Method decode_finish

lib_acl_cpp/src/mime/rfc2047.cpp:388–475

}

bool rfc2047::decode_finish(const char* toCharset,
	string* out, bool addInvalid /* = true */)
{
	std::list<rfc2047_entry*>::const_iterator cit = m_List.begin();
	string buf1;
	string buf2;
	mime_base64 base64;
	mime_quoted_printable qp;

	// ѡ��һ��Ĭ�ϵĽ�������Ȼ�������Ҫ�仯
	mime_code* pDecoder = &base64;
	const char *fromCharset = NULL;
	charset_conv conv;
	conv.set_add_invalid(addInvalid);

	for (; cit != m_List.end(); ++cit) {
		if ((*cit)->coding == 'Q') {
			if (pDecoder != &qp || !EQ((*cit)->pCharset->c_str(), fromCharset)) {
				if (fromCharset == NULL) {
					fromCharset = (*cit)->pCharset->c_str();
				}
				if (*fromCharset == 0) {
					fromCharset = NULL;
				}
				if (fromCharset == NULL || toCharset == NULL) {
					decoder_finish(pDecoder, NULL, out,
						&buf1, &buf2);
				} else {
					conv.update_begin(fromCharset, toCharset);
					decoder_finish(pDecoder, &conv, out,
						&buf1, &buf2);
				}
				pDecoder->reset();
			}
			pDecoder = &qp;  // qp ����
			fromCharset = (*cit)->pCharset->c_str();
			if (*fromCharset == 0) {
				fromCharset = NULL;
			}
			decoder_update(*cit, fromCharset, toCharset,
				pDecoder, &conv, out, &buf1, &buf2);
		} else if ((*cit)->coding == 'B') {
			if (pDecoder != &base64 || !EQ((*cit)->pCharset->c_str(), fromCharset)) {
				if (fromCharset == NULL) {
					fromCharset = (*cit)->pCharset->c_str();
				}
				if (*fromCharset == 0) {
					fromCharset = NULL;
				}
				if (fromCharset == NULL && toCharset == NULL) {
					decoder_finish(pDecoder, NULL, out,
						&buf1, &buf2);
				} else {
					conv.update_begin(fromCharset, toCharset);
					decoder_finish(pDecoder, &conv, out,
						&buf1, &buf2);
				}
				pDecoder->reset();