Add new 'typ' python testing framework to third_party/.

third_party/typ/typ/printer.py

Index: third_party/typ/typ/printer.py
diff --git a/third_party/typ/typ/printer.py b/third_party/typ/typ/printer.py
new file mode 100644
index 0000000000000000000000000000000000000000..473537b1181d4a6ac378242fcbd607b7e4defd16
--- /dev/null
+++ b/third_party/typ/typ/printer.py
@@ -0,0 +1,40 @@
+# Copyright 2014 Dirk Pranke. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+class Printer(object):
+
+    def __init__(self, print_, should_overwrite, cols):
+        self.print_ = print_
+        self.should_overwrite = should_overwrite
+        self.cols = cols
+        self.last_line = ''
+
+    def flush(self):
+        if self.last_line:
+            self.print_('')
+            self.last_line = ''
+
+    def update(self, msg, elide=True):
+        msg_len = len(msg)
+        if elide and self.cols and msg_len > self.cols - 5:
+            new_len = int((self.cols - 5) / 2)
+            msg = msg[:new_len] + '...' + msg[-new_len:]
+        if self.should_overwrite and self.last_line:
+            self.print_('\r' + ' ' * len(self.last_line) + '\r', end='')
+        elif self.last_line:
+            self.print_('')
+        self.print_(msg, end='')
+        last_nl = msg.rfind('\n')
+        self.last_line = msg[last_nl + 1:]