please insert also perl and PCRE

[faustfa]

Hi can you insert also Syntax language for PERL and PCRE and PCRE2 and classical C the world would reward you , and i too thanks so much for your big work

[noxone]

@faustfa : please have a look at #191 whether that C code looks good for you.

[noxone]

Hi @faustfa,

if I understand your request correctly, you want to add

• Perl as a language
• C as language

Regarding Perl:
It would be great to provide an example of working Perl code using a regex, as I never wrote Perl code yet.

Regarding C:
C using regex.h is handled in #191. But I have more trouble with C using pcre.h as the last time I used C was about 10 years ago and I'm not sure if my code is really correct. My current approach looks like this:

#include "pcre.h"
#include <string.h>

int usePcre(char* textToCheck) {
    /* for pcre_compile */
    pcre* regex;
    const char* error;
    int erroffset;

    /* for pcre_exec */
    int rc;
    int ovector[30];

    /* to get substrings from regex */
    int rc2;
    const char *substring;
    
    /* return value */
    int returnValue = -1;

    regex = pcre_compile("regex", 0, &error, &erroffset, NULL);

    rc = pcre_exec(regex, NULL, textToCheck, (int)strlen(textToCheck), 0, 0, ovector, 30);

    if(rc == PCRE_ERROR_NOMATCH) {
        fprintf(stderr,"no match\n");
        returnValue = 0;
    } else if(rc < -1) {
        fprintf(stderr,"error %d from regex\n",rc);
        returnValue = -2;
    } else {
        returnValue = 1;
    }
    pcre_free(regex);

    return returnValue;
}

Is this code correct? Should something be different? And please provide details on how I can pass the options (multiline, case-insensitive, dot-all) to the regex. Otherwise I'm afraid I cannot add this snippet as I don't know how to generate it.

Thank you!

[noxone]

Hi @faustfa : Please comment on this PR. I have no knowledge how to use Perl and the C-PCRE code above is just a best guess from my side.
I would like you to approve the code or to provide other sample code that I can use.

If there is no reaction on this PR, I will close it soon.