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
|
/**
* qsre.c: pcre expression match test tool
*
* See http://mod-qos.sourceforge.net/ for further
* details.
*
* Copyright (C) 2023 Pascal Buchbinder
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
static const char revision[] = "$Id: qsre.c 2654 2022-05-13 09:12:42Z pbuchbinder $";
/* system */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
/* apr */
#include <apr.h>
#include <apr_strings.h>
#include <apr_time.h>
#include <apr_general.h>
#include <apr_lib.h>
#include <apr_portable.h>
#include <apr_support.h>
#define PCRE2_CODE_UNIT_WIDTH 8
#include <pcre2.h>
#include "qs_util.h"
#define QS_OVECCOUNT 100
static void usage(const char *cmd, int man) {
if(man) {
//.TH [name of program] [section number] [center footer] [left footer] [center header]
printf(".TH %s 1 \"%s\" \"mod_qos utilities %s\" \"%s man page\"\n", qs_CMD(cmd), man_date,
man_version, cmd);
}
printf("\n");
if(man) {
printf(".SH NAME\n");
}
qs_man_print(man, "%s matches a regular expression against test strings.\n", cmd);
printf("\n");
if(man) {
printf(".SH SYNOPSIS\n");
}
qs_man_print(man, "%s%s <string>|<path> <pcre>|<path>\n", man ? "" : "Usage: ", cmd);
printf("\n");
if(man) {
printf(".SH DESCRIPTION\n");
} else {
printf("Summary\n");
}
qs_man_print(man, "Regular expression test tool.\n");
qs_man_print(man, "The provided regular expression (pcre, caseless matching, \".\" matches anything\n");
qs_man_print(man, "incl. newline) is appplied against the provided test strings to verify if the\n");
qs_man_print(man, "pattern matches.\n");
printf("\n");
if(man) {
printf(".SH OPTIONS\n");
} else {
printf("Options\n");
}
if(man) printf(".TP\n");
qs_man_print(man, " <string>|<path>\n");
if(man) printf("\n");
qs_man_print(man, " The first argument either defines a single test string of a path to\n");
qs_man_print(man, " a file containing either multiple test strings or a test pattern with\n");
qs_man_print(man, " newline characters (text).\n");
if(man) printf("\n.TP\n");
qs_man_print(man, " <pcre>|<path>\n");
if(man) printf("\n");
qs_man_print(man, " The second argument either defines a regular expression or a path to\n");
qs_man_print(man, " a file containing the expression.\n");
printf("\n");
if(man) {
printf(".SH SEE ALSO\n");
printf("qsdt(1), qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrespeed(1), qsrotate(1), qssign(1), qstail(1)\n");
printf(".SH AUTHOR\n");
printf("Pascal Buchbinder, http://mod-qos.sourceforge.net/\n");
} else {
printf("See http://mod-qos.sourceforge.net/ for further details.\n");
}
if(man) {
exit(0);
} else {
exit(1);
}
}
static int rmatch(const char *line, qs_regex_t *preg) {
qs_regmatch_t regm[QS_MAX_REG_MATCH];
int rc_c = -1;
do {
int rc = qs_regexec_len(preg, line, strlen(line), QS_MAX_REG_MATCH, regm, 0);
if(rc >= 0) {
int ix;
rc_c = 0;
printf("[%.*s]", regm[0].rm_eo - regm[0].rm_so, &line[regm[0].rm_so]);
for(ix = 1; ix < rc; ix++) {
printf(" $%d=%.*s", ix, regm[ix].rm_eo - regm[ix].rm_so, &line[regm[ix].rm_so]);
}
line = &line[regm[0].rm_eo];
} else {
line = NULL;
}
} while(line && line[0]);
return rc_c;
}
int main(int argc, const char *const argv[]) {
const char *errptr = NULL;
int erroffset;
qs_regex_t *preg;
int rc_c = -1;
const char *line;
const char *in;
const char *pattern;
FILE *file;
apr_pool_t *pool;
char *raw = "";
int linenr = 0;
const char *cmd = strrchr(argv[0], '/');
apr_app_initialize(&argc, &argv, NULL);
apr_pool_create(&pool, NULL);
if(cmd == NULL) {
cmd = (char *)argv[0];
} else {
cmd++;
}
argc--;
argv++;
if(argc != 2) {
if(argc == 1 && strcmp(argv[0], "--man") == 0) {
usage(cmd, 1);
} else {
usage(cmd, 0);
}
}
in = argv[0];
pattern = argv[1];
file = fopen(pattern, "r");
if(file) {
char readline[MAX_LINE];
if(fgets(readline, MAX_LINE-1, file) != NULL) {
int len = strlen(readline);
while(len > 0 && readline[len] < 32) {
readline[len] = '\0';
len--;
}
pattern = apr_pstrdup(pool, readline);
}
fclose(file);
}
printf("expression: %s\n", pattern);
preg = apr_palloc(pool, sizeof(qs_regex_t));
if(qs_regcomp(preg, pattern, PCRE2_DOTALL|PCRE2_CASELESS) != 0) {
fprintf(stderr, "ERROR, rule <%s> could not compile regular expression\n", pattern);
exit(1);
}
apr_pool_pre_cleanup_register(pool, preg, qs_pregfree);
file = fopen(in, "r");
if(file) {
char readline[MAX_LINE];
while(fgets(readline, MAX_LINE-1, file) != NULL) {
int len = strlen(readline);
linenr++;
printf("line %.3d: ", linenr);
raw = apr_pstrcat(pool, raw, readline, NULL);
while(len > 0 && readline[len] < 32) {
readline[len] = '\0';
len--;
}
if(readline[0] >= 32 && strlen(readline) > 0) {
line = readline;
rc_c = rmatch(line, preg);
}
printf("\n");
}
fclose(file);
printf("entire content match:\n");
rc_c = rmatch(raw, preg);
printf("\n");
} else {
line = in;
rc_c = rmatch(line, preg);
printf("\n");
}
if(rc_c < 0) {
printf("no match\n");
return 2;
}
return 0;
}
|
