When downloading files from Koji to make a local repository, display
a temporary status of which files are being displayed to the console
appended after any log messages. Updates are done by erasing the status
that was written, adding a log message, then writing the status again.
When running in local mode, add a special handler that filters log
messages to the console to produce attractive output. Implemented
behaviors include:
- INFO level messages are only displayed if done through
MBSLogger.console() rather than MBSLogger.info().
- Timestamps and thread names are omitted unless the local build
is started with the -d option
- Warning/error messages have the level highlighted in red
- Special handling can be added to log messages, initially:
- Long running operations can be displayed to the console as
"Doing foo ... <pause>done"
Logging during a build that occurs before the build directory is created
used to be logged to the console, but not retained in the build log
file. This made referring to the build log file confusing. Solve this
by buffering logs in memory until the log file is created and replaying
them.
A little bit of hackery is needed to avoid saving dangling references to
libsolv objects.
This also includes `from __future__ import absolute_import`
in every file so that the imports are consistent in Python 2 and 3.
The Python 2 tests fail without this.
