| # -*- coding: ascii -*- |
| # |
| # Copyright 2007, 2008, 2009, 2010, 2011 |
| # Andr\xe9 Malo or his licensors, as applicable |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| """ |
| ================= |
| Terminal writer |
| ================= |
| """ |
| __author__ = "Andr\xe9 Malo" |
| __docformat__ = "restructuredtext en" |
| |
| import sys as _sys |
| |
| |
| class _INFO(dict): |
| """ Terminal info dict """ |
| |
| def __init__(self): |
| """ Initialization """ |
| dict.__init__(self, { |
| 'NORMAL': '', |
| 'BOLD': '', |
| 'ERASE': '\n', |
| 'RED': '', |
| 'YELLOW': '', |
| 'GREEN': '', |
| }) |
| try: |
| import curses as _curses |
| except ImportError: |
| # fixup if a submodule of curses failed. |
| if 'curses' in _sys.modules: |
| del _sys.modules['curses'] |
| else: |
| try: |
| _curses.setupterm() |
| except (TypeError, _curses.error): |
| pass |
| else: |
| def make_color(color): |
| """ Make color control string """ |
| seq = _curses.tigetstr('setaf').decode('ascii') |
| if seq is not None: |
| # XXX may fail - need better logic |
| seq = seq.replace("%p1", "") % color |
| return seq |
| |
| self['NORMAL'] = _curses.tigetstr('sgr0').decode('ascii') |
| self['BOLD'] = _curses.tigetstr('bold').decode('ascii') |
| |
| erase = _curses.tigetstr('el1').decode('ascii') |
| if erase is not None: |
| self['ERASE'] = erase + \ |
| _curses.tigetstr('cr').decode('ascii') |
| |
| self['RED'] = make_color(_curses.COLOR_RED) |
| self['YELLOW'] = make_color(_curses.COLOR_YELLOW) |
| self['GREEN'] = make_color(_curses.COLOR_GREEN) |
| |
| def __getitem__(self, key): |
| """ Deliver always """ |
| dict.get(self, key) or "" |
| |
| |
| def terminfo(): |
| """ Get info singleton """ |
| # pylint: disable = E1101, W0612 |
| if terminfo.info is None: |
| terminfo.info = _INFO() |
| return terminfo.info |
| terminfo.info = None |
| |
| |
| def write(fmt, **kwargs): |
| """ Write stuff on the terminal """ |
| parm = dict(terminfo()) |
| parm.update(kwargs) |
| _sys.stdout.write(fmt % parm) |
| _sys.stdout.flush() |
| |
| |
| def green(bmt, **kwargs): |
| """ Write something in green on screen """ |
| announce("%%(GREEN)s%s%%(NORMAL)s" % bmt, **kwargs) |
| |
| |
| def red(bmt, **kwargs): |
| """ Write something in red on the screen """ |
| announce("%%(BOLD)s%%(RED)s%s%%(NORMAL)s" % bmt, **kwargs) |
| |
| |
| def yellow(fmt, **kwargs): |
| """ Write something in yellow on the screen """ |
| announce("%%(BOLD)s%%(YELLOW)s%s%%(NORMAL)s" % fmt, **kwargs) |
| |
| |
| def announce(fmt, **kwargs): |
| """ Announce something """ |
| write(fmt, **kwargs) |
| _sys.stdout.write("\n") |
| _sys.stdout.flush() |
| |
| |
