dist/pdisk/errors.c

   1 //
   2 // errors.c - error & help routines
   3 //
   4 // Written by Eryk Vershen
   5 //
   6
   7 /*
   8  * Copyright 1996,1997,1998 by Apple Computer, Inc.
   9  *              All Rights Reserved
  10  *
  11  * Permission to use, copy, modify, and distribute this software and
  12  * its documentation for any purpose and without fee is hereby granted,
  13  * provided that the above copyright notice appears in all copies and
  14  * that both the copyright notice and this permission notice appear in
  15  * supporting documentation.
  16  *
  17  * APPLE COMPUTER DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
  18  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  19  * FOR A PARTICULAR PURPOSE.
  20  *
  21  * IN NO EVENT SHALL APPLE COMPUTER BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
  22  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  23  * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
  24  * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
  25  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  26  */
  27
  28 // for *printf()
  29 #include <stdio.h>
  30 #include <errno.h>
  31
  32 // for exit()
  33 #ifndef __linux__
  34 #include <stdlib.h>
  35 #endif
  36 // for strrchr
  37 #include <string.h>
  38
  39 // for va_start(), etc.
  40 #include <stdarg.h>
  41
  42 #include "errors.h"
  43
  44
  45 //
  46 // Defines
  47 //
  48
  49
  50 //
  51 // Types
  52 //
  53
  54
  55 //
  56 // Global Constants
  57 //
  58
  59
  60 //
  61 // Global Variables
  62 //
  63 char *program_name;
  64 #ifdef NeXT
  65 extern int errno;
  66 extern int sys_nerr;
  67 extern const char * const sys_errlist[];
  68 #endif
  69
  70
  71 //
  72 // Forward declarations
  73 //
  74
  75
  76 //
  77 // Routines
  78 //
  79 void
  80 init_program_name(char **argv)
  81 {
  82 #if defined(__linux__) || defined(__unix__)
  83     if ((program_name = strrchr(argv[0], '/')) != (char *)NULL) {
  84         program_name++;
  85     } else {
  86         program_name = argv[0];
  87     }
  88 #else
  89     program_name = "pdisk";
  90 #endif
  91 }
  92
  93
  94 void
  95 do_help()
  96 {
  97     printf("\t%s [-h|--help]\n", program_name);
  98     printf("\t%s [-v|--version]\n", program_name);
  99 #ifdef __linux__
 100     printf("\t%s [-l|--list [name]] [...]\n", program_name);
 101 #else
 102     printf("\t%s [-l|--list] name [...]\n", program_name);
 103 #endif
 104     printf("\t%s [-r|--readonly] name ...\n", program_name);
 105     printf("\t%s [-i|--interactive]\n", program_name);
 106     printf("\t%s name [...]\n", program_name);
 107 /*
 108         {"debug",       no_argument,            0,      'd'},
 109         {"abbr",        no_argument,            0,      'a'},
 110         {"fs",          no_argument,            0,      'f'},
 111         {"logical",     no_argument,            0,      kLogicalOption},
 112         {"compute_size", no_argument,           0,      'c'},
 113 */
 114 }
 115
 116
 117 void
 118 usage(const char *kind)
 119 {
 120     error(-1, "bad usage - %s\n", kind);
 121     hflag = 1;
 122 }
 123
 124
 125 //
 126 // Print a message on standard error and exit with value.
 127 // Values in the range of system error numbers will add
 128 // the perror(3) message.
 129 //
 130 void
 131 fatal(int value, const char *fmt, ...)
 132 {
 133     va_list ap;
 134
 135     fprintf(stderr, "%s: ", program_name);
 136     va_start(ap, fmt);
 137     vfprintf(stderr, fmt, ap);
 138     va_end(ap);
 139
 140 #if defined(__linux__) || defined(NeXT) || defined(__unix__)
 141     if (value > 0 && value < sys_nerr) {
 142         fprintf(stderr, "  (%s)\n", sys_errlist[value]);
 143     } else {
 144         fprintf(stderr, "\n");
 145     }
 146 #else
 147     fprintf(stderr, "\n");
 148     printf("Processing stopped: Choose 'Quit' from the file menu to quit.\n\n");
 149 #endif
 150     exit(value);
 151 }
 152
 153
 154 //
 155 // Print a message on standard error.
 156 // Values in the range of system error numbers will add
 157 // the perror(3) message.
 158 //
 159 void
 160 error(int value, const char *fmt, ...)
 161 {
 162     va_list ap;
 163
 164     fprintf(stderr, "%s: ", program_name);
 165     va_start(ap, fmt);
 166     vfprintf(stderr, fmt, ap);
 167     va_end(ap);
 168
 169 #if defined(__linux__) || defined(NeXT) || defined(__unix__)
 170     if (value > 0 && value < sys_nerr) {
 171         fprintf(stderr, "  (%s)\n", sys_errlist[value]);
 172     } else {
 173         fprintf(stderr, "\n");
 174     }
 175 #else
 176     fprintf(stderr, "\n");
 177 #endif
 178 }