/** * Callback for low-level cache events * * \param handle Low-level cache handle * \param event Event object * \param pw Our context * \return NSERROR_OK on success, appropriate error otherwise */ static nserror download_callback(llcache_handle *handle, const llcache_event *event, void *pw) { download_context *ctx = pw; nserror error = NSERROR_OK; switch (event->type) { case LLCACHE_EVENT_HAD_HEADERS: error = download_context_process_headers(ctx); if (error != NSERROR_OK) { llcache_handle_abort(handle); download_context_destroy(ctx); } break; case LLCACHE_EVENT_HAD_DATA: /* If we didn't know up-front that this fetch was for download, * then we won't receive the HAD_HEADERS event. Catch up now. */ if (ctx->window == NULL) { error = download_context_process_headers(ctx); if (error != NSERROR_OK) { llcache_handle_abort(handle); download_context_destroy(ctx); } } if (error == NSERROR_OK) { /** \todo Lose ugly cast */ error = gui_download_window_data(ctx->window, (char *) event->data.data.buf, event->data.data.len); if (error != NSERROR_OK) llcache_handle_abort(handle); } break; case LLCACHE_EVENT_DONE: assert(ctx->window != NULL); gui_download_window_done(ctx->window); break; case LLCACHE_EVENT_ERROR: if (ctx->window != NULL) gui_download_window_error(ctx->window, event->data.msg); break; case LLCACHE_EVENT_PROGRESS: break; } return error; }
nserror gui_download_window_data(struct gui_download_window *dw, const char *data, unsigned int size) { while (true) { const char *msg; int unwritten; os_error *error; error = xosgbpb_writew(dw->file, (const byte *) data, size, &unwritten); if (error) { LOG(("xosgbpb_writew: 0x%x: %s", error->errnum, error->errmess)); msg = error->errmess; } else if (unwritten) { LOG(("xosgbpb_writew: unwritten %i", unwritten)); msg = messages_get("Unwritten"); } else { dw->received += size; return NSERROR_OK; } warn_user("SaveError", msg); if (dw->saved) { /* try to continue with the temporary file */ const char *temp_name = ro_gui_download_temp_name(dw); error = ro_gui_download_move(dw, temp_name, dw->path); if (!error) { /* re-allow saving */ dw->saved = false; error = xwimp_set_icon_state(dw->window, ICON_DOWNLOAD_ICON, wimp_ICON_SHADED, 0); if (error) { LOG(("xwimp_set_icon_state: 0x%x: %s", error->errnum, error->errmess)); warn_user("WimpError", error->errmess); } error = xwimp_set_icon_state(dw->window, ICON_DOWNLOAD_DESTINATION, wimp_ICON_DELETED, wimp_ICON_DELETED); if (error) { LOG(("xwimp_set_icon_state: 0x%x: %s", error->errnum, error->errmess)); warn_user("WimpError", error->errmess); } error = xwimp_set_icon_state(dw->window, ICON_DOWNLOAD_PATH, wimp_ICON_DELETED, 0); if (error) { LOG(("xwimp_set_icon_state: 0x%x: %s", error->errnum, error->errmess)); warn_user("WimpError", error->errmess); } continue; } } /* give up then */ assert(dw->ctx); download_context_abort(dw->ctx); gui_download_window_error(dw, msg); return NSERROR_SAVE_FAILED; } }
bool ro_gui_download_save(struct gui_download_window *dw, const char *file_name, bool force_overwrite) { fileswitch_object_type obj_type; const char *temp_name; os_error *error; if (dw->saved || dw->error) return true; temp_name = ro_gui_download_temp_name(dw); /* does the user want to check for collisions when saving? */ if (!force_overwrite) { /* check whether the destination file/dir already exists */ error = xosfile_read_stamped(file_name, &obj_type, NULL, NULL, NULL, NULL, NULL); if (error) { LOG(("xosfile_read_stamped: 0x%x:%s", error->errnum, error->errmess)); return false; } switch (obj_type) { case osfile_NOT_FOUND: break; case osfile_IS_FILE: dw->query = query_user("OverwriteFile", NULL, &overwrite_funcs, dw, messages_get("Replace"), messages_get("DontReplace")); dw->query_rsn = QueryRsn_Overwrite; return false; default: error = xosfile_make_error(file_name, obj_type); assert(error); warn_user("SaveError", error->errmess); return false; } } if (!ro_gui_download_check_space(dw, file_name, temp_name)) { warn_user("SaveError", messages_get("NoDiscSpace")); return false; } error = ro_gui_download_move(dw, file_name, temp_name); if (error) { warn_user("SaveError", error->errmess); /* try to reopen at old location so that the download can continue to the temporary file */ error = xosfind_openupw(osfind_NO_PATH | osfind_ERROR_IF_DIR, temp_name, 0, &dw->file); if (error) { LOG(("xosfind_openupw: 0x%x: %s", error->errnum, error->errmess)); } else { error = xosargs_set_ptrw(dw->file, dw->received); if (error) { LOG(("xosargs_set_ptrw: 0x%x: %s", error->errnum, error->errmess)); } } if (error) { if (dw->ctx) download_context_abort(dw->ctx); gui_download_window_error(dw, error->errmess); } return false; } dw->saved = true; strncpy(dw->path, file_name, sizeof dw->path); if (!dw->send_dataload || dw->save_message.data.data_xfer.est_size != -1) ro_gui_download_remember_dir(file_name); /* grey out file icon */ error = xwimp_set_icon_state(dw->window, ICON_DOWNLOAD_ICON, wimp_ICON_SHADED, wimp_ICON_SHADED); if (error) { LOG(("xwimp_set_icon_state: 0x%x: %s", error->errnum, error->errmess)); warn_user("WimpError", error->errmess); } /* hide writeable path icon and show destination icon Note: must redraw icon bounding box because the destination icon has rounded edges on RISC OS Select/Adjust and doesn't completely cover the writeable icon */ ro_gui_force_redraw_icon(dw->window, ICON_DOWNLOAD_PATH); error = xwimp_set_icon_state(dw->window, ICON_DOWNLOAD_PATH, wimp_ICON_DELETED, wimp_ICON_DELETED); if (error) { LOG(("xwimp_set_icon_state: 0x%x: %s", error->errnum, error->errmess)); warn_user("WimpError", error->errmess); } error = xwimp_set_icon_state(dw->window, ICON_DOWNLOAD_DESTINATION, wimp_ICON_DELETED, 0); if (error) { LOG(("xwimp_set_icon_state: 0x%x: %s", error->errnum, error->errmess)); warn_user("WimpError", error->errmess); } ro_gui_download_window_hide_caret(dw); return true; }