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source: vbox/trunk/src/libs/libxml2-2.6.31/testRegexp.c@ 47596

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libxml-2.6.31 unmodified
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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_REGEXP_ENABLED
11#include <string.h>
12
13#include <libxml/tree.h>
14#include <libxml/xmlregexp.h>
15
16static int repeat = 0;
17static int debug = 0;
18
19static void testRegexp(xmlRegexpPtr comp, const char *value) {
20 int ret;
21
22 ret = xmlRegexpExec(comp, (const xmlChar *) value);
23 if (ret == 1)
24 printf("%s: Ok\n", value);
25 else if (ret == 0)
26 printf("%s: Fail\n", value);
27 else
28 printf("%s: Error: %d\n", value, ret);
29 if (repeat) {
30 int j;
31 for (j = 0;j < 999999;j++)
32 xmlRegexpExec(comp, (const xmlChar *) value);
33 }
34}
35
36static void
37testRegexpFile(const char *filename) {
38 xmlRegexpPtr comp = NULL;
39 FILE *input;
40 char expression[5000];
41 int len;
42
43 input = fopen(filename, "r");
44 if (input == NULL) {
45 xmlGenericError(xmlGenericErrorContext,
46 "Cannot open %s for reading\n", filename);
47 return;
48 }
49 while (fgets(expression, 4500, input) != NULL) {
50 len = strlen(expression);
51 len--;
52 while ((len >= 0) &&
53 ((expression[len] == '\n') || (expression[len] == '\t') ||
54 (expression[len] == '\r') || (expression[len] == ' '))) len--;
55 expression[len + 1] = 0;
56 if (len >= 0) {
57 if (expression[0] == '#')
58 continue;
59 if ((expression[0] == '=') && (expression[1] == '>')) {
60 char *pattern = &expression[2];
61
62 if (comp != NULL) {
63 xmlRegFreeRegexp(comp);
64 comp = NULL;
65 }
66 printf("Regexp: %s\n", pattern) ;
67 comp = xmlRegexpCompile((const xmlChar *) pattern);
68 if (comp == NULL) {
69 printf(" failed to compile\n");
70 break;
71 }
72 } else if (comp == NULL) {
73 printf("Regexp: %s\n", expression) ;
74 comp = xmlRegexpCompile((const xmlChar *) expression);
75 if (comp == NULL) {
76 printf(" failed to compile\n");
77 break;
78 }
79 } else if (comp != NULL) {
80 testRegexp(comp, expression);
81 }
82 }
83 }
84 fclose(input);
85 if (comp != NULL)
86 xmlRegFreeRegexp(comp);
87}
88
89#ifdef LIBXML_EXPR_ENABLED
90static void
91runFileTest(xmlExpCtxtPtr ctxt, const char *filename) {
92 xmlExpNodePtr expr = NULL, sub;
93 FILE *input;
94 char expression[5000];
95 int len;
96
97 input = fopen(filename, "r");
98 if (input == NULL) {
99 xmlGenericError(xmlGenericErrorContext,
100 "Cannot open %s for reading\n", filename);
101 return;
102 }
103 while (fgets(expression, 4500, input) != NULL) {
104 len = strlen(expression);
105 len--;
106 while ((len >= 0) &&
107 ((expression[len] == '\n') || (expression[len] == '\t') ||
108 (expression[len] == '\r') || (expression[len] == ' '))) len--;
109 expression[len + 1] = 0;
110 if (len >= 0) {
111 if (expression[0] == '#')
112 continue;
113 if ((expression[0] == '=') && (expression[1] == '>')) {
114 char *str = &expression[2];
115
116 if (expr != NULL) {
117 xmlExpFree(ctxt, expr);
118 if (xmlExpCtxtNbNodes(ctxt) != 0)
119 printf(" Parse/free of Expression leaked %d\n",
120 xmlExpCtxtNbNodes(ctxt));
121 expr = NULL;
122 }
123 printf("Expression: %s\n", str) ;
124 expr = xmlExpParse(ctxt, str);
125 if (expr == NULL) {
126 printf(" parsing Failed\n");
127 break;
128 }
129 } else if (expr != NULL) {
130 int expect = -1;
131 int nodes1, nodes2;
132
133 if (expression[0] == '0')
134 expect = 0;
135 if (expression[0] == '1')
136 expect = 1;
137 printf("Subexp: %s", expression + 2) ;
138 nodes1 = xmlExpCtxtNbNodes(ctxt);
139 sub = xmlExpParse(ctxt, expression + 2);
140 if (sub == NULL) {
141 printf(" parsing Failed\n");
142 break;
143 } else {
144 int ret;
145
146 nodes2 = xmlExpCtxtNbNodes(ctxt);
147 ret = xmlExpSubsume(ctxt, expr, sub);
148
149 if ((expect == 1) && (ret == 1)) {
150 printf(" => accept, Ok\n");
151 } else if ((expect == 0) && (ret == 0)) {
152 printf(" => reject, Ok\n");
153 } else if ((expect == 1) && (ret == 0)) {
154 printf(" => reject, Failed\n");
155 } else if ((expect == 0) && (ret == 1)) {
156 printf(" => accept, Failed\n");
157 } else {
158 printf(" => fail internally\n");
159 }
160 if (xmlExpCtxtNbNodes(ctxt) > nodes2) {
161 printf(" Subsume leaked %d\n",
162 xmlExpCtxtNbNodes(ctxt) - nodes2);
163 nodes1 += xmlExpCtxtNbNodes(ctxt) - nodes2;
164 }
165 xmlExpFree(ctxt, sub);
166 if (xmlExpCtxtNbNodes(ctxt) > nodes1) {
167 printf(" Parse/free leaked %d\n",
168 xmlExpCtxtNbNodes(ctxt) - nodes1);
169 }
170 }
171
172 }
173 }
174 }
175 if (expr != NULL) {
176 xmlExpFree(ctxt, expr);
177 if (xmlExpCtxtNbNodes(ctxt) != 0)
178 printf(" Parse/free of Expression leaked %d\n",
179 xmlExpCtxtNbNodes(ctxt));
180 }
181 fclose(input);
182}
183
184static void
185testReduce(xmlExpCtxtPtr ctxt, xmlExpNodePtr expr, const char *tst) {
186 xmlBufferPtr xmlExpBuf;
187 xmlExpNodePtr sub, deriv;
188 xmlExpBuf = xmlBufferCreate();
189
190 sub = xmlExpParse(ctxt, tst);
191 if (sub == NULL) {
192 printf("Subset %s failed to parse\n", tst);
193 return;
194 }
195 xmlExpDump(xmlExpBuf, sub);
196 printf("Subset parsed as: %s\n",
197 (const char *) xmlBufferContent(xmlExpBuf));
198 deriv = xmlExpExpDerive(ctxt, expr, sub);
199 if (deriv == NULL) {
200 printf("Derivation led to an internal error, report this !\n");
201 return;
202 } else {
203 xmlBufferEmpty(xmlExpBuf);
204 xmlExpDump(xmlExpBuf, deriv);
205 if (xmlExpIsNillable(deriv))
206 printf("Resulting nillable derivation: %s\n",
207 (const char *) xmlBufferContent(xmlExpBuf));
208 else
209 printf("Resulting derivation: %s\n",
210 (const char *) xmlBufferContent(xmlExpBuf));
211 xmlExpFree(ctxt, deriv);
212 }
213 xmlExpFree(ctxt, sub);
214}
215
216static void
217exprDebug(xmlExpCtxtPtr ctxt, xmlExpNodePtr expr) {
218 xmlBufferPtr xmlExpBuf;
219 xmlExpNodePtr deriv;
220 const char *list[40];
221 int ret;
222
223 xmlExpBuf = xmlBufferCreate();
224
225 if (expr == NULL) {
226 printf("Failed to parse\n");
227 return;
228 }
229 xmlExpDump(xmlExpBuf, expr);
230 printf("Parsed as: %s\n", (const char *) xmlBufferContent(xmlExpBuf));
231 printf("Max token input = %d\n", xmlExpMaxToken(expr));
232 if (xmlExpIsNillable(expr) == 1)
233 printf("Is nillable\n");
234 ret = xmlExpGetLanguage(ctxt, expr, (const xmlChar **) &list[0], 40);
235 if (ret < 0)
236 printf("Failed to get list: %d\n", ret);
237 else {
238 int i;
239
240 printf("Language has %d strings, testing string derivations\n", ret);
241 for (i = 0;i < ret;i++) {
242 deriv = xmlExpStringDerive(ctxt, expr, BAD_CAST list[i], -1);
243 if (deriv == NULL) {
244 printf(" %s -> derivation failed\n", list[i]);
245 } else {
246 xmlBufferEmpty(xmlExpBuf);
247 xmlExpDump(xmlExpBuf, deriv);
248 printf(" %s -> %s\n", list[i],
249 (const char *) xmlBufferContent(xmlExpBuf));
250 }
251 xmlExpFree(ctxt, deriv);
252 }
253 }
254 xmlBufferFree(xmlExpBuf);
255}
256#endif
257
258static void usage(const char *name) {
259 fprintf(stderr, "Usage: %s [flags]\n", name);
260 fprintf(stderr, "Testing tool for libxml2 string and pattern regexps\n");
261 fprintf(stderr, " --debug: switch on debugging\n");
262 fprintf(stderr, " --repeat: loop on the operation\n");
263#ifdef LIBXML_EXPR_ENABLED
264 fprintf(stderr, " --expr: test xmlExp and not xmlRegexp\n");
265#endif
266 fprintf(stderr, " --input filename: use the given filename for regexp\n");
267 fprintf(stderr, " --input filename: use the given filename for exp\n");
268}
269
270int main(int argc, char **argv) {
271 xmlRegexpPtr comp = NULL;
272#ifdef LIBXML_EXPR_ENABLED
273 xmlExpNodePtr expr = NULL;
274 int use_exp = 0;
275 xmlExpCtxtPtr ctxt = NULL;
276#endif
277 const char *pattern = NULL;
278 char *filename = NULL;
279 int i;
280
281 xmlInitMemory();
282
283 if (argc <= 1) {
284 usage(argv[0]);
285 return(1);
286 }
287 for (i = 1; i < argc ; i++) {
288 if (!strcmp(argv[i], "-"))
289 break;
290
291 if (argv[i][0] != '-')
292 continue;
293 if ((!strcmp(argv[i], "-debug")) || (!strcmp(argv[i], "--debug"))) {
294 debug++;
295 } else if ((!strcmp(argv[i], "-repeat")) ||
296 (!strcmp(argv[i], "--repeat"))) {
297 repeat++;
298#ifdef LIBXML_EXPR_ENABLED
299 } else if ((!strcmp(argv[i], "-expr")) ||
300 (!strcmp(argv[i], "--expr"))) {
301 use_exp++;
302#endif
303 } else if ((!strcmp(argv[i], "-i")) || (!strcmp(argv[i], "-f")) ||
304 (!strcmp(argv[i], "--input")))
305 filename = argv[++i];
306 else {
307 fprintf(stderr, "Unknown option %s\n", argv[i]);
308 usage(argv[0]);
309 }
310 }
311
312#ifdef LIBXML_EXPR_ENABLED
313 if (use_exp)
314 ctxt = xmlExpNewCtxt(0, NULL);
315#endif
316
317 if (filename != NULL) {
318#ifdef LIBXML_EXPR_ENABLED
319 if (use_exp)
320 runFileTest(ctxt, filename);
321 else
322#endif
323 testRegexpFile(filename);
324 } else {
325#ifdef LIBXML_EXPR_ENABLED
326 if (use_exp) {
327 for (i = 1; i < argc ; i++) {
328 if ((argv[i][0] != '-') || (strcmp(argv[i], "-") == 0)) {
329 if (pattern == NULL) {
330 pattern = argv[i];
331 printf("Testing expr %s:\n", pattern);
332 expr = xmlExpParse(ctxt, pattern);
333 if (expr == NULL) {
334 printf(" failed to compile\n");
335 break;
336 }
337 if (debug) {
338 exprDebug(ctxt, expr);
339 }
340 } else {
341 testReduce(ctxt, expr, argv[i]);
342 }
343 }
344 }
345 if (expr != NULL)
346 xmlExpFree(ctxt, expr);
347 } else
348#endif
349 {
350 for (i = 1; i < argc ; i++) {
351 if ((argv[i][0] != '-') || (strcmp(argv[i], "-") == 0)) {
352 if (pattern == NULL) {
353 pattern = argv[i];
354 printf("Testing %s:\n", pattern);
355 comp = xmlRegexpCompile((const xmlChar *) pattern);
356 if (comp == NULL) {
357 printf(" failed to compile\n");
358 break;
359 }
360 if (debug)
361 xmlRegexpPrint(stdout, comp);
362 } else {
363 testRegexp(comp, argv[i]);
364 }
365 }
366 }
367 if (comp != NULL)
368 xmlRegFreeRegexp(comp);
369 }
370 }
371#ifdef LIBXML_EXPR_ENABLED
372 if (ctxt != NULL) {
373 printf("Ops: %d nodes, %d cons\n",
374 xmlExpCtxtNbNodes(ctxt), xmlExpCtxtNbCons(ctxt));
375 xmlExpFreeCtxt(ctxt);
376 }
377#endif
378 xmlCleanupParser();
379 xmlMemoryDump();
380 return(0);
381}
382
383#else
384#include <stdio.h>
385int main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) {
386 printf("%s : Regexp support not compiled in\n", argv[0]);
387 return(0);
388}
389#endif /* LIBXML_REGEXP_ENABLED */
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