regular expressions in C match and print - c

Question

I have lines from file like this:
{123} {12.3.2015 moday} {THIS IS A TEST}
is It possible to get every value between brackets {} and insert into array?
Also I wold like to know if there is some other solution for this problem...
to get like this:
array( 123,
'12.3.2015 moday',
'THIS IS A TEST'
)
My try:
int r;
regex_t reg;
regmatch_t match[2];
char *line = "{123} {12.3.2015 moday} {THIS IS A TEST}";
regcomp(&reg, "[{](.*?)*[}]", REG_ICASE | REG_EXTENDED);
r = regexec(&reg, line, 2, match, 0);
if (r == 0) {
printf("Match!\n");
printf("0: [%.*s]\n", match[0].rm_eo - match[0].rm_so, line + match[0].rm_so);
printf("1: %.*s\n", match[1].rm_eo - match[1].rm_so, line + match[1].rm_so);
} else {
printf("NO match!\n");
}
This will result:
123} {12.3.2015 moday} {THIS IS A TEST
Anyone know how to improve this?

Answer 1

To help you you can use the regex101 website which is really useful.
Then I suggest you to use this regex:
/(?<=\{).*?(?=\})/g
Or any of these ones:
/\{\K.*?(?=\})/g
/\{\K[^\}]+/g
/\{(.*?)\}/g
Also available here for the first one:
https://regex101.com/r/bB6sE8/1
In C you could start with this which is an example for here:
#include <stdio.h>
#include <string.h>
#include <regex.h>
int main ()
{
char * source = "{123} {12.3.2015 moday} {THIS IS A TEST}";
char * regexString = "{([^}]*)}";
size_t maxGroups = 10;
regex_t regexCompiled;
regmatch_t groupArray[10];
unsigned int m;
char * cursor;
if (regcomp(&regexCompiled, regexString, REG_EXTENDED))
{
printf("Could not compile regular expression.\n");
return 1;
};
cursor = source;
while (!regexec(&regexCompiled, cursor, 10, groupArray, 0))
{
unsigned int offset = 0;
if (groupArray[1].rm_so == -1)
break; // No more groups
offset = groupArray[1].rm_eo;
char cursorCopy[strlen(cursor) + 1];
strcpy(cursorCopy, cursor);
cursorCopy[groupArray[1].rm_eo] = 0;
printf("%s\n", cursorCopy + groupArray[1].rm_so);
cursor += offset;
}
regfree(&regexCompiled);
return 0;
}