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/**********************************************************************
* $Id: StringTokenizer.cpp,v 1.11 2004/07/02 13:28:27 strk Exp $
*
* GEOS - Geometry Engine Open Source
* http://geos.refractions.net
*
* 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.
*
**********************************************************************
* $Log: StringTokenizer.cpp,v $
* Revision 1.11 2004/07/02 13:28:27 strk
* Fixed all #include lines to reflect headers layout change.
* Added client application build tips in README.
*
* Revision 1.10 2004/05/17 12:37:50 strk
* Added carriage returns and tabs in set of blanks chars
*
* Revision 1.9 2004/05/07 14:15:08 strk
* fixed peekNextToken to avoid incrementing string pointer
*
* Revision 1.8 2004/03/18 10:42:44 ybychkov
* "IO" and "Util" upgraded to JTS 1.4
* "Geometry" partially upgraded.
*
* Revision 1.7 2003/11/07 01:23:42 pramsey
* Add standard CVS headers licence notices and copyrights to all cpp and h
* files.
*
*
**********************************************************************/
#include <geos/io.h>
namespace geos {
StringTokenizer::StringTokenizer(){
str="";
stok="";
ntok=0.0;
}
StringTokenizer::StringTokenizer(string txt) {
str=txt;
stok="";
ntok=0.0;
}
StringTokenizer::~StringTokenizer(){}
int StringTokenizer::nextToken(){
string tok="";
if (str.size()==0)
return StringTokenizer::TT_EOF;
switch(str[0]) {
case '(':
str=str.substr(1);
return '(';
case ')':
str=str.substr(1);
return ')';
case ',':
str=str.substr(1);
return ',';
case '\n':
case '\r':
case '\t':
case ' ':
string::size_type pos=str.find_first_not_of(" \n\r\t");
if (pos==string::npos) {
return StringTokenizer::TT_EOF;
} else {
str=str.substr(pos);
return nextToken();
}
}
string::size_type pos=str.find_first_of("\n\r\t() ,");
if (pos==string::npos) {
if (str.size()>0) {
tok=str.substr(0);
str="";
} else {
return StringTokenizer::TT_EOF;
}
} else {
tok=str.substr(0,pos);
str=str.substr(pos);
}
char *stopstring;
double dbl=strtod(tok.c_str(),&stopstring);
if (strcmp(stopstring,"")==0) {
ntok=dbl;
stok="";
return StringTokenizer::TT_NUMBER;
} else {
ntok=0.0;
stok=tok;
return StringTokenizer::TT_WORD;
}
}
int StringTokenizer::peekNextToken(){
string::size_type pos;
string tok="";
if (str.size()==0)
return StringTokenizer::TT_EOF;
pos=str.find_first_not_of(" \r\n\t");
if (pos==string::npos) return StringTokenizer::TT_EOF;
switch(str[pos]) {
case '(':
return '(';
case ')':
return ')';
case ',':
return ',';
}
pos=str.find_first_of("\n\r\t() ,");
if (pos==string::npos) {
if (str.size()>0) {
tok=str.substr(0);
} else {
return StringTokenizer::TT_EOF;
}
} else {
tok=str.substr(0,pos);
}
char *stopstring;
double dbl=strtod(tok.c_str(),&stopstring);
if (strcmp(stopstring,"")==0) {
ntok=dbl;
stok="";
return StringTokenizer::TT_NUMBER;
} else {
ntok=0.0;
stok=tok;
return StringTokenizer::TT_WORD;
}
}
double StringTokenizer::getNVal(){
return ntok;
}
string StringTokenizer::getSVal(){
return stok;
}
}
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