1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/**************************************************************************************************
$Header: /pub/cvsroot/yencode/lib/error.c,v 1.13 2002/03/19 06:52:16 bboy Exp $
Copyright (C) 2002 Don Moore <bboy@bboy.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at Your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
**************************************************************************************************/
#include "misc.h"
/* Short program name - set with set_progname(). */
char *short_progname = PACKAGE;
/* Program name (argv[0] verbatim) - set with set_progname(). */
char *progname = PACKAGE;
/* Full program name - set with set_progname(). */
char *long_progname = PACKAGE;
/* Should verbose messages be output? */
int err_verbose = 0;
/* Should debug messages be output? */
int err_debug = 0;
/* Should these functions be COMPLETELY silent? */
int err_quiet = 0;
/* Function to call on exit */
static void (*_err_exit_func)(int) = NULL;
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
ERR_SET_EXIT
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
void
err_set_exit(void (*ef)(int))
{
_err_exit_func = ef;
}
/*--- err_set_exit() ----------------------------------------------------------------------------*/
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
SET_PROGRAM_NAME
Sets the global variables `_err_progname' and `_err_long_progname'.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
void
set_progname(const char *name)
{
char *c, resolved_path[PATH_MAX];
if (!name)
return;
progname = xstrdup(name);
if ((c = strrchr(name, '/')))
short_progname = xstrdup(c+1);
else
short_progname = xstrdup(name);
if (!(realpath(name, resolved_path)))
long_progname = xstrdup(name);
else
long_progname = xstrdup(resolved_path);
}
/*--- set_progname() ----------------------------------------------------------------------------*/
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
_ERR_OUT
Outputs an error message.
Returns -1 for convenience if msg_type is err_type_warning or err_type_error, else returns 0.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
int
_err_out(
_err_errtype_t err_type, /* Message type; "warning", "error", etc. */
int append_strerror, /* Should strerror(errno) be appended to the message? */
int is_fatal, /* Should this error cause an abort()? */
int output_help, /* Append the "try --help" message? */
const char *sourcefile, /* Source file name (i.e. __FILE__) */
unsigned int lineno, /* Source file line number (i.e. __LINE__) */
const char *fmt, ... /* The user supplied message to output. */
)
{
#if HAVE_VASPRINTF
unsigned char *msg = NULL;
#else
unsigned char msg[BUFSIZ] = "\0";
#endif
va_list ap;
/* If this is a debug or verbose msg_type and the user doesn't want to see it, don't output. */
if ((err_type == err_type_verbose) && !err_verbose && !err_debug) // (debug implies verbose)
return (0);
if ((err_type == err_type_debug) && !err_debug)
return (0);
if (!err_quiet)
{
va_start(ap, fmt);
#if HAVE_VASPRINTF
vasprintf(&msg, fmt, ap);
#else
vsnprintf(msg, sizeof(msg), fmt, ap);
#endif
va_end(ap);
// Start with "progname: " if this is an error
if (err_type == err_type_error)
{
fputs(progname, stderr); // "progname: "
fputs(": ", stderr);
}
if (err_type == err_type_debug)
fputs("[DEBUG] ", stderr);
fputs(msg, stderr); // message
if (append_strerror) // strerror(errno) if requested
{
fputs(": ", stderr);
if (!errno)
fputs("None/unknown error", stderr);
else
fputs(strerror(errno), stderr);
}
fputc('\n', stderr); // done
// Output help string if requested
if (output_help)
fprintf(stderr, "Try `%s --help' for more information.\n", progname);
#if HAVE_VASPRINTF
free(msgbuf);
#endif
}
if (is_fatal) // Exit if requested
{
if (_err_exit_func)
_err_exit_func(0); // (send 0 so this could also be a signal handler)
exit(EXIT_FAILURE);
}
return (err_type == err_type_warning || err_type == err_type_error) ? -1 : 0;
}
/*--- _err_out() --------------------------------------------------------------------------------*/
/* vi:set ts=3: */
|
