1 /*
2 * Copyright (c) 2015-2018, Intel Corporation
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * * Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of Intel Corporation nor the names of its contributors
13 * may be used to endorse or promote products derived from this software
14 * without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "pcre_util.h"
30
31 #include "hs.h"
32
33 #include <assert.h>
34 #include <pcre.h> /* for pcre flags */
35
getPcreFlags(unsigned int hs_flags,unsigned int * flags,bool * highlander,bool * prefilter,bool * som,bool * combination,bool * quiet)36 bool getPcreFlags(unsigned int hs_flags, unsigned int *flags,
37 bool *highlander, bool *prefilter, bool *som,
38 bool *combination, bool *quiet) {
39 assert(flags);
40 assert(highlander);
41 assert(prefilter);
42 assert(som);
43 *flags = 0;
44 *highlander = false;
45 *prefilter = false;
46 *som = false;
47
48 if (hs_flags & HS_FLAG_CASELESS) {
49 *flags |= PCRE_CASELESS;
50 hs_flags &= ~HS_FLAG_CASELESS;
51 }
52 if (hs_flags & HS_FLAG_DOTALL) {
53 *flags |= PCRE_DOTALL;
54 hs_flags &= ~HS_FLAG_DOTALL;
55 }
56 if (hs_flags & HS_FLAG_MULTILINE) {
57 *flags |= PCRE_MULTILINE;
58 hs_flags &= ~HS_FLAG_MULTILINE;
59 }
60 if (hs_flags & HS_FLAG_UCP) {
61 *flags |= PCRE_UCP;
62 hs_flags &= ~HS_FLAG_UCP;
63 }
64 if (hs_flags & HS_FLAG_UTF8) {
65 *flags |= PCRE_UTF8;
66 hs_flags &= ~HS_FLAG_UTF8;
67 }
68 if (hs_flags & HS_FLAG_SINGLEMATCH) {
69 *highlander = true;
70 hs_flags &= ~HS_FLAG_SINGLEMATCH;
71 }
72 if (hs_flags & HS_FLAG_PREFILTER) {
73 *prefilter = true;
74 hs_flags &= ~HS_FLAG_PREFILTER;
75 }
76 if (hs_flags & HS_FLAG_SOM_LEFTMOST) {
77 *som = true;
78 hs_flags &= ~HS_FLAG_SOM_LEFTMOST;
79 }
80 if (hs_flags & HS_FLAG_COMBINATION) {
81 *combination = true;
82 hs_flags &= ~HS_FLAG_COMBINATION;
83 }
84 if (hs_flags & HS_FLAG_QUIET) {
85 *quiet = true;
86 hs_flags &= ~HS_FLAG_QUIET;
87 }
88
89 // Flags that are irrelevant to PCRE.
90 hs_flags &= ~HS_FLAG_ALLOWEMPTY;
91
92 if (hs_flags) {
93 // You've added new flags, haven't you?
94 assert(0);
95 return false;
96 }
97
98 return true;
99 }
100