1 # Copyright 2014 Dirk Pranke. All rights reserved.
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
16 class Printer(object):
18 def __init__(self, print_, should_overwrite, cols):
20 self.should_overwrite = should_overwrite
29 def update(self, msg, elide=True):
31 if elide and self.cols and msg_len > self.cols - 5:
32 new_len = int((self.cols - 5) / 2)
33 msg = msg[:new_len] + '...' + msg[-new_len:]
34 if self.should_overwrite and self.last_line:
35 self.print_('\r' + ' ' * len(self.last_line) + '\r', end='')
38 self.print_(msg, end='')
39 last_nl = msg.rfind('\n')
40 self.last_line = msg[last_nl + 1:]