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""" Provide the Reporter class. """ import re import sys class Reporter: """ Formats the results of pyflakes checks to users. """ def __init__(self, warningStream, errorStream): """ Construct a L{Reporter}. @param warningStream: A file-like object where warnings will be written to. The stream's C{write} method must accept unicode. C{sys.stdout} is a good value. @param errorStream: A file-like object where error output will be written to. The stream's C{write} method must accept unicode. C{sys.stderr} is a good value. """ self._stdout = warningStream self._stderr = errorStream def unexpectedError(self, filename, msg): """ An unexpected error occurred trying to process C{filename}. @param filename: The path to a file that we could not process. @ptype filename: C{unicode} @param msg: A message explaining the problem. @ptype msg: C{unicode} """ self._stderr.write(f"{filename}: {msg}\n") def syntaxError(self, filename, msg, lineno, offset, text): """ There was a syntax error in C{filename}. @param filename: The path to the file with the syntax error. @ptype filename: C{unicode} @param msg: An explanation of the syntax error. @ptype msg: C{unicode} @param lineno: The line number where the syntax error occurred. @ptype lineno: C{int} @param offset: The column on which the syntax error occurred, or None. @ptype offset: C{int} @param text: The source code containing the syntax error. @ptype text: C{unicode} """ if text is None: line = None else: line = text.splitlines()[-1] # lineno might be 0 if the error came from stdin lineno = max(lineno, 1) if offset is not None: if sys.version_info < (3, 8) and text is not None: offset = offset - (len(text) - len(line)) + 1 # some versions of python emit an offset of -1 for certain encoding errors offset = max(offset, 1) self._stderr.write('%s:%d:%d: %s\n' % (filename, lineno, offset, msg)) else: self._stderr.write('%s:%d: %s\n' % (filename, lineno, msg)) if line is not None: self._stderr.write(line) self._stderr.write('\n') if offset is not None: self._stderr.write(re.sub(r'\S', ' ', line[:offset - 1]) + "^\n") def flake(self, message): """ pyflakes found something wrong with the code. @param: A L{pyflakes.messages.Message}. """ self._stdout.write(str(message)) self._stdout.write('\n') def _makeDefaultReporter(): """ Make a reporter that can be used when no reporter is specified. """ return Reporter(sys.stdout, sys.stderr)