aboutsummaryrefslogtreecommitdiff
path: root/src/clients/cave/cmd_contents.cc
blob: 46e35c4fe7492c12eefdc00658adba4bc197a5c5 (plain)
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
/* vim: set sw=4 sts=4 et foldmethod=syntax : */

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2013 Ciaran McCreesh
 *
 * This file is part of the Paludis package manager. Paludis is free software;
 * you can redistribute it and/or modify it under the terms of the GNU General
 * Public License version 2, as published by the Free Software Foundation.
 *
 * Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "cmd_contents.hh"
#include "format_user_config.hh"
#include "colours.hh"
#include "exceptions.hh"
#include <paludis/args/args.hh>
#include <paludis/args/do_help.hh>
#include <paludis/environment.hh>
#include <paludis/contents.hh>
#include <paludis/user_dep_spec.hh>
#include <paludis/util/wrapped_forward_iterator.hh>
#include <paludis/util/iterator_funcs.hh>
#include <paludis/util/options.hh>
#include <paludis/util/sequence.hh>
#include <paludis/util/stringify.hh>
#include <paludis/filter.hh>
#include <paludis/generator.hh>
#include <paludis/filtered_generator.hh>
#include <paludis/selection.hh>
#include <paludis/package_id.hh>
#include <paludis/metadata_key.hh>
#include <iostream>
#include <algorithm>
#include <set>

#include "command_command_line.hh"
#include "parse_spec_with_nice_error.hh"

using namespace paludis;
using namespace cave;
using std::cout;
using std::endl;

namespace
{
#include "cmd_contents-fmt.hh"

    struct ContentsCommandLine :
        CaveCommandCommandLine
    {
        virtual std::string app_name() const
        {
            return "cave contents";
        }

        virtual std::string app_synopsis() const
        {
            return "Prints the contents of a package ID.";
        }

        virtual std::string app_description() const
        {
            return "Display the contents of (files installed by) a given package ID.";
        }

        ContentsCommandLine()
        {
            add_usage_line("spec");
        }
    };

    std::string stringify_contents_entry(const std::shared_ptr<const ContentsEntry> & entry)
    {
        return entry->make_accept_returning(
            [&] (const ContentsFileEntry & e) {
                return fuc(fs_file(),
                           fv<'p'>(e.part_key()
                                    ? stringify(e.part_key()->parse_value())
                                    : ""),
                           fv<'s'>(stringify(e.location_key()->parse_value())));
            },

            [&] (const ContentsDirEntry & e) {
                return fuc(fs_dir(), fv<'s'>(stringify(e.location_key()->parse_value())));
            },

            [&] (const ContentsSymEntry & e) {
                return fuc(fs_sym(),
                           fv<'p'>(e.part_key()
                                    ? stringify(e.part_key()->parse_value())
                                    : ""),
                           fv<'s'>(stringify(e.location_key()->parse_value())),
                           fv<'t'>(stringify(e.target_key()->parse_value())));
            },

            [&] (const ContentsOtherEntry & e) {
                return fuc(fs_other(), fv<'s'>(stringify(e.location_key()->parse_value())));
            }
            );
    }
}

int
ContentsCommand::run(
        const std::shared_ptr<Environment> & env,
        const std::shared_ptr<const Sequence<std::string > > & args
        )
{
    ContentsCommandLine cmdline;
    cmdline.run(args, "CAVE", "CAVE_CONTENTS_OPTIONS", "CAVE_CONTENTS_CMDLINE");

    if (cmdline.a_help.specified())
    {
        cout << cmdline;
        return EXIT_SUCCESS;
    }

    if (1 != std::distance(cmdline.begin_parameters(), cmdline.end_parameters()))
        throw args::DoHelp("contents takes exactly one parameter");

    PackageDepSpec spec(parse_spec_with_nice_error(*cmdline.begin_parameters(), env.get(),
                { }, filter::InstalledAtRoot(env->preferred_root_key()->parse_value())));

    std::shared_ptr<const PackageIDSequence> entries(
            (*env)[selection::AllVersionsSorted(generator::Matches(spec, nullptr, { })
                | filter::InstalledAtRoot(env->preferred_root_key()->parse_value()))]);

    if (entries->empty())
        nothing_matching_error(env.get(), *cmdline.begin_parameters(), filter::InstalledAtRoot(env->preferred_root_key()->parse_value()));

    const std::shared_ptr<const PackageID> id(*entries->last());
    auto contents(id->contents());
    if (! contents)
        throw BadIDForCommand(spec, id, "does not support listing contents");

    std::transform(
            contents->begin(),
            contents->end(),
            std::ostream_iterator<std::string>(cout, "\n"),
            std::bind(stringify_contents_entry, std::placeholders::_1));

    return EXIT_SUCCESS;
}

std::shared_ptr<args::ArgsHandler>
ContentsCommand::make_doc_cmdline()
{
    return std::make_shared<ContentsCommandLine>();
}

CommandImportance
ContentsCommand::importance() const
{
    return ci_supplemental;
}