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Diffstat (limited to 'upd8/util.js')
| -rw-r--r-- | upd8/util.js | 423 |
1 files changed, 0 insertions, 423 deletions
diff --git a/upd8/util.js b/upd8/util.js deleted file mode 100644 index 4c4186f..0000000 --- a/upd8/util.js +++ /dev/null @@ -1,423 +0,0 @@ -// This is used by upd8.js! It's part of the 8ackend. Read the notes there if -// you're curious. -// -// Friendly(!) disclaimer: these utility functions haven't 8een tested all that -// much. Do not assume it will do exactly what you want it to do in all cases. -// It will likely only do exactly what I want it to, and only in the cases I -// decided were relevant enough to 8other handling. - -'use strict'; - -// Apparently JavaScript doesn't come with a function to split an array into -// chunks! Weird. Anyway, this is an awesome place to use a generator, even -// though we don't really make use of the 8enefits of generators any time we -// actually use this. 8ut it's still awesome, 8ecause I say so. -module.exports.splitArray = function*(array, fn) { - let lastIndex = 0; - while (lastIndex < array.length) { - let nextIndex = array.findIndex((item, index) => index >= lastIndex && fn(item)); - if (nextIndex === -1) { - nextIndex = array.length; - } - yield array.slice(lastIndex, nextIndex); - // Plus one because we don't want to include the dividing line in the - // next array we yield. - lastIndex = nextIndex + 1; - } -}; - -// This function's name is a joke. Jokes! Hahahahahahahaha. Funny. -module.exports.joinNoOxford = function(array, plural = 'and') { - array = array.filter(Boolean); - - if (array.length === 0) { - // ???????? - return ''; - } - - if (array.length === 1) { - return array[0]; - } - - if (array.length === 2) { - return `${array[0]} ${plural} ${array[1]}`; - } - - return `${array.slice(0, -1).join(', ')} ${plural} ${array[array.length - 1]}`; -}; - -module.exports.progressPromiseAll = function (msgOrMsgFn, array) { - if (!array.length) { - return Promise.resolve([]); - } - - const msgFn = (typeof msgOrMsgFn === 'function' - ? msgOrMsgFn - : () => msgOrMsgFn); - - let done = 0, total = array.length; - process.stdout.write(`\r${msgFn()} [0/${total}]`); - const start = Date.now(); - return Promise.all(array.map(promise => promise.then(val => { - done++; - // const pc = `${done}/${total}`; - const pc = (Math.round(done / total * 1000) / 10 + '%').padEnd('99.9%'.length, ' '); - if (done === total) { - const time = Date.now() - start; - process.stdout.write(`\r\x1b[2m${msgFn()} [${pc}] \x1b[0;32mDone! \x1b[0;2m(${time} ms) \x1b[0m\n`) - } else { - process.stdout.write(`\r${msgFn()} [${pc}] `); - } - return val; - }))); -}; - -module.exports.queue = function (array, max = 50) { - if (max === 0) { - return array.map(fn => fn()); - } - - const begin = []; - let current = 0; - const ret = array.map(fn => new Promise((resolve, reject) => { - begin.push(() => { - current++; - Promise.resolve(fn()).then(value => { - current--; - if (current < max && begin.length) { - begin.shift()(); - } - resolve(value); - }, reject); - }); - })); - - for (let i = 0; i < max && begin.length; i++) { - begin.shift()(); - } - - return ret; -}; - -module.exports.delay = ms => new Promise(res => setTimeout(res, ms)); - -module.exports.th = function (n) { - if (n % 10 === 1 && n !== 11) { - return n + 'st'; - } else if (n % 10 === 2 && n !== 12) { - return n + 'nd'; - } else if (n % 10 === 3 && n !== 13) { - return n + 'rd'; - } else { - return n + 'th'; - } -}; - -// My function names just keep getting 8etter. -module.exports.s = function (n, word) { - return `${n} ${word}` + (n === 1 ? '' : 's'); -}; - -// Hey, did you know I apparently put a space 8efore the parameters in function -// names? 8ut only in function expressions, not declar8tions? I mean, I guess -// you did. You're pro8a8ly more familiar with my code than I am 8y this -// point. I haven't messed with any of this code in ages. Yay!!!!!!!! -// -// This function only does anything on o8jects you're going to 8e reusing. -// Argua8ly I could use a WeakMap here, 8ut since the o8ject needs to 8e -// reused to 8e useful anyway, I just store the result with a symbol. -// Sorry if it's 8een frozen I guess?? -module.exports.cacheOneArg = function (fn) { - const symbol = Symbol('Cache'); - return arg => { - if (!arg[symbol]) { - arg[symbol] = fn(arg); - } - return arg[symbol]; - }; -}; - -const decorateTime = function (functionToBeWrapped) { - const fn = function(...args) { - const start = Date.now(); - const ret = functionToBeWrapped(...args); - const end = Date.now(); - fn.timeSpent += end - start; - fn.timesCalled++; - return ret; - }; - - fn.wrappedName = functionToBeWrapped.name; - fn.timeSpent = 0; - fn.timesCalled = 0; - fn.displayTime = function() { - const averageTime = fn.timeSpent / fn.timesCalled; - console.log(`\x1b[1m${fn.wrappedName}(...):\x1b[0m ${fn.timeSpent} ms / ${fn.timesCalled} calls \x1b[2m(avg: ${averageTime} ms)\x1b[0m`); - }; - - decorateTime.decoratedFunctions.push(fn); - - return fn; -}; - -decorateTime.decoratedFunctions = []; -decorateTime.displayTime = function() { - if (decorateTime.decoratedFunctions.length) { - console.log(`\x1b[1mdecorateTime results: ` + '-'.repeat(40) + '\x1b[0m'); - for (const fn of decorateTime.decoratedFunctions) { - fn.displayTime(); - } - } -}; - -module.exports.decorateTime = decorateTime; - -// Stolen as #@CK from mtui! -const parseOptions = async function(options, optionDescriptorMap) { - // This function is sorely lacking in comments, but the basic usage is - // as such: - // - // options is the array of options you want to process; - // optionDescriptorMap is a mapping of option names to objects that describe - // the expected value for their corresponding options. - // Returned is a mapping of any specified option names to their values, or - // a process.exit(1) and error message if there were any issues. - // - // Here are examples of optionDescriptorMap to cover all the things you can - // do with it: - // - // optionDescriptorMap: { - // 'telnet-server': {type: 'flag'}, - // 't': {alias: 'telnet-server'} - // } - // - // options: ['t'] -> result: {'telnet-server': true} - // - // optionDescriptorMap: { - // 'directory': { - // type: 'value', - // validate(name) { - // // const whitelistedDirectories = ['apple', 'banana'] - // if (whitelistedDirectories.includes(name)) { - // return true - // } else { - // return 'a whitelisted directory' - // } - // } - // }, - // 'files': {type: 'series'} - // } - // - // ['--directory', 'apple'] -> {'directory': 'apple'} - // ['--directory', 'artichoke'] -> (error) - // ['--files', 'a', 'b', 'c', ';'] -> {'files': ['a', 'b', 'c']} - // - // TODO: Be able to validate the values in a series option. - - const handleDashless = optionDescriptorMap[parseOptions.handleDashless]; - const handleUnknown = optionDescriptorMap[parseOptions.handleUnknown]; - const result = Object.create(null); - for (let i = 0; i < options.length; i++) { - const option = options[i]; - if (option.startsWith('--')) { - // --x can be a flag or expect a value or series of values - let name = option.slice(2).split('=')[0]; // '--x'.split('=') = ['--x'] - let descriptor = optionDescriptorMap[name]; - if (!descriptor) { - if (handleUnknown) { - handleUnknown(option); - } else { - console.error(`Unknown option name: ${name}`); - process.exit(1); - } - continue; - } - if (descriptor.alias) { - name = descriptor.alias; - descriptor = optionDescriptorMap[name]; - } - if (descriptor.type === 'flag') { - result[name] = true; - } else if (descriptor.type === 'value') { - let value = option.slice(2).split('=')[1]; - if (!value) { - value = options[++i]; - if (!value || value.startsWith('-')) { - value = null; - } - } - if (!value) { - console.error(`Expected a value for --${name}`); - process.exit(1); - } - result[name] = value; - } else if (descriptor.type === 'series') { - if (!options.slice(i).includes(';')) { - console.error(`Expected a series of values concluding with ; (\\;) for --${name}`); - process.exit(1); - } - const endIndex = i + options.slice(i).indexOf(';'); - result[name] = options.slice(i + 1, endIndex); - i = endIndex; - } - if (descriptor.validate) { - const validation = await descriptor.validate(result[name]); - if (validation !== true) { - console.error(`Expected ${validation} for --${name}`); - process.exit(1); - } - } - } else if (option.startsWith('-')) { - // mtui doesn't use any -x=y or -x y format optionuments - // -x will always just be a flag - let name = option.slice(1); - let descriptor = optionDescriptorMap[name]; - if (!descriptor) { - if (handleUnknown) { - handleUnknown(option); - } else { - console.error(`Unknown option name: ${name}`); - process.exit(1); - } - continue; - } - if (descriptor.alias) { - name = descriptor.alias; - descriptor = optionDescriptorMap[name]; - } - if (descriptor.type === 'flag') { - result[name] = true; - } else { - console.error(`Use --${name} (value) to specify ${name}`); - process.exit(1); - } - } else if (handleDashless) { - handleDashless(option); - } - } - return result; -} - -parseOptions.handleDashless = Symbol(); -parseOptions.handleUnknown = Symbol(); - -module.exports.parseOptions = parseOptions; - -// Cheap FP for a cheap dyke! -// I have no idea if this is what curry actually means. -module.exports.curry = f => x => (...args) => f(x, ...args); - -module.exports.mapInPlace = (array, fn) => array.splice(0, array.length, ...array.map(fn)); - -module.exports.filterEmptyLines = string => string.split('\n').filter(line => line.trim()).join('\n'); - -module.exports.unique = arr => Array.from(new Set(arr)); - -const logColor = color => (literals, ...values) => { - const w = s => process.stdout.write(s); - w(`\x1b[${color}m`); - for (let i = 0; i < literals.length; i++) { - w(literals[i]); - if (values[i] !== undefined) { - w(`\x1b[1m`); - w(String(values[i])); - w(`\x1b[0;${color}m`); - } - } - w(`\x1b[0m\n`); -}; - -module.exports.logInfo = logColor(2); -module.exports.logWarn = logColor(33); -module.exports.logError = logColor(31); - -module.exports.sortByName = (a, b) => { - let an = a.name.toLowerCase(); - let bn = b.name.toLowerCase(); - if (an.startsWith('the ')) an = an.slice(4); - if (bn.startsWith('the ')) bn = bn.slice(4); - return an < bn ? -1 : an > bn ? 1 : 0; -}; - -module.exports.chunkByConditions = function(array, conditions) { - if (array.length === 0) { - return []; - } else if (conditions.length === 0) { - return [array]; - } - - const out = []; - let cur = [array[0]]; - for (let i = 1; i < array.length; i++) { - const item = array[i]; - const prev = array[i - 1]; - let chunk = false; - for (const condition of conditions) { - if (condition(item, prev)) { - chunk = true; - break; - } - } - if (chunk) { - out.push(cur); - cur = [item]; - } else { - cur.push(item); - } - } - out.push(cur); - return out; -}; - -module.exports.chunkByProperties = function(array, properties) { - return module.exports.chunkByConditions(array, properties.map(p => (a, b) => { - if (a[p] instanceof Date && b[p] instanceof Date) - return +a[p] !== +b[p]; - - if (a[p] !== b[p]) return true; - - // Not sure if this line is still necessary with the specific check for - // d8tes a8ove, 8ut, uh, keeping it anyway, just in case....? - if (a[p] != b[p]) return true; - - return false; - })) - .map(chunk => ({ - ...Object.fromEntries(properties.map(p => [p, chunk[0][p]])), - chunk - })); -}; - -// Very cool function origin8ting in... http-music pro8a8ly! -// Sorry if we happen to 8e violating past-us's copyright, lmao. -module.exports.promisifyProcess = function(proc, showLogging = true) { - // Takes a process (from the child_process module) and returns a promise - // that resolves when the process exits (or rejects, if the exit code is - // non-zero). - // - // Ayy look, no alpha8etical second letter! Couldn't tell this was written - // like three years ago 8efore I was me. 8888) - - return new Promise((resolve, reject) => { - if (showLogging) { - proc.stdout.pipe(process.stdout); - proc.stderr.pipe(process.stderr); - } - - proc.on('exit', code => { - if (code === 0) { - resolve(); - } else { - reject(code); - } - }) - }) -}; - -// Stolen from jq! Which pro8a8ly stole the concept from other places. Nice. -module.exports.withEntries = (obj, fn) => Object.fromEntries(fn(Object.entries(obj))); - -// Nothin' more to it than what it says. Runs a function in-place. Provides an -// altern8tive syntax to the usual IIFEs (e.g. (() => {})()) when you want to -// open a scope and run some statements while inside an existing expression. -module.exports.call = fn => fn(); |