fml.cpp

compile.sh

g++ -std=c++0x -lboost_unit_test_framework ./parseFilename.cpp -oparseFilename && ./parseFilename

parseFilename.cpp

#define BOOST_TEST_DYN_LINK
#define BOOST_TEST_MODULE whatislife
#include <boost/test/unit_test.hpp>
#include <iostream>

std::string ParseFilename(std::string s, std::string mask)
{
	std::ostringstream result;
	std::vector<std::string> separators;
	std::vector< std::pair<char, std::string> > tags;
	std::string file = s.substr(0, s.rfind("."));
	
	for (size_t i = mask.find("%"); i != std::string::npos; i = mask.find("%"))
	{
		tags.push_back(std::make_pair(mask.at(i+1), ""));
		mask = mask.substr(i+2);
		i = mask.find("%");
		if (!mask.empty())
			separators.push_back(mask.substr(0, i));
	}
	size_t i = 0;
	for (auto it = separators.begin(); it != separators.end(); ++it, ++i)
	{
		size_t j = file.find(*it);
		tags.at(i).second = file.substr(0, j);
		if (j+it->length() > file.length()) {
			goto PARSE_FAILED;
		}
		file = file.substr(j+it->length());
	}
	if (!file.empty())
	{
		if (i >= tags.size()) {
			goto PARSE_FAILED;
		}
		tags.at(i).second = file;
	}
	
	if (0) // tss...
	{
		PARSE_FAILED:
		return "Error while parsing filename!\n";
	}
	
	for (auto it = tags.begin(); it != tags.end(); ++it)
	{
		for (std::string::iterator j = it->second.begin(); j != it->second.end(); ++j)
			if (*j == '_')
				*j = ' ';
			
			result << "%" << it->first << ": " << it->second << "\n";
	}
	return result.str();
}


BOOST_AUTO_TEST_CASE (whatislife) {

	BOOST_CHECK(
		ParseFilename("01 - Album - Song.mp3", "%n - %a - %t") ==
		"%n: 01\n%a: Album\n%t: Song\n"
	);

	BOOST_CHECK(
		ParseFilename("(01) [Album] Song.mp3", "(%n) [%a] %t") ==
			"%n: 01\n%a: Album\n%t: Song\n"
	);
}