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coretool.js
136
coretool.js
@ -4,7 +4,7 @@
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module.exports = {
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sleep: (ms) => new Promise((resolve, reject) => setTimeout(resolve, ms)),
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parseJsonPossible(value) {
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parseJsonPossible (value) {
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try {
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return JSON.parse(value)
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} catch (e) {
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@ -13,99 +13,101 @@ module.exports = {
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},
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// 按顺序展开，哪怕嵌套。
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stringifyOrdered (obj, {cmp, cycles = false, space = '', replacer, schemaColumns, excludeKeys = []} = {}) {
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stringifyOrdered (obj, { cmp, cycles = false, space = '', replacer, schemaColumns, excludeKeys = [] } = {}) {
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/* 这个解决方法不考虑缺省值，不能把嵌套对象也按顺序展开。*/
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// return JSON.stringify(obj, Object.keys(schemaColumns || entity).sort().filter(key => ! excludeKeys.includes(key))) // JSON.stringify 可根据第二个数组参数的顺序排序，但这导致了嵌套对象不能按顺序展开。
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// return JSON.stringify(obj, Object.keys(schemaColumns || entity).sort().filter(key => ! excludeKeys.includes(key))) // JSON.stringify 可根据第二个数组参数的顺序排序，但这导致了嵌套对象不能按顺序展开。
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let newObj = {}
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if (schemaColumns) {
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for (let key in schemaColumns){
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if (schemaColumns.hasOwnProperty(key) && ! schemaColumns[key].hashExclusive && ! excludeKeys.includes(key)) {
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for (let key in schemaColumns) {
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if (schemaColumns.hasOwnProperty(key) && !schemaColumns[key].hashExclusive && !excludeKeys.includes(key)) {
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// JSON.stringify (包括本函数）会把 NaN 或 Infinity 输出为 null，会把 undefined 忽略掉。
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// 而在 typeorm sqlite 数据库中，undefined 会自动存为 schemaColumns[key].default 或 null。从数据库读出时，就会和事先JSON.stringify的结果不一致。
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// 为了和 torm 数据库保持一致习惯，对schemaColumns里的键值应当把 undefined 也设为 default 或 null。
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if (obj[key] === undefined || Number.isNaN(obj[key]) || obj[key] === Infinity) {
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newObj[key] = typeof schemaColumns[key].default === 'undefined' ? null : schemaColumns[key].default
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obj[key] = newObj[key] // 确保内存中的数据和数据库保持一致
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}else {
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} else {
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newObj[key] = obj[key]
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}
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}
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}
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}else{
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} else {
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newObj = obj
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}
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/* 以下代码来自 https://github.com/substack/json-stable-stringify 可把嵌套的复杂值也按顺序输出，例如 { c: 8, b: [{z:6,y:5,x:4},7], a: 3 } */
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if (typeof space === 'number') space = Array(space+1).join(' ')
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var cycles = (typeof cycles === 'boolean') ? cycles : false
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var replacer = replacer || function(key, value) { return value }
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if (typeof space === 'number') space = Array(space + 1).join(' ')
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var cycles = typeof cycles === 'boolean' ? cycles : false
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var replacer =
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replacer ||
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function (key, value) {
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return value
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}
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var cmp = cmp && (function (f) {
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var cmp =
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cmp &&
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(function (f) {
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return function (node) {
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return function (a, b) {
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var aobj = { key: a, value: node[a] }
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var bobj = { key: b, value: node[b] }
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return f(aobj, bobj)
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}
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return function (a, b) {
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var aobj = { key: a, value: node[a] }
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var bobj = { key: b, value: node[b] }
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return f(aobj, bobj)
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}
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}
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})(cmp)
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})(cmp)
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var seen = []
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return (function stringify (parent, key, node, level) {
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var indent = space ? ('\n' + new Array(level + 1).join(space)) : ''
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var colonSeparator = space ? ': ' : ':'
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var indent = space ? '\n' + new Array(level + 1).join(space) : ''
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var colonSeparator = space ? ': ' : ':'
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if (node && node.toJSON && typeof node.toJSON === 'function') {
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node = node.toJSON()
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if (node && node.toJSON && typeof node.toJSON === 'function') {
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node = node.toJSON()
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}
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node = replacer.call(parent, key, node)
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if (node === undefined) {
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return
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}
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if (typeof node !== 'object' || node === null) {
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return JSON.stringify(node)
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}
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if (Array.isArray(node)) {
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var out = []
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for (var i = 0; i < node.length; i++) {
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var item = stringify(node, i, node[i], level + 1) || JSON.stringify(null)
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out.push(indent + space + item)
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}
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return '[' + out.join(',') + indent + ']'
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} else {
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if (seen.indexOf(node) !== -1) {
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if (cycles) return JSON.stringify('__cycle__')
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throw new TypeError('Converting circular structure to JSON')
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} else seen.push(node)
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node = replacer.call(parent, key, node)
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var keys = Object.keys(node).sort(cmp && cmp(node))
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var out = []
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for (var i = 0; i < keys.length; i++) {
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var key = keys[i]
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var value = stringify(node, key, node[key], level + 1)
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if (node === undefined) {
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return
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}
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if (typeof node !== 'object' || node === null) {
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return JSON.stringify(node)
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}
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if (Array.isArray(node)) {
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var out = []
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for (var i = 0; i < node.length; i++) {
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var item = stringify(node, i, node[i], level+1) || JSON.stringify(null)
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out.push(indent + space + item)
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}
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return '[' + out.join(',') + indent + ']'
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}
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else {
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if (seen.indexOf(node) !== -1) {
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if (cycles) return JSON.stringify('__cycle__')
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throw new TypeError('Converting circular structure to JSON')
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}
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else seen.push(node)
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var keys = Object.keys(node).sort(cmp && cmp(node))
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var out = []
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for (var i = 0; i < keys.length; i++) {
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var key = keys[i]
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var value = stringify(node, key, node[key], level+1)
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if(!value) continue
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var keyValue = JSON.stringify(key)
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+ colonSeparator
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+ value
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out.push(indent + space + keyValue)
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}
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seen.splice(seen.indexOf(node), 1)
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return '{' + out.join(',') + indent + '}'
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if (!value) continue
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var keyValue = JSON.stringify(key) + colonSeparator + value
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out.push(indent + space + keyValue)
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}
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seen.splice(seen.indexOf(node), 1)
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return '{' + out.join(',') + indent + '}'
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}
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})({ '': newObj }, '', newObj, 0)
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},
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name2port(name='') {
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let port = name.toLowerCase()
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alpha_to_digit (name = '') {
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let port = name
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.toLowerCase()
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.replace(/[abc]/g, 2)
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.replace(/[def]/g, 3)
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.replace(/[ghi]/g, 4)
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@ -117,7 +119,7 @@ module.exports = {
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return parseInt(port)
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},
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randomNumber ({ length, min, max } = {}) {
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randomize_number ({ length, min, max } = {}) {
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// 长度为 length 的随机数字，或者 (min||0) <= num < max
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var num = 0
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if (typeof length === 'number' && length > 0) {
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@ -138,7 +140,10 @@ module.exports = {
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if (salt && typeof salt === 'string') data = data + salt
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const inputEncoding = input // my.INPUT_LIST.indexOf(option.input)>=0?option.input:my.INPUT // 'utf8', 'ascii' or 'latin1' for string data, default to utf8 if not specified; ignored for Buffer, TypedArray, or DataView.
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const outputEncoding = output === 'buf' ? undefined : output // (my.OUTPUT_LIST.indexOf(output)>=0?output:my.OUTPUT) // option.output: 留空=》默认输出hex格式；或者手动指定 'buf', hex', 'latin1' or 'base64'
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return require('crypto').createHash(hasher).update(data, inputEncoding).digest(outputEncoding)
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return require('crypto')
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.createHash(hasher)
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.update(data, inputEncoding)
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.digest(outputEncoding)
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},
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/**
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@ -189,5 +194,4 @@ module.exports = {
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}
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return null // null 代表一切非法的regcode
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},
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}
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}
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