uni-easy-pages/lib/create-pages.js

uni-app开发环境辅助生产工具

const fs = require('fs');
const path = require('path');

const rule = {
	globalStyle: /(?<=const\s+globalStyle\s*=\s*)\{[\s\S]*?}(?=\s*;)/,
	pages: /(?<=const\s+pages\s*=\s*)\[[\s\S]*?](?=\s*;)/g,
	easycom: /(?<=const\s+easycom\s*=\s*)\{[\s\S]*?}(?=\s*;)/,
	tabBar: /(?<=const\s+tabBar\s*=\s*)\{[\s\S]*?}(?=\s*;)/,
	condition: /(?<=const\s+condition\s*=\s*)\{[\s\S]*?}(?=\s*;)/,
	extras: /(?<=const\s+extras\s*=\s*)\{[\s\S]*?}(?=\s*;)/,
	leftWindow: /(?<=const\s+leftWindow\s*=\s*)\{[\s\S]*?}(?=\s*;)/,
	rightWindow: /(?<=const\s+rightWindow\s*=\s*)\{[\s\S]*?}(?=\s*;)/,
	topWindow: /(?<=const\s+topWindow\s*=\s*)\{[\s\S]*?}(?=\s*;)/,
}

module.exports = class {
	constructor(watchDirs, watchFileName) {
		this.watchDirs = watchDirs;
		this.watchFileName = watchFileName;
		this.pagesJsonFilePath = path.join(path.resolve(), "pages.json");

	}

	static init(watchDirs, watchFileName) {
		return new this(watchDirs, watchFileName);
	}

	start() {
		let pagesData = {};
		try {
			let files = [];
			this.watchDirs.forEach((item) => {
				files = files.concat(this.loadFile(item));
			});
			let codeStr = '';
			files.forEach(item => {
				console.log(item)
				try {
					let str = fs.readFileSync(item, 'utf-8');

					let dataStr = `!${str}`;
					dataStr = dataStr.replace(/\w+(?=\:)/g, function(it) {
						return `"${it}"`
					})
					codeStr += str;
				} catch (err) {
					console.error('解析数据失败，文件->' + item);
				}
			});

			let valueStr = '';
			for (let [key, reg] of Object.entries(rule)) {
				try {
					let pagesStr = '';
					codeStr = codeStr.replace(eval(reg), (value) => {
						if (key == "pages") {
							if (value.replace(/[\r\n]/g, "").trim() != "[]") {
								value = value.replace(/\[|]/g, ''); //去除中括号
								value = this.removeIllegalSign(value); //去除非法字符结尾
								pagesStr += `${value},`
							}
						} else {
							if (key == "extras") {
								if (value.replace(/[\r\n]/g, "").trim() != "{}") {
									value = value.replace(/^\{|/, ''); //去除中括号
									value = value.replace(/\}$/, ''); //去除中括号
									value = this.removeIllegalSign(value); //去除非法字符结尾
									valueStr += `${value},`
								}
							} else {
								value = value.replace(/\'/g, "\"");
								value = this.removeIllegalSign(value); //去除非法字符结尾
								valueStr += `"${key}":${value},`
							}
						}
						return ''
					})
					if (key == "pages") {
						valueStr += `"${key}":[${pagesStr}],`
					}

				} catch (err) {
					console.error('解析配置文件数据失败，配置文件->' + key);
				}
			}

			fs.writeFileSync(this.pagesJsonFilePath, this.removeIllegalSign("{" + valueStr + "}"));

			console.log("pages.json 创建完成");
		} catch (err) {
			console.error(err);
		}
	}

	/**
	 * 将一个字符串格式化为正在的json 去除非法结尾字符
	 * @param {String} str  需要去除非法结尾的字符串
	 */
	removeIllegalSign(str) {
		str = str.replace(/\,[\s]*(?=\})/g, sign => sign.replace(/\,/g, ''));
		return str.replace(/(?<=[\}\]])[\s]*\,[\s]*(?=[\}\]])/, sign => sign.replace(/\,/g, ''))
	}

	loadFile(dirPath) {
		let files = [];
		let dirItems = fs.readdirSync(dirPath);
		dirItems.forEach(item => {
			if (this.watchFileName.indexOf(item) > -1) {
				files.push(path.join(dirPath, item));
			} else {
				if (fs.statSync(path.join(dirPath, item)).isDirectory()) {
					let _files = this.loadFile(path.join(dirPath, item));
					if (_files.length > 0) {
						files = files.concat(_files);
					}
				}
			}
		});
		return files;
	}
}