WINGs/error.c

   1 /*
   2  *  Window Maker miscelaneous function library
   3  *
   4  *  Copyright (c) 1997 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
  22 #include "../src/config.h"
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <stdarg.h>
  27 #include <string.h>
  28 #include <errno.h>
  29
  30 extern char *_WINGS_progname;
  31
  32
  33 #define MAXLINE 1024
  34
  35
  36 /*********************************************************************
  37  * Returns the system error message associated with error code 'errnum'
  38  *********************************************************************/
  39 char*
  40 wstrerror(int errnum)
  41 {
  42 #if defined(HAVE_STRERROR)
  43     return strerror(errnum);
  44 #elif !defined(HAVE_STRERROR) && defined(BSD)
  45     extern int errno, sys_nerr;
  46 #  ifndef __DECC
  47     extern char *sys_errlist[];
  48 #  endif
  49     static char buf[] = "Unknown error 12345678901234567890";
  50
  51     if (errno < sys_nerr)
  52         return sys_errlist[errnum];
  53
  54     sprintf (buf, "Unknown error %d", errnum);
  55     return buf;
  56 #else /* no strerror() and no sys_errlist[] */
  57     static char buf[] = "Error 12345678901234567890";
  58
  59     sprintf(buf, "Error %d", errnum);
  60     return buf;
  61 #endif
  62 }
  63
  64
  65 /**************************************************************************
  66  * Prints a fatal error message with variable arguments and terminates
  67  *
  68  * msg - message to print with optional formatting
  69  * ... - arguments to use on formatting
  70  **************************************************************************/
  71 void
  72 wfatal(const char *msg, ...)
  73 {
  74     va_list args;
  75     char buf[MAXLINE];
  76
  77     va_start(args, msg);
  78
  79     vsnprintf(buf, MAXLINE-3, msg, args);
  80     strcat(buf,"\n");
  81     fflush(stdout);
  82     fputs(_WINGS_progname, stderr);
  83     fputs(" fatal error: ",stderr);
  84     fputs(buf, stderr);
  85     fflush(stdout);
  86     fflush(stderr);
  87
  88     va_end(args);
  89 }
  90
  91
  92 /*********************************************************************
  93  * Prints a warning message with variable arguments
  94  *
  95  * msg - message to print with optional formatting
  96  * ... - arguments to use on formatting
  97  *********************************************************************/
  98 void
  99 wwarning(const char *msg, ...)
 100 {
 101     va_list args;
 102     char buf[MAXLINE];
 103
 104     va_start(args, msg);
 105
 106     vsnprintf(buf, MAXLINE-3, msg, args);
 107     strcat(buf,"\n");
 108     fflush(stdout);
 109     fputs(_WINGS_progname, stderr);
 110     fputs(" warning: ",stderr);
 111     fputs(buf, stderr);
 112     fflush(stdout);
 113     fflush(stderr);
 114
 115     va_end(args);
 116 }
 117
 118
 119 /*********************************************************************
 120  * Prints a system error message with variable arguments
 121  *
 122  * msg - message to print with optional formatting
 123  * ... - arguments to use on formatting
 124  *********************************************************************/
 125 void
 126 wsyserror(const char *msg, ...)
 127 {
 128     va_list args;
 129     char buf[MAXLINE];
 130     int error=errno;
 131
 132     va_start(args, msg);
 133     vsnprintf(buf, MAXLINE-3, msg, args);
 134     fflush(stdout);
 135     fputs(_WINGS_progname, stderr);
 136     fputs(" error: ", stderr);
 137     fputs(buf, stderr);
 138     fputs(": ", stderr);
 139     fputs(wstrerror(error), stderr);
 140     fputs("\n", stderr);
 141     fflush(stderr);
 142     fflush(stdout);
 143     va_end(args);
 144 }
 145
 146
 147 /*********************************************************************
 148  * Prints a system error message with variable arguments, being given
 149  * the error code.
 150  *
 151  * error - the error code foe which to print the message
 152  * msg   - message to print with optional formatting
 153  * ...   - arguments to use on formatting
 154  *********************************************************************/
 155 void
 156 wsyserrorwithcode(int error, const char *msg, ...)
 157 {
 158     va_list args;
 159     char buf[MAXLINE];
 160
 161     va_start(args, msg);
 162     vsnprintf(buf, MAXLINE-3, msg, args);
 163     fflush(stdout);
 164     fputs(_WINGS_progname, stderr);
 165     fputs(" error: ", stderr);
 166     fputs(buf, stderr);
 167     fputs(": ", stderr);
 168     fputs(wstrerror(error), stderr);
 169     fputs("\n", stderr);
 170     fflush(stderr);
 171     fflush(stdout);
 172     va_end(args);
 173 }
 174
 175