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844c5ea652
For static deltas, one strategy that will be employed is to split each object into chunks, and only include changed chunks in the deltas.
80 lines
2.0 KiB
C
80 lines
2.0 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
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*
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* Copyright (C) 2013 Colin Walters <walters@verbum.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include "libgsystem.h"
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#include "bupsplit.h"
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#define BLOB_MAX (8192*4)
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#define BLOB_READ_SIZE (1024*1024)
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int
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main (int argc, char **argv)
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{
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GCancellable *cancellable = NULL;
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GError *local_error = NULL;
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GError **error = &local_error;
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gs_unref_object GFile *path = NULL;
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GBytes *bytes = NULL;
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g_setenv ("GIO_USE_VFS", "local", TRUE);
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if (argc > 1)
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{
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const guint8 *start;
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gsize len;
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path = g_file_new_for_path (argv[1]);
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bytes = gs_file_map_readonly (path, cancellable, error);
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if (!bytes)
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goto out;
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start = g_bytes_get_data (bytes, &len);
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while (TRUE)
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{
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int offset, bits;
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offset = bupsplit_find_ofs (start, MIN(G_MAXINT32, len), &bits);
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if (offset == 0)
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break;
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if (offset > BLOB_MAX)
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offset = BLOB_MAX;
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g_print ("%" G_GUINT64_FORMAT "\n", (guint64)offset);
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start += offset;
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len -= offset;
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}
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}
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else
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{
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bupsplit_selftest ();
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}
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out:
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g_clear_pointer (&bytes, g_bytes_unref);
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if (local_error)
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{
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g_printerr ("%s\n", local_error->message);
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g_error_free (local_error);
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return 1;
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}
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return 0;
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}
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