def make_ctx(self, w_string, pos=0, endpos=sys.maxint):
"""Make a StrMatchContext, BufMatchContext or a Utf8MatchContext for
searching in the given w_string object."""
space = self.space
if pos < 0:
pos = 0
if endpos < pos:
endpos = pos
if space.isinstance_w(w_string, space.w_unicode):
if self.is_known_bytes():
raise oefmt(
space.w_TypeError,
"can't use a bytes pattern on a string-like "
"object")
w_unicode_obj = space.convert_arg_to_w_unicode(w_string)
utf8str = w_unicode_obj._utf8
length = w_unicode_obj._len()
if pos <= 0:
bytepos = 0
elif pos >= length:
bytepos = len(utf8str)
else:
bytepos = w_unicode_obj._index_to_byte(pos)
if endpos >= length:
endbytepos = len(utf8str)
else:
endbytepos = w_unicode_obj._index_to_byte(endpos)
if w_unicode_obj.is_ascii():
ctx = UnicodeAsciiMatchContext(utf8str, bytepos, endbytepos)
else:
ctx = rsre_utf8.Utf8MatchContext(utf8str, bytepos, endbytepos)
# we store the w_string on the ctx too, for
# W_SRE_Match.bytepos_to_charindex()
ctx.w_unicode_obj = w_unicode_obj
return ctx
elif self.is_known_unicode():
raise oefmt(space.w_TypeError,
"can't use a string pattern on a bytes-like "
"object")
elif space.isinstance_w(w_string, space.w_bytes):
string = space.bytes_w(w_string)
length = len(string)
if pos > length:
pos = length
if endpos > length:
endpos = length
return rsre_core.StrMatchContext(string, pos, endpos)
else:
buf = space.readbuf_w(w_string)
size = buf.getlength()
assert size >= 0
if pos > size:
pos = size
if endpos > size:
endpos = size
return rsre_core.BufMatchContext(buf, pos, endpos)
def fresh_copy(self, ctx):
if isinstance(ctx, rsre_utf8.Utf8MatchContext):
result = rsre_utf8.Utf8MatchContext(ctx._utf8, ctx.match_start,
ctx.end, ctx.flags)
result.w_unicode_obj = ctx.w_unicode_obj
elif isinstance(ctx, rsre_core.StrMatchContext):
result = self._make_str_match_context(ctx._string, ctx.match_start,
ctx.end)
elif isinstance(ctx, rsre_core.BufMatchContext):
result = rsre_core.BufMatchContext(ctx._buffer, ctx.match_start,
ctx.end, ctx.flags)
else:
raise AssertionError("bad ctx type")
result.match_end = ctx.match_end
return result
def make_ctx(self, w_string, pos=0, endpos=sys.maxint):
"""Make a StrMatchContext, BufMatchContext or a Utf8MatchContext for
searching in the given w_string object."""
space = self.space
if pos < 0:
pos = 0
if endpos < pos:
endpos = pos
if space.isinstance_w(w_string, space.w_unicode):
w_unicode_obj = space.convert_arg_to_w_unicode(w_string)
utf8str = w_unicode_obj._utf8
length = w_unicode_obj._len()
if pos <= 0:
bytepos = 0
elif pos >= length:
bytepos = len(utf8str)
else:
index_storage = w_unicode_obj._get_index_storage()
bytepos = rutf8.codepoint_position_at_index(
utf8str, index_storage, pos)
if endpos >= length:
endbytepos = len(utf8str)
else:
index_storage = w_unicode_obj._get_index_storage()
endbytepos = rutf8.codepoint_position_at_index(
utf8str, index_storage, endpos)
ctx = rsre_utf8.Utf8MatchContext(utf8str, bytepos, endbytepos,
self.flags)
# xxx we store the w_string on the ctx too, for
# W_SRE_Match.bytepos_to_charindex()
ctx.w_unicode_obj = w_unicode_obj
return ctx
elif space.isinstance_w(w_string, space.w_bytes):
str = space.bytes_w(w_string)
if pos > len(str):
pos = len(str)
if endpos > len(str):
endpos = len(str)
return self._make_str_match_context(str, pos, endpos)
else:
buf = space.readbuf_w(w_string)
size = buf.getlength()
assert size >= 0
if pos > size:
pos = size
if endpos > size:
endpos = size
return rsre_core.BufMatchContext(buf, pos, endpos, self.flags)
