[PATCH v2 08/12] add PerfRepoUtils

[Ondrej Lichtner]

From: Ondrej Lichtner <olichtne(a)redhat.com&gt;

This module will contain helper functions for PerfRepo integration.
The first two functions are:
parse_id_mapping(filename)
get_id(mapping, key)

These will be used to work with mapping files that are required for full
support of PerfRepo. The plan is to have this functionality in a single
class, but for now these two functions are sufficient.

Signed-off-by: Ondrej Lichtner <olichtne(a)redhat.com&gt;
---
 lnst/Controller/PerfRepoUtils.py | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 lnst/Controller/PerfRepoUtils.py

diff --git a/lnst/Controller/PerfRepoUtils.py b/lnst/Controller/PerfRepoUtils.py
new file mode 100644
index 0000000..4ae38b1
--- /dev/null
+++ b/lnst/Controller/PerfRepoUtils.py
@@ -0,0 +1,33 @@
+"""
+This module contains helper functions useful when writing recipes
+that use PerfRepo.
+
+Copyright 2015 Red Hat, Inc.
+Licensed under the GNU General Public License, version 2 as
+published by the Free Software Foundation; see COPYING for details.
+"""
+
+__author__ = """
+olichtne(a)redhat.com (Ondrej Lichtner)
+"""
+
+import re
+
+def parse_id_mapping(filename):
+    line_re = re.compile(r"^(\w+)\s*=\s*(\w+)$")
+    res_dict = {}
+    try:
+        with open(filename) as f:
+            for line in f:
+                match = line_re.match(line)
+                if match is not None:
+                    res_dict[match.group(1)] = match.group(2)
+    except:
+        return None
+    return res_dict
+
+def get_id(mapping, key):
+    try:
+        return mapping[key]
+    except (KeyError, TypeError):
+        return None
-- 
2.1.0