#include <stdexcept>
#include "live.h"
#include "setup.h"
#include "tools.h"

namespace vdrlive {

using namespace std;
	
string FormatDateTime( char const* format, time_t time )
{
	struct tm tm_r;
	if ( localtime_r( &time, &tm_r ) == 0 ) {
		ostringstream builder;
		builder << "cannot represent timestamp " << time << " as local time";
		throw runtime_error( builder.str() );
	}
	
	char result[ 256 ];
	if ( strftime( result, sizeof( result ), format, &tm_r ) == 0 ) {
		ostringstream builder;
		builder << "representation of timestamp " << time << " exceeds " << sizeof( result ) << " bytes";
		throw runtime_error( builder.str() );
	}
	return result;
}

string StringReplace( string const& text, string const& substring, string const& replacement )
{
	string result = text;
	string::size_type pos = 0;
	while ( ( pos = result.find( substring, pos ) ) != string::npos ) {
		result.replace( pos, substring.length(), replacement );
		pos += replacement.length();
	}
	return result;
}

vector< string > StringSplit( string const& text, char delimiter )
{
	vector< string > result;
	string::size_type last = 0, pos;
	while ( ( pos = text.find( delimiter, last ) ) != string::npos ) {
		result.push_back( text.substr( last, pos - last ) );
		last = pos + 1;
	}
	if ( last < text.length() )
		result.push_back( text.substr( last ) );
	return result;
}

}