relink/progress: Adding progress for collecting stage

[timeless]

That patch applies to a well known number, this progress is more wishywashy.
I expect mozilla will continue to grow both dead and alive files, so I
think using 3:2 is better than overflowing 7:5.

# HG changeset patch
# User timeless <timeless at gmail.com>
# Date 1276176906 -7200
# Node ID 6183853310e779afe413b11308a07b62ebd1983b
# Parent  cdc2f94f0fa97e8bae74dc456cd62a4f9ef21080
relink/progress: Adding progress for collecting stage

diff --git a/hgext/relink.py b/hgext/relink.py
--- a/hgext/relink.py
+++ b/hgext/relink.py
@@ -48,7 +48,7 @@ def relink(ui, repo, origin=None, **opts
     try:
         remotelock = src.lock()
         try:
-            candidates = sorted(collect(src.store.path, ui))
+            candidates = sorted(collect(src, ui))
             targets = prune(candidates, src.store.path, repo.store.path, ui)
             do_relink(src.store.path, repo.store.path, targets, ui)
         finally:
@@ -59,16 +59,29 @@ def relink(ui, repo, origin=None, **opts
 def collect(src, ui):
     seplen = len(os.path.sep)
     candidates = []
+    total = len(src['tip'].manifest())
+    # Your average repository has some files which were deleted before the
+    # tip revision, we account for that by assuming that there are 3 tracked
+    # files for every 2 live files as of the tip version of the repository.
+    #
+    # mozilla-central as of 2010-06-10 had a ratio of just over 7:5.
+    total *= 3
+    total /= 2
+    src = src.store.path
+    pos = 0
     for dirpath, dirnames, filenames in os.walk(src):
         relpath = dirpath[len(src) + seplen:]
         for filename in filenames:
+            pos += 1
             if not filename[-2:] in ('.d', '.i'):
                 continue
             st = os.stat(os.path.join(dirpath, filename))
             if not stat.S_ISREG(st.st_mode):
                 continue
             candidates.append((os.path.join(relpath, filename), st))
+            ui.progress(_('collecting'), pos, filename, _(' files'), total)

+    ui.progress(_('collecting'), None)
     ui.status(_('collected %d candidate storage files\n') % len(candidates))
     return candidates