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//
// C++ Implementation: srcuntabifier
//
// Description:
//
//
// Author: Lorenzo Bettini <http://www.lorenzobettini.it>, (C) 2004
//
// Copyright: See COPYING file that comes with this distribution
//
//
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "srcuntabifier.h"
#include <sstream>
#include <boost/regex.hpp>
namespace srchilite {
const boost::regex tabexp("[\\t]");
const string Untabifier::doPreformat(const string &s) {
boost::sregex_iterator m1(s.begin(), s.end(), tabexp);
boost::sregex_iterator m2;
if (m1 == m2) {
if (s[0] == '\n')
n_ = 0; // reset char counter
else
n_ += s.size();
return s;
}
std::ostringstream buffer;
string prefix;
string suffix;
for (boost::sregex_iterator it = m1; it != m2; ++it) {
prefix = it->prefix();
suffix = it->suffix();
if (prefix.size()) {
buffer << prefix;
n_ += prefix.size();
}
int nSpaces = nSpacesPerTab_ - n_ % nSpacesPerTab_;
buffer << string(nSpaces, ' ');
n_ += nSpaces;
}
if (suffix.size()) {
buffer << suffix;
n_ += suffix.size();
}
return buffer.str();
}
}
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