79 lines
No EOL
2.1 KiB
JavaScript
79 lines
No EOL
2.1 KiB
JavaScript
define([
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],
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function() {
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function CacheStorage(name) {
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this.name = name;
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}
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CacheStorage.prototype.mkPath = function(key) {
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return this.mkInternalPath("") + "-" + key;
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}
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CacheStorage.prototype.mkInternalPath = function(key) {
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return "bungloo-cache-" + this.name + key;
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};
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CacheStorage.prototype.getItem = function(key) {
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var item = null;
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try { // If localStorage doesn't work then just leave it empty
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item = JSON.parse(localStorage.getItem(this.mkPath(key)));
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} catch(e) {}
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return item;
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}
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CacheStorage.prototype.setItem = function(key, value) {
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var item = this.getItem(key);
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try {
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localStorage.setItem(this.mkPath(key), JSON.stringify(value));
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if (!item) {
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var length_path = this.mkInternalPath("_length");
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var length = parseInt(localStorage.getItem(length_path), 10) + 1;
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localStorage.setItem(length_path, length);
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}
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} catch(e) {}
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}
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CacheStorage.prototype.removeItem = function(key) {
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var item = this.getItem(key);
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try {
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localStorage.removeItem(this.mkPath(key));
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if (item) {
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var length_path = this.mkInternalPath("_length");
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var length = parseInt(localStorage.getItem(length_path), 10) - 1;
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localStorage.setItem(length_path, length);
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}
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} catch(e) {}
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};
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CacheStorage.prototype.clear = function() {
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try {
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for (var i = 0; i < localStorage.length; i++) {
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var key = localStorage.key(i);
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if (key.startsWith(this.mkPath(""))) {
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localStorage.removeItem(key);
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}
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}
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localStorage.setItem(this.mkInternalPath("_length"), 0);
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} catch(e) {}
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}
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CacheStorage.prototype.length = function() {
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var l = 0;
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try {
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l = parseInt(localStorage.getItem(this.mkInternalPath("_length")), 10);
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} catch(e) {}
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return l;
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}
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return CacheStorage;
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}); |