1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
/* libguestfs
* Copyright (C) 2010-2020 Red Hat Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define PCRE2_CODE_UNIT_WIDTH 8
#include <pcre2.h>
#include "cleanups.h"
#include "guestfs.h"
#include "guestfs-internal.h"
/* Match a regular expression which contains no captures. Returns
* true if it matches or false if it doesn't.
*/
int
guestfs_int_match (guestfs_h *g, const char *str, const pcre2_code *re)
{
CLEANUP_PCRE2_MATCH_DATA_FREE pcre2_match_data *match_data =
pcre2_match_data_create_from_pattern (re, NULL);
int r;
r = pcre2_match (re, (PCRE2_SPTR)str, PCRE2_ZERO_TERMINATED,
0, 0, match_data, NULL);
if (r == PCRE2_ERROR_NOMATCH)
return 0;
return 1;
}
/* Match a regular expression which contains exactly one capture. If
* the string matches, return the capture, otherwise return NULL. The
* caller must free the result.
*/
char *
guestfs_int_match1 (guestfs_h *g, const char *str, const pcre2_code *re)
{
CLEANUP_PCRE2_MATCH_DATA_FREE pcre2_match_data *match_data =
pcre2_match_data_create_from_pattern (re, NULL);
PCRE2_SIZE *vec;
int r;
r = pcre2_match (re, (PCRE2_SPTR)str, PCRE2_ZERO_TERMINATED,
0, 0, match_data, NULL);
if (r == PCRE2_ERROR_NOMATCH)
return NULL;
vec = pcre2_get_ovector_pointer (match_data);
return r == 2 ? safe_strndup (g, &str[vec[2]], vec[3]-vec[2]) : NULL;
}
/* Match a regular expression which contains exactly two captures. */
int
guestfs_int_match2 (guestfs_h *g, const char *str, const pcre2_code *re,
char **ret1, char **ret2)
{
CLEANUP_PCRE2_MATCH_DATA_FREE pcre2_match_data *match_data =
pcre2_match_data_create_from_pattern (re, NULL);
PCRE2_SIZE *vec;
int r;
r = pcre2_match (re, (PCRE2_SPTR)str, PCRE2_ZERO_TERMINATED,
0, 0, match_data, NULL);
if (r == PCRE2_ERROR_NOMATCH)
return 0;
vec = pcre2_get_ovector_pointer (match_data);
*ret1 = NULL;
*ret2 = NULL;
if (r > 1) *ret1 = safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
if (r > 2) *ret2 = safe_strndup (g, &str[vec[4]], vec[5]-vec[4]);
return 1;
}
/* Match a regular expression which contains exactly three captures. */
int
guestfs_int_match3 (guestfs_h *g, const char *str, const pcre2_code *re,
char **ret1, char **ret2, char **ret3)
{
CLEANUP_PCRE2_MATCH_DATA_FREE pcre2_match_data *match_data =
pcre2_match_data_create_from_pattern (re, NULL);
PCRE2_SIZE *vec;
int r;
r = pcre2_match (re, (PCRE2_SPTR)str, PCRE2_ZERO_TERMINATED,
0, 0, match_data, NULL);
if (r == PCRE2_ERROR_NOMATCH)
return 0;
vec = pcre2_get_ovector_pointer (match_data);
*ret1 = NULL;
*ret2 = NULL;
*ret3 = NULL;
if (r > 1) *ret1 = safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
if (r > 2) *ret2 = safe_strndup (g, &str[vec[4]], vec[5]-vec[4]);
if (r > 3) *ret3 = safe_strndup (g, &str[vec[6]], vec[7]-vec[6]);
return 1;
}
/* Match a regular expression which contains exactly four captures. */
int
guestfs_int_match4 (guestfs_h *g, const char *str, const pcre2_code *re,
char **ret1, char **ret2, char **ret3, char **ret4)
{
CLEANUP_PCRE2_MATCH_DATA_FREE pcre2_match_data *match_data =
pcre2_match_data_create_from_pattern (re, NULL);
PCRE2_SIZE *vec;
int r;
r = pcre2_match (re, (PCRE2_SPTR)str, PCRE2_ZERO_TERMINATED,
0, 0, match_data, NULL);
if (r == PCRE2_ERROR_NOMATCH)
return 0;
vec = pcre2_get_ovector_pointer (match_data);
*ret1 = NULL;
*ret2 = NULL;
*ret3 = NULL;
*ret4 = NULL;
if (r > 1) *ret1 = safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
if (r > 2) *ret2 = safe_strndup (g, &str[vec[4]], vec[5]-vec[4]);
if (r > 3) *ret3 = safe_strndup (g, &str[vec[6]], vec[7]-vec[6]);
if (r > 4) *ret4 = safe_strndup (g, &str[vec[8]], vec[9]-vec[8]);
return 1;
}
/* Match a regular expression which contains exactly six captures. */
int
guestfs_int_match6 (guestfs_h *g, const char *str, const pcre2_code *re,
char **ret1, char **ret2, char **ret3, char **ret4,
char **ret5, char **ret6)
{
CLEANUP_PCRE2_MATCH_DATA_FREE pcre2_match_data *match_data =
pcre2_match_data_create_from_pattern (re, NULL);
PCRE2_SIZE *vec;
int r;
r = pcre2_match (re, (PCRE2_SPTR)str, PCRE2_ZERO_TERMINATED,
0, 0, match_data, NULL);
if (r == PCRE2_ERROR_NOMATCH)
return 0;
vec = pcre2_get_ovector_pointer (match_data);
*ret1 = NULL;
*ret2 = NULL;
*ret3 = NULL;
*ret4 = NULL;
*ret5 = NULL;
*ret6 = NULL;
if (r > 1) *ret1 = safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
if (r > 2) *ret2 = safe_strndup (g, &str[vec[4]], vec[5]-vec[4]);
if (r > 3) *ret3 = safe_strndup (g, &str[vec[6]], vec[7]-vec[6]);
if (r > 4) *ret4 = safe_strndup (g, &str[vec[8]], vec[9]-vec[8]);
if (r > 5) *ret5 = safe_strndup (g, &str[vec[10]], vec[11]-vec[10]);
if (r > 6) *ret6 = safe_strndup (g, &str[vec[12]], vec[13]-vec[12]);
return 1;
}
|
