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/* -*- C++ -*-
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*
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* This file is a part of LEMON, a generic C++ optimization library
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*
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* Copyright (C) 2003-2006
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* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
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* (Egervary Research Group on Combinatorial Optimization, EGRES).
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*
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* Permission to use, modify and distribute this software is granted
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* provided that this copyright notice appears in all copies. For
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* precise terms see the accompanying LICENSE file.
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*
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* This software is provided "AS IS" with no warranty of any kind,
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* express or implied, and with no claim as to its suitability for any
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* purpose.
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*
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*/
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#ifndef GLEMON_XML_H
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#define GLEMON_XML_H
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#include <iostream>
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#include <string>
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#include <vector>
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#include <list>
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#include <map>
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#include <lemon/error.h>
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#include <lemon/dim2.h>
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namespace lemon {
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class XmlIo
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{
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bool _writeMode;
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public:
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///Check if XmlIo is in write mode.
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bool write() { return _writeMode;}
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///Check if XmlIo is in read mode.
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bool read() { return !_writeMode;}
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std::ostream& os;
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int level;
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protected:
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void indent(int level) {
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os << std::endl;
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for(int i=0;i<level;i++) os << ' ';
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}
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void tag(const std::string &_tag) {
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os << '<' << _tag << '>';
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}
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void etag(const std::string &_tag) {
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os << "</" << _tag << '>';
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}
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void itag(const std::string &_tag) { indent();tag(_tag); }
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void ietag(const std::string &_tag) { indent();etag(_tag); }
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void beginTag(const std::string &_tag) {
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itag(_tag);
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level++;
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}
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void endTag(const std::string &_tag) {
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level--;
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ietag(_tag);
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}
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public:
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///Indent the line according to its level.
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///\warning It can only be used in write mode.
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///
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void indent()
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{
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if(write())
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if(level>=0) indent(level);
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else level=0;
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else throw LogicError();
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}
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///Read/write a tag
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///Read/write a tag.
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///In write mode it does not start a new line.
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class ContTag
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{
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XmlIo &ix;
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const std::string _tag;
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public:
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///\e
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///\e
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///
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ContTag(XmlIo &_ix,const std::string &_t) :
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ix(_ix), _tag(_t)
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{
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if(ix.write()) ix.tag(_tag);
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else ix.useTag(_tag);
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}
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~ContTag() {
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if(ix.write()) ix.etag(_tag);
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else if(!std::uncaught_exception()) ix.useTag('/'+_tag);
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}
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};
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///Read/write a tag
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///Read/write a tag.
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///The whole \<foo\> ... \</foo\> will be placed in a single line.
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class LineTag
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{
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XmlIo &ix;
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const std::string _tag;
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public:
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///\e
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///\e
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///
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LineTag(XmlIo &_ix,const std::string &_t) :
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ix(_ix), _tag(_t)
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{
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if(ix.write()) ix.itag(_tag);
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else ix.useTag(_tag);
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}
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~LineTag() {
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if(ix.write()) ix.etag(_tag);
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else if(!std::uncaught_exception()) ix.useTag('/'+_tag);
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}
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};
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///Read/write a tag
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///Read/write a tag.
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///
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class Tag
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{
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XmlIo &ix;
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const std::string _tag;
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public:
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///\e
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///\e
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///
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Tag(XmlIo &_ix,const std::string &_t) :
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ix(_ix), _tag(_t)
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{
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if(ix.write()) ix.beginTag(_tag);
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else ix.useTag(_tag);
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}
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~Tag() {
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if(ix.write()) ix.endTag(_tag);
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else if(!std::uncaught_exception()) ix.useTag('/'+_tag);
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}
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};
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private:
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std::istream& is;
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std::string next_tag;
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int line_number;
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void skipWhiteSpaces()
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{
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if(write()) throw LogicError();
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{
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char c;
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while (is.get(c) && std::isspace(c,is.getloc()))
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if(c=='\n') line_number++;
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is.unget();
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}
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}
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protected:
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/// Use the next tag.
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///\e
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///
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void useTag() {next_tag.clear();}
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///Use the next tag and check if it is equal with \c _tag
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///\e
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///
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void useTag(const std::string &_tag) {
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if(nextTag()==_tag) useTag();
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else throw DataFormatError("",line_number,"Unexpected token name");
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}
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public:
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///Return the next tag (if a tag follows on the stream).
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///\warning It can only be used in read mode.
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///
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const std::string &nextTag()
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{
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if(write()) throw LogicError();
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else if(next_tag.empty()) {
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char c;
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skipWhiteSpaces();
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if(!is.get(c) || c!='<')
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throw DataFormatError("",line_number,"Bad format");
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next_tag.clear();
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while (is.get(c) && c!='>') next_tag.push_back(c);
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if(c!='>')
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throw DataFormatError("",line_number,"Bad format");
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}
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return next_tag;
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}
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/**********************************************************************/
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///\e
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///\e
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///
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XmlIo(std::ostream& _os) : _writeMode(true), os(_os),
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level(-1),
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is(std::cin) {}
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///\e
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///
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XmlIo(std::istream& _is) : _writeMode(false),
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os(std::cout), is(_is),
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line_number(1) {}
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~XmlIo() { if(write()) os<< std::endl; }
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XmlIo &operator()(const int &v)
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{
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if(write()) os << v;
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else {
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skipWhiteSpaces();
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if(!(is >> const_cast<int &>(v)))
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throw DataFormatError("",line_number,"Not an 'int'");
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}
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return *this;
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}
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XmlIo &operator()(const double &v)
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{
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if(write()) os << v;
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else {
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skipWhiteSpaces();
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if(!(is >> const_cast<double &>(v)))
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throw DataFormatError("",line_number,"Not an 'double'");
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}
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return *this;
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}
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XmlIo &operator()(const std::string &v)
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{
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if(write())
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for(std::string::const_iterator i=v.begin();i!=v.end();++i)
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switch(*i) {
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case '\\':
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os << "\\\\";
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break;
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case '<':
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os << "\\<";
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break;
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case '&':
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os << "\\&";
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break;
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case '\n':
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os << "\\n";
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break;
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default:
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os<<*i;
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break;
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}
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else {
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std::string &w = const_cast<std::string &>(v);
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w.clear();
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char c;
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while (is.get(c) && c!='<')
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if(c=='\\')
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if(!is.get(c))
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throw DataFormatError("",line_number,"Bad string");
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else switch(c) {
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case 'n':
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w.push_back('\n');
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break;
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default:
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w.push_back(c);
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break;
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}
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else {
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if(c=='\n') line_number++;
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w.push_back(c);
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286 |
}
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if(c!='<')
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throw DataFormatError("",line_number,"Unexpected eof");
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is.unget();
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}
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return *this;
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}
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293 |
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XmlIo &operator()(const std::string &_tag,const int &v)
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{
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LineTag t(*this,_tag);
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(*this)(v);
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return *this;
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300 |
}
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301 |
XmlIo &operator()(const std::string &_tag,const double &v)
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302 |
{
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303 |
LineTag t(*this,_tag);
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(*this)(v);
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305 |
return *this;
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306 |
}
|
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307 |
XmlIo &operator()(const std::string &_tag,const std::string &v)
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{
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LineTag t(*this,_tag);
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(*this)(v);
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return *this;
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}
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hegyi@1
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///\e
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314 |
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hegyi@1
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315 |
///\e
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|
316 |
///
|
hegyi@1
|
317 |
template<class V>
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318 |
XmlIo &operator()(const std::string &_tag,const V &v)
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319 |
{
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320 |
Tag t(*this,_tag);
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xml(*this,const_cast<V &>(v));
|
hegyi@1
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322 |
return *this;
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hegyi@1
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323 |
}
|
hegyi@1
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324 |
///\e
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hegyi@1
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325 |
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hegyi@1
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326 |
///\e
|
hegyi@1
|
327 |
///
|
hegyi@1
|
328 |
template<class V>
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hegyi@1
|
329 |
XmlIo &operator()(const V &v)
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hegyi@1
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330 |
{
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hegyi@1
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331 |
xml(*this,const_cast<V &>(v));
|
hegyi@1
|
332 |
return *this;
|
hegyi@1
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333 |
}
|
hegyi@1
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334 |
};
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hegyi@1
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335 |
|
hegyi@1
|
336 |
//////////////////////////////////////////////////////////////////////
|
hegyi@1
|
337 |
//////////////////////////////////////////////////////////////////////
|
hegyi@1
|
338 |
|
hegyi@1
|
339 |
///\e
|
hegyi@1
|
340 |
|
hegyi@1
|
341 |
///\relates XmlIo
|
hegyi@1
|
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///
|
hegyi@1
|
343 |
template<class A>
|
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|
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void xml(XmlIo &x,std::auto_ptr<A> &v)
|
hegyi@1
|
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{
|
hegyi@1
|
346 |
if(x.write()) v=new A;
|
hegyi@1
|
347 |
x(*v);
|
hegyi@1
|
348 |
}
|
hegyi@1
|
349 |
|
hegyi@1
|
350 |
///\e
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hegyi@1
|
351 |
|
hegyi@1
|
352 |
///\relates XmlIo
|
hegyi@1
|
353 |
///
|
hegyi@1
|
354 |
template<class A,class B>
|
hegyi@1
|
355 |
void xml(XmlIo &x,std::pair<A,B> &v)
|
hegyi@1
|
356 |
{
|
hegyi@1
|
357 |
x("first",v.first);
|
hegyi@1
|
358 |
x("second",v.second);
|
hegyi@1
|
359 |
}
|
hegyi@1
|
360 |
|
hegyi@1
|
361 |
///\e
|
hegyi@1
|
362 |
|
hegyi@1
|
363 |
///\relates XmlIo
|
hegyi@1
|
364 |
///
|
hegyi@1
|
365 |
template<class T>
|
hegyi@1
|
366 |
void xml(XmlIo &x,std::list<T> &v)
|
hegyi@1
|
367 |
{
|
hegyi@1
|
368 |
if(x.write())
|
hegyi@1
|
369 |
for(typename std::list<T>::const_iterator it=v.begin();
|
hegyi@1
|
370 |
it!=v.end();++it) x("item",*it);
|
hegyi@1
|
371 |
else while(x.nextTag()=="item")
|
hegyi@1
|
372 |
{
|
hegyi@1
|
373 |
v.push_back(T());
|
hegyi@1
|
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x("item",v.back());
|
hegyi@1
|
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}
|
hegyi@1
|
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}
|
hegyi@1
|
377 |
///\e
|
hegyi@1
|
378 |
|
hegyi@1
|
379 |
///\relates XmlIo
|
hegyi@1
|
380 |
///
|
hegyi@1
|
381 |
template<class T>
|
hegyi@1
|
382 |
void xml(XmlIo &x,std::vector<T> &v)
|
hegyi@1
|
383 |
{
|
hegyi@1
|
384 |
if(x.write())
|
hegyi@1
|
385 |
for(typename std::vector<T>::const_iterator it=v.begin();
|
hegyi@1
|
386 |
it!=v.end();++it) x("item",*it);
|
hegyi@1
|
387 |
else while(x.nextTag()=="item")
|
hegyi@1
|
388 |
{
|
hegyi@1
|
389 |
v.push_back(T());
|
hegyi@1
|
390 |
x("item",v.back());
|
hegyi@1
|
391 |
}
|
hegyi@1
|
392 |
}
|
hegyi@1
|
393 |
|
hegyi@1
|
394 |
///\e
|
hegyi@1
|
395 |
|
hegyi@1
|
396 |
///\relates XmlIo
|
hegyi@1
|
397 |
///
|
hegyi@1
|
398 |
template<class K,class V>
|
hegyi@1
|
399 |
void xml(XmlIo &x,std::map<K,V> &v)
|
hegyi@1
|
400 |
{
|
hegyi@1
|
401 |
if(x.write())
|
hegyi@1
|
402 |
for(typename std::map<K,V>::const_iterator it=v.begin();
|
hegyi@1
|
403 |
it!=v.end();++it) x("item",*it);
|
hegyi@1
|
404 |
else while(x.nextTag()=="item")
|
hegyi@1
|
405 |
{
|
hegyi@1
|
406 |
typename std::map<K,V>::value_type it;
|
hegyi@1
|
407 |
x("item",it);
|
hegyi@1
|
408 |
v.insert(it);
|
hegyi@1
|
409 |
}
|
hegyi@1
|
410 |
}
|
hegyi@1
|
411 |
|
hegyi@1
|
412 |
///\e
|
hegyi@1
|
413 |
|
hegyi@1
|
414 |
///\relates XmlIo
|
hegyi@1
|
415 |
///
|
hegyi@1
|
416 |
template<class T>
|
hegyi@1
|
417 |
void xml(XmlIo &x,lemon::dim2::Point<T> &v)
|
hegyi@1
|
418 |
{
|
hegyi@1
|
419 |
{ XmlIo::LineTag t(x,"x"); x(v.x); }
|
hegyi@1
|
420 |
{ XmlIo::ContTag t(x,"y"); x(v.y); }
|
hegyi@1
|
421 |
}
|
hegyi@1
|
422 |
|
hegyi@1
|
423 |
///\e
|
hegyi@1
|
424 |
|
hegyi@1
|
425 |
///\relates XmlIo
|
hegyi@1
|
426 |
///
|
hegyi@1
|
427 |
template<class T>
|
hegyi@1
|
428 |
void xml(XmlIo &x,lemon::dim2::BoundingBox<T> &v)
|
hegyi@1
|
429 |
{
|
hegyi@1
|
430 |
if(x.write()) {
|
hegyi@1
|
431 |
if(!v.empty()) {
|
hegyi@1
|
432 |
x("point",v.bottomLeft());
|
hegyi@1
|
433 |
if(v.bottomLeft()!=v.topRight()) x("point",v.topRight());
|
hegyi@1
|
434 |
}
|
hegyi@1
|
435 |
}
|
hegyi@1
|
436 |
else {
|
hegyi@1
|
437 |
v.clear();
|
hegyi@1
|
438 |
while(x.nextTag()=="point") {
|
hegyi@1
|
439 |
lemon::dim2::Point<T> co;
|
hegyi@1
|
440 |
x("point",co);
|
hegyi@1
|
441 |
v.add(co);
|
hegyi@1
|
442 |
}
|
hegyi@1
|
443 |
}
|
hegyi@1
|
444 |
}
|
hegyi@1
|
445 |
|
hegyi@1
|
446 |
}
|
hegyi@1
|
447 |
|
hegyi@1
|
448 |
#endif
|