46 lines
1.0 KiB
JavaScript
46 lines
1.0 KiB
JavaScript
function isval(x) { return x !== undefined && x !== null; }
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function keys(o) { return Object.keys(o); }
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function evert_key(obj, key) {
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var o = [], K = keys(obj);
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for(var i = 0; i !== K.length; ++i) o[obj[K[i]][key]] = K[i];
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return o;
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}
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function evert(obj) {
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var o = [], K = keys(obj);
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for(var i = 0; i !== K.length; ++i) o[obj[K[i]]] = K[i];
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return o;
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}
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function evert_num(obj) {
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var o = [], K = keys(obj);
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for(var i = 0; i !== K.length; ++i) o[obj[K[i]]] = parseInt(K[i],10);
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return o;
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}
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function evert_arr(obj) {
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var o = [], K = keys(obj);
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for(var i = 0; i !== K.length; ++i) {
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if(o[obj[K[i]]] == null) o[obj[K[i]]] = [];
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o[obj[K[i]]].push(K[i]);
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}
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return o;
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}
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/* TODO: date1904 logic */
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function datenum(v, date1904) {
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if(date1904) v+=1462;
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var epoch = Date.parse(v);
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return (epoch + 2209161600000) / (24 * 60 * 60 * 1000);
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}
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function cc2str(arr) {
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var o = "";
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for(var i = 0; i != arr.length; ++i) o += String.fromCharCode(arr[i]);
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return o;
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}
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var has_buf = (typeof Buffer !== 'undefined');
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