1 files changed, 92 insertions, 1 deletions

diff --git a/websdk/mercurial/filelog.py b/websdk/mercurial/filelog.py
index 302d041..33f3d0c 120000..100644
--- a/websdk/mercurial/filelog.py
+++ b/websdk/mercurial/filelog.py
@@ -1 +1,92 @@
-/usr/share/pyshared/mercurial/filelog.py
\ No newline at end of file
+# filelog.py - file history class for mercurial
+#
+# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
+#
+# This software may be used and distributed according to the terms of the
+# GNU General Public License version 2 or any later version.
+
+import revlog
+import re
+
+_mdre = re.compile('\1\n')
+def _parsemeta(text):
+    """return (metadatadict, keylist, metadatasize)"""
+    # text can be buffer, so we can't use .startswith or .index
+    if text[:2] != '\1\n':
+        return None, None, None
+    s = _mdre.search(text, 2).start()
+    mtext = text[2:s]
+    meta = {}
+    keys = []
+    for l in mtext.splitlines():
+        k, v = l.split(": ", 1)
+        meta[k] = v
+        keys.append(k)
+    return meta, keys, (s + 2)
+
+def _packmeta(meta, keys=None):
+    if not keys:
+        keys = sorted(meta.iterkeys())
+    return "".join("%s: %s\n" % (k, meta[k]) for k in keys)
+
+class filelog(revlog.revlog):
+    def __init__(self, opener, path):
+        revlog.revlog.__init__(self, opener,
+                        "/".join(("data", path + ".i")))
+
+    def read(self, node):
+        t = self.revision(node)
+        if not t.startswith('\1\n'):
+            return t
+        s = t.index('\1\n', 2)
+        return t[s + 2:]
+
+    def add(self, text, meta, transaction, link, p1=None, p2=None):
+        if meta or text.startswith('\1\n'):
+            text = "\1\n%s\1\n%s" % (_packmeta(meta), text)
+        return self.addrevision(text, transaction, link, p1, p2)
+
+    def renamed(self, node):
+        if self.parents(node)[0] != revlog.nullid:
+            return False
+        t = self.revision(node)
+        m = _parsemeta(t)[0]
+        if m and "copy" in m:
+            return (m["copy"], revlog.bin(m["copyrev"]))
+        return False
+
+    def size(self, rev):
+        """return the size of a given revision"""
+
+        # for revisions with renames, we have to go the slow way
+        node = self.node(rev)
+        if self.renamed(node):
+            return len(self.read(node))
+
+        # XXX if self.read(node).startswith("\1\n"), this returns (size+4)
+        return revlog.revlog.size(self, rev)
+
+    def cmp(self, node, text):
+        """compare text with a given file revision
+
+        returns True if text is different than what is stored.
+        """
+
+        t = text
+        if text.startswith('\1\n'):
+            t = '\1\n\1\n' + text
+
+        samehashes = not revlog.revlog.cmp(self, node, t)
+        if samehashes:
+            return False
+
+        # renaming a file produces a different hash, even if the data
+        # remains unchanged. Check if it's the case (slow):
+        if self.renamed(node):
+            t2 = self.read(node)
+            return t2 != text
+
+        return True
+
+    def _file(self, f):
+        return filelog(self.opener, f)