msg);
  72
  73         vsnprintf(buf, MAXLINE - 3, msg, args);
  74         strcat(buf, "\n");
  75         fflush(stdout);
  76         fputs(_WINGS_progname ? _WINGS_progname : "WINGs", stderr);
  77         fputs(": ", stderr);
  78         fputs(buf, stderr);
  79         fflush(stdout);
  80         fflush(stderr);
  81
  82         va_end(args);
  83 }
  84
  85 /*********************************************************************
  86  * Prints a warning message with variable arguments
  87  *
  88  * msg - message to print with optional formatting
  89  * ... - arguments to use on formatting
  90  *********************************************************************/
  91 void wwarning(const char *msg, ...)
  92 {
  93         va_list args;
  94         char buf[MAXLINE];
  95
  96         va_start(args, msg);
  97
  98         vsnprintf(buf, MAXLINE - 3, msg, args);
  99         strcat(buf, "\n");
 100         fflush(stdout);
 101         fputs(_WINGS_progname ? _WINGS_progname : "WINGs", stderr);
 102         fputs(_(" warning: "), stderr);
 103         fputs(buf, stderr);
 104         fflush(stdout);
 105         fflush(stderr);
 106
 107         va_end(args);
 108 }
 109
 110 /**************************************************************************
 111  * Prints a fatal error message with variable arguments and terminates
 112  *
 113  * msg - message to print with optional formatting
 114  * ... - arguments to use on formatting
 115  **************************************************************************/
 116 void wfatal(const char *msg, ...)
 117 {
 118         va_list args;
 119         char buf[MAXLINE];
 120
 121         va_start(args, msg);
 122
 123         vsnprintf(buf, MAXLINE - 3, msg, args);
 124         strcat(buf, "\n");
 125         fflush(stdout);
 126         fputs(_WINGS_progname ? _WINGS_progname : "WINGs", stderr);
 127         fputs(_(" fatal error: "), stderr);
 128         fputs(buf, stderr);
 129         fflush(stdout);
 130         fflush(stderr);
 131
 132         va_end(args);
 133 }
 134
 135 /*********************************************************************
 136  * Prints a system error message with variable arguments
 137  *
 138  * msg - message to print with optional formatting
 139  * ... - arguments to use on formatting
 140  *********************************************************************/
 141 void wsyserror(const char *msg, ...)
 142 {
 143         va_list args;
 144         char buf[MAXLINE];
 145         int error = errno;
 146
 147         va_start(args, msg);
 148         vsnprintf(buf, MAXLINE - 3, msg, args);
 149         fflush(stdout);
 150         fputs(_WINGS_progname ? _WINGS_progname : "WINGs", stderr);
 151         fputs(_(" error: "), stderr);
 152         fputs(buf, stderr);
 153         fputs(": ", stderr);
 154         fputs(wstrerror(error), stderr);
 155         fputs("\n", stderr);
 156         fflush(stderr);
 157         fflush(stdout);
 158         va_end(args);
 159 }
 160
 161 /*********************************************************************
 162  * Prints a system error message with variable arguments, being given
 163  * the error code.
 164  *
 165  * error - the error code foe which to print the message
 166  * msg   - message to print with optional formatting
 167  * ...   - arguments to use on formatting
 168  *********************************************************************/
 169 void wsyserrorwithcode(int error, const char *msg, ...)
 170 {
 171         va_list args;
 172         char buf[MAXLINE];
 173
 174         va_start(args, msg);
 175         vsnprintf(buf, MAXLINE - 3, msg, args);
 176         fflush(stdout);
 177         fputs(_WINGS_progname ? _WINGS_progname : "WINGs", stderr);
 178         fputs(_(" error: "), stderr);
 179         fputs(buf, stderr);
 180         fputs(": ", stderr);
 181         fputs(wstrerror(error), stderr);
 182         fputs("\n", stderr);
 183         fflush(stderr);
 184         fflush(stdout);
 185         va_end(args);
 186 }