ks_error.c

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/*
 * libkarmaclient - A C Library to the Karmasphere Reputation Server
 * Copyright (C) 2006 Karmasphere <http://www.karmasphere.com/>
 *  - Shevek <shevek@karmasphere.com>
 *  - Dave Stewart <dave.stewart@karmasphere.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
 */

#include "ks_config.h"
#include "ks_common.h"

#ifdef STDC_HEADERS
# include <stdlib.h>
# include <stdarg.h>
# include <stdio.h>
#endif

#ifdef HAVE_STRING_H
#include <string.h>
#endif

#ifdef HAVE_STDIO_H
#include <stdio.h>
#endif

#define KS_ERRTAG               "libkarmaclient: "
#define KS_ERRBUFSIZ    1024

static ks_error_handler_t       ks_error_handler = NULL;

void
ks_error_handler_set(ks_error_handler_t handler)
{
        ks_error_handler = handler;
}

/* XXX: Don't know how to document varargs */
void
ks_error(const char *format, ...)
{
        char    buffer[KS_ERRBUFSIZ];
        va_list ap;

        strcpy(buffer, KS_ERRTAG);

        va_start(ap, format);
        vsnprintf(&(buffer[strlen(KS_ERRTAG)]),
                        sizeof(buffer) - strlen(KS_ERRTAG),
                        format, ap);
        va_end(ap);
        buffer[sizeof(buffer) - 1] = '\0';

        if (ks_error_handler) {
                ks_error_handler(buffer);
        }
        else {
                fputs(buffer, stderr);
                putc('\n', stderr);
        }
}

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