aboutsummaryrefslogtreecommitdiff
path: root/src/clients/cave/cmd_uninstall.cc
blob: fac160393d77291854ccee7524b0cb33bfa26efe (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
/* vim: set sw=4 sts=4 et foldmethod=syntax : */

/*
 * Copyright (c) 2010 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_uninstall.hh"
#include "cmd_resolve_cmdline.hh"
#include "resolve_common.hh"
#include "exceptions.hh"

#include <paludis/util/make_shared_ptr.hh>
#include <paludis/util/stringify.hh>
#include <paludis/user_dep_spec.hh>
#include <paludis/selection.hh>
#include <paludis/generator.hh>
#include <paludis/filter.hh>
#include <paludis/filtered_generator.hh>
#include <paludis/environment.hh>
#include <paludis/package_id.hh>
#include <paludis/metadata_key.hh>

#include <iostream>
#include <cstdlib>

using namespace paludis;
using namespace cave;

using std::cout;
using std::endl;

namespace
{
    struct UninstallCommandLine :
        CaveCommandCommandLine
    {
        args::ArgsGroup g_target_options;
        args::SwitchArg a_all_versions;

        std::tr1::shared_ptr<ResolveCommandLineResolutionOptions> resolution_options;
        std::tr1::shared_ptr<ResolveCommandLineExecutionOptions> execution_options;
        std::tr1::shared_ptr<ResolveCommandLineDisplayOptions> display_options;
        std::tr1::shared_ptr<ResolveCommandLineProgramOptions> program_options;

        UninstallCommandLine(const bool for_docs) :
            g_target_options(main_options_section(), "Target options", "Target options"),
            a_all_versions(&g_target_options, "all-versions", 'a', "If a supplied spec matches multiple versions, "
                    "uninstall all versions rather than erroring", true),
            resolution_options(for_docs ? make_null_shared_ptr() : make_shared_ptr(new ResolveCommandLineResolutionOptions(this))),
            execution_options(for_docs ? make_null_shared_ptr() : make_shared_ptr(new ResolveCommandLineExecutionOptions(this))),
            display_options(for_docs ? make_null_shared_ptr() : make_shared_ptr(new ResolveCommandLineDisplayOptions(this))),
            program_options(for_docs ? make_null_shared_ptr() : make_shared_ptr(new ResolveCommandLineProgramOptions(this)))
        {
            add_usage_line("[ -x|--execute ] [ --uninstalls-may-break */* ] [ --remove-if-dependent */* ] spec ...");
            add_note("All options available for 'cave resolve' are also permitted. See 'man cave-resolve' for details.");
        }

        std::string app_name() const
        {
            return "cave uninstall";
        }

        std::string app_synopsis() const
        {
            return "Uninstall one or more packages.";
        }

        std::string app_description() const
        {
            return "Uninstalls one or more packages. Note that 'cave uninstall' simply rewrites the supplied "
                "dependency specifications and then uses 'cave resolve' to do the work; 'cave uninstall foo' is "
                "the same as 'cave resolve !foo'.";
        }
    };
}

bool
UninstallCommand::important() const
{
    return true;
}

int
UninstallCommand::run(
        const std::tr1::shared_ptr<Environment> & env,
        const std::tr1::shared_ptr<const Sequence<std::string > > & args
        )
{
    UninstallCommandLine cmdline(false);
    cmdline.run(args, "CAVE", "CAVE_UNINSTALL_OPTIONS", "CAVE_UNINSTALL_CMDLINE");

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

    cmdline.resolution_options->apply_shortcuts();
    cmdline.resolution_options->verify(env);

    std::tr1::shared_ptr<Sequence<std::pair<std::string, std::string> > > targets(new Sequence<std::pair<std::string, std::string> >);
    std::tr1::shared_ptr<Sequence<std::string> > targets_cleaned_up(new Sequence<std::string>);
    for (UninstallCommandLine::ParametersConstIterator p(cmdline.begin_parameters()), p_end(cmdline.end_parameters()) ;
            p != p_end ; ++p)
    {
        PackageDepSpec spec(parse_user_package_dep_spec(*p, env.get(), UserPackageDepSpecOptions()));
        const std::tr1::shared_ptr<const PackageIDSequence> ids((*env)[selection::AllVersionsSorted(
                    generator::Matches(spec, MatchPackageOptions()) | filter::SupportsAction<UninstallAction>())]);
        if (ids->empty())
            throw NothingMatching(spec);
        else if (1 != std::distance(ids->begin(), ids->end()) && ! cmdline.a_all_versions.specified())
            throw BeMoreSpecific(spec, ids);
        else
        {
            for (PackageIDSequence::ConstIterator i(ids->begin()), i_end(ids->end()) ;
                    i != i_end ; ++i)
            {
                std::string target("!" + stringify((*i)->name()));
                if ((*i)->slot_key())
                    target.append(":" + stringify((*i)->slot_key()->value()));
                targets->push_back(std::make_pair(target, ""));
            }

            targets_cleaned_up->push_back("!" + stringify((*ids->begin())->name()));
        }
    }

    return resolve_common(env, *cmdline.resolution_options, *cmdline.execution_options, *cmdline.display_options,
            *cmdline.program_options, make_null_shared_ptr(), targets, targets_cleaned_up, false);
}

std::tr1::shared_ptr<args::ArgsHandler>
UninstallCommand::make_doc_cmdline()
{
    return make_shared_ptr(new UninstallCommandLine(true));
}