>     /*                                                            -*- C -*-
>      * Copyright (c) 1999-2006  Motoyuki Kasahara
>      *
>      * 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.
>      * 3. Neither the name of the project 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 PROJECT 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 PROJECT 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.
>      */

>     /*
>      * 使用方法:
>      *     subbook <book-path>
>      * 例:
>      *     subbook /cdrom
>      * 説明:
>      *     <boook-path> で指定され CD-ROM 書籍に含まれているすべての副本の
>      *     題名を表示します。
>      */
>     #include <stdio.h>
>     #include <stdlib.h>

>     #include <eb/eb.h>
>     #include <eb/error.h>

>     int
>     main(int argc, char *argv[])
>     {
>         EB_Error_Code error_code;
>         EB_Book book;
>         EB_Subbook_Code subbook_list[EB_MAX_SUBBOOKS];
>         int subbook_count;
>         char title[EB_MAX_TITLE_LENGTH + 1];
>         int i;

>         /* コマンド行引数をチェック。*/
>         if (argc != 2) {
>             fprintf(stderr, "Usage: %s book-path\n", argv[0]);
>             exit(1);
>         }

>         /* EB ライブラリと `book' を初期化。*/
>         error_code = eb_initialize_library();
>         if (error_code != EB_SUCCESS) {
>             fprintf(stderr, "%s: failed to initialize EB Library, %s: %s\n",
>                 argv[0], eb_error_message(error_code), argv[1]);
>             goto die;
>         }
>         eb_initialize_book(&book);

>         /* 書籍を `book' に結び付ける。*/
>         error_code = eb_bind(&book, argv[1]);
>         if (error_code != EB_SUCCESS) {
>             fprintf(stderr, "%s: failed to bind the book, %s: %s\n",
>                 argv[0], eb_error_message(error_code), argv[1]);
>             goto die;
>         }

>         /* 副本の一覧を取得。*/
>         error_code = eb_subbook_list(&book, subbook_list, &subbook_count);
>         if (error_code != EB_SUCCESS) {
>             fprintf(stderr, "%s: failed to get the subbbook list, %s\n",
>                 argv[0], eb_error_message(error_code));
>             goto die;
>         }

>         /* 書籍に含まれている副本の題名を出力。*/
>         for (i = 0; i < subbook_count; i++) {
>             error_code = eb_subbook_title2(&book, subbook_list[i], title);
>             if (error_code != EB_SUCCESS) {
>                 fprintf(stderr, "%s: failed to get the title, %s\n",
>                     argv[0], eb_error_message(error_code));
>                 continue;
>             }
>             printf("%d: %s\n", i, title);
>         }

>         /* 書籍と EB ライブラリの利用を終了。*/
>         eb_finalize_book(&book);
>         eb_finalize_library();
>         exit(0);

>         /* エラー発生で終了するときの処理。*/
>       die:
>         eb_finalize_book(&book);
>         eb_finalize_library();
>         exit(1);
>     }