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-rw-r--r--cloudinit/templater.py41
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+# vi: ts=4 expandtab
+#
+# Copyright (C) 2012 Canonical Ltd.
+# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
+# Copyright (C) 2012 Yahoo! Inc.
+#
+# Author: Scott Moser <scott.moser@canonical.com>
+# Author: Juerg Haefliger <juerg.haefliger@hp.com>
+# Author: Joshua Harlow <harlowja@yahoo-inc.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 3, as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+from tempita import Template
+
+from cloudinit import util
+
+
+def render_from_file(fn, params):
+ return render_string(util.load_file(fn), params, name=fn)
+
+
+def render_to_file(fn, outfn, params, mode=0644):
+ contents = render_from_file(fn, params)
+ util.write_file(outfn, contents, mode=mode)
+
+
+def render_string(content, params, name=None):
+ tpl = Template(content, name=name)
+ if not params:
+ params = dict()
+ return tpl.substitute(params)