Template of sending text

[dekeenfrance]

Hi,

I am writing some code to send text to a third part software. Basically each sending looks like this:

p << "set terminal eps\n";
p << "set output '07.eps'\n";
p << "plot '-' using ($1 == 0 ? NaN : $1) with lines linecolor 2 title 'comparison ratio', \
	'-' using ($1 == 0 ? NaN : $1) with lines title 'comparison ratio'\n";
p.send(TOex_ar).send(TOnew_ar);
p << "set terminal wxt 7\n";
p << "plot '-' using ($1 == 0 ? NaN : $1) with lines linecolor 2 title 'comparison ratio', \
	'-' using ($1 == 0 ? NaN : $1) with lines title 'comparison ratio'\n";
p.send(TOex_ar).send(TOnew_ar);

Each time I have to change the number "07" and "7";
decide to add or not the following parts: "using ($1 == 0 ? NaN : $1)", "with lines", "linecolor 2";
and write the title 'comparison ratio' and the name of data to send "TOex_ar" and "TOnew_ar".

Since I have to do this kind of thing 50 times in my code, and it is in the form of text, I am wondering whether in C++ we can write a template or function to simplify the program, just to input the changing parts.

Could someone please help me? Thanks!

[Disch]

You don't need to template it. Just send the variable data as parameters and construct the string dynamically.

IE... something like....

void output(std::ostream& p,
    int outputNum,  // the '0' / '07'
    bool showUsing, // whether to show 'using ($1 ...'
    bool showLines, // whether to show 'with lines'
    ... etc   )
{
  p << "set terminal eps\n";
  p << "set output '" << std::setfill('0') << std::setw(2) << outputNum << ".eps'\n";
  p << "plot '-'";
  if( showUsing )  p << " using ($1 == 0 ? NaN : $1)";
  if( showLines )  p << " with lines";

  //... etc
}

[dekeenfrance]

Thanks Disch! Ouah that really simplifies the coding... :)

[dekeenfrance]

Oh, I have some problem about how to make the last line:

p.send(TOex_ar).send(TOnew_ar);

It is actually a command with the function "send" defined by an external header. It did not work if I put it inside the text sending function.

Could someone please help me? Thanks !