From aba3a8b27063a1765c49194cb7f9aba8b277d92f Mon Sep 17 00:00:00 2001
From: "W. Trevor King" <wking@drexel.edu>
Date: Tue, 29 Dec 2009 06:36:23 -0500
Subject: Updated Hg backend to support .children(revision).

---
 libbe/storage/vcs/base.py |  9 +++++----
 libbe/storage/vcs/hg.py   | 33 ++++++++++++++++++++++++++++++++-
 2 files changed, 37 insertions(+), 5 deletions(-)

diff --git a/libbe/storage/vcs/base.py b/libbe/storage/vcs/base.py
index 8a8b3ca..040c3f9 100644
--- a/libbe/storage/vcs/base.py
+++ b/libbe/storage/vcs/base.py
@@ -740,12 +740,10 @@ os.listdir(self.get_path("bugs")):
     def _children(self, id=None, revision=None):
         if revision == None:
             id_to_path = self._cached_path_id.path
-            path_to_id = self._cached_path_id.id
             isdir = os.path.isdir
             listdir = os.listdir
         else:
             id_to_path = lambda id : self._vcs_path(id, revision)
-            path_to_id = self._cached_path_id.id
             isdir = lambda path : self._vcs_isdir(path, revision)
             listdir = lambda path : self._vcs_listdir(path, revision)
         if id==None:
@@ -770,7 +768,7 @@ os.listdir(self.get_path("bugs")):
                     and self._vcs_is_versioned(cpath) == False:
                 children[i] = None
             else:
-                children[i] = path_to_id(cpath)
+                children[i] = self._u_path_to_id(cpath)
                 children[i]
         return [c for c in children if c != None]
 
@@ -895,7 +893,10 @@ os.listdir(self.get_path("bugs")):
             for child in self._vcs_listdir(path, revision):
                 stack.append((os.path.join(path, child),
                               '/'.join([long_id, child])))
-        return None
+        raise InvalidID(id, revision=revision)
+
+    def _u_path_to_id(self, path):
+        return self._cached_path_id.id(path)
 
     def _u_rel_path(self, path, root=None):
         """
diff --git a/libbe/storage/vcs/hg.py b/libbe/storage/vcs/hg.py
index 373dfd2..6baf19c 100644
--- a/libbe/storage/vcs/hg.py
+++ b/libbe/storage/vcs/hg.py
@@ -43,7 +43,6 @@ import base
 
 if libbe.TESTING == True:
     import doctest
-    import sys
     import unittest
 
 
@@ -113,6 +112,38 @@ class Hg(base.VCS):
         else:
             return self._u_invoke_client('cat', '-r', revision, path)
 
+    def _vcs_path(self, id, revision):
+        output = self._u_invoke_client('manifest', '--rev', revision)
+        be_dir = self._cached_path_id._spacer_dirs[0]
+        be_dir_sep = self._cached_path_id._spacer_dirs[0] + os.path.sep
+        files = [f for f in output.splitlines() if f.startswith(be_dir_sep)]
+        for file in files:
+            if not file.startswith(be_dir+os.path.sep):
+                continue
+            parts = file.split(os.path.sep)
+            dir = parts.pop(0) # don't add the first spacer dir
+            for part in parts[:-1]:
+                dir = os.path.join(dir, part)
+                if not dir in files:
+                    files.append(dir)
+        for file in files:
+            if self._u_path_to_id(file) == id:
+                return file
+        raise base.InvalidId(id, revision=revision)
+
+    def _vcs_isdir(self, path, revision):
+        output = self._u_invoke_client('manifest', '--rev', revision)
+        files = output.splitlines()
+        if path in files:
+            return False
+        return True
+
+    def _vcs_listdir(self, path, revision):
+        output = self._u_invoke_client('manifest', '--rev', revision)
+        files = output.splitlines()
+        path = path.rstrip(os.path.sep) + os.path.sep
+        return [self._u_rel_path(f, path) for f in files if f.startswith(path)]
+
     def _vcs_commit(self, commitfile, allow_empty=False):
         args = ['commit', '--logfile', commitfile]
         output = self._u_invoke_client(*args)
-- 
cgit