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// **********************************************************************
//
// Copyright (c) 2001
// MutableRealms, Inc.
// Huntsville, AL, USA
//
// All Rights Reserved
//
// **********************************************************************
#ifndef ICE_UTIL_OUTPUT_UTIL_H
#define ICE_UTIL_OUTPUT_UTIL_H
#include <IceUtil/Config.h>
#include <fstream>
#include <stack>
namespace IceUtil
{
// ----------------------------------------------------------------------
// OutputBase
// ----------------------------------------------------------------------
//
// Technically it's not necessary to have print() & nl() as virtual
// since the opeator<< functions are specific to each OutputBase
// derivative. However, since it's possible to call print() & nl()
// manually I've decided to leave them as virtual.
//
class ICE_UTIL_API OutputBase : public ::IceUtil::noncopyable
{
public:
OutputBase();
OutputBase(std::ostream&);
OutputBase(const char*);
virtual ~OutputBase();
void setIndent(int); // What is the indent level?
void setUseTab(bool); // Should we output tabs?
void open(const char*); // Open output stream.
virtual void print(const char*); // Print a string.
void inc(); // Increment indentation level.
void dec(); // Decrement indentation level.
void useCurrentPosAsIndent(); // Save the current position as indentation.
void zeroIndent(); // Use zero identation.
void restoreIndent(); // Restore indentation.
virtual void nl(); // Print newline.
void sp(); // Print separator.
bool operator!() const; // Check whether the output state is ok.
protected:
std::ofstream _fout;
std::ostream& _out;
int _pos;
int _indent;
int _indentSize;
std::stack<int> _indentSave;
bool _useTab;
bool _separator;
};
class ICE_UTIL_API NextLine
{
};
extern ICE_UTIL_API NextLine nl;
class ICE_UTIL_API Separator
{
};
extern ICE_UTIL_API Separator sp;
// ----------------------------------------------------------------------
// Output
// ----------------------------------------------------------------------
class ICE_UTIL_API Output : public OutputBase
{
public:
Output();
Output(std::ostream&);
Output(const char*);
void setBeginBlock(const char *); // what do we use at block starts?
void setEndBlock(const char *); // what do we use the block end?
void sb(); // Start a block.
void eb(); // End a block.
private:
std::string _blockStart;
std::string _blockEnd;
};
template<typename T>
Output&
operator<<(Output& out, const T& val)
{
std::ostringstream s;
s << val;
out.print(s.str().c_str());
return out;
}
template<>
inline Output&
operator<<(Output& o, const NextLine&)
{
o.nl();
return o;
}
template<>
inline Output&
operator<<(Output& o, const Separator&)
{
o.sp();
return o;
}
class ICE_UTIL_API StartBlock
{
};
extern ICE_UTIL_API StartBlock sb;
template<>
inline Output&
operator<<(Output& o, const StartBlock&)
{
o.sb();
return o;
}
class ICE_UTIL_API EndBlock
{
};
extern ICE_UTIL_API EndBlock eb;
template<>
inline Output&
operator<<(Output& o, const EndBlock&)
{
o.eb();
return o;
}
ICE_UTIL_API Output& operator<<(Output&, std::ios_base& (*)(std::ios_base&));
// ----------------------------------------------------------------------
// XMLOutput
// ----------------------------------------------------------------------
class ICE_UTIL_API XMLOutput : public OutputBase
{
public:
XMLOutput();
XMLOutput(std::ostream&);
XMLOutput(const char*);
void setSGML(bool);
virtual void print(const char*); // Print a string.
virtual void nl(); // Print newline.
void se(const std::string&); // Start an element.
void ee(); // End an element.
private:
std::stack<std::string> _elementStack;
bool _printed;
bool _sgml;
};
template<typename T>
XMLOutput&
operator<<(XMLOutput& out, const T& val)
{
std::ostringstream s;
s << val;
out.print(s.str().c_str());
return out;
}
template<>
inline XMLOutput&
operator<<(XMLOutput& o, const NextLine&)
{
o.nl();
return o;
}
template<>
inline XMLOutput&
operator<<(XMLOutput& o, const Separator&)
{
o.sp();
return o;
}
// TODO: Not performance critical, does not need to be inlined.
class ICE_UTIL_API StartElement
{
public:
StartElement(const std::string& name) :
_name(name)
{
}
~StartElement()
{
}
const std::string& getName() const
{
return _name;
}
private:
const std::string _name;
};
typedef StartElement se;
template<>
inline XMLOutput&
operator<<(XMLOutput& o, const StartElement& e)
{
o.se(e.getName());
return o;
}
class ICE_UTIL_API EndElement { };
extern ICE_UTIL_API EndElement ee;
template<>
inline XMLOutput&
operator<<(XMLOutput& o, const EndElement&)
{
o.ee();
return o;
}
ICE_UTIL_API XMLOutput& operator<<(XMLOutput&, std::ios_base& (*)(std::ios_base&));
}
#endif
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