133 lines
2.6 KiB
JavaScript
133 lines
2.6 KiB
JavaScript
class Storage {
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constructor() {
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this.session = new Session();
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this.local = new Local();
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}
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}
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class Session {
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setObject(key, value) {
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sessionStorage.setItem(key, JSON.stringify(value));
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}
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getObject(key) {
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return JSON.parse(sessionStorage.getItem(key));
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}
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delete(key) {
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sessionStorage.removeItem(key);
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}
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setText(key, value) {
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sessionStorage.setItem(key, value);
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}
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getText(key) {
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return sessionStorage.getItem(key);
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}
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}
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class Local {
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setObject(key, value) {
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localStorage.setItem(key, JSON.stringify(value));
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}
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getObject(key) {
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return JSON.parse(localStorage.getItem(key));
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}
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delete(key) {
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localStorage.removeItem(key);
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}
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setText(key, value) {
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localStorage.setItem(key, value);
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}
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getText(key) {
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return localStorage.getItem(key);
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}
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getUseSize() {
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var size = 0;
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for (let i = 0, len = localStorage.length; i < len; i++) {
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let key = localStorage.key(i);
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if (null == key) {
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continue;
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}
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let value = localStorage.getItem(key);
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if (null != value) {
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size += value.length;
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}
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}
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return size;
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}
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getAvailableSize() {
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return 5 * 1024 * 1024 - storage.local.getUseSize();
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}
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dynamicClear() {
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if (storage.local.getAvailableSize() < 1 * 1024 * 1024) {
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//remove commited
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for (let i = 0, len = localStorage.length; i < len; i++) {
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let key = localStorage.key(i);
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if (null == key) {
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continue;
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}
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let value = localStorage.getItem(key);
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if (key.length == 37 && key.endsWith(".text") && value.length > 50) {
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let fl = value.substring(35, 36);
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if (fl == "1") {
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localStorage.removeItem(key);
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}
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}
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}
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}
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}
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dynamicDeepClear(ctt, excludeKey) {
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if (!ctt) {
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return;
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}
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//remove expired
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let availableSize = storage.local.getAvailableSize();
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for (
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let i = 0, len = localStorage.length;
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i < len && availableSize < 2 * 1024 * 1024;
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i++
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) {
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let key = localStorage.key(i);
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if (null == key) {
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continue;
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}
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if (key.indexOf(excludeKey) >= 0) {
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continue;
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}
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let value = localStorage.getItem(key);
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if (key.length == 37 && key.endsWith(".text") && value.length > 50) {
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let starray = value.split("|");
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let fl = starray[2];
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let ts = starray[3];
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if (fl == "0") {
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if (ctt - ts > 3 * 24 * 3600 * 1000) {
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localStorage.removeItem(key);
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availableSize = availableSize + value.length;
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}
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}
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}
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}
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}
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}
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const storage = new Storage();
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export default storage;
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