#include "common.h"
#include "ZRegexScanner.h"

ZRegexScanner::ZRegexScanner() :
	iLastError(0),
	nMatched(0)
{
	memset(&regex,0,sizeof(regex));
}

ZRegexScanner::~ZRegexScanner()
{
	regfree(&regex);
}

void ZRegexScanner::saveLastError(int v) 
{
	iLastError = v;
	int n = regerror(v,&regex,0,0);
	regerror(v,&regex,sLastError.getBuffer(n),n);
}

bool ZRegexScanner::setPattern(const char* s) 
{
	int v = regcomp(&regex,s,REG_EXTENDED);
	if (0 == v) {
		return true;
	}
	saveLastError(v);
	return false;
}

void ZRegexScanner::onLine(const char* s)
{
	++nLines;
	cbFile += strlen(s);
	int v = regexec(&regex,s,N_MATCH,match,0);
	if (REG_NOMATCH == v) {
		return;
	}
	if (0 == v) {
		++nMatched;
		ZString sMatch;
		int i1 = match[1].rm_so;
		int i2 = match[1].rm_eo;
		sMatch.strcpy(s + i1,i2 - i1);
		//printf("MATCH '%s'\n",sMatch.getBuffer());
		return;
	}
	saveLastError(v);
}