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/**********************************************************************
* $Id: StringTokenizer.cpp 1820 2006-09-06 16:54:23Z mloskot $
*
* GEOS - Geometry Engine Open Source
* http://geos.refractions.net
*
* Copyright (C) 2005-2006 Refractions Research Inc.
* Copyright (C) 2001-2002 Vivid Solutions Inc.
*
* This is free software; you can redistribute and/or modify it under
* the terms of the GNU Lesser General Public Licence as published
* by the Free Software Foundation.
* See the COPYING file for more information.
*
**********************************************************************/
#include <geos/io/StringTokenizer.h>
#include <string>
using namespace std;
namespace geos {
namespace io { // geos.io
/*public*/
StringTokenizer::StringTokenizer(const string &txt)
:
str(txt)
{
stok="";
ntok=0.0;
iter=str.begin();
}
/*public*/
int
StringTokenizer::nextToken()
{
string tok="";
if (iter==str.end())
return StringTokenizer::TT_EOF;
switch(*iter) {
case '(':
case ')':
case ',':
return *iter++;
case '\n':
case '\r':
case '\t':
case ' ':
string::size_type pos=str.find_first_not_of(" \n\r\t",
iter-str.begin());
if (pos==string::npos) {
return StringTokenizer::TT_EOF;
} else {
iter=str.begin()+pos;
return nextToken();
}
}
string::size_type pos=str.find_first_of("\n\r\t() ,",
iter-str.begin());
if (pos==string::npos) {
if (iter!=str.end()) {
tok.assign(iter,str.end());
iter=str.end();
} else {
return StringTokenizer::TT_EOF;
}
} else {
tok.assign(iter, str.begin()+pos);
iter=str.begin()+pos;
}
char *stopstring;
double dbl=strtod(tok.c_str(),&stopstring);
if (*stopstring=='\0') {
ntok=dbl;
stok="";
return StringTokenizer::TT_NUMBER;
} else {
ntok=0.0;
stok=tok;
return StringTokenizer::TT_WORD;
}
}
/*public*/
int
StringTokenizer::peekNextToken()
{
string::size_type pos;
string tok="";
if (iter==str.end())
return StringTokenizer::TT_EOF;
pos=str.find_first_not_of(" \r\n\t", iter-str.begin());
if (pos==string::npos) return StringTokenizer::TT_EOF;
switch(str[pos]) {
case '(':
case ')':
case ',':
return str[pos];
}
// It's either a Number or a Word, let's
// see when it ends
pos=str.find_first_of("\n\r\t() ,", iter-str.begin());
if (pos==string::npos) {
if (iter!=str.end()) {
tok.assign(iter,str.end());
} else {
return StringTokenizer::TT_EOF;
}
} else {
tok.assign(iter, str.begin()+pos); //str.end());
}
char *stopstring;
double dbl=strtod(tok.c_str(),&stopstring);
if (*stopstring=='\0') {
ntok=dbl;
stok="";
return StringTokenizer::TT_NUMBER;
} else {
ntok=0.0;
stok=tok;
return StringTokenizer::TT_WORD;
}
}
/*public*/
double
StringTokenizer::getNVal()
{
return ntok;
}
/*public*/
string
StringTokenizer::getSVal()
{
return stok;
}
} // namespace geos.io
} // namespace geos
/**********************************************************************
* $Log$
* Revision 1.16 2006/04/26 16:35:40 strk
* Had WKTReader accept correct form for MultiPoint
*
**********************************************************************/
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