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55 lines
1.5 KiB
55 lines
1.5 KiB
let fs = require('fs');
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let { logger } = require('./logging');
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function getShortestPrefix(radixTree, key, sliceSize) {
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let shortKey = key.substring(0, sliceSize);
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let keyCount = radixTree.countPrefix(shortKey);
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if (keyCount < 1) {
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return null;
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}
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if (key.length === sliceSize && radixTree.getPrefix(shortKey).includes(key)) {
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return null;
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}
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if (keyCount === 1) {
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return shortKey;
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}
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return getShortestPrefix(radixTree, key, sliceSize + 1);
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}
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function toISODateString(d) {
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function pad(n) { return n < 10 ? '0' + n : n }
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return d.getUTCFullYear() + '-'
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+ pad(d.getUTCMonth() + 1) + '-'
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+ pad(d.getUTCDate()) + 'T'
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+ pad(d.getUTCHours()) + ':'
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+ pad(d.getUTCMinutes()) + ':'
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+ pad(d.getUTCSeconds()) + 'Z'
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}
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function getBuildInfo(buildInfoPath) {
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try {
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return fs.readFileSync(buildInfoPath, "utf8");
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} catch (err) {
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if (err.code === 'ENOENT') {
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return "UNKNOWN_" + toISODateString(new Date());
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} else {
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logger.error("Unexpected Error!", err);
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}
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}
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}
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function sleep(ms) {
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return new Promise(resolve => {
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setTimeout(resolve, ms)
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})
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}
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function isString(s) {
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return typeof(s) === 'string' || s instanceof String;
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}
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exports.getShortestPrefix = getShortestPrefix;
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exports.toISODateString = toISODateString;
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exports.getBuildInfo = getBuildInfo;
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exports.sleep = sleep;
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exports.isString = isString;
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