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例子1:
#include stdio.h>
#include string.h>
#include pcre.h>
/**********************************************************************
*#include *
*parameters: src: string *
* pattern: regular expression *
*return: match >= 0 and nomatch
int fun_ismatch( char* src, char* pattern)
{
pcre *re;
const char *error;
int erroffset;
int rc;
if( (re = pcre_compile( pattern, 0, &error, &erroffset, NULL)) == NULL) goto bad;
if( (rc = pcre_exec( re, NULL, src, strlen(src), 0, 0, NULL, 0)) 0) goto bad;
free(re);
return rc;
bad:
free(re);
return -1;
}
int main (int argc, char **argv)
{
struct timeval tpstart,tpend;
const char *pattern = "^http://.+?btchina.net/download.php*";
argv[1] = "http://dl1.www2.btchina.net/download.php?s=1125f72b0f6f6887&attachmentid=1064643@http://bt3.btchina.net/";
gettimeofday( &tpstart, NULL);
int result = fun_ismatch( argv[1], (char*)pattern);
gettimeofday( &tpend, NULL);
printf ("result: %d\nuse time: %u\n", result, tpend.tv_usec - tpstart.tv_usec);
return;
}
例子2:
#include stdio.h>
#include string.h>
#include pcre.h>
#define OVECCOUNT 30 /* should be a multiple of 3 */
#define EBUFLEN 128
#define BUFLEN 1024
int main()
{
pcre *re;
const char *error;
int erroffset;
int ovector[OVECCOUNT];
int rc, i;
char src [] = "111 Hello World 222";
char pattern [] = "(.*)";
printf("String : %s\n", src);
printf("Pattern: \"%s\"\n", pattern);
re = pcre_compile(pattern, 0, &error, &erroffset, NULL);
if (re == NULL) {
printf("PCRE compilation failed at offset %d: %s\n", erroffset, error);
return 1;
}
rc = pcre_exec(re, NULL, src, strlen(src), 0, 0, ovector, OVECCOUNT);
if (rc 0) {
if (rc == PCRE_ERROR_NOMATCH) printf("Sorry, no match ...\n");
else printf("Matching error %d\n", rc);
free(re);
return 1;
}
printf("\nOK, has matched ...\n\n");
for (i = 0; i rc; i++) {
char *substring_start = src + ovector[2*i];
int substring_length = ovector[2*i+1] - ovector[2*i];
printf("%2d: %.*s\n", i, substring_length, substring_start);
}
free(re);
return 0;
}
本文来自ChinaUnix博客,如果查看原文请点:http://blog.chinaunix.net/u3/91335/showart_1903649.html |
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