# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 1475933066 -7200
# Node ID bd1f043d1ea3b6f7b54b9d7d317ab2b4d104dc2e
# Parent  ebc03e64548a5768cfac67a1674b09a23c577491
templater: add relpath() to convert repo path to relative path (issue5394)

File paths in template are repository-absolute paths. This function can be
used to convert them to filesystem paths relative to cwd. This also converts
'/' to '\\' on Windows.

diff -r ebc03e64548a -r bd1f043d1ea3 mercurial/templater.py
--- a/mercurial/templater.py	Sat Oct 08 19:11:19 2016 +0200
+++ b/mercurial/templater.py	Sat Oct 08 15:24:26 2016 +0200
@@ -713,6 +713,18 @@
         tzoffset = util.makedate()[1]
     return (date[0], tzoffset)
 
+@templatefunc('relpath(path)')
+def relpath(context, mapping, args):
+    """Convert a repository-absolute path into a filesystem path relative to
+    the current working directory."""
+    if len(args) != 1:
+        # i18n: "relpath" is a keyword
+        raise error.ParseError(_("relpath expects one argument"))
+
+    repo = mapping['ctx'].repo()
+    path = evalstring(context, mapping, args[0])
+    return repo.pathto(path)
+
 @templatefunc('revset(query[, formatargs...])')
 def revset(context, mapping, args):
     """Execute a revision set query. See
diff -r ebc03e64548a -r bd1f043d1ea3 tests/test-command-template.t
--- a/tests/test-command-template.t	Sat Oct 08 19:11:19 2016 +0200
+++ b/tests/test-command-template.t	Sat Oct 08 15:24:26 2016 +0200
@@ -3521,6 +3521,15 @@
   0
   
 
+Test relpath function
+
+  $ hg log -r0 -T '{files % "{file|relpath}\n"}'
+  a
+  $ cd ..
+  $ hg log -R r -r0 -T '{files % "{file|relpath}\n"}'
+  r/a (glob)
+  $ cd r
+
 Test active bookmark templating
 
   $ hg book foo