lyx_mirror/src/TexStream.cpp

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/**
* \file TexStream.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* Full author contact details are available in file CREDITS.
*
* Inspired by Dietmar Kuehl's prefix iostreams found on
* http://www.inf.uni-konstanz.de/~kuehl/
*/
#include <config.h>
#include "TexStream.h"
#include "TexRow.h"
#include <iostream>
#include <streambuf>
namespace lyx {
////////////////////////////////////////////////////////////////
//
// TexStreamBuffer
//
////////////////////////////////////////////////////////////////
class TexStreamBuffer : public TexStreamBase
{
public:
TexStreamBuffer(TexStreamBase * sbuf, TexRow * texrow);
int line() const { return line_; }
int column() const { return column_; }
protected:
int overflow(int);
int sync();
private:
TexStreamBase * sbuf_;
TexRow * texrow_;
int column_;
int line_;
};
TexStreamBuffer::TexStreamBuffer(TexStreamBase *sb, TexRow * texrow)
: sbuf_(sb), texrow_(texrow), line_(0)
{
setp(0, 0);
setg(0, 0, 0);
}
int TexStreamBuffer::overflow(int c)
{
if (c == '\n') {
++line_;
column_ = 0;
} else {
++column_;
}
return c;
}
int TexStreamBuffer::sync()
{
sbuf_->pubsync();
return 0;
}
////////////////////////////////////////////////////////////////
//
// TexStream
//
////////////////////////////////////////////////////////////////
TexStream::TexStream(TexStreamBase * sbuf, TexRow * texrow)
: std::basic_ostream<char_type>(sbuf_ = new TexStreamBuffer(sbuf, texrow))
{}
TexStream::~TexStream()
{
delete sbuf_;
}
int TexStream::line() const
{
return sbuf_->line();
}
////////////////////////////////////////////////////////////////
//
// Test
//
////////////////////////////////////////////////////////////////
#if 0
int main(int argc, char *argv[])
{
TexStream out(cout.rdbuf());
char c;
while (cin) {
if (cin.get(c))
out.put(c);
}
cout << "line count: " << out.line() << endl;
return 0;
}
#endif
}