Implemented table linked list, decompression and encryption. Tests have been improved.

1 files changed, 73 insertions, 0 deletions

diff --git a/src/table.c b/src/table.c
new file mode 100644
index 0000000..84ab77f
--- /dev/null
+++ b/src/table.c
@@ -0,0 +1,73 @@
+/* table.c -- Code for handling the archive's table section.
+
+   Copyright (C) 2017 Jakob Tsar-Fox, All Rights Reserved.
+
+   This file is part of Nekopack.
+
+   Nekopack 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 3 of the License, or (at
+   your option) any later version.
+
+   Nekopack 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 Nekopack. If not, see <http://www.gnu.org/licenses/>. */
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "io.h"
+#include "table.h"
+
+#define ELIF_MAGIC 0x46696c65
+#define FILE_MAGIC 0x656c6946
+#define HNFN_MAGIC 0x6e666e68
+#define NEKO_MAGIC 0x6f6b656e
+
+
+/* Returns the root of a linked list containing all of the files listed
+   in the archive's table section. */
+struct table_entry *parse_table(struct stream *s) {
+    struct table_entry *cur, *root = calloc(sizeof(struct table_entry), 1);
+
+    bool     ended = false;
+    uint32_t magic;
+    uint64_t size;
+
+    do {
+        stream_read(&magic, s, sizeof(uint32_t));
+        stream_read(&size, s, sizeof(uint64_t));
+
+        switch (magic) {
+            case ELIF_MAGIC:
+            case HNFN_MAGIC:
+            case NEKO_MAGIC:
+                break;
+            case FILE_MAGIC:
+                break;
+            default:
+                ended = 1;
+        }
+    } while (!ended);
+}
+
+
+/* Inserts `e` to the end of the linked list specified by `root`. */
+void entry_append(struct table_entry *root, struct table_entry *e) {
+    struct table_entry *cur;
+    for (cur = root; cur->next != NULL; cur = cur->next);
+    cur->next = e;
+}
+
+
+/* Frees every entry in the linked list specified by `cur`. */
+void entry_free(struct table_entry *cur) {
+    if (cur->next != NULL)
+        entry_free(cur->next);
+    free(cur);
+}