src/server/strbuf.c

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2011 Olaf Wintermann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. 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.
 *
 * 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 HOLDER 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.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "strbuf.h"
#include "sstring.h"

sbuf_t* sbuf_new(size_t size) {
    sbuf_t *buf = malloc(sizeof(sbuf_t));

    buf->ptr = malloc(size);
    buf->ptr[0] = 0;
    buf->size = size;
    buf->length = 0;

    return buf;
}

void sbuf_puts(sbuf_t *buf, char *str) {
    sbuf_append(buf, sstr(str));
}

void sbuf_put(sbuf_t *buf, char chr) {
    sbuf_append(buf, sstrn(&chr, 1));
}

void sbuf_append(sbuf_t *buf, sstr_t str) {
    if (buf->length + str.length >= buf->size) {
        buf->size *= 2;
        buf->ptr = realloc(buf->ptr, buf->size);
        sbuf_append(buf, str);
        return;
    }

    memcpy(&buf->ptr[buf->length], str.ptr, str.length);
    buf->length += str.length;
    buf->ptr[buf->length] = 0;
}

void sbuf_free(sbuf_t *buf) {
    free(buf->ptr);
    free(buf);
}