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+Metadata-Version: 1.0
+Name: blessings
+Version: 1.3
+Summary: A thin, practical wrapper around terminal formatting, positioning, and more
+Home-page: https://github.com/erikrose/blessings
+Author: Erik Rose
+Author-email: erikrose@grinchcentral.com
+License: MIT
+Description: =========
+ Blessings
+ =========
+
+ Coding with Blessings looks like this... ::
+
+ from blessings import Terminal
+
+ t = Terminal()
+
+ print t.bold('Hi there!')
+ print t.bold_red_on_bright_green('It hurts my eyes!')
+
+ with t.location(0, t.height - 1):
+ print 'This is at the bottom.'
+
+ Or, for byte-level control, you can drop down and play with raw terminal
+ capabilities::
+
+ print '{t.bold}All your {t.red}bold and red base{t.normal}'.format(t=t)
+ print t.wingo(2)
+
+ The Pitch
+ =========
+
+ Blessings lifts several of curses_' limiting assumptions, and it makes your
+ code pretty, too:
+
+ * Use styles, color, and maybe a little positioning without clearing the whole
+ screen first.
+ * Leave more than one screenful of scrollback in the buffer after your program
+ exits, like a well-behaved command-line app should.
+ * Get rid of all those noisy, C-like calls to ``tigetstr`` and ``tparm``, so
+ your code doesn't get crowded out by terminal bookkeeping.
+ * Act intelligently when somebody redirects your output to a file, omitting the
+ terminal control codes the user doesn't want to see (optional).
+
+ .. _curses: http://docs.python.org/library/curses.html
+
+ Before And After
+ ----------------
+
+ Without Blessings, this is how you'd print some underlined text at the bottom
+ of the screen::
+
+ from curses import tigetstr, setupterm, tparm
+ from fcntl import ioctl
+ from os import isatty
+ import struct
+ import sys
+ from termios import TIOCGWINSZ
+
+ # If we want to tolerate having our output piped to other commands or
+ # files without crashing, we need to do all this branching:
+ if hasattr(sys.stdout, 'fileno') and isatty(sys.stdout.fileno()):
+ setupterm()
+ sc = tigetstr('sc')
+ cup = tigetstr('cup')
+ rc = tigetstr('rc')
+ underline = tigetstr('smul')
+ normal = tigetstr('sgr0')
+ else:
+ sc = cup = rc = underline = normal = ''
+ print sc # Save cursor position.
+ if cup:
+ # tigetnum('lines') doesn't always update promptly, hence this:
+ height = struct.unpack('hhhh', ioctl(0, TIOCGWINSZ, '\000' * 8))[0]
+ print tparm(cup, height - 1, 0) # Move cursor to bottom.
+ print 'This is {under}underlined{normal}!'.format(under=underline,
+ normal=normal)
+ print rc # Restore cursor position.
+
+ Phew! That was long and full of incomprehensible trash! Let's try it again,
+ this time with Blessings::
+
+ from blessings import Terminal
+
+ term = Terminal()
+ with term.location(0, term.height - 1):
+ print 'This is', term.underline('pretty!')
+
+ Much better.
+
+ What It Provides
+ ================
+
+ Blessings provides just one top-level object: ``Terminal``. Instantiating a
+ ``Terminal`` figures out whether you're on a terminal at all and, if so, does
+ any necessary terminal setup. After that, you can proceed to ask it all sorts
+ of things about the terminal. Terminal terminal terminal.
+
+ Simple Formatting
+ -----------------
+
+ Lots of handy formatting codes ("capabilities" in low-level parlance) are
+ available as attributes on a ``Terminal``. For example::
+
+ from blessings import Terminal
+
+ term = Terminal()
+ print 'I am ' + term.bold + 'bold' + term.normal + '!'
+
+ You can also use them as wrappers so you don't have to say ``normal``
+ afterward::
+
+ print 'I am', term.bold('bold') + '!'
+
+ Or, if you want fine-grained control while maintaining some semblance of
+ brevity, you can combine it with Python's string formatting, which makes
+ attributes easy to access::
+
+ print 'All your {t.red}base {t.underline}are belong to us{t.normal}'.format(t=term)
+
+ Simple capabilities of interest include...
+
+ * ``bold``
+ * ``reverse``
+ * ``underline``
+ * ``no_underline`` (which turns off underlining)
+ * ``blink``
+ * ``normal`` (which turns off everything, even colors)
+ * ``clear_eol`` (clear to the end of the line)
+ * ``clear_bol`` (clear to beginning of line)
+ * ``clear_eos`` (clear to end of screen)
+
+ Here are a few more which are less likely to work on all terminals:
+
+ * ``dim``
+ * ``italic`` and ``no_italic``
+ * ``shadow`` and ``no_shadow``
+ * ``standout`` and ``no_standout``
+ * ``subscript`` and ``no_subscript``
+ * ``superscript`` and ``no_superscript``
+ * ``flash`` (which flashes the screen once)
+
+ Note that, while the inverse of ``underline`` is ``no_underline``, the only way
+ to turn off ``bold`` or ``reverse`` is ``normal``, which also cancels any
+ custom colors. This is because there's no way to tell the terminal to undo
+ certain pieces of formatting, even at the lowest level.
+
+ You might notice that the above aren't the typical incomprehensible terminfo
+ capability names; we alias a few of the harder-to-remember ones for
+ readability. However, you aren't limited to these: you can reference any
+ string-returning capability listed on the `terminfo man page`_ by the name
+ under the "Cap-name" column: for example, ``term.rum``.
+
+ .. _`terminfo man page`: http://www.manpagez.com/man/5/terminfo/
+
+ Color
+ -----
+
+ 16 colors, both foreground and background, are available as easy-to-remember
+ attributes::
+
+ from blessings import Terminal
+
+ term = Terminal()
+ print term.red + term.on_green + 'Red on green? Ick!' + term.normal
+ print term.bright_red + term.on_bright_blue + 'This is even worse!' + term.normal
+
+ You can also call them as wrappers, which sets everything back to normal at the
+ end::
+
+ print term.red_on_green('Red on green? Ick!')
+ print term.yellow('I can barely see it.')
+
+ The available colors are...
+
+ * ``black``
+ * ``red``
+ * ``green``
+ * ``yellow``
+ * ``blue``
+ * ``magenta``
+ * ``cyan``
+ * ``white``
+
+ You can set the background color instead of the foreground by prepending
+ ``on_``, as in ``on_blue``. There is also a ``bright`` version of each color:
+ for example, ``on_bright_blue``.
+
+ There is also a numerical interface to colors, which takes an integer from
+ 0-15::
+
+ term.color(5) + 'Hello' + term.normal
+ term.on_color(3) + 'Hello' + term.normal
+
+ term.color(5)('Hello')
+ term.on_color(3)('Hello')
+
+ If some color is unsupported (for instance, if only the normal colors are
+ available, not the bright ones), trying to use it will, on most terminals, have
+ no effect: the foreground and background colors will stay as they were. You can
+ get fancy and do different things depending on the supported colors by checking
+ `number_of_colors`_.
+
+ .. _`number_of_colors`: http://packages.python.org/blessings/#blessings.Terminal.number_of_colors
+
+ Compound Formatting
+ -------------------
+
+ If you want to do lots of crazy formatting all at once, you can just mash it
+ all together::
+
+ from blessings import Terminal
+
+ term = Terminal()
+ print term.bold_underline_green_on_yellow + 'Woo' + term.normal
+
+ Or you can use your newly coined attribute as a wrapper, which implicitly sets
+ everything back to normal afterward::
+
+ print term.bold_underline_green_on_yellow('Woo')
+
+ This compound notation comes in handy if you want to allow users to customize
+ the formatting of your app: just have them pass in a format specifier like
+ "bold_green" on the command line, and do a quick ``getattr(term,
+ that_option)('Your text')`` when you do your formatting.
+
+ I'd be remiss if I didn't credit couleur_, where I probably got the idea for
+ all this mashing.
+
+ .. _couleur: http://pypi.python.org/pypi/couleur
+
+ Parametrized Capabilities
+ -------------------------
+
+ Some capabilities take parameters. Rather than making you dig up ``tparm()``
+ all the time, we simply make such capabilities into callable strings. You can
+ pass the parameters right in::
+
+ from blessings import Terminal
+
+ term = Terminal()
+ print term.move(10, 1)
+
+ Here are some of interest:
+
+ ``move``
+ Position the cursor elsewhere. Parameters are y coordinate, then x
+ coordinate.
+ ``move_x``
+ Move the cursor to the given column.
+ ``move_y``
+ Move the cursor to the given row.
+
+ You can also reference any other string-returning capability listed on the
+ `terminfo man page`_ by its name under the "Cap-name" column.
+
+ .. _`terminfo man page`: http://www.manpagez.com/man/5/terminfo/
+
+ Height and Width
+ ----------------
+
+ It's simple to get the height and width of the terminal, in characters::
+
+ from blessings import Terminal
+
+ term = Terminal()
+ height = term.height
+ width = term.width
+
+ These are newly updated each time you ask for them, so they're safe to use from
+ SIGWINCH handlers.
+
+ Temporary Repositioning
+ -----------------------
+
+ Sometimes you need to flit to a certain location, print something, and then
+ return: for example, when updating a progress bar at the bottom of the screen.
+ ``Terminal`` provides a context manager for doing this concisely::
+
+ from blessings import Terminal
+
+ term = Terminal()
+ with term.location(0, term.height - 1):
+ print 'Here is the bottom.'
+ print 'This is back where I came from.'
+
+ Parameters to ``location()`` are ``x`` and then ``y``, but you can also pass
+ just one of them, leaving the other alone. For example... ::
+
+ with term.location(y=10):
+ print 'We changed just the row.'
+
+ If you want to reposition permanently, see ``move``, in an example above.
+
+ Pipe Savvy
+ ----------
+
+ If your program isn't attached to a terminal, like if it's being piped to
+ another command or redirected to a file, all the capability attributes on
+ ``Terminal`` will return empty strings. You'll get a nice-looking file without
+ any formatting codes gumming up the works.
+
+ If you want to override this--like if you anticipate your program being piped
+ through ``less -r``, which handles terminal escapes just fine--pass
+ ``force_styling=True`` to the ``Terminal`` constructor.
+
+ In any case, there is an ``is_a_tty`` attribute on ``Terminal`` that lets you
+ see whether the attached stream seems to be a terminal. If it's false, you
+ might refrain from drawing progress bars and other frippery, since you're
+ apparently headed into a pipe::
+
+ from blessings import Terminal
+
+ term = Terminal()
+ if term.is_a_tty:
+ with term.location(0, term.height - 1):
+ print 'Progress: [=======> ]'
+ print term.bold('Important stuff')
+
+ Shopping List
+ =============
+
+ There are decades of legacy tied up in terminal interaction, so attention to
+ detail and behavior in edge cases make a difference. Here are some ways
+ Blessings has your back:
+
+ * Uses the terminfo database so it works with any terminal type
+ * Provides up-to-the-moment terminal height and width, so you can respond to
+ terminal size changes (SIGWINCH signals). (Most other libraries query the
+ ``COLUMNS`` and ``LINES`` environment variables or the ``cols`` or ``lines``
+ terminal capabilities, which don't update promptly, if at all.)
+ * Avoids making a mess if the output gets piped to a non-terminal
+ * Works great with standard Python string templating
+ * Provides convenient access to all terminal capabilities, not just a sugared
+ few
+ * Outputs to any file-like object, not just stdout
+ * Keeps a minimum of internal state, so you can feel free to mix and match with
+ calls to curses or whatever other terminal libraries you like
+
+ Blessings does not provide...
+
+ * Native color support on the Windows command prompt. However, it should work
+ when used in concert with colorama_.
+
+ .. _colorama: http://pypi.python.org/pypi/colorama/0.2.4
+
+ Bugs
+ ====
+
+ Bugs or suggestions? Visit the `issue tracker`_.
+
+ .. _`issue tracker`: https://github.com/erikrose/blessings/issues/new
+
+ License
+ =======
+
+ Blessings is under the MIT License. See the LICENSE file.
+
+ Version History
+ ===============
+
+ 1.3
+ * Add ``number_of_colors``, which tells you how many colors the terminal
+ supports.
+ * Made ``color(n)`` and ``on_color(n)`` callable to wrap a string, like the
+ named colors can. Also, make them both fall back to the ``setf`` and
+ ``setb`` capabilities (like the named colors do) if the ANSI ``setaf`` and
+ ``setab`` aren't available.
+ * Allow ``color`` attr to act as an unparametrized string, not just a
+ callable.
+ * Make ``height`` and ``width`` examine any passed-in stream before falling
+ back to stdout. (This rarely if ever affects actual behavior; it's mostly
+ philosophical.)
+ * Make caching simpler and slightly more efficient.
+ * Get rid of a reference cycle between Terminals and FormattingStrings.
+ * Update docs to reflect that terminal addressing (as in ``location()``) is
+ 0-based.
+
+ 1.2
+ * Added support for Python 3! We need 3.2.3 or greater, because the curses
+ library couldn't decide whether to accept strs or bytes before that
+ (http://bugs.python.org/issue10570).
+ * Everything that comes out of the library is now unicode. This lets us
+ support Python 3 without making a mess of the code, and Python 2 should
+ continue to work unless you were testing types (and badly). Please file a
+ bug if this causes trouble for you.
+ * Changed to the MIT License for better world domination.
+ * Added Sphinx docs.
+
+ 1.1
+ * Added nicely named attributes for colors.
+ * Introduced compound formatting.
+ * Added wrapper behavior for styling and colors.
+ * Let you force capabilities to be non-empty, even if the output stream is
+ not a terminal.
+ * Added the ``is_a_tty`` attribute for telling whether the output stream is a
+ terminal.
+ * Sugared the remaining interesting string capabilities.
+ * Let ``location()`` operate on just an x *or* y coordinate.
+
+ 1.0
+ * Extracted Blessings from nose-progressive, my `progress-bar-having,
+ traceback-shortcutting, rootin', tootin' testrunner`_. It provided the
+ tootin' functionality.
+
+ .. _`progress-bar-having, traceback-shortcutting, rootin', tootin' testrunner`: http://pypi.python.org/pypi/nose-progressive/
+
+Keywords: terminal,tty,curses,ncurses,formatting,style,color,console
+Platform: UNKNOWN
+Classifier: Intended Audience :: Developers
+Classifier: Natural Language :: English
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Environment :: Console
+Classifier: Environment :: Console :: Curses
+Classifier: License :: OSI Approved :: MIT License
+Classifier: Operating System :: POSIX
+Classifier: Programming Language :: Python :: 2
+Classifier: Programming Language :: Python :: 2.5
+Classifier: Programming Language :: Python :: 2.6
+Classifier: Programming Language :: Python :: 2.7
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.2
+Classifier: Topic :: Software Development :: Libraries
+Classifier: Topic :: Software Development :: User Interfaces
+Classifier: Topic :: Terminals