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/*
* 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_REGEXP_ENABLED
#include <string.h>
#include <libxml/tree.h>
#include <libxml/xmlregexp.h>
static int repeat = 0;
static int debug = 0;
static void testRegexp(xmlRegexpPtr comp, const char *value) {
int ret;
ret = xmlRegexpExec(comp, (const xmlChar *) value);
if (ret == 1)
printf("%s: Ok\n", value);
else if (ret == 0)
printf("%s: Fail\n", value);
else
printf("%s: Error: %d\n", value, ret);
if (repeat) {
int j;
for (j = 0;j < 999999;j++)
xmlRegexpExec(comp, (const xmlChar *) value);
}
}
static void
testRegexpFile(const char *filename) {
xmlRegexpPtr comp = NULL;
FILE *input;
char expression[5000];
int len;
input = fopen(filename, "r");
if (input == NULL) {
xmlGenericError(xmlGenericErrorContext,
"Cannot open %s for reading\n", filename);
return;
}
while (fgets(expression, 4500, input) != NULL) {
len = strlen(expression);
len--;
while ((len >= 0) &&
((expression[len] == '\n') || (expression[len] == '\t') ||
(expression[len] == '\r') || (expression[len] == ' '))) len--;
expression[len + 1] = 0;
if (len >= 0) {
if (expression[0] == '#')
continue;
if ((expression[0] == '=') && (expression[1] == '>')) {
char *pattern = &expression[2];
if (comp != NULL) {
xmlRegFreeRegexp(comp);
comp = NULL;
}
printf("Regexp: %s\n", pattern) ;
comp = xmlRegexpCompile((const xmlChar *) pattern);
if (comp == NULL) {
printf(" failed to compile\n");
break;
}
} else if (comp == NULL) {
printf("Regexp: %s\n", expression) ;
comp = xmlRegexpCompile((const xmlChar *) expression);
if (comp == NULL) {
printf(" failed to compile\n");
break;
}
} else if (comp != NULL) {
testRegexp(comp, expression);
}
}
}
fclose(input);
if (comp != NULL)
xmlRegFreeRegexp(comp);
}
#ifdef LIBXML_EXPR_ENABLED
static void
runFileTest(xmlExpCtxtPtr ctxt, const char *filename) {
xmlExpNodePtr expr = NULL, sub;
FILE *input;
char expression[5000];
int len;
input = fopen(filename, "r");
if (input == NULL) {
xmlGenericError(xmlGenericErrorContext,
"Cannot open %s for reading\n", filename);
return;
}
while (fgets(expression, 4500, input) != NULL) {
len = strlen(expression);
len--;
while ((len >= 0) &&
((expression[len] == '\n') || (expression[len] == '\t') ||
(expression[len] == '\r') || (expression[len] == ' '))) len--;
expression[len + 1] = 0;
if (len >= 0) {
if (expression[0] == '#')
continue;
if ((expression[0] == '=') && (expression[1] == '>')) {
char *str = &expression[2];
if (expr != NULL) {
xmlExpFree(ctxt, expr);
if (xmlExpCtxtNbNodes(ctxt) != 0)
printf(" Parse/free of Expression leaked %d\n",
xmlExpCtxtNbNodes(ctxt));
expr = NULL;
}
printf("Expression: %s\n", str) ;
expr = xmlExpParse(ctxt, str);
if (expr == NULL) {
printf(" parsing Failed\n");
break;
}
} else if (expr != NULL) {
int expect = -1;
int nodes1, nodes2;
if (expression[0] == '0')
expect = 0;
if (expression[0] == '1')
expect = 1;
printf("Subexp: %s", expression + 2) ;
nodes1 = xmlExpCtxtNbNodes(ctxt);
sub = xmlExpParse(ctxt, expression + 2);
if (sub == NULL) {
printf(" parsing Failed\n");
break;
} else {
int ret;
nodes2 = xmlExpCtxtNbNodes(ctxt);
ret = xmlExpSubsume(ctxt, expr, sub);
if ((expect == 1) && (ret == 1)) {
printf(" => accept, Ok\n");
} else if ((expect == 0) && (ret == 0)) {
printf(" => reject, Ok\n");
} else if ((expect == 1) && (ret == 0)) {
printf(" => reject, Failed\n");
} else if ((expect == 0) && (ret == 1)) {
printf(" => accept, Failed\n");
} else {
printf(" => fail internally\n");
}
if (xmlExpCtxtNbNodes(ctxt) > nodes2) {
printf(" Subsume leaked %d\n",
xmlExpCtxtNbNodes(ctxt) - nodes2);
nodes1 += xmlExpCtxtNbNodes(ctxt) - nodes2;
}
xmlExpFree(ctxt, sub);
if (xmlExpCtxtNbNodes(ctxt) > nodes1) {
printf(" Parse/free leaked %d\n",
xmlExpCtxtNbNodes(ctxt) - nodes1);
}
}
}
}
}
if (expr != NULL) {
xmlExpFree(ctxt, expr);
if (xmlExpCtxtNbNodes(ctxt) != 0)
printf(" Parse/free of Expression leaked %d\n",
xmlExpCtxtNbNodes(ctxt));
}
fclose(input);
}
static void
testReduce(xmlExpCtxtPtr ctxt, xmlExpNodePtr expr, const char *tst) {
xmlBufferPtr xmlExpBuf;
xmlExpNodePtr sub, deriv;
xmlExpBuf = xmlBufferCreate();
sub = xmlExpParse(ctxt, tst);
if (sub == NULL) {
printf("Subset %s failed to parse\n", tst);
return;
}
xmlExpDump(xmlExpBuf, sub);
printf("Subset parsed as: %s\n",
(const char *) xmlBufferContent(xmlExpBuf));
deriv = xmlExpExpDerive(ctxt, expr, sub);
if (deriv == NULL) {
printf("Derivation led to an internal error, report this !\n");
return;
} else {
xmlBufferEmpty(xmlExpBuf);
xmlExpDump(xmlExpBuf, deriv);
if (xmlExpIsNillable(deriv))
printf("Resulting nillable derivation: %s\n",
(const char *) xmlBufferContent(xmlExpBuf));
else
printf("Resulting derivation: %s\n",
(const char *) xmlBufferContent(xmlExpBuf));
xmlExpFree(ctxt, deriv);
}
xmlExpFree(ctxt, sub);
}
static void
exprDebug(xmlExpCtxtPtr ctxt, xmlExpNodePtr expr) {
xmlBufferPtr xmlExpBuf;
xmlExpNodePtr deriv;
const char *list[40];
int ret;
xmlExpBuf = xmlBufferCreate();
if (expr == NULL) {
printf("Failed to parse\n");
return;
}
xmlExpDump(xmlExpBuf, expr);
printf("Parsed as: %s\n", (const char *) xmlBufferContent(xmlExpBuf));
printf("Max token input = %d\n", xmlExpMaxToken(expr));
if (xmlExpIsNillable(expr) == 1)
printf("Is nillable\n");
ret = xmlExpGetLanguage(ctxt, expr, (const xmlChar **) &list[0], 40);
if (ret < 0)
printf("Failed to get list: %d\n", ret);
else {
int i;
printf("Language has %d strings, testing string derivations\n", ret);
for (i = 0;i < ret;i++) {
deriv = xmlExpStringDerive(ctxt, expr, BAD_CAST list[i], -1);
if (deriv == NULL) {
printf(" %s -> derivation failed\n", list[i]);
} else {
xmlBufferEmpty(xmlExpBuf);
xmlExpDump(xmlExpBuf, deriv);
printf(" %s -> %s\n", list[i],
(const char *) xmlBufferContent(xmlExpBuf));
}
xmlExpFree(ctxt, deriv);
}
}
xmlBufferFree(xmlExpBuf);
}
#endif
static void usage(const char *name) {
fprintf(stderr, "Usage: %s [flags]\n", name);
fprintf(stderr, "Testing tool for libxml2 string and pattern regexps\n");
fprintf(stderr, " --debug: switch on debugging\n");
fprintf(stderr, " --repeat: loop on the operation\n");
#ifdef LIBXML_EXPR_ENABLED
fprintf(stderr, " --expr: test xmlExp and not xmlRegexp\n");
#endif
fprintf(stderr, " --input filename: use the given filename for regexp\n");
fprintf(stderr, " --input filename: use the given filename for exp\n");
}
int main(int argc, char **argv) {
xmlRegexpPtr comp = NULL;
#ifdef LIBXML_EXPR_ENABLED
xmlExpNodePtr expr = NULL;
int use_exp = 0;
xmlExpCtxtPtr ctxt = NULL;
#endif
const char *pattern = NULL;
char *filename = NULL;
int i;
xmlInitMemory();
if (argc <= 1) {
usage(argv[0]);
return(1);
}
for (i = 1; i < argc ; i++) {
if (!strcmp(argv[i], "-"))
break;
if (argv[i][0] != '-')
continue;
if (!strcmp(argv[i], "--"))
break;
if ((!strcmp(argv[i], "-debug")) || (!strcmp(argv[i], "--debug"))) {
debug++;
} else if ((!strcmp(argv[i], "-repeat")) ||
(!strcmp(argv[i], "--repeat"))) {
repeat++;
#ifdef LIBXML_EXPR_ENABLED
} else if ((!strcmp(argv[i], "-expr")) ||
(!strcmp(argv[i], "--expr"))) {
use_exp++;
#endif
} else if ((!strcmp(argv[i], "-i")) || (!strcmp(argv[i], "-f")) ||
(!strcmp(argv[i], "--input")))
filename = argv[++i];
else {
fprintf(stderr, "Unknown option %s\n", argv[i]);
usage(argv[0]);
}
}
#ifdef LIBXML_EXPR_ENABLED
if (use_exp)
ctxt = xmlExpNewCtxt(0, NULL);
#endif
if (filename != NULL) {
#ifdef LIBXML_EXPR_ENABLED
if (use_exp)
runFileTest(ctxt, filename);
else
#endif
testRegexpFile(filename);
} else {
int data = 0;
#ifdef LIBXML_EXPR_ENABLED
if (use_exp) {
for (i = 1; i < argc ; i++) {
if (strcmp(argv[i], "--") == 0)
data = 1;
else if ((argv[i][0] != '-') || (strcmp(argv[i], "-") == 0) ||
(data == 1)) {
if (pattern == NULL) {
pattern = argv[i];
printf("Testing expr %s:\n", pattern);
expr = xmlExpParse(ctxt, pattern);
if (expr == NULL) {
printf(" failed to compile\n");
break;
}
if (debug) {
exprDebug(ctxt, expr);
}
} else {
testReduce(ctxt, expr, argv[i]);
}
}
}
if (expr != NULL) {
xmlExpFree(ctxt, expr);
expr = NULL;
}
} else
#endif
{
for (i = 1; i < argc ; i++) {
if (strcmp(argv[i], "--") == 0)
data = 1;
else if ((argv[i][0] != '-') || (strcmp(argv[i], "-") == 0) ||
(data == 1)) {
if (pattern == NULL) {
pattern = argv[i];
printf("Testing %s:\n", pattern);
comp = xmlRegexpCompile((const xmlChar *) pattern);
if (comp == NULL) {
printf(" failed to compile\n");
break;
}
if (debug)
xmlRegexpPrint(stdout, comp);
} else {
testRegexp(comp, argv[i]);
}
}
}
if (comp != NULL)
xmlRegFreeRegexp(comp);
}
}
#ifdef LIBXML_EXPR_ENABLED
if (ctxt != NULL) {
printf("Ops: %d nodes, %d cons\n",
xmlExpCtxtNbNodes(ctxt), xmlExpCtxtNbCons(ctxt));
xmlExpFreeCtxt(ctxt);
}
#endif
xmlCleanupParser();
xmlMemoryDump();
return(0);
}
#else
#include <stdio.h>
int main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) {
printf("%s : Regexp support not compiled in\n", argv[0]);
return(0);
}
#endif /* LIBXML_REGEXP_ENABLED */
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