patchtest: add supporting modules

Add modules that support core patchtest functionality to
meta/lib/patchtest. These include classes and functions for handling
repository and patch objects, parsing the patchtest CLI arguments, and
other utilities.

(From OE-Core rev: 499cdad7a16f6cc256837069c7add294132127a4)

Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/patchtest/patch.py

@@ -0,0 +1,73 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# patchtestpatch: PatchTestPatch class which abstracts a patch file
+#
+# Copyright (C) 2016 Intel Corporation
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 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, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+
+import logging
+import utils
+
+logger = logging.getLogger('patchtest')
+
+class PatchTestPatch(object):
+    MERGE_STATUS_INVALID = 'INVALID'
+    MERGE_STATUS_NOT_MERGED = 'NOTMERGED'
+    MERGE_STATUS_MERGED_SUCCESSFULL = 'PASS'
+    MERGE_STATUS_MERGED_FAIL = 'FAIL'
+    MERGE_STATUS = (MERGE_STATUS_INVALID,
+                    MERGE_STATUS_NOT_MERGED,
+                    MERGE_STATUS_MERGED_SUCCESSFULL,
+                    MERGE_STATUS_MERGED_FAIL)
+
+    def __init__(self, path, forcereload=False):
+        self._path = path
+        self._forcereload = forcereload
+
+        self._contents = None
+        self._branch = None
+        self._merge_status = PatchTestPatch.MERGE_STATUS_NOT_MERGED
+
+    @property
+    def contents(self):
+        if self._forcereload or (not self._contents):
+            logger.debug('Reading %s contents' % self._path)
+            try:
+                with open(self._path, newline='') as _f:
+                    self._contents = _f.read()
+            except IOError:
+                logger.warn("Reading the mbox %s failed" % self.resource)
+        return self._contents
+
+    @property
+    def path(self):
+        return self._path
+
+    @property
+    def branch(self):
+        if not self._branch:
+            self._branch = utils.get_branch(self._path)
+        return self._branch
+
+    def setmergestatus(self, status):
+        self._merge_status = status
+
+    def getmergestatus(self):
+        return self._merge_status
+
+    merge_status = property(getmergestatus, setmergestatus)
+