1 files changed, 142 insertions, 0 deletions
diff --git a/camel/camel-block-file.h b/camel/camel-block-file.h
new file mode 100644
index 0000000000..e78254e1ed
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+++ b/camel/camel-block-file.h
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2001 Ximian Inc.
+ *
+ * Authors: Michael Zucchi <notzed@ximian.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _CAMEL_BLOCK_FILE_H
+#define _CAMEL_BLOCK_FILE_H
+
+#include <camel/camel-object.h>
+#include <glib.h>
+#include <e-util/e-msgport.h>
+#include <stdio.h>
+
+typedef guint32 camel_block_t;	/* block offset, absolute, bottom BLOCK_SIZE_BITS always 0 */
+typedef guint32 camel_key_t;	/* this is a bitfield of (block offset:BLOCK_SIZE_BITS) */
+
+typedef struct _CamelBlockRoot CamelBlockRoot;
+typedef struct _CamelBlock CamelBlock;
+typedef struct _CamelBlockFile CamelBlockFile;
+typedef struct _CamelBlockFileClass CamelBlockFileClass;
+
+#define CAMEL_BLOCK_FILE_SYNC (1<<0)
+
+#define CAMEL_BLOCK_SIZE (1024)
+#define CAMEL_BLOCK_SIZE_BITS (10) /* # bits to contain block_size bytes */
+
+#define CAMEL_BLOCK_DIRTY (1<<0)
+#define CAMEL_BLOCK_DETACHED (1<<1)
+
+struct _CamelBlockRoot {
+	char version[8];	/* version number */
+
+	guint32 flags;		/* flags for file */
+	guint32 block_size;	/* block size of this file */
+	camel_block_t free;	/* free block list */
+	camel_block_t last;	/* pointer to end of blocks */
+
+	/* subclasses tack on, but no more than CAMEL_BLOCK_SIZE! */
+};
+
+/* LRU cache of blocks */
+struct _CamelBlock {
+	struct _CamelBlock *next;
+	struct _CamelBlock *prev;
+
+	camel_block_t id;
+	guint32 flags;
+	guint32 refcount;
+	guint32 align00;
+
+	unsigned char data[CAMEL_BLOCK_SIZE];
+};
+
+struct _CamelBlockFile {
+	CamelObject parent;
+
+	struct _CamelBlockFilePrivate *priv;
+
+	char version[8];
+	char *path;
+	int flags;
+
+	int fd;
+	size_t block_size;
+
+	CamelBlockRoot *root;
+	CamelBlock *root_block;
+
+	/* make private? */
+	int block_cache_limit;
+	int block_cache_count;
+	EDList block_cache;
+	GHashTable *blocks;
+};
+
+struct _CamelBlockFileClass {
+	CamelObjectClass parent;
+
+	int (*validate_root)(CamelBlockFile *);
+	int (*init_root)(CamelBlockFile *);
+};
+
+CamelType camel_block_file_get_type(void);
+
+CamelBlockFile *camel_block_file_new(const char *path, int flags, const char version[8], size_t block_size);
+int camel_block_file_rename(CamelBlockFile *bs, const char *path);
+
+CamelBlock *camel_block_file_new_block(CamelBlockFile *bs);
+int camel_block_file_free_block(CamelBlockFile *bs, camel_block_t id);
+CamelBlock *camel_block_file_get_block(CamelBlockFile *bs, camel_block_t id);
+void camel_block_file_detach_block(CamelBlockFile *bs, CamelBlock *bl);
+void camel_block_file_attach_block(CamelBlockFile *bs, CamelBlock *bl);
+void camel_block_file_touch_block(CamelBlockFile *bs, CamelBlock *bl);
+void camel_block_file_unref_block(CamelBlockFile *bs, CamelBlock *bl);
+int camel_block_file_sync_block(CamelBlockFile *bs, CamelBlock *bl);
+int camel_block_file_sync(CamelBlockFile *bs);
+
+/* ********************************************************************** */
+
+typedef struct _CamelKeyFile CamelKeyFile;
+typedef struct _CamelKeyFileClass CamelKeyFileClass;
+
+struct _CamelKeyFile {
+	CamelObject parent;
+
+	struct _CamelKeyFilePrivate *priv;
+
+	FILE *fp;
+	char *path;
+	int flags;
+	off_t last;
+};
+
+struct _CamelKeyFileClass {
+	CamelObjectClass parent;
+};
+
+CamelType      camel_key_file_get_type(void);
+
+CamelKeyFile * camel_key_file_new(const char *path, int flags, const char version[8]);
+int	       camel_key_file_rename(CamelKeyFile *kf, const char *path);
+
+int            camel_key_file_write(CamelKeyFile *kf, camel_block_t *parent, size_t len, camel_key_t *records);
+int            camel_key_file_read(CamelKeyFile *kf, camel_block_t *start, size_t *len, camel_key_t **records);
+
+
+#endif /* ! _CAMEL_BLOCK_FILE_H */