58 lines
1.6 KiB
TypeScript
58 lines
1.6 KiB
TypeScript
|
namespace datalog.ev3 {
|
||
|
|
/**
|
||
|
|
* A datalog storage for the EV3
|
||
|
|
*/
|
||
|
|
export class EV3DatalogStorage extends DatalogStorage { // implements DatalogStorage {
|
||
|
|
private _filename: string;
|
||
|
|
private _buffer: string;
|
||
|
|
private _storage: storage.Storage;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a new storage for the datalog
|
||
|
|
* @param storage
|
||
|
|
* @param filename
|
||
|
|
*/
|
||
|
|
constructor(storage: storage.Storage, filename: string) {
|
||
|
|
super();
|
||
|
|
this._filename = filename;
|
||
|
|
this._storage = storage;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Initializes the storage
|
||
|
|
*/
|
||
|
|
init(): void {
|
||
|
|
this._storage.remove(this._filename);
|
||
|
|
this._buffer = "";
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Appends the headers in datalog
|
||
|
|
*/
|
||
|
|
appendHeaders(headers: string[]): void {
|
||
|
|
this._storage.appendCSVHeaders(this._filename, headers);
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Appends a row of data
|
||
|
|
*/
|
||
|
|
appendRow(values: number[]): void {
|
||
|
|
// commit row data
|
||
|
|
this._buffer += storage.toCSV(values, this._storage.csvSeparator);
|
||
|
|
// buffered writes
|
||
|
|
if (this._buffer.length > 1024)
|
||
|
|
this.flush();
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Flushes any buffered data
|
||
|
|
*/
|
||
|
|
flush(): void {
|
||
|
|
if (this._buffer) {
|
||
|
|
const b = this._buffer;
|
||
|
|
this._buffer = "";
|
||
|
|
this._storage.append(this._filename, b);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// automatic hook up
|
||
|
|
datalog.setStorage(new datalog.ev3.EV3DatalogStorage(storage.temporary, "datalog.csv"));
|
||
|
|
}
|