cave digest

Fixes: ticket:1037

6 files changed, 220 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
index 6e1158954..ace91fc59 100644
--- a/.gitignore
+++ b/.gitignore
@@ -83,6 +83,7 @@ paludis-*.*.*.tar.bz2
 /doc/clients/cave.html
 /doc/clients/cave-config.html
 /doc/clients/cave-contents.html
+/doc/clients/cave-digest.html
 /doc/clients/cave-display-resolution.html
 /doc/clients/cave-dump-cave-formats-conf.html
 /doc/clients/cave-executables.html
diff --git a/doc/clients/Makefile.am b/doc/clients/Makefile.am
index fb31bb747..cf45f9644 100644
--- a/doc/clients/Makefile.am
+++ b/doc/clients/Makefile.am
@@ -28,6 +28,7 @@ paludisclientshtml_DATA = \
 CAVE_COMMANDS_HTML = \
 	cave-config.html \
 	cave-contents.html \
+	cave-digest.html \
 	cave-display-resolution.html \
 	cave-dump-cave-formats-conf.html \
 	cave-executables.html \
diff --git a/src/clients/cave/Makefile.am b/src/clients/cave/Makefile.am
index 3a2601e1a..72679dc73 100644
--- a/src/clients/cave/Makefile.am
+++ b/src/clients/cave/Makefile.am
@@ -24,6 +24,7 @@ noinst_PROGRAMS = man-cave
 command_MANS = \
 	cave-config.1 \
 	cave-contents.1 \
+	cave-digest.1 \
 	cave-display-resolution.1 \
 	cave-dump-cave-formats-conf.1 \
 	cave-executables.1 \
@@ -124,6 +125,7 @@ libcave_a_SOURCES = \
 	command_factory.cc command_factory.hh \
 	cmd_contents.cc cmd_contents.hh cmd_contents-fmt.hh \
 	cmd_config.cc cmd_config.hh \
+	cmd_digest.cc cmd_digest.hh \
 	cmd_display_resolution.cc cmd_display_resolution.hh cmd_display_resolution-fmt.hh \
 	cmd_dump_cave_formats_conf.cc cmd_dump_cave_formats_conf.hh \
 	cmd_executables.cc cmd_executables.hh cmd_executables-fmt.hh \
diff --git a/src/clients/cave/cmd_digest.cc b/src/clients/cave/cmd_digest.cc
new file mode 100644
index 000000000..beb26c1b3
--- /dev/null
+++ b/src/clients/cave/cmd_digest.cc
@@ -0,0 +1,171 @@
+/* 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_digest.hh"
+#include "exceptions.hh"
+
+#include <paludis/args/args.hh>
+#include <paludis/args/do_help.hh>
+
+#include <paludis/util/set.hh>
+#include <paludis/util/wrapped_forward_iterator.hh>
+#include <paludis/util/indirect_iterator-impl.hh>
+#include <paludis/util/simple_visitor_cast.hh>
+#include <paludis/util/iterator_funcs.hh>
+#include <paludis/util/map.hh>
+#include <paludis/util/make_named_values.hh>
+#include <paludis/util/return_literal_function.hh>
+
+#include <paludis/name.hh>
+#include <paludis/environment.hh>
+#include <paludis/package_database.hh>
+#include <paludis/repository.hh>
+#include <paludis/generator.hh>
+#include <paludis/filtered_generator.hh>
+#include <paludis/filter.hh>
+#include <paludis/filter_handler.hh>
+#include <paludis/selection.hh>
+#include <paludis/user_dep_spec.hh>
+#include <paludis/package_id.hh>
+#include <paludis/mask.hh>
+#include <paludis/metadata_key.hh>
+#include <paludis/standard_output_manager.hh>
+#include <paludis/action.hh>
+#include <paludis/partially_made_package_dep_spec.hh>
+
+#include <cstdlib>
+#include <iostream>
+#include <algorithm>
+
+#include "command_command_line.hh"
+
+using namespace paludis;
+using namespace cave;
+using std::cout;
+using std::endl;
+
+namespace
+{
+    struct DigestCommandLine :
+        CaveCommandCommandLine
+    {
+        virtual std::string app_name() const
+        {
+            return "cave digest";
+        }
+
+        virtual std::string app_synopsis() const
+        {
+            return "Generates a digest file for a particular package in a particular repository.";
+        }
+
+        virtual std::string app_description() const
+        {
+            return "Generates a digest file for a particular package in a particular repository.";
+        }
+
+        DigestCommandLine()
+        {
+            add_usage_line("cat/pkg repository");
+        }
+    };
+
+    std::shared_ptr<OutputManager> make_standard_output_manager(const Action &)
+    {
+        return std::make_shared<StandardOutputManager>();
+    }
+}
+
+int
+DigestCommand::run(
+        const std::shared_ptr<Environment> & env,
+        const std::shared_ptr<const Sequence<std::string > > & args
+        )
+{
+    DigestCommandLine cmdline;
+    cmdline.run(args, "CAVE", "CAVE_DIGEST_OPTIONS", "CAVE_DIGEST_CMDLINE");
+
+    if (cmdline.a_help.specified())
+    {
+        cout << cmdline;
+        return EXIT_SUCCESS;
+    }
+
+    if (2 != std::distance(cmdline.begin_parameters(), cmdline.end_parameters()))
+        throw args::DoHelp("digest takes exactly two parameters");
+
+    RepositoryName repo(*next(cmdline.begin_parameters()));
+    Filter repo_filter(filter::Matches(make_package_dep_spec({ }).in_repository(repo), { }));
+    QualifiedPackageName pkg(std::string::npos == cmdline.begin_parameters()->find('/') ?
+            env->package_database()->fetch_unique_qualified_package_name(PackageNamePart(*cmdline.begin_parameters()), repo_filter) :
+            QualifiedPackageName(*cmdline.begin_parameters()));
+
+    auto ids((*env)[selection::AllVersionsSorted(generator::Package(pkg) & generator::InRepository(repo))]);
+
+    if (ids->empty())
+        nothing_matching_error(env.get(), *cmdline.begin_parameters(), repo_filter);
+
+    for (PackageIDSequence::ConstIterator i(ids->begin()), i_end(ids->end()) ;
+            i != i_end ; ++i)
+    {
+        Context i_context("When fetching ID '" + stringify(**i) + "':");
+
+        FetchAction a(make_named_values<FetchActionOptions>(
+                    n::errors() = std::make_shared<Sequence<FetchActionFailure>>(),
+                    n::exclude_unmirrorable() = false,
+                    n::fetch_parts() = FetchParts() + fp_regulars + fp_extras + fp_unneeded,
+                    n::ignore_not_in_manifest() = true,
+                    n::ignore_unfetched() = false,
+                    n::make_output_manager() = &make_standard_output_manager,
+                    n::safe_resume() = true,
+                    n::want_phase() = std::bind(return_literal_function(wp_yes))
+                    ));
+
+        if ((*i)->supports_action(SupportsActionTest<FetchAction>()))
+        {
+            cout << "Fetching " << **i << "..." << endl;
+            (*i)->perform_action(a);
+        }
+        else
+            cout << "No fetching supported for " << **i << endl;
+
+        cout << endl;
+    }
+
+    auto r(env->package_database()->fetch_repository(repo));
+    if (r->manifest_interface())
+    {
+        cout << "Making manifest..." << endl;
+        r->manifest_interface()->make_manifest(pkg);
+    }
+    else
+    {
+        cout << "Cannot make manifests for " << repo << endl;
+        return EXIT_FAILURE;
+    }
+
+    return EXIT_SUCCESS;
+}
+
+std::shared_ptr<args::ArgsHandler>
+DigestCommand::make_doc_cmdline()
+{
+    return std::make_shared<DigestCommandLine>();
+}
+
diff --git a/src/clients/cave/cmd_digest.hh b/src/clients/cave/cmd_digest.hh
new file mode 100644
index 000000000..75d16e58d
--- /dev/null
+++ b/src/clients/cave/cmd_digest.hh
@@ -0,0 +1,43 @@
+/* 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
+ */
+
+#ifndef PALUDIS_GUARD_SRC_CLIENTS_CAVE_CMD_DIGEST_HH
+#define PALUDIS_GUARD_SRC_CLIENTS_CAVE_CMD_DIGEST_HH 1
+
+#include "command.hh"
+
+namespace paludis
+{
+    namespace cave
+    {
+        class PALUDIS_VISIBLE DigestCommand :
+            public Command
+        {
+            public:
+                int run(
+                        const std::shared_ptr<Environment> &,
+                        const std::shared_ptr<const Sequence<std::string > > & args
+                        );
+
+                std::shared_ptr<args::ArgsHandler> make_doc_cmdline();
+        };
+    }
+}
+
+#endif
diff --git a/src/clients/cave/command_factory.cc b/src/clients/cave/command_factory.cc
index e49477f53..0192ec841 100644
--- a/src/clients/cave/command_factory.cc
+++ b/src/clients/cave/command_factory.cc
@@ -37,6 +37,7 @@
 
 #include "cmd_config.hh"
 #include "cmd_contents.hh"
+#include "cmd_digest.hh"
 #include "cmd_display_resolution.hh"
 #include "cmd_dump_cave_formats_conf.hh"
 #include "cmd_executables.hh"
@@ -154,6 +155,7 @@ CommandFactory::CommandFactory() :
     _imp->handlers.insert(std::make_pair("config", std::bind(&make_command<ConfigCommand>)));
     _imp->handlers.insert(std::make_pair("contents", std::bind(&make_command<ContentsCommand>)));
     _imp->handlers.insert(std::make_pair("display-resolution", std::bind(&make_command<DisplayResolutionCommand>)));
+    _imp->handlers.insert(std::make_pair("digest", std::bind(&make_command<DigestCommand>)));
     _imp->handlers.insert(std::make_pair("dump-cave-formats-conf", std::bind(&make_command<DumpCaveFormatsConfCommand>)));
     _imp->handlers.insert(std::make_pair("executables", std::bind(&make_command<ExecutablesCommand>)));
     _imp->handlers.insert(std::make_pair("execute-resolution", std::bind(&make_command<ExecuteResolutionCommand>)));