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1 | /* |
2 | * Copyright (c) 2002, Robert Collins. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * A copy of the GNU General Public License can be found at | |
10 | * http://www.gnu.org/ | |
11 | * | |
12 | * Written by Robert Collins <rbtcollins@hotmail.com> | |
13 | * | |
14 | */ | |
15 | ||
16 | #if 0 | |
17 | static const char *cvsid = "\n%%% $Id$\n"; | |
18 | #endif | |
19 | ||
20 | #include "PackageSpecification.h" | |
21 | #include "package_version.h" | |
22 | ||
23 | PackageSpecification::PackageSpecification (String const &packageName) | |
24 | : _packageName (packageName) , _operator (0), _version () | |
25 | { | |
26 | } | |
27 | ||
28 | String const& | |
29 | PackageSpecification::packageName () const | |
30 | { | |
31 | return _packageName; | |
32 | } | |
33 | ||
34 | void | |
35 | PackageSpecification::setOperator (_operators const &anOperator) | |
36 | { | |
37 | _operator = &anOperator; | |
38 | } | |
39 | ||
40 | void | |
41 | PackageSpecification::setVersion (String const &aVersion) | |
42 | { | |
43 | _version = aVersion; | |
44 | } | |
45 | ||
46 | bool | |
47 | PackageSpecification::satisfies (packageversion const &aPackage) const | |
48 | { | |
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49 | if (_packageName.casecompare (aPackage.Name()) != 0) |
50 | return false; | |
51 | if (_operator && _version.size() | |
52 | && !_operator->satisfies (aPackage.Canonical_version (), _version)) | |
53 | return false; | |
54 | return true; | |
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55 | } |
56 | ||
57 | String | |
58 | PackageSpecification::serialise () const | |
59 | { | |
60 | return _packageName; | |
61 | } | |
62 | ||
63 | PackageSpecification & | |
64 | PackageSpecification::operator= (PackageSpecification const &rhs) | |
65 | { | |
66 | _packageName = rhs._packageName; | |
67 | return *this; | |
68 | } | |
69 | ||
70 | std::ostream & | |
71 | operator << (std::ostream &os, PackageSpecification const &spec) | |
72 | { | |
73 | os << spec._packageName; | |
74 | if (spec._operator) | |
75 | os << " " << spec._operator->caption() << " " << spec._version; | |
76 | return os; | |
77 | } | |
78 | ||
79 | const PackageSpecification::_operators PackageSpecification::Equals(0); | |
80 | const PackageSpecification::_operators PackageSpecification::LessThan(1); | |
81 | const PackageSpecification::_operators PackageSpecification::MoreThan(2); | |
82 | const PackageSpecification::_operators PackageSpecification::LessThanEquals(3); | |
83 | const PackageSpecification::_operators PackageSpecification::MoreThanEquals(4); | |
84 | ||
85 | char const * | |
86 | PackageSpecification::_operators::caption () const | |
87 | { | |
88 | switch (_value) | |
89 | { | |
90 | case 0: | |
91 | return "=="; | |
92 | case 1: | |
93 | return "<"; | |
94 | case 2: | |
95 | return ">"; | |
96 | case 3: | |
97 | return "<="; | |
98 | case 4: | |
99 | return ">="; | |
100 | } | |
101 | // Pacify GCC: (all case options are checked above) | |
102 | return "Unknown operator"; | |
103 | } | |
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104 | |
105 | bool | |
106 | PackageSpecification::_operators::satisfies (String const &lhs, String const &rhs) const | |
107 | { | |
108 | switch (_value) | |
109 | { | |
110 | case 0: | |
111 | return lhs.casecompare (rhs) == 0; | |
112 | case 1: | |
113 | return lhs.casecompare (rhs) < 0; | |
114 | case 2: | |
115 | return lhs.casecompare (rhs) > 0; | |
116 | case 3: | |
117 | return lhs.casecompare (rhs) <= 0; | |
118 | case 4: | |
119 | return lhs.casecompare (rhs) >= 0; | |
120 | } | |
121 | return false; | |
122 | } |