debug.c
2.59 KB
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/* GNU mailutils - a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Library Public License as published by
the Free Software Foundation; either version 2, 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <debug0.h>
int
debug_create (debug_t *pdebug, void *owner)
{
debug_t debug;
if (pdebug == NULL)
return EINVAL;
debug = calloc (sizeof (*debug), 1);
if (debug == NULL)
return ENOMEM;
debug->owner = owner;
*pdebug = debug;
return 0;
}
void
debug_destroy (debug_t *pdebug, void *owner)
{
if (pdebug && *pdebug)
{
debug_t debug = *pdebug;
if (debug->owner == owner)
{
free (*pdebug);
*pdebug = NULL;
}
}
}
void *
debug_get_owner (debug_t debug)
{
return (debug) ? debug->owner : NULL;
}
int
debug_set_level (debug_t debug, size_t level)
{
if (debug == NULL)
return EINVAL;
debug->level = level;
return 0;
}
int
debug_get_level (debug_t debug, size_t *plevel)
{
if (debug == NULL)
return EINVAL;
if (plevel)
*plevel = debug->level;
return 0;
}
int
debug_set_print (debug_t debug, int (*_print)
__P ((debug_t, const char *, va_list)), void *owner)
{
if (debug == NULL)
return EINVAL;
if (debug->owner != owner)
return EACCES;
debug->_print = _print;
return 0;
}
/* FIXME: We use a fix size, we should use vasprinf or something
similar to get rid of this arbitrary limitation. */
int
debug_print (debug_t debug, size_t level, const char *format, ...)
{
va_list ap;
va_start (ap, format);
debug_printv (debug, level, format, ap);
va_end (ap);
return 0;
}
int
debug_printv (debug_t debug, size_t level, const char *format, va_list ap)
{
if (debug == NULL || format == NULL)
return EINVAL;
if (!(debug->level & level))
return 0;
if (debug->_print)
debug->_print (debug, format, ap);
else
vfprintf (stderr, format, ap);
return 0;
}