1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
// file : bpkg/satisfaction.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <bpkg/satisfaction.hxx>
#include <libbutl/process.mxx>
#include <bpkg/package-odb.hxx>
#include <bpkg/diagnostics.hxx>
using namespace std;
using namespace butl;
namespace bpkg
{
bool
satisfies (const version& v, const dependency_constraint& c)
{
assert (!c.empty () && c.complete ());
if (v == wildcard_version)
return true;
bool s (true);
// Here an absent revision means zero revision and version X must satisfy
// the [X+0 ...) dependency constraint. Note that technically X < X+0.
//
version ev (v.epoch,
v.upstream,
v.release,
v.effective_revision (),
v.iteration);
// See notes in pkg-build:query_available() on ignoring revision in
// comparison.
//
if (c.min_version)
{
int i (ev.compare (*c.min_version, !c.min_version->revision));
s = c.min_open ? i > 0 : i >= 0;
}
if (s && c.max_version)
{
int i (ev.compare (*c.max_version, !c.max_version->revision));
s = c.max_open ? i < 0 : i <= 0;
}
return s;
}
bool
satisfies (const dependency_constraint& l, const dependency_constraint& r)
{
assert (!l.empty () && l.complete () && !r.empty () && r.complete ());
// Note that a revision should not be ignored if we compare the endpoint
// versions. However, an absent revision translates into the effective
// revision differently, depending on the range endpoint side and openness
// (see libbpkg/manifest.hxx for details). That's why we normalize
// endpoint versions prior to comparison.
//
auto norm = [] (const version& v, bool min, bool open) -> version
{
return version (v.epoch,
v.upstream,
v.release,
v.revision ? v.revision :
(min && !open) || (!min && open) ? 0 :
uint16_t (~0),
v.iteration);
};
bool s (false);
if (l.min_version)
{
if (r.min_version)
{
version lv (norm (*l.min_version, true /* min */, l.min_open));
version rv (norm (*r.min_version, true /* min */, r.min_open));
int i (lv.compare (rv, false /* ignore_revision */));
if (l.min_open)
// Doesn't matter if r is min_open or not.
//
s = i >= 0;
else
s = r.min_open ? i > 0 : i >= 0;
}
else
s = true; // Doesn't matter what l.min_version is.
}
else
s = !r.min_version;
if (s)
{
if (l.max_version)
{
if (r.max_version)
{
version lv (norm (*l.max_version, false /* min */, l.max_open));
version rv (norm (*r.max_version, false /* min */, r.max_open));
int i (lv.compare (rv, false /* ignore_revision */));
if (l.max_open)
// Doesn't matter if r is max_open or not.
//
s = i <= 0;
else
s = r.max_open ? i < 0 : i <= 0;
}
else
{
// Doesn't matter what l.max_version is, so leave s to be true.
}
}
else
s = !r.max_version;
}
return s;
}
static version build2_version;
void
satisfy_build2 (const common_options& o,
const package_name& pkg,
const dependency& d)
{
assert (d.name == "build2");
// Extract, parse, and cache build2 version string.
//
if (build2_version.empty ())
{
fdpipe pipe (open_pipe ());
process pr (start_b (o,
pipe, 2 /* stderr */,
verb_b::quiet,
"--version"));
// Shouldn't throw, unless something is severely damaged.
//
pipe.out.close ();
string l;
try
{
ifdstream is (move (pipe.in), fdstream_mode::skip);
getline (is, l);
is.close ();
if (pr.wait () && l.compare (0, 7, "build2 ") == 0)
{
try
{
build2_version = version (string (l, 7));
}
catch (const invalid_argument&) {} // Fall through.
}
// Fall through.
}
catch (const io_error&)
{
pr.wait ();
// Fall through.
}
if (build2_version.empty ())
fail << "unable to determine build2 version of " << name_b (o);
}
if (!satisfies (build2_version, d.constraint))
fail << "unable to satisfy constraint (" << d << ") for package "
<< pkg <<
info << "available build2 version is " << build2_version;
}
static version bpkg_version;
void
satisfy_bpkg (const common_options&,
const package_name& pkg,
const dependency& d)
{
assert (d.name == "bpkg");
// Parse and cache bpkg version string.
//
if (bpkg_version.empty ())
bpkg_version = version (BPKG_VERSION_STR);
if (!satisfies (bpkg_version, d.constraint))
fail << "unable to satisfy constraint (" << d << ") for package "
<< pkg <<
info << "available bpkg version is " << bpkg_version;
}
}
|
