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Thomas De Schampheleire

validators: don't catch all Exceptions as invalid clone URIs, be specific

When adding a new repository with a remote clone URI, the URI will be
validated in some way. Several exceptions could occur during that
validation.

Previously, the code would catch based on 'Exception', which means that
_any_ exception would cause the URI to be found invalid. This means that
errors in the code (e.g. related to Python 3 conversion) were also
categorized as 'invalid clone URI'. And thus, the tests that test an
actually invalid URI would pass, even though there was a bug.

Now, things have been refactored so it only is relevant to catch
InvalidCloneUriException. Any other exception will now yield a 500 Internal
Server Error, as expected.

#!/usr/bin/env python3
"""
pyflakes with filter configuration for Kallithea.
Inspired by pyflakes/api.py and flake8/plugins/pyflakes.py .
"""

import sys
import pyflakes.api
import pyflakes.messages

class Reporter:

    warned = False

    def flake(self, warning):
        # ignore known warnings
        if isinstance(warning, pyflakes.messages.UnusedVariable):
            return
        if warning.filename == 'kallithea/bin/kallithea_cli_ishell.py':
            if isinstance(warning, pyflakes.messages.ImportStarUsed) and warning.message_args == ('kallithea.model.db',):
                return
            if isinstance(warning, pyflakes.messages.UnusedImport) and warning.message_args == ('kallithea.model.db.*',):
                return

        print('%s:%s %s   [%s %s]' % (warning.filename, warning.lineno, warning.message % warning.message_args, type(warning).__name__, warning.message_args))
        self.warned = True

    def unexpectedError(self, filename, msg):
        print('Unexpected error for %s: %s' % (filename, msg))


reporter = Reporter()

for filename in sorted(set(sys.argv[1:])):
    pyflakes.api.checkPath(filename, reporter=reporter)
if reporter.warned:
    raise SystemExit(1)