Thread: nightmare!! I really need help with this!

1. No. You will need "some library" (There are several available).
2. Yes. You want to do static linking. Search libcurl's website or forums for instructions on how to do this.
3. Go to regcomp and check out the example near the bottom of the page.

Never used it. Maybe it wants something like below (using an array of matches, since the regular expression might match a lot of cases). Just a sample code, no idea if it works.

Code:

#include <sys/types.h>
#include <regex.h>
#include <stdio.h>

int main(int argc, char *argv[]){
        regex_t regex;
	regmatch_t* pm;

        int reti;
	int len;
	
        reti = regcomp(&regex, "<title>(.*)</title>", REG_EXTENDED | REG_ICASE);
        int matches = regex.re_nsub;
        pm = malloc(matches * sizeof(*pm));
        reti = regexec(&regex, "dsfg<title>title 1</title> adfa\nsdf<title>title2</title>asd", matches, pm, 0);
	if (pm.rm_so==-1){
	  puts("Can't find it!");
	  
	} else { puts("got it!"); 
	    len = pm.rm_eo - pm.rm_so;
            for (i = 0; i < matches; ++i)
            {
	      printf("str %i\n", pm[i].rm_so);
	      printf("end %i\n", pm[i].rm_eo);
            }
	}


	regfree(&regex);
        free(pm);
        return 0;
}

Don't know much about regular expressions so if it was specified to match the first occurance, dunno why it doesn't.

Just add a number to go to the wildcard position (like the lenght of <title>)

You could integrate the library in your .exe, but that is not that simple. But you could copy all the files that are needed for the library in a folder then do something like

Code:

#include "regex.h"

(instead of <..>)

The files needed would probably be regex.h and regex.o or you would make a Makefile with regex.h and regex.cpp.

NeonBlack, the regex library can be compiled into exe too, correct? Thanks I got it!

C_ntua, I didn't know regex.re_nsub stores the number of maches, thanks!


So the problem I'm facing now is that my regex doesn't work as expected. I tested my regex on this website RegExr.


Pattern:

Code:

<title>(.*?)</title>

Text:

Code:

asd <title>title1</title> asdf <title>title2</title>as df <title>title3</title>sdf

The output - This is what I need!

asd <title>title1</title> asdf <title>title2</title>as df <title>title3</title>sdf

However, this is what I'm getting with my code:

asd <title>title1</title> asdf <title>title2</title>as df <title>title3</title>sdf

In the output below, the end shows the location of the last </title> instead of the first one. The re.re_nsub show only one match. It acts like I'm doing "<title>(.*)</title>", instead of "<title>(.*?)</title>" as a pattern. What am I doing wrong? Thank you!

Output:

found: 1
str: 4
end: 71

Source:

Code:

#include <sys/types.h>
#include <regex.h>
#include <stdio.h>

int main(int argc, char *argv[]){
  
    char buffer[] = "asd <title>title1</title> asdf <title>title2</title>as df <title>title3</title>sdf";
      
    regex_t re;
    regmatch_t pm;
    int error;

      
    (void) regcomp (&re, "<title>(.*?)</title>", REG_EXTENDED);
    error = regexec (&re, &buffer[0], 1, &pm, 0);

    printf("found: %i\n", re.re_nsub);

    printf("str: %i\n", pm.rm_so);
    printf("end: %i\n", pm.rm_eo);

  return 0;
}

Did you read the link? Was there something specific you didn't understand? Does it still not work after trying what was written there?