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
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
/*
* pcre.c - interface to the PCRE library
*
* This file is part of zsh, the Z shell.
*
* Copyright (c) 2001, 2002, 2003, 2004 Clint Adams
* All rights reserved.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and to distribute modified versions of this software for any
* purpose, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* In no event shall Clint Adams or the Zsh Development Group be liable
* to any party for direct, indirect, special, incidental, or consequential
* damages arising out of the use of this software and its documentation,
* even if Andrew Main and the Zsh Development Group have been advised of
* the possibility of such damage.
*
* Clint Adams and the Zsh Development Group specifically disclaim any
* warranties, including, but not limited to, the implied warranties of
* merchantability and fitness for a particular purpose. The software
* provided hereunder is on an "as is" basis, and Andrew Main and the
* Zsh Development Group have no obligation to provide maintenance,
* support, updates, enhancements, or modifications.
*
*/
#include "pcre.mdh"
#include "pcre.pro"
#define CPCRE_PLAIN 0
/**/
#if defined(HAVE_PCRE_COMPILE) && defined(HAVE_PCRE_EXEC)
#include <pcre.h>
static pcre *pcre_pattern;
static pcre_extra *pcre_hints;
/**/
static int
bin_pcre_compile(char *nam, char **args, Options ops, UNUSED(int func))
{
int pcre_opts = 0, pcre_errptr;
const char *pcre_error;
if(OPT_ISSET(ops,'a')) pcre_opts |= PCRE_ANCHORED;
if(OPT_ISSET(ops,'i')) pcre_opts |= PCRE_CASELESS;
if(OPT_ISSET(ops,'m')) pcre_opts |= PCRE_MULTILINE;
if(OPT_ISSET(ops,'x')) pcre_opts |= PCRE_EXTENDED;
pcre_hints = NULL; /* Is this necessary? */
pcre_pattern = pcre_compile(*args, pcre_opts, &pcre_error, &pcre_errptr, NULL);
if (pcre_pattern == NULL)
{
zwarnnam(nam, "error in regex: %s", pcre_error, 0);
return 1;
}
return 0;
}
/**/
#ifdef HAVE_PCRE_STUDY
/**/
static int
bin_pcre_study(char *nam, UNUSED(char **args), UNUSED(Options ops), UNUSED(int func))
{
const char *pcre_error;
if (pcre_pattern == NULL)
{
zwarnnam(nam, "no pattern has been compiled for study",
NULL, 0);
return 1;
}
pcre_hints = pcre_study(pcre_pattern, 0, &pcre_error);
if (pcre_error != NULL)
{
zwarnnam(nam, "error while studying regex: %s", pcre_error, 0);
return 1;
}
return 0;
}
/**/
#else /* !HAVE_PCRE_STUDY */
# define bin_pcre_study bin_notavail
/**/
#endif /* !HAVE_PCRE_STUDY */
/**/
static int
zpcre_get_substrings(char *arg, int *ovec, int ret, char *receptacle)
{
char **captures, **matches;
if(!pcre_get_substring_list(arg, ovec, ret, (const char ***)&captures)) {
matches = zarrdup(&captures[1]); /* first one would be entire string */
if (receptacle == NULL)
setaparam("match", matches);
else
setaparam(receptacle, matches);
pcre_free_substring_list((const char **)captures);
}
return 0;
}
/**/
static int
bin_pcre_match(char *nam, char **args, Options ops, UNUSED(int func))
{
int ret, capcount, *ovec, ovecsize;
char *receptacle = NULL;
if(OPT_ISSET(ops,'a')) {
receptacle = *args++;
if(!*args) {
zwarnnam(nam, "not enough arguments", NULL, 0);
return 1;
}
}
if ((ret = pcre_fullinfo(pcre_pattern, pcre_hints, PCRE_INFO_CAPTURECOUNT, &capcount)))
{
zwarnnam(nam, "error %d in fullinfo", NULL, ret);
return 1;
}
ovecsize = (capcount+1)*3;
ovec = zalloc(ovecsize*sizeof(int));
ret = pcre_exec(pcre_pattern, pcre_hints, *args, strlen(*args), 0, 0, ovec, ovecsize);
if (ret==0) return 0;
else if (ret==PCRE_ERROR_NOMATCH) return 1; /* no match */
else if (ret>0) {
zpcre_get_substrings(*args, ovec, ret, receptacle);
return 0;
}
else {
zwarnnam(nam, "error in pcre_exec", NULL, 0);
return 1;
}
return 1;
}
/**/
static int
cond_pcre_match(char **a, int id)
{
pcre *pcre_pat;
const char *pcre_err;
char *lhstr, *rhre;
int r = 0, pcre_opts = 0, pcre_errptr, capcnt, *ov, ovsize;
lhstr = cond_str(a,0,0);
rhre = cond_str(a,1,0);
switch(id) {
case CPCRE_PLAIN:
pcre_pat = pcre_compile(rhre, pcre_opts, &pcre_err, &pcre_errptr, NULL);
pcre_fullinfo(pcre_pat, NULL, PCRE_INFO_CAPTURECOUNT, &capcnt);
ovsize = (capcnt+1)*3;
ov = zalloc(ovsize*sizeof(int));
r = pcre_exec(pcre_pat, NULL, lhstr, strlen(lhstr), 0, 0, ov, ovsize);
if (r==0) return 1;
else if (r==PCRE_ERROR_NOMATCH) return 0; /* no match */
else if (r>0) {
zpcre_get_substrings(lhstr, ov, r, NULL);
return 1;
}
break;
}
return 0;
}
static struct conddef cotab[] = {
CONDDEF("pcre-match", CONDF_INFIX, cond_pcre_match, 0, 0, CPCRE_PLAIN)
};
/**/
#else /* !(HAVE_PCRE_COMPILE && HAVE_PCRE_EXEC) */
# define bin_pcre_compile bin_notavail
# define bin_pcre_study bin_notavail
# define bin_pcre_match bin_notavail
/**/
#endif /* !(HAVE_PCRE_COMPILE && HAVE_PCRE_EXEC) */
static struct builtin bintab[] = {
BUILTIN("pcre_compile", 0, bin_pcre_compile, 1, 1, 0, "aimx", NULL),
BUILTIN("pcre_study", 0, bin_pcre_study, 0, 0, 0, NULL, NULL),
BUILTIN("pcre_match", 0, bin_pcre_match, 1, 2, 0, "a", NULL)
};
/**/
int
setup_(UNUSED(Module m))
{
return 0;
}
/**/
int
boot_(Module m)
{
#if defined(HAVE_PCRE_COMPILE) && defined(HAVE_PCRE_EXEC)
return !addbuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab)) ||
!addconddefs(m->nam, cotab, sizeof(cotab)/sizeof(*cotab));
#else /* !(HAVE_PCRE_COMPILE && HAVE_PCRE_EXEC) */
return !addbuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
#endif /* !(HAVE_PCRE_COMPILE && HAVE_PCRE_EXEC) */
}
/**/
int
cleanup_(Module m)
{
deletebuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
#if defined(HAVE_PCRE_COMPILE) && defined(HAVE_PCRE_EXEC)
deleteconddefs(m->nam, cotab, sizeof(cotab)/sizeof(*cotab));
#endif /* !(HAVE_PCRE_COMPILE && HAVE_PCRE_EXEC) */
return 0;
}
/**/
int
finish_(UNUSED(Module m))
{
return 0;
}
|
