diff --git a/main.c b/main.c
index 5bd1304..63ce83d 100644
--- a/main.c
+++ b/main.c
@@ -3,16 +3,92 @@
 #include <eb/eb.h>
 #include <eb/error.h>
 
-int dump(const char path[]) {
-    (void) path;
+void print_book_info(EB_Book * book) {
+    EB_Disc_Code disc_code;
+    if (eb_disc_type(book, &disc_code) == EB_SUCCESS) {
+        printf("book type: ");
+        switch (disc_code) {
+            case EB_DISC_EB:
+                printf("EB_DISC_EB\n");
+                break;
+            case EB_DISC_EPWING:
+                printf("EB_DISC_EPWING\n");
+                break;
+            case EB_DISC_INVALID:
+                printf("EB_DISC_INVALID\n");
+                break;
+            default:
+                printf("undefined\n");
+                break;
+        }
+    }
+    else {
+        perror("error: failed to get book type\n");
+    }
 
-    const EB_Error_Code error_code = eb_initialize_library();
-    if (error_code != EB_SUCCESS) {
-        perror("error: failed to initialize eb\n");
+    EB_Character_Code char_code;
+    if (eb_character_code(book, &char_code) == EB_SUCCESS) {
+        printf("character type: ");
+        switch (char_code) {
+            case EB_CHARCODE_ISO8859_1:
+                printf("EB_CHARCODE_ISO8859_1\n");
+                break;
+            case EB_CHARCODE_JISX0208:
+                printf("EB_CHARCODE_JISX0208\n");
+                break;
+            case EB_CHARCODE_JISX0208_GB2312:
+                printf("EB_CHARCODE_JISX0208_GB2312\n");
+                break;
+            case EB_CHARCODE_INVALID:
+                printf("EB_CHARCODE_INVALID\n");
+                break;
+            default:
+                printf("undefined\n");
+                break;
+        }
+    }
+    else {
+        perror("error: failed to get book character code\n");
+    }
+
+    EB_Subbook_Code sub_codes[EB_MAX_SUBBOOKS];
+    int sub_count = 0;
+
+    if (eb_subbook_list(book, sub_codes, &sub_count) == EB_SUCCESS) {
+        char title[EB_MAX_TITLE_LENGTH + 1];
+        for (int i = 0; i < sub_count; ++i) {
+            if (eb_subbook_title2(book, sub_codes[i], title) == EB_SUCCESS) {
+                printf("sub-book found: %d (%s)\n", sub_codes[i], title);
+            }
+            else {
+                perror("error: could not get sub-book title\n");
+            }
+        }
+    }
+    else {
+        perror("error: could not get sub-book list\n");
+    }
+
+}
+
+int dump(const char path[]) {
+    printf("processing dictionary: %s\n", path);
+
+    if (eb_initialize_library() != EB_SUCCESS) {
+        perror("error: failed to initialize library\n");
         return 1;
     }
 
+    EB_Book book;
+    if (eb_bind(&book, path) != EB_SUCCESS) {
+        perror("error: failed to bind book\n");
+        eb_finalize_book(&book);
+        return 1;
+    }
 
+    print_book_info(&book);
+
+    eb_finalize_book(&book);
     eb_finalize_library();
     return 0;
 }
@@ -20,7 +96,7 @@ int dump(const char path[]) {
 int main(int argc, char *argv[]) {
     if (argc != 2) {
         fprintf(stderr, "usage: %s path\n", argv[0]);
-        return 1;
+        return 2;
     }
 
     return dump(argv[1]);