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53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
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/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
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*
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* This file is part of the device-mapper userspace tools.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License v.2.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _DM_PARSE_REGEX_H
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#define _DM_PARSE_REGEX_H
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enum {
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CAT,
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STAR,
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PLUS,
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OR,
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QUEST,
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CHARSET
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};
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/*
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* We're never going to be running the regex on non-printable
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* chars, so we can use a couple of these chars to represent the
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* start and end of a string.
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*/
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#define HAT_CHAR 0x2
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#define DOLLAR_CHAR 0x3
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struct rx_node {
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int type;
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dm_bitset_t charset;
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struct rx_node *left, *right;
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/* used to build the dfa for the toker */
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int nullable, final;
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dm_bitset_t firstpos;
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dm_bitset_t lastpos;
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dm_bitset_t followpos;
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};
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struct rx_node *rx_parse_str(struct dm_pool *mem, const char *str);
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struct rx_node *rx_parse_tok(struct dm_pool *mem,
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const char *begin, const char *end);
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#endif
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