/*
	$Revision: 18 $
	$Date: 18/08/06 17:57 $
	Copyright © 2006-2007, FSL Technologies Limited. Contact "http://fost.3.felspar.com/".
*/


#include "stdafx.h"
#include "FOST.internet.hpp"


using namespace FSLib;


namespace {


	const FSLib::Revision c_revision( L"$Archive: $", __DATE__, L"$Revision: 0 $", L"$Date: $" );


	const char *c_crlf = "\r\n";


}


/*
	FSLib::Headers
*/


FSLib::Headers::Headers() {
}


void FSLib::Headers::parse( const string &headers ) {
	// This implementation ignores character encodings - assumes UTF-8 which won't work for mail headers
	for ( std::pair< string, Nullable< string > > lines( partition( headers, c_crlf ) ); !lines.first.empty(); lines = partition( lines.second, c_crlf ) ) {
		std::pair< string, Nullable< string > > line( partition( lines.first, ": " ) );
		if ( line.second.isnull() ) {
			FSLib::Exceptions::ParseError exc( L"Header has no value" );
			exc.info() << widen( line.first ) << std::endl;
			throw exc;
		} else
			m_headers.insert( value( widen( line.first ), widen( line.second.value() ) ) );
	}
}


std::pair< FSLib::wstring, FSLib::Headers::Value > FSLib::Headers::value( const wstring &name, const wstring &value ) {
	return std::make_pair( name, Value( value ) );
}


bool FSLib::Headers::exists( const wstring &n ) const {
	return m_headers.find( n ) != m_headers.end();
}
namespace {
	// Done here so it is initialised on DLL loading.
	// Should g'tee no multithreading problem as this isn't going to be used in the DLL initialisation
	const FSLib::Headers::Value g_stat;
}
const FSLib::Headers::Value &FSLib::Headers::operator[]( const wstring &n ) const {
	std::map< wstring, Value >::const_iterator p( m_headers.find( n ) );
	if ( p == m_headers.end() )
		return g_stat;
	else
		return (*p).second;
}


FSLib::Headers::Value &FSLib::Headers::add( const wstring &n, const Value &v ) {
	return (*m_headers.insert( std::make_pair( n, v ) ).first).second;
}


FSLib::Headers::const_iterator FSLib::Headers::begin() const {
	return m_headers.begin();
}


FSLib::Headers::const_iterator FSLib::Headers::end() const {
	return m_headers.end();
}


/*
	FSLib::Headers::Value
*/


FSLib::Headers::Value::Value() {
}


FSLib::Headers::Value::Value( const wchar_t *val )
:m_value( val ) {
}


FSLib::Headers::Value::Value( const wstring &val )
: m_value( val ) {
}


FSLib::Headers::Value::Value( const wstring &val, const std::map< wstring, wstring > &args )
: m_value( val ), m_subvalues( args ) {
}


const wstring &FSLib::Headers::Value::value() const {
	return m_value;
}


const wstring &FSLib::Headers::Value::subvalue( const wstring &k, const wstring &v ) {
	return m_subvalues[ k ] = v;
}


Nullable< wstring > FSLib::Headers::Value::subvalue( const wstring &k ) const {
	std::map< wstring, wstring >::const_iterator p( m_subvalues.find( k ) );
	if ( p == m_subvalues.end() )
		return Null;
	else
		return (*p).second;
}



FSLib::Headers::Value::const_iterator FSLib::Headers::Value::begin() const {
	return m_subvalues.begin();
}


FSLib::Headers::Value::const_iterator FSLib::Headers::Value::end() const {
	return m_subvalues.end();
}