setxml.js
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//格式化xml代码
export function formateXml(xmlStr) {
var 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;
}
//计算头函数 用来缩进
export 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;
}