-/* Cumulus: Smart Filesystem Backup to Dumb Servers
- *
- * Copyright (C) 2007-2008 The Regents of the University of California
- * Written by Michael Vrable <mvrable@cs.ucsd.edu>
+/* Cumulus: Efficient Filesystem Backup to the Cloud
+ * Copyright (C) 2007-2008 The Cumulus Developers
+ * See the AUTHORS file for a list of contributors.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* a substring rather than the entire string using a range specifier. If no
* range specifier is given, then by default the entire object is used.
* <range> ::= <start> "+" <length>
+ * | <length>
+ * | "=" <length>
* Both <start> and <length> are decimal values. If included, the range is
* enclosed in brackets. As an abbreviation, if <start> is 0 then the range
- * can be given as just <length> (no "+" needed).
+ * can be given as just <length> (no "+" needed). The "=<length>" form asserts
+ * that the underlying object is exactly <length> bytes in size.
*
* When both a checksum and a range are included, note that the checksum is
* taken over the entire original object, before the range is taken into
bool has_range() const { return range_valid; }
size_t get_range_start() const { return range_start; }
size_t get_range_length() const { return range_length; }
- void clear_range() { range_start = range_length = 0; range_valid = false; }
- void set_range(size_t start, size_t length)
- { range_start = start; range_length = length; range_valid = true; }
+ bool range_is_exact() const { return range_exact; }
+ void clear_range()
+ { range_start = range_length = 0;
+ range_valid = false; range_exact = false; }
+ void set_range(size_t start, size_t length, bool exact = false)
+ { range_start = start; range_length = length;
+ range_valid = true; range_exact = exact; }
bool merge(ObjectReference ref);
RefType type;
std::string segment, object, checksum;
size_t range_start, range_length;
- bool checksum_valid, range_valid;
+ bool checksum_valid, range_valid, range_exact;
};
#endif // _LBS_REF_H