Escape sequences (colour) and padding with "%8s"%

[Anton81]

Hi all!

I used escape sequences to produce colour output, but a construct like

print "%8s" % str_with_escape

doesn't do the right thing. I suppose the padding counts the escape
characters, too.

What could be a solution?

Anton

[Tim Chase]

I used escape sequences to produce colour output, but a construct like

>
print "%8s" % str_with_escape

doesn't do the right thing. I suppose the padding counts the escape
characters, too.

What could be a solution?

You omit half of the equation: the contents of str_with_escape.

>>print "hello %c[1mworld%c[0m" % (27, 27)

works just fine for me in Linux (it chokes a bit on Win32 under
cmd.exe, printing the actual escape character, rather than
interpreting it as an ANSI control sequence).

One can even do fancy stuff like:

>>mapping = {'bold': '\x1b[1m', 'normal':'\x1b[0m',

'blue':'\x1b[34m'}

>>print "this has some %(bold)sbold%(normal)s text and some

%(blue)sblue%(normal)s text and some %(bold)s%(blue)stext that is
bold and blue%(normal)s in it" % mapping

and it works with %8s as well.

You might prefer to use the standard curses library rather than
try and roll your own...

-tkc

[Anton81]

For example:

print '%8s' % '\x1b[34mTEST\x1b[0m'

doesn't not indent 'TEST' whereas

print '%8s' % TEST'

works.

[Gabriel Genellina]

At Thursday 10/8/2006 07:04, Anton81 wrote:

>For example:

print '%8s' % '\x1b[34mTEST\x1b[0m'

doesn't not indent 'TEST' whereas

print '%8s' % TEST'

works.

If you insist on building the codes yourself instead of using the
standard curses library...

print '\x1b[34m%8s\x1b[0m' % 'TEST'

Gabriel Genellina
Softlab SRL

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[Anton81]

If you insist on building the codes yourself instead of using the

standard curses library...

print '\x1b[34m%8s\x1b[0m' % 'TEST'

Will the curses library help? The problem is I need the colour coded in my
string and the "print pattern" is static.

What's the quickest way to solve this without having special print routines,
that handle "colour string objects"?

Anton

[Anthra Norell]

Anton,

See if this suits your purpose: http://cheeseshop.python.org/pypi/SE/2.2%20beta
Below the dotted line is how it works.

Frederic
----- Original Message -----
From: "Anton81" <fo***@anton.e4ward.com>
Newsgroups: comp.lang.python
To: <py*********@python.org>
Sent: Wednesday, August 09, 2006 7:48 PM
Subject: Escape sequences (colour) and padding with "%8s"%

Hi all!

I used escape sequences to produce colour output, but a construct like

print "%8s" % str_with_escape

doesn't do the right thing. I suppose the padding counts the escape
characters, too.

What could be a solution?

Anton

----------------------------------------------------------------------------------------------------------

# 1. List your ansi codes and invent concise place holders. Define each one like this 'symbol=ansi_escape'.

>>ansi_escapes = '''

::=(x1b)[0m # Cancel all previous escapes
:B:=(x1b)[1m # bold
:blue:=(x1b)[34m
# etc.
'''

# 2. Mark your text up with your symbols
marked_up_text = "this has some :B:bold:: text and some :blue:blue:: text and some :B::blue:text that is bold and blue::"

# 3 Make an SE Stream Editor.

>>import SE
Ansiizer = SE.SE (ansi_escapes)

# 4. Stream-Edit

>>ansiized_text = Ansiizer (marked_up_text)
ansiized_text

'this has some \x1b[1mbold\x1b[0mtext and some \x1b[34mblue\x1b[0m text and some \x1b[1m\x1b[34mtext that is bold and blue\x1b[0m'

----------------------------------------------------------------------------------------------------------

# Alternatively you may first write your definitions into a file. You then make your ansiizing Stream-Editor simply by naming the
file, say 'your_path/ansi_definitions.se'.

>>Ansiizer = SE.SE ('your_path/ansi_definitions.se')

----------------------------------------------------------------------------------------------------------

# You can do files directly

>>Ansiizer ('some_path/text_file', 'some_path/text_file_ansiized')

----------------------------------------------------------------------------------------------------------