Add pisi history command

pisi/cli/history.py

@@ -10,8 +10,16 @@
 # Please read the COPYING file.
 #
 
+import optparse
+
+import gettext
+__trans = gettext.translation('pisi', fallback=True)
+_ = __trans.ugettext
+
 import pisi
 import pisi.api
+import pisi.db
+import pisi.context as ctx
 import pisi.cli.command as command
 
 class History(command.Command):
@@ -25,8 +33,26 @@ Lists previous operations."""
 
     def __init__(self, args=None):
         super(History, self).__init__(args)
+        self.historydb = pisi.db.historydb.HistoryDB()
 
     name = ("history", "hs")
 
+    def options(self):
+
+        group = optparse.OptionGroup(self.parser, _("history options"))
+        self.add_options(group)
+        self.parser.add_option_group(group)
+
+    def add_options(self, group):
+        group.add_option("-l", "--last", action="store", type="int", default=0,
+                         help=_("Output only the last n operations"))
+
     def run(self):
-        pass
+        self.init(database = False, write = False)
+        for operation in self.historydb.latest_operations(ctx.get_option('last')):
+            print "Operation: %s" % operation.type
+            print "Date: %s %s" % (operation.date, operation.time)
+            print
+            for pkg in operation.packages:
+                print "    *", pkg
+            print

pisi/db/historydb.py

@@ -10,22 +10,26 @@
 # Please read the COPYING file.
 #
 
+import os
 import gettext
 __trans = gettext.translation('pisi', fallback=True)
 _ = __trans.ugettext
 
 import piksemel
 
+import pisi.context as ctx
 import pisi.db.lazydb as lazydb
 import pisi.history
 
 class HistoryDB(lazydb.LazyDB):
 
     def init(self):
-        pass
-
-    def __generate_history(self, doc):
-        pass
+        self.__logs = self.__generate_history()
+        
+    def __generate_history(self):
+        logs = os.listdir(ctx.config.history_dir())
+        logs.sort()
+        return logs
 
     def create(self, operation):
         self.history = pisi.history.History()
@@ -34,3 +38,11 @@ class HistoryDB(lazydb.LazyDB):
     def update(self, pkgBefore=None, pkgAfter=None, operation=None):
         self.history.add(pkgBefore, pkgAfter, operation)
         self.history.update()
+
+    def latest_operations(self, count=0):
+        if not count or count > len(self.__logs):
+            count = len(self.__logs)
+
+        for log in self.__logs[-count:]:
+            hist = pisi.history.History(os.path.join(ctx.config.history_dir(), log))
+            yield hist.operation

pisi/history.py

@@ -29,7 +29,10 @@ class PackageInfo:
     a_build = [autoxml.String, autoxml.optional]
 
     def __str__(self):
-        return self.version + "-" + self.release + "-" + self.build
+        vrb = self.version + "-" + self.release
+        if self.build:
+            vrb += "-" + self.build
+        return vrb
 
 class Package:
 
@@ -39,6 +42,22 @@ class Package:
     t_Before = [PackageInfo, autoxml.optional]
     t_After = [PackageInfo, autoxml.optional]
 
+    def __str__(self):
+        # "upgrade", "remove", "install", "reinstall", "downgrade"
+        operation = ""
+        if self.operation == "upgrade":
+            return "%s is upgraded from %s to %s." % (self.name, self.before, self.after)
+        elif self.operation == "remove":
+            return "%s %s is removed." % (self.name, self.before)
+        elif self.operation == "install":
+            return "%s %s is installed." % (self.name, self.after)
+        elif self.operation == "reinstall":
+            return "%s %s is reinstalled." % (self.name, self.after)
+        elif self.operation == "downgrade":
+            return "%s is downgraded from %s to %s." % (self.name, self.before, self.after)
+        else:
+            return ""
+
 class Operation:
 
     a_type = [autoxml.String, autoxml.mandatory]