static QByteArray formatSubject( QString s ) {
if ( isUsAscii( s ) )
return s.remove( QLatin1Char('\n') ).toLatin1(); // don't break header folding,
// so remove any line break
// that happen to be around
else
return rfc2047Encode( s );
}
static QByteArray formatFromAddress( const QString & fromRealName, const QString & fromAddress ) {
if ( fromRealName.isEmpty() )
return fromAddress.toLatin1(); // no real name: return "*****@*****.**"
// return "Joe User <*****@*****.**>", "\"User, Joe\" <*****@*****.**>"
// or "=?utf-8?q?Joe_User?= <*****@*****.**>", depending on real name's nature.
QByteArray r = isUsAscii( fromRealName ) ? quote( fromRealName ) : rfc2047Encode( fromRealName );
return r + " <" + fromAddress.toLatin1() + '>';
}
static string hdr_MakeEmail( const char * cprefix, Pair a )
{
string buf = snew();
if( !buf ) return NULL;
if( A_NAME( a ) )
{
if( isUsAscii( A_NAME( a ) ) )
{
if( !sprint( buf, "%s <%s>", A_NAME( a ), A_EMAIL( a ) ) )
{
sdel( buf );
return NULL;
}
}
else
{
string b64 = hdr_Encodeb64( cprefix, A_NAME( a ) );
if( !b64 )
{
sdel( buf );
return NULL;
}
if( !sprint( buf, "%s <%s>", sstr( b64 ), A_EMAIL( a ) ) )
{
sdel( buf );
sdel( b64 );
return NULL;
}
sdel( b64 );
}
}
else
{
if( !scatc( buf, A_EMAIL( a ) ) )
{
sdel( buf );
return 0;
}
}
return buf;
}
static int hdr_MakeTextHeader( msg_Header header, const char * cprefix,
string out )
{
char * value;
string rc = snew();
if( !rc ) return 0;
value = slfirst( header->values );
while( value )
{
if( isUsAscii( value ) )
{
if( !xscatc( rc, header->name, ": ", value, "\r\n", NULL ) )
{
sdel( rc );
return 0;
}
}
else
{
string b64 = hdr_Encodeb64( cprefix, value );
if( !b64 ) return 0;
if( !xscatc( rc, header->name, ": ", sstr( b64 ), "\r\n", NULL ) )
{
sdel( b64 );
sdel( rc );
return 0;
}
sdel( b64 );
}
value = slnext( header->values );
}
if( !scat( out, rc ) )
{
sdel( rc );
return 0;
}
sdel( rc );
return 1;
}
static QByteArray quote( const QString & s ) {
assert( isUsAscii( s ) );
QByteArray r( s.length() * 2, 0 );
bool needsQuotes = false;
unsigned int j = 0;
for ( int i = 0 ; i < s.length() ; ++i ) {
char ch = s[i].toLatin1();
if ( isSpecial( ch ) ) {
if ( needsQuoting( ch ) )
r[j++] = '\\';
needsQuotes = true;
}
r[j++] = ch;
}
r.truncate( j );
if ( needsQuotes )
return '"' + r + '"';
else
return r;
}
