1 | /*
|
---|
2 | * testRegexp.c: simple module for testing regular expressions
|
---|
3 | *
|
---|
4 | * See Copyright for the status of this software.
|
---|
5 | *
|
---|
6 | * Daniel Veillard <[email protected]>
|
---|
7 | */
|
---|
8 |
|
---|
9 | #include "libxml.h"
|
---|
10 | #ifdef LIBXML_AUTOMATA_ENABLED
|
---|
11 | #include <string.h>
|
---|
12 |
|
---|
13 | #include <libxml/tree.h>
|
---|
14 | #include <libxml/xmlautomata.h>
|
---|
15 |
|
---|
16 | static int scanNumber(char **ptr) {
|
---|
17 | int ret = 0;
|
---|
18 | char *cur;
|
---|
19 |
|
---|
20 | cur = *ptr;
|
---|
21 | while ((*cur >= '0') && (*cur <= '9')) {
|
---|
22 | ret = ret * 10 + (*cur - '0');
|
---|
23 | cur++;
|
---|
24 | }
|
---|
25 | *ptr = cur;
|
---|
26 | return(ret);
|
---|
27 | }
|
---|
28 |
|
---|
29 | static void
|
---|
30 | testRegexpFile(const char *filename) {
|
---|
31 | FILE *input;
|
---|
32 | char expr[5000];
|
---|
33 | int len;
|
---|
34 | int ret;
|
---|
35 | int i;
|
---|
36 | xmlAutomataPtr am;
|
---|
37 | xmlAutomataStatePtr states[1000];
|
---|
38 | xmlRegexpPtr regexp = NULL;
|
---|
39 | xmlRegExecCtxtPtr exec = NULL;
|
---|
40 |
|
---|
41 | for (i = 0;i<1000;i++)
|
---|
42 | states[i] = NULL;
|
---|
43 |
|
---|
44 | input = fopen(filename, "r");
|
---|
45 | if (input == NULL) {
|
---|
46 | xmlGenericError(xmlGenericErrorContext,
|
---|
47 | "Cannot open %s for reading\n", filename);
|
---|
48 | return;
|
---|
49 | }
|
---|
50 |
|
---|
51 | am = xmlNewAutomata();
|
---|
52 | if (am == NULL) {
|
---|
53 | xmlGenericError(xmlGenericErrorContext,
|
---|
54 | "Cannot create automata\n");
|
---|
55 | fclose(input);
|
---|
56 | return;
|
---|
57 | }
|
---|
58 | states[0] = xmlAutomataGetInitState(am);
|
---|
59 | if (states[0] == NULL) {
|
---|
60 | xmlGenericError(xmlGenericErrorContext,
|
---|
61 | "Cannot get start state\n");
|
---|
62 | xmlFreeAutomata(am);
|
---|
63 | fclose(input);
|
---|
64 | return;
|
---|
65 | }
|
---|
66 | ret = 0;
|
---|
67 |
|
---|
68 | while (fgets(expr, 4500, input) != NULL) {
|
---|
69 | if (expr[0] == '#')
|
---|
70 | continue;
|
---|
71 | len = strlen(expr);
|
---|
72 | len--;
|
---|
73 | while ((len >= 0) &&
|
---|
74 | ((expr[len] == '\n') || (expr[len] == '\t') ||
|
---|
75 | (expr[len] == '\r') || (expr[len] == ' '))) len--;
|
---|
76 | expr[len + 1] = 0;
|
---|
77 | if (len >= 0) {
|
---|
78 | if ((am != NULL) && (expr[0] == 't') && (expr[1] == ' ')) {
|
---|
79 | char *ptr = &expr[2];
|
---|
80 | int from, to;
|
---|
81 |
|
---|
82 | from = scanNumber(&ptr);
|
---|
83 | if (*ptr != ' ') {
|
---|
84 | xmlGenericError(xmlGenericErrorContext,
|
---|
85 | "Bad line %s\n", expr);
|
---|
86 | break;
|
---|
87 | }
|
---|
88 | if (states[from] == NULL)
|
---|
89 | states[from] = xmlAutomataNewState(am);
|
---|
90 | ptr++;
|
---|
91 | to = scanNumber(&ptr);
|
---|
92 | if (*ptr != ' ') {
|
---|
93 | xmlGenericError(xmlGenericErrorContext,
|
---|
94 | "Bad line %s\n", expr);
|
---|
95 | break;
|
---|
96 | }
|
---|
97 | if (states[to] == NULL)
|
---|
98 | states[to] = xmlAutomataNewState(am);
|
---|
99 | ptr++;
|
---|
100 | xmlAutomataNewTransition(am, states[from], states[to],
|
---|
101 | BAD_CAST ptr, NULL);
|
---|
102 | } else if ((am != NULL) && (expr[0] == 'e') && (expr[1] == ' ')) {
|
---|
103 | char *ptr = &expr[2];
|
---|
104 | int from, to;
|
---|
105 |
|
---|
106 | from = scanNumber(&ptr);
|
---|
107 | if (*ptr != ' ') {
|
---|
108 | xmlGenericError(xmlGenericErrorContext,
|
---|
109 | "Bad line %s\n", expr);
|
---|
110 | break;
|
---|
111 | }
|
---|
112 | if (states[from] == NULL)
|
---|
113 | states[from] = xmlAutomataNewState(am);
|
---|
114 | ptr++;
|
---|
115 | to = scanNumber(&ptr);
|
---|
116 | if (states[to] == NULL)
|
---|
117 | states[to] = xmlAutomataNewState(am);
|
---|
118 | xmlAutomataNewEpsilon(am, states[from], states[to]);
|
---|
119 | } else if ((am != NULL) && (expr[0] == 'f') && (expr[1] == ' ')) {
|
---|
120 | char *ptr = &expr[2];
|
---|
121 | int state;
|
---|
122 |
|
---|
123 | state = scanNumber(&ptr);
|
---|
124 | if (states[state] == NULL) {
|
---|
125 | xmlGenericError(xmlGenericErrorContext,
|
---|
126 | "Bad state %d : %s\n", state, expr);
|
---|
127 | break;
|
---|
128 | }
|
---|
129 | xmlAutomataSetFinalState(am, states[state]);
|
---|
130 | } else if ((am != NULL) && (expr[0] == 'c') && (expr[1] == ' ')) {
|
---|
131 | char *ptr = &expr[2];
|
---|
132 | int from, to;
|
---|
133 | int min, max;
|
---|
134 |
|
---|
135 | from = scanNumber(&ptr);
|
---|
136 | if (*ptr != ' ') {
|
---|
137 | xmlGenericError(xmlGenericErrorContext,
|
---|
138 | "Bad line %s\n", expr);
|
---|
139 | break;
|
---|
140 | }
|
---|
141 | if (states[from] == NULL)
|
---|
142 | states[from] = xmlAutomataNewState(am);
|
---|
143 | ptr++;
|
---|
144 | to = scanNumber(&ptr);
|
---|
145 | if (*ptr != ' ') {
|
---|
146 | xmlGenericError(xmlGenericErrorContext,
|
---|
147 | "Bad line %s\n", expr);
|
---|
148 | break;
|
---|
149 | }
|
---|
150 | if (states[to] == NULL)
|
---|
151 | states[to] = xmlAutomataNewState(am);
|
---|
152 | ptr++;
|
---|
153 | min = scanNumber(&ptr);
|
---|
154 | if (*ptr != ' ') {
|
---|
155 | xmlGenericError(xmlGenericErrorContext,
|
---|
156 | "Bad line %s\n", expr);
|
---|
157 | break;
|
---|
158 | }
|
---|
159 | ptr++;
|
---|
160 | max = scanNumber(&ptr);
|
---|
161 | if (*ptr != ' ') {
|
---|
162 | xmlGenericError(xmlGenericErrorContext,
|
---|
163 | "Bad line %s\n", expr);
|
---|
164 | break;
|
---|
165 | }
|
---|
166 | ptr++;
|
---|
167 | xmlAutomataNewCountTrans(am, states[from], states[to],
|
---|
168 | BAD_CAST ptr, min, max, NULL);
|
---|
169 | } else if ((am != NULL) && (expr[0] == '-') && (expr[1] == '-')) {
|
---|
170 | /* end of the automata */
|
---|
171 | regexp = xmlAutomataCompile(am);
|
---|
172 | xmlFreeAutomata(am);
|
---|
173 | am = NULL;
|
---|
174 | if (regexp == NULL) {
|
---|
175 | xmlGenericError(xmlGenericErrorContext,
|
---|
176 | "Failed to compile the automata");
|
---|
177 | break;
|
---|
178 | }
|
---|
179 | } else if ((expr[0] == '=') && (expr[1] == '>')) {
|
---|
180 | if (regexp == NULL) {
|
---|
181 | printf("=> failed not compiled\n");
|
---|
182 | } else {
|
---|
183 | if (exec == NULL)
|
---|
184 | exec = xmlRegNewExecCtxt(regexp, NULL, NULL);
|
---|
185 | if (ret == 0) {
|
---|
186 | ret = xmlRegExecPushString(exec, NULL, NULL);
|
---|
187 | }
|
---|
188 | if (ret == 1)
|
---|
189 | printf("=> Passed\n");
|
---|
190 | else if ((ret == 0) || (ret == -1))
|
---|
191 | printf("=> Failed\n");
|
---|
192 | else if (ret < 0)
|
---|
193 | printf("=> Error\n");
|
---|
194 | xmlRegFreeExecCtxt(exec);
|
---|
195 | exec = NULL;
|
---|
196 | }
|
---|
197 | ret = 0;
|
---|
198 | } else if (regexp != NULL) {
|
---|
199 | if (exec == NULL)
|
---|
200 | exec = xmlRegNewExecCtxt(regexp, NULL, NULL);
|
---|
201 | ret = xmlRegExecPushString(exec, BAD_CAST expr, NULL);
|
---|
202 | } else {
|
---|
203 | xmlGenericError(xmlGenericErrorContext,
|
---|
204 | "Unexpected line %s\n", expr);
|
---|
205 | }
|
---|
206 | }
|
---|
207 | }
|
---|
208 | fclose(input);
|
---|
209 | if (regexp != NULL)
|
---|
210 | xmlRegFreeRegexp(regexp);
|
---|
211 | if (exec != NULL)
|
---|
212 | xmlRegFreeExecCtxt(exec);
|
---|
213 | if (am != NULL)
|
---|
214 | xmlFreeAutomata(am);
|
---|
215 | }
|
---|
216 |
|
---|
217 | int main(int argc, char **argv) {
|
---|
218 |
|
---|
219 | xmlInitMemory();
|
---|
220 |
|
---|
221 | if (argc == 1) {
|
---|
222 | int ret;
|
---|
223 | xmlAutomataPtr am;
|
---|
224 | xmlAutomataStatePtr start, cur;
|
---|
225 | xmlRegexpPtr regexp;
|
---|
226 | xmlRegExecCtxtPtr exec;
|
---|
227 |
|
---|
228 | am = xmlNewAutomata();
|
---|
229 | start = xmlAutomataGetInitState(am);
|
---|
230 |
|
---|
231 | /* generate a[ba]*a */
|
---|
232 | cur = xmlAutomataNewTransition(am, start, NULL, BAD_CAST"a", NULL);
|
---|
233 | xmlAutomataNewTransition(am, cur, cur, BAD_CAST"b", NULL);
|
---|
234 | xmlAutomataNewTransition(am, cur, cur, BAD_CAST"a", NULL);
|
---|
235 | cur = xmlAutomataNewCountTrans(am, cur, NULL, BAD_CAST"a", 2, 3, NULL);
|
---|
236 | xmlAutomataSetFinalState(am, cur);
|
---|
237 |
|
---|
238 | /* compile it in a regexp and free the automata */
|
---|
239 | regexp = xmlAutomataCompile(am);
|
---|
240 | xmlFreeAutomata(am);
|
---|
241 |
|
---|
242 | /* test the regexp */
|
---|
243 | xmlRegexpPrint(stdout, regexp);
|
---|
244 | exec = xmlRegNewExecCtxt(regexp, NULL, NULL);
|
---|
245 | ret = xmlRegExecPushString(exec, BAD_CAST"a", NULL);
|
---|
246 | if (ret == 1)
|
---|
247 | printf("final\n");
|
---|
248 | else if (ret < 0)
|
---|
249 | printf("error\n");
|
---|
250 | ret =xmlRegExecPushString(exec, BAD_CAST"a", NULL);
|
---|
251 | if (ret == 1)
|
---|
252 | printf("final\n");
|
---|
253 | else if (ret < 0)
|
---|
254 | printf("error\n");
|
---|
255 | ret =xmlRegExecPushString(exec, BAD_CAST"b", NULL);
|
---|
256 | if (ret == 1)
|
---|
257 | printf("final\n");
|
---|
258 | else if (ret < 0)
|
---|
259 | printf("error\n");
|
---|
260 | ret =xmlRegExecPushString(exec, BAD_CAST"a", NULL);
|
---|
261 | if (ret == 1)
|
---|
262 | printf("final\n");
|
---|
263 | else if (ret < 0)
|
---|
264 | printf("error\n");
|
---|
265 | ret =xmlRegExecPushString(exec, BAD_CAST"a", NULL);
|
---|
266 | if (ret == 1)
|
---|
267 | printf("final\n");
|
---|
268 | else if (ret < 0)
|
---|
269 | printf("error\n");
|
---|
270 | ret =xmlRegExecPushString(exec, BAD_CAST"a", NULL);
|
---|
271 | if (ret == 1)
|
---|
272 | printf("final\n");
|
---|
273 | else if (ret < 0)
|
---|
274 | printf("error\n");
|
---|
275 | ret =xmlRegExecPushString(exec, BAD_CAST"a", NULL);
|
---|
276 | if (ret == 1)
|
---|
277 | printf("final\n");
|
---|
278 | else if (ret < 0)
|
---|
279 | printf("error\n");
|
---|
280 | if (ret == 0) {
|
---|
281 | ret = xmlRegExecPushString(exec, NULL, NULL);
|
---|
282 | if (ret == 1)
|
---|
283 | printf("final\n");
|
---|
284 | else if (ret < 0)
|
---|
285 | printf("error\n");
|
---|
286 | }
|
---|
287 | xmlRegFreeExecCtxt(exec);
|
---|
288 |
|
---|
289 | /* free the regexp */
|
---|
290 | xmlRegFreeRegexp(regexp);
|
---|
291 | } else {
|
---|
292 | int i;
|
---|
293 |
|
---|
294 | for (i = 1;i < argc;i++)
|
---|
295 | testRegexpFile(argv[i]);
|
---|
296 | }
|
---|
297 |
|
---|
298 | xmlCleanupParser();
|
---|
299 | xmlMemoryDump();
|
---|
300 | return(0);
|
---|
301 | }
|
---|
302 |
|
---|
303 | #else
|
---|
304 | #include <stdio.h>
|
---|
305 | int main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) {
|
---|
306 | printf("%s : Automata support not compiled in\n", argv[0]);
|
---|
307 | return(0);
|
---|
308 | }
|
---|
309 | #endif /* LIBXML_AUTOMATA_ENABLED */
|
---|