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textutils.py
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Wed, Sep 25, 16:42

textutils.py
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# -*- coding: utf-8 -*-
## $Id$
## This file is part of CDS Invenio.
## Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 CERN.
##
## CDS Invenio is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License as
## published by the Free Software Foundation; either version 2 of the
## License, or (at your option) any later version.
##
## CDS Invenio 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 CDS Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""
Functions useful for text handling.
"""
__revision__ = "$Id$"
import sys
from formatter import AbstractFormatter, DumbWriter
from cStringIO import StringIO
def indent_text(text,
nb_tabs=0,
tab_str=" ",
linebreak_input="\n",
linebreak_output="\n"):
"""
add tabs to each line of text
@param text: the text to indent
@param nb_tabs: number of tabs to add
@param tab_str: type of tab (could be, for example "\t", default: 2 spaces
@param linebreak_input: linebreak on input
@param linebreak_output: linebreak on output
@return indented text as string
"""
lines = text.split(linebreak_input)
tabs = nb_tabs*tab_str
output = ""
for line in lines:
output += tabs + line + linebreak_output
return output
def wrap_text_in_a_box(title='', body='', char_sep=' ', max_col=72):
"""Return a nicely formatted text box:
******************
** title **
**--------------**
** body **
******************
"""
ret = ''
out = StringIO()
tool = AbstractFormatter(DumbWriter(out, maxcol=max_col))
for row in body.split('\n'):
tool.add_flowing_data(row)
tool.end_paragraph(1)
body_rows = out.getvalue().split('\n')[:-2]
out = StringIO()
tool = AbstractFormatter(DumbWriter(out, maxcol=max_col))
tool.add_flowing_data(title)
title_rows = out.getvalue().split('\n')
max_len = max([len(row) for row in title_rows + body_rows]) + 6
ret += '*' * max_len + '\n'
if title:
for row in title_rows:
ret += '** %s%s **\n' % (row, ' ' * (max_len - len(row) - 6))
ret += '**' + char_sep * (max_len - 4) + '**\n'
for row in body_rows:
ret += '** %s%s **\n' % (row, ' ' * (max_len - len(row) - 6))
ret += '*' * max_len + '\n'
return ret
def make_conclusion(text):
"""Return:
--------------
text text text
"""
out = StringIO()
tool = AbstractFormatter(DumbWriter(out, maxcol=78))
tool.add_flowing_data(text)
text = out.getvalue().split('\n')
max_len = max([len(row) for row in text])
return '%s\n%s\n' % ('-' * max_len, '\n'.join(text))
def wait_for_user(msg):
"""Print MSG and prompt user for confirmation."""
try:
raw_input(msg)
except KeyboardInterrupt:
print "\n\nInstallation aborted."
sys.exit(1)
except EOFError:
print " (continuing in batch mode)"
return

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