xref: /freebsd/lib/libdevdctl/guid.cc (revision 22cf89c938886d14f5796fc49f9f020c23ea8eaf)
1 /*-
2  * Copyright (c) 2012, 2013 Spectra Logic Corporation
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions, and the following disclaimer,
10  *    without modification.
11  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12  *    substantially similar to the "NO WARRANTY" disclaimer below
13  *    ("Disclaimer") and any redistribution must be conditioned upon
14  *    including a substantially similar Disclaimer requirement for further
15  *    binary redistribution.
16  *
17  * NO WARRANTY
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
27  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28  * POSSIBILITY OF SUCH DAMAGES.
29  *
30  * Authors: Alan Somers         (Spectra Logic Corporation)
31  */
32 
33 /**
34  * \file guid.cc
35  *
36  * Implementation of the Guid class.
37  */
38 #include <sys/cdefs.h>
39 
40 #include <stdlib.h>
41 #include <limits.h>
42 #include <inttypes.h>
43 
44 #include <iostream>
45 #include <string>
46 
47 #include "guid.h"
48 /*============================ Namespace Control =============================*/
49 using std::string;
50 namespace DevdCtl
51 {
52 
53 /*=========================== Class Implementations ==========================*/
54 /*----------------------------------- Guid -----------------------------------*/
55 Guid::Guid(const string &guidString)
56 {
57 	if (guidString.empty()) {
58 		m_GUID = INVALID_GUID;
59 	} else {
60 		/*
61 		 * strtoumax() returns zero on conversion failure
62 		 * which nicely matches our choice for INVALID_GUID.
63 		 */
64 		m_GUID = (uint64_t)strtoumax(guidString.c_str(), NULL, 0);
65 	}
66 }
67 
68 std::ostream&
69 operator<< (std::ostream& out, Guid g)
70 {
71 	if (g.IsValid())
72 		out << (uint64_t)g;
73 	else
74 		out << "None";
75 	return (out);
76 }
77 
78 } // namespace DevdCtl
79