# Sketch - A Python-based interactive drawing program
# Copyright (C) 1998, 1999 by Bernhard Herzog
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Miscellaneous functions for PostScript creation
#
from string import join
import operator
def make_ps_quote_table():
table = [''] * 256
quote = (ord('('), ord(')'), ord('\\'))
for i in range(128):
if i in quote:
table[i] = '\\' + chr(i)
else:
table[i] = chr(i)
for i in range(128, 256):
table[i] = '\\' + oct(i)[1:]
return table
quote_table = make_ps_quote_table()
def quote_ps_string(text):
return join(map(operator.getitem, [quote_table]*len(text), map(ord, text)),
'')
def make_textline(text):
# return text unchanged if no character needs to be quoted, as a
# PS-string (with enclosing parens) otherwise.
quoted = quote_ps_string(text)
if quoted == text:
return text
return "(%s)" % quoted
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