1 /* LBS: An LFS-inspired filesystem backup system
2 * Copyright (C) 2007 Michael Vrable
4 * Backups are structured as a collection of objects, which may refer to other
5 * objects. Object references are used to name other objects or parts of them.
6 * This file defines the class for representing object references and the
7 * textual representation of these references. */
11 #include <uuid/uuid.h>
19 /* Generate a new UUID, and return the text representation of it. This is
20 * suitable for generating the name for a new segment. */
21 string generate_uuid()
27 uuid_unparse_lower(uuid, buf);
31 ObjectReference::ObjectReference()
32 : segment(""), object("")
36 ObjectReference::ObjectReference(const std::string& segment, int sequence)
40 sprintf(seq_buf, "%08x", sequence);
47 ObjectReference::ObjectReference(const std::string& segment,
48 const std::string& sequence)
49 : segment(segment), object(sequence)
55 string ObjectReference::to_string() const
57 string result = segment + "/" + object;
60 result += "(" + checksum + ")";
64 sprintf(buf, "[%zu+%zu]", range_start, range_length);
71 /* Parse a string object reference and return a pointer to a new
72 * ObjectReference. The caller is responsible for freeing the object. NULL is
73 * returned if there is an error in the syntax. */
74 ObjectReference *ObjectReference::parse(const std::string& s)