Skip to content
This repository

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
branch: master
Fetching contributors…

Cannot retrieve contributors at this time

file 309 lines (285 sloc) 7.657 kb
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309
/*
* testRegexp.c: simple module for testing regular expressions
*
* See Copyright for the status of this software.
*
* Daniel Veillard <veillard@redhat.com>
*/

#include "libxml.h"
#ifdef LIBXML_AUTOMATA_ENABLED
#include <string.h>

#include <libxml/tree.h>
#include <libxml/xmlautomata.h>

static int scanNumber(char **ptr) {
    int ret = 0;
    char *cur;

    cur = *ptr;
    while ((*cur >= '0') && (*cur <= '9')) {
ret = ret * 10 + (*cur - '0');
cur++;
    }
    *ptr = cur;
    return(ret);
}

static void
testRegexpFile(const char *filename) {
    FILE *input;
    char expr[5000];
    int len;
    int ret;
    int i;
    xmlAutomataPtr am;
    xmlAutomataStatePtr states[1000];
    xmlRegexpPtr regexp = NULL;
    xmlRegExecCtxtPtr exec = NULL;

    for (i = 0;i<1000;i++)
states[i] = NULL;

    input = fopen(filename, "r");
    if (input == NULL) {
        xmlGenericError(xmlGenericErrorContext,
"Cannot open %s for reading\n", filename);
return;
    }

    am = xmlNewAutomata();
    if (am == NULL) {
        xmlGenericError(xmlGenericErrorContext,
"Cannot create automata\n");
fclose(input);
return;
    }
    states[0] = xmlAutomataGetInitState(am);
    if (states[0] == NULL) {
        xmlGenericError(xmlGenericErrorContext,
"Cannot get start state\n");
xmlFreeAutomata(am);
fclose(input);
return;
    }
    ret = 0;

    while (fgets(expr, 4500, input) != NULL) {
if (expr[0] == '#')
continue;
len = strlen(expr);
len--;
while ((len >= 0) &&
((expr[len] == '\n') || (expr[len] == '\t') ||
(expr[len] == '\r') || (expr[len] == ' '))) len--;
expr[len + 1] = 0;
if (len >= 0) {
if ((am != NULL) && (expr[0] == 't') && (expr[1] == ' ')) {
char *ptr = &expr[2];
int from, to;

from = scanNumber(&ptr);
if (*ptr != ' ') {
xmlGenericError(xmlGenericErrorContext,
"Bad line %s\n", expr);
break;
}
if (states[from] == NULL)
states[from] = xmlAutomataNewState(am);
ptr++;
to = scanNumber(&ptr);
if (*ptr != ' ') {
xmlGenericError(xmlGenericErrorContext,
"Bad line %s\n", expr);
break;
}
if (states[to] == NULL)
states[to] = xmlAutomataNewState(am);
ptr++;
xmlAutomataNewTransition(am, states[from], states[to],
BAD_CAST ptr, NULL);
} else if ((am != NULL) && (expr[0] == 'e') && (expr[1] == ' ')) {
char *ptr = &expr[2];
int from, to;

from = scanNumber(&ptr);
if (*ptr != ' ') {
xmlGenericError(xmlGenericErrorContext,
"Bad line %s\n", expr);
break;
}
if (states[from] == NULL)
states[from] = xmlAutomataNewState(am);
ptr++;
to = scanNumber(&ptr);
if (states[to] == NULL)
states[to] = xmlAutomataNewState(am);
xmlAutomataNewEpsilon(am, states[from], states[to]);
} else if ((am != NULL) && (expr[0] == 'f') && (expr[1] == ' ')) {
char *ptr = &expr[2];
int state;

state = scanNumber(&ptr);
if (states[state] == NULL) {
xmlGenericError(xmlGenericErrorContext,
"Bad state %d : %s\n", state, expr);
break;
}
xmlAutomataSetFinalState(am, states[state]);
} else if ((am != NULL) && (expr[0] == 'c') && (expr[1] == ' ')) {
char *ptr = &expr[2];
int from, to;
int min, max;

from = scanNumber(&ptr);
if (*ptr != ' ') {
xmlGenericError(xmlGenericErrorContext,
"Bad line %s\n", expr);
break;
}
if (states[from] == NULL)
states[from] = xmlAutomataNewState(am);
ptr++;
to = scanNumber(&ptr);
if (*ptr != ' ') {
xmlGenericError(xmlGenericErrorContext,
"Bad line %s\n", expr);
break;
}
if (states[to] == NULL)
states[to] = xmlAutomataNewState(am);
ptr++;
min = scanNumber(&ptr);
if (*ptr != ' ') {
xmlGenericError(xmlGenericErrorContext,
"Bad line %s\n", expr);
break;
}
ptr++;
max = scanNumber(&ptr);
if (*ptr != ' ') {
xmlGenericError(xmlGenericErrorContext,
"Bad line %s\n", expr);
break;
}
ptr++;
xmlAutomataNewCountTrans(am, states[from], states[to],
BAD_CAST ptr, min, max, NULL);
} else if ((am != NULL) && (expr[0] == '-') && (expr[1] == '-')) {
/* end of the automata */
regexp = xmlAutomataCompile(am);
xmlFreeAutomata(am);
am = NULL;
if (regexp == NULL) {
xmlGenericError(xmlGenericErrorContext,
"Failed to compile the automata");
break;
}
} else if ((expr[0] == '=') && (expr[1] == '>')) {
if (regexp == NULL) {
printf("=> failed not compiled\n");
} else {
if (exec == NULL)
exec = xmlRegNewExecCtxt(regexp, NULL, NULL);
if (ret == 0) {
ret = xmlRegExecPushString(exec, NULL, NULL);
}
if (ret == 1)
printf("=> Passed\n");
else if ((ret == 0) || (ret == -1))
printf("=> Failed\n");
else if (ret < 0)
printf("=> Error\n");
xmlRegFreeExecCtxt(exec);
exec = NULL;
}
ret = 0;
} else if (regexp != NULL) {
if (exec == NULL)
exec = xmlRegNewExecCtxt(regexp, NULL, NULL);
ret = xmlRegExecPushString(exec, BAD_CAST expr, NULL);
} else {
xmlGenericError(xmlGenericErrorContext,
"Unexpected line %s\n", expr);
}
}
    }
    fclose(input);
    if (regexp != NULL)
xmlRegFreeRegexp(regexp);
    if (exec != NULL)
xmlRegFreeExecCtxt(exec);
    if (am != NULL)
xmlFreeAutomata(am);
}

int main(int argc, char **argv) {

    xmlInitMemory();

    if (argc == 1) {
int ret;
xmlAutomataPtr am;
xmlAutomataStatePtr start, cur;
xmlRegexpPtr regexp;
xmlRegExecCtxtPtr exec;

am = xmlNewAutomata();
start = xmlAutomataGetInitState(am);

/* generate a[ba]*a */
cur = xmlAutomataNewTransition(am, start, NULL, BAD_CAST"a", NULL);
xmlAutomataNewTransition(am, cur, cur, BAD_CAST"b", NULL);
xmlAutomataNewTransition(am, cur, cur, BAD_CAST"a", NULL);
cur = xmlAutomataNewCountTrans(am, cur, NULL, BAD_CAST"a", 2, 3, NULL);
xmlAutomataSetFinalState(am, cur);

/* compile it in a regexp and free the automata */
regexp = xmlAutomataCompile(am);
xmlFreeAutomata(am);

/* test the regexp */
xmlRegexpPrint(stdout, regexp);
exec = xmlRegNewExecCtxt(regexp, NULL, NULL);
ret = xmlRegExecPushString(exec, BAD_CAST"a", NULL);
if (ret == 1)
printf("final\n");
else if (ret < 0)
printf("error\n");
ret =xmlRegExecPushString(exec, BAD_CAST"a", NULL);
if (ret == 1)
printf("final\n");
else if (ret < 0)
printf("error\n");
ret =xmlRegExecPushString(exec, BAD_CAST"b", NULL);
if (ret == 1)
printf("final\n");
else if (ret < 0)
printf("error\n");
ret =xmlRegExecPushString(exec, BAD_CAST"a", NULL);
if (ret == 1)
printf("final\n");
else if (ret < 0)
printf("error\n");
ret =xmlRegExecPushString(exec, BAD_CAST"a", NULL);
if (ret == 1)
printf("final\n");
else if (ret < 0)
printf("error\n");
ret =xmlRegExecPushString(exec, BAD_CAST"a", NULL);
if (ret == 1)
printf("final\n");
else if (ret < 0)
printf("error\n");
ret =xmlRegExecPushString(exec, BAD_CAST"a", NULL);
if (ret == 1)
printf("final\n");
else if (ret < 0)
printf("error\n");
if (ret == 0) {
ret = xmlRegExecPushString(exec, NULL, NULL);
if (ret == 1)
printf("final\n");
else if (ret < 0)
printf("error\n");
}
xmlRegFreeExecCtxt(exec);

/* free the regexp */
xmlRegFreeRegexp(regexp);
    } else {
int i;

for (i = 1;i < argc;i++)
testRegexpFile(argv[i]);
    }

    xmlCleanupParser();
    xmlMemoryDump();
    return(0);
}

#else
#include <stdio.h>
int main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) {
    printf("%s : Automata support not compiled in\n", argv[0]);
    return(0);
}
#endif /* LIBXML_AUTOMATA_ENABLED */
Something went wrong with that request. Please try again.