templatekw: move getrenamedfn() to scmutil (API)

The function is already used by `hg log` (for following renames, not
for templates), so it seems it does not belong in templatekw.

Differential Revision: https://phab.mercurial-scm.org/D6021

hgext/remotefilelog/__init__.py

@@ -159,7 +159,6 b' from mercurial import ('
     scmutil,
     smartset,
     streamclone,
-    templatekw,
     util,
 )
 from . import (
@@ -557,7 +556,7 b' def onetimeclientsetup(ui):'
     extensions.wrapfunction(dispatch, 'runcommand', runcommand)
 
     # disappointing hacks below
-    templatekw.getrenamedfn = getrenamedfn
+    scmutil.getrenamedfn = getrenamedfn
     extensions.wrapfunction(revset, 'filelog', filelogrevset)
     revset.symbols['filelog'] = revset.filelog
     extensions.wrapfunction(cmdutil, 'walkfilerevs', walkfilerevs)

mercurial/commands.py

@@ -61,7 +61,6 b' from . import ('
     state as statemod,
     streamclone,
     tags as tagsmod,
-    templatekw,
     ui as uimod,
     util,
     wireprotoserver,
@@ -3884,7 +3883,7 b' def log(ui, repo, *pats, **opts):'
         endrev = None
         if revs:
             endrev = revs.max() + 1
-        getrenamed = templatekw.getrenamedfn(repo, endrev=endrev)
+        getrenamed = scmutil.getrenamedfn(repo, endrev=endrev)
 
     ui.pager('log')
     displayer = logcmdutil.changesetdisplayer(ui, repo, opts, differ,

mercurial/scmutil.py

@@ -1191,6 +1191,37 b' def _markchanges(repo, unknown, deleted,'
         for new, old in renames.iteritems():
             wctx.copy(old, new)
 
+def getrenamedfn(repo, endrev=None):
+    rcache = {}
+    if endrev is None:
+        endrev = len(repo)
+
+    def getrenamed(fn, rev):
+        '''looks up all renames for a file (up to endrev) the first
+        time the file is given. It indexes on the changerev and only
+        parses the manifest if linkrev != changerev.
+        Returns rename info for fn at changerev rev.'''
+        if fn not in rcache:
+            rcache[fn] = {}
+            fl = repo.file(fn)
+            for i in fl:
+                lr = fl.linkrev(i)
+                renamed = fl.renamed(fl.node(i))
+                rcache[fn][lr] = renamed and renamed[0]
+                if lr >= endrev:
+                    break
+        if rev in rcache[fn]:
+            return rcache[fn][rev]
+
+        # If linkrev != rev (i.e. rev not found in rcache) fallback to
+        # filectx logic.
+        try:
+            return repo[rev][fn].copysource()
+        except error.LookupError:
+            return None
+
+    return getrenamed
+
 def dirstatecopy(ui, repo, wctx, src, dst, dryrun=False, cwd=None):
     """Update the dirstate to reflect the intent of copying src to dst. For
     different reasons it might not end with dst being marked as copied from src.

mercurial/templatekw.py

@@ -104,37 +104,6 b' def getlatesttags(context, mapping, patt'
         latesttags[rev] = pdate, pdist + 1, ptag
     return latesttags[rev]
 
-def getrenamedfn(repo, endrev=None):
-    rcache = {}
-    if endrev is None:
-        endrev = len(repo)
-
-    def getrenamed(fn, rev):
-        '''looks up all renames for a file (up to endrev) the first
-        time the file is given. It indexes on the changerev and only
-        parses the manifest if linkrev != changerev.
-        Returns rename info for fn at changerev rev.'''
-        if fn not in rcache:
-            rcache[fn] = {}
-            fl = repo.file(fn)
-            for i in fl:
-                lr = fl.linkrev(i)
-                renamed = fl.renamed(fl.node(i))
-                rcache[fn][lr] = renamed and renamed[0]
-                if lr >= endrev:
-                    break
-        if rev in rcache[fn]:
-            return rcache[fn][rev]
-
-        # If linkrev != rev (i.e. rev not found in rcache) fallback to
-        # filectx logic.
-        try:
-            return repo[rev][fn].copysource()
-        except error.LookupError:
-            return None
-
-    return getrenamed
-
 def getlogcolumns():
     """Return a dict of log column labels"""
     _ = pycompat.identity  # temporarily disable gettext
@@ -343,7 +312,7 b' def showfilecopies(context, mapping):'
     copies = context.resource(mapping, 'revcache').get('copies')
     if copies is None:
         if 'getrenamed' not in cache:
-            cache['getrenamed'] = getrenamedfn(repo)
+            cache['getrenamed'] = scmutil.getrenamedfn(repo)
         copies = []
         getrenamed = cache['getrenamed']
         for fn in ctx.files():