[eit.commands.graph] new command "eit graph"

server/eit/commands/graph.py

@@ -0,0 +1,75 @@
+# -*- coding: utf-8 -*-
+"""
+
+    @author: Fabio Erculiani <lxnay@sabayon.org>
+    @contact: lxnay@sabayon.org
+    @copyright: Fabio Erculiani
+    @license: GPL-2
+
+    B{Entropy Infrastructure Toolkit}.
+
+"""
+import sys
+import argparse
+
+from entropy.i18n import _
+
+from eit.commands.descriptor import EitCommandDescriptor
+from eit.commands.command import EitCommand
+
+
+class EitGraph(EitCommand):
+    """
+    Main Eit graph command.
+    """
+
+    NAME = "graph"
+    ALIASES = []
+
+    def __init__(self, args):
+        EitCommand.__init__(self, args)
+        self._packages = []
+        self._complete = False
+        # Import text_query from equo libraries
+        from text_query import graph_packages
+        self._graph_func = graph_packages
+
+    def parse(self):
+        descriptor = EitCommandDescriptor.obtain_descriptor(
+            EitGraph.NAME)
+        parser = argparse.ArgumentParser(
+            description=descriptor.get_description(),
+            formatter_class=argparse.RawDescriptionHelpFormatter,
+            prog="%s %s" % (sys.argv[0], EitGraph.NAME))
+
+        parser.add_argument("packages", nargs='+', metavar="<package>",
+                            help=_("package name"))
+        parser.add_argument("--complete", action="store_true",
+           default=self._complete,
+           help=_('show system packages, build deps, circular deps'))
+
+        try:
+            nsargs = parser.parse_args(self._args)
+        except IOError:
+            return parser.print_help, []
+
+        self._packages += nsargs.packages
+        self._complete = nsargs.complete
+        return self._call_unlocked, [self._graph, None]
+
+    def _graph(self, entropy_server):
+        """
+        Actual Eit graph code.
+        """
+        return self._graph_func(
+            self._packages, entropy_server,
+            complete = self._complete,
+            repository_ids = entropy_server.repositories())
+
+
+EitCommandDescriptor.register(
+    EitCommandDescriptor(
+        EitGraph,
+        EitGraph.NAME,
+        _('show dependency graph for packages'))
+    )