From c5749895ab4f6893bdf1d398691d1dd33e81574c Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Sun, 16 Nov 2008 20:15:34 +0000
Subject: have some more thandy.  This update includes a working downloader
 with tor support, a package system framework, and more.  Most of what's left
 is glue code.

git-svn-id: file:///home/or/svnrepo/updater/trunk@17288 55e972cd-5a19-0410-ae62-a4d7a52db4cd
---
 lib/thandy/packagesys/PackageDB.py | 81 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 lib/thandy/packagesys/PackageDB.py

(limited to 'lib/thandy/packagesys/PackageDB.py')

diff --git a/lib/thandy/packagesys/PackageDB.py b/lib/thandy/packagesys/PackageDB.py
new file mode 100644
index 0000000..bb218be
--- /dev/null
+++ b/lib/thandy/packagesys/PackageDB.py
@@ -0,0 +1,81 @@
+# Copyright 2008 The Tor Project, Inc.  See LICENSE for licensing information.
+
+import anydbm
+import shelve
+
+import thandy.util
+import thandy.formats
+
+class SimplePackageDB:
+
+    def __init__(self, filename):
+        self._db = anydbm.open(filename, 'c')
+
+    def setVersion(self, package, version, filelist):
+        pass
+
+    def setInstallParameters(self, package, params):
+        pass
+
+    def getCurVersion(self, package):
+        pass
+
+    def getInstallParameters(self, package):
+        pass
+
+
+class DBBackedPackageSystem(thandy.packagesys.PackageSystem):
+    def __init__(self, packageDB):
+        self._packageDB = packageDB
+
+class DBBackedPackageHandle(thandy.packagesys.PackageHandle):
+    def __init__(self, packageDB, name, version, filelist):
+        thandy.packagesys.PackageSystem.PackageHandle.__init__(self)
+        self._packageDB = packageDB
+        self._name = name
+        self._version = version
+        self._filelist = filelist
+
+        self._metaData = None
+
+    def _getInstallBase(self):
+        raise NotImplemented()
+
+    def anyVersionInstalled(self, transaction=None):
+        return self._packageDB.getCurVersion(self._name) != None
+
+    def getInstalledVersion(self, transaction=None):
+        return self._packageDB.getCurVersion(self._name)
+
+    def install(self):
+        params = self._doInstall()
+        self._packageDB.setCurVersion(
+            self._name, self._version, self._filelist)
+        self._packageDB.setInstallParameters(self._name, params)
+
+    def _doInstall(self):
+        raise NotImplemented()
+
+    def isInstalled(self):
+        return self.getInstalledVersion(self, transaction) == self._version
+
+    def checkInstall(self):
+        base = self._getInstallBase()
+
+        all_ok = True
+        for fn, hash in self._filelist:
+            fn = os.path.join(base, fn)
+            if not os.path.exists(fn):
+                all_ok = False
+            else:
+                f = open(fn, 'rb')
+                try:
+                    try:
+                        d = thandy.formats.getFileDigest(f)
+                    except OSError:
+                        all_ok = False
+                        break
+                finally:
+                    f.close()
+
+        return all_ok
-- 
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