* donate-cpu-server.py: Use tools to prepare code to work with Python 3
The following commands were used for these changes:
futurize -1 -w donate-cpu-server.py
2to3 -w donate-cpu-server.py
* Make the server work under Python 3
Manually fixed the Unicode issues. Received data is decoded, sent data
is encoded.
* Add backward compatible type hints (in comments)
This enables better static analysis and suggestions in an IDE.
* Fix Pylint warning "Comparison to literal"
* .travis.yml: Fix/enhance pylint verification and Python compilation
donate-cpu-server.py is only Python 3 compatible, so it must be ignored
for pylint verification under Python 2.
All Python scripts that were verified with pylint under Python 2 are
now also verified with pylint under Python 3.
* donate-cpu-server.py: Add shebang and mark script as executable
* start_donate_cpu_server_test_local.sh: Directly execute server
Since the server script is executable now and has a shebang it can
be directly executed.
* Use Python 3.0 function annotations instead of comment type hints
Reference: https://www.python.org/dev/peps/pep-3107/
The client script will exit after the specified number of packages
have been processed. 0 means infinitely.
Useful for example to regularly quit the script, check for updates to
the client and start it again. Or as an alternative to the `--stop-time`
argument.
Python 3 directly decodes the text when it is read(). If there is any
invalid UTF-8 character in the text an exception is thrown (IIRC it is
UnicodeDecodeError). Opening the file with `error='ignore'` avoids
throwing an exception and just ignores the invalid character. Since
this is only possible since Python version 3 there must be extra code
for older versions.
The test script has been enhanced. It now also uses a package which
contains a file with at least one invalid UTF-8 character.
Indirectly the scripts (at first the server test script) also document what needs to be done to setup a (local) server.
The productive client script can be used by everyone who wants to support daca@home, not only for testing. But i still think it is good to have it under /test to not lose too much clarity / lucidity in the /tools directory.
Sebastian