+# -*- coding: utf-8 -*-
+
+__copyright__ = """
+Copyright (C) 2007, Karl Hasselström <kha@treskal.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License version 2 as
+published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+"""
+
+import sys
+
+class MessagePrinter(object):
+ def __init__(self):
+ class Output(object):
+ def __init__(self, write, flush):
+ self.write = write
+ self.flush = flush
+ self.at_start_of_line = True
+ self.level = 0
+ def new_line(self):
+ """Ensure that we're at the beginning of a line."""
+ if not self.at_start_of_line:
+ self.write('\n')
+ self.at_start_of_line = True
+ def single_line(self, msg, print_newline = True,
+ need_newline = True):
+ """Write a single line. Newline before and after are
+ separately configurable."""
+ if need_newline:
+ self.new_line()
+ if self.at_start_of_line:
+ self.write(' '*self.level)
+ self.write(msg)
+ if print_newline:
+ self.write('\n')
+ self.at_start_of_line = True
+ else:
+ self.flush()
+ self.at_start_of_line = False
+ def tagged_lines(self, tag, lines):
+ tag += ': '
+ for line in lines:
+ self.single_line(tag + line)
+ tag = ' '*len(tag)
+ def write_line(self, line):
+ """Write one line of text on a lines of its own, not
+ indented."""
+ self.new_line()
+ self.write('%s\n' % line)
+ self.at_start_of_line = True
+ def write_raw(self, string):
+ """Write an arbitrary string, possibly containing
+ newlines."""
+ self.new_line()
+ self.write(string)
+ self.at_start_of_line = string.endswith('\n')
+ self.__stdout = Output(sys.stdout.write, sys.stdout.flush)
+ if sys.stdout.isatty():
+ self.__out = self.__stdout
+ else:
+ self.__out = Output(lambda msg: None, lambda: None)
+ def stdout(self, line):
+ """Write a line to stdout."""
+ self.__stdout.write_line(line)
+ def stdout_raw(self, string):
+ """Write a string possibly containing newlines to stdout."""
+ self.__stdout.write_raw(string)
+ def info(self, *msgs):
+ for msg in msgs:
+ self.__out.single_line(msg)
+ def note(self, *msgs):
+ self.__out.tagged_lines('Notice', msgs)
+ def warn(self, *msgs):
+ self.__out.tagged_lines('Warning', msgs)
+ def error(self, *msgs):
+ self.__out.tagged_lines('Error', msgs)
+ def start(self, msg):
+ """Start a long-running operation."""
+ self.__out.single_line('%s ... ' % msg, print_newline = False)
+ self.__out.level += 1
+ def done(self, extramsg = None):
+ """Finish long-running operation."""
+ self.__out.level -= 1
+ if extramsg:
+ msg = 'done (%s)' % extramsg
+ else:
+ msg = 'done'
+ self.__out.single_line(msg, need_newline = False)
+
+out = MessagePrinter()
~mdw / stgit / commitdiff