Help parsing a file

[dekoy316]

Hello,

I want to read escape characters from a file to format the output of text in a shell. The format is [Key Value] and the contents of the file are:

Black \033[0;30m
Red \033[0;31m
Green \033[0;32m
Brown \033[0;33m
Blue \033[0;34m
Purple \033[0;35m
Cyan \033[0;36m
Grey \033[0;37m

with the code:

map<string, string> getEscapeMap(string fileName) {
	map<string, string> tmp;
	
	ifstream in;
	in.open(fileName.c_str());
	string line = "";
	
	while(!in.eof()) {
		getline(in, line);
		istringstream iss(line);
		string key, value;
		iss >> key;
		iss >> value;
		if(tmp.find(key) == tmp.end() && value != "")
			tmp.insert(pair<string, string>(key, value));
	}
	in.close();
	
	return tmp;
}

But, when I print them back out to cout, it prints the escape character instead of using the character to format the text(ie it prints "\033[0;37m", instead of changing the color of the text to gray. If I print the same escape character using a string constant(manually), it formats the text.

What am I missing here?

[Athar]

\ is an escape character in C++ string literals. \033 stands for ascii 27, so that's the character you have to use in the file - literally writing \033 won't do.

[Lowest0ne]

Or write code that converts the literal \033 to a number 0x33. (Maybe I've confused hex there?)

[Athar]

Yeah, 033 is an octal number. It's 0x1B in hex (\x1B in literals).

[Lowest0ne]

27 makes much more sense now.