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133 lines
3.0 KiB
JavaScript
133 lines
3.0 KiB
JavaScript
'use strict';
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const util = require("util");
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const path = require("path");
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const chalk = require("chalk");
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const spy = require("through2-spy");
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const fancyLog = require("fancy-log");
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const repeatString = require("repeat-string");
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const padWidth = 5;
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const typeColors = {
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error: "red",
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warn: "yellow",
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info: "cyan",
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debug: "gray"
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}
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function hexify(buff) {
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let bytes = [];
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for (let i = 0; i < buff.length; i++) {
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bytes.push(buff.toString("hex", i, i + 1));
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}
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return bytes;
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}
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function renderError(err) {
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let message, stack;
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if (err.stack != null) {
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let stackLines = err.stack.split("\n");
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message = stackLines[0];
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stack = stackLines.slice(1);
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} else {
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message = `${err.name}: ${err.message}`;
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}
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let properties = Object.keys(err).map((key) => {
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if (["name", "message", "stack"].indexOf(key) === -1) {
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return {
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key: key,
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value: err[key]
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};
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}
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}).filter((item) => item != null);
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if (stack != null) {
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properties.push({
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key: "stacktrace",
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literal: stack.map((line) => line.trim()).join("\n")
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})
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}
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let renderedProperties = properties.map((property) => {
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let renderedValue;
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if (property.literal != null) {
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renderedValue = property.literal;
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} else if (typeof property.value === "string") {
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renderedValue = property.value;
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} else {
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renderedValue = util.inspect(property.value, {colors: true});
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}
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return `${chalk.bold.blue(property.key)}:\n${indentMultiline(renderedValue)}`;
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}).join("\n");
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let details = indentMultiline(renderedProperties);
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return `${chalk.bold.red(message)}\n${details}`
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}
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function indentMultiline(text, spaces = 4) {
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let indent = repeatString(" ", spaces);
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return text.split("\n").map((line) => indent + line).join("\n");
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}
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module.exports = function namedLog(name, options = {}) {
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let prefix = `[${chalk.green(name)}]`;
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function createLog(type) {
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let prefixes = [prefix];
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if (type) {
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let typeColor = (typeColors[type] != null) ? typeColors[type] : "white";
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let typePrefix = `[${chalk[typeColor](type)}]`;
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prefixes.push(typePrefix);
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}
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return function log(...args) {
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if (args[0] instanceof Error) {
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let renderedError = renderError(args[0]);
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fancyLog.apply(null, prefixes.concat([renderedError]));
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} else {
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fancyLog.apply(null, prefixes.concat(args));
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}
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}
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}
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return {
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debug: createLog("debug"),
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info: createLog("info"),
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warn: createLog("warn"),
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error: createLog("error"),
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log: createLog(),
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stream: function() {
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return spy.obj((file) => {
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let shortPath, firstBytes, suffix;
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let byteLimit = (options.byteLimit != null) ? options.byteLimit : 20;
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if (options.basePath != null) {
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shortPath = path.relative(options.basePath, file.path);
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} else {
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shortPath = path.basename(file.path);
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}
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if (file.contents.length <= byteLimit) {
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firstBytes = file.contents;
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suffix = "";
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} else {
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firstBytes = file.contents.slice(0, byteLimit);
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suffix = " ..."
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}
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this.info(`<File "${shortPath}" <Buffer ${hexify(firstBytes).join(" ")} ${suffix} >>`);
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});
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}
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}
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} |