@mora/tinypng/lib/helper.js

基于 tinypng 封装的一个支持 `nodejs`、`命令行`和`webpack`的图片压缩工具

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var crypto = require("crypto");
var findup = require("mora-scripts/libs/fs/findup");
var path = require("path");
var fs = require("fs-extra");
var logUpdate = require("log-update");
var NET_FILE_REGEXP = /^\w+:\/\//;
var SVG_FILE_REGEXP = /\.svg$/i;
var homeDir = process.env[(process.platform === 'win32') ? 'USERPROFILE' : 'HOME'];
var pkgRoot = (function () {
    try {
        return path.dirname(findup.pkg());
    }
    catch (e) {
        return process.cwd();
    }
})();
function hash(data, algorithm) {
    if (algorithm === void 0) { algorithm = 'md5'; }
    var hash = crypto.createHash(algorithm);
    hash.update(data);
    return hash.digest('hex');
}
exports.hash = hash;
function getConfigFromFile(defaultConfigFileName, configFile) {
    var result = {};
    if (configFile) {
        result = require(configFile);
        result.configDir = path.dirname(configFile);
    }
    else {
        [process.cwd(), pkgRoot, homeDir].some(function (dir) {
            try {
                result = require(path.join(dir, defaultConfigFileName));
                result.configDir = dir;
                return true;
            }
            catch (e) { }
        });
    }
    return result;
}
function parseConfigResize(resize) {
    if (typeof resize !== 'string')
        return resize;
    var _a = resize.split(/\s*|\s*/), method = _a[0], width = _a[1], heigth = _a[2];
    var result = {};
    result.method = method;
    if (width)
        result.width = parseInt(width, 10);
    if (heigth)
        result.heigth = parseInt(heigth, 10);
    return result;
}
function getConfig(options) {
    if (options === void 0) { options = {}; }
    var config = getConfigFromFile('tinypng-config', options.config);
    Object.keys(options).forEach(function (key) {
        if (options.hasOwnProperty(key) && options[key] !== undefined)
            config[key] = options[key];
    });
    Object.keys(config).forEach(function (key) {
        if (config.configDir && /(Dir|File)$/.test(key))
            config[key] = path.resolve(config.configDir, config[key]);
    });
    if (config.resize)
        config.resize = parseConfigResize(config.resize);
    if (typeof config.tokens === 'string')
        config.tokens = config.tokens ? config.tokens.split(',') : [];
    return config;
}
exports.getConfig = getConfig;
function isNetFile(file) {
    return NET_FILE_REGEXP.test(file);
}
exports.isNetFile = isNetFile;
function isSvgFile(file) {
    return SVG_FILE_REGEXP.test(file);
}
exports.isSvgFile = isSvgFile;
function writeFileSync(filepath, buffer) {
    fs.ensureDirSync(path.dirname(filepath));
    fs.writeFileSync(filepath, buffer);
}
exports.writeFileSync = writeFileSync;
function runProgressTasks(tasks, callback, _a) {
    var _b = _a === void 0 ? {} : _a, _c = _b.indent, indent = _c === void 0 ? '' : _c, _d = _b.quiet, quiet = _d === void 0 ? false : _d;
    var total = tasks.length;
    if (total === 0)
        return callback();
    var frames = ['-', '\\', '|', '/'];
    var frameIndex = 0;
    var finishedCount = 0;
    var sid;
    var refresh = function () {
        if (!quiet) {
            logUpdate(indent + "processing " + finishedCount + "/" + total + " " + frames[frameIndex = ++frameIndex % frames.length]);
        }
    };
    var done = function () {
        if (!quiet) {
            logUpdate.clear();
            clearInterval(sid);
        }
        callback();
    };
    if (!quiet)
        sid = setInterval(refresh, 80);
    var next = function (name) {
        finishedCount++;
        refresh();
        if (finishedCount === total) {
            quiet ? done() : setTimeout(done, 100);
        }
    };
    tasks.forEach(function (task) { return task(next); });
    refresh();
}
exports.runProgressTasks = runProgressTasks;