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47 lines
1.1 KiB
47 lines
1.1 KiB
function addLeadZeros(str, pegLength) {
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if (str.length == 0) str = '0'
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while ((str.length % pegLength) > 0) {
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str = '0' + str;
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}
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return str;
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}
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function stripLeadZeros(str) {
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while (str.length > 1 && str[0] == '0') {
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str = str.substr(1);
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}
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return str;
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}
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function to36(base16) {
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if (typeof base16 != 'string') return;
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if (base16 == '') return '0';
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base16 = addLeadZeros(base16, 5);
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let base36 = '';
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let len = base16.length;
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while (len > 0) {
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let val = parseInt(base16.substr(0,5), 16)
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base16 = base16.substr(5)
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len -= 5
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base36 += addLeadZeros(val.toString(36), 4)
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}
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return stripLeadZeros(base36)
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}
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function to16(base36) {
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if (typeof base36 != 'string') return;
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if (base36 == '') return '0';
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base36 = addLeadZeros(base36, 4)
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let base16 = ''
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let len = base36.length
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while (len > 0) {
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let val = parseInt(base36.substr(0,4), 36)
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base36 = base36.substr(4)
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len -= 4
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base16 += addLeadZeros(val.toString(16), 5)
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}
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return stripLeadZeros(base16)
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}
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