1 files changed, 45 insertions, 0 deletions
diff --git a/debian/lib/python/debian_linux/abi.py b/debian/lib/python/debian_linux/abi.py
new file mode 100644
index 000000000..abaaeeaa9
--- /dev/null
+++ b/debian/lib/python/debian_linux/abi.py
@@ -0,0 +1,45 @@
+class Symbol(object):
+    def __init__(self, name, namespace, module, version, export):
+        self.name, self.namespace, self.module = name, namespace, module
+        self.version, self.export = version, export
+
+    def __eq__(self, other):
+        if not isinstance(other, Symbol):
+            return NotImplemented
+
+        # Symbols are resolved to modules by depmod at installation/
+        # upgrade time, not compile time, so moving a symbol between
+        # modules is not an ABI change.  Compare everything else.
+        if self.name != other.name:
+            return False
+        if self.namespace != other.namespace:
+            return False
+        if self.version != other.version:
+            return False
+        if self.export != other.export:
+            return False
+
+        return True
+
+    def __ne__(self, other):
+        ret = self.__eq__(other)
+        if ret is NotImplemented:
+            return ret
+        return not ret
+
+
+class Symbols(dict):
+    def __init__(self, file=None):
+        if file:
+            self.read(file)
+
+    def read(self, file):
+        for line in file:
+            version, name, module, export, namespace = \
+                line.strip('\r\n').split('\t')
+            self[name] = Symbol(name, namespace, module, version, export)
+
+    def write(self, file):
+        for s in sorted(self.values(), key=lambda i: i.name):
+            file.write("%s\t%s\t%s\t%s\t%s\n" %
+                       (s.version, s.name, s.module, s.export, s.namespace))