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/* dctrl-tools - Debian control file inspection tools
Copyright © 1999, 2008, 2011 Antti-Juhani Kaijanaho
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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MSG_H__
#define MSG_H__
#include <errno.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "i18n.h"
static void fail(void) __attribute__((noreturn));
static inline
void fail(void) { exit(2); }
/* log levels */
#define L_FATAL 3
#define L_IMPORTANT 2
#define L_INFORMATIONAL 1
#define L_DEBUG 0
#if !defined(NDEBUG) && !defined(TEST_NODEBUG) && defined(ENABLE_L_DEBUG)
# define INCLUDE_DEBUG_MSGS
#endif
inline static int
do_msg(int severity)
{
extern int loglevel;
#if defined(TEST_NODEBUG)
if (severity == L_DEBUG) {
message (L_FATAL, _("I'm broken - please report this bug."), 0, 0);
abort ();
}
#endif
return severity >= loglevel;
}
inline static char const *
get_progname(void)
{
extern char progname [];
return progname;
}
static inline
void record_error(void)
{
extern bool errors;
errors = 1;
}
void
msg_primitive(const char *fname, int line, const char *fmt, va_list ap);
static void
line_message(int severity, const char *fname, int line, const char *fmt, ...)
__attribute__((format(printf,4,5)));
inline static void
line_message(int severity, const char *fname, int line, const char *fmt, ...)
{
if (do_msg(severity)) {
va_list ap;
va_start(ap, fmt);
msg_primitive(fname, line, fmt, ap);
va_end(ap);
if (severity >= L_IMPORTANT) record_error();
}
}
static void
message (int severity, const char * fname, const char * s, ...)
__attribute__((format(printf,3,4)));
inline static void
message (int severity, const char * fname, const char * fmt, ...)
{
if (do_msg(severity)) {
va_list ap;
va_start(ap, fmt);
msg_primitive(fname, 0, fmt, ap);
va_end(ap);
if (severity >= L_IMPORTANT) record_error();
}
}
#ifndef MSG_C__
#undef PROGNAME_MAXLEN
#endif
#ifdef INCLUDE_DEBUG_MSGS
inline static void
debug_message (const char * s, const char * fname)
{
message (L_DEBUG, fname, "%s", s);
}
#else
#define debug_message(x, y) /* nothing */
#endif
#ifdef INCLUDE_DEBUG_MSGS
static void
debug(const char * s, ...) __attribute__((format(printf, 1, 2)));
inline static void
debug(const char * s, ...)
{
if (do_msg(L_DEBUG)) {
va_list va;
va_start(va, s);
fprintf(stderr, "%s: ", get_progname());
vfprintf(stderr, s, va);
fprintf(stderr, "\n");
va_end(va);
}
}
#else
#define debug(s, ...) /* nothing */
#endif
inline static void
errno_msg(int severity, char const * fname)
{
message(severity, fname, "%s", strerror(errno));
}
#define enomem_msg _("cannot find enough memory")
inline static void
enomem (const char * fname)
{
message (L_IMPORTANT, fname, enomem_msg);
}
inline static void
fatal_enomem (const char * fname)
{
message(L_FATAL, fname, enomem_msg);
fail();
}
#undef enomem_msg
/* Given a string that represents a log level, return the number that
repsesents that loglevel. A negative return value means that the
string is not a valid log level. */
int
str2loglevel (const char * s);
/* Set current log level to ll. */
void
set_loglevel (int ll);
/* Set program name to pn. */
void
msg_set_progname (const char * pn);
/* Return true iff loglevels IMPORTANT or FATAL have been used. */
static inline
bool errors_reported(void)
{
extern bool errors;
return errors;
}
#endif /* MSG_H__ */
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