hiredis/util.h

/*
 * Copyright (c) 2009-2010, Salvatore Sanfilippo <antirez at gmail dot com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *   * Neither the name of Redis nor the names of its contributors may be used
 *     to endorse or promote products derived from this software without
 *     specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __UTIL_H
#define __UTIL_H
#include <stdlib.h>
#include <stdio.h>

/* Abort on out of memory */
static void redisOOM(void) {
    fprintf(stderr,"Out of memory in hiredis");
    exit(1);
}

static size_t chrtos(char *buf, size_t size, char byte) {
    size_t len = 0;

    switch(byte) {
    case '\\':
    case '"':
        len = snprintf(buf,size,"\"\\%c\"",byte);
        break;
    case '\n': len = snprintf(buf,size,"\"\\n\""); break;
    case '\r': len = snprintf(buf,size,"\"\\r\""); break;
    case '\t': len = snprintf(buf,size,"\"\\t\""); break;
    case '\a': len = snprintf(buf,size,"\"\\a\""); break;
    case '\b': len = snprintf(buf,size,"\"\\b\""); break;
    default:
        if (isprint(byte))
            len = snprintf(buf,size,"\"%c\"",byte);
        else
            len = snprintf(buf,size,"\"\\x%02x\"",(unsigned char)byte);
        break;
    }

    return len;
}

#endif