1 files changed, 54 insertions, 0 deletions
diff --git a/utils/checkpackagelib/lib.py b/utils/checkpackagelib/lib.py
new file mode 100644
index 0000000000..91f4ad49b7
--- /dev/null
+++ b/utils/checkpackagelib/lib.py
@@ -0,0 +1,54 @@
+# See utils/checkpackagelib/readme.txt before editing this file.
+
+from base import _CheckFunction
+
+
+class ConsecutiveEmptyLines(_CheckFunction):
+    def before(self):
+        self.lastline = "non empty"
+
+    def check_line(self, lineno, text):
+        if text.strip() == "" == self.lastline.strip():
+            return ["{}:{}: consecutive empty lines"
+                    .format(self.filename, lineno)]
+        self.lastline = text
+
+
+class EmptyLastLine(_CheckFunction):
+    def before(self):
+        self.lastlineno = 0
+        self.lastline = "non empty"
+
+    def check_line(self, lineno, text):
+        self.lastlineno = lineno
+        self.lastline = text
+
+    def after(self):
+        if self.lastline.strip() == "":
+            return ["{}:{}: empty line at end of file"
+                    .format(self.filename, self.lastlineno)]
+
+
+class NewlineAtEof(_CheckFunction):
+    def before(self):
+        self.lastlineno = 0
+        self.lastline = "\n"
+
+    def check_line(self, lineno, text):
+        self.lastlineno = lineno
+        self.lastline = text
+
+    def after(self):
+        if self.lastline == self.lastline.rstrip("\r\n"):
+            return ["{}:{}: missing newline at end of file"
+                    .format(self.filename, self.lastlineno),
+                    self.lastline]
+
+
+class TrailingSpace(_CheckFunction):
+    def check_line(self, lineno, text):
+        line = text.rstrip("\r\n")
+        if line != line.rstrip():
+            return ["{}:{}: line contains trailing whitespace"
+                    .format(self.filename, lineno),
+                    text]