wireshark/epan/wmem/wmem_strutl.c

/* wmem_strutl.c
 * Wireshark Memory Manager String Utilities
 * Copyright 2012, Evan Huus <eapache@gmail.com>
 *
 * $Id$
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * 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.
 */

#include <string.h>
#include <stdarg.h>

#include <glib.h>

#include "config.h"

#include "wmem_core.h"
#include "wmem_allocator.h"
#include "wmem_strutl.h"

gchar *
wmem_strdup(wmem_allocator_t *allocator, const gchar *src)
{
    size_t len;

    /* If the string is NULL, just return the string "<NULL>" so that the
     * callers don't have to bother checking it. */
    if(!src) {
        src = "<NULL>";
    }

    len = strlen(src) + 1; /* +1 for the null-terminator */

    return memcpy(wmem_alloc(allocator, len), src, len);
}

gchar *
wmem_strndup(wmem_allocator_t *allocator, const gchar *src, const size_t len)
{
    gchar *dst;
    guint i;

    dst = wmem_alloc(allocator, len+1);

    for (i=0; (i < len) && src[i]; i++) {
        dst[i] = src[i];
    }

    dst[i] = '\0';

    return dst;
}

gchar *
wmem_strdup_printf(wmem_allocator_t *allocator, const gchar *fmt, ...)
{
    va_list ap;
    gchar *dst;

    va_start(ap, fmt);
    dst = wmem_strdup_vprintf(allocator, fmt, ap);
    va_end(ap);

    return dst;
}

gchar *
wmem_strdup_vprintf(wmem_allocator_t *allocator, const gchar *fmt, va_list ap)
{
    va_list ap2;
    gsize len;
    gchar* dst;

    G_VA_COPY(ap2, ap);

    len = g_printf_string_upper_bound(fmt, ap);

    dst = wmem_alloc(allocator, len+1);
    g_vsnprintf(dst, (gulong) len, fmt, ap2);
    va_end(ap2);

    return dst;
}

/*
 * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
 *
 * Local variables:
 * c-basic-offset: 4
 * tab-width: 8
 * indent-tabs-mode: nil
 * End:
 *
 * vi: set shiftwidth=4 tabstop=8 expandtab:
 * :indentSize=4:tabSize=8:noTabs=true:
 */