projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 60a17f4e JH |
1 | /* error.c -- error handler for noninteractive utilities |
| 2 | Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc. | |
| 3 | ||
| 4 | This program is free software; you can redistribute it and/or modify | |
| 5 | it under the terms of the GNU General Public License as published by | |
| 6 | the Free Software Foundation; either version 2, or (at your option) | |
| 7 | any later version. | |
| 8 | ||
| 9 | This program is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | GNU General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU General Public License | |
| 15 | along with this program; if not, write to the Free Software | |
| 16 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
| 17 | ||
| 18 | /* Written by David MacKenzie. */ | |
| 19 | ||
| 20 | #include <stdio.h> | |
| 21 | ||
| 22 | #ifdef HAVE_VPRINTF | |
| 23 | ||
| 24 | #if __STDC__ | |
| 25 | #include <stdarg.h> | |
| 26 | #define VA_START(args, lastarg) va_start(args, lastarg) | |
| 27 | #else /* !__STDC__ */ | |
| 28 | #include <varargs.h> | |
| 29 | #define VA_START(args, lastarg) va_start(args) | |
| 30 | #endif /* !__STDC__ */ | |
| 31 | ||
| 32 | #else /* !HAVE_VPRINTF */ | |
| 33 | ||
| 34 | #ifdef HAVE_DOPRNT | |
| 35 | #define va_alist args | |
| 36 | #define va_dcl int args; | |
| 37 | #else /* !HAVE_DOPRNT */ | |
| 38 | #define va_alist a1, a2, a3, a4, a5, a6, a7, a8 | |
| 39 | #define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8; | |
| 40 | #endif /* !HAVE_DOPRNT */ | |
| 41 | ||
| 42 | #endif /* !HAVE_VPRINTF */ | |
| 43 | ||
| 44 | #ifdef STDC_HEADERS | |
| 45 | #include <stdlib.h> | |
| 46 | #include <string.h> | |
| 47 | #else /* !STDC_HEADERS */ | |
| 48 | void exit (); | |
| 49 | #endif /* !STDC_HEADERS */ | |
| 50 | ||
| 51 | extern char *program_name; | |
| 52 | ||
| 53 | #ifndef HAVE_STRERROR | |
| 54 | static char * | |
| 55 | private_strerror (errnum) | |
| 56 | int errnum; | |
| 57 | { | |
| 58 | extern char *sys_errlist[]; | |
| 59 | extern int sys_nerr; | |
| 60 | ||
| 61 | if (errnum > 0 && errnum <= sys_nerr) | |
| 62 | return sys_errlist[errnum]; | |
| 63 | return "Unknown system error"; | |
| 64 | } | |
| 65 | #define strerror private_strerror | |
| 66 | #endif /* !HAVE_STRERROR */ | |
| 67 | ||
| 68 | /* Print the program name and error message MESSAGE, which is a printf-style | |
| 69 | format string with optional args. | |
| 70 | If ERRNUM is nonzero, print its corresponding system error message. | |
| 71 | Exit with status STATUS if it is nonzero. */ | |
| 72 | /* VARARGS */ | |
| 73 | void | |
| 74 | #if defined (HAVE_VPRINTF) && __STDC__ | |
| 75 | error (int status, int errnum, char *message, ...) | |
| 76 | #else /* !HAVE_VPRINTF or !__STDC__ */ | |
| 77 | error (status, errnum, message, va_alist) | |
| 78 | int status; | |
| 79 | int errnum; | |
| 80 | char *message; | |
| 81 | va_dcl | |
| 82 | #endif /* !HAVE_VPRINTF or !__STDC__ */ | |
| 83 | { | |
| 84 | #ifdef HAVE_VPRINTF | |
| 85 | va_list args; | |
| 86 | #endif /* HAVE_VPRINTF */ | |
| 87 | ||
| 88 | fprintf (stderr, "%s: ", program_name); | |
| 89 | #ifdef HAVE_VPRINTF | |
| 90 | VA_START (args, message); | |
| 91 | vfprintf (stderr, message, args); | |
| 92 | va_end (args); | |
| 93 | #else /* !HAVE_VPRINTF */ | |
| 94 | #ifdef HAVE_DOPRNT | |
| 95 | _doprnt (message, &args, stderr); | |
| 96 | #else /* !HAVE_DOPRNT */ | |
| 97 | fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8); | |
| 98 | #endif /* !HAVE_DOPRNT */ | |
| 99 | #endif /* !HAVE_VPRINTF */ | |
| 100 | if (errnum) | |
| 101 | fprintf (stderr, ": %s", strerror (errnum)); | |
| 102 | putc ('\n', stderr); | |
| 103 | fflush (stderr); | |
| 104 | if (status) | |
| 105 | exit (status); | |
| 106 | } |