From: Brian Warner <warner@lothar.com>
Date: Mon, 4 Dec 2006 11:03:29 +0000 (-0700)
Subject: add RIMutableDirectoryNode.get, to get a specific child file or directory
X-Git-Tag: tahoe_v0.1.0-0-UNSTABLE~466
X-Git-Url: https://git.rkrishnan.org/specifications/components/com_hotproperty/%22doc.html?a=commitdiff_plain;h=faf0b13e3c20a14e484271412d56add734bf0cef;p=tahoe-lafs%2Ftahoe-lafs.git

add RIMutableDirectoryNode.get, to get a specific child file or directory
---

diff --git a/allmydata/filetable.py b/allmydata/filetable.py
index bacae680..e93413c1 100644
--- a/allmydata/filetable.py
+++ b/allmydata/filetable.py
@@ -27,14 +27,6 @@ class MutableDirectoryNode(Referenceable):
         if name == "." or name == ".." or "/" in name:
             raise DeadDirectoryNodeError("bad filename component")
 
-    # this is private
-    def get_child(self, name):
-        self.validate_name(name)
-        absname = os.path.join(self._basedir, name)
-        if os.path.isdir(absname):
-            return self.make_subnode(absname)
-        raise DeadDirectoryNodeError("no such directory")
-
     # these are the public methods, available to anyone who holds a reference
 
     def list(self):
@@ -55,6 +47,21 @@ class MutableDirectoryNode(Referenceable):
         return results
     remote_list = list
 
+    def get(self, name):
+        self.validate_name(name)
+        absname = os.path.join(self._basedir, name)
+        if os.path.isdir(absname):
+            return self.make_subnode(absname)
+        elif os.path.isfile(absname):
+            f = open(absname, "rb")
+            data = f.read()
+            f.close()
+            return data
+        else:
+            raise BadFileError("there is nothing named '%s' in this directory"
+                               % name)
+    remote_get = get
+
     def add_directory(self, name):
         self.validate_name(name)
         absname = os.path.join(self._basedir, name)
diff --git a/allmydata/interfaces.py b/allmydata/interfaces.py
index f7e86b76..672bd908 100644
--- a/allmydata/interfaces.py
+++ b/allmydata/interfaces.py
@@ -55,6 +55,9 @@ class RIMutableDirectoryNode(RemoteInterface):
                        maxLength=100,
                        )
 
+    def get(name=str):
+        return (RIMutableDirectoryNode_, Verifierid)
+
     def add_directory(name=str):
         return RIMutableDirectoryNode_
 
diff --git a/allmydata/test/test_filetable.py b/allmydata/test/test_filetable.py
index 060d0cc7..f72a9d31 100644
--- a/allmydata/test/test_filetable.py
+++ b/allmydata/test/test_filetable.py
@@ -19,9 +19,15 @@ class FileTable(unittest.TestCase):
         self.failUnlessRaises(BadFileError, root.remove, "two")
         self.failUnlessRaises(BadFileError, root.remove, "three")
 
+        self.failUnlessEqual(root.get("one"), "vid-one")
+        self.failUnlessRaises(BadFileError, root.get, "missing")
+
         # now play with directories
         subdir1 = root.add_directory("subdir1")
         self.failUnless(isinstance(subdir1, MutableDirectoryNode))
+        subdir1a = root.get("subdir1")
+        self.failUnless(isinstance(subdir1a, MutableDirectoryNode))
+        self.failUnlessEqual(subdir1a._basedir, subdir1._basedir)
         entries = root.list()
         self.failUnlessEqual(len(entries), 2)
         one_index = entries.index( ("one", "vid-one") )