HelenOS sources

root/uspace/lib/untar/tar.c

DEFINITIONS

1. tar_type_parse
2. tar_type_str
3. tar_header_parse

/*
 * Copyright (c) 2013 Vojtech Horky
 * 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

/** @addtogroup libuntar
 * @{
 */
/** @file
 */

#include <str.h>
#include <stdlib.h>
#include <stddef.h>
#include <errno.h>
#include <assert.h>
#include "private/tar.h"

tar_type_t tar_type_parse(const char type)
{
        switch (type) {
        case '0':
        case 0:
                return TAR_TYPE_NORMAL;
        case '5':
                return TAR_TYPE_DIRECTORY;
        default:
                return TAR_TYPE_UNKNOWN;
        }
}

const char *tar_type_str(tar_type_t type)
{
        switch (type) {
        case TAR_TYPE_UNKNOWN:
                return "unknown";
        case TAR_TYPE_NORMAL:
                return "normal";
        case TAR_TYPE_DIRECTORY:
                return "directory";
        default:
                assert(false && "unexpected tar_type_t enum value");
                return "?";
        }
}

errno_t tar_header_parse(tar_header_t *parsed, const tar_header_raw_t *raw)
{
        if (str_length(raw->filename) == 0) {
                return EEMPTY;
        }

        size_t size;
        errno_t rc = str_size_t(raw->size, NULL, 8, true, &size);
        if (rc != EOK) {
                return rc;
        }
        parsed->size = size;

        str_cpy(parsed->filename, 100, raw->filename);

        parsed->type = tar_type_parse(raw->type);

        return EOK;
}

/** @}
 */