w-vue-middle/utils/xmlTool.js

统一公共服务组件

/*
 * @Author: Jason Liu
 * @Date: 2024-02-29 13:49:19
 * @Desc: 
 */


//计算头函数 用来缩进
/**
 * @Author: Jason Liu
 * @description: 
 * @param {*} prefixIndex
 * @return {*}
 */
function setPrefix(prefixIndex) {
    var result = '';
    var span = '    ';//缩进长度
    var output = [];
    for (var i = 0; i < prefixIndex; ++i) {
        output.push(span);
    }
    result = output.join('');
    return result;
}

export function xmlFormatter(xmlStr) {
    let text = xmlStr;
    //使用replace去空格
    text = '\n' + text.replace(/(<\w+)(\s.*?>)/g, function ($0, name, props) {
        return name + ' ' + props.replace(/\s+(\w+=)/g, " $1");
    }).replace(/>\s*?</g, ">\n<");
    //处理注释
    text = text.replace(/\n/g, '\r').replace(/<!--(.+?)-->/g, function ($0, text) {
        var ret = '<!--' + escape(text) + '-->';
        return ret;
    }).replace(/\r/g, '\n');
    //调整格式  以压栈方式递归调整缩进
    var rgx = /\n(<(([^\?]).+?)(?:\s|\s*?>|\s*?(\/)>)(?:.*?(?:(?:(\/)>)|(?:<(\/)\2>)))?)/mg;
    var nodeStack = [];
    var output = text.replace(rgx, function ($0, all, name, isBegin, isCloseFull1, isCloseFull2, isFull1, isFull2) {
        var isClosed = (isCloseFull1 == '/') || (isCloseFull2 == '/') || (isFull1 == '/') || (isFull2 == '/');
        var prefix = '';
        if (isBegin == '!') {//!开头
            prefix = setPrefix(nodeStack.length);
        } else {
            if (isBegin != '/') {///开头
                prefix = setPrefix(nodeStack.length);
                if (!isClosed) {//非关闭标签
                    nodeStack.push(name);
                }
            } else {
                nodeStack.pop();//弹栈
                prefix = setPrefix(nodeStack.length);
            }
        }
        var ret = '\n' + prefix + all;
        return ret;
    });
    var prefixSpace = -1;
    var outputText = output.substring(1);
    //还原注释内容
    outputText = outputText.replace(/\n/g, '\r').replace(/(\s*)<!--(.+?)-->/g, function ($0, prefix, text) {
        if (prefix.charAt(0) == '\r')
            prefix = prefix.substring(1);
        text = unescape(text).replace(/\r/g, '\n');
        var ret = '\n' + prefix + '<!--' + text.replace(/^\s*/mg, prefix) + '-->';
        return ret;
    });
    outputText = outputText.replace(/\s+$/g, '').replace(/\r/g, '\r\n');
    return outputText;
}