[PATCH 1 of 5 perfarce] add support for using a filemap for inclusion and/or exclusion

[Dan Villiom Podlaski Christiansen]

# HG changeset patch
# User Dan Villiom Podlaski Christiansen <dan at cabo.dk>
# Date 1417271360 -3600
#      Sat Nov 29 15:29:20 2014 +0100
# Node ID f84a43b809a9c59516b2e9c732352c78fafddd96
# Parent  e4eedba9b6773734c2b878148800747015708a84
add support for using a filemap for inclusion and/or exclusion

Due to the use of bare 'sync' for fetching changelists, we still fetch
excluded files. We just don't commit them to repository.

diff --git a/perfarce.py b/perfarce.py
--- a/perfarce.py
+++ b/perfarce.py
@@ -97,6 +97,7 @@ from mercurial import cmdutil, commands,
 from mercurial.node import hex, short
 from mercurial.i18n import _
 from mercurial.error import ConfigError
+from hgext.convert import filemap
 import marshal, os, re, string, sys
 propertycache=util.propertycache
 
@@ -275,6 +276,20 @@ class p4client(object):
             if self.root.endswith('/'):
                 self.root = self.root[:-1]
 
+    @propertycache
+    def filemapper(self):
+        if self.ui.config('perfarce', 'filemap'):
+            mappath = self.ui.configpath('perfarce', 'filemap')
+        else:
+            mappath = None
+
+        filemapper = filemap.filemapper(self.ui, mappath)
+
+        if filemapper.rename:
+            raise util.Abort('filemap renaming is unsupported!')
+
+        return filemapper
+
     def find(self, rev=None, base=False, p4rev=None, abort=True):
         '''Find the most recent revision which has the p4 extra data which
         gives the p4 changelist it was converted from. If base is True then
@@ -557,7 +572,7 @@ class p4client(object):
         if not path.startswith(self.rootpart):
             raise util.Abort(_('invalid p4 local path %s') % path)
 
-        return path[len(self.rootpart):]
+        return self.filemapper(path[len(self.rootpart):])
 
     def localpath(self, path):
         'Convert a path relative to the hg root to a path in the p4 workarea'
@@ -715,7 +730,9 @@ class p4client(object):
         if local and files:
             r.files = []
             for d in self.run('where', files=[f for f in files]):
-                r.files.append(files[d['depotFile']] + (self.repopath(d['path']),))
+                rp = self.repopath(d['path'])
+                if rp:
+                    r.files.append(files[d['depotFile']] + (rp,))
 
         return r
 
@@ -748,6 +765,8 @@ class p4client(object):
                 continue
             else:
                 lf = self.repopath(d['clientFile'])
+                if lf is None:
+                    continue
                 df = d['depotFile']
                 rv = d['headRev']
                 tp = d['headType']
@@ -1354,6 +1373,7 @@ def clone(original, ui, source, dest=Non
         fp.write("keep = %s\n" % client.keep)
         fp.write("lowercasepaths = %s\n" % client.lowercasepaths)
         fp.write("tags = %s\n" % client.tags)
+        fp.write("filemap = %s\n" % ui.config('perfarce', 'filemap', ''))
 
         if client.encoding:
             fp.write("encoding = %s\n" % client.encoding)