# HG changeset patch
# User Patrick Mezard <pmezard@gmail.com>
# Date 2009-12-13 17:06:24
# Node ID f780b1098efc0bdecae92966ab56eb8808e1d402
# Parent  9dd4e2859482d4915658371f3dc94aa7adfb084d

templatekw: change {file_copies} behaviour, add {file_copies_switch}

{file_copies} template now displays file copies with or without the --copies
switch being set. A new {file_copies_switch} template implements the former
behaviour.

diff --git a/mercurial/cmdutil.py b/mercurial/cmdutil.py
--- a/mercurial/cmdutil.py
+++ b/mercurial/cmdutil.py
@@ -651,7 +651,7 @@ class changeset_printer(object):
             return 1
         return 0
 
-    def show(self, ctx, copies=(), **props):
+    def show(self, ctx, copies=None, **props):
         if self.buffered:
             self.ui.pushbuffer()
             self._show(ctx, copies, props)
diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -10,7 +10,7 @@ from lock import release
 from i18n import _, gettext
 import os, re, sys, difflib, time, tempfile
 import hg, util, revlog, bundlerepo, extensions, copies, error
-import patch, help, mdiff, url, encoding
+import patch, help, mdiff, url, encoding, templatekw
 import archival, changegroup, cmdutil, sshserver, hbisect
 from hgweb import server
 import merge as merge_
@@ -2018,34 +2018,9 @@ def log(ui, repo, *pats, **opts):
     limit = cmdutil.loglimit(opts)
     count = 0
 
+    endrev = None
     if opts.get('copies') and opts.get('rev'):
         endrev = max(cmdutil.revrange(repo, opts.get('rev'))) + 1
-    else:
-        endrev = len(repo)
-    rcache = {}
-    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
-                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].renamed()
-        except error.LookupError:
-            return None
 
     df = False
     if opts["date"]:
@@ -2075,8 +2050,10 @@ def log(ui, repo, *pats, **opts):
             else:
                 return
 
-        copies = []
+        copies = None
         if opts.get('copies') and rev:
+            copies = []
+            getrenamed = templatekw.getrenamedfn(repo, endrev=endrev)
             for fn in ctx.files():
                 rename = getrenamed(fn, rev)
                 if rename:
diff --git a/mercurial/templatekw.py b/mercurial/templatekw.py
--- a/mercurial/templatekw.py
+++ b/mercurial/templatekw.py
@@ -6,7 +6,7 @@
 # GNU General Public License version 2, incorporated herein by reference.
 
 from node import hex
-import encoding, patch, util
+import encoding, patch, util, error
 
 def showlist(templ, name, values, plural=None, **args):
     '''expand set of values.
@@ -108,6 +108,38 @@ def getlatesttags(repo, ctx, cache):
         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
+                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].renamed()
+        except error.LookupError:
+            return None
+
+    return getrenamed
+
+
 def showauthor(repo, ctx, templ, **args):
     return ctx.user()
 
@@ -141,8 +173,27 @@ def showextras(repo, ctx, templ, **args)
 def showfileadds(repo, ctx, templ, revcache, **args):
     return showlist(templ, 'file_add', getfiles(repo, ctx, revcache)[1], **args)
 
-def showfilecopies(repo, ctx, templ, revcache, **args):
-    c = [{'name': x[0], 'source': x[1]} for x in revcache['copies']]
+def showfilecopies(repo, ctx, templ, cache, revcache, **args):
+    copies = revcache.get('copies')
+    if copies is None:
+        if 'getrenamed' not in cache:
+            cache['getrenamed'] = getrenamedfn(repo)
+        copies = []
+        getrenamed = cache['getrenamed']
+        for fn in ctx.files():
+            rename = getrenamed(fn, ctx.rev())
+            if rename:
+                copies.append((fn, rename[0]))
+            
+    c = [{'name': x[0], 'source': x[1]} for x in copies]
+    return showlist(templ, 'file_copy', c, plural='file_copies', **args)
+
+# showfilecopiesswitch() displays file copies only if copy records are
+# provided before calling the templater, usually with a --copies
+# command line switch.
+def showfilecopiesswitch(repo, ctx, templ, cache, revcache, **args):
+    copies = revcache.get('copies') or []
+    c = [{'name': x[0], 'source': x[1]} for x in copies]
     return showlist(templ, 'file_copy', c, plural='file_copies', **args)
 
 def showfiledels(repo, ctx, templ, revcache, **args):
@@ -184,6 +235,7 @@ keywords = {
     'extras': showextras,
     'file_adds': showfileadds,
     'file_copies': showfilecopies,
+    'file_copies_switch': showfilecopiesswitch,
     'file_dels': showfiledels,
     'file_mods': showfilemods,
     'files': showfiles,
diff --git a/mercurial/templates/map-cmdline.default b/mercurial/templates/map-cmdline.default
--- a/mercurial/templates/map-cmdline.default
+++ b/mercurial/templates/map-cmdline.default
@@ -1,7 +1,7 @@
 changeset = 'changeset:   {rev}:{node|short}\n{branches}{tags}{parents}user:        {author}\ndate:        {date|date}\nsummary:     {desc|firstline}\n\n'
 changeset_quiet = '{rev}:{node|short}\n'
-changeset_verbose = 'changeset:   {rev}:{node|short}\n{branches}{tags}{parents}user:        {author}\ndate:        {date|date}\n{files}{file_copies}description:\n{desc|strip}\n\n\n'
-changeset_debug = 'changeset:   {rev}:{node}\n{branches}{tags}{parents}{manifest}user:        {author}\ndate:        {date|date}\n{file_mods}{file_adds}{file_dels}{file_copies}{extras}description:\n{desc|strip}\n\n\n'
+changeset_verbose = 'changeset:   {rev}:{node|short}\n{branches}{tags}{parents}user:        {author}\ndate:        {date|date}\n{files}{file_copies_switch}description:\n{desc|strip}\n\n\n'
+changeset_debug = 'changeset:   {rev}:{node}\n{branches}{tags}{parents}{manifest}user:        {author}\ndate:        {date|date}\n{file_mods}{file_adds}{file_dels}{file_copies_switch}{extras}description:\n{desc|strip}\n\n\n'
 start_files = 'files:      '
 file = ' {file}'
 end_files = '\n'
@@ -14,9 +14,9 @@ end_file_adds = '\n'
 start_file_dels = 'files-:     '
 file_del = ' {file_del}'
 end_file_dels = '\n'
-start_file_copies = 'copies:     '
+start_file_copies_switch = 'copies:     '
 file_copy = ' {name} ({source})'
-end_file_copies = '\n'
+end_file_copies_switch = '\n'
 parent = 'parent:      {rev}:{node|formatnode}\n'
 manifest = 'manifest:    {rev}:{node}\n'
 branch = 'branch:      {branch}\n'
diff --git a/tests/test-command-template b/tests/test-command-template
--- a/tests/test-command-template
+++ b/tests/test-command-template
@@ -94,8 +94,8 @@ cat changelog
 
 echo "# keys work"
 for key in author branches date desc file_adds file_dels file_mods \
-        'file_copies%filecopy' files manifest node parents rev tags diffstat \
-        extras; do
+        'file_copies%filecopy' 'file_copies_switch%filecopy' files \
+        manifest node parents rev tags diffstat extras; do
     for mode in '' --verbose --debug; do
         hg log $mode --template "$key$mode: {$key}\n"
     done
diff --git a/tests/test-command-template.out b/tests/test-command-template.out
--- a/tests/test-command-template.out
+++ b/tests/test-command-template.out
@@ -380,7 +380,7 @@ file_mods--debug: c
 file_mods--debug: 
 file_mods--debug: 
 file_mods--debug: 
-file_copies%filecopy: 
+file_copies%filecopy: fourth (second)
 file_copies%filecopy: 
 file_copies%filecopy: 
 file_copies%filecopy: 
@@ -389,7 +389,7 @@ file_copies%filecopy:
 file_copies%filecopy: 
 file_copies%filecopy: 
 file_copies%filecopy: 
-file_copies%filecopy--verbose: 
+file_copies%filecopy--verbose: fourth (second)
 file_copies%filecopy--verbose: 
 file_copies%filecopy--verbose: 
 file_copies%filecopy--verbose: 
@@ -398,6 +398,7 @@ file_copies%filecopy--verbose:
 file_copies%filecopy--verbose: 
 file_copies%filecopy--verbose: 
 file_copies%filecopy--verbose: 
+file_copies%filecopy--debug: fourth (second)
 file_copies%filecopy--debug: 
 file_copies%filecopy--debug: 
 file_copies%filecopy--debug: 
@@ -406,7 +407,33 @@ file_copies%filecopy--debug:
 file_copies%filecopy--debug: 
 file_copies%filecopy--debug: 
 file_copies%filecopy--debug: 
-file_copies%filecopy--debug: 
+file_copies_switch%filecopy: 
+file_copies_switch%filecopy: 
+file_copies_switch%filecopy: 
+file_copies_switch%filecopy: 
+file_copies_switch%filecopy: 
+file_copies_switch%filecopy: 
+file_copies_switch%filecopy: 
+file_copies_switch%filecopy: 
+file_copies_switch%filecopy: 
+file_copies_switch%filecopy--verbose: 
+file_copies_switch%filecopy--verbose: 
+file_copies_switch%filecopy--verbose: 
+file_copies_switch%filecopy--verbose: 
+file_copies_switch%filecopy--verbose: 
+file_copies_switch%filecopy--verbose: 
+file_copies_switch%filecopy--verbose: 
+file_copies_switch%filecopy--verbose: 
+file_copies_switch%filecopy--verbose: 
+file_copies_switch%filecopy--debug: 
+file_copies_switch%filecopy--debug: 
+file_copies_switch%filecopy--debug: 
+file_copies_switch%filecopy--debug: 
+file_copies_switch%filecopy--debug: 
+file_copies_switch%filecopy--debug: 
+file_copies_switch%filecopy--debug: 
+file_copies_switch%filecopy--debug: 
+file_copies_switch%filecopy--debug: 
 files: fourth second third
 files: second
 files: 
diff --git a/tests/test-git-import b/tests/test-git-import
--- a/tests/test-git-import
+++ b/tests/test-git-import
@@ -141,7 +141,7 @@ diff --git a/rename2 b/rename3-2
 rename from rename2
 rename to rename3-2
 EOF
-hg log -vCr. --template '{rev} {files} / {file_copies%filecopy}\n'
+hg log -vr. --template '{rev} {files} / {file_copies%filecopy}\n'
 
 hg locate rename2 rename3 rename3-2
 hg cat rename3
diff --git a/tests/test-log b/tests/test-log
--- a/tests/test-log
+++ b/tests/test-log
@@ -31,20 +31,24 @@ hg log -vf a
 echo % many renames
 hg log -vf e
 
-echo % log copies
+echo '% log copies with --copies'
 hg log -vC --template '{rev} {file_copies%filecopy}\n'
+echo '% log copies switch without --copies'
+hg log -v --template '{rev} {file_copies_switch%filecopy}\n'
+echo '% log copies switch with --copies'
+hg log -vC --template '{rev} {file_copies_switch%filecopy}\n'
 
 echo % log copies, non-linear manifest
 hg up -C 3
 hg mv dir/b e
 echo foo > foo
 hg ci -Ame2 -d '6 0'
-hg log -vC --template '{rev} {file_copies%filecopy}\n' -r 5
+hg log -v --template '{rev} {file_copies%filecopy}\n' -r 5
 
 echo % log copies, execute bit set
 chmod +x e
 hg ci -me3 -d '7 0'
-hg log -vC --template '{rev} {file_copies%filecopy}\n' -r 6
+hg log -v --template '{rev} {file_copies%filecopy}\n' -r 6
 
 echo '% log -p d'
 hg log -pv d
diff --git a/tests/test-log.out b/tests/test-log.out
--- a/tests/test-log.out
+++ b/tests/test-log.out
@@ -76,7 +76,19 @@ description:
 a
 
 
-% log copies
+% log copies with --copies
+4 e (dir/b)
+3 b (a)
+2 dir/b (b)
+1 b (a)
+0 
+% log copies switch without --copies
+4 
+3 
+2 
+1 
+0 
+% log copies switch with --copies
 4 e (dir/b)
 3 b (a)
 2 dir/b (b)
diff --git a/tests/test-mq b/tests/test-mq
--- a/tests/test-mq
+++ b/tests/test-mq
@@ -387,10 +387,10 @@ hg ci -m 'change foo'
 hg up -C 1
 hg qrefresh --git 2>&1 | grep -v 'saving bundle'
 cat .hg/patches/bar
-hg log -vC --template '{rev} {file_copies%filecopy}\n' -r .
+hg log -v --template '{rev} {file_copies%filecopy}\n' -r .
 hg qrefresh --git
 cat .hg/patches/bar
-hg log -vC --template '{rev} {file_copies%filecopy}\n' -r .
+hg log -v --template '{rev} {file_copies%filecopy}\n' -r .
 hg qrefresh
 grep 'diff --git' .hg/patches/bar
 
@@ -403,12 +403,12 @@ hg mv bar quux
 hg mv baz bleh
 hg qrefresh --git 2>&1 | grep -v 'saving bundle'
 cat .hg/patches/bar
-hg log -vC --template '{rev} {file_copies%filecopy}\n' -r .
+hg log -v --template '{rev} {file_copies%filecopy}\n' -r .
 hg mv quux fred
 hg mv bleh barney
 hg qrefresh --git
 cat .hg/patches/bar
-hg log -vC --template '{rev} {file_copies%filecopy}\n' -r .
+hg log -v --template '{rev} {file_copies%filecopy}\n' -r .
 
 echo % refresh omitting an added file
 hg qnew baz