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#
# Copyright (C) 2005 Stefan Seefeld
# All rights reserved.
# Licensed to the public under the terms of the GNU LGPL (>= 2),
# see the file COPYING for details.
#
from Synopsis import AST
from Filter import Filter
import re
class CFilter(Filter):
"""A class that formats C /* */ style comments"""
__re_c = r"/[\*]+[ \t]*(?P<text>.*)(?P<lines>(\n[ \t]*.*)*?)(\n[ \t]*)?[\*]+/"
# match lines with and without asterisk.
# preserve space after asterisk so empty lines are formatted correctly.
__re_line = r"\n[ \t]*([ \t]*[\*]+(?=[ \t\n]))*(?P<text>.*)"
def __init__(self):
"""Compiles the regular expressions"""
if self.debug:
print 'CComment Processor requested.\n'
self.re_c = re.compile(CFilter.__re_c)
self.re_line = re.compile(CFilter.__re_line)
def filter_comment(self, comment):
"""Finds comments in the C format. The format is /* ... */.
It has to cater for all five line forms: "/* ...", " * ...", " ...",
" */" and the one-line "/* ... */".
"""
text = comment.text()
text_list = []
mo = self.re_c.search(text)
while mo:
text_list.append(mo.group('text'))
lines = mo.group('lines')
if lines:
mol = self.re_line.search(lines)
while mol:
text_list.append(mol.group('text'))
mol = self.re_line.search(lines, mol.end())
mo = self.re_c.search(text, mo.end())
text = string.join(text_list,'\n')
comment.set_text(text)
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