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11-24-2010, 03:38 PM
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#1
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LQ Newbie
Registered: Sep 2006
Posts: 25
Rep: 
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Using regexec() to parse for multiple substrings
Hello,
I'm trying to use regcomp() and regexec() to parse long string into constituent substrings.
The string itself consists of comma-separated alphanumeric characters, as follows:
H,2,1,1,I,5,0,1,I,5,1,2,P,7,0,1,1,P,7,0,1,2
I would like to break the string into three substrings:
H,2,1,1,
I,5,0,1,I,5,1,2,
P,7,0,1,1,P,7,0,1,2
My code is:
Code:
char* test = "H,2,1,1,I,5,0,1,I,5,1,2,P,7,0,1,1,P,7,0,1,2";
char* pattern = "H(,[0-9]){3},I(,[0-9]){3},P(,[0-9]){4}";
regex_t rexpr;
regmatch_t match[3];
if( ( result = regcomp( &rexpr, pattern, 0 ) ) )
{
printf("Cannot compile pattern");
exit();
}
if( regexec(&rexpr, test, 3, &match[0], 0 ) )
{
printf("Cannot parse string");
exit();
}
I've found several code examples showing how to parse one substring. Is it possible to parse three substrings?
Many thanks,
Paul |
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