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// Copyright (c) 2003-2006 stefan kersten
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
// USA

#include "SC_StringParser.h"
#include "SC_BoundsMacros.h"
#include <string.h>
#include <stdlib.h>

SC_StringParser::SC_StringParser()
: mSpec(0), mStart(0), mEnd(0), mSep(0)
{
}

SC_StringParser::SC_StringParser(const char *spec, char sep)
: mSpec(spec), mStart(0), mEnd(0), mSep(sep)
{
if (mSpec) {
size_t len = strlen(mSpec);
if (len > 0) {
mStart = mSpec;
mEnd = mStart + len;
} else {
mSpec = 0;
}
}
}

bool SC_StringParser::AtEnd() const
{
return mSpec == 0;
}

const char *SC_StringParser::NextToken()
{
if (mSpec) {
const char *end = strchr(mStart, mSep);
if (end == 0) {
end = mEnd;
}

size_t len = sc_min(SC_MAX_TOKEN_LENGTH-1, end-mStart);
memcpy(mBuf, mStart, len);
mBuf[len] = '\0';

if (end == mEnd) {
mSpec = 0;
} else {
mStart = end+1;
}

return mBuf;
}

return 0;
}

// EOF
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