static InfTextDeleteOperation* inf_text_remote_delete_operation_transform_overlap( InfTextDeleteOperation* operation, InfTextDeleteOperation* other, guint position, guint begin, guint other_begin, guint length) { InfTextRemoteDeleteOperationPrivate* priv; InfTextChunk* chunk; GObject* result; InfTextRemoteDeleteOperationPrivate* result_priv; /* It is actually possible that two remote delete operations are * transformed against each other (actually the parts of a splitted * remote delete operation). However, they must not overlap. */ g_assert(INF_TEXT_IS_DEFAULT_DELETE_OPERATION(other)); priv = INF_TEXT_REMOTE_DELETE_OPERATION_PRIVATE(operation); chunk = inf_text_chunk_substring( inf_text_default_delete_operation_get_chunk( INF_TEXT_DEFAULT_DELETE_OPERATION(other) ), other_begin, length ); result = g_object_new( INF_TEXT_TYPE_REMOTE_DELETE_OPERATION, "position", position, "length", priv->length - length, NULL ); result_priv = INF_TEXT_REMOTE_DELETE_OPERATION_PRIVATE(result); result_priv->recon = inf_text_remote_delete_operation_recon_feed( priv->recon, begin, chunk ); inf_text_chunk_free(chunk); result_priv->recon_offset = priv->recon_offset; return INF_TEXT_DELETE_OPERATION(result); }
static InfAdoptedOperation* inf_text_remote_delete_operation_apply_transformed(InfAdoptedOperation* op, InfAdoptedOperation* trans, InfAdoptedUser* by, InfBuffer* buffer, GError** error) { InfTextRemoteDeleteOperationPrivate* priv; InfTextChunk* chunk; InfTextChunk* temp_slice; GSList* list; GSList* item; InfAdoptedOperation* operation; GSList* recon_list; GSList* recon_item; InfTextRemoteDeleteOperationRecon* recon; InfTextDefaultDeleteOperation* result; g_assert(INF_TEXT_IS_REMOTE_DELETE_OPERATION(op)); g_assert(INF_TEXT_IS_BUFFER(buffer)); /* TODO: We can probably optimize this function, but then we should * a) profile it and b) in many cases input parameters to this function * are trivial anyway. */ if(INF_ADOPTED_IS_SPLIT_OPERATION(trans)) { list = inf_adopted_split_operation_unsplit( INF_ADOPTED_SPLIT_OPERATION(trans) ); } else { list = g_slist_prepend(NULL, trans); } chunk = inf_text_chunk_new( inf_text_buffer_get_encoding(INF_TEXT_BUFFER(buffer)) ); /* We assume the list of remote delete operations to be in order */ for(item = list; item != NULL; item = g_slist_next(item)) { g_assert(INF_TEXT_IS_REMOTE_DELETE_OPERATION(item->data)); priv = INF_TEXT_REMOTE_DELETE_OPERATION_PRIVATE(item->data); operation = INF_ADOPTED_OPERATION(item->data); if(priv->length > 0) { temp_slice = inf_text_buffer_get_slice( INF_TEXT_BUFFER(buffer), priv->position, priv->length ); recon_list = inf_text_remote_delete_operation_recon_feed( priv->recon, 0, temp_slice ); inf_text_chunk_free(temp_slice); } else { recon_list = priv->recon; } for(recon_item = recon_list; recon_item != NULL; recon_item = g_slist_next(recon_item)) { recon = (InfTextRemoteDeleteOperationRecon*)recon_item->data; g_assert(priv->recon_offset + recon->position == inf_text_chunk_get_length(chunk)); inf_text_chunk_insert_chunk( chunk, inf_text_chunk_get_length(chunk), recon->chunk ); } /* Free recon list if newly allocated */ if(priv->length > 0) inf_text_remote_delete_operation_recon_free(recon_list); if(!inf_adopted_operation_apply(operation, by, buffer, error)) { g_slist_free(list); inf_text_chunk_free(chunk); return NULL; } } g_slist_free(list); priv = INF_TEXT_REMOTE_DELETE_OPERATION_PRIVATE(op); result = inf_text_default_delete_operation_new(priv->position, chunk); inf_text_chunk_free(chunk); return INF_ADOPTED_OPERATION(result); }